CN107857451A - A kind of technique for producing biogas using livestock and poultry solid manure - Google Patents
A kind of technique for producing biogas using livestock and poultry solid manure Download PDFInfo
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- CN107857451A CN107857451A CN201711384221.3A CN201711384221A CN107857451A CN 107857451 A CN107857451 A CN 107857451A CN 201711384221 A CN201711384221 A CN 201711384221A CN 107857451 A CN107857451 A CN 107857451A
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- 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
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- 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
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- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- 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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F9/00—Fertilisers from household or town refuse
- C05F9/04—Biological compost
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- 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
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- 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
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- 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
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a kind of technique that biogas is produced using livestock and poultry solid manure, belong to livestock and poultry cultivation technical field.Comprise the following steps：1st, livestock and poultry solid manure pre-processes；2nd, anaerobic bio-treated, including：2A, make fermentation auxiliary material；2B, configuration zymocyte liquid；2C, feces of livestock and poultry and fermentation auxiliary material are sufficiently mixed, and compound is made；2D, compound is thrown to methane-generating pit, zymocyte liquid is sprayed in compound；2E, anaerobic fermentation；The collecting methane of generation is in gas tank；It can apply ground as green manure after the further processed processing of 2F, biogas slurry, biogas residue.Present invention process is simple, cost is cheap, fermenting speed is fast, and uniformly, stably, the nutrient of fermentation loss is few for aerogenesis, and the organic fertilizer fertilizer efficiency of acquisition is high, using conveniently, realizes pollution-free ecological health livestock breeding model.
Description
Technical field
The present invention relates to a kind of technique that biogas is produced using livestock and poultry solid manure, belong to livestock and poultry cultivation technical field.
Background technology
In recent years, livestock and poultry breeding industry is rapidly developed, but simultaneously, there is also many distinct issues.It is wherein most prominent
The problem of be：Large-scale breeding livestock and poultry concentrate discharge and lack effectively processing, huge pollution sources are constituted, to the prestige of environment
The side of body has turned into the major obstacle for restricting livestock and poultry breeding industry development from now on.
At present, poultry excrement and urine disposal pattern is summed up and mainly had：Qualified discharge pattern, breeding balanced mode, biogas life
Morphotype formula etc..No matter however, which kind of pattern, or investing, larger, operating cost is high, economic benefit is low, to operating personnel's technology
It is it is required that high；The soil of supporting large area is needed to dissolve liquid dung, and when muck is applied by farmland, crop varieties and muck are used
Many weak points such as amount limitation, possible polluted underground water, air.
Scale livestock farming more than China, 90% does not have treatment for cow manure job facilities, or even connects simple separation of solid and liquid
Machine does not all have.And in using the dirty plant of job facilities processing excrement, to obtain preferable economic benefit, most of is with energy
Source is main purpose with comprehensive utilization, that is, builds corresponding biogas engineering.Biogas is used for central gas supply（Minority generates electricity）, biogas slurry,
Biogas residue is used as farmland, vegetable plot, fruit tree and the fertilizer of industrial crops and feed addictive etc., and only only a few is based on environmental protection
Syllabus.Its technological process is roughly the same with foreign technology, i.e.,：Separation of solid and liquid-anaerobic digestion-Aerobic Process for Treatment-water plant
The pool.Some engineerings reduce operating cost, the water outlet of anaerobic digestion is directly entered Plant Pond to reduce the consumption of the energy（Slope,
Ditch）Discharged after being handled.
How to evade and effectively solve the above problems, work out a kind of ideal processing that excrement pollution is eliminated from source
Technology, pollution-free ecological health livestock breeding model is realized, the problem of being urgent need to resolve.
The content of the invention
It is above-mentioned to solve it is an object of the present invention to provide a kind of technique that biogas is produced using livestock and poultry solid manure
Technical problem.
