CN113477018A

CN113477018A - Wet garbage resourceful treatment method and treatment system

Info

Publication number: CN113477018A
Application number: CN202110701643.9A
Authority: CN
Inventors: 李国智; 周春来
Original assignee: Shanghai Xiaochaishen Environmental Protection Technology Co ltd
Current assignee: Shanghai Xiaochaishen Environmental Protection Technology Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-10-08

Abstract

The invention relates to the technical field of garbage treatment, in particular to a wet garbage recycling treatment method and a wet garbage recycling treatment system, which comprise the following steps: 1) garbage pretreatment a, sorting garbage; b. crushing and dehydrating, namely crushing the sorted and separated wet garbage into materials with the particle size of less than 30mm, then dehydrating, performing wastewater harmless treatment on the generated wastewater, and performing harmless treatment on the generated waste gas; 2) high-temperature aerobic fermentation, namely putting the dehydrated material into high-temperature aerobic fermentation equipment for fermentation for 5-7 days to obtain a fermentation product after the fermentation is finished, and performing waste gas harmless treatment on waste gas generated in the aerobic fermentation; 3) blending, namely adding a carbon-based material into the obtained fermentation product to prepare earthworm bait; 4) the earthworm fertilizer is prepared by putting earthworms into the earthworm bait, so that the earthworm fertilizer is obtained, the recycling treatment of wet garbage is systematically realized, meanwhile, the problem of three wastes in the recycling process is solved, the wastes are changed into valuable, and the environment is improved.

Description

Wet garbage resourceful treatment method and treatment system

Technical Field

The invention relates to the technical field of garbage treatment, in particular to a wet garbage recycling treatment method and a wet garbage recycling treatment system.

Background

In 2019, the cleaning and transporting amount of domestic garbage in China reaches 2.42 hundred million tons, and the nation has invested huge manpower, material resources and financial resources in garbage cleaning and transporting, along with the steady improvement of the living standard of people, the garbage yield is increased greatly, the garbage yield needs to be reduced urgently, and the generated garbage is subjected to effective harmless treatment.

The garbage classification and the garbage resource disposal are national strategies and are effective guarantee of 'green water green mountains'. The proportion of the wet garbage, which is a part of urban household garbage, is increased year by year, the classification of urban and rural household garbage is accelerated, the resource utilization process of the wet garbage is promoted, and finally the reduction, the resource utilization and the harmlessness of the wet garbage are realized.

The wet garbage treatment process mainly comprises the following steps: landfill and incineration, fertilizer formation, feed formation and the like. Although the landfill and incineration can temporarily solve the problem of garbage disposal, the problem cannot be solved fundamentally, and simultaneously, the pollution to soil and atmosphere is caused; the aerobic fermentation process is a main process for recycling kitchen waste and wet waste, can convert the kitchen waste, the wet waste and the agricultural organic waste into organic fertilizer raw materials or feed through aerobic fermentation, and can convert the wet waste into the fertilizer or the feed through biochemical treatment in a fermentation mode, so that the recycling can be realized, certain economic benefits are generated, and the main trend of future development is realized. At present, a series of processes such as wet garbage classification, pretreatment, fermentation, feed/fertilizer productization and the like are still in an initial stage, a mature, complete and efficient treatment system and method are not formed, and the existing equipment is generally low in intelligent degree. The development and utilization of biological fermentation to carry out comprehensive and systematic treatment and recycling technology on wet garbage has important significance on recycling, reduction, harmlessness and the like of the wet garbage.

In the process of changing aerobic fermentation into organic fertilizer, the problems of three wastes exist: waste gas, waste water, waste residue. At present, the treatment of the three wastes needs to consume large manpower and material resources, the pollution can be caused when the treatment is not good, and the waste residues can not be changed into valuable substances in the conventional treatment mode, so that the conventional garbage treatment has a lot of defects.

Disclosure of Invention

The invention aims to solve the technical problem of providing a wet garbage recycling method, systematically realizing the recycling of wet garbage, solving the problem of three wastes in the recycling process, changing waste into valuable and improving the environment.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a wet garbage recycling treatment method comprises the following steps:

1) pretreatment of refuse

a. Sorting garbage, namely sorting and separating wet garbage and dry garbage;

b. crushing and dehydrating, namely crushing the wet garbage separated by sorting into materials with the particle size of below 30mm, then dehydrating the materials, wherein the water content of the dehydrated materials is 60-70%, performing wastewater harmless treatment on the generated wastewater, and performing harmless treatment on the generated waste gas;

2) high-temperature aerobic fermentation

Putting the dehydrated material into high-temperature aerobic fermentation equipment for fermentation for 5-7 days to obtain a fermentation product after the fermentation is finished, and performing waste gas harmless treatment on waste gas generated in the aerobic fermentation;

3) blending

Adding carbon-based materials into the obtained fermentation product, and fully mixing to obtain earthworm bait;

4) preparation of earthworm fertilizer

Putting the earthworm bait into an earthworm breeding device, adding earthworms or earthworm seeds, separating earthworm feces by a separating device after the earthworm bait is consumed by the earthworms, drying and packaging to obtain earthworm fertilizer, and processing the separated earthworms into liquid fertilizer.

Further, the harmless treatment of the waste gas in the step 2) comprises:

firstly, dust removal, wherein dust blowing particles in waste gas are separated through a dust remover;

secondly, gas-liquid separation, namely introducing the dedusted waste gas into heat exchange equipment, recovering heat in the waste gas for reuse, condensing water vapor in the waste gas, dissolving most ammonia gas contained in the waste gas in the condensing process, and collecting condensed water to enter an ammonia water recovery device to obtain an ammonia water liquid fertilizer;

thirdly, deodorizing the waste gas, and introducing ozone with the concentration of 100mg into the condensed waste gas to oxidize and decompose hydrogen sulfide, ammonia gas and alcohol VOC in the waste gas;

fourthly, washing, namely introducing the waste gas treated by the ozone into a washing tower to absorb the unreacted ozone in the waste gas;

purifying, namely introducing the waste gas after washing and the waste gas generated in the step 1) into a microwave UV photo-oxygen device for purification, decomposing macromolecular odor and low-concentration ammonia gas in the waste gas, generating negative oxygen ions, purifying the waste gas, and introducing the purified waste gas into an alkaline tower for absorbing residual ozone and then discharging.

Further, the harmless treatment of the wastewater comprises the following steps:

firstly, temporarily storing wastewater, and discharging the wastewater into a temporary storage pool;

the second step is that: solid-liquid separation, namely extracting the wastewater in the temporary storage tank by a variable-frequency flexible pump, allowing the wastewater to enter solid-liquid separation equipment, allowing the separated sludge to flow into a sludge tank, and allowing the separated oil-water mixture to enter oil-water separation equipment for oil-water separation;

the third step: acid-base regulation, wherein the wastewater after oil-water separation enters an acid-base regulation pool, and the pH value of the wastewater is regulated to be 6.9-7.1;

the fourth step: flocculation separation, wherein the wastewater after acid-base regulation enters electric flocculation equipment, PAM and PAC are added simultaneously to flocculate SS suspended matters in the wastewater, the flocculated wastewater enters an air flotation device,

removing floating slag from air floatation, introducing the removed floating slag into a sludge tank, introducing the wastewater passing through an air floatation device into an inclined tube sedimentation tank, separating SS suspended matters in the sedimentation wastewater, discharging sludge at the bottom of the inclined tube sedimentation tank into the sludge tank at regular time, and allowing the wastewater passing through the inclined tube sedimentation tank to flow into a buffer tank;

the fifth step: the reverse osmosis treatment, namely passing the wastewater in the buffer tank through two stages of DTRO membranes, then entering an electro-catalytic oxidation tank to remove COD and BOD in the wastewater, and then entering a secondary inclined tube sedimentation tank for secondary inclined tube sedimentation after the wastewater flows into a neutralization tank from the electro-catalytic oxidation tank;

and a sixth step: ozone decolorization, wherein the wastewater after secondary inclined tube precipitation enters an ozone decolorization tank, ozone is introduced into the ozone decolorization tank, colored substances in the wastewater are oxidized, and the wastewater enters a drainage buffer tank from the ozone decolorization tank;

a seventh section: and (4) discharging the sewage by using the nano pipe, wherein the wastewater in the drainage buffer tank is qualified by detection and reaches the sewage nano pipe discharge standard, and the sewage is discharged by using the nano pipe.

