CN112553053A - Device and method for co-producing gas fertilizer in integrated methane tank - Google Patents

Device and method for co-producing gas fertilizer in integrated methane tank Download PDF

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Publication number
CN112553053A
CN112553053A CN202011541878.8A CN202011541878A CN112553053A CN 112553053 A CN112553053 A CN 112553053A CN 202011541878 A CN202011541878 A CN 202011541878A CN 112553053 A CN112553053 A CN 112553053A
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tank
biogas
fertilizer
gas
tank body
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靳文尧
徐晓晨
杨凤林
陈捷
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Dalian Haichuan Bochuang Environmental Protection Technology Co ltd
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Dalian Haichuan Bochuang Environmental Protection Technology Co ltd
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M21/00—Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F11/00—Other organic fertilisers
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
    • C05F17/90—Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
    • C05F3/00—Fertilisers from human or animal excrements, e.g. manure
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
    • C05G5/00—Fertilisers characterised by their form
    • C05G5/20—Liquid fertilisers
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00—Constructional details, e.g. recesses, hinges
    • C12M23/36—Means for collection or storage of gas; Gas holders
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00—Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02—Stirrer or mobile mixing elements
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12—Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18—Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/22—Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
    • C12M47/18—Gas cleaning, e.g. scrubbers; Separation of different gases
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023—Methane
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse

Abstract

The invention discloses a device and a method for co-producing gas fertilizer of an integrated methane tank, wherein the method comprises the following steps: adding 1-20% of anaerobic digestion inoculum into the biogas tank body through the feed inlet, adding solid organic waste and tempering water to control the concentration range of dry matters in the tank body to be 3-15%; starting a heating coil and a stirring motor, and controlling the fermentation process conditions as follows: the temperature is 30-43 ℃, the pH is 6-8.5, the ammonia nitrogen concentration is less than or equal to 5000mg/L, the refueling period is 10-50 days, and the volume fraction of refueling is 10-50%; after the treatment is finished, a liquid outlet pump is used for pumping out the solid-liquid mixture and using the solid-liquid mixture as a liquid fertilizer, and the using method comprises the following steps: the application amount per mu is less than 4 tons/time, and the application period is more than 10 days; the generated biogas sequentially enters a dehydration tank and a desulfurization tank; the marsh gas finally enters a marsh gas air bag for storage and use by users. The method and the device can be used in the north and the south of China at all seasons, fully considers the problems of uneven levels of rural operators and the like, and realizes 'fool' operation.

