CN101928095B - Distributed domestic sewage treatment method - Google Patents

Distributed domestic sewage treatment method Download PDF

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Publication number
CN101928095B
CN101928095B CN2009101863816A CN200910186381A CN101928095B CN 101928095 B CN101928095 B CN 101928095B CN 2009101863816 A CN2009101863816 A CN 2009101863816A CN 200910186381 A CN200910186381 A CN 200910186381A CN 101928095 B CN101928095 B CN 101928095B
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China
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water
oxygenation
pulse
jet
sewage
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CN2009101863816A
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Chinese (zh)
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CN101928095A (en
Inventor
王顺发
熊兵
李�浩
熊继海
田先锋
吴永明
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江西省科学院能源研究所
九江市环境科学研究所
江西润阳环保科技有限公司
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Priority to CN2009101863816A priority Critical patent/CN101928095B/en
Publication of CN101928095A publication Critical patent/CN101928095A/en
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    • 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 invention discloses a distributed domestic sewage treatment method. The method combines process units of anaerobic, jet oxygenation, biological oxidation, artificial wetland and the like together to perform anaerobic, aerobic and wetland ecological three-stage treatment on the domestic sewage so as to effectively reduce CODcr and BOD5 of the domestic sewage; and dephosphorization and denitrification are performed, and the effluent is stable and reaches the standards before emitting. A jet oxygenation pulse water distributor is adopted in the jet oxygenation, and the jet oxygenation pulse water distributor oxygenates the anaerobic effluent and provides pre-oxygenation treatment for a subsequent aerobic process; the biological oxidation is performed in a trickling filtration tower which is designed with 2 to 3 layers and provided with vent holes, a ceramic filler is placed in the trickling filtration tower, and the trickling filtration tower distributes water by adopting time control pulse so that the re-oxygenation effect of the trickling filtration tower can be improved and no power is consumed; and the artificial wetland is designed in an undercurrent form, proper fillers such as coal cinder, plaster, gravels and the like are placed in the artificial wetland, and pollutants can be further degraded and removed from the wetland environment. The method is suitable for standard-reaching treatment of rural or urban distributed domestic sewage.

