CN106865890A - A/O SBBR oxidation pond artificial wetland treatments pig farm biogas slurry system - Google Patents

A/O SBBR oxidation pond artificial wetland treatments pig farm biogas slurry system Download PDF

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Publication number
CN106865890A
CN106865890A CN201710120728.1A CN201710120728A CN106865890A CN 106865890 A CN106865890 A CN 106865890A CN 201710120728 A CN201710120728 A CN 201710120728A CN 106865890 A CN106865890 A CN 106865890A
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pond
sbbr
anoxic
sludge
biogas slurry
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万金保
付煜
王建永
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
    • C02F1/66Treatment 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
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • 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
    • C02F2301/04Flow arrangements
    • C02F2301/046Recirculation with an external loop
    • 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
    • C02F3/30Aerobic and anaerobic 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
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • 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
    • C02F3/32Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
    • C02F3/322Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
    • C02F3/325Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria

Abstract

A/O SBBR oxidation pond artificial wetland treatments pig farm biogas slurry system, regulating reservoir, anoxic pond, Aerobic Pond, second pond were set gradually before sequencing batch biofilm reactor (SBBR), oxidation pond and the three-stage constructed wetland being made up of water plants such as canna, reed, cattail, wild rice stems is set up successively after SBBR reactors;The system treatment effect stabilization, capacity of resisting impact load is strong, and simple to operate, operating cost is low.The SBBR reactors method of operation and time parameter are water inlet 1h, are aerated 3.5h, anoxic 2h, are aerated 3.5h, precipitate 1h, draining 1h.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

