CN114833180A

CN114833180A - Process for deodorizing household garbage, increasing methane yield and accelerating garbage degradation

Info

Publication number: CN114833180A
Application number: CN202210442175.2A
Authority: CN
Inventors: 叶志敏; 尹璇; 邹金钢; 陈泽龙; 周海霞; 单双
Original assignee: Shenzhen Tongchuang Environmental Protection Technology Co ltd
Current assignee: Shenzhen Tongchuang Environmental Protection Technology Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-08-02
Anticipated expiration: 2042-04-25
Also published as: CN114833180B

Abstract

The application relates to a process for deodorizing household garbage, improving methane yield and accelerating garbage degradation, which comprises the following steps: step 1, proportionally mixing a microbial agent and molasses for culturing and expanding hair to form a hair expanding liquid; step 2, uniformly mixing the hair expanding liquid and ultrafiltration water according to a certain volume ratio to prepare a mixed liquid A; uniformly mixing the hair expanding liquid, ultrafiltration water and glucose according to a certain volume ratio to prepare a mixed liquid B; step 3, spraying the mixed liquid to the surface of the garbage: spraying the mixed solution A in the morning and spraying the mixed solution B in the evening; step 4, welding the HDPE film to form a covering film and an air passage; covering the covering film and the air channel on the surface of the garbage; step 5, arranging a landfill gas collecting pipe below the covering film; an air exhaust pipeline assembly is installed on the covering film, and the landfill gas collecting pipe penetrates through the covering film to be communicated with the air exhaust pipeline assembly to extract landfill gas. The application has the effects of improving the deodorization rate of the household garbage, improving the methane yield and accelerating the garbage degradation.

Description

Process for deodorizing household garbage, increasing methane yield and accelerating garbage degradation

Technical Field

The application relates to the technical field of garbage treatment, in particular to a process for deodorizing household garbage, improving methane yield and accelerating garbage degradation.

Background

Along with the acceleration of the urbanization process in China and the increase of urban population, garbage as waste generated in daily life and production processes is also increased rapidly. The malodorous substances generated by the decomposition of the garbage stacked in the garbage transfer station and the garbage landfill not only seriously affect the quality of the ambient air, but also harm the health of residents and cause diseases such as respiratory tract diseases.

The existing domestic garbage treatment technologies mainly comprise sanitary landfill, incineration, compost and the like, wherein the sanitary landfill is the most widely applied technology for treating urban domestic garbage, the existing garbage landfill is a simple landfill or an anti-seepage landfill, most of the existing garbage landfills are outdoor sites, organic garbage can generate gases with strong pungent odor after being piled up and fermented, and the gases are easy to volatilize and escape into the atmosphere to cause atmospheric pollution; and the garbage accumulation amount of the garbage site is large, the garbage degradation rate is low, the content of methane in the produced landfill gas is low, and the resource recycling is difficult to meet.

In view of the above problems, the inventor believes that the existing garbage treatment process has the defects of low treatment efficiency and serious odor pollution.

Disclosure of Invention

In order to promote domestic waste treatment efficiency, reduce the stink and pollute, the application provides a domestic waste deodorization, improves methane output, accelerates the technology of rubbish degradation.

The process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation adopts the following technical scheme:

a process for deodorizing domestic garbage, increasing methane yield and accelerating garbage degradation comprises the following treatment steps;

step 1, preparing a hair expansion liquid: selecting a microbial agent and molasses for mixed culture, wherein the microbial agent and molasses are mixed and cultured according to the mass ratio (0.5-1.5): (3-17) performing mixed culture and hair expansion at the culture temperature of 25-27 ℃, keeping the pH of a culture system at 4-5, and culturing for 7 days to form hair expansion liquid; the microbial agent is prepared from bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes according to the mass ratio of (8-12): (0.8-1.2): 1: (0.6-1): 1: (0.5-1.5) mixing;

step 2, preparing a mixed solution:

step 2-1, mixing a part of the hair extension liquid and ultrafiltration water according to the volume ratio (0.5-1.5): (3-7) uniformly mixing to form a mixed solution A;

step 2-2, mixing the rest of the hair extension liquid, the ultrafiltration water and the glucose according to the volume ratio (0.5-1.5): (7-15): (0.2-0.5) uniformly mixing to form a mixed solution B;

step 3, spraying a mixed solution:

step 3-1, uniformly spraying the mixed solution A onto the surface of the household garbage in the morning, wherein the mass ratio of the mixed solution to the garbage is 1.5: 1000, parts by weight;

step 3-2, uniformly spraying the mixed liquor B on the surface of the household garbage at night, wherein the mass ratio of the mixed liquor to the garbage is 1.5: 1000, parts by weight;

step 4, laminating: welding the HDPE film by a hot wedge welding method to form a covering film and an air passage; covering the cover film and the air channel on the surface of the garbage in the step 3-2;

step 5, air extraction: and arranging a landfill gas collecting pipe below the covering film, punching the covering film, installing an air exhaust pipeline assembly at the hole, and enabling the landfill gas collecting pipe under the film to penetrate out of the hole to be communicated with the air exhaust pipeline assembly on the film to exhaust generated landfill gas.

By adopting the technical scheme, the microbial agent prepared by mixing bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes according to a certain proportion is adopted in the application, and the microorganisms in the microbial agent are maintained in a certain proportion range, so that the microbial agent is beneficial to mutual matching in the microbial fermentation process and the balance state in the fermentation process is maintained; mixing a microbial agent and molasses according to a specific proportion, expanding and culturing to ensure that the microbial activity can be kept stable;

high-concentration mixed liquor A formed by mixing hair expanding liquid and ultrafiltration water according to a specific ratio is sprayed on the surface of the garbage in the morning, and microorganisms in the mixed liquor A are subjected to aerobic fermentation, so that odor generated by the garbage is decomposed and converted, and a good deodorization effect is achieved; the low-concentration mixed liquor B formed by mixing the hair expanding liquid, the ultrafiltration water and the glucose according to a specific proportion is sprayed on the surface of the garbage at night, and the garbage body of the mixed liquor is sprayed twice in the morning and at night.