Description

A kind of distributed domestic sewage treatment method
Technical field
The present invention relates to anaerobism/jet oxygenation bio-oxidation/artificial swamp combined sewage water dephosphorization and denitrification process and handle the sewage technology, belong to the environmental protection water-treatment technology field.
Background technology
Along with development and national economy, China's water environment pollution is in continuous aggravation, and the sewage environmental pollution problem in rural area is also severe day by day.Experiences and lessons from Taihu Lake, Dian Chi Pollution abatement process is learnt; It is not enough only paying close attention to urban domestic wastewater and industrial wastewater treatment; Have only the most of sewage in cities and towns and rural all to obtain improvement simultaneously, China's water surrounding just can obtain the improvement and the protection of essence.
Traditional disperse type sewage treatment process has: septic tank, methane-generating pit, oxidation pond, soil processing, integrated oxidation ditch etc.In recent years; Also apply mechanically city or industrial sewage biochemical treatment or materialization treatment technology; As adopt UASB (up-flow anaerobic sludge blanket), SBR (sequence bioreactor), membrane bioreactor and buried contact-oxidation pool to wait and handle dispersion type domestic wastewater, though also obtained good treatment effect; All, be difficult to apply owing to reasons such as investment are big, energy consumption is high, working cost is high, management difficulty is big.Flow process is simple in order to seek, investment saving, convenient management, is fit to the processing mode of dispersant type domestic wastewater characteristics, and domestic many scholars have done a lot of useful exploratory developments, summarizes to get up to adopt the one-levels biological treatment to add the artificial swamp combination technique more.Comprise: 1. artificial composite ecological bed; 2. buried unpowered anaerobic treatment; 3. anaerobism/drop oxygenation and contact oxidation/artificial swamp combination process; 4. pulse laminate composite filter material biological filter/artificial swamp (PBF/CW); 5. from refluxing blodisc and waterplant filter bed combination technique; 6. tower earthworm ecological filter tank-artificial wet land system etc., but still there is such or such problem in these existing Technologies, narration be as follows:
Artificial composite ecological bed: many engineering practices show that single wet land system contaminant removal capacity is limited, and the mosquitos and flies in surface current wetland summer multiplies, stink flies away problem, and the filler blockage problem of current wetland all fails effectively to be solved.
Buried unpowered anaerobic treatment: publication number CN2476549 discloses a kind of buried unpowered purifying domestic sewage device, comprises sewage import, pure water inlet and treating pond.Treating pond comprises housing and three layers of rising structure, and the first layer is the settling region; The second layer is the hydrolysis settling section; The 3rd layer is the biological chemistry treatment zone.But buried unpowered anaerobic treatment technology (UUAR) is to NH 4 +-N removes limited in one's ability, and the water outlet ammonia nitrogen concentration also is higher than influent concentration sometimes, and this obviously is that system has lacked aerobic processes, and denitrification fails to carry out towards anticipated orientation.
Anaerobism/drop oxygenation and contact oxidation/artificial swamp combination process: though this technology flow process is simple, power consumption is little, and pollutant removal is preferably arranged, and the drop oxygenation and contact oxidation process exists structures facility floor space big, and is inharmonious with environment; Having obvious foul smell to fly away with the wind during drop influences environmental health, and problem such as drop oxygenation is limited in one's ability.Notification number CN100336745 anoxia, drop aeration, artificial wetland combined sewage water dephosphorization denitrification method discloses a kind of anaerobism, drop oxygenation, artificial wetland combination type small-scale sewage dephosphorizing and denitrifying method; This sewage water treatment method combines anaerobically fermenting, drop water aeration and artificial swamp; At first sewage is got into the charging pond; Get into anaerobic pond then; Get into the drop oxygenation and contact oxidation pond through material-output tank through water pump lifting again, get into artificial swamp at last, the drop oxygenation and contact oxidation pond be arranged to two ponds to four ponds the polyphone form.The shortcoming of this method has obvious foul smell to fly away with the wind when being drop influences surrounding enviroment.
Pulse laminate composite filter material biological filter/artificial swamp (PBF/CW): system floor space in pulse laminate composite filter material biological filter is little; And the stink that flies away that has overcome the existence of drop oxygenation system influences environmental problem; But pulse laminate composite filter material biological filter system still exists oxygenation capacity limited; Can not satisfy than high organic loading the time, because of oxygen in water is not enough, the autotrophic bacteria nitrification weakens and influences ammonia nitrogen removal frank.Publication number CN1872738 discloses a kind of method and apparatus that utilizes artificial swamp to handle sewage,
From backflow blodisc and waterplant filter bed combination technique: with above-mentioned several method ratio; From backflow blodisc and waterplant filter bed combination technique system higher pollutent volumetric loading and good denitrogenation dephosphorizing effect are arranged; But because of blodisc is a running device; System architecture, wiring and operational management relative complex, power consumption is also bigger, has applied certain degree of difficulty in the Rural areas.
Tower earthworm ecological filter tank-artificial wet land system: pollutant removal is preferably arranged though adopt earthworm and ecological filter-artificial wet land system to handle rural domestic waste; Especially there is stronger removal ability (ammonia nitrogen removal frank can maintain about 82%) ammonia nitrogen removal load to reach as high as 27g/ (m to ammonia nitrogen 2D).Publication number CN101284705 discloses a kind of tower earthworm ecological pond of handling sewage, and publication number CN101121570 discloses a kind of method and apparatus of treating domestic sewage by earthworm strengthened artificial wet land.Publication number CN1320568 discloses a kind of physiological microbe-earthworm filter pool system for treating household of sewage, adopts to meet the ecological physiological microbe-earthworm filter tank that food chain connects of forming.But the mode of operation of earthworm and ecological filter water distribution and some alternate runs acquires a certain degree of difficulty in management, and problem solutions all not yet in effect at present such as the earthworm later stage disposal of eliminating, filter bed cleaning, earthworm bed insulation in winter.
Summary of the invention
The present invention combines technique units such as anaerobism, jet oxygenation, bio-oxidation and artificial swamp; Sewage anaerobism, aerobic and Wetland ecological tertiary treatment have been carried out; Can be effectively to the sewage dephosphorization denitrogenation, stable water outlet reaches " urban wastewater treatment firm pollutant emission standard " one-level B standard in (GB18918-2002).
