CN106746215A - A kind of processing method of pig farm waste water - Google Patents

A kind of processing method of pig farm waste water Download PDF

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Publication number
CN106746215A
CN106746215A CN201611185842.4A CN201611185842A CN106746215A CN 106746215 A CN106746215 A CN 106746215A CN 201611185842 A CN201611185842 A CN 201611185842A CN 106746215 A CN106746215 A CN 106746215A
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Prior art keywords
waste water
treatment
sludge
water
tank
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CN201611185842.4A
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Chinese (zh)
Inventor
吴良志
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怀宁县森源生态养殖有限公司
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Priority to CN201611185842.4A priority Critical patent/CN106746215A/en
Publication of CN106746215A publication Critical patent/CN106746215A/en

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    • 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
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • 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
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • 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
    • C02F1/50Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
    • 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
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
    • 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
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • 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
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • 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
    • C02F3/12Activated sludge processes
    • C02F3/1205Particular type of activated sludge 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
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1236Particular type of activated sludge installations
    • C02F3/1263Sequencing batch reactors [SBR]
    • 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
    • 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 present invention relates to a kind of processing method of pig farm waste water, belong to technical field of waste water processing, comprise the following steps:Wastewater collection, Wastewater Pretreatment, regulating water quality, flocculation treatment, hydrolysis acidification treatment, fermentation process, Aerobic Process for Treatment, secondary flocculation treatment, disinfect and Treatment of Sludge.A flocculation treatment is larger to the clearance of each pollutant in handling process of the invention, can be subsequent fermentation and sbr reactor pollution abatement load;Hydrolysis acidification increases substantially the biodegradability of waste water and degradation speed, reduces the energy consumption of reaction time and treatment;Process operations of the invention are simple, with good treatment effect and water stabilization, effluent quality reaches discharge standard;In technique of the invention, centralized collection and treatment are carried out to sludge, carry out recycling.