A/O-SBBR- oxidation pond-artificial wetland treatment pig farm biogas slurry system
Technical field
The present invention relates to a kind of anoxic/aerobic(A/O), sequencing batch biofilm reactor(SBBR), oxidation pond and Manual moist Ground(CW)Combined treatment pig farm biogas slurry system, belongs to Environmental Science and Engineering technical field.
Background technology
In recent years, China's livestock and poultry breeding industry is developed rapidly, forms scale, intensive development trend, while producing Substantial amounts of feces of livestock and poultry, the environmental problem that it is formed is also increasingly serious.First time, national Pollutant source investigation publication showed, livestock and poultry Aquaculture year 1268.26 ten thousand tons of COD of discharge, 102.48 ten thousand tons of total nitrogen, 16.04 ten thousand tons of total phosphorus.Additionally, according to measuring and calculating The yield of the year two thousand twenty whole nation feces of livestock and poultry is up to 42.22 × 108t.Livestock and poultry breeding industry pollution has turned into China rural area face source One of principal element of pollution, also as the third-largest pollution sources after industrial wastewater and sanitary sewage.National statistics shows Pig-breeding industry accounts for the 47% of the scale of livestock and poultry breeding industry, therefore management of the necessary increasing to pig industry waste water.Existing rank Section, the Large-scale pig farm waste water treatment of China has been basically completed Anaerobic Treatment, that is, has had Anaerobic Treatment structures, such as biogas Pond.By anaerobic fermentation so that the larger molecular organicses in piggery wastewater are changed into small molecular organic acid, organic concentration is Decline.But the still rich nutritive material such as the COD containing higher concentration and a large amount of ammonia, phosphorus in a large amount of biogas slurries produced after fermentation, such as Fruit is not processed further, and directly discharge will form serious destruction to the ecological environment on periphery.
At present, kinds of processes, such as Fe-C Micro Electrolysis Method, SBBR techniques, ultrafiltration are have developed to pig farm biogas slurry treatment both at home and abroad (UF)Etc..But single treatment technique is not disposable up to standard, and have that treatment effect is unstable, operational and administrative expenses is high etc. asks Topic, still lacks the such waste water of PROCESS FOR TREATMENT of economical rationality, technology maturation at this stage.Therefore, find a kind of Nitrogen/Phosphorus Removal Good, investment and operating cost are low, suit measures to local conditions, operational administrative it is simple, and the combination work of certain economy and environmental benefit can be produced Skill, the problem of environmental pollution caused to solution large scale of pig farm waste water is particularly important.
The content of the invention
The purpose of the present invention is directed to pig farm biogas slurry has the spies such as concentration of nitrogen and phosphorus is high, content of organics is big and biodegradability is poor A kind of point, it is proposed that anoxic/aerobic(A/O)- sequencing batch biofilm reactor(SBBR)- oxidation pond-artificial swamp(CW)It is comprehensive Treatment pig farm biogas slurry system is closed, is met by effluent index after system treatment《Livestock and poultry breeding industry pollutant emission standard》 (GB 18596-2001)It is required that.
Realize the technical scheme is that:Using anoxic/aerobic(A/O), sequencing batch biofilm reactor(SBBR), oxygen Change the pool, artificial swamp(CW)Quaternity integrated treatment pig farm biogas slurry,
The system is constituted:Set gradually before sequencing batch biofilm reactor regulating reservoir, anoxic pond, Aerobic Pond, two sink Pond, sets up oxidation pond and be made up of water plants such as canna, reed, cattail, wild rice stems three successively after SBBR reactors Level artificial swamp.
The connection of the second pond, sequencing batch biofilm reactor and sludge drying bed, makes the sludge in two ponds enter sludge and does Change bed, sludge drying bed is connected with anoxic pond, sludge upper liquid is flow to anoxic pond.The system work process is as follows:
(1)Pig farm biogas slurry is collected by pipe network, is adjusted from inflow by after the excrement slag and inorganic floating object of grid retention bulky grain Pond, carries out water quality and runoff investigation, reduces impact load;
(2)Biogas slurry enters anoxic pond by elevator pump after overregulating, and is reacted by hydrolysis acidification in the presence of heterotroph.Drop Solution organic matter improves the biodegradability of waste water, and partial suspended particle is removed in the presence of the absorption of biomembrane and gravitational settling Thing;
(3)Anoxic pond water outlet gravity flow enters Aerobic Pond, and microorganism passes through a large amount of degradation of organic substances of metabolism under aerobic condition And most ammonia nitrogen is removed by nitrification, while controlling the mixed liquor of Aerobic Pond to be partly refluxed to anoxic pond, improve Denitrification denitrogenation effect;
(4)Aerobic Pond water outlet enters second pond by elevator pump, and waterpower clarification, the work that removal FEOL is lost in are carried out to waste water Property sludge and the biomembrane that comes off to maintain the normal operation of subsequent technique, the sludge part of sedimentation basin be back to anoxic pond and SBBR reactors, improve activated sludge concentration;
(5)Secondary clarifier effluent passes through downflow weir overflow to SBBR reactors, using the biomembrane being attached in reactor on filler Biochemical degradation is carried out to pollutant, the SBBR reactors method of operation and time parameter are water inlet 1h, are aerated 3.5h, anoxic 2h, are exposed Gas 3.5h, precipitates 1h, draining 1h, by further removing COD, nitrogen phosphorus etc. after the nitrification/anti-nitration reaction in aerobic/anoxic Pollutant;
