CN104512985A - Piggery wastewater anaerobic digestion method for production of biogas - Google Patents

Piggery wastewater anaerobic digestion method for production of biogas Download PDF

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Publication number
CN104512985A
CN104512985A CN201410773511.7A CN201410773511A CN104512985A CN 104512985 A CN104512985 A CN 104512985A CN 201410773511 A CN201410773511 A CN 201410773511A CN 104512985 A CN104512985 A CN 104512985A
Authority
CN
China
Prior art keywords
biogas
piggery wastewater
anaerobic digestion
facultative
piggery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410773511.7A
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Chinese (zh)
Inventor
黎耀辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FOSHAN CITY GAOMING DISTRICT HECHAO AGRICULTURAL DEVELOPMENT Co Ltd
Original Assignee
FOSHAN CITY GAOMING DISTRICT HECHAO AGRICULTURAL DEVELOPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FOSHAN CITY GAOMING DISTRICT HECHAO AGRICULTURAL DEVELOPMENT Co Ltd filed Critical FOSHAN CITY GAOMING DISTRICT HECHAO AGRICULTURAL DEVELOPMENT Co Ltd
Priority to CN201410773511.7A priority Critical patent/CN104512985A/en
Publication of CN104512985A publication Critical patent/CN104512985A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5209Regulation methods for flocculation or precipitation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/20Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/02Aerobic processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2866Particular arrangements for anaerobic reactors
    • C02F3/2893Particular arrangements for anaerobic reactors with biogas recycling
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention provides a piggery wastewater anaerobic digestion method for production of biogas. The method includes the following steps: separation: separating solid and liquid by a filtration device; facultative acidification: sending the piggery wastewater into a facultative pond containing facultative bacteria; anaerobic fermentation: sending piggery wastewater into an anaerobic fermentation tank for fermentation, so as to produce biogas; aerobic aeration: sending piggery wastewater into a contact oxidation pond provided with elastic filler; and secondary biological purification: passing the wastewater successively through a biochemical reaction tank, a floc tank and a sedimentation tank, wherein the sedimentation tank is respectively connected with a disinfection tank and a sludge tank. The piggery wastewater anaerobic digestion method for production of biogas has COD removal rate above 90%; after anaerobic treatment, the wastewater can be used as liquid fertilizer for farmland, farmland irrigation water and aquaculture fertilizer water; and the produced biogas is mainly used as domestic fuel.

