CN105016586A - Pig farm wastewater treatment process - Google Patents

Pig farm wastewater treatment process Download PDF

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Publication number
CN105016586A
CN105016586A CN201510510898.1A CN201510510898A CN105016586A CN 105016586 A CN105016586 A CN 105016586A CN 201510510898 A CN201510510898 A CN 201510510898A CN 105016586 A CN105016586 A CN 105016586A
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China
Prior art keywords
pond
flows
pig farm
water
wastewater treatment
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CN201510510898.1A
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Chinese (zh)
Inventor
侯林杰
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兴安县森澳养殖有限公司
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Priority to CN201510510898.1A priority Critical patent/CN105016586A/en
Publication of CN105016586A publication Critical patent/CN105016586A/en

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Abstract

The invention provides a pig farm wastewater treatment process. Pig farm wastewater is discharged into an anaerobic pond through a pipeline to be fermented, water obtained after anaerobic fermentation flows into a sedimentation pond, supernate obtained after sedimentation flows into a hydrolysis pond, water discharged from the hydrolysis pond enters a first aerobiotic pond, water discharged from the first aerobiotic pond flows into a first anoxic pond, water discharged from the first anoxic pond flows into a second aerobiotic pond, water discharged from the second aerobiotic pond flows into a second anoxic pond, and finally water is discharged after sedimentation conducted in the sedimentation pond. All the processing units are of an up-flow type. By the adoption of wastewater treatment process, organic matter in high-concentration organic wastewater can be well degraded, the denitrification effect is good, and the quality of discharged water can meet the discharge requirement of GB18596-2001 Discharge standard of pollutants for livestock and poultry breeding.