The present invention is achieved through the following technical solutions：
A kind of technique for producing biogas using livestock and poultry solid manure, it is characterised in that：Comprise the following steps：
1st, livestock and poultry solid manure pre-processes
1A, livestock and poultry solid manure is placed in manure pit, hydraulic fracture carried out to excrement with giant, by the excrement of hydraulic fracture
Just excrement dirt is mixed to form with water；
1B, excrement dirt is set to flow through grid, by the filtering of grid, weeds, feather in removing excrement dirt；
1C, the excrement dirt by filtering flow to setting pot, and excrement dirt is stood in setting pot, the gravel in excrement dirt is deposited to bottom of pond；
1D, the excrement for floating over upper strata is isolated from setting pot, dewater treatment is carried out to excrement with solid-liquid separating machine, by containing for excrement
Water is down to 20-25%；Waste water in setting pot drains into collecting-tank；
2nd, anaerobic bio-treated
2A, make fermentation auxiliary material：The fermentation auxiliary material is formulated by the raw material of following parts by weight：Tea grounds 20-30 parts, eat
Bacteria residue 20-30 parts, bagasse 20-30 parts, silkworm chrysalis skin 10-15 parts, rapeseed dregs 15-20 parts, peanut meal 15-20 parts, potato peel 20-
30 parts, turf 15-20 parts；Above-mentioned raw materials are crushed respectively, after crossing 30-50 mesh sieves, are sufficiently mixed；
2B, prepare zymocyte liquid：The zymocyte liquid is by photosynthetic bacteria, lactic acid bacteria, saccharomycete, enterococcus faecalis, Lactobacillus plantarum, egg
White enzyme is prepared；The percent by volume of each raw material is in the zymocyte liquid：Photosynthetic bacteria 15-20%, lactic acid bacteria 15-20%, ferment
Female bacterium 15-20%, enterococcus faecalis 15-20%, Lactobacillus plantarum 15-20%, protease 20-25%；
The fermentation auxiliary material that 2C, the feces of livestock and poultry for obtaining step 1D make with step 2A is according to 5:1 proportioning is sufficiently mixed,
Compound is made；
2D, compound made from step 2C is thrown to methane-generating pit, in launch process, zymocyte liquid made from step 2B is sprayed
In compound；The dosage of the zymocyte liquid and the weight ratio of compound are 1:500；
2E, taken off twice with turning over the machine of taking off and turn over, compound is well mixed with zymocyte liquid, start anaerobic fermentation；The biogas of generation is received
Collect in gas tank；
2F, when the biogas output in methane-generating pit drastically declines, show that the compound in methane-generating pit is fully decomposed and ferments
Complete；Separation of solid and liquid is carried out to it at this point it is possible to open methane-generating pit and take out the biogas slurry of the inside, biogas residue with pumping, after separation
Biogas slurry, can apply ground as green manure after the further processed processing of biogas residue.
Beneficial effect
Compared with prior art, feces of livestock and poultry is changed into biogas energy and organic by the present invention by biogas anaerobic fermentation technology
Fertilizer, innoxious, recycling treatment to excrement are realized, reduces the pollution to environment, improves the Ecological Effect of livestock and poultry cultivation
Benefit and economic benefit, caused high temperature helps thoroughly to kill the pathogenic microorganism in excrement during biogas anaerobic fermentation, subtracts
Few transmission of disease.Present invention process is simple, cost is cheap, fermenting speed is fast, aerogenesis uniformly, stably, the nutrient of fermentation loss
Few, the organic fertilizer fertilizer efficiency of acquisition is high, using conveniently, realizes pollution-free ecological health livestock breeding model.
Embodiment
Below with reference to specific embodiment, the present invention is described further.