Description

Device and method for co-producing gas fertilizer in integrated methane tank
Technical Field
The invention belongs to the field of environmental protection rural solid waste treatment, and particularly relates to a device and a method for integrated biogas digester gas-fertilizer co-production.
Background
The anaerobic digestion technology is a process for producing biogas and solid/liquid organic fertilizer by decomposing organic substances by using microorganisms under anaerobic conditions. The method can treat the excrement simultaneously, has easily controlled process conditions, convenient equipment operation and maintenance, is environment-friendly, and produces green sustainable energy, thereby being widely concerned. The traditional cognition for methane fermentation is retained in an underground household methane tank or a large and medium methane tank, namely, a brick concrete/concrete structure tank body is adopted to ferment materials to produce methane, so that the problems of low methane production efficiency in winter, easy crusting, unstable operation and the like exist, and the traditional cognition is basically eliminated at present.
In recent years, the country has been vigorously spreading a regional solid organic waste treatment center or a vein industrial park in counties as a unit, and taking planting and breeding combination, farming and pasturing circulation, nearby consumption and comprehensive utilization as main lines, taking livestock and poultry breeding excrement, breeding sewage, toilet septic tank excrement and the like as main treatment objects, wherein the treatment capacity of a single project is about 300-1000 tons/day, and the investment scale is about 0.6 to 1.5 billion yuan RMB. For certain villages and towns with smaller culture scale or laggard economy but urgent organic solid waste treatment requirements, the problem of large investment scale and large land requirement area exists in the centralized waste disposal, and professional construction and operation teams are needed for projects. How to combine the large-scale biogas engineering with the traditional household or large and medium-sized biogas digester to develop an integrated biogas digester suitable for small-scale cultivation plants, villages or greenhouses is worth researching and discussing.
Disclosure of Invention
The application aims to provide a device and a method for co-producing gas and fertilizer in an integrated methane tank, which solve the problems of low efficiency and high investment and large occupied area of large-scale methane tank engineering in traditional household and large-medium methane tanks and reduce agricultural non-point source pollution.
In order to achieve the purpose, the technical scheme of the application is as follows: the device for the integrated gas-fertilizer co-production of the biogas digester comprises a biogas tank body, wherein one side of the biogas tank body is connected with a liquid level meter insertion pipe, the top of the other side of the biogas tank body is provided with a stirring motor, a stirring paddle connected with the stirring motor extends into the lower part of the biogas tank body, a biogas outlet at the top of the biogas tank body is connected with an inlet of a dewatering tank, an outlet of the dewatering tank is connected with an inlet of a desulfurizing tank, an outlet of the desulfurizing tank is connected to a biogas air bag, and a user; and a feeding hole is formed in the top of one side of the methane box body.
Furthermore, a liquid outlet pump is arranged on a bottom plate of the methane tank body, the liquid outlet pump is connected to a liquid outlet at the top of the methane tank body through a pipeline, and a water replenishing port is arranged beside the liquid outlet.
Furthermore, the volume range of the biogas tank body is 1-100m3。
Furthermore, a heating coil is wound inside or outside the methane tank body, and electricity or hot water is adopted to heat the methane tank body.
Further, a heat insulation layer is arranged outside the methane tank body, and the thickness of the heat insulation layer is 5-20 cm.
Furthermore, an observation window is arranged at the lower part of the dehydration tank, a water outlet is arranged at the bottom of the dehydration tank, the observation window is respectively arranged at the upper part and the lower part of the desulfurization tank, and the water outlet is arranged at the bottom of the desulfurization tank.
Furthermore, the power of the stirring motor is selected within the range of 45-150W/m3Intermittent stirring or continuous stirring is adopted.
The application also provides a method for the gas-fertilizer co-production of the integrated methane tank matched with the device, which comprises the following steps: firstly, 1 to 20 percent of anaerobic digestion inoculum is added into a biogas tank body through a feed inlet, and then solid organic waste and conditioned water are added to control the concentration range of dry matters in the tank body to be within3% -15%; starting a heating coil and a stirring motor, and controlling the fermentation process conditions as follows: the temperature is 30-43 ℃, the pH is 6-8.5, the ammonia nitrogen concentration is less than or equal to 5000mg/L, the refueling period is 10-50 days, and the volume fraction of refueling is 10-50%; after the treatment is finished, a liquid outlet pump is used for pumping out the solid-liquid mixture and using the solid-liquid mixture as a liquid fertilizer, and the using method comprises the following steps: the application amount per mu is less than 4 tons/time, and the application period is more than 10 days; the generated biogas enters a dehydration tank and a desulfurization tank in sequence, and the concentration of hydrogen sulfide at the outlet of the desulfurization tank is less than 20mg/m3(ii) a The marsh gas finally enters a marsh gas air bag for storage and use by users, and the volume of the marsh gas air bag is 1.5 to 3 times of that of the marsh gas box body.
The inoculum selects rumen functional bacteria or anaerobic digestion sludge according to different degradation objects.