The wet garbage recycling treatment system is characterized by comprising a metering device, a garbage sorting device, a high-temperature aerobic fermentation device and an earthworm fertilizer preparation device which are sequentially arranged, and further comprising a wastewater treatment unit, a waste gas treatment device and a control device, wherein the control device is connected with and controls the metering device, the garbage sorting device, the high-temperature aerobic fermentation device and the earthworm fertilizer preparation device.

Further, rubbish sorting device including the discharge bin, first carry material spiral, bag breaker, bar sieve, select separately the link joint, magnet separator, second carry material spiral, dry wet separating centrifuge, rubbing crusher, third carry material spiral, the hydroextractor that set gradually, metering device set up in the discharge bin front side, the discharge port of discharge bin, hydroextractor is connected the wastewater treatment unit.

Further, the high-temperature aerobic fermentation device include high-temperature fermentation cylinder, airtight negative pressure feed arrangement, airtight negative pressure discharging device, airtight negative pressure feed arrangement connects high-temperature fermentation cylinder top feed inlet, and the feed end of airtight negative pressure feed arrangement is connected and is connected the hydroextractor discharge end, and airtight negative pressure discharging device connects high-temperature fermentation cylinder bottom discharge gate, and fertile preparation facilities of earthworm are connected to airtight negative pressure discharging device's discharge end, high-temperature fermentation cylinder is equipped with the gas vent, exhaust hole connection exhaust treatment device.

Furthermore, the waste gas treatment device comprises a dust remover, a cooler, a draught fan, an ozone oxidation deodorization mechanism, a water washing tower, a microwave UV light-oxygen mechanism, an alkaline washing tower, an exhaust fan and a smoke exhaust cylinder which are sequentially connected through an exhaust pipe.

Further, the wastewater treatment unit include through the pond of keeping in that the drain pipe connects gradually, frequency conversion flexible pump, solid-liquid separator, oil water separator, acid-base equalizing basin, electric flocculation equipment, sediment machine is scraped in the air supporting, pipe chute sedimentation tank, buffer tank, one-level DTRO membrane, second grade DTRO membrane, electrocatalytic oxidation pond, neutralization pond, secondary pipe chute sedimentation tank, ozone decoloration pond, drainage buffer tank, still include with the air supporting scrape the mud pond that sediment machine, pipe chute sedimentation tank, secondary pipe chute sedimentation tank are connected.

Further, the earthworm fertilizer preparation device include screening machine, moisture regulation equipment, bait preparation equipment, the device of the simple material of bait, earthworm cultivation removal bed, earthworm cast splitter, earthworm cast equipment for packing that set gradually, earthworm cast splitter still is connected with earthworm processing equipment, liquid fertile preparation equipment.

The invention has the beneficial effects that: by adopting the scheme, the method has the advantages that,

1. the treatment method provides a scheme for garbage recycling treatment, which comprises garbage sorting and classification, wet garbage aerobic fermentation treatment, fermentation product resource amount treatment and fermentation product harmless treatment, so that the effective utilization of the wet garbage is finally realized, no harmful wastewater and waste gas are discharged, the generated waste residues are changed into valuable, the wet garbage recycling treatment is realized systematically, the wet garbage is recycled to the greatest extent, the environment is improved, and the method has wide application prospect and market prospect and is very environment-friendly;

2. according to the invention, the sorted wet garbage is crushed into fermentation raw materials with certain particles and certain water content, and then the fermentation raw materials are prepared into fermentation materials through high-temperature aerobic fermentation, the pretreatment of the wet garbage greatly improves the efficiency of the high-temperature aerobic fermentation, shortens the fermentation time, improves the fermentation effect, obviously improves the fermentation treatment effect of the wet garbage, adjusts the waste residues (fermentation materials) generated by the high-temperature aerobic fermentation into earthworm baits, finally converts the wet garbage into earthworm fertilizers for promoting the growth of crops through a mechanized earthworm breeding technology, and utilizes the waste residues to the maximum extent, thereby changing waste into valuable;

3. the ozone oxidation deodorization technology and the microwave UV photolysis technology are innovatively used for waste gas generated in high-temperature aerobic fermentation, odor generated in the fermentation process, such as ammonia gas, hydrogen sulfide, alcohol VOC and the like, is subjected to oxidative decomposition, so that the waste gas can reach the harmless emission standard, the waste gas pollution is eliminated, heat in the waste gas is recycled, and in addition, an ammonia liquid fertilizer is additionally obtained, the waste gas treatment effect is remarkably improved, and the waste gas is changed into valuable;

4. but technologies such as electroflocculation, two-stage DTRO membrane, electrocatalysis, ozone decoloration are adopted to carry out innocent treatment to the waste water that produces in rubbish letter sorting, have eliminated the waste water pollution, can realize the handling capacity of 5 tons ~20 tons of waste water of daily processing in less space.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a flow chart of a wet garbage recycling method of the present invention.

FIG. 2 is a block diagram of a wet garbage recycling system according to the present invention.

Fig. 3 is a schematic structural diagram of a garbage sorting apparatus according to an embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a high temperature fermenter according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a stirring mechanism according to an embodiment of the present invention.

Fig. 6 is a schematic cross-sectional view of the vent blade according to an embodiment of the present invention.

FIG. 7 is a schematic structural diagram of a driving mechanism according to an embodiment of the present invention.

FIG. 8 is a top view of a drive mechanism in an embodiment of the invention.

Fig. 9 is a schematic structural diagram of an air supply mechanism according to an embodiment of the present invention.

FIG. 10 is a top view of an air delivery mechanism in an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a waste heat recovery device according to an embodiment of the present invention.

FIG. 12 is a cross-sectional view of a middle casing according to an embodiment of the present invention.

FIG. 13 is a block diagram of an exhaust treatment unit according to an embodiment of the present invention.

FIG. 14 is a block diagram showing the structure of a wastewater treatment unit according to an embodiment of the present invention.

Fig. 15 is a block diagram of an apparatus for preparing earthworm fertilizer according to an embodiment of the invention.

Wherein: 1 is a bag breaking machine, 2 is a bar screen, 3 is a sorting chain plate, 4 is a magnetic separator, 5 is a dry-wet separator, 6 is a crusher, 7 is a dehydrator, 9 is a first material conveying mechanism, 10 is a second conveying mechanism, 11 is a fourth conveying mechanism, 12 is a third conveying mechanism,

13 is a high-temperature fermentation tank, 13-1 is a mechanical bin, 13-2 is a fermentation bin, 13-21 is a bottom fermentation bin, 13-22 is a middle-lower fermentation bin, 13-23 is a middle-upper fermentation bin, 13-24 is a top fermentation bin, 13-25 is a top cover plate, 13-3 is a digital temperature instrument, 13-4 is a feed inlet, 13-5 is a pull plate valve,

14 is a closed negative pressure feeding device, 15 is a closed negative pressure discharging device,

16 is a stirring shaft, 16-1 is a stirring blade,

17 is a sheath, 17-1 is a ventilation blade, 17-2 is a one-way air outlet valve, 17-3 is a vertical pipe,

18 is a ratchet wheel, 18-1 is a ratchet wheel push plate, 18-2 is a hydraulic cylinder, 18-3 is a ratchet wheel base,

19 is a high-pressure blower, 19-1 is an air inlet pipe, 19-2 is an auxiliary heating device, 19-3 is a butt-clamping check valve, 19-4 is a butt-clamping valve, 19-5 is a temperature sensor,

20 is a pipeline for air supply, and the pipeline is,

21 is a hot air pipe, 21-1 is a fin, 21-2 is an odor output pipe

22 is a sleeve, 22-1 is an air filter,

23 is a

dust remover

23, 24 is a cooler, 25 is a draught fan, 26 is ozone oxidation deodorization equipment, 27 is a water scrubber, 28 is microwave UV light oxygen equipment, 29 is an alkaline tower, 30 is an exhaust fan,

31 is a sieving machine, 32 is a moisture regulating device, 33 is a bait preparing device, 34 is a bait paving device, 35 is an earthworm cultivating moving bed, 36 is an earthworm cast separating device, 37 is an earthworm cast packing device,

38 is a temporary storage tank, 39 is a variable frequency flexible pump, 40 is a solid-liquid separator, 41 is an oil-water separator, 42 is an acid-base adjusting tank, 43 is an electric flocculation device, 44 is an air flotation residue scraping machine, 45 is an inclined tube sedimentation tank, 46 is a buffer tank, 47 is a primary DTRO membrane, 48 is a secondary DTRO membrane, 49 is an electrocatalytic oxidation tank, 50 is a neutralization tank, 51 is a secondary inclined tube sedimentation tank, 52 is an ozone decoloration tank, and 53 is a drainage buffer tank.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided to enable those skilled in the art to better understand the advantages and features of the present invention, and to make clearer and more precise definitions of the scope of the present invention.