Description

The method of biogas is produced in a kind of piggery wastewater anaerobic digestion
Technical field
The present invention relates to a kind of method of producing biogas, specifically, relate to a kind of method that biogas is produced in piggery wastewater anaerobic digestion.
Background technology
Pork is the main body of China's meat production, the main meat consumption of Ye Shi urban and rural residents, and in China, live pig production cost is low, and processed edge is obvious, thus market at home and abroad has suitable competitive power.Live pig be China's cultivation widest in area, relate to the maximum a kind of livestock and poultry species of cultivation peasant household, in Animal Husbandry in China structure, occupy critical role.Along with the process of agricultural modernization; the large-scale cultivation industry of live pig is replacing the production structure adjustment of huge numbers of families gradually; on this basis; China's Swine Production experiencings and is changed to intensive style by decentralized; transformed to modernization by conventional husbandry, the process changed to quality and efficiency by scalar type, since reform and opening-up; China live pig produces and has broken away from traditional single yard feeding pattern, progressively to mass-producing, specialization and intensive future development.But with the production-scale expansion of live pig, the resources and environment problem in feeding process occurs thereupon, shortage of resources on the one hand, raw swine rearing quantity increases, and soil is occupied, and grain consumes in a large number, occurs the phenomenon of " striving ground with grain " and " striving grain with the people "; The large amount of sewage, ight soil etc. of the discharge of feeding live pig field cause severe environmental pollution on the other hand.
Along with the fast development of Chinese pig industry, the environmental problem that pig-breeding causes is more and more serious.Pig-breeding produce discharge the pollutent such as sewage, foul smell to vast rural area, river even potable water source district cause comparatively serious pollution.Such as year livestock on hand 3000 the defecation of pig farm year be just about 2200t, urinate in year and be about more than 1000 ton, add that to rinse sewage water discharge amount considerable.The sewage quantity that traditional pattern of raising pigs produces is large, Pollutant levels are high, administer difficulty, investment greatly, costly, even if adopt the administering method of the three-dimensional patterns such as pig-fish, also there is significant limitation, be difficult to all dissolve pollutent, sewage of simultaneously dissolving for a long time causes soil ecology unbalance, soil productivity reduces, also can polluted underground water, makes pig industry be difficult to sustainable development.
Summary of the invention
Instant invention overcomes shortcoming of the prior art, provide a kind of method that biogas is produced in piggery wastewater anaerobic digestion, piggery wastewater is effectively processed, for the production of biogas, not only protects environment, and achieve the recycling of piggery wastewater.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A method for biogas is produced in piggery wastewater anaerobic digestion, comprises the following steps:
1) solid-liquid separation
2) facultative acidifying
3) anaerobically fermenting
4) aerobic aeration
5) two stage biological purification.
Further, described solid-liquid separation is by solid and liquid separation by filtration unit.
Further, described facultative acidifying, for send in facultative pond by piggery wastewater, contains facultative bacteria in described facultative pond.
Further, described anaerobically fermenting is that fermentation generation biogas is carried out in piggery wastewater inflow anaerobically fermenting pond.
Further, described aerobic aeration is that piggery wastewater flows into contact-oxidation pool, arranges elastic filler in described oxidation pond.
Further, described two stage biological purification comprises the biochemical reaction tank, Jiao Yuchi and the settling tank that connect successively, and described settling tank connects and connects sterilization pool and sludge sump respectively.
Compared with prior art, the invention has the beneficial effects as follows:
The method of biogas is produced in a kind of piggery wastewater anaerobic digestion of the present invention, its COD clearance is more than 90%, sewage after anaerobic treatment can be used as farmland liquid fertilizer, farmland irrigation water and aquaculture rich water, and produces biogas simultaneously, and biogas is mainly used to fuel of doing manual labour.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
A method for biogas is produced in piggery wastewater anaerobic digestion, comprises the following steps:
Solid-liquid separation: by filtration unit by solid and liquid separation, filtration unit is grating tank, and grating tank arranges twice grid.
Facultative acidifying: piggery wastewater is sent in facultative pond, containing facultative bacteria in described facultative (acidication) pond, pond base fabric is put and is arranged perforated pipe more, waste water enters at the bottom of pond, stir pool bottom sludge, ensure that waste water fully contacts with acidication mud, utilize its hydrolysis and acid production to improve the biochemical of waste water.
Anaerobically fermenting: piggery wastewater flows into anaerobically fermenting pond and carries out fermentation generation biogas.
Aerobic aeration: piggery wastewater flows into contact-oxidation pool, arranges elastic filler, filler is covered with microbial film in described oxidation pond, adopt blast aeration and the oxygenation of micro-pore aeration scatterer, filling ratio is 78%, and the mounting distance between each string filler is 50mm.
Two stage biological purifies: comprise the biochemical reaction tank, Jiao Yuchi and the settling tank that connect successively, and settling tank connects and connects sterilization pool and sludge sump respectively, and qualified discharge after sterilization pool sterilization, sludge sump thickening squeezed into by settling tank base sludge pump.
Last it is noted that these are only the preferred embodiments of the present invention; be not limited to the present invention; although with reference to embodiment to invention has been detailed description; for a person skilled in the art; it still can be modified to the technical scheme described in foregoing embodiments; or equivalent replacement is carried out to wherein portion of techniques feature; but it is within the spirit and principles in the present invention all; any amendment of doing, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (6)

1. a method for biogas is produced in piggery wastewater anaerobic digestion, it is characterized in that, comprises the following steps:
1) solid-liquid separation
2) facultative acidifying
3) anaerobically fermenting
4) aerobic aeration
5) two stage biological purification.
2. the method for biogas is produced in a kind of piggery wastewater anaerobic digestion according to claim 1, and it is characterized in that, described solid-liquid separation is by solid and liquid separation by filtration unit.
3. the method for biogas is produced in a kind of piggery wastewater anaerobic digestion according to claim 1, it is characterized in that, described facultative acidifying, for send in facultative pond by piggery wastewater, contains facultative bacteria in described facultative pond.
4. the method for biogas is produced in a kind of piggery wastewater anaerobic digestion according to claim 1, it is characterized in that, described anaerobically fermenting is that fermentation generation biogas is carried out in piggery wastewater inflow anaerobically fermenting pond.
5. the method for biogas is produced in a kind of piggery wastewater anaerobic digestion according to claim 1, it is characterized in that, described aerobic aeration is that piggery wastewater flows into contact-oxidation pool, arranges elastic filler in described oxidation pond.
6. the method for biogas is produced in a kind of piggery wastewater anaerobic digestion according to claim 1, it is characterized in that, described two stage biological purification comprises the biochemical reaction tank, Jiao Yuchi and the settling tank that connect successively, and described settling tank connects and connects sterilization pool and sludge sump respectively.
CN201410773511.7A 2014-12-13 2014-12-13 Piggery wastewater anaerobic digestion method for production of biogas Pending CN104512985A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