Embodiment 1：
Using the technique of livestock and poultry solid manure production biogas described in the present embodiment, comprise the following steps：
1st, livestock and poultry solid manure pre-processes
Livestock and poultry solid manure is placed in manure pit, hydraulic fracture is carried out to excrement with giant, by the excrement of hydraulic fracture
Excrement dirt is mixed to form with water；Excrement dirt is set to flow through grid, by the filtering of grid, weeds, feather in removing excrement dirt；By filtering
Excrement dirt flow to setting pot, excrement dirt is stood in setting pot, the gravel in excrement dirt is deposited to bottom of pond；Isolate and float over from setting pot
The excrement on upper strata, dewater treatment is carried out to excrement with solid-liquid separating machine, the water content of excrement is down to 20-25%；In setting pot
Waste water drains into collecting-tank；
2nd, anaerobic bio-treated
2A, make fermentation auxiliary material：The fermentation auxiliary material is formulated by the raw material of following parts by weight：20 parts of tea grounds, edible mushroom
20 parts of slag, 20 parts of bagasse, 10 parts of silkworm chrysalis skin, 15 parts of rapeseed dregs, 15 parts of peanut meal, 20 parts of potato peel, 15 parts of turf；Will be above-mentioned
Raw material is crushed respectively, after crossing 30 mesh sieves, is sufficiently mixed；
2B, prepare zymocyte liquid：The zymocyte liquid is by photosynthetic bacteria, lactic acid bacteria, saccharomycete, enterococcus faecalis, Lactobacillus plantarum, egg
White enzyme is prepared；The percent by volume of each raw material is in the zymocyte liquid：Photosynthetic bacteria 15%, lactic acid bacteria 15%, saccharomycete
15%th, enterococcus faecalis 15%, Lactobacillus plantarum 20%, protease 20%；
The fermentation auxiliary material that 2C, the feces of livestock and poultry for obtaining step 1D make with step 2A is according to 5:1 proportioning is sufficiently mixed,
Compound is made；
2D, compound made from step 2C is thrown to methane-generating pit, in launch process, zymocyte liquid made from step 2B is sprayed
In compound；The dosage of the zymocyte liquid and the weight ratio of compound are 1:500；
2E, taken off twice with turning over the machine of taking off and turn over, compound is well mixed with zymocyte liquid, start anaerobic fermentation；The biogas of generation is received
Collect in gas tank；
2F, when the biogas output in methane-generating pit drastically declines, show that the compound in methane-generating pit is fully decomposed and ferments
Complete；Separation of solid and liquid is carried out to it at this point it is possible to open methane-generating pit and take out the biogas slurry of the inside, biogas residue with pumping, after separation
Biogas slurry, can apply ground as green manure after the further processed processing of biogas residue.
Embodiment 2：
Using the technique of livestock and poultry solid manure production biogas described in the present embodiment, comprise the following steps：
1st, livestock and poultry solid manure pre-processes
Livestock and poultry solid manure is placed in manure pit, hydraulic fracture is carried out to excrement with giant, by the excrement of hydraulic fracture
Excrement dirt is mixed to form with water；Excrement dirt is set to flow through grid, by the filtering of grid, weeds, feather in removing excrement dirt；By filtering
Excrement dirt flow to setting pot, excrement dirt is stood in setting pot, the gravel in excrement dirt is deposited to bottom of pond；Isolate and float over from setting pot
The excrement on upper strata, dewater treatment is carried out to excrement with solid-liquid separating machine, the water content of excrement is down to 20-25%；In setting pot
Waste water drains into collecting-tank；
2nd, anaerobic bio-treated
2A, make fermentation auxiliary material：The fermentation auxiliary material is formulated by the raw material of following parts by weight：30 parts of tea grounds, edible mushroom
30 parts of slag, 30 parts of bagasse, 15 parts of silkworm chrysalis skin, 20 parts of rapeseed dregs, 20 parts of peanut meal, 30 parts of potato peel, 20 parts of turf；Will be above-mentioned
Raw material is crushed respectively, after crossing 50 mesh sieves, is sufficiently mixed；
2B, prepare zymocyte liquid：The zymocyte liquid is by photosynthetic bacteria, lactic acid bacteria, saccharomycete, enterococcus faecalis, Lactobacillus plantarum, egg
White enzyme is prepared；The percent by volume of each raw material is in the zymocyte liquid：Photosynthetic bacteria 20%, lactic acid bacteria 15%, saccharomycete
15%th, enterococcus faecalis 15%, Lactobacillus plantarum 15%, protease 20%；
The fermentation auxiliary material that 2C, the feces of livestock and poultry for obtaining step 1D make with step 2A is according to 5:1 proportioning is sufficiently mixed,
Compound is made；
2D, compound made from step 2C is thrown to methane-generating pit, in launch process, zymocyte liquid made from step 2B is sprayed
In compound；The dosage of the zymocyte liquid and the weight ratio of compound are 1:500；
2E, taken off twice with turning over the machine of taking off and turn over, compound is well mixed with zymocyte liquid, start anaerobic fermentation；The biogas of generation is received
Collect in gas tank；
2F, when the biogas output in methane-generating pit drastically declines, show that the compound in methane-generating pit is fully decomposed and ferments
Complete；Separation of solid and liquid is carried out to it at this point it is possible to open methane-generating pit and take out the biogas slurry of the inside, biogas residue with pumping, after separation
Biogas slurry, can apply ground as green manure after the further processed processing of biogas residue.