Description

Pig farm wastewater treatment process
Technical field
The present invention relates to a kind of Sewage treatment systems, be specifically related to a kind of Pig farm wastewater treatment process.
Background technology
Pig farm wastewater mainly comprises pig urine, pig manure and pig house washing water.In this kind of sewage, organic concentration is high, suspended substance is many, ammonia-nitrogen content is high, and stink is large.At present, the sewage treatment process on pig farm mainly utilizes Anaerobic Microbiological Treatment Technology, and its advantage is the organic pollutant in efficient degradation water, but is difficult to the ammonia nitrogen in removing waste water.Denitrogenation generally comprises ammonification, nitrated, denitrification and assimilation Four processes, heterotrophic bacterium was converted into ammonia-state nitrogen organonitrogen before this, ammonia-state nitrogen is nitrite nitrogen nitrogen by autotrophic type oxidation by nitrobacteria, nitrite nitrogen is nitric nitrogen by autotrophic type oxidation by nitrobacteria again, and nitrite nitrogen and nitrate-nitrogen reduction are that gaseous nitrogen is removed from sewage by last heterotroph denitrifying bacteria.But biological denitrification process exists following contradiction: nitrifier is strict aerobic bacteria, and nitration reaction has needed sample environment, and denitrifying bacteria is facultative anaerobe, need to carry out under anaerobic environment.Secondly, nitration denitrification is also contradiction to organic existence, and Autotrophic nitrification bacterium, when large amount of organic exists, be not so good as aerobic heterotrophic bacterium, and anti-nitration reaction serves as electron donor to complete deoxidation process by needs organism to oxygen and nutraceutical competition.Above-mentioned contradiction has increased the weight of the denitrogenation difficulty of Wastewater from Pig Farm further.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of better degradation of organic substances and the good Pig farm wastewater treatment process of denitrification effect.
Technical scheme provided by the invention is a kind of Pig farm wastewater treatment process, Pig farm wastewater carries out fermentative processing by discharge of pipes to anaerobic pond, water outlet after anaerobically fermenting process flows into settling tank, supernatant liquor after precipitation process flows into hydrolytic tank, the water outlet of hydrolytic tank enters the first Aerobic Pond, the water outlet of the first Aerobic Pond flows into the first anoxic pond, the water outlet of the first anoxic pond flows into the second Aerobic Pond, the water outlet of the second Aerobic Pond flows into the second anoxic pond, after settling tank precipitation, Chinese effluent; Above-mentioned each processing unit is upflowing.
Pig farm wastewater is by carrying out anaerobically fermenting in discharge of pipes to anaerobic pond, and organic carbon, under the effect of anerobe, is changed into soil ulmin by pig farm excrement and urine waste, and amount reproduction anerobe, in sewage, BOD and COD degrades in a large number.
Sewage after anaerobically fermenting carries out settling tank, can SS in preliminary sedimentation sewage, alleviates follow-up Aerobic Pond and anoxic pond processing load.
Supernatant liquor after settling tank process enters hydrolytic tank, be dissolved organic matter by insoluble organic substance decomposing under a large amount of hydrolytic bacteria, the effect of acidifying bacterium, the small-molecule substance that biodegradable macromolecular substance is converted into readily biodegradable is fallen by difficulty, thus improve the biodegradability of sewage, for subsequent disposal establishes good basis.
Water outlet after hydrolytic tank process enters the first Aerobic Pond, and the DO controlling the first Aerobic Pond is 2 ~ 2.5mg/L, and ammonia-state nitrogen is converted into nitric nitrogen and nitrite nitrogen by nitrifier under aerobic condition.The water outlet of the first Aerobic Pond flows into the first anoxic pond, and the DO of the first anoxic pond is 0.1 ~ 0.5mg/L, and nitric nitrogen and nitrite nitrogen are carried out denitrification denitrogenation by the denitrifying bacterium in the first anoxic pond.The water outlet of the first anoxic pond flows into the second Aerobic Pond, and the DO of the second Aerobic Pond is 2 ~ 2.5mg/L, and the water outlet of the second Aerobic Pond flows into the second anoxic pond, and the DO of the second anoxic pond is 0.1 ~ 0.5mg/L.Through twice aerobic treatment and twice anaerobic treatment, and aerobic treatment and anaerobic treatment are carried out alternately, a total reflux passage can be formed, increase dwell time of sewage, extend sludge age, guarantee that nitrification and denitrification effectively carries out.
Water outlet after the second anoxic pond process, after settling tank precipitation, reduces further the SS in sewage, makes the sewage after processing can qualified discharge.
Compared with prior art, the degradation effect of Pig farm wastewater treatment process of the present invention to high concentrated organic wastewater is better, can not only organism effectively in degradation of sewage, can also play good denitrification effect, effluent index can reach GB18596-2001 " livestock and poultry breeding industry pollutant emission standard " emission request.
Embodiment
The present invention is further elaborated for following specific embodiment, but not as a limitation of the invention.
Embodiment 1
Pig farm wastewater carries out fermentative processing by discharge of pipes to anaerobic pond, water outlet after anaerobically fermenting process flows into settling tank, supernatant liquor after precipitation process flows into hydrolytic tank, the water outlet of hydrolytic tank enters the first Aerobic Pond, the DO of the first Aerobic Pond is 2mg/L, the water outlet of the first Aerobic Pond flows into the first anoxic pond, the DO of the first anoxic pond is 0.1mg/L, the water outlet of the first anoxic pond flows into the second Aerobic Pond, the DO of the second Aerobic Pond is 2mg/L, the water outlet of the second Aerobic Pond flows into the second anoxic pond, the DO of the second anoxic pond is 0.1mg/L, after settling tank precipitation, Chinese effluent, above-mentioned each processing unit is upflowing.
Embodiment 2
Pig farm wastewater carries out fermentative processing by discharge of pipes to anaerobic pond, water outlet after anaerobically fermenting process flows into settling tank, supernatant liquor after precipitation process flows into hydrolytic tank, the water outlet of hydrolytic tank enters the first Aerobic Pond, the DO of the first Aerobic Pond is 2.5mg/L, the water outlet of the first Aerobic Pond flows into the first anoxic pond, the DO of the first anoxic pond is 0.5mg/L, the water outlet of the first anoxic pond flows into the second Aerobic Pond, the DO of the second Aerobic Pond is 2.5mg/L, the water outlet of the second Aerobic Pond flows into the second anoxic pond, the DO of the second anoxic pond is 0.5mg/L, after settling tank precipitation, Chinese effluent, above-mentioned each processing unit is upflowing.
Sewage treatment process of the present invention is applied to the excrement and urine waste process on large-scale pig farm, Xingan County, Guilin City, Inlet and outlet water water quality monitoring (WQM) result is as following table:
Inlet and outlet water water quality monitoring (WQM) result