The method comprises the steps of selecting a specific microbial agent and molasses to mix according to a specific proportion to prepare a hair extension liquid, mixing the hair extension liquid with ultrafiltration water, glucose and the like according to a specific proportion to obtain a mixed liquid, spraying the mixed liquid with different concentrations in the morning and evening, and using an oxygen-consuming and anaerobic environment, so that various microorganisms in the mixed liquid are cooperatively matched in the garbage treatment process, a good cooperative effect can be exerted, the speed of garbage degradation is accelerated, the yield of methane is greatly increased, and odorous gases such as hydrogen sulfide and the like in the garbage are decomposed and converted, thereby achieving the purpose of deodorization; can also inhibit the activity of pathogenic bacteria in the garbage, has certain bacteriostatic action, and further improves the safe and environment-friendly effect of garbage treatment.

Preferably, the mass ratio of the microbial agent to the molasses in the step 1 is 1: (5-15) the mixed culture and hair expansion.

By adopting the technical scheme, the molasses mainly contains a large amount of fermentable sugar which is a good fermentation raw material and can be used as a substrate or a base material of fermentation products such as yeast, organic acid and the like; the microbial agent and the molasses are mixed and prepared according to a specific proportion range and then are subjected to expansion culture, so that the stability of thalli in the microbial agent is improved, the thalli keep good activity before degrading the garbage, and the efficiency of degrading the garbage by using mixed liquid is improved.

Preferably, in the step 2-1, the volume ratio of the hair extension liquid to the ultrafiltration water is 1: (3-5) mixing uniformly to form a mixed solution A.

By adopting the technical scheme, the ratio of the hair expanding liquid to the ultrafiltration water in the mixed liquid A is 1: (3-5) the ultrafiltration water dilutes the hair extension liquid less, so that the concentration of the mixed liquid A is higher, the mixed liquid A has better biological liquid viscosity, the mixed liquid A sprayed on the surface of the garbage can form an effect similar to a biological film, the conversion and decomposition of garbage odor and the like are promoted, and a better deodorization effect is achieved; and sufficient gaps are reserved among the household garbage which is just piled up in the morning, and the mixed liquid A flowing into the garbage can enter the gaps to be in full contact with the garbage, so that the garbage is degraded.

Preferably, the hair extension liquid, the ultrafiltration water and the glucose in the step 2-2 are mixed according to a volume ratio of 1: (8-10): 0.3, and mixing uniformly to form a mixed solution B.

By adopting the technical scheme, the glucose is added into the mixed liquor B and can be used as a nutrient substrate for culturing and breeding the microorganisms, so that the activity of the microorganisms is further promoted, the content of the microorganisms in the mixed liquor B is increased, the biological activity is stronger, and the waste degradation is facilitated; ultrafiltration water increases expanding the dilution of hair liquid in mixed liquid B, make mixed liquid B's concentration reduce, spray mixed liquid B evening, compare in the rubbish of piling up in the morning, through the deposit of day on daytime, rubbish has the settlement of certain degree, and then make the clearance between the rubbish of evening diminish, more rare mixed liquid B's mobility and permeability are better, thereby infiltration that can be more abundant is to between the rubbish, and then realize the abundant degradation to rubbish, and through mixed liquid A on daytime to the oxygen consumption of rubbish decompose the back, be equipped with mixed liquid B's anaerobic decomposition evening again, and then help accelerating the degradation of domestic waste, promote methane gas output and promote.

The concentration of mixing liquid A and mixing liquid B is further limited, so that the mixing liquid A and the mixing liquid B can be mutually cooperated and act together, and the deodorization, degradation and methane yield of garbage can be obviously improved.

Preferably, the microbial agent in the step 1 is prepared from bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes according to a mass ratio of 10:1:1:1:1:1, mixing to obtain the product.

By adopting the technical scheme, the microbial agent is selected from bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes, and the bacillus can quickly absorb a soluble substrate into cells for intracellular metabolism by virtue of a large specific surface area; the actinomycetes have multicellular hyphae, can decompose some glucose and dissolve lignin, and are dominant flora for decomposing the xylogen glucose in the high-temperature stage of garbage biodegradation; the rhodotorula plays an important role in decomposing and stabilizing organic components of the garbage, and the secreted extracellular enzyme can hydrolyze organic matters, and hypha of the rhodotorula penetrates into organic matter molecules, so that the rhodotorula plays a certain physical destruction role in the garbage and promotes biochemical reaction; the thalli can play an important role in decomposition and transformation at different stages of the fermentation process respectively so as to help to realize the degradation of the garbage, and the thalli are compounded in a specific proportion, so that a good synergistic effect can be generated among the thalli, a high-activity and high-stability 'Qiangheng' colony is formed under an acidic culture condition, and the thalli has good beneficial effects on removing odor and promoting the yield of methane in the garbage treatment process.

Preferably, the molasses in the step 1 is cane molasses.

By adopting the technical scheme, the cane molasses has higher sucrose content and biotin content, the biotin can promote the decomposition of fat and carbohydrate, and the biotin and the sucrose can maintain the activity of thalli, thereby ensuring better degradation efficiency during the fermentation of mixed liquor.

Preferably, the pH of the culture system is maintained at 4 in step 1.

By adopting the technical scheme, the PH value of a culture system of the hair extension liquid is kept at 4, each thallus in the microbial agent obtained by culture in an acidic environment has relatively stable bioactivity, the dilution multiple of the hair extension liquid is not more than 15 times from the ratio of the hair extension liquid to the ultrafiltration water, the prepared mixed liquid is acidic, the acidic mixed liquid is sprayed on the surface of garbage, the acidic condition enables the bioactivity of some other microorganisms in the garbage to be inhibited or incapable of living, and the microbial thallus in the mixed liquid forms 'strong bacteria', so that the microbial agent can be fully propagated and fermented, the sterilization and bacteriostasis effects are achieved, the garbage degradation rate is improved, the methane gas production is increased, and the deodorization effect is better.

Preferably, in the step 5, the landfill gas collecting pipes comprise landfill pipes arranged deep in the garbage and collecting pipes arranged transversely and longitudinally, and the transverse collecting pipes extend to cover gas generating units with a certain area; the longitudinal collecting pipe is communicated with the landfill pipe; and the outer side of the landfill gas collecting pipe is also provided with gravels with different grades.

