CN111848311A - Method for preparing biological fertilizer from pig manure in pig farm - Google Patents

Method for preparing biological fertilizer from pig manure in pig farm Download PDF

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Publication number
CN111848311A
CN111848311A CN202010819659.5A CN202010819659A CN111848311A CN 111848311 A CN111848311 A CN 111848311A CN 202010819659 A CN202010819659 A CN 202010819659A CN 111848311 A CN111848311 A CN 111848311A
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pig
pig manure
manure
fertilizer
parts
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张宗彦
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Hunan Lanying Technology Co Ltd
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Hunan Lanying Technology Co Ltd
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    • 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
    • C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
    • C05G3/80—Soil conditioners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/84—Biological processes
    • 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
    • C02F11/004—Sludge detoxification
    • 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
    • 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
    • C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D1/00—Fertilisers containing potassium
    • 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
    • C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
    • 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
    • C05G5/10—Solid or semi-solid fertilisers, e.g. powders
    • C05G5/14—Tablets, spikes, rods, blocks or balls
    • 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
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/02—Odour removal or prevention of malodour
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/04—Disinfection
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
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  • Molecular Biology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biotechnology (AREA)
  • Microbiology (AREA)
  • Biochemistry (AREA)
  • Biomedical Technology (AREA)
  • Pest Control & Pesticides (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Inorganic Chemistry (AREA)
  • Soil Sciences (AREA)
  • Tropical Medicine & Parasitology (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fertilizers (AREA)

Abstract

The invention relates to the technical field of pig manure processing, and discloses a method for preparing a biological fertilizer from pig manure in a pig farm. According to the invention, wet pig manure produced in a pig farm is subjected to solid-liquid separation to be separated into pig manure and pig urine, and the separated pig manure is collected and processed into solid bio-fertilizer in a dry manure cleaning manner to be used as a base fertilizer or an organic fertilizer for rice; collecting pig urine and cleaning colony house sewage by using an ectopic fermentation bed, and performing zero-pollution discharge after fermentation; in the processing process, pig manure solid, pig urine, cleaning colony house sewage and gas deodorization are processed in a multi-element mode, and zero pollution of pig manure processing is achieved; in the processing process of the solid biomass fertilizer, the fermentation technology of bacillus subtilis and bacillus licheniformis is selected, and the organic fertilizer is prepared by matching auxiliary materials. The prepared bio-organic fertilizer product is brown powder in sensory expression, uniform and free of malodor, has a validity period of half a year, and meets the requirements of national bio-organic fertilizer technical standards (NY 884-2012).