The modified water comprises non-toxic non-industrial drainage such as domestic sewage, breeding wastewater, food processing wastewater and the like.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects: the method has wide treatment range, can treat various common solid organic wastes in village range, such as biomass straws, kitchen wastes, septic tanks in toilets, livestock and poultry breeding wastes, waste vegetables and the like, particularly can add yellow straws with dry weight of more than 50 percent, has comprehensive degradation efficiency of more than 75 percent, and is thorough in reduction and harmlessness. The retention time can be shortened from 40-60 days to 15-20 days by adopting the rumen functional microbial inoculum, the solid content in fermentation is 10-12%, and the gas production can reach 350m3More than t.TS, high efficiency of producing the biogas. Besides containing major elements such as N/P/K and the like, medium elements such as Ca, Mg and the like, and trace elements such as B, Mo, Zn and the like, the fermentation residual liquid also contains a large amount of plant active components such as amino acid, B vitamins, auxin and the like, so that the application amount of the fertilizer can be effectively reduced, and the product quality is improved. The method and the device can be used in the north and the south of China at all seasons, fully considers the problems of uneven levels of rural operators and the like, realizes 'fool' operation, has small occupied area, strong applicability and high integration level, can realize gas and fertilizer co-production, and reduces agricultural non-point source pollution.
Drawings
FIG. 1 is a schematic structural diagram of a device and a method for co-producing gas and fertilizer in an integrated methane tank;
the sequence numbers in the figures illustrate: 1. the device comprises a liquid level meter insertion pipe, 2 feed inlets, 3 heating coils, 4 internal access holes, 5 water replenishing ports, 6 liquid outlets, 7 biogas outlets, 8 stirring motors, 9 external access holes, 10 liquid outlet pumps, 11 dehydration tanks, 12 desulfurization tanks, 13 water outlets, 14 biogas air bags, 15 user gas taking ports and 16 observation windows.
Detailed Description
The invention is described in further detail below with reference to the following figures and specific examples: the present application is further described by taking this as an example.
Example 1
The device and the method for integrated biogas digester gas-fertilizer co-production comprise a biogas tank body, wherein one side of the biogas tank body is connected with a liquid level meter insertion pipe, the top of the other side of the biogas tank body is provided with a stirring motor, a stirring paddle connected with the stirring motor extends into the lower part of the biogas tank body, a biogas outlet at the top of the biogas tank body is connected with an inlet of a dewatering tank, an outlet of the dewatering tank is connected with an inlet of a desulfurization tank, an outlet of the desulfurization tank is connected to a biogas air bag, and a user gas taking port is arranged on.
The bottom plate of the methane tank body is provided with a liquid outlet pump, the liquid outlet pump is connected to a liquid outlet at the top of the methane tank body through a pipeline, and a water replenishing port is arranged beside the liquid outlet.
The volume range of the biogas tank body is 1-100m3The heating coil is wound inside or outside the biogas tank body, electricity or hot water is adopted to heat the biogas tank body, and a heat insulation layer is arranged outside the biogas tank body and is 5-20cm thick.
The biogas tank is characterized in that an inner access hole and an outer access hole are formed in the top of the biogas tank body, the outer access hole is located beside the stirring motor, the inner access hole is used for maintaining the liquid outlet pump and the stirring paddle, and the outer access hole is used for maintaining the stirring motor.
Example 1
With an effective volume of 10m3An integral biogas tank body with a heat tracing band wound outside and a heat insulation layer of 15cm in thickness is arranged, and the motor power of the stirring device is 1.1 kw. Head gatingAfter 20% anaerobic digestion sludge is added into the box body through the feed hole, 3 kinds of solid organic wastes of chicken manure, toilet septic tank manure and corn straw are added as fermentation raw materials, domestic sewage is used as tempering water, and the concentration of dry matters in the box body is adjusted to be 8%. Starting the heating and stirring device, controlling the temperature in the box body to be 38 ℃, pH7.5 and the ammonia nitrogen concentration to be less than 3500mg/L, replacing 50 percent of fermentation liquor after reacting for 30 days, and adding the fermentation raw materials in proportion again. The generated biogas passes through a dehydration tank and a desulfurization tank in sequence, and the concentration of hydrogen sulfide in the biogas at the outlet of the desulfurization tank is lower than 15mg/m3Finally enter 15m3Temporarily storing the biogas air bag. And (4) furrow application is carried out on the discharged fermentation liquor 1 week before the bud eyes of the apple trees sprout according to the use amount of 2 tons per mu.
Example 2
With an effective volume of 50m3The internal part of the stirring device is connected with a heating coil and an integrated biogas tank body with the thickness of a heat-insulating layer of 10cm, and the power of a motor of the stirring device is 2.5 kw. Firstly, after 10% of rumen functional microbial inoculum is added into a box body through a feed port, 5 solid organic wastes of pig manure, toilet septic tank manure, kitchen waste, waste vegetables and rice straw are added as fermentation raw materials, urine and flushing water of a pig raising factory are used as tempering water, and the concentration of dry matters in the box body is adjusted to be 12%. Starting the heating and stirring device, controlling the temperature in the box body to be 35 ℃, pH7.0 and the ammonia nitrogen concentration to be less than 4500mg/L, replacing 30% of fermentation liquor after reacting for 15 days, and adding the fermentation raw materials in proportion again. The generated biogas passes through a dehydration tank and a desulfurization tank in sequence, and the concentration of hydrogen sulfide in the biogas at the outlet of the desulfurization tank is lower than 15mg/m3Finally, it enters 150m3Temporarily storing the biogas air bag. The discharged fermentation liquor is applied with water in the fruit expanding period of tomato planting according to the usage amount of 1 ton/mu.
The invention can provide green liquid organic fertilizer and clean energy while treating agricultural rural organic waste, and is beneficial to realizing the obvious improvement of rural human living environment.
The above description is only for the purpose of creating a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims (10)