By adopting the technical scheme, the transverse collecting pipe extends to cover the gas generating units with a certain area, which is beneficial to realizing the landfill gas collection of a required layer; the longitudinal collecting pipe is communicated with the landfill pipe, and can lead out deep landfill gas; and the outside of the landfill gas collecting pipe is also provided with gravels with different gradations, and the gravels with different gradations play a role in guiding, discharging and filtering the landfill gas.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the application, a microbial agent prepared by mixing bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes according to a certain proportion is adopted, and microorganisms in the microbial agent are maintained in a certain proportion range, so that the microbial agent is beneficial to mutual matching in the microbial fermentation process and the balance state in the fermentation process is maintained; the microbial agent and the molasses are mixed according to a specific proportion for expanding culture, so that the microorganisms have good stable activity, and the degradation effect of the microorganisms on garbage is improved; 2. mixing the hair expanding liquid and ultrafiltration water according to a specific proportion to prepare a mixed liquid A, mixing the hair expanding liquid, the ultrafiltration water and glucose according to a specific proportion to prepare a mixed liquid B, spraying the mixed liquid A in the morning for aerobic fermentation, spraying the mixed liquid B in the evening, covering an HDPE (high-density polyethylene) film on the surface of garbage for anaerobic fermentation, and matching the sprayed mixed liquid in the morning and evening, so that various microorganisms can exert a good synergistic effect in the garbage treatment process, the garbage treatment process is favorable for accelerating the garbage degradation rate and greatly increasing the yield of methane, and odorous gases such as hydrogen sulfide and the like can be decomposed to achieve a good deodorization purpose;

3. the microbial agent selects several thalli of bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes, the thalli can play an important role in decomposition and transformation at different stages of the fermentation process to help to realize the degradation of garbage, and the thalli are compounded in a specific proportion to generate a good synergistic cooperation effect, so that the microbial agent has good beneficial effects on the removal of odor and the promotion of methane yield in the garbage treatment process; the microbial agent is subjected to expanding culture under the condition of molasses mixing and pH value of 4-5, and the microorganisms can form 'strong bacteria' in the garbage degradation process, so that better bacteriostasis and sterilization effects are achieved; the activity of pathogenic bacteria in the garbage is inhibited, and the safety and environmental protection effects of garbage treatment are improved; 4. the process has the advantages of deodorizing the garbage, accelerating the methane gas production rate, increasing the gas production rate and accelerating the garbage degradation, is simple to operate, safe and efficient, is convenient to popularize and use on a large scale, and has good application prospect; according to the method, the landfill gas is collected by adopting the process of combining gas production under the membrane and collection on the membrane, the landfill gas produced by the landfill is collected to the maximum extent, and the method is favorable for reducing the leakage of gases such as methane in the landfill.

Detailed Description

The present application will be described in further detail with reference to examples.

The sources of the raw materials for the preparations, examples and comparative examples of the present application are detailed in table 1.

TABLE 1

Raw materials	Source information
		Bacillus	Ergle environmental protection Biotechnology (Nanjing) Ltd
Lactic acid bacteria	Ergle environmental protection Biotechnology (Nanjing) Ltd
		Streptococcus thermophilus	Ergle environmental protection Biotechnology (Nanjing) Ltd
Rhodotorula yeast	Ergle environmental protection Biotechnology (Nanjing) Ltd
		Actinomycetes	Ergle environmental protection Biotechnology (Nanjing) Ltd
Photosynthetic bacteria	Ergle environmental protection Biotechnology (Nanjing) Ltd
		Cane molasses	Shandong Xinqi chemical engineering and technology Co Ltd
Glucose	Shijiazhuang Zhongde chemical technology Co Ltd

Preparation example

Preparation example 1

The preparation example discloses a microbial agent which comprises bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes.

The preparation example also discloses a preparation method of the microbial agent, which specifically comprises the following steps:

s1, respectively activating and culturing Bacillus, lactic acid bacteria, Streptococcus thermophilus, Rhodotorula, photosynthetic bacteria and Actinomycetes to obtain the final product with concentration of 1 × 10 ⁸ CFU/ml of bacillus suspension liquid, lactobacillus suspension liquid and thermophilic chainA coccobacillus suspension liquid, a rhodotorula suspension liquid, a photosynthetic bacteria suspension liquid and an actinomycete suspension liquid;

s2, respectively inoculating the strain suspension liquid to a PDA culture medium by an inoculation amount of 5%, performing single-strain shake flask fermentation culture on a shaking table at a culture temperature of 34 ℃, at a shaking table oscillation speed of 150rpm for 72h to obtain a bacillus strain suspension, a lactic acid bacterium strain suspension, a streptococcus thermophilus strain suspension, a rhodotorula strain suspension, a photosynthetic bacterium suspension and an actinomycete strain suspension;

s3, mixing 8kg of bacillus suspension, 0.8kg of lactic acid bacteria suspension, 1kg of streptococcus thermophilus suspension, 0.6kg of rhodotorula suspension, 1kg of photosynthetic bacteria suspension and 0.5kg of actinomycetes suspension, adding the mixture into a stirring pot, and uniformly stirring at the speed of 120r/min for 20min to obtain the microbial agent.

Preparation example 2

The preparation example discloses a method for preparing a microbial agent, and the difference between the preparation example and the preparation example 1 lies in that the component proportions of the bacterial suspensions in S3 are different, and specifically the method comprises the following steps: mixing 12kg of bacillus suspension, 1.2kg of lactobacillus suspension, 1kg of streptococcus thermophilus suspension, 1kg of rhodotorula suspension, 1kg of photosynthetic bacteria suspension and 1.5kg of actinomycetes suspension, adding the mixture into a stirring pot, and uniformly stirring at the speed of 120r/min for 20min to obtain the microbial agent.

Preparation example 3

The preparation example discloses a method for preparing a microbial agent, and the difference between the preparation example and the preparation example 1 lies in that the component proportions of the bacterial suspensions in S3 are different, and specifically the method comprises the following steps: mixing 10kg of bacillus suspension, 1kg of lactobacillus suspension, 1kg of streptococcus thermophilus suspension, 1kg of rhodotorula suspension, 1kg of photosynthetic bacteria suspension and 1kg of actinomycetes suspension, adding the mixture into a stirring pot, and uniformly stirring at the speed of 120r/min for 20min to obtain the microbial agent.

