CN106830542A - UASB two-stage A/O coagulating treatments pig farm biogas slurry system - Google Patents

UASB two-stage A/O coagulating treatments pig farm biogas slurry system Download PDF

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Publication number
CN106830542A
CN106830542A CN201710120230.5A CN201710120230A CN106830542A CN 106830542 A CN106830542 A CN 106830542A CN 201710120230 A CN201710120230 A CN 201710120230A CN 106830542 A CN106830542 A CN 106830542A
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sludge
pond
uasb
biogas slurry
coagulating
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万金保
付煜
余郭龙
刘峰
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Nanchang University
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Nanchang University
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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
    • 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
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • 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
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/76Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/105Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/16Nitrogen compounds, e.g. ammonia
    • 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
    • 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
    • C02F3/30Aerobic and anaerobic 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

A kind of UASB two-stages A/O coagulating treatments pig farm biogas slurry system, consisting of:Regulating reservoir, UASB reactors, one-level anoxic pond, one-level Aerobic Pond, two grades of anoxic ponds, two grades of Aerobic Ponds, medium sediment pool, coagulating basin, second pond, sterilization pool, effluent standards mouthful are sequentially connected;UASB reactors, sludge concentration tank, plate and frame filter press are sequentially connected;Medium sediment pool, second pond and coagulating basin are connected with sludge concentration tank, the sludge in three ponds is entered sludge concentration tank.Significantly, treatment effect stabilization, capacity of resisting impact load is strong, and simple to operate, operating cost is low for the system Nitrogen/Phosphorus Removal, and pig farm biogas slurry meets by effluent index after group technology treatment《Livestock and poultry breeding industry pollutant emission standard》(GB 18596‑2001)It is required that.