Description

A kind of processing method of pig farm waste water
Technical field
The present invention relates to technical field of waste water processing, and in particular to a kind of processing method of pig farm waste water.
Background technology
With the development of industrial or agricultural, aquaculture develops towards intensive and batch production direction.Live pig large-scale cultivation ratio Example is continuously increased.The high-concentration waste water that aquaculture is produced, in the mineral element, heavy metal, antibiotic, the excrement that are added in feed Microorganism etc. all can pollute and endanger to environment, show all many-sides:(1) to the pollution of air:Contain ammonia in excrement The pernicious gases such as gas, hydrogen sulfide, amine, the carboritride contained in undigested urine can decompose generation under anaerobic Foul gas, produces humans and animals uncomfortable;(2) to the pollution of water body:Piggery wastewater contains substantial amounts of polluter, is High load capacity pollutant effluents, causes earth's surface water eutrophication, and aquatile is gradually dead so that water body cannot again be purified and recovered; The leachings such as nitrogen, phosphorus and BOD in the fecaluria of pig farm are very strong, if do not kept properly, in rainy season as rainwash and diafiltration enter Underground water so that the NO3-N and NO2-N content of underground water is raised, final water quality deterioration, jeopardizes neighbouring drinking water;(3) Pollution to soil:After breeding wastewater touches soil, can block interstices of soil, cause water penetration, gas permeability to be deteriorated, soil Generation is hardened, salt dampization, finally endangers soil, unfavorable to plant growth, causes crop production reduction;(4) to humans and animals health Harm:Pollution of the piggery wastewater to air can be by respiratory tract, and the pollution to water body can be drunk by people to water resource, right The pollution of soil and crop finally jeopardizes the health of the mankind by food chain.The pollution of pig industry has not been a ring for part Border pollution problem, but an environmental problem for influence large watershed.
The content of the invention
For existing issue, it is an object of the invention to provide a kind of processing method of pig farm waste water, effectively solve because of pig The pollution problem that fecaluria waste water brings.
In order to realize the purpose of the present invention, adopt the following technical scheme that:
A kind of processing method of pig farm waste water, comprises the following steps:
(1) wastewater collection:The waste water unification on pig farm is incorporated into collecting-tank, and collecting-tank is aerated;
(2) Wastewater Pretreatment:Waste water in collecting-tank is introduced into grid pond, coarse filtration is carried out;
(3) regulating water quality:The waste water that will be processed by step (2) introduces regulating reservoir, to conditioning agent is added in regulating reservoir, adjusts The pH for saving waste water is 6-8.2;
(4) flocculation treatments:Waste water in step (3) is incorporated into reaction tank, is entered to flocculant is added in reaction tank The treatment of row flocculation sediment, sludge concentration tank is introduced by sediment;
(5) hydrolysis acidification treatment:The waste water processed by step (4) is incorporated into hydrolysis acidification pool, the residence time in water It is 7 hours;
(6) fermentation process:The waste water processed by step (5) is incorporated into fermentation vat, fermentation time is 20-24h, to this The biogas that process is produced is collected, and the sludge part of generation is back to hydrolysis acidification pool, and part introduces sludge concentration tank;
(7) Aerobic Process for Treatment:The waste water processed by step (6) is pumped into sbr reactor device, aeration time is 8-10h, One reaction time is 12h, reacts the sludge for producing and is incorporated into sludge concentration tank;
(8) secondary flocculation treatment:To be incorporated into flocculation basin by the waste water of Aerobic Process for Treatment, add flocculant, and carry out Stirring, precipitation, supernatant are introduced in sterilization pool, and sediment is introduced into sludge concentration tank;
(9) disinfect:Ozone generator is set in sterilization pool, is carried out disinfection using ozone, rear discharge up to standard;
(10) Treatment of Sludge:The sludge that will be collected in sludge concentration tank is compressed, is dehydrated, recycle after desiccation.
Preferably, the conditioning agent in step (3) is sodium hydroxide solution.
Preferably, the hydraulic detention time of regulating reservoir is 5 hours in step (3).
Preferably, the flocculant in step (4) and step (8) is aluminium polychloride, and addition is every liter of water addition 5-8g Aluminium polychloride.
Preferably, elastomeric material is installed in hydrolysis acidification pool.
Compared with prior art, beneficial effects of the present invention:
Waste water is carried out grid treatment by handling process of the invention first, removes floating object and suspension in waste water, so By overregulating water quality, flocculation, hydrolysis acidification, fermentation, aerobic, secondary flocculation and the operation such as disinfecting, water outlet is finally reached Standard.One time flocculation treatment is larger to the clearance of each pollutant, can be that subsequent fermentation treatment and sbr reactor pollution abatement are born Lotus;Hydrolysis acidification can reduce COD total amounts to a certain extent, and biodegradable larger molecular organicses degraded will be difficult in sewage It is the small organic molecule being readily biodegradable, increases substantially the biodegradability of waste water and degradation speed, when reduces reaction Between and treatment energy consumption;Elastic filler is installed in hydrolysis acidification pool, the waste water to stirring carries out waterpower cutting, makes suspended state Sludge be sufficiently mixed with water, while for the growth of hydrolysis acidification bacterium provides advantage;The biogas that fermentation process is produced can be with For producing and living, sbr reactor can carry out the operation of orderly and interval, and can carry out mechanization management, be easy to operation;This The process operations of invention are simple, with good treatment effect and water stabilization, the waste water COD after sbr reactor treatment is dense It is 65-83mg/L to spend, and ammonia nitrogen concentration is 7-15mg/L, and total phosphorus concentration is 3.4-5.2mg/L, and effluent quality reaches discharge standard; In technique of the invention, centralized collection and treatment are carried out to sludge, carry out recycling.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations Example.
