CN108723067A - A kind of integrated form domestic garbage resource processing system and its processing method - Google Patents

Abstract

The invention belongs to the technical field of domestic waste treatment, and specifically relates to an integrated domestic waste resource treatment system, in which a waste storage unit, a crushing and screening unit, a magnetic separation unit and a fermentation unit are sequentially connected; the gas outlets of the fermentation units are respectively connected with anaerobic Biogas pipeline and aerobic biogas pipeline, the anaerobic biogas pipeline is provided with the first valve, biogas pretreatment unit and biogas power generation unit in sequence; the aerobic biogas pipeline is provided with the second valve, biogas purification unit and biogas combustion unit in sequence . The present invention also provides an integrated domestic waste resource treatment method, 1) temporarily storing domestic waste; 2) removing stones after the domestic waste is crushed and sieved; then removing metal impurities by magnetic separation; 3) carrying out domestic waste Anaerobic fermentation; 4) Air is injected, and aerobic fermentation of domestic waste begins; 5) Domestic waste is transferred to a sanitary landfill for landfill. The processing system and method of the present invention have simple process, high resource utilization rate and less pollution discharge.

Description

An integrated domestic waste resource treatment system and its treatment method

technical field

The invention belongs to the technical field of domestic waste treatment, and in particular relates to an integrated domestic waste resource treatment system and a treatment method thereof.

Background technique

With the rapid development of my country's social economy and the acceleration of urbanization, the waste generated in the process of urban life and production is also increasing. Municipal solid waste has complex components, high moisture content, and high organic matter content. Random stacking or improper disposal will cause secondary pollution to the surrounding air, soil, and water.

At present, the main treatment methods of municipal solid waste in China are landfill and waste incineration for power generation. The landfill does not carry out harmless treatment. There are a large number of bacteria and viruses in the landfill waste. The landfill waste needs many years of natural degradation to reach a stable state. Unstabilized waste will produce a large amount of methane and gas for a long time. Leachate has serious hidden dangers to groundwater and the surrounding environment. The calorific value of domestic waste is low, and the cost of waste incineration for power generation is high, which will produce a large amount of toxic and harmful gases and fly ash. In addition, it is difficult to solve the "NIMBY effect" in the construction of waste incineration plants.

Therefore, it is necessary to design a new integrated domestic waste resource treatment system and its treatment method to overcome the above problems.

Contents of the invention

In order to overcome the deficiencies of the above-mentioned prior art, the object of the present invention is to provide an integrated household garbage resource treatment system and its treatment method, which can realize the goals of minimizing environmental pollution of household garbage and maximizing resource utilization.

In order to achieve the above purpose, the technical solution of the present invention is an integrated domestic waste resource treatment system, including a waste storage unit, a crushing and screening unit, a magnetic separation unit, a fermentation unit, a biogas pretreatment unit, a biogas purification unit, and a biogas power generation unit. unit and biogas combustion unit; the garbage storage unit, the crushing and screening unit, the magnetic separation unit and the fermentation unit are sequentially connected; the gas outlet of the fermentation unit is respectively connected with an anaerobic biogas pipeline and an aerobic A biogas pipeline, the anaerobic biogas pipeline is sequentially provided with a first valve, the biogas pretreatment unit and the biogas power generation unit; the aerobic biogas pipeline is sequentially provided with a second valve, the biogas purification unit and the biogas combustion unit.

Further, the liquid outlet of the fermentation unit is connected with a leachate pipeline, and a leachate treatment unit is provided on the leachate pipeline, and a leachate circulation and refill bypass is connected to the leachate pipeline, and the The outlet port of the leachate circulation backfill bypass is connected to the fermentation unit, and a bypass valve is arranged on the leachate circulation backfill bypass.

Further, the garbage storage unit includes a garbage bin for temporarily storing domestic garbage, and the garbage bin is provided with an odor monitor for monitoring the odor concentration and an automatic spraying device for spraying odor inhibitors , the odor monitor is connected with an automatic sprinkler.