Description

UASB- two-stage A/O- coagulating treatments pig farm biogas slurry system
Technical field
The present invention relates to improveing upflow anaerobic sludge blanket reactor (UASB), two-stage anoxic/aerobic (two-stage A/O) and mixing Solidifying integrated treatment pig farm biogas slurry system, belongs to environmentally friendly water-treatment technology field.
Background technology
In recent years, China's scale animal and poultry cultivation industry is developed rapidly, promote increase income and uplift the people's living standard it is same When produce serious environmental pollution.Livestock and poultry breeding industry exhaust emission has turned into one of principal element of China's Rural Plane Source Pollution, Also the third-largest pollution sources after industrial wastewater and sanitary sewage are turned into.Statistics shows that national livestock and poultry breeding industry was arranged in 2010 The COD put(COD)1268.26 ten thousand t are reached, the waste water of the wherein high concentration that Intensive Farm of Pig Raising is produced is accounted for Main status.At this stage, the Large-scale pig farm waste water treatment of China has been basically completed Anaerobic Treatment, that is, complete methane-generating pit etc. The construction of anaerobism structures.Acidifying and methanation two benches by anaerobism, the organic matter of piggery wastewater high concentration are substantially achieved Control, eliminates more than 70% COD and has killed most pathogenic bacteria.But still contain in a large amount of biogas slurries produced after fermentation There are the rich nutritive materials such as the COD and a large amount of ammonia, phosphorus of higher concentration, if do not processed further, directly discharge the life to periphery State environment forms serious destruction.
At present, kinds of processes have developed to pig farm biogas slurry treatment both at home and abroad, mainly there is Aerobic Process for Treatment, Anaerobic Treatment, nature Treatment and also Tian Zuofei etc..Pig farm biogas slurry still falls within the organic wastewater of ammonia nitrogen high, and direct Aerobic Process for Treatment, energy consumption is excessive, running cost With height.Suitable scheme should be aerobic combined treatment process after first anaerobism, but still lack at this stage economical rationality, technology into Ripe group technology processes such waste water.Therefore, a kind of good denitrogenation and dephosphorization effect, investment and operating cost are found low, because of ground system Preferably, operational administrative is simple, and can produce the group technology of certain economy and environmental benefit, is caused to solving large scale of pig farm waste water Problem of environmental pollution it is particularly important.
The content of the invention
The purpose of the present invention is directed to the pollutants, biogas slurry water such as COD, nitrogen, phosphorus, suspension that pig farm biogas slurry contains high concentration Matter is big with time fluctuation, and carbon-nitrogen ratio serious unbalance, biodegradability is poor, the features such as intractability is big, it is proposed that a kind of UASB- two-stages A/O- coagulation integrated treatments pig farm biogas slurry system, pig farm biogas slurry meets by effluent index after group technology treatment《Livestock and poultry Aquaculture pollutant emission standard》(GB 18596-2001)It is required that.
Realize the technical scheme is that:Using UASB reactors, one-level anoxic/aerobic(One-level A/O), two grades lack Oxygen/aerobic(Two grades of A/O)With coagulation quaternity integrated treatment pig farm biogas slurry.Pig farm biogas slurry is finally from sterilization pool through effluent standard Mouth outflow, reaches discharge standard.
The system is constituted:Regulating reservoir, UASB reactors, one-level anoxic pond, one-level Aerobic Pond, two grades of anoxic ponds, two Level Aerobic Pond, medium sediment pool, coagulating basin, second pond, sterilization pool, effluent standard mouthful are sequentially connected;UASB, sludge concentration tank, sheet frame Filter press is sequentially connected;Medium sediment pool, second pond and coagulating basin are connected with sludge concentration tank, the sludge in three ponds is entered sludge condensation Pond;
The system work process is as follows:
(1)Pig farm biogas slurry carries out equilibrium after being collected by pipe network in flowing into regulating reservoir certainly after coarse rack removal bulky grain excrement slag Water quality and water;
(2)Regulating reservoir water outlet is promoted to by elevator pump and Anaerobic Treatment is carried out in UASB reactors, biogas slurry by secondary hydrolysis acidification, Organic concentration is greatly lowered, mitigates the treatment load of system subsequent technique;
(3)The water outlet of UASB reactors from two-stage A/O biological treatment systems are flowed into, is gone here and there before and after two sets of A/O techniques under gravity Connection, aerobic section sets reflux pump by part mixed-liquor return to respective anoxic section;First order A/O uses activated sludge process work Skill, by shortening sludge sludge age and hydraulic detention time, promotes polyP bacteria growth, finally using spoil disposal method dephosphorization;Second level A/O Using bio membrane process, sludge sludge age is extended, be conducive to the breeding of generation time denitrifier long, promote denitrification effect;
(4)Two-stage A/O pond water outlets carry out separation of solid and liquid from medium sediment pool is flowed into using gravitational settling effect, and further removal suspends The biomembrane come off in thing and FEOL, ensures effluent quality;
(5)Medium sediment pool supernatant liquor overflow enters coagulating basin, and to adding appropriate PAC, PAM and dephosphorization agent white lime in coagulating basin The suspension in waste water is set to form flco Deng medicament, while further reducing the concentration of COD and TP;