Realize that the used facility of technical process of the present invention mainly contains: anaerobic pond, equalizing tank, water pump, jet oxygenation pulse water distribution device, bio-trickling filter, header tank, artificial swamp.
Jet oxygenation pulse water distribution device is as shown in Figure 2, by water sprayer (7); Pulse water tank (6); Time controller (3); Electric operator (4); Water distributor (5) is formed.Water sprayer has sewage inlet (1), gas inlet (2) that gets into air that gets into sewage and the jet orifice that gets into pulse water tank (6); The pulse of pulse water tank (6) discharges water by time controller (3) control, is carried out by electric operator (4); Water distributor is porous plate or perforated tube.Jet oxygenation pulse water distribution device is handled for follow-up aerobic processes provides preoxygenation anaerobism water outlet oxygenation.
Drip filter tower and carry out aerobic biodegradation, drip filter tower and be designed to 2~3 layers, ventilation hole is arranged; Built-in ceramic filler, the waste water after degraded water tank at the bottom of tower is collected, and water tank has the settling tank function; Recirculation water returns the anaerobism equalizing tank with the microbial film that comes off by the bottom, and water outlet gets into artificial swamp.Drip the time control pulse water distribution of filter tower employing jet oxygenation pulse water distribution device, can improve and drip a filter tower reoxygenation effect, and water distribution is even, non-power consumption.
Technical process of the present invention:
1, the sanitary wastewater of collecting directly gets into anaerobic pond, and the anaerobic environment in the pond makes organic waste water generation biological degradation; Waste water flows into equalizing tank then, and the effect of adjusting water quality and quantity had both been played in this pond, can make recirculation water that denitrification takes place in the pond again.Anaerobic pond and equalizing tank are unitized construction, be arranged on underground, built-in combined stuffing, recirculation water is folded to advection.The nitrification and denitrification reaction that waste water carries out in the anaerobism equalizing tank, the nitrogen content in the waste water descends greatly.
2, waste water passes through water pump lifting, at first via the jet pulse water distributor, and the oxygenation of advanced horizontal high voltage water jet, jet oxygenation pulse water distribution device is handled for follow-up aerobic processes provides preoxygenation anaerobism water outlet oxygenation.Dissolved oxygen can increase by 2~3mg/L in the anaerobism water outlet behind injector, and the electronic time setting pulse water distributor of the entering of the waste water after jet oxygenation high stable performance carries out pulse water distribution then.Jet oxygenation and pulse water distribution carry out in sealed environment, can prevent effectively that the waste water unpleasant odor from spreading to environment.
3, the waste water after the oxygenation of jet pulse water distributor carries out aerobic biodegradation at a filter tower, drips a filter tower and is designed to 2~3 layers, and ventilation hole is arranged; The built-in ceramic filler; Have certain phosphor-removing effect, the water tank at the bottom of tower of the waste water after the degraded is collected, and water tank has the settling tank function; Recirculation water returns the anaerobism equalizing tank with the microbial film that comes off by the bottom, and water outlet gets into artificial swamp.Drip filter tower and adopt the time control pulse water distribution, can improve and drip filter tower reoxygenation effect, and water distribution is even, non-power consumption.
4, water outlet is done further biological degradation at artificial swamp (6), and wetland is designed to undercurrent type, fillers such as built-in suitable cinder, gypsum, cobble, wetland plants such as top layer plantation reed, cattail, iris.When waste water was flowed through wetland, solids was held back by artificial substratum and wetland plant root stopping, and is organic through biomembranous absorption, assimilation and dissimilation and be able to removal.Because of the transmission of wetland plant root system to oxygen discharges; Demonstrate aerobic, anoxic and anaerobic state in wetland bed and the microenvironment on every side thereof successively; Help the excess accumulation effect of nitrated, denitrification and mikrobe to phosphorus; Reach the effect of denitrogenating phosphorus, periodic replacement or the plant harvesting through wetland matrix finally removed pollution substance from system at last.Stable water outlet effluxes after reaching the GB18918-2002 standard.
The beneficial effect of the present invention and prior art comparison is, total system is all moved under negative pressure state, efficiently solves the foul smell that the open type sewage treatment unit exists and flies away problem of environment pollution caused with the wind.Whole process has only an intake pump as power-equipment, and power consumption is few, and working cost is low; Artificial swamp is designed to continuous undercurrent, and system can realize that nobody looks after management.Drip filter tower and adopt jet oxygenation time control pulse water distribution, can improve and drip filter tower reoxygenation effect, be beneficial to nitration reaction, and water distribution is even, non-power consumption.WWT when this device can satisfy than high organic loading, stable effluent quality reach stable water outlet and reach " urban wastewater treatment firm pollutant emission standard " one-level B standard in (GB18918-2002).
The present invention is suitable for the processing up to standard of rural area or town domestic sewage.
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is a jet oxygenation pulse water distribution device structural representation;
Picture in picture number: (1) sewage inlet; (2) gas inlet; (3) time controller; (4) electric operator; (5) water distributor; (6) pulse water tank; (7) water sprayer.
Embodiment
The embodiment of the invention is handled sewage 10~20m in a day 3Implement in the system of/d.The present embodiment domestic sewage processing system is made up of anaerobic pond, equalizing tank, bio-trickling filter, artificial swamp etc.
The useful volume 36m of present embodiment anaerobic pond 3, hydraulic detention time 18 hours; The useful volume 24m of equalizing tank 3, hydraulic detention time 12 hours, anaerobic pond and equalizing tank are unitized construction, be arranged on underground, built-in filler, recirculation water is folded to advection, is arranged on the underground anaerobic pond that makes and keeps certain temperature, is beneficial to anaerobically fermenting.The volumetric loading of bio-trickling filter is 0.30kgBOD 5/ m 3D, hydraulic surface loading 30m 3/ m 2D; Bio-trickling tower height 4m, 2 layers of interior branches, every layer all is covered with ceramic packing, the logical oxygen of perforate between layer and the layer.The hydraulic load of artificial swamp: 500m 3/ h m 2D, organic loading: 1.5kgBOD 5/ m 2A.Artificial swamp is the vertical current undercurrent type, artificial substratums such as built-in suitable cinder, gypsum, cobble, wetland surface plantation reed, cattail, iris etc.