Description

Method for preparing biological fertilizer from pig manure in pig farm
Technical Field
The invention belongs to the technical field of pig manure processing, and particularly relates to a method for preparing a biological fertilizer from pig manure in a pig farm.
Background
The pig farm sewage is still the most outstanding problem of environmental pollution caused by the current large-scale pig farm, and the pig farm wastewater contains a large amount of pollutants such as pig manure residues, urine water and the like, which are mainly reflected in pollution indexes such as COD (chemical oxygen demand), BOD (biochemical oxygen demand), SS (suspended solids), ammonia nitrogen and the like. The resource utilization of pig excrement in a pig farm comprises the direction of resource treatment of pig manure and pig urine for preparing biological fertilizer from the pig manure, and the collection, fermentation and processing of the solid wastes of the pig manure for preparing the biological fertilizer are core technologies for preparing the biological fertilizer from the pig manure.
Disclosure of Invention
The invention aims to provide a method for preparing a biological fertilizer from pig manure in a pig farm, which can respond to the problems mentioned in the background technology.
The invention is realized by the following technical scheme:
a method for preparing biological fertilizer from pig manure in pig farms specifically separates wet pig manure transported and output from the pig farms, separates the wet pig manure into pig manure and pig urine, collects the separated pig manure, and processes the pig manure into solid biological fertilizer in a dry manure cleaning mode to be used as a base fertilizer or an organic fertilizer for rice.
The processing process of the solid biomass fertilizer is as follows:
a. collecting pig manure, conveying the pig manure to a manure storage tank in a dry manure cleaning mode, separating the pig manure from pig urine, taking the separated pig manure, sealing the pig manure in the manure storage tank, performing high-pressure sterilization for 8-10 hours under the conditions of pressure of 0.4-0.6 MPa and temperature of 26-38 ℃, introducing at least one air inlet pipe to the bottom of the manure storage tank after the sterilization is finished, introducing an air outlet pipe to the upper opening of the manure storage tank, extracting air from the air outlet pipe by using an air extraction pump, continuing for 3-5 hours, and performing extraction and spraying in an ectopic fermentation bed for treatment;
b. and mixing the separated pig manure after air extraction with a bacillus subtilis and bacillus licheniformis mixed strain, diluting the strain and clear water according to the ratio of 1: 10, and soaking in a container for 3 hours to activate the strain, wherein the strain accounts for 1-2% of the total weight of the pig manure. Uniformly stirring, carrying out anaerobic fermentation for 2-4 days under the conditions that the temperature is 25-28 ℃ and the humidity is 50-60%, and carrying out aerobic fermentation for 2-4 days under the same conditions; the humidity of the pig manure is regulated to 45-50% in the fermentation process;
c. drying the filtered pig manure until the water content is less than or equal to 6%, drying and airing for 3-5 d, crushing and sieving with a 150-mesh sieve, adding auxiliary materials, mixing and stirring uniformly the prepared pig manure powder and straw or mushroom residue powder according to the proportion of 100: 10-15, turning over and airing the mixture for 1-2 d, transferring the mixture into a granulator, and preparing spherical particles with the diameter of 2mm to obtain the solid biomass fertilizer.
Preferably, the odor treatment method comprises the following steps:
pumping the pumped gas and spraying the gas on an ectopic fermentation bed, and setting up the ectopic fermentation bed at the downwind position outside the pigsty, wherein the volume of the fermentation bed is 0.3m per pig3The width of the bed is 3.65m and the depth is 0.7m (determined according to the ploughing depth), a water absorbing material is paved in the fermentation bed, the water absorbing material is composed of 30% sawdust, 70% straw, rice hulls and mushroom residue powder, the paving height is 45cm, and the gas obtained by the fermentation of bacillus subtilis and bacillus licheniformis in a ratio of 1:1 is pollution-free.
Preferably, the mixed bacteria are prepared by mixing bacillus subtilis and bacillus licheniformis according to the ratio of 1: 1.5.
Preferably, the auxiliary material has a water content of less than or equal to 6% and a particle size of 0.5mm, and comprises the following raw materials in parts by weight:
15-20 parts of straw or mushroom residue powder, 45-60 parts of plant ash and 45-50 parts of humus.