Preparation example 4

The preparation example discloses a method for preparing a microbial agent, and the difference between the preparation example and the preparation example 1 lies in that the component proportions of the bacterial suspensions in S3 are different, and specifically the method comprises the following steps: 5kg of bacillus suspension, 2kg of lactobacillus suspension, 0.5kg of streptococcus thermophilus suspension, 1.5kg of rhodotorula suspension, 0.5kg of photosynthetic bacteria suspension and 0.2kg of actinomycetes suspension are mixed and added into a stirring pot, and the mixture is stirred at a constant speed of 120r/min for 20min to obtain the microbial agent.

Preparation example 5

The preparation example discloses a method for preparing a microbial agent, and the difference between the preparation example and the preparation example 1 lies in that the component proportions of the bacterial suspensions in S3 are different, and specifically the method comprises the following steps: mixing 15kg of bacillus suspension, 0.5kg of lactic acid bacteria suspension, 1.5kg of streptococcus thermophilus suspension, 0.3kg of rhodotorula suspension, 1.5kg of photosynthetic bacteria suspension and 2kg of actinomycetes suspension, adding into a stirring pot, and uniformly stirring at a speed of 120r/min for 20min to obtain the microbial agent.

Examples

An implementation site: selecting a certain domestic garbage site, wherein kitchen waste, plastics and paper in garbage of the garbage site account for a large proportion, and the three types account for 85% -90% of the total amount of garbage; the garbage contains small contents of wood, bamboo, lime soil, brick, tile, ceramic, glass, metal and the like, and the contents of the wood, bamboo, lime soil, brick, tile, ceramic, glass, metal and the like account for 10-15% of the total garbage. Dividing the garbage field into 21 experimental regions with the same area according to the area, wherein the quantity of domestic garbage in each experimental region is about 5 tons, and a 10-meter separation zone is reserved between every two adjacent regions;

the implementation process comprises the following steps:

step 1, preparing a hair expansion liquid: selecting a microbial agent and molasses for mixed culture, wherein the microbial agent and molasses are mixed and cultured according to the mass ratio (0.5-1.5): (3-17) performing mixed culture and hair expansion in proportion, keeping the culture temperature at 25-27 ℃, keeping the pH value of a culture system at 4-5, and performing stirred culture in a fermentation tank for 7 days to form hair expansion liquid;

step 2, preparing a mixed solution:

step 3, spraying a mixed solution:

step 4, laminating: welding the HDPE film by a hot wedge welding method to form a covering film and an air passage; covering the cover film and the air channel on the surface of the garbage in the step 3-2, and pressing the edge of the cover film by a heavy object;

step 5, air extraction: the buried gas collecting pipe under the membrane is arranged, the membrane is perforated, an air exhaust pipeline assembly is arranged at the hole, the buried gas collecting pipe under the membrane is communicated with the air exhaust pipeline assembly on the membrane to exhaust the generated buried gas, a negative pressure monitoring instrument and a methane gas and carbon dioxide gas online monitoring instrument are arranged on the air exhaust pipeline, the negative pressure of each gas generating unit is adjusted in real time, and the methane gas with the required purity is rapidly collected.

The implementation scheme is as follows: the treatment processes in examples 1-13 and comparative examples 1-7 are respectively selected for treating 21 experimental areas, the mixed liquor A and the mixed liquor B in the examples are replaced by the same volume of purified water in the rest areas, the purified water is respectively sprayed on the surface of the garbage in the morning and the evening to serve as blank control areas, and relevant gas detection is carried out in the experimental areas and the blank control areas.

The specific implementation process is as follows:

example 1

The embodiment discloses a process for deodorizing household garbage, improving methane yield and accelerating garbage degradation, which comprises the following steps:

step 1, preparing a hair expansion liquid: adding 2.86kg of microbial agent and 17.14kg of molasses into a fermentation tank at room temperature of 25 ℃, performing mixed culture in an aerobic environment for 7 days, stirring once every day, and keeping the pH value of a culture system at 4.0 to obtain a hair expanding solution; wherein the microbial agent is selected from the microbial agent prepared in the preparation example 1, the molasses is selected from cane molasses, and the mass ratio of the microbial agent to the molasses is 0.5: 3;

step 2, preparing a mixed solution:

step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to the volume ratio of 0.5:3, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use;

step 2-2, mixing 10kg of hair expansion liquid, ultrafiltration water and glucose according to the volume ratio of 0.5: 7: 0.2, adding the mixture into a stirring pot, and stirring for 7min at the normal temperature at the speed of 50r/min to obtain a mixed solution B for later use;

step 3, spraying a mixed solution:

step 3-1, six morning hours, taking 7.5kg of the mixed liquor A prepared in the step 2-1, uniformly spraying the mixed liquor A to the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor A to the garbage is 1.5: 1000, parts by weight;

step 3-2, at 5 pm, taking 7.5kg of the mixed liquor B prepared in the step 2-2, uniformly spraying the mixed liquor B on the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor B to the garbage is 1.5: 1000, parts by weight;

step 4, laminating: 2 smooth HDPE films with a layer thickness of 1.0mm were welded by hot wedge welding: two layers of geomembranes respectively pass through the upper part and the lower part of the hot wedge body to melt the surface, and then are tightly pressed and connected together by two pressure wheels to form a covering film and an air passage; covering the surface of the garbage heap body sprayed with the mixed liquid B in the step 3-2 with a covering film and an air passage, and pressing the edge of the covering film by a heavy object;

step 5, air extraction: a buried gas collecting pipe is arranged under the covering film, and a plurality of through holes are formed in the side wall of the buried gas collecting pipe at equal intervals along the length direction of the pipeline; the method is characterized in that holes are formed in a covering film, branch-dispersed air exhaust pipeline assemblies are installed at the holes, a landfill gas collecting pipe under the film penetrates through the holes of the covering film and is communicated with the air exhaust pipeline assemblies on the film to extract generated landfill gas, negative pressure monitoring and methane gas and carbon dioxide gas online monitoring instruments are arranged on the air exhaust pipelines, the negative pressure of each gas generation unit is adjusted in real time, and the methane gas with required purity is rapidly collected.