(6)SBBR reactors water outlet gravity flow enters oxidation pond, and waste water is carried out using bacterium, algae cogeneration system and aquatile system Purification;
(7)Oxidation pond water flows into artificial swamp, and artificial swamp is 3 grades of series connection;The first order is vertical current constructed wetland, and plantation is beautiful People any of several broadleaf plants;The second level is surface current artificial wetland, plants reed and cattail;The third level is drowned flow artificial wet land, plantation wild rice stem, fox-brush Algae;Waste water carries out advanced treating by soil, medium, plant, the physics of microorganism, chemistry, biological multiple synergy, finally Qualified discharge;
(8)The excess sludge of second pond and SBBR reactors enters sludge drying bed, and the sludge after desiccation is carried out at outward transport treatment Put.
The advantage of the invention is that:
By by the mixed-liquor return in O ponds to A ponds, enhancing the effect of denitrification denitrogenation and without additional carbon;Denitrification mistake The basicity that journey is produced forms dynamic equilibrium with the basicity of the consumption of nitration reaction, without additional basicity, saves medicament expense use. Biodegradability by improve waste water after A/O techniques, is conducive to the normal operation of system subsequent biological treatment technique.
SBBR reactor start-up cycle is shorts, capacity of resisting impact load is strong, and excess sludge yield is few, equipment disposal ability Greatly.Biomembrane is fixed on filler surface, can perch generation time microorganism long, forms food chain more long, such as nitrobacteria, Therefore denitrification effect is good.Agitating device need not be set in reactor and sludge reflux is not needed, energy consumption is small and management easy to maintain.Instead Answering device can realize Automatic Control, be easy to debug and manage, and obtain optimal operating parameter.
Oxidation pond available depth 1.8m, is divided into aerobic zone, aerobic area and anaerobic zone, using micro- life in different water depth region Thing forms helotism system and waste water is purified, and pool body simple structure is economical and practical, and operational management is convenient.
The water treatment effect of different flow pattern various plants in three-stage constructed wetland is given full play to, the de- of depth can have been carried out Nitrogen dephosphorization.In addition large-scale artificial swamp can improve the capacity of resisting impact load of system, while playing the landscape beautified the environment Effect.
Waste water treatment process need not add chemical agent when normally running, and will not produce secondary pollution.Wastewater treatment work Skill operating cost is low, operational administrative is simple, is easy to the daily management on pig farm and is adapted to large-scale pig farm wastewater treatment and technology is pushed away Extensively.
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 A/O-SBBR- oxidation pond-artificial wetland treatment pig farm biogas slurry system schematic.
Specific embodiment
System of the present invention is constituted:In sequencing batch biofilm reactor(SBBR)Regulating reservoir is set gradually before, lacked Oxygen pond, Aerobic Pond, second pond, set up oxidation pond and by canna, reed, cattail, wild rice stem etc. successively after SBBR reactors The three-stage constructed wetland that water plant is constituted.
The connection of the second pond, sequencing batch biofilm reactor and sludge drying bed, makes the sludge in two ponds enter sludge and does Change bed, sludge drying bed is connected with anoxic pond, sludge upper liquid is flow to anoxic pond.
Treating capacity is 400m3The pig farm biogas slurry of/d, biogas slurry water quality:CODCr 1200~1500mg/L, NH3- N 500~ 450~800mg/L of 630mg/L, TP 20~30mg/L, SS.Pig farm biogas slurry by after grid enter regulating reservoir, carry out water quality and Runoff investigation.Then waste water enters the anoxic section of A/O techniques, is acted on using the hydrolysis acidification of heterotroph, and degradation of organic substances is improved The biodegradability of waste water.Anoxic section water outlet flows into aerobic section, and the metabolism by microorganism under aerobic condition is largely degraded Organic matter and most ammonia nitrogen is removed by nitrification.The mixed liquor of Aerobic Pond is controlled to be partly refluxed to anoxic simultaneously Pond, improves denitrification denitrogenation effect.Aerobic Pond water outlet CODCr 900~1000mg/L, NH3- N 390~420mg/L, TP 18 380~400mg/L of~22mg/L, SS.Aerobic Pond water outlet enters second pond by elevator pump, and waterpower clarification is carried out to waste water, goes The activated sludge that is lost in except FEOL and the biomembrane that comes off are maintaining the normal operation of subsequent technique.Secondary clarifier effluent is flowed into SBBR reaction tanks, biochemical degradation is carried out using the biomembrane being attached in reactor on filler to pollutant.The SBBR methods of operation And time parameter is water inlet 1h, is aerated 3.5h, anoxic 2h, is aerated 3.5h, precipitates 1h, draining 1h.By aerobic/anoxic ammonium oxidation The pollutants such as COD, nitrogen phosphorus are further removed after anti-nitration reaction.SBBR water outlet CODCr 250~280mg/L, NH3- N 220~ 230~250mg/L of 250mg/L, TP 4~6mg/L, SS.SBBR water outlets flow into oxidation pond and by canna, reed, perfume (or spice) successively The three-stage constructed wetland that the water plants such as Pu, wild rice stem are constituted.Waste water by soil, artificial dielectric, plant, the physics of microorganism, The multiple synergy of chemistry, biochemistry carries out advanced treating to waste water, final outflow water water-quality COD 180~210mg/L of Cr, NH370~90mg/L of-N 30~40mg/L, TP 2~3mg/L, SS.

