CN104291517B - The processing system of a kind of waste water of livestock poultry qualified discharge and processing method - Google Patents

The processing system of a kind of waste water of livestock poultry qualified discharge and processing method Download PDF

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Publication number
CN104291517B
CN104291517B CN201410421528.6A CN201410421528A CN104291517B CN 104291517 B CN104291517 B CN 104291517B CN 201410421528 A CN201410421528 A CN 201410421528A CN 104291517 B CN104291517 B CN 104291517B
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pond
level
processing
anaerobic
reactor
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CN104291517A (en
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白鑫
吴赛明
袁良平
叶晓红
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HANGZHOU QINGCHENG ENERGY ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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HANGZHOU QINGCHENG ENERGY ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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    • 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
    • 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
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2846Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
    • 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
    • C02F3/286Anaerobic digestion processes including two or more steps
    • 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
    • C02F3/30Aerobic and anaerobic processes
    • 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
    • C02F3/02Aerobic processes
    • C02F3/12Activated sludge processes
    • C02F3/1205Particular type of activated sludge processes
    • C02F3/121Multistep treatment
    • 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
    • C02F3/1215Combinations of activated sludge treatment with precipitation, flocculation, coagulation and separation of phosphates
    • 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
    • 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
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The present invention discloses processing method and the processing system of a kind of waste water of livestock poultry, comprises the following steps: high concentration poultry waste water carries out pre-treatment in pre-treatment pond;Poultry waste water after process enters one-level anaerobic reactor, ferments in continuous-stirring reactor, produces biogas;Entering secondary anaerobic reactor by outlet pipe after reaction, secondary anaerobic reactor is upflow anaerobic sludge blanket reactor, completes water distribution, aerogenesis and three phase separation wherein;Water outlet after process enters one-level biochemical treatment system and processes, solid-liquid separation after process;Supernatant after process enters secondary biochemical treatment system and processes.The present invention utilizes two-stage anaerobic reactor and constructs Two-Stage Biochemical processing system, efficient anaerobic fermentation and the aerobic operation of implementing waste water of livestock poultry process, thus realize while producing regenerative resource biogas, realize the qualified discharge to waste water of livestock poultry to process, selected materials reliable in quality, with low cost, energy efficiency is notable, energy-conserving and environment-protective.