Further, the crushing and screening unit includes a crushing device for crushing garbage, a screw propeller for transporting garbage, and a screening device for screening garbage connected in sequence; the magnetic separation unit includes A permanent magnet roller magnetic separator for removing metal impurities; the feed inlet of the permanent magnet roller magnetic separator is connected with the discharge port of the screening device, and the discharge of the permanent magnet roller magnetic separator is The port is connected to the fermentation unit.

Further, the fermentation unit includes a fermenter body for fermenting domestic waste, and the gas outlet of the fermenter body is connected to the air inlet of the anaerobic biogas pipeline and the air inlet of the aerobic biogas pipeline respectively. The liquid outlet of the fermentation tank is connected with the liquid inlet of the leachate pipeline; the fermentation tank is provided with a ventilation pipe for injecting air into the garbage dump.

Furthermore, the ventilation pipe is a Teflon stainless steel pipe, and several ventilation holes are evenly arranged on the Teflon stainless steel pipe, and the surface of the Teflon stainless steel pipe is wound with short-fiber needle-punched geotextiles.

Further, the leachate treatment unit includes a two-stage DTRO device for treating the permeate produced by the fermentation unit and an MVR evaporator for treating the concentrated water produced by the two-stage DTRO device, the two The liquid inlet of the two-stage DTRO device is connected with the fermentation unit, and the concentrated water outlet of the two-stage DTRO device is connected with the MVR evaporator.

Further, the biogas pretreatment unit includes a first tower biogas dehydrator for dehydration, a first biological desulfurization device for desulfurization, and a membrane biogas decarbonization purification device for decarbonization, which are connected in sequence. The biogas power generation unit includes a gas storage tank, a biogas boiler and a biogas generator set; the first tower biogas dehydrator is connected to the first valve, the membrane method biogas decarbonization purification equipment is connected to the gas storage tank, the storage The gas tank is respectively connected with the biogas boiler and the biogas generating set.

Further, the biogas purification unit includes a second tower-type biogas dehydrator for dehydration and a second biological desulfurization device for desulfurization connected in sequence, and the biogas combustion unit includes an internal combustion biogas dehydrator for burning purified biogas Flare; the second tower biogas dehydrator is connected to the second valve, and the second biological desulfurization equipment is connected to the internal combustion biogas torch.

The present invention also provides an integrated domestic waste resource treatment method, which includes the following steps:

1) Put domestic garbage in the garbage storage unit for temporary storage;

2) Transport the domestic waste to the crushing and screening unit, and remove the stones in the domestic waste after crushing and screening; then remove metal debris by magnetic separation through the magnetic separation unit;

3) Close the second valve and bypass valve, open the first valve, domestic waste enters the fermentation tank of the fermentation unit for anaerobic fermentation, and the biogas generated by anaerobic fermentation enters the biogas pretreatment unit for dehydration, desulfurization and desulfurization in sequence Carbon treatment, after pretreatment, the biogas enters the biogas power generation unit for power generation; the leachate generated by the anaerobic reaction enters the leachate treatment unit through the pipeline and is discharged or reused after reaching the standard;

4) When the BDM value of domestic waste in the fermenter is detected to be less than 6%, it is considered that the domestic waste is in the late stage of anaerobic reaction; when the domestic waste is in the late stage of anaerobic reaction, open the second valve and bypass valve, and close the first One valve, open the fan to inject air into the garbage dump in the fermentation tank, the domestic garbage starts to undergo aerobic fermentation, and the biogas generated by aerobic fermentation enters the biogas purification unit for dehydration and desulfurization in turn, and the purified biogas enters the biogas combustion Safe combustion in the unit; part of the leachate produced by aerobic fermentation is refilled into the fermentation unit, and the rest of the leachate enters the leachate treatment unit through the pipeline for treatment and discharge or reuse after reaching the standard;

5) The domestic waste is transferred to the sanitary landfill for landfill after anaerobic fermentation and aerobic fermentation in the fermentation unit to reach a basic stable state.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The integrated domestic waste resource treatment system and its treatment method provided by the present invention can properly handle domestic waste and fully utilize it as a resource; the process is simple, the resource utilization rate is high, the degree of mechanization is high, and the economic benefit Good, less pollution discharge;