Treatment method example 1: a wet garbage recycling treatment method comprises the following steps:

1) pretreatment of refuse

Weigh the wet rubbish that transports, the statistical treatment volume, adopt sorting equipment to sort wet rubbish categorised, sort out the clothes, shoes, the isometric great major possession rubbish of big bone, and metal object and other debris, then carry out dry-wet separation, separate the plastics that mix with, wet rubbish is broken into the material of the below particle diameter of 30mm, cullet etc. can also be smashed, it dewaters to get into the hydroextractor after smashing, the material moisture content after the dehydration keeps at 60%, the material after the dehydration is being carried out high temperature aerobic fermentation jar through inclosed feeding device input high temperature aerobic fermentation and is being handled.

Collecting wastewater generated in pretreatment and performing wastewater innocent treatment, comprising:

firstly, temporarily storing wastewater, collecting the wastewater generated in sorting and dewatering, and discharging the wastewater into a temporary storage tank, wherein the COD content of the wastewater in the temporary storage tank is about 8 ten thousand;

the second step is that: solid-liquid separation, wherein the waste water in the temporary storage tank is pumped into solid-liquid separation equipment by a variable frequency flexible pump, the variable frequency flexible pump can adjust the pumping flow according to the requirement, and the oil contained in the waste water can be prevented from emulsifying;

the fourth step: flocculation separation, wherein the wastewater after acid-base regulation enters an electric flocculation device, PAM and PAC are added simultaneously to flocculate SS suspended matters in the wastewater, the flocculated wastewater enters an air flotation device, the air flotation device is provided with a slag scraping machine, scum from air flotation is scraped into a slag discharge pipeline and flows into a sludge tank, the wastewater passing through the air flotation device enters an inclined tube sedimentation tank to separate and precipitate the SS suspended matters in the wastewater, sludge at the bottom of the inclined tube sedimentation tank is discharged into the sludge tank at regular time, the wastewater passing through the inclined tube sedimentation tank flows into a buffer tank, and the COD (chemical oxygen demand) of the wastewater in the buffer tank can be reduced to about 1 ten thousand;

the fifth step: reverse osmosis treatment, namely passing the wastewater in the buffer tank through two stages of DTRO membranes, then entering an electro-catalytic oxidation tank to remove COD and BOD in the wastewater, passing through the two stages of DTRO membranes, wherein the COD of the wastewater can be reduced to about 600-;

a seventh section: the nano-tube discharges, and the wastewater in the drainage buffer tank is qualified through detection and reaches the sewage nano-tube discharge standard, so that the nano-tube discharge is carried out, and the sewage pollution is avoided.

The exhaust gas is collected and introduced into an exhaust treatment system.

2) High-temperature aerobic fermentation

The dehydrated materials are put into high-temperature aerobic fermentation equipment for fermentation for 5-7 days, fermentation products, namely waste residues, are obtained after fermentation is finished, no waste water is generated during high-temperature aerobic fermentation treatment, moist and hot waste gas at about 60 ℃ generated by the high-temperature aerobic fermentation equipment contains ammonia gas, hydrogen sulfide and alcohol VOC, the concentration of the ammonia gas generated during aerobic fermentation is up to 1000ppm, the waste gas is subjected to heat exchange with fresh air through a waste heat recoverer and then enters a waste gas treatment system for waste gas harmless treatment, the fresh air enters the waste heat recoverer and is subjected to heat exchange with moist and hot waste gas at about 60 ℃ generated by the high-temperature aerobic fermentation equipment, and the preheated air enters stirring fermentation equipment through a high-pressure oxygen supply fan. In winter or under the condition that other ambient temperatures are lower than 10 ℃, the auxiliary heater can heat the oxygen supply temperature to a proper temperature, so that the energy consumption is reduced, and the waste gas utilization efficiency is improved.

The waste gas innocent treatment comprises the following steps:

3) Blending

Screening out inorganic substances such as plastics, metals, glass and the like in the fermentation product through a screening machine, then adjusting the moisture content of the fermentation product according to the requirement of the earthworm bait, then feeding the fermentation product into earthworm bait preparation equipment, and adding other carbon-based materials required by the earthworms to prepare the earthworm bait;

4) preparation of earthworm fertilizer

The prepared earthworm bait is paved on an earthworm breeding moving bed by an earthworm bait paving machine, earthworm seeds are added, a dark environment is kept, proper temperature and humidity conditions are guaranteed according to the types of earthworms, the earthworms are promoted to propagate in large quantities, the earthworm bait is digested and consumed to produce earthworm cast, after a period of time, the earthworm cast is separated by an earthworm cast separation device and can be used as the earthworm fertilizer after being dried and packaged, after the earthworm cast is separated, a part of living earthworms enter an earthworm processing device, and liquid fertilizer zymogens are added to prepare the liquid fertilizer, so that the wet garbage treatment effect and the wet garbage recycling degree are improved.

The treatment method provides a systematic scheme for garbage recycling treatment, which comprises garbage sorting and classification, wet garbage aerobic fermentation treatment, fermentation product resource amount treatment and fermentation product harmless treatment, so that the effective utilization of the wet garbage is finally realized, no harmful wastewater and waste gas are discharged, the generated waste residues are changed into valuable, the wet garbage recycling treatment is realized by the system, the wet garbage is recycled to the greatest extent, the environment is improved, the application prospect and the market prospect are wide, and the method is very environment-friendly;

the sorted wet garbage is crushed into fermentation raw materials with certain particles and certain water content, and the fermentation raw materials are prepared into fermentation materials through high-temperature aerobic fermentation, the pretreatment of the wet garbage greatly improves the efficiency of the high-temperature aerobic fermentation, shortens the fermentation time, improves the fermentation effect, obviously improves the fermentation treatment effect of the wet garbage, adjusts the waste residues (fermentation materials) generated by the high-temperature aerobic fermentation into earthworm baits, finally converts the wet garbage into earthworm fertilizers for promoting the growth of crops through a mechanized earthworm breeding technology, and utilizes the waste residues to the maximum extent, thereby changing waste into valuable.

Treatment method example 2: a wet garbage recycling treatment method comprises the following steps:

1) pretreatment of refuse

Weigh wet rubbish earlier, the statistics of being convenient for throughput, then it is categorised to break bag letter sorting to wet rubbish, sort out clothes, shoes, the great major possession rubbish of major possession isovoluminal to the major possession bone, and other debris such as metal object, then carry out the dry-wet separation, separate the plastics that mix with, wet rubbish is broken into the material of the below particle diameter of 30mm, cullet etc. can also be smashed, get into the hydroextractor after smashing and dewater, the material moisture content after the dehydration keeps at 70%, the material after the dehydration gets into high temperature aerobic fermentation treatment stage.

The separated waste water is subjected to harmless treatment, which comprises the following steps:

firstly, temporarily storing wastewater, wherein the wastewater is discharged into a temporary storage tank, and the COD content of the wastewater in the temporary storage tank is about 8 ten thousand;

2) High-temperature aerobic fermentation

Putting the dehydrated material into a high-temperature aerobic fermentation device for fermentation for 7 days to obtain a fermentation product after the fermentation is finished, namely waste residue, no waste water is generated in the high-temperature aerobic fermentation treatment, the moist and hot waste gas at about 60 ℃ generated by the high-temperature aerobic fermentation equipment contains ammonia gas, hydrogen sulfide and alcohol VOC, the concentration of the ammonia gas generated in the aerobic fermentation process is up to 1000ppm, the waste gas is subjected to heat exchange with fresh air through a waste heat recoverer, the waste gas is subjected to harmless treatment, the fresh air enters the waste heat recoverer, heat exchange is carried out between the waste gas and the moist heat waste gas generated by the high-temperature aerobic fermentation equipment at about 60 ℃, the preheated air enters the stirring fermentation equipment through a high-pressure oxygen supply fan, in winter or under the condition that other ambient temperatures are lower than 10 ℃, the auxiliary heater can heat the oxygen supply temperature to a proper temperature, so that the energy consumption is reduced, and the waste gas utilization efficiency is improved.