Description

The processing system of a kind of waste water of livestock poultry qualified discharge and processing method
Technical field
The invention belongs to sewage treatment area, particularly to processing method and the processing system of a kind of waste water of livestock poultry qualified discharge.
Background technology
The emission of livestock and poultry farms in scale the most only just carries out comprehensively utilizing or being directly discharged into water body through preliminary anaerobic treatment, is one of topmost polluter in agricultural pollution.Along with economic growth, within the period that future is longer, aquaculture continues development further, and the requirement of environment is more and more tighter.The outstanding problem such as lack, management system is unsound for economically feasible technology, feature in conjunction with livestock and poultry breeding industry, it may be necessary the experiment and demonstration of tackling problems in key technologies and technology, set up the high-performance bio treatment technology system of livestock and poultry farm emission, cut down, for what the Environmental capacity of livestock and poultry cultivation emission and pollution met, the technology mode providing economic and practical.
The excremental feature of livestock and poultry farm is that discharge capacity is big, organic concentration is high, SS content high, conventional sewage treatmentmethod is used to there will still likely be the problems such as biodegradability is poor, C/N is little, aerobic after-treatment system poor processing effect, therefore develop the waste water of livestock poultry treatment technology of high-efficiency and economic, reduce pollutant and the pollution of environment is had necessity very and urgency.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, a kind of two-stage anaerobic treatment technology is provided to combine Two-Stage Biochemical treatment technology, (wherein two-stage anaerobic treatment technology separate case application), fully Organic substance is converted into biogas, effectively process poultry waste water, effect is notable, reaches discharge standard, with low cost.
For achieving the above object, the present invention takes following technical proposals to realize:
The processing method of a kind of waste water of livestock poultry qualified discharge, comprises the following steps:
A. high concentration poultry waste water carries out pre-treatment in pre-treatment pond;
B. the poultry waste water after processing enters one-level anaerobic reactor, and continuous-stirring reactor ferments, and produces biogas;
C. entering secondary anaerobic reactor by outlet pipe after reaction, secondary anaerobic reactor is upflow anaerobic sludge blanket reactor, completes water distribution, aerogenesis and three phase separation wherein;
D. the biogas produced enters production and application after purifying;Water outlet after process enters one-level biochemical treatment system and processes, solid-liquid separation after process;
E. the supernatant after processing enters secondary biochemical treatment system and processes;
In described step d, one-level biochemical treatment system includes successively: flotation tank, A/O pond, first stage precipitation tank, A2/ O pond, second-level settling pond;Water outlet after process enters A/O pond after first passing through air-float technology, and the water outlet of A/O pond enters first stage precipitation tank, and supernatant after precipitation enters A2/ O pond, A2The water outlet of/O pond enters into solid-liquid separation in second-level settling pond.Further, the pre-treatment of described poultry waste water includes that the waterpower screen cloth of collecting-tank carries out solid-liquid separation and hydrolysis acidification pool carries out feeding precipitation process.
Further, in step d, one-level biochemical treatment system includes successively: flotation tank, A/O pond, first stage precipitation tank (sink pond), A2/ O pond, second-level settling pond;Water outlet after process enters A/O pond after first passing through air-float technology, and the water outlet of A/O pond enters first stage precipitation tank (second pond), and supernatant after precipitation enters A2/ O pond, A2The water outlet of/O pond enters into solid-liquid separation in second-level settling pond.
Further, A2/ O pond includes anaerobic pond, anoxic pond and Aerobic Pond, waste water carries out the release of phosphorus in mud in anaerobic pond, anti-nitration reaction is carried out in anoxic pond, in Aerobic Pond, organic pollution is degraded by microorganisms, ammonia nitrogen generation nitration reaction, the nitrate nitrogen and the nitrite nitrogen that produce are back to anoxic pond and carry out anti-nitration reaction, and the nitrogen of generation overflows.
Further, waste water time of staying in one-level anaerobic reactor is 3~6 days, preferably 5 days;The water outlet of one-level anaerobic reactor enters secondary anaerobic pond, and hydraulic detention time is 2~6 days, preferably 2.5 days.
Further, the heat energy reclaimed after being generated electricity by biogas combustion is used for heating of one-level anaerobic reactor so that it is maintain medium temperature condition, saves the energy.
Present invention also offers the processing system of a kind of waste water of livestock poultry qualified discharge, including one-level anaerobic reactor, two grades of feed tanks and secondary anaerobic reactor, wherein waterwater entrance connects one-level anaerobic reactor by pump, one-level anaerobic reactor connects two grades of feed tanks by outlet pipe, two grades of feed tank water outlet pumps connect secondary anaerobic reactor, the outlet pipe of secondary anaerobic reactor is connected with one-level biochemical treatment system, one-level biochemical treatment system outlet pipe connects secondary biochemical treatment system, secondary biochemical treatment system water outlet connects discharge pond, described one-level biochemical treatment system includes successively: flotation tank, A/O pond, first stage precipitation tank, A2/ O pond, second-level settling pond, wherein A2/ O pond includes anaerobic pond, anoxic pond and Aerobic Pond.
Further, secondary biochemical treatment system includes successively: contact-oxidation pool, coagulative precipitation tank, BAF BAF, sterilization pool.