More preferably, the auxiliary material has the water content of 6% and the granularity of 0.5mm, and comprises the following raw materials in parts by weight:
15 parts of straw or mushroom residue powder, 45 parts of plant ash and 45 parts of humus soil.
The invention has the beneficial effects that:
compared with the prior art, the method selects the wet pig manure transported from a pig farm as a raw material, separates the wet pig manure into the pig manure and the pig urine, separates the pig manure into the pig manure and the pig urine, collects the separated pig manure, and processes the pig manure into the solid bio-fertilizer by adopting a dry manure cleaning mode to be used as a base fertilizer or an organic fertilizer for rice; collecting pig urine and cleaning colony house sewage by using an ectopic fermentation bed, and performing zero-pollution discharge after fermentation; in the processing process, pig manure solid, pig urine, cleaning colony house sewage and gas deodorization are processed in a multi-element mode, and zero pollution of pig manure processing is achieved;
moreover, in the processing process of the solid biomass fertilizer, the fermentation technology of bacillus subtilis and bacillus licheniformis is selected, and the organic fertilizer is prepared by matching auxiliary materials, so that the odor of pig manure is effectively removed, the efficiency is high, the harm is not generated, and the solid biomass fertilizer is suitable for being used as a base fertilizer or an organic fertilizer.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments, but the technical solutions provided by the present invention include not only the contents shown in the examples.
Example 1
The embodiment provides a method for preparing a biological fertilizer from pig manure in a pig farm, which comprises the steps of taking wet pig manure transported and output from the pig farm as a raw material, separating the wet pig manure into pig manure and pig urine, separating the pig manure into the pig manure and the pig urine, collecting the separated pig manure, and processing the pig manure into a solid biological fertilizer in a dry and clear manure manner to be used as a base fertilizer or an organic fertilizer for rice. The processing process of the solid biomass fertilizer is as follows:
a. collecting pig manure, conveying the pig manure to a manure storage tank in a dry manure cleaning mode, separating the pig manure from pig urine, taking the separated pig manure, sealing the pig manure in the manure storage tank, performing high-pressure sterilization for 8 hours under the conditions of pressure of 0.4MPa and temperature of 26 ℃, introducing at least one air inlet pipe to the bottom of the manure storage tank after the sterilization is finished, introducing an air outlet pipe to the upper opening of the manure storage tank, performing air extraction from the air outlet pipe by using an air extraction pump for 3 hours, and performing extraction and spraying in an ectopic fermentation bed for treatment;
b. and mixing the separated pig manure after air extraction with a mixed strain of bacillus subtilis and bacillus licheniformis according to the ratio of 1:1.5, diluting the strain and clear water according to the ratio of 1: 10, and soaking in a container for 3 hours to activate the strain, wherein the strain accounts for 1-2% of the total weight of the pig manure. Stirring uniformly, performing anaerobic fermentation for 2d under the conditions of temperature 25 ℃ and humidity 50%, and performing aerobic fermentation for 2d under the same conditions; the humidity of the pig manure is regulated to 45% in the fermentation process;
c. drying the filtered pig manure until the water content is less than or equal to 6%, drying and airing for 3d, crushing and sieving by a 150-mesh sieve, adding auxiliary materials, wherein the water content of the auxiliary materials is less than or equal to 6%, and the particle size is 0.5mm, and the auxiliary materials comprise the following raw materials in parts by weight: 15 parts of straw or mushroom residue powder, 45 parts of plant ash and 45 parts of humus soil, uniformly mixing the prepared pig manure powder and the straw or mushroom residue powder according to the proportion of 100:10, turning and drying the mixture for 1 day, transferring the mixture into a granulator, and preparing spherical particles with the diameter of 2mm to obtain the solid biomass fertilizer.
Example 2
The embodiment provides a method for preparing a biological fertilizer from pig manure in a pig farm, which comprises the steps of taking wet pig manure transported and output from the pig farm as a raw material, separating the wet pig manure into pig manure and pig urine, separating the pig manure into the pig manure and the pig urine, collecting the separated pig manure, and processing the pig manure into a solid biological fertilizer in a dry and clear manure manner to be used as a base fertilizer or an organic fertilizer for rice. The processing process of the solid biomass fertilizer is as follows:
a. collecting pig manure, conveying the pig manure to a manure storage tank in a dry manure cleaning mode, separating the pig manure from pig urine, taking the separated pig manure, sealing the pig manure in the manure storage tank, performing high-pressure sterilization for 10 hours under the conditions of 0.6MPa of pressure and 38 ℃, introducing at least one air inlet pipe to the bottom of the manure storage tank after the sterilization is finished, introducing an air outlet pipe to the upper opening of the manure storage tank, performing air extraction from the air outlet pipe by using an air extraction pump for 5 hours, and performing extraction and spraying in an ectopic fermentation bed for treatment;
b. mixing Bacillus subtilis and Bacillus licheniformis mixed strains according to the ratio of 1:1.5 into the separated pig manure after air extraction, diluting the strains with clear water according to the ratio of 1: 10, and soaking in a container for 3h to activate the strains, wherein the strains account for 2% of the total weight of the pig manure. Stirring uniformly, performing anaerobic fermentation for 4 days at the temperature of 28 ℃ and the humidity of 60%, and performing aerobic fermentation for 4 days under the same conditions; the humidity of the pig manure is regulated to 50% in the fermentation process;
c. drying the filtered pig manure until the water content is less than or equal to 6%, drying and airing for 5d, crushing and sieving by a 150-mesh sieve, adding auxiliary materials, wherein the water content of the auxiliary materials is less than or equal to 6%, and the particle size is 0.5mm, and the auxiliary materials comprise the following raw materials in parts by weight: 20 parts of straw or mushroom residue powder, 60 parts of plant ash and 50 parts of humus soil, uniformly mixing the prepared pig manure powder and the straw or mushroom residue powder according to the proportion of 100:15, turning and drying the mixture for 2 days, transferring the mixture into a granulator, and preparing spherical particles with the diameter of 2mm to obtain the solid biomass fertilizer.
Example 3
The embodiment provides a method for preparing a biological fertilizer from pig manure in a pig farm, which comprises the steps of taking wet pig manure transported and output from the pig farm as a raw material, separating the wet pig manure into pig manure and pig urine, separating the pig manure into the pig manure and the pig urine, collecting the separated pig manure, and processing the pig manure into a solid biological fertilizer in a dry and clear manure manner to be used as a base fertilizer or an organic fertilizer for rice. The processing process of the solid biomass fertilizer is as follows:
a. collecting pig manure, conveying the pig manure to a manure storage tank in a dry manure cleaning mode, separating the pig manure from pig urine, taking the separated pig manure, sealing the pig manure in the manure storage tank, performing high-pressure sterilization for 9 hours under the conditions of 0.5MPa of pressure and 32 ℃, introducing at least one air inlet pipe to the bottom of the manure storage tank after the sterilization is finished, introducing an air outlet pipe to the upper opening of the manure storage tank, performing air extraction from the air outlet pipe by using an air extraction pump for 4 hours, and performing extraction and spraying in an ectopic fermentation bed for treatment;
b. mixing Bacillus subtilis and Bacillus licheniformis mixed strains according to the ratio of 1:1.5 into the separated pig manure after air extraction, diluting the strains and clear water according to the ratio of 1: 10, and soaking in a container for 3h to activate the strains, wherein the strains account for 1.5% of the total weight of the pig manure. Stirring uniformly, performing anaerobic fermentation for 3d under the conditions of the temperature of 26 ℃ and the humidity of 55%, and performing aerobic fermentation for 3d under the same conditions; the humidity of the pig manure is regulated to 48% in the fermentation process;
c. and (3) drying the filtered pig manure until the water content is less than or equal to 6%, drying and airing for 4d, crushing and sieving by a 150-mesh sieve, adding auxiliary materials, preparing pig manure fragments and straw or mushroom residue fragments, uniformly mixing and stirring the mixture according to the proportion of 100:12, turning and airing the mixture for 1.5d, transferring the mixture into a granulator, and preparing spherical particles with the diameter of 2mm to obtain the solid biomass fertilizer.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the present invention without departing from the technical spirit of the present invention.