The waste gas innocent treatment comprises the following steps:

3) Blending

4) preparation of earthworm fertilizer

The prepared earthworm bait is paved on an earthworm breeding moving bed by an earthworm bait paving machine, earthworm seeds are added, in a dark environment, under the condition of ensuring proper temperature and humidity, earthworms propagate and digest the earthworm bait in large quantities to generate earthworm cast, after a period of time, the earthworm bait is consumed, the earthworm cast is separated by an earthworm cast separation device, the earthworm cast can be used as earthworm fertilizer after being dried and packaged, after the earthworm cast is separated, a part of living earthworms enter an earthworm processing device, and liquid fertilizer fermentation bacteria are added, so that the liquid fertilizer can be prepared, the wet garbage treatment effect is improved, and the wet garbage recycling degree is improved.

The embodiment of the processing system comprises: the utility model provides a wet rubbish resourceful treatment system, including the metering device that sets gradually, rubbish sorting device, high temperature aerobic fermentation device, fertile preparation facilities of earthworm, still include the wastewater treatment unit, the exhaust-gas treatment unit, a control unit, the control unit connection control metering device, rubbish sorting device, high temperature aerobic fermentation device, fertile preparation facilities of earthworm, the control unit includes intelligent control subsystem and cloud data center subsystem, metering device (not shown in the figure) can adopt weighbridge, the conveyer belt that weighs, the measurement of weighing is carried out to the rubbish that comes in the transportation, provide data to intelligent control subsystem and cloud data center subsystem, be convenient for statistics can coordinate the good corresponding control parameter of the handling capacity of follow-up each device, wet rubbish gets into rubbish sorting device and sorts after metering device weighs.

Referring to fig. 2, the garbage sorting device comprises a discharging bin (not shown in the figure), a bag breaking machine 1, a bar screen 2, a sorting chain plate 3, a magnetic separator 4, a dry-wet separator 5, a pulverizer 6 and a dehydrator 7 which are arranged in sequence, wherein a first conveying mechanism 9 is arranged on the front side of the bag breaking machine 1, wet garbage incoming materials firstly enter the discharging bin, a bin screw is arranged in the discharging bin, the materials in the discharging bin are uniformly conveyed into the first conveying mechanism 9, a sewage collecting pipeline is arranged on the bottom surface of the discharging bin, sewage is collected for centralized treatment, wet garbage raw materials are uniformly conveyed to the bag breaking machine 1 by the first conveying mechanism 9, the bag breaking machine 1 breaks bags of packaging materials such as plastic bags mixed in the wet garbage, the broken materials enter the bar screen 2, oversize materials of the bar screen 2 are large garbage with large volumes such as clothes, shoes and large bones, and undersize materials of the bar screen 2 mainly comprising the wet garbage enter the sorting machine 3, the sorting chain plate is made of stainless steel SUS304, field workers assist in breaking bags of garbage without broken bags and sorting out other sundries such as metal articles and the like, plastic products such as plastic bags, plastic bottles, plastic ropes and the like do not need to be sorted out, the magnetic separator 4 is arranged at the tail end of the sorting chain plate 3, the magnetic separator 4 sorts out metals such as iron and the like which can be attracted by a magnet, a second conveying mechanism 10 is arranged on the rear side of the magnetic separator 4, the wet garbage subjected to magnetic separation is conveyed to the dry-wet separator 5 by the second conveying mechanism 10, the dry-wet separator 5 separates plastics in materials such as plastic bags, plastic bottles, bottle caps, plastic ropes and the like, the separated dry garbage enters the dry garbage collector, the separated wet garbage is conveyed into the crusher 6 through a fourth conveying mechanism 11, the crusher 6 crushes the wet garbage into materials with the particle size of below 30mm, glass cullet al can also be crushed, a third conveying mechanism 12 is arranged on the rear side of the crusher 6, the third conveying mechanism 12 conveys the crushed materials into the dehydrator 7 for dehydration, the water content of the materials is controlled to be kept between 60% and 70%, the dehydrated materials are input into the high-temperature aerobic fermentation device, the dehydrator 7 can adopt an intelligent dehydrator, the dehydration pressure can be automatically adjusted according to the types of the materials, the efficiency is improved, waste gas collecting devices are arranged at the dry-wet separator 5, the crusher 6 and the dehydrator 7, the waste gas is collected and conveyed to a waste gas treatment device for treatment, waste water generated by the dehydrator 7 is conveyed to a waste water treatment unit for treatment, the dry-wet separator 5 can adopt a sieving machine to assist manual work to separate plastic products mixed in wet garbage, the first conveying mechanism 9, the second conveying mechanism 10 and the third conveying mechanism 12 can adopt spiral lifters or conveying belts, the garbage sorting device is arranged in a closed sorting chamber, and a waste gas recovery assembly is arranged in the sorting chamber, the waste gas is collected, the pollution caused by the leakage of the waste gas is avoided, the incoming materials are subjected to bag breaking, classification, crushing and dehydration by the garbage sorting device and processed into materials which are suitable for aerobic fermentation, have the particle size of less than 30mm, the water content of about 65 percent and the impurity content of not more than 5 percent, the materials are conveyed into the high-temperature aerobic fermentation device in a sealed manner, and the wet garbage materials are fermented into raw materials of earthworm bait by the high-temperature aerobic fermentation device.

Referring to fig. 4, the high-temperature aerobic fermentation device comprises a high-temperature fermentation tank 13, a closed negative pressure feeding device 14 and a closed negative pressure discharging device 15, the high-temperature fermentation tank 13 is fixed on a horizontal foundation, the foundation is a reinforced concrete foundation, the high-temperature fermentation tank 13 comprises a mechanical bin 13-1 and a fermentation bin 13-2 at the upper part of the mechanical bin 13-1, the bin body of the fermentation bin 13-2 sequentially comprises a bottom fermentation bin 13-21, a middle-lower fermentation bin 13-22, a middle-upper fermentation bin 13-23 and a top fermentation bin 13-24 from bottom to top, a feeding port 13-4 is formed at the top end of the top fermentation bin 13-24, a pull plate valve 13-5 capable of being opened and closed is arranged at the feeding port 13-4, the closed negative pressure feeding device 14 is connected with the feeding port 13-4, and a discharging port is formed at the bottom of the bottom fermentation bin 13-21, the discharge port is connected with a closed negative pressure discharging device 15, a closed negative pressure feeding device 13 is connected with a feed port at the top of the high-temperature fermentation tank, the feed end of the closed negative pressure feeding device is connected with the discharge end of a dehydrator 7, a closed negative pressure discharging device 14 is connected with a discharge port at the bottom of the high-temperature fermentation tank 12, the discharge end of the closed negative pressure discharging device 14 is connected with an earthworm fertilizer preparation device, the high-temperature fermentation tank is provided with an exhaust pipe 13-3, the exhaust pipe 13-3 is connected with a waste gas treatment device for harmless treatment of waste gas,

the closed negative pressure feeding device 14 adopts a feeding lifting screw, and comprises a lifting material cylinder and a material distributing material cylinder, wherein the lifting material cylinder is obliquely arranged, a lifting support is arranged at the lifting material cylinder to keep the stability of the lifting material cylinder, an openable and closable feeding opening is arranged at the bottom of the lifting material cylinder, a manually-controlled or electrically-controlled feeding gate is arranged at the feeding opening, the feeding opening is used for communicating a garbage transfer vehicle and is opened when not used, the airtightness is improved, the odor overflowing is prevented, the feeding opening can be arranged into a structure convenient for communicating with the garbage transfer vehicle or a structure convenient for communicating with other conveying equipment, the upper end of the lifting material cylinder is connected with the material distributing material cylinder through a vertically-arranged connecting hopper, the inner end of the material distributing material cylinder, far away from the lifting material cylinder, extends to the feeding opening arranged at the top end of the high-temperature fermentation tank and is connected with the feeding opening in a closed manner, and the lifting material cylinder, the connecting hopper and the material distributing hopper form a relatively closed feeding channel, the top end of the material lifting charging barrel is provided with a material lifting motor (not shown in the figure), the output end of the material lifting motor is connected with a material lifting screw (not shown in the figure) in the material lifting charging barrel to lift the kitchen waste supplied by the kitchen waste transfer vehicle, the end part of the outer end of the material distribution 3 is provided with a material distribution motor, the output end of the material distribution motor is connected with a material distribution screw in a material distribution hopper, the lifted kitchen waste enters the material distribution charging barrel through a material connecting hopper and is pushed into a high-temperature fermentation tank 13 by the material distribution charging barrel to carry out aerobic fermentation, when the material is fed, a pulling plate valve 13-5 is opened, a feeding channel feeds the material into the high-temperature fermentation tank, after the feeding is finished, the pulling plate valve 13-5 and a feeding gate are closed, a feeding device adopted by the device is of a closed structure, the garbage is in the feeding process always in a closed state, therefore, odor emission during the feeding is effectively avoided, and the use environment of the fermentation tank is improved, the atmospheric pollution is lightened, and for better avoiding odor emission, the connecting hopper is connected with a feeding negative pressure fan, the feeding negative pressure fan works to generate negative pressure, and the odor emission of a feeding channel is effectively avoided when the feeding channel throws materials.