Claims (1)

1. a kind of A/O-SBBR- oxidation pond-artificial wetland treatment pig farm biogas slurry system, it is characterized in that:The system is constituted: Sequencing batch biofilm reactor sets gradually regulating reservoir, anoxic pond, Aerobic Pond, second pond before being SBBR, in SBBR reactors Set up oxidation pond and the three-stage constructed wetland being made up of water plants such as canna, reed, cattail, wild rice stems successively afterwards;
The second pond, sequencing batch biofilm reactor are that SBBR is connected with sludge drying bed, the sludge in two ponds is entered sludge Drying bed, sludge drying bed is connected with anoxic pond, sludge upper liquid is flow to anoxic pond;
The system work process is as follows:
(1)Pig farm biogas slurry is collected by pipe network, is adjusted from inflow by after the excrement slag and inorganic floating object of grid retention bulky grain Pond, carries out water quality and runoff investigation, reduces impact load;
(2)Biogas slurry enters anoxic pond by elevator pump after overregulating, and is reacted by hydrolysis acidification in the presence of heterotroph, drop Solution organic matter improves the biodegradability of waste water, and partial suspended particle is removed in the presence of the absorption of biomembrane and gravitational settling Thing;
(3)Anoxic pond water outlet gravity flow enters Aerobic Pond, and microorganism passes through a large amount of degradation of organic substances of metabolism under aerobic condition And most ammonia nitrogen is removed by nitrification, while controlling the mixed liquor of Aerobic Pond to be partly refluxed to anoxic pond, improve Denitrification denitrogenation effect;
(4)Aerobic Pond water outlet enters second pond by elevator pump, and precipitation clarification, the work that removal FEOL is lost in are carried out to waste water Property sludge and the biomembrane that comes off maintaining the normal operation of subsequent technique;
The sludge part of second pond is back to anoxic pond and SBBR reactors, improves activated sludge concentration;
(5)Secondary clarifier effluent passes through downflow weir overflow to SBBR reactors, using the biomembrane being attached in reactor on filler Biochemical degradation is carried out to pollutant, the SBBR reactors method of operation and time parameter are water inlet 1h, are aerated 3.5h, anoxic 2h, are exposed Gas 3.5h, precipitates 1h, draining 1h, by further removal COD, nitrogen phosphorus are dirty after the nitrification/anti-nitration reaction in aerobic/anoxic Dye thing;
(6)SBBR reactors water outlet gravity flow enters oxidation pond, and one is entered to waste water using bacterium, algae cogeneration system and aquatile system Step purification;
(7)Oxidation pond water flows into artificial swamp, and artificial swamp is 3 grades of series connection;The first order is vertical current constructed wetland, and plantation is beautiful People any of several broadleaf plants;The second level is surface current artificial wetland, plants reed and cattail;The third level is drowned flow artificial wet land, plantation wild rice stem, fox-brush Algae;Waste water carries out advanced treating by soil, medium, plant, the physics of microorganism, chemistry, the multiple synergy of biochemistry, Final qualified discharge;
(8)The excess sludge of second pond and SBBR reactors enters sludge drying bed, and the sludge after desiccation is carried out at outward transport treatment Put.
CN201710120728.1A 2017-03-02 2017-03-02 A/O SBBR oxidation pond artificial wetland treatments pig farm biogas slurry system Pending CN106865890A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111592103A (en) * 2020-04-29 2020-08-28 浙江省农业科学院 Treatment method of livestock and poultry breeding wastewater
CN111718060A (en) * 2020-05-20 2020-09-29 苏州首创嘉净环保科技股份有限公司 Integrated sewage treatment equipment with front-end pretreatment
CN112408724A (en) * 2020-12-07 2021-02-26 深圳市浩天源环保科技有限公司 Method and system for treating wastewater of farm

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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
CN104649511A (en) * 2014-12-23 2015-05-27 安徽省天虹绿洲环保科技有限公司 Rural domestic wastewater treatment process

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
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
CN104649511A (en) * 2014-12-23 2015-05-27 安徽省天虹绿洲环保科技有限公司 Rural domestic wastewater treatment process

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111592103A (en) * 2020-04-29 2020-08-28 浙江省农业科学院 Treatment method of livestock and poultry breeding wastewater
CN111592103B (en) * 2020-04-29 2021-07-23 浙江省农业科学院 Treatment method of livestock and poultry breeding wastewater
CN111718060A (en) * 2020-05-20 2020-09-29 苏州首创嘉净环保科技股份有限公司 Integrated sewage treatment equipment with front-end pretreatment
CN112408724A (en) * 2020-12-07 2021-02-26 深圳市浩天源环保科技有限公司 Method and system for treating wastewater of farm

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