Further, improving the structure in anaerobic reactor and system, set and heat coil pipe in described one-level anaerobic reactor, coil pipe height is the 2/5 of available depth, and coil pipe is 1/4~1/3 tank skin radius away from reactor wall;Described one-level anaerobic reactor peripheral hardware circulating pump, inside sets water distributor, and water distributor is dendritic distribution;Secondary anaerobic reactor water inlet is water distribution uniformity, sets water distributor in reactor, and water distributor is dendritic distribution.
Compared with prior art, the invention have the advantages that
The present invention carries out Two-Stage Biochemical process after waste water of livestock poultry is carried out efficient two-stage anaerobic fermentation again, organic substance is converted into regenerative resource biogas, turns waste into wealth, and reaches resource purpose, and volume gas production is at 0.35m3/ more than d;Needed for two-stage anaerobic technology, energy consumption only has the half of one-level anaerobic technology, decreases operating cost.
Two-Stage Biochemical processing system has its big advantage compared to other art process technologies: 1) comprehensive benefit is obvious: this technology takes into account environmental conservation, biomass energy exploitation and Development of Recycle Agriculture, has significant social benefit, source benefit and economic benefit;2) applied widely: livestock and poultry farm Excreta dissimilar, variable concentrations is had the strongest suitability;3) operational management is convenient: invest compared with province, energy consumption is relatively low, operating cost is low, convenient operation and management.
Further, by improving firsts and seconds anaerobic reactor structure, the productivity of biogas can be improved.
Further, by the appropriate design of Two-Stage Biochemical processing system, for the feature of poultry waste water, removal effect is good, with low cost.
Accompanying drawing explanation
Fig. 1 is the process route chart of the present invention.
Fig. 2 is present invention process schematic flow sheet.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.In addition, it is to be understood that after having read the content that the present invention lectures, the present invention can be made various changes or modifications by those skilled in the art, and these equivalent form of values fall within the application appended claims limited range equally.
Embodiment 1
Pig farm be most common be also bigger livestock and poultry farm, Pig dung and urine is representative in waste water of livestock poultry, the composition of all kinds of waste water of livestock poultry is the most roughly the same, therefore the process present invention for other waste water of livestock poultry is equally applicable, and therefore in the present embodiment, waste water of livestock poultry selects piggery wastewater.
Wherein farm animal excrement, including feces of livestock and poultry, urine;Waste water of livestock poultry, including poultry urine, portion of stool and flushing water.
Fig. 1 is the process route chart of the present invention, and Fig. 2 is present invention process schematic flow sheet.Visible in conjunction with Fig. 1 and Fig. 2, the concrete step that processes includes:
1) waste water of livestock poultry main parameter after waterpower screen cloth and hydrolysis acidification pool carry out pre-treatment is: COD 20000mg/L, influent load 8kg/ (m3·d).CSTR reactor dischargeable capacity is 1200m3, the pH of control CSTR reactor is at 6.5-7.5, and heat cycles water tank control temperature is between 30-35 DEG C, and daytime is every stirring in 4 hours once.Stirring 20 minutes, hydraulic detention time 5 days every time.After testing, the stable yield of biogas every day is at 500m3
2) CSTR water outlet enters UASB reactor after two grades of feed tank short stays.Proceed degraded by the UASB reactor that is lifted into of pump, by the three phase separator of UASB, water, gas, mud are separated.The water inlet flow velocity controlling UASB during reaction is 2m/s.By detection, average biogas output is 800m3/ d, COD clearance reaches about 70%.
3) proving through example detection, the average removal rate of COD is more than 80% after CSTR and UASB two-stage anaerobic for waste water of livestock poultry, and aerogenesis meets stable at 0.35m3/(m3D) more than.
4) one-level biochemical treatment system: entering back in A/O pond after first passing through air-float technology, A/O pond is divided into anaerobic pond, Aerobic Pond.Anaerobic pond predominantly biological phosphate-eliminating and set, sewage mixes with the mud of backflow at this, and carries out the release of phosphorus in mud;The nitrate nitrogen produced in Aerobic Pond and nitrite nitrogen are back in anoxic pond Denitrification, generate nitrogen effusion, reach denitrogenation purpose.The water outlet of A/O pond enters first stage precipitation tank.Supernatant after precipitation enters into A2In/O pond.A2/ O pond is divided into anaerobic pond, anoxic pond, Aerobic Pond.Anaerobic pond predominantly biological phosphate-eliminating and set, sewage mixes with the mud of backflow at this, and carries out the release of phosphorus in mud;Anoxic pond is substantially carried out anti-nitration reaction, and the nitrate nitrogen produced in Aerobic Pond and nitrite nitrogen are back in anoxic pond Denitrification, generates nitrogen effusion, reaches denitrogenation purpose.Meanwhile, in Aerobic Pond, organic pollution major part microorganism under aerobic condition is degraded, the nitration reaction of ammonia nitrogen generation simultaneously.A2The water outlet of/O pond enters into solid-liquid separation in second pond.
5) secondary biochemical treatment system: second pond supernatant enters in contact-oxidation pool, remove the organic pollution in sewage further, its water outlet enters in coagulative precipitation tank, remove float and particulate matter in sewage further, subsequently into BAF BAF so that final outflow water qualified discharge.
When this method is implemented, the anaerobic methane production mud that in CSTR reactor, inoculation has been tamed, piggery wastewater enters CSTR, controls COD influent load at 10kgCOD/ (m3D), this pig farm uses blister excrement technique, and the process water yield is 400m3/ d, influent COD 20000mg/L.The concrete data of the treatment effect in sewage disposal each stage are as shown in table 1:
The treatment effect table in table 1 sewage disposal each stage