The closed negative pressure discharging device 15 adopts a processing material lifting screw, and comprises a discharging material cylinder extending outwards from the bottom of a high-temperature fermentation tank 13, wherein a discharging screw (not shown in the figure) is arranged in the discharging material cylinder, the outer end of the high-temperature fermentation tank 13 is provided with a discharging motor (not shown in the figure) according to the principle of the discharging material cylinder, the discharging motor rotates to drive the discharging screw to rotate to realize discharging, the outer end opening of the discharging material cylinder is communicated with an earthworm fertilizer preparation device, the outer end opening of the discharging material cylinder is provided with an openable tail material electric gate, the tail material electric gate is opened during discharging, the discharging material cylinder is connected with a discharging negative pressure fan, the discharging negative pressure fan is opened during discharging of the discharging material cylinder, the discharging material cylinder is in a negative pressure state, the discharging material cylinder is closed and has negative pressure, odor emission during discharging is effectively avoided, the inner end of the discharging material cylinder is communicated with a discharging port, a discharging channel is connected with a discharging negative pressure device, and the discharging channel is kept in negative pressure, the material separating cylinder and the material lifting cylinder both use shaftless screws with the diameter of 400mm, the rotating speed is 20 r/min, the material discharging cylinder 5 also uses shaftless screws with the diameter of 400mm, the rotating speed of the material discharging screws is 15 r/min, the use requirement of wet garbage treatment with the treatment amount of 20 tons/day can be met, the garbage treatment efficiency is high, the feeding and the discharging are closed, odor pollution is not generated, waste gas generated by the high-temperature aerobic fermentation system enters the waste gas treatment device for treatment, no waste water is generated by the high-temperature aerobic fermentation system, a product after the high-temperature aerobic fermentation is discharged to the earthworm fertilizer preparation device through the closed negative pressure discharging device 15, the earthworm bait raw material from the high-temperature aerobic fermentation system is adjusted into earthworm bait by the earthworm fertilizer preparation device, earthworm bait is cultured to prepare the earthworm fertilizer.

Specifically, the bottom fermentation bin 13-21, the middle-lower fermentation bin 13-22, the middle-upper fermentation bin 13-23 and the top fermentation bin 13-24 are connected through bin body flange plates, the split structure is convenient for manufacturing and assembling of a fermentation tank, reasonable design can be carried out according to actual use requirements, the treatment capacity is improved, the applicability is strong, the popularization and the application of the fermentation tank are facilitated, the fermentation tank is divided into different layers, the fermentation degrees of the garbage at different positions in the tank are different, the fermentation progress can be controlled and adjusted according to the fermentation degrees at different positions, better control over fermentation is facilitated, the aerobic fermentation treatment effect of the kitchen garbage is improved, a digital temperature instrument is arranged in each of the middle of the bin body of the bottom fermentation bin 13-21, the middle-lower fermentation bin 13-22, the middle-upper fermentation bin 13-23 and the top fermentation bin 13-24, the intelligent control subsystem is connected to digital temperature instrument, and the intelligent control subsystem is connected cloud data center subsystem and is provided data, and intelligent control subsystem connection control rubbish sorting device, high temperature fermentation cylinder, exhaust treatment device, effluent treatment plant make this system can carry out unified control, and cloud data center subsystem is used for storing data, can realize long-range supervision.

The digital temperature instrument is internally provided with a PT100 sensor, the digital temperature instrument feeds back the detected temperature data of each bin layer to the intelligent control subsystem to detect whether the fermentation temperature reaches the standard or not, the progress of the reaction fermentation is convenient to better control the aerobic fermentation, the top of the top fermentation bin 13-24 can be provided with a top cover plate 13-25, the top cover plate 13-25 is connected with the bin body of the top fermentation bin 13-24 and is used for improving the top structural strength of the top fermentation bin 13-24, meanwhile, the top cover plate 13-25 improves the bearing capacity of the top of the fermentation tank and enhances the tank body strength, a heat insulation plate is arranged between the fermentation bin 13-2 and the mechanical bin 13-and is used for preventing the temperature of the fermentation bin 13-2 from dissipating from the bottom, so that the fermentation effect is improved, and the temperature of the fermentation bin is ensured to be in a proper range, the outer wall of the fermentation bin can be provided with an outer wall heat insulation layer for heat insulation, a through matching discharge hole is formed in the position, corresponding to the discharge hole, of the heat insulation plate, so that the fermentation temperature in the fermentation bin 13-2 is in a proper range, meanwhile, the temperature transmission between the fermentation bin 13-2 and the mechanical bin 13-1 is isolated, the high temperature of the fermentation bin 13-2 is prevented from influencing the mechanical bin 13-2, the mechanical bin 13-1 is enabled to keep proper temperature, all components arranged in the mechanical bin 13-1 are enabled to keep good working states, and the heat dissipation of the mechanical bin 13-1 is facilitated.

A stirring mechanism and an oxygen supply mechanism are arranged in the fermentation bin 13-2, referring to fig. 5, the stirring mechanism comprises a stirring shaft 16 arranged at the axle center of the fermentation bin 13-2 and stirring blades 16-1 connected to the stirring shaft 66, the bottom end of the stirring shaft 16 passes through the heat insulation layer 1-5 and extends into the mechanical bin 13-1 and is connected with a driving mechanism arranged in the mechanical bin 13-1, the bottom end of the stirring shaft 16 is movably matched with the bottom side bin body of the bottom fermentation bin 13-21 through a bearing or other rotating matching elements, the top end of the stirring shaft 16 is movably matched with a top bearing arranged at the axle center of the top fermentation bin 13-24 or the top cover plate 13-25, the stirring shaft 16 keeps smooth rotation, the stirring blades 16-1 are distributed in a plurality of layers, and the stirring blades 16-1 are distributed in four layers along the axial direction of the stirring shaft 16, four layers of stirring blades respectively correspond to the bottom fermentation bin 13-21, the middle-lower fermentation bin 13-22, the middle-upper fermentation bin 13-23 and the top fermentation bin 13-24, each layer comprises three stirring blades 16-1 which are uniformly distributed along the circumferential direction, the positions of the stirring blades of each layer are staggered, the kitchen waste at the positions of the bottom fermentation bin 13-21, the middle-lower fermentation bin 13-22, the middle-upper fermentation bin 13-23 and the top fermentation bin 13-24 corresponding to the blades 16-1 is stirred to promote uniform fermentation, the bottom of the stirring shaft 16 is provided with a sheath 17, the sheath 17 and the stirring shaft 16 synchronously rotate, the sheath 17 is provided with three ventilation blades 17-1 which are uniformly distributed along the circumferential direction, referring to FIG. 6, the inside of the ventilation blade 17-1 is provided with a cavity, and the surface of the ventilation blade 17-1 is provided with a plurality of air outlets, the air outlet is provided with a one-way air outlet valve which can avoid backflow, the one-way air outlet valve is communicated with the cavity, the air in the cavity is sprayed into the fermentation tank through the one-way air outlet valve to provide high-temperature clean air for high-temperature oxygen for high-temperature aerobic fermentation, the stirring shaft 17 is internally provided with a vertical pipe 17-3, the top end of the vertical pipe 17-3 is connected with the cavity of the three ventilation blades 17-1 through a four-way joint, the four-way joint is in rotatable fit with the top end of the vertical pipe 17-3, the rotatable fit position is kept sealed to avoid air leakage, the bottom end of the vertical pipe 17-3 extends into the mechanical bin 13-1 and is connected with an arranged air supply mechanism, hot clean air is provided for the ventilation blades 7-1 through the vertical pipe 17-3, the ventilation blades 17-1 also plays a role in stirring, and clean fresh oxygen is filled into the fermentation bin 13-1 from the bottom of the fermentation bin 13-2 while stirring, satisfy the fermentation demand in the fermentation cylinder 13-1, clean fresh oxygen lets in with the high speed, still play the effect of tympanic bulla simultaneously, material in the fermentation storehouse is disturbed from top to bottom, make the more even of stirring, make the improvement of fermentation effect, for the structure of cooperation fermentation storehouse 13-2, (mixing) shaft 16 can fall into 4 parts, also be (mixing) shaft 16 comprises four shaft segments, connect through the hub connection ware between the adjacent diaxon section, with the structure cooperation in fermentation storehouse, the production of being convenient for, improve the suitability of fermentation cylinder, the structure of fermentation cylinder is nimble, can produce according to actual need and form a complete set, reduce equipment input cost.