Example 2

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 1 in that:

step 1, culturing 1.62kg of microbial inoculum and 18.83kg of molasses for 7 days at the room temperature of 27 ℃, stirring once a day, and keeping the pH value of a culture system at 5.0 to obtain a hair extension liquid; wherein the microbial agent is prepared in the preparation example 2, and the mass ratio of the microbial agent to the molasses is 1.5: 17;

step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to the volume ratio of 1.5: 7, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use;

step 2-2, mixing 10kg of hair expansion liquid, ultrafiltration water and glucose according to the volume ratio of 1.5: 15: 0.5, adding the mixture into a stirring pot, and stirring for 7min at the normal temperature at the speed of 50r/min to obtain a mixed solution B for later use;

and 4, welding 2 smooth HDPE films with the thickness of 1.5mm by a hot wedge welding method.

Example 3

step 1, culturing 2.85kg of microbial inoculum and 17.15kg of molasses for 7 days at the room temperature of 26 ℃, stirring once a day, and keeping the pH value of a culture system at 4.5 to obtain a hair extension liquid; wherein the microbial agent is prepared in the preparation example 3, and the mass ratio of the microbial agent to the molasses is 0.5: 3;

Example 4

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 3 in that: step 1, 3.33kg of microbial agent and 16.67kg of molasses are mixed and cultured for 7 days to obtain a hair expanding solution, wherein the mass ratio of the microbial agent to the molasses is 1: 5.

Example 5

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 3 in that: step 1, mixing 1.25kg of microbial agent and 18.75kg of molasses and culturing for 7 days to obtain a hair expanding solution, wherein the mass ratio of the microbial agent to the molasses is 1: 15.

Example 6

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 3 in that: step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to a volume ratio of 1: 3, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use.

Example 7

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 3 in that: step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to a volume ratio of 1:5, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use.

Example 8

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 1 in that: step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1: 8: 0.3, adding the mixture into a stirring pot, and stirring at the normal temperature at the speed of 50r/min for 7min to obtain a mixed solution B for later use.

Example 9

The embodiment discloses a process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation, and the embodiment is different from the embodiment 1 in that: step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1: 10: 0.3, adding the mixture into a stirring pot, and stirring at the normal temperature at the speed of 50r/min for 7min to obtain a mixed solution B for later use.

Example 10

step 1, mixing 3.33kg of microbial agent and 16.67kg of molasses and culturing for 7 days to obtain a hair expanding liquid, wherein the mass ratio of the microbial agent to the molasses is 1: 5;

step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to a volume ratio of 1: 3, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use;

step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1: 8: 0.3, adding the mixture into a stirring pot, and stirring at the normal temperature at the speed of 50r/min for 7min to obtain a mixed solution B for later use.

Example 11

step 1, mixing 1.25kg of microbial agent and 18.75kg of molasses and culturing for 7 days to obtain a hair extension solution, wherein the microbial agent is prepared in preparation example 2, and the mass ratio of the microbial agent to the molasses is 1: 15;

Example 12

The embodiment discloses a process for deodorizing household garbage, improving methane yield and accelerating garbage degradation, and the difference between the embodiment and the embodiment 1 is as follows:

step 1, mixing 1.82kg of microbial agent and 18.18kg of molasses and culturing for 7 days to obtain a hair extension liquid, wherein the microbial agent is prepared in preparation example 3, and the mass ratio of the microbial agent to the molasses is 1: 10;

step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to a volume ratio of 1: 4, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use;

step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1: 9: 0.3, adding the mixture into a stirring pot, and stirring at the normal temperature at the speed of 50r/min for 7min to obtain a mixed solution B for later use.

Example 13

step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1: 9: 0.3, adding the mixture into a stirring pot, and stirring for 7min at the normal temperature at the speed of 50r/min to obtain a mixed solution B for later use;

step 4, air extraction: the landfill gas collecting pipe comprises a landfill pipe arranged deep in the garbage and collecting pipes arranged transversely and longitudinally, and the transverse collecting pipe extends to cover a gas generating unit with a certain area to realize the landfill collection of a required layer; the longitudinal collecting pipe is communicated with the landfill pipe and is used for leading out deep landfill gas; and gravels with different grades are paved on the outer side of the landfill gas collecting pipe.

Comparative example

Comparative example 1

Compared with the embodiment 1, the process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation has the following differences:

step 1, mixing 10kg of microbial agent and 10kg of molasses and culturing for 7 days to obtain a hair extension liquid, wherein the microbial agent is prepared in preparation example 4, and the mass ratio of the microbial agent to the molasses is 1: 1.

Comparative example 2

Compared with the embodiment 1, the process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation only has the following differences: step 1, selecting the microbial agent prepared in preparation example 5 as the microbial agent;

step 2-1, mixing 10kg of hair expansion liquid and normal-temperature ultrafiltration water according to a volume ratio of 1:1, mixing and adding the mixture into a stirring pot, and stirring the mixture for 5min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use;

step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1:1:1, adding the mixture into a stirring pot, and stirring at the normal temperature at the speed of 50r/min for 7min to obtain a mixed solution B for later use.

Comparative example 3

Compared with the embodiment 1, the process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation only has the following differences: step 1, mixing 10kg of microbial agent and 10kg of molasses and culturing for 7 days to obtain a hair expansion liquid, wherein the mass ratio of the microbial agent to the molasses is 1:1

Comparative example 4

Compared with the embodiment 1, the process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation only has the following differences: step 3-1, six morning hours, taking 7.5kg of the mixed liquor B prepared in the step 2-2, uniformly spraying the mixed liquor B on the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor B to the garbage is 1.5: 1000, parts by weight;

step 3-2, at 5 pm, taking 7.5kg of the mixed liquor A prepared in the step 2-1, uniformly spraying the mixed liquor A to the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor A to the garbage is 1.5: 1000.

comparative example 5

Compared with the embodiment 1, the process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation only has the following differences: step 3-1, six morning hours, taking 7.5kg of the mixed liquor A prepared in the step 2-1, uniformly spraying the mixed liquor A to the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor A to the garbage is 1.5: 1000, parts by weight;

step 3-2, at 5 pm, taking 7.5kg of the mixed liquid A prepared in the step 2-1, uniformly spraying the mixed liquid A onto the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquid A to the garbage is 1.5: 1000.