(2) The integrated domestic waste resource treatment system provided by the present invention uses the high-concentration biogas produced by anaerobic fermentation to be treated by the biogas pretreatment unit for power generation, and the low-concentration biogas produced by aerobic fermentation is treated by the biogas purification unit Safe combustion to realize high resource utilization of biogas;

(3) In the integrated domestic waste resource treatment system provided by the present invention, part of the permeate produced by the aerobic fermentation of the waste in the fermentation unit is refilled into the waste in the fermentation unit, which can adjust the humidity in the waste pile and provide the necessary for the process of microbial degradation of waste. The water replenishment improves the living environment of microorganisms; in addition, the leachate contains a large number of dominant bacteria that degrade garbage, which greatly improves the efficiency of degrading garbage in the warehouse and shortens the system operation cycle;

(4) The integrated domestic waste resource treatment method provided by the present invention firstly anaerobically ferments the waste, and then aerobically ferments the waste to reach a basically stable state, and finally transfers the waste to a sanitary landfill for standardized landfill, and biogas utilization High economic benefit, less pollution discharge.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the process flow diagram of the integrated domestic waste resource treatment system provided by the embodiment of the present invention;

In the figure: 1. Garbage storage unit, 2. Crushing and screening unit, 3. Magnetic separation unit, 4. Fermentation unit, 5. First valve, 6. Second valve, 7. Bypass valve, 8. Fan, 9 1. Biogas pretreatment unit, 10. Biogas power generation unit, 11. Biogas purification unit, 12. Biogas combustion unit, 13. Leachate treatment unit.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figure 1, the embodiment of the present invention provides an integrated domestic waste resource treatment system, including a waste storage unit 1, a crushing and screening unit 2, a magnetic separation unit 3, a fermentation unit 4, a biogas pretreatment unit 9, a biogas Purification unit 11, biogas power generation unit 10 and biogas combustion unit 12; wherein, garbage storage unit 1, crushing and screening unit 2, magnetic separation unit 3 and fermentation unit 4 are connected in sequence; the gas outlets of fermentation unit 4 are respectively connected with anaerobic biogas Pipeline and aerobic biogas pipeline, the first valve 5, the biogas pretreatment unit 9 and the biogas power generation unit 10 are sequentially arranged on the anaerobic biogas pipeline; Two valves 6 , the biogas purification unit 11 and the biogas combustion unit 12 . In this embodiment, the top of the fermentation tank of fermentation unit 4 is provided with a biogas transmission pipeline, which can automatically switch between anaerobic biogas pipeline and aerobic biogas pipeline. When the garbage in fermentation unit 4 is in anaerobic fermentation , the biogas transmission pipeline is connected to the biogas pretreatment unit 9, and the biogas enters the biogas power generation unit 10 to generate electricity; when the fermentation unit 4 is switched to the aerobic reaction mode, the biogas transmission pipeline is correspondingly switched to be connected to the biogas purification unit 11, and the biogas enters the biogas The combustion unit 12 burns; the garbage in the fermentation unit 4 undergoes anaerobic fermentation and aerobic fermentation in sequence, and then reaches a basically stable state, and the garbage is finally transferred to a sanitary landfill for standardized landfill. The integrated domestic waste resource treatment system and its treatment method provided in this embodiment can properly handle domestic waste and fully utilize it as a resource; the process is simple, the resource utilization rate is high, the degree of mechanization is high, and the economic benefit is good. Less pollution discharge.

Further, the liquid outlet of the fermentation unit 4 is connected with a leachate pipeline, and the leachate treatment unit 13 is arranged on the leachate pipeline, and a leachate circulation and refill bypass is connected on the leachate pipeline, and the The outlet port of the leachate circulation backfill bypass is connected to the fermentation unit 4, and a bypass valve 7 is provided on the leachate circulation backfill bypass. In this embodiment, the bottom of the fermentation tank of the fermentation unit 4 is provided with a leachate circulation and refill bypass, and a bypass valve 7 is provided on the leachate circulation and refill bypass; when the garbage in the fermentation unit 4 is in anaerobic fermentation, the bypass When the valve 7 is closed, all the leachate enters the subsequent leachate treatment unit 13; when the fermentation unit 4 is switched to the aerobic reaction mode, the bypass valve 7 is automatically opened, and part of the leachate is circulated and refilled into the garbage dump of the fermentation tank. The leachate enters the subsequent leachate treatment unit 13 . During aerobic fermentation, part of the leachate is refilled into the garbage in the fermentation unit 4, which can adjust the humidity in the garbage pile, provide the necessary water supplement for the microbial degradation of garbage, greatly improve the efficiency of its degradation of garbage in the bin, and shorten the system operation cycle.