Referring to fig. 7 and 8, a hollow ratchet wheel 18 is arranged at the axis position in a mechanical bin 13-1 through a ratchet wheel bottom 18-3 seat, the ratchet wheel 18 is movably matched with a ratchet wheel base 18-3, a ratchet wheel push plate 18-1 is sleeved outside the ratchet wheel 18, the ratchet wheel push plate 18-1 is meshed with the ratchet wheel 18 in a one-way mode, the ratchet wheel push plate 18-1 pushes the ratchet wheel 18 to rotate in a one-way mode, the ratchet wheel push plate 18-1 is of a left-right symmetrical structure relative to the axis of the ratchet wheel 18, two hydraulic cylinders 18-2 are arranged in the mechanical bin 13-1, two sides of the ratchet wheel 18 are symmetrically distributed on the two hydraulic cylinders 18-2, a hydraulic pump station is arranged inside or outside the mechanical bin 13-1 and connected with the hydraulic cylinders, the hydraulic pump station is connected with an intelligent control subsystem, the output end of the hydraulic cylinder 18-2 is movably connected with the end of the ratchet wheel push plate 18-1, the two hydraulic cylinders 18-2 are controlled by an intelligent control subsystem, the hydraulic cylinders 18-2 push the ratchet wheel push plate 18-2 to do reciprocating swing in the horizontal plane to realize rotation of the ratchet wheel 18, the bottom of the stirring shaft 17 is connected with the ratchet wheel 18 to realize rotation of the driving stirring shaft, the vertical pipe 17-3 penetrates through the ratchet wheel 18 and extends to the ratchet wheel base 18-3, two air supply mechanisms which are distributed in bilateral symmetry about the axis of the ratchet wheel 18 are arranged at the ratchet wheel base 18-3, the driving mechanism of the device, the temperature in the fermentation tank and the like are controlled or detected through the intelligent control subsystem, corresponding control can be performed according to the progress of fermentation, the fermentation effect is effectively improved, automatic operation can be realized, and the treatment efficiency of garbage is improved.

Referring to fig. 9 and 10, the air supply mechanism comprises a high pressure blower 19, an air inlet pipe 19-1 and an auxiliary heating device 19-2 which are arranged in a mechanical bin 13-1, the air inlet pipe 19-1 at two sides is in a symmetrical structure, two oxygen supply air inlets are arranged at the lower part of a ratchet wheel base 18-3, the front end of the air inlet pipe is connected with the oxygen supply air inlets through flanges, a butt-clamp check valve 19-3 is connected in series at the flange, the high pressure blower 19 and the auxiliary heating device 19-2 are connected in series in an air pipe 91-1, the auxiliary heating device 19-2 is arranged at the front side of the high pressure blower 19 along the direction of net air flow, an air supply pipeline 20 which is vertically arranged is arranged at the side of the fermentation tank 13, the outer end of the air inlet pipe 19-1 is communicated with the bottom end of the air supply pipeline 20, the air supply pipeline 20 provides fresh and hot air to the air inlet pipe 19-1, the high-pressure blower 19 provides power, the purified hot air provided by the air supply pipeline 20 is pressurized and then is conveyed to the auxiliary heating device 19-2, the auxiliary heating device 19-2 adopts an air heater to heat the purified hot air to the temperature meeting the fermentation requirement, the purified hot air enters the fermentation bin 13-2 through the air inlet pipe 19-1 and the vertical pipe 17-3, the heated purified hot air can greatly improve the fermentation speed in the fermentation bin, the fermentation effect is improved, the kitchen waste treatment time is shortened, the two air supply mechanisms are symmetrically arranged, the structural arrangement of the mechanical bin is convenient, sufficient space is reserved for the layout of other elements in the mechanical bin, the high-pressure blower 19 can provide sufficient power for the purified hot air, the purified hot air can quickly enter the auxiliary heating device for heat exchange, sufficient power still exists, and the air entering the fermentation bin has a certain speed, the air inlet pipe 19-1 is provided with a butt-clamp valve 19-4 for adjusting the oxygen supply air volume, a butt-clamp check valve 19-3 is arranged to avoid backflow, a temperature sensor 19-5 for detecting the temperature of the clean air is arranged at the position, close to the butt-clamp check valve 19-3, of the air inlet pipe 19-1, the temperature sensor 19-5 detects the temperature, the temperature of the oxygen supply air is fed back to the intelligent control subsystem, the auxiliary heating device 19-2 is controlled accurately, and the intelligent control subsystem is connected with the auxiliary heating device 19-2, so that the energy consumption is reduced.

Referring to fig. 11 and 12, two exhaust pipes 13-3 are disposed on a top cover plate 13-25 at the top of a fermentation chamber 13-2, the two exhaust pipes 13-3 are communicated with the fermentation chamber 13-2, the two exhaust pipes 13-3 are connected with a hot air pipe 21, the hot air pipe 21 is communicated with an odor output pipe 21-2, a sleeve 22 is sleeved outside the hot air pipe 21, one end of the sleeve 22 is connected with an air filter 22-1, the other end of the sleeve 22 is connected with the upper end of an air supply pipeline 20, a bracket is disposed outside the sleeve 22 and fixed on the top cover plate for supporting the sleeve 22, the hot air pipe 21 and the sleeve 22 form a waste heat recovery device with a jacket-shaped structure, the sleeve 22 and the air filter 24 form a clearance air supplement mechanism, the exhaust pipes 13-3 are used for exhausting high-temperature fermentation waste gas in the fermentation chamber, when the high-temperature fermentation waste gas flows through the hot air pipe 21, the waste gas with high temperature discharged from the fermentation bin and the clean air coming in from the air filter 22-1 exchange heat in the waste heat recovery device to recover the heat in the odor, the heat exchange is carried out in the sleeve, the clean air absorbs heat and becomes hot air which is conveyed downwards through the air supply pipeline 20, the heat of the fermentation waste gas is fully utilized, the energy consumption for heating the clean air is reduced, the device is energy-saving and environment-friendly, the waste heat recovery device adopted in the device has simple structure, convenient manufacture and low cost, the introduced clean air can be effectively heated, in order to reduce the cost and improve the heat recovery efficiency, the sleeve 12 can adopt a PP pipe with the diameter of 500mm, the hot air pipe 21 can adopt a thin-wall copper pipe or an aluminum pipe with the diameter of 200mm, and meanwhile, the surface of the sleeve 22 is made of a heat-insulating coating material, the heat loss caused by heat exchange is reduced, the air filter 14 uses an air filter with the diameter of 160mm, the air supply pipeline 20 can adopt a PVC pipe with the diameter of 160mm, the heat insulation material is coated outside the PVC pipe to reduce the heat loss in the air supply process, the outer wall of the hot air pipe 21 is provided with a fin 21-1 which is spirally wound, a plurality of through holes are arranged on the fin 21-1, the through holes are arranged in a staggered mode, the fin 21-1 increases the heat exchange area, the clean air and the fin impact to exchange heat, the clean air can pass through the through holes, and the heat recovery efficiency of the waste heat recovery device is improved.