(6)Supernatant enters sterilization pool after coagulating basin water outlet carries out separation of solid and liquid into second pond, adds and is disappeared into NaClO Poison, kills Escherichia coli, malignant bacteria and fractionated viral.It is final to ensure that water outlet meets the requirements qualified discharge;
(7)Sludge concentration tank mainly collects regulating reservoir, UASB reactors, medium sediment pool, coagulating basin and second pond in group technology Excess sludge, by plate and frame filter press reduction moisture percentage in sewage sludge after sludge condensation, then dirt cake outward transport carries out treatment disposal.
The advantage of the invention is that:
Improved UASB reactor is to be additionally arranged outer circulation sludge refluxing apparatus on the basis of traditional UASB reactors, it is ensured that detested Oxygen sludge is not lost in.Increase the liquid rate of climb in reactor by flowing back simultaneously, improve anaerobic fermentation efficiency, shorten waterpower Residence time(Improvement UASB utility model patents number are 2014200062588).Additionally, the supporting novel cloth mud device of reactor And water-locator, wherein cloth mud device avoids returned sludge and is directly entered reactor and cause local sludge concentration too high, destroys anaerobism The activity of granule sludge(Utility model patent number 2014200034959), water-locator then plays a part of water distribution uniformity(It is practical new The type patent No. 2014200055279).By most organic pollution in the removable waste water of UASB, reduce water quality to follow-up The impact load of technique, it is ensured that subsequent biological treatment technique is normally run.
Two-stage A/0 technique tandems, are respectively adopted activated sludge process dephosphorization and biomembrance process denitrogenation, for polyP bacteria and The different multiplication characteristic of denitrifier, is run by controlling sludge sludge age, hydraulic detention time, reflux ratio of aerobic section mixed liquor etc. Parameter is so as to overcome traditional A2/ O carbon sources present in denitrogenation dephosphorizing process are not enough, nitrate is disturbed, sludge sludge age is difficult to The problems such as taking into account the generation time of denitrifier and polyP bacteria, it is achieved thereby that efficient denitrogenation dephosphorizing.
Coagulating basin has added coagulant PAC, PAM and dephosphorization agent Ca (OH)2So that coagulating sedimentation and chemical dephosphorization are formd Synergy, improves pollutant removal.
Waste water treatment process operating cost is low, treatment effect stabilization, is adapted to large-scale pig farm wastewater treatment and Technique Popularizing.
Biogas slurry is by after group technology treatment, final outflow water water quality is better than《Livestock and poultry breeding industry pollutant emission standard》(GB 18596-2001)It is required that.
Brief description of the drawings
Fig. 1 is UASB- two-stage A/O- coagulating treatments pig farm biogas slurry system schematic.
Specific embodiment
System of the present invention is constituted:Regulating reservoir, UASB reactors, one-level anoxic pond, one-level Aerobic Pond, two grades of anoxics Pond, two grades of Aerobic Ponds, medium sediment pool, coagulating basin, second pond, sterilization pool, effluent standards mouthful are sequentially connected;UASB reactors, sludge Concentration basin, plate and frame filter press are sequentially connected;Medium sediment pool, second pond and coagulating basin are connected with sludge concentration tank, make the sludge in three ponds Enter sludge concentration tank;
Treating capacity is 100m3The pig farm biogas slurry of/d, biogas slurry water quality:CODCr 2850~3000mg/L, NH3750~850mg/ of-N 950~1300mg/L of L, TP 30~40mg/L, SS.Pig farm biogas slurry carries out water quality and water by entering regulating reservoir after coarse rack Amount regulation.Then Anaerobic Treatment will be carried out by elevator pump in waste water lifting to UASB reactors, biogas slurry by secondary hydrolysis acidification, Organic concentration is greatly lowered.UASB reactor water outlet CODCr 700~800mg/L, NH31100~1200mg/L of-N, 300~350mg/L of TP 25~30mg/L, SS.Secondly waste water flows into two-stage A/O biological treatment systems certainly under gravity, Two-stage A/O technique tandems, aerobic section mixed liquor is partly refluxed to anoxic section.First order A/O uses activated sludge process, passes through Shorten sludge sludge age and hydraulic detention time, promote polyP bacteria growth, finally using spoil disposal method dephosphorization.Second level A/O is using life Thing embrane method, using the denitrifier that biomembrane enrichment generation time is long, promotes denitrification effect.Two-stage A/O pond water outlets CODCr 300 ~400mg/L, NH3400~430mg/L of-N 90~110mg/L, TP 8~10mg/L, SS.Then waste water enters medium sediment pool, Separation of solid and liquid is carried out, oil removal is further removed(SS), improve effluent quality.Medium sediment pool supernatant liquor enters coagulation reaction tank, And adding the medicaments such as PAC, PAM and white lime makes the suspension in waste water form flco, while further reducing the dense of COD and TP Degree.Coagulating basin water outlet CODCr 180~200mg/L, NH3180~200mg/L of-N 50~70mg/L, TP 3~5mg/L, SS. Supernatant enters sterilization pool after coagulating basin water outlet carries out separation of solid and liquid into second pond, adds and is carried out disinfection into NaClO, final true Water outlet is protected to meet the requirements qualified discharge.Final outflow water water-quality COD Cr 150~180mg/L, NH3- N 40~60mg/L, TP 2~ 100~130mg/L of 3mg/L, SS.In group technology sludge concentration tank mainly collect UASB reactors, medium sediment pool, coagulating basin and The excess sludge of second pond.By plate and frame filter press reduction moisture percentage in sewage sludge after sludge condensation, then dirt cake outward transport treatment disposal.