comparative example 6

step 3-2, at 5 pm, taking 7.5kg of the mixed liquor B prepared in the step 2-2, uniformly spraying the mixed liquor B on the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor B to the garbage is 1.5: 1000.

comparative example 7

Compared with the embodiment 1, the process for deodorizing the household garbage, improving the methane yield and accelerating the garbage degradation only has the following differences: step 1, mixing 10kg of microbial agent and 10kg of molasses and culturing for 7 days to obtain a hair expansion liquid, wherein the microbial agent is prepared in preparation example 4, and the mass ratio of the microbial agent to the molasses is 1: 1;

step 2-2, mixing 10kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1:1:1, mixing and adding the mixture into a stirring pot, and stirring for 7min at the normal temperature at the speed of 50r/min to obtain a mixed solution B for later use;

step 3-1, six morning hours, taking 7.5kg of the mixed liquor B prepared in the step 2-2, uniformly spraying the mixed liquor B on the surface of 5 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor B to the garbage is 1.5: 1000, parts by weight;

application example

The application example selects a certain refuse dump for treatment, and the refuse landfill comprises the following steps: the total storage capacity reaches 3300 ten thousand m 3; the kitchen waste, the plastic and the paper have larger specific weight, the three types account for 85-90 percent, the wood and bamboo type, the lime soil type, the brick and tile ceramic type, the glass type, the metal type and the like have small content, and the total content of the components is 10-15 percent. 5000 tons of garbage enter the field every day.

The treatment process comprises the following steps:

step 1, culturing 285.71kg of microbial inoculum and 1714.29kg of molasses for 7 days at room temperature of 25 ℃, stirring once a day, and keeping the pH value of a culture system at 4 to obtain a hair extension liquid; wherein the microbial agent is prepared by the microbial agent prepared in the preparation example 3;

step 2, preparing a mixed solution:

step 2-1, mixing 1000kg of hair expansion liquid and normal-temperature ultrafiltration water according to a volume ratio of 1: 4, mixing and adding the mixture into a stirring pot, and stirring the mixture for 30min at the normal temperature at the speed of 50r/min to obtain a mixed solution A for later use;

step 2-2, mixing 1000kg of hair expansion liquid, normal-temperature ultrafiltration water and glucose according to a volume ratio of 1: 9: 0.3, adding the mixture into a stirring pot, and stirring for 45min at the normal temperature at the speed of 50r/min to obtain a mixed solution B for later use;

step 3, spraying a mixed solution:

step 3-1, six am, taking 3.75 tons of the mixed liquor A prepared in the step 2-1, uniformly spraying the mixed liquor A to the surface of 2500 tons of garbage in an experimental area, wherein the mass ratio of the mixed liquor A to the garbage is 1.5: 1000, parts by weight;

3-2, at 5 pm, taking 3.75 tons of the mixed liquor B prepared in the step 2-2, uniformly spraying the mixed liquor B onto the surface of 2500 tons of garbage in the experimental area, wherein the mass ratio of the mixed liquor B to the garbage is 1.5: 1000, parts by weight;

step 4, laminating: 2 smooth HDPE films with a layer thickness of 1.0mm were welded by hot wedge welding: two layers of geomembranes respectively pass through the upper part and the lower part of the thermal wedge body to melt the surface, and then are tightly pressed and connected together by two pressure wheels to form a covering film and an air passage; covering the surface of the garbage heap body sprayed with the mixed liquid B in the step 3-2 with a covering film and an air passage, and pressing the edge of the covering film by a heavy object;

step 5, air extraction: a landfill gas collecting pipe is arranged under the covering film, and a plurality of through holes are arranged on the side wall of the landfill gas collecting pipe at equal intervals along the length direction of the pipeline; the landfill gas collecting pipe comprises a landfill pipe arranged deep in the garbage and collecting pipes arranged transversely and longitudinally, and the transverse collecting pipe extends to cover a gas generating unit with a certain area to realize the landfill collection of a required layer; the longitudinal collecting pipe is communicated with the landfill pipe and is used for leading out deep landfill gas; broken stones with different gradations are laid on the outer side of the landfill gas collecting pipe and used for guiding, discharging and filtering landfill gas; the method is characterized in that holes are formed in a covering film, branch-dispersed air exhaust pipeline assemblies are installed at the holes, a landfill gas collecting pipe under the film penetrates through the holes of the covering film and is communicated with the air exhaust pipeline assemblies on the film to extract generated landfill gas, negative pressure monitoring and methane gas and carbon dioxide gas online monitoring instruments are arranged on the air exhaust pipelines, the negative pressure of each gas generation unit is adjusted in real time, and the methane gas with required purity is rapidly collected.

Performance test experiment

1. Deodorization detection experiment: according to landfill gas monitoring items and analysis methods in GBT18772-2008 & technical requirements for environmental monitoring of sanitary landfill sites for household garbage, an experimental area treated by the treatment processes of examples 1-13 and comparative examples 1-7 and a blank control area treated by clear water are subjected to content detection of hydrogen sulfide and ammonia before and after treatment, data are recorded, and removal rates of the hydrogen sulfide and the ammonia are calculated, wherein the data conditions of the removal rates are detailed in Table 2.

2. Methane production rate and gas production rate detection experiment: the gas production rate and the methane yield of the experimental area treated by the treatment processes of examples 1 to 13 and comparative examples 1 to 7 and the blank control area treated by clear water were measured by an online monitoring instrument for methane gas and carbon dioxide gas, and the data conditions are detailed in table 2.

TABLE 2

According to the detection data of the embodiments 1 and 2 in the table 2, the removal rate of hydrogen sulfide and the removal rate of ammonia of the domestic garbage treated by the treatment processes of the embodiments 1 and 2 reach over 86 percent, and the overall deodorization rate is better; compared with a blank control, the methane yield of the household garbage treated in the examples 1 and 2 is improved by about 5 times, the methane production rate is improved by more than 5 times, and the garbage reduction is up to more than 88%; the treatment process provided by the application has obvious progress in aspects of garbage deodorization, methane gas production rate acceleration, methane gas production rate increase, garbage degradation acceleration and the like.