The odor output pipe 13-6 led out from the waste heat recovery device is connected with a waste gas treatment device, referring to fig. 13, the waste gas treatment device comprises a dust remover 23, a cooler 24, an induced draft fan 25, an ozone oxidation deodorization device 26, a water washing tower 27, a microwave UV light oxygen device 28, an alkaline washing tower 29, an exhaust fan 30 and a smoke exhaust tube which are arranged in sequence, waste gas from the high-temperature aerobic fermentation tank 13 firstly passes through the dust remover 23 to filter dust particles in the waste gas and then enters the tubular cooler 24, the cooler 24 is supplied with cold water by circulating pumps of the cooling tower and the cooling tower, the condensed waste gas is sent into the ozone oxidation deodorization device 26 by the variable-frequency induced draft fan 25, the ozone oxidation deodorization device adopts the ozone oxidation device commonly used in the market, the variable-frequency induced draft fan 25 can adjust the air volume according to the working condition and the process requirement of the high-temperature aerobic fermentation tank 13, which is favorable for ensuring the optimal environmental condition of material fermentation, the ozone oxidation deodorization device 26 provides 100mg of ozone, the ozone enters a deodorization pipeline of the ozone oxidation deodorization device, when the waste gas passes through the deodorization pipeline, the ozone oxidizes and decomposes hydrogen sulfide, ammonia gas and alcohol VOC in the waste gas into harmless gases such as nitrogen, water, carbon dioxide and the like, the ozone oxidation deodorization can remove about 90% of ammonia gas, the waste gas after ozone oxidation treatment enters a water washing tower 27, the water washing tower 27 can absorb the unreacted ozone in the waste gas, the waste gas passes through the water washing tower 27 and enters a microwave UV light-oxygen device 28, the microwave UV light-oxygen device 28 adopts a common microwave UV light-oxygen treatment device in the market, the waste gas from a garbage sorting device also enters the microwave UV light-oxygen device 28, the microwaves in the microwave UV light-oxygen device 28 can promote the rapid decomposition of macromolecular odor in the waste gas, remove low-concentration ammonia gas and generate negative oxygen ions, purifying air, enabling the waste gas to enter an alkaline washing tower 29 after passing through a microwave UV light-oxygen device 28, enabling the alkaline washing tower 29 to absorb residual ozone in the waste gas, enabling the waste gas to pass through the alkaline washing tower 29 and then be sent into a chimney by a variable-frequency exhaust fan 30, performing organized standard-reaching emission, improving the waste gas treatment effect,

the 24 departments of cooler are equipped with aqueous ammonia recovery plant, concretely, aqueous ammonia recovery plant includes waste gas-liquid separator, the drain pipe that the liquid outlet of waste gas-liquid separator is connected, drain pipe end-to-end connection U type pipe, the other end of U type pipe is equipped with aqueous ammonia recovery valve, aqueous ammonia recovery valve is connected to aqueous ammonia recovery container through collecting the pipeline again, foul smell after the cooler cools down completely is again through waste gas-liquid separator's effect, separate out the liquid in the foul smell, dissolve a large amount of ammonia in the liquid and form the aqueous ammonia, the aqueous ammonia gets into U type pipe along the drain pipe, then, retrieve the aqueous ammonia through aqueous ammonia recovery valve, most ammonia that contained in the waste gas has been dissolved in the condensate, the comdenstion water gets into aqueous ammonia recovery unit, can produce the aqueous ammonia that the PH value is about 11, these aqueous ammonia can be used as liquid fertilizer, both handled waste gas, can also produce aqueous ammonia liquid fertilizer, the odor is firstly cooled, the impact of the cooled odor on the exhaust gas treatment device is small, the service life of the exhaust gas treatment device is effectively prolonged, the odor can be prevented from being directly discharged, the pollution to the atmosphere is avoided, and the impact and the loss of the odor treatment on equipment are reduced.

Referring to fig. 15, the earthworm fertilizer preparation device comprises a sieving machine 31, a moisture regulating device 32, a bait preparing device 33, a bait paving device 34, an earthworm cultivating moving bed 35, a wormcast separating device 36 and a wormcast packaging device 37, the wormcast separating device 36 is further connected with an earthworm processing device, specifically, the product from the high-temperature aerobic fermentation tank 13 is sieved out of inorganic substances such as plastics, metals and glass by the sieving machine 31, the inorganic substances are conveyed to the moisture regulating device 32 after passing through the sieving machine 31, the moisture regulating device comprises a regulating bin, a moisture tester and a water nozzle, the product is conveyed to the regulating bin, the moisture content of the product is detected by the moisture tester, moisture is sprayed into the regulating bin by the water nozzle according to the requirement of earthworm bait, the moisture content of the fermented material is regulated, and then, the regulated output is conveyed to a bait preparation device 33, the bait preparation device 33 comprises a preparation bin, a stirring mechanism is arranged in the preparation bin, after the output is placed in the preparation bin, carbon-based materials such as soil and straw needed by earthworms are added into the preparation bin, the carbon-based materials are fully stirred to prepare earthworm bait, the moisture content is firstly regulated, the earthworm bait is prepared, the output and the added carbon-based materials can be successfully combined to avoid agglomeration, the prepared earthworm bait is paved on an earthworm cultivation moving bed 35 through a bait paving device 34, the bait paving device 34 adopts a paving machine commonly used in the market, earthworm seeds are then put into the earthworm paving machine, in a dark environment, proper temperature and humidity are kept, the earthworms propagate and digest the earthworm bait in large quantity to generate earthworm cast, after the earthworm bait is consumed, the earthworm cast passes through an earthworm cast separation device 36, and the earthworm cast separation device 36 adopts a separator on the market, separating wormcast, drying, packaging by wormcast packaging equipment 37 to obtain earthworm fertilizer, separating wormcast, putting living earthworms into earthworm processing equipment, wherein the earthworm processing equipment is a fermentation tank, putting liquid fertilizer zymocyte into the earthworm processing equipment, and preparing the earthworms into the liquid fertilizer.

Referring to fig. 14, the wastewater treatment unit comprises a temporary storage tank 38, a variable frequency flexible pump 39, a solid-liquid separator 40, an oil-water separator 41, an acid-base adjusting tank 42, an electric flocculation device 43, an air floatation residue scraper 44, an inclined tube sedimentation tank 45, a buffer tank 46, a primary DTRO membrane 47, a secondary DTRO membrane 48, an electric catalytic oxidation tank 49, a neutralization tank 50, a secondary inclined tube sedimentation tank 51, an ozone decoloration tank 52 and a drainage buffer tank 53 which are connected in sequence through a drainage pipe, specifically, the wastewater from the garbage sorting device enters the temporary storage tank 38, for the wet garbage wastewater, the COD content of the wastewater in the temporary storage tank 38 is about 8 thousands, the variable frequency flexible pump 39 pumps the wastewater in the temporary storage tank 38 and sends the wastewater into the solid-liquid separator 40, the variable frequency flexible pump 39 can adjust the pumping flow rate as required to prevent the emulsification of the oil contained in the wastewater (the emulsified oil is difficult to separate the oil from the water), the sludge separated by the solid-liquid separator 40 flows into the sludge tank, the liquid oil-water mixture enters an oil-water separator 41, an air-flotation slag scraping machine 44 is arranged in the oil-water separator 41, the oil-water separation is realized through the air-flotation slag scraping machine 44, the wastewater after the oil-water separation enters an acid-base adjusting tank 42, the PH value of the wastewater is adjusted to be between 6.9 and 7.1, hydrochloric acid is added if the PH value of the wastewater is alkaline, alkali (sodium hydroxide) is added if the PH value of the wastewater is acidic, the wastewater with neutral PH value enters an electric flocculation device 43, PAM and PAC are added simultaneously to help SS suspended matters in the wastewater to flocculate, the flocculated wastewater enters the air-flotation slag scraping machine 44, the air-flotation slag scraping machine 44 scrapes floating slag on the air flotation into a slag discharge pipeline and flows into a sludge tank, the wastewater passing through the air-flotation device enters an inclined tube sedimentation tank 45, the SS suspended matters in the wastewater are further separated and precipitated, sludge at the bottom of the inclined tube sedimentation tank 45 is automatically discharged into the sludge tank at regular time, the wastewater passing through the inclined tube sedimentation tank 45 flows into a buffer tank 46, the COD of the wastewater in the buffer tank 46 can be reduced to about 1 ten thousand, the COD can be reduced to about 600-800 by the primary DTRO membrane 47 and the secondary DTRO membrane 48, the wastewater enters the electrocatalytic oxidation tank 49 after passing through the primary DTRO membrane 47 and the secondary DTRO membrane 48 to further remove the COD and the BOD in the wastewater, the wastewater flows into the neutralization tank 50 from the electrocatalytic oxidation tank 49, then the wastewater passes through a secondary inclined tube sedimentation tank 51, the wastewater passing through the secondary inclined tube sedimentation tank 51 enters an ozone decolorizing tank 52, ozone generated by an ozone generator is introduced into the ozone decolorizing tank 52, colored substances in the wastewater are oxidized, the wastewater enters a drainage buffer tank 53 from the ozone decolorizing tank 52, the wastewater in the drainage buffer tank 53 reaches the sewage nano-tube discharge standard for nano-tube discharge to avoid wastewater pollution, sludge in a sludge tank is pumped out by a screw pump, filter-pressing the mixture by a plate-and-frame filter press to obtain sludge cakes, and putting the sludge cakes into a high-temperature fermentation tank 13 for fermentation.