Further, the garbage storage unit 1 includes a garbage bin for temporary storage of domestic garbage, and the garbage bin is provided with an odor monitor for monitoring the concentration of the odor and an automatic spray device for spraying odor inhibitors. The monitor is connected to the automatic sprinkler. The garbage bin in this embodiment is a micro-negative pressure sealed garbage bin, and the bin is equipped with an electro-hydraulic grab bucket; when the odor concentration in the bin exceeds the set concentration, the odor monitor can transmit the start signal to the automatic sprayer device to trigger automatic spraying of odor inhibitors; odor inhibitors can be a compound microbial preparation, which is a BM microbial preparation produced by Tianjin Jiannongyuan Biotechnology Co., Ltd. It can inhibit the breeding of flies and mosquitoes, and the whole system has a better operating environment.

Further, the crushing and screening unit 2 includes a crushing device for crushing rubbish, a screw propeller for transporting rubbish, and a screening device for screening rubbish connected in sequence; the rubbish components with low hardness are obtained in the crushing device After crushing, it is transported to the screening device by the screw propeller. The screening device sorts the garbage according to the size of the particles, and can remove the screened stones. Magnetic separation unit 3 comprises the permanent magnet roller magnetic separator that is used for magnetic separation to remove metal debris; The outlet of the outlet is connected with the fermentation unit 4. The metal objects in the domestic garbage are attracted by the permanent magnet roller magnetic separator and then fall into the metal collection box for recycling. Other garbage is not affected by the magnetic force and enters the subsequent processing unit.

Further, the fermentation unit 4 includes a fermenter body for fermenting domestic waste, and the gas outlets on the top of the fermenter body are respectively connected to the air inlet of the anaerobic biogas pipeline and the air inlet of the aerobic biogas pipeline, and the fermenter body The liquid outlet at the bottom is connected to the liquid inlet of the leachate pipeline; the fermentation tank is equipped with multiple sensors and ventilation pipes for injecting air into the garbage dump, and the multiple sensors are used to monitor the temperature of the garbage dump and the fermentation process. The pressure in the tank, the biogas concentration, the oxygen concentration and the carbon dioxide concentration, the ventilation pipe is connected with a fan 8, the ventilation pipe can run through the garbage dump, inject air into the garbage in the fermentation tank, and realize the rapid fermentation of garbage in an aerobic environment. As an embodiment, the fermentation tank is a vertical columnar fermentation tank, and multiple sensors installed in the tank can automatically measure parameters such as the temperature, pressure, biogas concentration, oxygen concentration, and carbon dioxide concentration of the garbage dump. The PLC records and sends to the terminal, and the terminal can judge the fermentation status of the garbage in the fermentation tank according to the continuous monitoring data. The PLC controller in this embodiment only monitors various parameters in the fermentation tank, and does not involve improvement of the PLC program. The fermentation tank in this embodiment can meet the requirements of aerobic fermentation or anaerobic fermentation of garbage in the warehouse; when the fermentation warehouse is in a sealed environment, the garbage in the warehouse will undergo anaerobic fermentation. The data records of the sensor can determine the anaerobic reaction cycle of the garbage. When it is judged that the garbage is in the late stage of the anaerobic reaction, it can switch to the aerobic reaction mode. At this time, the fan starts and injects the garbage into the warehouse through the ventilation duct. Air, that is, to achieve an aerobic environment in the warehouse.

Furthermore, the ventilation pipe is a corrosion-resistant and high-strength Teflon stainless steel tube. A number of ventilation holes are evenly arranged on the Teflon stainless steel tube to inject air into the garbage. The surface of the Teflon stainless steel tube is tightly wound with short fibers. Needle-punched geotextiles prevent fine debris from clogging ventilation holes.