According to comparison of detection data of examples 1 and 2 and example 3 in table 2, the microbial agent prepared in preparation example 3 is selected in example 3, the mass ratio of bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes in the microbial agent prepared in preparation example 3 is 10:1:1:1:1:1, and compared with the process of examples 1 and 2, the process for treating domestic garbage in example 3 improves aspects of garbage deodorization, methane production rate acceleration, methane production rate increase, garbage degradation acceleration and the like.

The comparison of the detection data of examples 1 to 3 and comparative examples 1 and 2 in Table 2 shows that the microbial agent prepared in preparation example 4 was selected in comparative example 1 and the microbial agent prepared in preparation example 5 was selected in comparative example 2; compared with the examples 1-3, the domestic garbage treated by the treatment processes of the comparative examples 1 and 2 has a certain degree of reduction in hydrogen sulfide removal rate, ammonia removal rate, methane gas production rate, gas production rate and garbage reduction; the change of the proportion of each strain in the microbial agent can influence the deodorization, the degradation and the methane output in the garbage treatment to a certain degree.

The inventor analyzes that: adopt the microbial inoculum who is made by bacillus, lactic acid bacteria, thermophilic streptococcus, rhodotorula, photosynthetic bacteria and actinomycetes according to the mixture of specific proportion in this application, maintain between each microorganism in the microbial inoculum at certain proportion scope, help mutually supporting among the microbial fermentation process, give play to better synergistic effect, maintain the balanced state among the fermentation process for the rate of rubbish degradation promotes, and the gas production rate of methane promote, reach deodorant antibacterial effect.

According to comparison of the detection data of the example 1 and the examples 4 and 5 in the table 2, the microbial inoculum and the molasses in the examples 4 and 5 are mixed according to the mass ratio of 1 (5-15), and compared with the example 1, the domestic garbage treated by the treatment process of the examples 4 and 5 is improved in aspects of garbage deodorization, methane gas production rate acceleration, methane gas production rate increase, garbage degradation acceleration and the like.

The comparison of the test data of examples 1 to 5 and comparative examples 1 and 3 in Table 2 shows that the microbial agent and molasses in comparative examples 1 and 3 are mixed at a mass ratio of 1: 1; the mass ratio of the microbial agent to the molasses in comparative examples 1 and 3 is out of the range defined in the application; compared with the examples 1-5, the domestic garbage treated by the treatment processes of the comparative examples 1 and 3 has the advantages that the hydrogen sulfide removal rate, the ammonia gas removal rate, the methane gas production rate, the gas production rate and the garbage decrement are obviously reduced; the change of the proportion of the microbial agent and the molasses has important influence on deodorization, degradation and methane output in the garbage treatment.

The inventor analyzes that: according to the application, the microbial agent and the molasses are mixed and prepared according to a specific proportion range and then are subjected to expansion culture, so that the stability of thalli in the microbial agent is improved, the thalli keep good activity before degrading garbage, the degradation rate of mixed liquor on the garbage is improved, and the gas production rate of methane are improved; the proportion between the two exceeds the range defined by the application, and the two can generate a certain degree of inhibition effect on the contrary, so that the degradation of the microorganism to the garbage is hindered, and the garbage treatment efficiency and quality are further reduced.

According to the comparison of the test data of example 3, examples 6 and 7 and comparative examples 2 and 3 in table 2, the volume ratio of the hair extension liquid and the ultrafiltration water in examples 6 and 7 is 1: (3-5), and mixing the hair extension liquid, the ultrafiltration water and the glucose in the comparative examples 2 and 3 according to a volume ratio of 1:1:1, mixing; compared with the embodiment 3, the household garbage treated by the treatment processes of the embodiments 6 and 7 is improved in aspects of garbage deodorization, methane gas production rate acceleration, methane gas production rate increase, garbage degradation acceleration and the like; the domestic garbage treated by the treatment processes of the comparative examples 2 and 3 has obvious reduction in hydrogen sulfide removal rate, ammonia removal rate, methane gas production rate, gas production rate and garbage reduction.

The inventor analyzes that: according to the application, the hair extension liquid and the ultrafiltration water are mixed and prepared according to a specific proportion, so that the mixed liquid A has a proper concentration, and therefore, the biological liquid has good biological liquid viscosity, and the efficiency of the microorganisms in the mixed liquid A on odor conversion and decomposition is improved, the garbage degradation rate is improved, and the yield of methane gas is increased; when the proportion of the two substances breaks the limited range, the concentration of the mixed liquid A cannot meet the requirement of garbage degradation in the daytime, and the garbage treatment effect is further influenced.

Based on the comparison of the test data of examples 1, 8 and 9 and comparative examples 2 and 3 in table 2, the volume ratio of the hair extension liquid, the ultrafiltration water and the glucose in examples 8 and 9 is 1: (8-10): 0.3, and the hair extension liquid, the ultrafiltration water and the glucose in the volume ratio of 1:1:1, mixing; compared with the embodiment 1, the household garbage treated by the treatment processes of the embodiments 8 and 9 is improved in aspects of garbage deodorization, methane gas production rate acceleration, methane gas production rate increase, garbage degradation acceleration and the like; the domestic garbage treated by the treatment processes of the comparative examples 2 and 3 has obvious reduction in hydrogen sulfide removal rate, ammonia removal rate, methane gas production rate, gas production rate and garbage reduction.

The inventor analyzes that: according to the application, the hair expanding liquid, the ultrafiltration water and the glucose are mixed and prepared according to a specific proportion, so that the mixed liquid B has a proper concentration, the permeation and diffusion of the mixed liquid B in garbage are facilitated, the garbage degradation of the mixed liquid B is further promoted, and the methane yield is increased; when the ratio of the three components is broken through the limited range, the glucose can generate a certain inhibition effect on the microorganisms in the hair restorer, so that the physiological activity of the microorganisms in the fermentation process is inhibited, and the output of methane is directly influenced; the mixed liquor can not fully permeate, so that the mixed liquor B can influence the garbage degradation.