Embodiment 3：
Using the technique of livestock and poultry solid manure production biogas described in the present embodiment, comprise the following steps：
1st, livestock and poultry solid manure pre-processes
Livestock and poultry solid manure is placed in manure pit, hydraulic fracture is carried out to excrement with giant, by the excrement of hydraulic fracture
Excrement dirt is mixed to form with water；Excrement dirt is set to flow through grid, by the filtering of grid, weeds, feather in removing excrement dirt；By filtering
Excrement dirt flow to setting pot, excrement dirt is stood in setting pot, the gravel in excrement dirt is deposited to bottom of pond；Isolate and float over from setting pot
The excrement on upper strata, dewater treatment is carried out to excrement with solid-liquid separating machine, the water content of excrement is down to 20-25%；In setting pot
Waste water drains into collecting-tank；
2nd, anaerobic bio-treated
2A, make fermentation auxiliary material：The fermentation auxiliary material is formulated by the raw material of following parts by weight：25 parts of tea grounds, edible mushroom
25 parts of slag, 25 parts of bagasse, 12 parts of silkworm chrysalis skin, 18 parts of rapeseed dregs, 18 parts of peanut meal, 25 parts of potato peel, 17 parts of turf；Will be above-mentioned
Raw material is crushed respectively, after crossing 45 mesh sieves, is sufficiently mixed；
2B, prepare zymocyte liquid：The zymocyte liquid is by photosynthetic bacteria, lactic acid bacteria, saccharomycete, enterococcus faecalis, Lactobacillus plantarum, egg
White enzyme is prepared；The percent by volume of each raw material is in the zymocyte liquid：Photosynthetic bacteria 15%, lactic acid bacteria 15%, saccharomycete
20%th, enterococcus faecalis 15%, Lactobacillus plantarum 15%, protease 20%；
The fermentation auxiliary material that 2C, the feces of livestock and poultry for obtaining step 1D make with step 2A is according to 5:1 proportioning is sufficiently mixed,
Compound is made；
2D, compound made from step 2C is thrown to methane-generating pit, in launch process, zymocyte liquid made from step 2B is sprayed
In compound；The dosage of the zymocyte liquid and the weight ratio of compound are 1:500；
2E, taken off twice with turning over the machine of taking off and turn over, compound is well mixed with zymocyte liquid, start anaerobic fermentation；The biogas of generation is received
Collect in gas tank；
2F, when the biogas output in methane-generating pit drastically declines, show that the compound in methane-generating pit is fully decomposed and ferments
Complete；Separation of solid and liquid is carried out to it at this point it is possible to open methane-generating pit and take out the biogas slurry of the inside, biogas residue with pumping, after separation
Biogas slurry, can apply ground as green manure after the further processed processing of biogas residue.
Above-mentioned, although invention has been described in conjunction with specific embodiments, the limitation not to invention protection domain,
One of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art need not pay
The various modifications that creative work can be made are still within the scope of the present invention.