Claims (5)

1. Pig farm wastewater treatment process, it is characterized in that: Pig farm wastewater carries out fermentative processing by discharge of pipes to anaerobic pond, water outlet after anaerobically fermenting process flows into settling tank, supernatant liquor after precipitation process flows into hydrolytic tank, and the water outlet of hydrolytic tank enters the first Aerobic Pond, and the water outlet of the first Aerobic Pond flows into the first anoxic pond, the water outlet of the first anoxic pond flows into the second Aerobic Pond, the water outlet of the second Aerobic Pond flows into the second anoxic pond, after settling tank precipitation, and Chinese effluent; Above-mentioned each processing unit is upflowing.
2. Pig farm wastewater treatment process according to claim 1, is characterized in that: the DO of the first Aerobic Pond is 2 ~ 2.5mg/L.
3. Pig farm wastewater treatment process according to claim 1, is characterized in that: the DO of the first anoxic pond is 0.1 ~ 0.5mg/L.
4. Pig farm wastewater treatment process according to claim 1, is characterized in that: the DO of the second Aerobic Pond is 2 ~ 2.5mg/L.
5. Pig farm wastewater treatment process according to claim 1, is characterized in that: the DO of the second anoxic pond is 0.1 ~ 0.5mg/L.
CN201510510898.1A 2015-08-20 2015-08-20 Pig farm wastewater treatment process CN105016586A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540999A (en) * 2015-12-11 2016-05-04 凯天环保科技股份有限公司 Breeding wastewater integrated treatment device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101891347A (en) * 2010-07-15 2010-11-24 上海昊沧系统控制技术有限责任公司 Energy-saving enhanced nitrogen removal process
CN102531286A (en) * 2011-12-31 2012-07-04 浙江爱迪曼水科技有限公司 System for ecologically treating aquaculture wastewater
US20140124438A1 (en) * 2011-05-06 2014-05-08 Ariel-University Research And Development Company, Ltd Wastewater treatment method and device
CN104310714A (en) * 2014-11-03 2015-01-28 广西龙道环保工程有限责任公司 System for processing breeding and slaughtering sewage and technology for system
CN104326559A (en) * 2014-10-08 2015-02-04 环境保护部南京环境科学研究所 System for strengthening post-denitrification denitrogenation process
CN104402175A (en) * 2014-12-09 2015-03-11 重庆甘泰环保设备有限公司 Biochemical treatment system for breeding waste water in pig farm

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101891347A (en) * 2010-07-15 2010-11-24 上海昊沧系统控制技术有限责任公司 Energy-saving enhanced nitrogen removal process
US20140124438A1 (en) * 2011-05-06 2014-05-08 Ariel-University Research And Development Company, Ltd Wastewater treatment method and device
CN102531286A (en) * 2011-12-31 2012-07-04 浙江爱迪曼水科技有限公司 System for ecologically treating aquaculture wastewater
CN104326559A (en) * 2014-10-08 2015-02-04 环境保护部南京环境科学研究所 System for strengthening post-denitrification denitrogenation process
CN104310714A (en) * 2014-11-03 2015-01-28 广西龙道环保工程有限责任公司 System for processing breeding and slaughtering sewage and technology for system
CN104402175A (en) * 2014-12-09 2015-03-11 重庆甘泰环保设备有限公司 Biochemical treatment system for breeding waste water in pig farm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105540999A (en) * 2015-12-11 2016-05-04 凯天环保科技股份有限公司 Breeding wastewater integrated treatment device

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Application publication date: 20151104