Claims (5)

1. A method for preparing a biological fertilizer from pig manure in a pig farm is characterized by comprising the following steps:
a. collecting pig manure, conveying the pig manure to a manure storage tank in a dry manure cleaning mode, separating the pig manure from pig urine, taking the separated pig manure, sealing the pig manure in the manure storage tank, performing high-pressure sterilization for 8-10 hours under the conditions of pressure of 0.4-0.6 MPa and temperature of 26-38 ℃, introducing at least one air inlet pipe to the bottom of the manure storage tank after the sterilization is finished, introducing an air outlet pipe to the upper opening of the manure storage tank, extracting air from the air outlet pipe by using an air extraction pump, continuing for 3-5 hours, and performing extraction and spraying in an ectopic fermentation bed for treatment;
b. and mixing the separated pig manure after air extraction with a bacillus subtilis and bacillus licheniformis mixed strain, diluting the strain and clear water according to the ratio of 1: 10, and soaking in a container for 3 hours to activate the strain, wherein the strain accounts for 1-2% of the total weight of the pig manure. Uniformly stirring, carrying out anaerobic fermentation for 2-4 days under the conditions that the temperature is 25-28 ℃ and the humidity is 50-60%, and carrying out aerobic fermentation for 2-4 days under the same conditions; the humidity of the pig manure is regulated to 45-50% in the fermentation process;
c. drying the filtered pig manure until the water content is less than or equal to 6%, drying and airing for 3-5 d, crushing and sieving with a 150-mesh sieve, adding auxiliary materials, mixing and stirring uniformly the prepared pig manure powder and straw or mushroom residue powder according to the proportion of 100: 10-15, turning over and airing the mixture for 1-2 d, transferring the mixture into a granulator, and preparing spherical particles with the diameter of 2mm to obtain the solid biomass fertilizer.
2. The method for preparing the biological fertilizer from the pig manure in the pig farm according to the claim 1, wherein the odor treatment method comprises the following steps:
pumping the pumped gas and spraying the gas on an ectopic fermentation bed, and setting up the ectopic fermentation bed at the downwind position outside the pigsty, wherein the volume of the fermentation bed is 0.3m per pig3The width of the bed is 3.65m and the depth is 0.7m (determined according to the ploughing depth), water-absorbing materials are paved in the fermentation bed, the water-absorbing materials comprise 30% of sawdust, 70% of straw, rice hulls and mushroom residue powder, the paving height is 45cm, and no pollution is achieved after the fermentation bed is used.
3. The method for preparing the biological fertilizer from the pig manure in the pig farm according to the claim 1, wherein the mixed bacteria is prepared by mixing bacillus subtilis and bacillus licheniformis according to the proportion of 1:1 or the proportion of 1: 1.5.
4. The method for preparing the biological fertilizer from the pig manure in the pig farm according to claim 1, wherein the water content of the auxiliary materials is less than or equal to 6 percent, the granularity is 0.5mm, and the auxiliary materials comprise the following raw materials in parts by weight:
15-20 parts of straw or mushroom residue powder, 45-60 parts of plant ash and 45-50 parts of humus.
5. The method for preparing the biological fertilizer from the pig manure in the pig farm according to claim 4, wherein the auxiliary material contains 6% of water and has a particle size of 0.5mm, and comprises the following raw materials in parts by weight:
15 parts of straw or mushroom residue powder, 45 parts of plant ash and 45 parts of humus soil.
CN202010819659.5A 2020-08-14 2020-08-14 Method for preparing biological fertilizer from pig manure in pig farm Pending CN111848311A (en)

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Publication number Priority date Publication date Assignee Title
CN112725239A (en) * 2021-02-05 2021-04-30 宁夏大学 Decomposing inoculant with cellulose degradation and deodorization functions as well as preparation method and application thereof

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CN110436973A (en) * 2019-08-23 2019-11-12 贵州现代生态农业发展有限公司 A method of utilizing pig manure preparation biomass fertilizer

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CN110436973A (en) * 2019-08-23 2019-11-12 贵州现代生态农业发展有限公司 A method of utilizing pig manure preparation biomass fertilizer
CN110407424A (en) * 2019-08-26 2019-11-05 山东百家兴农业科技股份有限公司 A kind of dystopy fermentation bed processing animals and plants waste method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112725239A (en) * 2021-02-05 2021-04-30 宁夏大学 Decomposing inoculant with cellulose degradation and deodorization functions as well as preparation method and application thereof

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