Further, the leachate treatment unit 13 includes a two-stage DTRO (disk tube reverse osmosis) device for treating the permeate generated by the fermentation unit 4 and an MVR evaporation device for treating the concentrated water generated by the two-stage DTRO device. The liquid inlet of the two-stage DTRO device is connected to the fermentation unit 4, the concentrated water outlet of the two-stage DTRO device is connected to the MVR evaporator, and the leachate can be discharged or reused after the treatment reaches the standard. The permeate produced by fermentation unit 4 is subjected to reverse osmosis treatment through a two-stage DTRO device, and the obtained reverse osmosis concentrate is evaporated and crystallized through an MVR evaporator, and the mixed waste salt generated is treated as hazardous waste in bags. The two-stage DTRO device and MVR The water produced by the evaporator is disinfected and then enters the reuse water tank.

Further, the biogas pretreatment unit 9 includes a first tower biogas dehydrator for dehydration, a first biological desulfurization device for desulfurization, and a membrane biogas decarbonization purification device for decarbonization connected in sequence; the biogas power generation unit 10 includes a gas storage tank, a biogas boiler and a biogas generator set; the first tower biogas dehydrator is connected to the first valve 5, the membrane method biogas decarbonization purification equipment is connected to the gas storage tank, and the gas storage tank is respectively connected to the biogas boiler and biogas power generation Unit connection. The high-concentration biogas produced by anaerobic fermentation enters the biogas pretreatment unit 9 for dehydration, desulfurization and decarbonization in sequence, and then enters the biogas power generation unit 10 for power generation and utilization.

Further, the biogas purification unit 11 includes a second tower biogas dehydrator for dehydration and a second biological desulfurization device for desulfurization connected in sequence, and the biogas combustion unit 12 includes an internal combustion biogas torch for burning purified biogas, The biogas is mixed with air in the torch and burned, and discharged into the atmosphere through the exhaust pipe; the second tower biogas dehydrator is connected to the second valve 6, and the second biological desulfurization equipment is connected to the internal combustion biogas torch. The low-concentration biogas produced by aerobic fermentation enters the biogas purification unit 11 for dehydration and desulfurization in turn, and then enters the internal combustion biogas torch for safe combustion.

As shown in Figure 1, the embodiment of the present invention also provides an integrated domestic waste resource treatment method, which includes the following steps:

1) Put domestic garbage in the garbage bin of garbage storage unit 1 for temporary storage; when the odor concentration in the bin exceeds the set concentration, the odor monitor can transmit the start signal to the automatic spray device to trigger the automatic spray odor Gas inhibitor, while eliminating the stench, it can also inhibit the breeding of flies and mosquitoes;

2) Transport the domestic waste to the crushing and screening unit 2, crush it through the crushing device, and transfer it to the screening device by the screw propeller. After screening and removing the stones in the domestic waste, the screened waste is transferred to the magnetic separation unit 3, Remove metal impurities by magnetic separation with permanent magnet roller magnetic separator;

3) Close the second valve 6 and the bypass valve 7, open the first valve 5, the domestic garbage after magnetic separation enters the fermentation tank of the fermentation unit 4 for anaerobic fermentation, and the biogas generated by anaerobic fermentation enters the biogas pretreatment unit In 9, dehydration, desulfurization and decarbonization are carried out sequentially. After pretreatment, the biogas enters the biogas power generation unit 10 for power generation; the leachate generated by the anaerobic reaction enters the leachate treatment unit 13 through the pipeline, and passes through the two-stage DTRO device and the MVR evaporator Discharge or reuse after treatment reaches the standard;