Embodiment 1
A kind of processing method of pig farm waste water, comprises the following steps:
(1) wastewater collection:The waste water unification on pig farm is incorporated into collecting-tank, and collecting-tank is aerated;
(2) Wastewater Pretreatment:Waste water in collecting-tank is introduced into grid pond, coarse filtration is carried out;
(3) regulating water quality:The waste water that will be processed by step (2) introduces regulating reservoir, to adding NaOH in regulating reservoir Solution, the pH for adjusting waste water is 7, and the hydraulic detention time of regulating reservoir is 5 hours;
(4) flocculation treatments:Waste water in step (3) is incorporated into reaction tank, to adding polyaluminium in reaction tank Aluminium carries out flocculation sediment treatment, and addition is every liter of water addition 8g aluminium polychloride, and sediment is introduced into sludge concentration tank;
(5) hydrolysis acidification treatment:The waste water processed by step (4) is incorporated into hydrolysis acidification pool, the residence time in water It is 7 hours, elastomeric material is installed in hydrolysis acidification pool;
(6) fermentation process:The waste water processed by step (5) is incorporated into fermentation vat, fermentation time is 20h, to this mistake The biogas that journey is produced is collected, and the sludge part of generation is back to hydrolysis acidification pool, and part introduces sludge concentration tank;
(7) Aerobic Process for Treatment:The waste water processed by step (6) is pumped into sbr reactor device, aeration time is 8h, one Individual reaction time is 12h, and the waste water COD concentration after sbr reactor treatment is 75mg/L, and ammonia nitrogen concentration is 9mg/L, and total phosphorus concentration is 4.6mg/L, reacts the sludge for producing and is incorporated into sludge concentration tank;
(8) secondary flocculation treatment:To be incorporated into flocculation basin by the waste water of Aerobic Process for Treatment, addition aluminium polychloride is carried out Flocculation sediment treatment, addition is every liter of water addition 5g aluminium polychloride, and is stirred, precipitates, and supernatant introduces sterilization pool It is interior, sediment is introduced into sludge concentration tank;
(9) disinfect:Ozone generator is set in sterilization pool, is carried out disinfection using ozone, rear discharge up to standard;
(10) Treatment of Sludge:The sludge that will be collected in sludge concentration tank is compressed, is dehydrated, recycle after desiccation.
Embodiment 2
A kind of processing method of pig farm waste water, comprises the following steps:
(1) wastewater collection:The waste water unification on pig farm is incorporated into collecting-tank, and collecting-tank is aerated;
(2) Wastewater Pretreatment:Waste water in collecting-tank is introduced into grid pond, coarse filtration is carried out;
(3) regulating water quality:The waste water that will be processed by step (2) introduces regulating reservoir, to adding NaOH in regulating reservoir Solution, the pH for adjusting waste water is 7.8, and the hydraulic detention time of regulating reservoir is 5 hours;
(4) flocculation treatments:Waste water in step (3) is incorporated into reaction tank, to adding polyaluminium in reaction tank Aluminium carries out flocculation sediment treatment, and addition is every liter of water addition 7.5g aluminium polychloride, and sediment is introduced into sludge concentration tank;
(5) hydrolysis acidification treatment:The waste water processed by step (4) is incorporated into hydrolysis acidification pool, the residence time in water It is 7 hours, elastomeric material is installed in hydrolysis acidification pool;
(6) fermentation process:The waste water processed by step (5) is incorporated into fermentation vat, fermentation time is 24h, to this mistake The biogas that journey is produced is collected, and the sludge part of generation is back to hydrolysis acidification pool, and part introduces sludge concentration tank;
(7) Aerobic Process for Treatment:The waste water processed by step (6) is pumped into sbr reactor device, aeration time is 10h, one Individual reaction time is 12h, and the waste water COD concentration after sbr reactor treatment is 82mg/L, and ammonia nitrogen concentration is 13mg/L, total phosphorus concentration It is 3.7mg/L, reacts the sludge for producing and be incorporated into sludge concentration tank;
(8) secondary flocculation treatment:To be incorporated into flocculation basin by the waste water of Aerobic Process for Treatment, addition aluminium polychloride is carried out Flocculation sediment treatment, addition is every liter of water addition 6g aluminium polychloride, and is stirred, precipitates, and supernatant introduces sterilization pool It is interior, sediment is introduced into sludge concentration tank;
(9) disinfect:Ozone generator is set in sterilization pool, is carried out disinfection using ozone, rear discharge up to standard;
(10) Treatment of Sludge:The sludge that will be collected in sludge concentration tank is compressed, is dehydrated, recycle after desiccation.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (5)