The above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims

1. A method for treating wet waste as a resource, characterized in that: comprising the following steps:

1) Garbage pretreatment

a. Garbage sorting, sorting and separating wet garbage and dry garbage;

b. Crushing and dehydration, crushing the wet garbage separated by sorting into materials with a particle size of less than 30mm, and then dehydrating the materials, the moisture content of the materials after dehydration is 60%-70%, and the generated wastewater is treated with wastewater Harmless treatment, harmless treatment of the generated waste gas;

2) High temperature aerobic fermentation

Put the dehydrated material into the high-temperature aerobic fermentation equipment for 5-7 days of fermentation, obtain the fermentation product after the fermentation is completed, and carry out the waste gas harmless treatment of the waste gas produced in the aerobic fermentation;

3) Deployment

Adding carbon-based materials to the obtained fermented product and mixing well to make earthworm bait;

4) Preparation of vermicompost

Put the earthworm bait into the earthworm breeding equipment, put in earthworms or earthworm seeds, after the earthworm bait is consumed by the earthworms, separate the vermicompost through the separation equipment, obtain the earthworm fertilizer after drying and packaging, and process the separated earthworms into liquid fertilizer .

2 . The method for recycling wet waste according to claim 1 , wherein the harmless treatment of waste gas in the step 2) includes: 2 .

① Dust removal, the dust particles in the exhaust gas are separated by the dust collector;

②Gas-liquid separation, pass the dedusted exhaust gas into the heat exchange equipment, recover the heat in the exhaust gas for reuse, at the same time, condense the water vapor in the exhaust gas, dissolve most of the ammonia contained in the exhaust gas during the condensation process, and collect the condensed water Enter into the ammonia water recovery device to obtain ammonia water liquid fertilizer;

③ Deodorization of exhaust gas, introducing ozone with a concentration of 100 mg into the condensed exhaust gas to oxidize and decompose hydrogen sulfide, ammonia and alcohol VOCs in the exhaust gas;

④Washing, pass the ozone-treated waste gas into the water washing tower to absorb the unreacted ozone in the waste gas;

⑤Purification, pass the washed exhaust gas together with the exhaust gas generated in step 1) into the microwave UV photo-oxygen equipment for purification, decompose the macromolecular odor and low-concentration ammonia gas in the exhaust gas, and generate negative oxygen ions, purify the exhaust gas, and then purify the waste gas. The purified waste gas is passed into the alkaline washing tower to absorb residual ozone and then discharged.

3 . The method for recycling wet waste according to claim 1 , wherein the harmless treatment of waste water comprises: 3 .

The first step is to temporarily store the wastewater, and the wastewater is discharged into the temporary storage pool;

The second step: solid-liquid separation, the waste water in the temporary storage tank is extracted by the variable frequency flexible pump and enters the solid-liquid separation equipment, the separated sludge residue flows into the sludge tank, and the separated oil-water mixture enters the oil-water separation equipment for oil-water separation;

The third step: acid-base adjustment, the waste water after oil-water separation enters the acid-base adjustment tank, and the pH value of the waste water is adjusted between 6.9-7.1;

The fourth step: flocculation separation, the wastewater after acid-base adjustment enters the electro-flocculation equipment, and at the same time, PAM and PAC are added to flocculate the SS suspended matter in the wastewater, and the flocculated wastewater enters the air flotation device.

Remove the scum from the air flotation, and pass the removed scum into the sludge tank, and the wastewater passing through the air flotation device enters the inclined tube sedimentation tank to separate the SS suspended solids in the sedimentation wastewater, and the sludge at the bottom of the inclined tube sedimentation tank is regularly It is discharged to the sludge tank, and the wastewater passing through the inclined tube sedimentation tank flows into the buffer tank;

The fifth step: reverse osmosis treatment, the wastewater in the buffer tank passes through the two-stage DTRO membrane, and then enters the electrocatalytic oxidation tank to remove COD and BOD in the wastewater. Secondary inclined tube sedimentation tank for secondary inclined tube sedimentation;

The sixth step: ozone decolorization, the wastewater after the secondary inclined tube precipitation enters the ozone decolorization tank, and ozone is introduced into the ozone decolorization tank, the colored substances in the wastewater are oxidized, and the wastewater enters the drainage buffer tank from the ozone decolorization tank;

Part 7: Pipeline discharge, the wastewater in the drainage buffer pool has passed the test and meets the sewage discharge standard, and is discharged into the pipe.

4. The wet waste recycling treatment system is characterized in that it includes a metering device, a garbage sorting device, a high-temperature aerobic fermentation device, a vermicompost preparation device, and a waste water treatment unit, a waste gas treatment device, and a control device, which are arranged in sequence. The device is connected to the control metering device, the garbage sorting device, the high temperature aerobic fermentation device, and the vermicompost preparation device.

5 . The wet waste recycling processing system according to claim 4 , wherein the waste sorting device comprises a discharge bin, a first feeding screw, a bag breaker, a bar screen, Selection chain plate, magnetic separator, second feeding screw, dry and wet separator, pulverizer, third feeding screw, dehydrator, the said metering device is arranged on the front side of the unloading bin, the unloading bin, the dehydrator The discharge port is connected to the wastewater treatment unit.

6 . The wet waste recycling treatment system according to claim 4 , wherein the high-temperature aerobic fermentation device comprises a high-temperature fermentation tank, a closed negative pressure feeding device, and a closed negative pressure discharging device, 6 . The airtight negative pressure feeding device is connected to the feed port at the top of the high temperature fermentation tank, the feed end of the airtight negative pressure feeding device is connected to the discharge end of the dehydrator, and the airtight negative pressure discharge device is connected to the discharge port at the bottom of the high temperature fermentation tank. The discharge end of the pressing and discharging device is connected to the vermicompost preparation device, the high temperature fermentation tank is provided with an exhaust port, and the exhaust hole is connected to the waste gas treatment device.

7. The wet waste recycling treatment system according to claim 4 or 6, wherein the waste gas treatment device comprises a dust collector, a cooler, an induced draft fan, an ozone oxidation and deodorization mechanism connected in sequence through an exhaust pipe , Washing tower, microwave UV photo-oxygen mechanism, alkali washing tower, exhaust fan, exhaust pipe.

8. The wet waste recycling treatment system according to claim 4 or 5, wherein the waste water treatment unit comprises a temporary storage tank, a variable frequency flexible pump, a solid-liquid separator, an oil-water separator connected in sequence through a drain pipe Separator, acid-base adjustment tank, electric flocculation equipment, air flotation slag scraper, inclined tube sedimentation tank, buffer tank, primary DTRO membrane, secondary DTRO membrane, electrocatalytic oxidation tank, neutralization tank, secondary inclined tube sedimentation Tank, ozone decolorization tank, drainage buffer tank, and sludge tank connected with air flotation slag scraper, inclined tube sedimentation tank and secondary inclined tube sedimentation tank.

9 . The wet garbage resource treatment system according to claim 4 , wherein the vermicompost preparation device comprises a screening machine, a moisture adjustment device, a bait preparation device, a bait simple village device, and a worm culture mobile device arranged in sequence. 10 . The bed, the vermicompost separation equipment, the vermicompost packaging equipment, and the vermicompost separation equipment are also connected with the vermicompost processing equipment.