Claims (1)

1. a kind of UASB- two-stages A/O- coagulating treatments pig farm biogas slurry system, it is characterized in that:The system is constituted:Regulating reservoir, UASB reactors, one-level anoxic pond, one-level Aerobic Pond, two grades of anoxic ponds, two grades of Aerobic Ponds, medium sediment pool, coagulating basin, second pond, Sterilization pool, effluent standard mouthful are sequentially connected;UASB reactors, sludge concentration tank, plate and frame filter press are sequentially connected;Medium sediment pool, two Heavy pond and coagulating basin are connected with sludge concentration tank, the sludge in three ponds is entered sludge concentration tank;
The system work process is as follows:
(1)Pig farm biogas slurry carries out equilibrium after being collected by pipe network in flowing into regulating reservoir certainly after coarse rack removal bulky grain excrement slag Water quality and water;
(2)Regulating reservoir water outlet is promoted to by elevator pump and Anaerobic Treatment is carried out in UASB reactors, biogas slurry by secondary hydrolysis acidification, Organic concentration is greatly lowered, mitigates the treatment load of system subsequent technique;
(3)The water outlet of UASB reactors is under gravity from two-stage A/O biological treatment systems are flowed into, and the series connection of two-stage A/O techniques is good Oxygen section sets reflux pump by part mixed-liquor return to respective anoxic section;First order A/O uses Activated Sludge Process, passes through Shorten sludge sludge age and hydraulic detention time, promote polyP bacteria growth, finally using spoil disposal method dephosphorization;Second level A/O is using life Thing membrane process craft, extends sludge sludge age, is conducive to the breeding of generation time denitrifier long, promotes denitrification effect;
(4)Two-stage A/O pond water outlets carry out separation of solid and liquid from medium sediment pool is flowed into using gravitational settling effect, and further removal suspends The biomembrane come off in thing and FEOL, ensures effluent quality;
(5)Medium sediment pool supernatant liquor overflow enters coagulating basin, and to adding appropriate PAC, PAM and dephosphorization agent white lime in coagulating basin The suspension in waste water is set to form flco Deng medicament, while further reducing the concentration of COD and TP;
(6)Supernatant enters sterilization pool after coagulating basin water outlet carries out separation of solid and liquid into second pond, adds and is disappeared into NaClO Poison, kills Escherichia coli, malignant bacteria and fractionated viral, finally ensures that water outlet meets the requirements qualified discharge;
(7)Sludge concentration tank collects the dirt of regulating reservoir, UASB reactors, medium sediment pool, coagulating basin and second pond in group technology Mud, by plate and frame filter press reduction moisture percentage in sewage sludge after sludge condensation, then dirt cake outward transport treatment disposal.
CN201710120230.5A 2017-03-02 2017-03-02 UASB two-stage A/O coagulating treatments pig farm biogas slurry system Pending CN106830542A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107200400A (en) * 2017-06-22 2017-09-26 中国天辰工程有限公司 A kind of biochemical method of the preposition gas treatment waste water of denitrification
CN108328735A (en) * 2018-03-21 2018-07-27 碧沃丰工程有限公司 A kind of method of ammonia nitrogen in removal Wastewater from Pig Farm
CN109133535A (en) * 2018-10-12 2019-01-04 河南恒安环保科技有限公司 A kind of dry cleaning up excrement cultivating wastewater purification method
CN109133531A (en) * 2018-10-10 2019-01-04 浙江博华环境技术工程有限公司 A kind of process for town sewage treatment being applicable in quasi- IV class water quality standard
CN110467317A (en) * 2019-08-26 2019-11-19 广西农垦永新畜牧集团金光有限公司 A kind of livestock breeding wastewater innocuity disposal system and method
CN113371943A (en) * 2021-06-29 2021-09-10 成都飞创科技有限公司 Method for treating wastewater of farm

Citations (2)

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Publication number Priority date Publication date Assignee Title
CN102153195A (en) * 2011-03-04 2011-08-17 南昌大学 Novel up-flow anaerobic sludge blanket for treating wastewater of pig farm
CN104230097A (en) * 2014-08-21 2014-12-24 广州嘉康环保技术有限公司 Breeding sewage treatment method

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN102153195A (en) * 2011-03-04 2011-08-17 南昌大学 Novel up-flow anaerobic sludge blanket for treating wastewater of pig farm
CN104230097A (en) * 2014-08-21 2014-12-24 广州嘉康环保技术有限公司 Breeding sewage treatment method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107200400A (en) * 2017-06-22 2017-09-26 中国天辰工程有限公司 A kind of biochemical method of the preposition gas treatment waste water of denitrification
CN108328735A (en) * 2018-03-21 2018-07-27 碧沃丰工程有限公司 A kind of method of ammonia nitrogen in removal Wastewater from Pig Farm
CN109133531A (en) * 2018-10-10 2019-01-04 浙江博华环境技术工程有限公司 A kind of process for town sewage treatment being applicable in quasi- IV class water quality standard
CN109133535A (en) * 2018-10-12 2019-01-04 河南恒安环保科技有限公司 A kind of dry cleaning up excrement cultivating wastewater purification method
CN110467317A (en) * 2019-08-26 2019-11-19 广西农垦永新畜牧集团金光有限公司 A kind of livestock breeding wastewater innocuity disposal system and method
CN113371943A (en) * 2021-06-29 2021-09-10 成都飞创科技有限公司 Method for treating wastewater of farm

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