1. a kind of processing method of pig farm waste water, it is characterised in that comprise the following steps:
(1) wastewater collection:The waste water unification on pig farm is incorporated into collecting-tank, and collecting-tank is aerated;
(2) Wastewater Pretreatment:Waste water in collecting-tank is introduced into grid pond, coarse filtration is carried out;
(3) regulating water quality:The waste water that will be processed by step (2) introduces regulating reservoir, and to conditioning agent is added in regulating reservoir, regulation is useless The pH of water is 6-8.2;
(4) flocculation treatments:Waste water in step (3) is incorporated into reaction tank, is wadded a quilt with cotton to flocculant is added in reaction tank Solidifying precipitation process, sludge concentration tank is introduced by sediment;
(5) hydrolysis acidification treatment:The waste water processed by step (4) is incorporated into hydrolysis acidification pool, the residence time is 7 small in water When;
(6) fermentation process:The waste water processed by step (5) is incorporated into fermentation vat, fermentation time is 20-24h, to this process The biogas of generation is collected, and the sludge part of generation is back to hydrolysis acidification pool, and part introduces sludge concentration tank;
(7) Aerobic Process for Treatment:The waste water processed by step (6) is pumped into sbr reactor device, aeration time is 8-10h, one Reaction time is 12h, reacts the sludge for producing and is incorporated into sludge concentration tank;
(8) secondary flocculation treatment:To be incorporated into flocculation basin by the waste water of Aerobic Process for Treatment, addition flocculant, and be stirred, Precipitation, supernatant is introduced in sterilization pool, and sediment is introduced into sludge concentration tank;
(9) disinfect:Ozone generator is set in sterilization pool, is carried out disinfection using ozone, rear discharge up to standard;
(10) Treatment of Sludge:The sludge that will be collected in sludge concentration tank is compressed, is dehydrated, recycle after desiccation.
2. a kind of processing method of pig farm waste water according to claim 1, it is characterised in that the regulation in step (3) Agent is sodium hydroxide solution.
3. a kind of processing method of pig farm waste water according to claim 1, it is characterised in that regulating reservoir in step (3) Hydraulic detention time be 5 hours.
4. the processing method of a kind of pig farm waste water according to claim 1, it is characterised in that step (4) and step (8) In flocculant be aluminium polychloride, addition is every liter of water addition 5-8g aluminium polychlorides.
5. the processing method of a kind of pig farm waste water according to claim 1, it is characterised in that installed in hydrolysis acidification pool Elastomeric material.
CN201611185842.4A 2016-12-20 2016-12-20 A kind of processing method of pig farm waste water CN106746215A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107188340A (en) * 2017-07-20 2017-09-22 重庆阳正环保科技股份有限公司 A kind of high-concentration culture waste water handling process

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CN103435224A (en) * 2013-08-21 2013-12-11 江苏鑫林环保设备有限公司 Waste water treatment technology for livestock breeding
CN105271610A (en) * 2015-06-18 2016-01-27 北京建研环保设备有限公司 Comprehensive processing process of culturing farm cow dung waste water
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107188340A (en) * 2017-07-20 2017-09-22 重庆阳正环保科技股份有限公司 A kind of high-concentration culture waste water handling process

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