4) Judging the anaerobic reaction cycle of the garbage according to the temperature of the garbage dump detected by the sensor in the fermentation tank, the pressure in the fermentation tank, the concentration of methane, the concentration of oxygen and the concentration of carbon dioxide; when the BDM (biological When the value is less than 6%, it is considered that the domestic waste is in the late stage of anaerobic reaction; when the domestic waste is in the late stage of anaerobic reaction, open the second valve 6 and the bypass valve 7, close the first valve 5, and turn on the fan 8 Air is injected into the garbage pile in the fermentation tank, and the domestic garbage starts to undergo aerobic fermentation. The biogas generated by aerobic fermentation enters the biogas purification unit 11 for dehydration and desulfurization in turn, and the purified biogas enters the biogas combustion unit 12 for safe combustion. Part of the leachate produced by aerobic fermentation is refilled into the fermentation unit 4, and the rest of the leachate enters the leachate treatment unit 13 through the pipeline and is discharged or reused after reaching the standard; during aerobic fermentation, part of the leachate is refilled into the fermentation bin garbage , can adjust the humidity inside the garbage dump, provide the necessary water supplement for the process of microbial degradation of garbage, and improve the living environment of microorganisms. In addition, the leachate contains a large number of dominant bacteria that degrade garbage. Reinjection is the process of supplementing the dominant bacteria in the microorganisms in the garbage dump, which can significantly improve the activity of the microorganisms in the garbage dump, and greatly improve its efficiency in degrading the garbage in the bin. Shorten the system operation cycle;

5) Household wastes undergo anaerobic fermentation and aerobic fermentation successively in the fermentation unit 4, and reach a basic stable state, and are transferred to sanitary landfills for landfill.

In the integrated domestic waste resource treatment system provided in this example, the waste undergoes anaerobic and aerobic reactions in the fermentation tank, the reaction conditions can be monitored and adjusted, and the waste can be fully fermented under optimal conditions, and the reaction speed is compared The natural conditions are greatly shortened; the high-concentration biogas generated by the garbage in the anaerobic stage is used for power generation, and the low-concentration biogas generated in the aerobic stage is burned. The system can automatically complete the switching operation according to the monitoring results. The configuration is reasonable and the economic benefits of biogas utilization are high.

The integrated domestic waste resource treatment process provided in this embodiment is reasonable, can realize the goal of minimizing environmental pollution of domestic waste and maximizing resource utilization, with less pollution discharge and good economic benefits.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. a kind of integrated form domestic garbage resource processing system, it is characterised in that：Including rubbish storage unit（1）, broken sieve Subdivision（2）, magnetic separating unit（3）, fermentation unit（4）, biogas pretreatment unit（9）, marsh gas purifying unit（11）, marsh gas power generation Unit（10）With biogas combustion unit（12）；The rubbish storage unit（1）, the crushing and screening unit（2）, the magnetic separation list Member（3）With the fermentation unit（4）It is sequentially connected；The fermentation unit（4）Gas outlet be connected separately with anaerobic methane pipeline With aerobic methane pipeline, the first valve is equipped on the anaerobic methane pipeline successively（5）, the biogas pretreatment unit（9）With The marsh gas power generation unit（10）；The second valve is equipped on the aerobic methane pipeline successively（6）, the marsh gas purifying unit （11）With the biogas combustion unit（12）.

2. a kind of integrated form domestic garbage resource processing system as described in claim 1, it is characterised in that：The fermentation is single Member（4）Liquid outlet be connected with diafiltration liquid pipeline, the diafiltration liquid pipeline is equipped with percolate processing unit（13）, the diafiltration Be connected with leachate tail water recharge bypass on liquid pipeline and the leachate tail water recharge bypass outlet end be connected to it is described Fermentation unit（4）, by-passing valve is equipped in leachate tail water recharge bypass（7）.

3. a kind of integrated form domestic garbage resource processing system as described in claim 1, it is characterised in that：The garbage storing Memory cell（1）Include the trash repository for interim storage house refuse, is equipped in the trash repository for monitoring odor concentration Foul smell monitor and automatic spraying device for spraying odor inhibitor, the foul smell monitor connect with automatic spraying device It connects.

4. a kind of integrated form domestic garbage resource processing system as described in claim 1, it is characterised in that：The broken sieve Subdivision（2）Including sequentially connected breaker for shredding refuse, it is used for transmission the spiral propeller of rubbish and is used for Sieve the screening plant of rubbish；The magnetic separating unit（3）It include the permanent magnetic roll type magnetic separator that metal sundries are removed for magnetic separation；Institute The feed inlet for stating permanent magnetic roll type magnetic separator is connected with the discharge port of the screening plant, the discharge port of the permanent magnetic roll type magnetic separator With the fermentation unit（4）It is connected.