1. The device for the integrated gas-fertilizer co-production of the methane tank is characterized by comprising a methane tank body, wherein one side of the methane tank body is connected with a liquid level meter insertion pipe, the top of the other side of the methane tank body is provided with a stirring motor, a stirring paddle connected with the stirring motor extends into the lower part of the methane tank body, a methane outlet at the top of the methane tank body is connected with an inlet of a dewatering tank, an outlet of the dewatering tank is connected with an inlet of a desulfurization tank, an outlet of the desulfurization tank is connected to a methane air bag, and a user gas; and a feeding hole is formed in the top of one side of the methane box body.
2. The integrated device for co-production of gas and fertilizer in a biogas digester as claimed in claim 1, wherein a liquid outlet pump is arranged on the bottom plate of the biogas digester, the liquid outlet pump is connected to a liquid outlet at the top of the biogas digester through a pipeline, and a water replenishing port is arranged beside the liquid outlet.
3. The integrated biogas digester gas-fertilizer co-production device according to claim 1, wherein the volume range of the biogas tank body is 1-100m3。
4. The integrated biogas digester gas fertilizer co-production device according to claim 1, wherein a heating coil is wound inside or outside the biogas tank body.
5. The integrated biogas digester gas-fertilizer co-production device according to claim 1, wherein the biogas tank body is externally provided with a heat insulation layer, and the thickness of the heat insulation layer is 5-20 cm.
6. The integrated device for co-production of gas and fertilizer in a biogas digester as claimed in claim 1, wherein the lower part of the dehydration tank is provided with an observation window, the bottom is provided with a water outlet, the upper part and the lower part of the desulfurization tank are respectively provided with an observation window, and the bottom is provided with a water outlet.
7. The integrated biogas digester gas-fertilizer co-production device according to claim 1, wherein the power selection range of the stirring motor is 45-150W/m3Intermittent stirring or continuous stirring is adopted.
8. An integrated biogas digester gas fertilizer co-production method is implemented based on any one of the devices of claims 1-7, and is characterized in that the method comprises the following steps: firstly, 1-20% of anaerobic digestion inoculum is added into a biogas tank body through a feed port, and then solid organic waste and conditioned water are added to control the concentration range of dry matters in the tank body to be 3-15%; starting a heating coil and a stirring motor, and controlling the fermentation process conditions as follows: the temperature is 30-43 ℃, the pH is 6-8.5, the ammonia nitrogen concentration is less than or equal to 5000mg/L, the refueling period is 10-50 days, and the volume fraction of refueling is 10-50%; after the treatment is finished, a liquid outlet pump is used for pumping out the solid-liquid mixture and using the solid-liquid mixture as a liquid fertilizer, and the using method comprises the following steps: the application amount per mu is less than 4 tons/time, and the application period is more than 10 days; the generated biogas enters a dehydration tank and a desulfurization tank in sequence, and the concentration of hydrogen sulfide at the outlet of the desulfurization tank is less than 20mg/m3(ii) a The marsh gas finally enters a marsh gas air bag for storage and use by users, and the volume of the marsh gas air bag is 1.5 to 3 times of that of the marsh gas box body.
9. The method for the integrated biogas digester gas-fertilizer co-production according to claim 8, wherein the inoculum is selected from rumen functional bacteria or anaerobic digestion sludge according to different degradation treatment objects.
10. The method for the gas-fertilizer co-production of the integrated biogas digester as claimed in claim 8, wherein the conditioned water comprises non-toxic non-industrial drainage such as domestic sewage, aquaculture wastewater, food processing wastewater and the like.
CN202011541878.8A 2020-12-23 2020-12-23 Device and method for co-producing gas fertilizer in integrated methane tank Pending CN112553053A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114292883A (en) * 2021-12-31 2022-04-08 大连大学 Process for producing biogas by anaerobic digestion of various agricultural solid organic wastes with different properties

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114292883A (en) * 2021-12-31 2022-04-08 大连大学 Process for producing biogas by anaerobic digestion of various agricultural solid organic wastes with different properties

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