According to comparison of the detection data of the embodiment 1 and the embodiments 10-12 in the table 2, the proportion of the microbial agent to the molasses in the embodiments 10-12 and the component proportion of the mixed liquid A and the mixed liquid B are more accurately limited, and compared with the embodiment 1, the domestic garbage treated by the treatment process of the embodiments 10-12 is remarkably improved in aspects of garbage deodorization, methane gas production rate acceleration, methane gas production rate increase, garbage degradation acceleration and the like.

According to comparison of detection data of example 1 and example 13 in table 2, the component distribution ratios of the mixed liquor a and the mixed liquor B in example 13 are more accurately defined, the landfill gas collecting pipe under the membrane is differently arranged in the deep, transverse and longitudinal directions, and crushed stones with different grades are arranged outside the landfill gas collecting pipe; by adopting the treatment method of the embodiment 13, the mixed solution can exert a better garbage treatment effect, the landfill gas collecting pipe can collect the landfill gas produced by the garbage under the membrane to the maximum extent, the leakage of the gas such as methane and the like in the garbage landfill site can be reduced, and the best technical effect can be achieved by adopting the treatment process of the embodiment 13.

Comparing the detection data of the example 1 and the comparative examples 4-6 in the table 2, wherein the comparative example 4 adopts a spraying mode of spraying the mixed solution B in the morning and spraying the mixed solution A in the evening; in comparative example 5, mixed solution A was sprayed both morning and evening; in comparative example 6, mixed solution B was sprayed both morning and evening; the effect of treating the waste with the treatment processes of comparative examples 4-6 was significantly reduced compared to the effect of treating the waste with the process of example 1. The explanation shows that spraying the mixed liquid A in the morning and spraying the mixed liquid B in the evening in the garbage treatment process is an important process treatment means, and has great influence on the treatment effect.

In the comparative example 7, the proportion of each thallus in the microbial agent, the proportion of the expanding liquid, the mixed liquid A and the mixed liquid B are beyond the proportion range limited by the application, and the spraying mode of spraying the mixed liquid B in the morning and spraying the mixed liquid A in the evening is also adopted; the result tests of the garbage degradation rate, the deodorization effect, the methane gas production rate and the gas production rate are not ideal when the garbage is treated by adopting the treatment process of the comparative example 7, and further the technical scheme of the application shows that the combination ratio of each process step and each component is an important technical means which can solve the technical problem and achieve the technical effect of the application.

According to the performance data of the application examples in the table 2, the treatment process can be used for treating large-scale landfill garbage, so that the high deodorization rate, the methane gas production rate and the gas production rate are greatly improved, the garbage degradation reaches over 90 percent, the good economic value is embodied, and the resource recycling and the environmental protection engineering are facilitated.

The treatment process has the advantages of deodorizing the garbage, accelerating the methane gas production rate, increasing the methane gas production rate, accelerating the garbage degradation and the like, is simple to operate, safe and efficient, is convenient to popularize and use on a large scale, and has a good application prospect.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A process for deodorizing domestic garbage, improving methane yield and accelerating garbage degradation is characterized by comprising the following steps: comprises the following processing steps;

step 1, preparing a hair expanding liquid: selecting a microbial agent and molasses for mixed culture, wherein the microbial agent and molasses are mixed and cultured according to the mass ratio (0.5-1.5): (3-17) performing mixed culture and hair expansion at the culture temperature of 25-27 ℃, keeping the pH of a culture system at 4-5, and culturing for 7 days to form hair expansion liquid; the microbial agent is prepared from bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes according to the mass ratio of (8-12): (0.8-1.2): 1: (0.6-1): 1: (0.5-1.5) mixing;

step 2, preparing a mixed solution:

step 2-2, mixing the rest of the hair extension liquid, the ultrafiltration water and the glucose according to the volume ratio (0.5-1.5): (7-15): (0.2-0.5) mixing evenly to form a mixed solution B;

step 3, spraying a mixed solution:

2. The process of claim 1 for deodorizing domestic waste, increasing methane production, and accelerating waste degradation, wherein: in the step 1, the mass ratio of the microbial agent to the molasses is 1: (5-15) the mixed culture and hair expansion.

3. The process of claim 1 or 2 for deodorizing domestic waste, increasing methane production, and accelerating waste degradation, wherein: in the step 2-1, the volume ratio of the hair expanding liquid to the ultrafiltration water is 1: (3-5) mixing uniformly to form a mixed solution A.

4. The process of claim 1 or 2 for deodorizing domestic waste, increasing methane production, and accelerating waste degradation, wherein: in the step 2-2, the hair expanding liquid, the ultrafiltration water and the glucose are mixed according to the volume ratio of 1: (8-10): 0.3, and mixing uniformly to form a mixed solution B.

5. The process of claim 3 for deodorizing domestic waste, increasing methane production, and accelerating waste degradation, wherein: in the step 2-2, the hair expanding liquid, the ultrafiltration water and the glucose are mixed according to the volume ratio of 1: (8-10): 0.3, and mixing uniformly to form a mixed solution B.

6. The process of claim 1 for deodorizing domestic waste, increasing methane production, and accelerating waste degradation, wherein: the microbial agent is prepared from bacillus, lactic acid bacteria, streptococcus thermophilus, rhodotorula, photosynthetic bacteria and actinomycetes according to a mass ratio of 10:1:1:1:1:1, mixing to obtain the product.

7. The process for deodorizing domestic garbage, increasing the yield of methane and accelerating the degradation of garbage according to claim 1, wherein the process comprises the following steps: the molasses in the step 1 is cane molasses.

8. The process for deodorizing domestic garbage, increasing the yield of methane and accelerating the degradation of garbage according to claim 1, wherein the process comprises the following steps: the pH of the culture system is maintained at 4 in step 1.

9. The process for deodorizing domestic garbage, increasing the yield of methane and accelerating the degradation of garbage according to claim 1, wherein the process comprises the following steps: in the step 5, the landfill gas collecting pipes comprise landfill pipes arranged deep in the garbage and collecting pipes arranged transversely and longitudinally, and the transverse collecting pipes extend to cover gas generating units with a certain area; the longitudinal collecting pipe is communicated with the landfill pipe; and the outer side of the landfill gas collecting pipe is also provided with gravels with different grades.