5. a kind of integrated form domestic garbage resource processing system as claimed in claim 2, it is characterised in that：The fermentation is single Member（4）Include the fermentation tank for house refuse of fermenting, the gas outlet of the fermentation tank respectively with the anaerobic methane pipe The air inlet on road is connected with the air inlet of the aerobic methane pipeline；The liquid outlet of the fermentation tank and the diafiltration liquid pipeline Inlet be connected；The ventilation shaft for injecting air into junk-heap body is equipped in the fermentation tank.

6. a kind of integrated form domestic garbage resource processing system as claimed in claim 5, it is characterised in that：The ventilation duct Road is Teflon stainless steel tube, and several ventilation holes, the Teflon stainless steel tube are uniformly arranged on the Teflon stainless steel tube Surface wrap have chopped fiber needle-punched geotextiles.

7. a kind of integrated form domestic garbage resource processing system as claimed in claim 2, it is characterised in that：The percolate Processing unit（13）Including being used for the fermentation unit（4）The two-stage DTRO devices and be used for that the penetrating fluid of generation is handled To the MVR evaporators that the concentrated water that two-stage DTRO devices generate is handled, inlet and the hair of the two-stage DTRO devices Ferment unit（4）It is connected, the concentrated water outlet of the two-stage DTRO devices is connected with the MVR evaporators.

8. a kind of integrated form domestic garbage resource processing system as described in claim 1, it is characterised in that：The biogas is pre- Processing unit（9）Including sequentially connected the first tower methane dehydrator for being used for dehydration, for the first biological desulphurization of desulfurization Equipment and embrane method Methane decarbonization cleaning equipment for decarburization, the marsh gas power generation unit（10）Including air accumulator, methane boiler And Biogas Generator Set；The first tower methane dehydrator and the first valve（5）Connection, the embrane method Methane decarbonization purification are set Standby to be connect with the air accumulator, the air accumulator is connect with the methane boiler and the Biogas Generator Set respectively.

9. a kind of integrated form domestic garbage resource processing system as described in claim 1, it is characterised in that：The biogas is net Change unit（11）Including sequentially connected the second tower methane dehydrator for dehydration and for the second biological desulphurization of desulfurization Equipment, the biogas combustion unit（12）It include the internal-combustion biogas torch for biogas after purification of burning；Described second is tower Methane dehydrator and the second valve（6）Connection, second biological desulfurization apparatus are connect with the internal-combustion biogas torch.

10. a kind of integrated form domestic garbage resource processing method, which is characterized in that this method comprises the following steps：

1）House refuse is placed in rubbish storage unit（1）It is temporary；

2）House refuse is transported to crushing and screening unit（2）, through stone broken, after screening in removing house refuse；It passes through again Magnetic separating unit（3）Magnetic separation removes metal sundries；

3）Close the second valve（6）And by-passing valve（7）, open the first valve（5）, house refuse enters fermentation unit（4）Hair Anaerobic fermentation is carried out in fermentation tank body, the biogas that anaerobic fermentation generates enters biogas pretreatment unit（9）In be dehydrated, taken off successively Sulphur and carbonization treatment, biogas enters marsh gas power generation unit after pretreatment（10）It generates electricity；The percolate that anaerobic reaction generates is logical Piping enters percolate processing unit（13）Handle rear discharge or reuse up to standard；

4）When detecting that the BDM values of the house refuse in fermentation tank are less than 6%, then it is assumed that house refuse is in anaerobic reaction Later stage；When house refuse is in the anaerobic reaction later stage, the second valve is opened（6）And by-passing valve（7）, close the first valve（5）, Open wind turbine（8）Air is injected in junk-heap body into fermentation tank, house refuse proceeds by aerobic fermentation, aerobic fermentation The biogas of generation enters marsh gas purifying unit（11）In carry out successively dehydration and desulfurization process, purified biogas enter biogas combustion Burn unit（12）Middle safe combustion；The percolate part recharge that aerobic fermentation generates is to fermentation unit（4）In, remaining percolate is logical Piping enters percolate processing unit（13）Handle rear discharge or reuse up to standard；

5）House refuse is in fermentation unit（4）In successively after anaerobic fermentation and aerobic fermentation, reach basicly stable state, turn It is filled to sanitary filling field.