Claims (1)
- A kind of 1. technique for producing biogas using livestock and poultry solid manure, it is characterised in that：Comprise the following steps：（1）Livestock and poultry solid manure pre-processes（1A）Livestock and poultry solid manure is placed in manure pit, hydraulic fracture is carried out to excrement with giant, by hydraulic fracture Excrement is mixed to form excrement dirt with water；（1B）Excrement dirt is set to flow through grid, by the filtering of grid, weeds, feather in removing excrement dirt；（1C）Excrement dirt by filtering flow to setting pot, and excrement dirt is stood in setting pot, the gravel in excrement dirt is deposited to bottom of pond；（1D）The excrement for floating over upper strata is isolated from setting pot, dewater treatment is carried out to excrement with solid-liquid separating machine, by excrement Water content is down to 20-25%；Waste water in setting pot drains into collecting-tank；（2）Anaerobic bio-treated（2A）Make fermentation auxiliary material：The fermentation auxiliary material is formulated by the raw material of following parts by weight：Tea grounds 20-30 parts, food With bacteria residue 20-30 parts, bagasse 20-30 parts, silkworm chrysalis skin 10-15 parts, rapeseed dregs 15-20 parts, peanut meal 15-20 parts, potato peel 20-30 parts, turf 15-20 parts；Above-mentioned raw materials are crushed respectively, after crossing 30-50 mesh sieves, are sufficiently mixed；（2B）Prepare zymocyte liquid：The zymocyte liquid by photosynthetic bacteria, lactic acid bacteria, saccharomycete, enterococcus faecalis, Lactobacillus plantarum, Protease is prepared；The percent by volume of each raw material is in the zymocyte liquid：Photosynthetic bacteria 15-20%, lactic acid bacteria 15-20%, Saccharomycete 15-20%, enterococcus faecalis 15-20%, Lactobacillus plantarum 15-20%, protease 20-25%；（2C）By step（1D）The feces of livestock and poultry and step of acquisition（2A）The fermentation auxiliary material of making is according to 5:1 proportioning carries out abundant Mixing, compound is made；（2D）By step（2C）Obtained compound is thrown to methane-generating pit, in launch process, by step（2B）Obtained zymophyte Liquid is sprayed in compound；The dosage of the zymocyte liquid and the weight ratio of compound are 1:500；（2E）Taken off twice with turning over the machine of taking off and turning over, compound is well mixed with zymocyte liquid, start anaerobic fermentation；The biogas of generation is received Collect in gas tank；（2F）When the biogas output in methane-generating pit drastically declines, show that the compound in methane-generating pit is fully decomposed and ferments Complete；Separation of solid and liquid is carried out to it at this point it is possible to open methane-generating pit and take out the biogas slurry of the inside, biogas residue with pumping, after separation Biogas slurry, can apply ground as green manure after the further processed processing of biogas residue.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727071A (en) * | 2018-07-03 | 2018-11-02 | 深圳市朗坤环境集团股份有限公司 | A kind of method of livestock and poultry feces recycling |
| CN110679394A (en) * | 2019-11-10 | 2020-01-14 | 董霞 | Comprehensive utilization process method for agricultural wastes |
| CN111875195A (en) * | 2020-07-13 | 2020-11-03 | 广西大学 | Pig manure biological treatment process and utilization method |
| CN112607989A (en) * | 2020-11-26 | 2021-04-06 | 湖北同晟生物能源科技有限公司 | Method for producing biogas by utilizing anaerobic digestion of livestock manure |
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| CN201793440U (en) * | 2010-08-26 | 2011-04-13 | 西北农林科技大学 | Self-flow type thick and thin excrement dividing device |
| CN106186621A (en) * | 2016-08-22 | 2016-12-07 | 安徽逻根农业科技有限公司 | Feces of livestock and poultry harmless treatment and biogas fermentation technology |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108727071A (en) * | 2018-07-03 | 2018-11-02 | 深圳市朗坤环境集团股份有限公司 | A kind of method of livestock and poultry feces recycling |
| CN110679394A (en) * | 2019-11-10 | 2020-01-14 | 董霞 | Comprehensive utilization process method for agricultural wastes |
| CN111875195A (en) * | 2020-07-13 | 2020-11-03 | 广西大学 | Pig manure biological treatment process and utilization method |
| CN112607989A (en) * | 2020-11-26 | 2021-04-06 | 湖北同晟生物能源科技有限公司 | Method for producing biogas by utilizing anaerobic digestion of livestock manure |
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