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CN104512985A true CN104512985A (en) 2015-04-15

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105036331A (en) * 2015-07-06 2015-11-11 中国电建集团贵阳勘测设计研究院有限公司 Northwest low-temperature region wastewater treatment method, and device thereof
CN105309371A (en) * 2015-04-20 2016-02-10 中国农业科学院农业环境与可持续发展研究所 A pig and fish three-dimensional combined culture waste water internal circulation method
CN106332839A (en) * 2016-08-26 2017-01-18 莫晨虹 Ecological pig breeding method
CN108249708A (en) * 2018-03-01 2018-07-06 张守明 A kind of efficient livestock-raising water treatment system
CN109706188A (en) * 2019-01-07 2019-05-03 广东广垦畜牧工程研究院有限公司 A method of improving piggery wastewater form anaerobic fermentation methane yield

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1837082A (en) * 2006-04-05 2006-09-27 深圳市金达莱环保有限公司 Treatment process for removing ammonia nitrogen in waste water
CN101234840A (en) * 2008-02-29 2008-08-06 福建省农业科学院 Hogpen feces treatment technique
CN101786705A (en) * 2010-02-04 2010-07-28 上海新豫环保科技有限公司 Waste water treatment system
CN101786782A (en) * 2010-03-24 2010-07-28 东北农业大学 Cattle manure anaerobic fermentation process
CN101863583A (en) * 2010-04-21 2010-10-20 南昌大学 Technology for treating piggery wastewater by methane tank, biofilm reactor and artificial wetland
CN102503033A (en) * 2011-11-08 2012-06-20 南昌大学 Technique for treating pig raising liquid waste by circular anaerobic reactor, sequencing batch biofilm, constructed wetland and facultative lagoon
CN103145308A (en) * 2013-03-05 2013-06-12 安徽禹王养殖有限公司 Method for producing biogas in large biogas project

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1837082A (en) * 2006-04-05 2006-09-27 深圳市金达莱环保有限公司 Treatment process for removing ammonia nitrogen in waste water
CN101234840A (en) * 2008-02-29 2008-08-06 福建省农业科学院 Hogpen feces treatment technique
CN101786705A (en) * 2010-02-04 2010-07-28 上海新豫环保科技有限公司 Waste water treatment system
CN101786782A (en) * 2010-03-24 2010-07-28 东北农业大学 Cattle manure anaerobic fermentation process
CN101863583A (en) * 2010-04-21 2010-10-20 南昌大学 Technology for treating piggery wastewater by methane tank, biofilm reactor and artificial wetland
CN102503033A (en) * 2011-11-08 2012-06-20 南昌大学 Technique for treating pig raising liquid waste by circular anaerobic reactor, sequencing batch biofilm, constructed wetland and facultative lagoon
CN103145308A (en) * 2013-03-05 2013-06-12 安徽禹王养殖有限公司 Method for producing biogas in large biogas project

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105309371A (en) * 2015-04-20 2016-02-10 中国农业科学院农业环境与可持续发展研究所 A pig and fish three-dimensional combined culture waste water internal circulation method
CN105309371B (en) * 2015-04-20 2017-12-12 中国农业科学院农业环境与可持续发展研究所 The method of circulation in the three-dimensional joint breeding wastewater of one boar fish
CN105036331A (en) * 2015-07-06 2015-11-11 中国电建集团贵阳勘测设计研究院有限公司 Northwest low-temperature region wastewater treatment method, and device thereof
CN106332839A (en) * 2016-08-26 2017-01-18 莫晨虹 Ecological pig breeding method
CN108249708A (en) * 2018-03-01 2018-07-06 张守明 A kind of efficient livestock-raising water treatment system
CN109706188A (en) * 2019-01-07 2019-05-03 广东广垦畜牧工程研究院有限公司 A method of improving piggery wastewater form anaerobic fermentation methane yield

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Application publication date: 20150415