Claims (7)

1. the processing method of a waste water of livestock poultry qualified discharge, it is characterised in that the treating method comprises following steps:
A. high concentration poultry waste water carries out pre-treatment in pre-treatment pond;
B. the poultry waste water after processing enters one-level anaerobic reactor, and continuous-stirring reactor ferments, and produces biogas;
C. entering secondary anaerobic reactor by outlet pipe after reaction, secondary anaerobic reactor is up-flow anaerobic sludge blanket Reactor, completes water distribution, aerogenesis and three phase separation wherein;
D. the biogas produced enters production and application after purifying;Water outlet after process enters one-level biochemical treatment system and enters Row processes, solid-liquid separation after process;
E. the supernatant after processing enters secondary biochemical treatment system and processes;
In described step d, one-level biochemical treatment system includes successively: flotation tank, A/O pond, first stage precipitation tank, A2/ O pond, second-level settling pond;Water outlet after process enters A/O pond, A/O after first passing through air-float technology Pond water outlet enters first stage precipitation tank, and supernatant after precipitation enters A2/ O pond, A2The water outlet of/O pond enters Solid-liquid separation in second-level settling pond.
Processing method the most according to claim 1, it is characterised in that set in described one-level anaerobic reactor and heat dish Pipe, coil pipe height is the 2/5 of available depth, and coil pipe is 1/4~1/3 tank skin radius away from reactor wall.
Processing method the most according to claim 1, it is characterised in that described one-level anaerobic reactor peripheral hardware circulating pump, Inside setting water distributor, water distributor is dendritic distribution.
Processing method the most according to claim 1, it is characterised in that secondary anaerobic reactor water inlet is water distribution uniformity, Setting water distributor in reactor, water distributor is dendritic distribution.
Processing method the most according to claim 1, it is characterised in that A2/ O pond includes that anaerobic pond, anoxic pond are become reconciled Oxygen pond, waste water carries out the release of phosphorus in mud in anaerobic pond, carries out anti-nitration reaction in anoxic pond, good In oxygen pond, organic pollution is degraded by microorganisms, ammonia nitrogen generation nitration reaction, the nitrate nitrogen of generation and nitrous acid Salt nitrogen is back to anoxic pond and carries out anti-nitration reaction, and the nitrogen of generation overflows.
6. a waste water of livestock poultry two-stage anaerobic produces the processing system of biogas, it is characterised in that include one-level anaerobic reactor, Two grades of feed tanks and secondary anaerobic reactor, wherein waterwater entrance connects one-level anaerobic reactor, one-level by pump Anaerobic reactor connects two grades of feed tanks by outlet pipe, and two grades of feed tank water outlet pumps connect secondary anaerobic reaction Device, the outlet pipe of secondary anaerobic reactor is connected with one-level biochemical treatment system, one-level biochemical treatment system water outlet Pipe connects secondary biochemical treatment system, and secondary biochemical treatment system water outlet connects discharge pond, at described one-level biochemistry Reason system includes successively: flotation tank, A/O pond, first stage precipitation tank, A2/ O pond, second-level settling pond.
Processing system the most according to claim 6, it is characterised in that secondary biochemical treatment system includes successively: connect Touch oxidation pond, coagulative precipitation tank, BAF BAF, sterilization pool.
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CN201610510425.6A CN106430562B (en) 2014-08-25 2014-08-25 A kind of processing method of poultry discharged wastewater met the national standard
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CN106430562B (en) * 2014-08-25 2019-10-01 杭州清城能源环保工程有限公司 A kind of processing method of poultry discharged wastewater met the national standard
CN105384302A (en) * 2015-09-16 2016-03-09 徐雪祥 Aquaculture wastewater processing system and method thereof
CN106082531A (en) * 2016-06-21 2016-11-09 福建禹环境科技有限公司 A kind of processing method of breeding wastewater
CN106348486A (en) * 2016-08-24 2017-01-25 江苏众胜灭菌设备科技有限公司 Method for recovering nitrogenous raw materials in sewage
CN107082535A (en) * 2017-05-31 2017-08-22 安徽永志环能科技有限公司 Livestock and poultry cultivation night soil biological treatment utilization process
CN108640453A (en) * 2018-05-09 2018-10-12 惠州市百欧佳科技有限公司 A kind of simultaneous water quality reaching standard process of poultry waste nutrient recycling
CN108862860A (en) * 2018-07-09 2018-11-23 许春燕 A kind of sewage-treatment plant of Automatic Control
CN108862769A (en) * 2018-07-09 2018-11-23 胡良峰 A kind of zero-emission environment-friendly feed production sewage treatment device
CN108821521A (en) * 2018-08-23 2018-11-16 温州正城建设有限公司 Multistage settling gardens regeneration effluent system
CN109111038A (en) * 2018-09-10 2019-01-01 浩源皮业(台山)有限公司 A kind of leather waste water efficient process system
CN110054346A (en) * 2019-02-27 2019-07-26 浙江美保龙种猪育种有限公司 A kind of method of lifting sewage processing capacity

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CN101343133B (en) * 2008-08-26 2010-06-02 浙江林学院 Comprehensive treatment method for wastewater of livestock and poultry cultivation
CN102336497A (en) * 2010-07-27 2012-02-01 辽宁科技大学 Energy-efficient method for enhanced denitrification and decarburization of waste water
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CN106430562B (en) * 2014-08-25 2019-10-01 杭州清城能源环保工程有限公司 A kind of processing method of poultry discharged wastewater met the national standard

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