Claims (1)

1. distributed domestic sewage treatment method; It is characterized in that; Said method combines anaerobism, jet oxygenation, bio-oxidation and artificial wetland process unit, and sewage has been carried out anaerobism, aerobic and Wetland ecological tertiary treatment, can reduce the CODcr and the BOD of sewage effectively 5, and carry out dephosphorization denitrogenation, the stable water outlet qualified discharge;
Jet oxygenation pulse water distribution device is adopted in said jet oxygenation, and jet oxygenation pulse water distribution device is handled for follow-up aerobic processes provides preoxygenation anaerobism water outlet oxygenation and effective water distribution;
Said jet oxygenation pulse water distribution device is made up of water sprayer (7), pulse water tank (6), time controller (3), electric operator (4), water distributor (5); Water sprayer has sewage inlet (1), gas inlet (2) that gets into air that gets into sewage and the jet orifice that gets into pulse water tank (6); The pulse of pulse water tank (6) discharges water by time controller (3) control, is carried out by electric operator (4); Water distributor is porous plate or perforated tube;
Said bio-oxidation is carried out in dripping filter tower, drips filter tower and is designed to 2~3 layers, and ventilation hole is arranged; The built-in ceramic filler; Waste water after degraded water tank at the bottom of tower is collected, and recirculation water returns the anaerobism equalizing tank with the microbial film that comes off by the bottom, drips filter tower and adopts jet oxygenation pulse water distribution device time control pulse water distribution; Can improve and drip filter tower reoxygenation effect, non-power consumption.
CN2009101863816A 2009-10-30 2009-10-30 Distributed domestic sewage treatment method CN101928095B (en)

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Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102134146A (en) * 2011-04-13 2011-07-27 丁树久 Treatment method and device for organic sewage
CN102432102A (en) * 2011-10-28 2012-05-02 江苏鹏鹞环境工程设计院 Sewage treatment nitrification/denitrification process
CN102503036B (en) * 2011-11-09 2013-08-21 中国科学院广州地球化学研究所 High-efficiency denitrification artificial soil subsurface infiltration sewage treatment composite system and method
CN102531293B (en) * 2012-01-19 2013-03-06 常州大学 Centralized treatment system for sewage in rural area
CN103936226B (en) * 2014-04-04 2015-09-09 环境保护部南京环境科学研究所 A kind of artificial wet land system and operation method thereof
CN104045157B (en) * 2014-06-24 2016-02-10 辽宁工程技术大学 A kind of permeability response wall system for the treatment of refuse percolate
CN104150595B (en) * 2014-07-25 2016-05-04 北京建筑大学 A kind of overland flow biological treatment system and processing method
CN104860389A (en) * 2015-05-07 2015-08-26 江西省科学院能源研究所 Integrated micro-power oxygen filling sewage treatment device
CN105130102A (en) * 2015-07-30 2015-12-09 东南大学 Method for reinforced denitrification deodorization in distributed domestic sewage biochemical treatment
CN108083551A (en) * 2016-11-22 2018-05-29 华蓝设计(集团)有限公司 Domestic sewage in rural areas distributed processing system
CN107216004B (en) * 2017-06-30 2020-12-22 中电环保股份有限公司 Domestic sewage treatment system and method

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CN200949072Y (en) * 2006-09-08 2007-09-19 重庆大学 Impulse jet aerator
CN101200341A (en) * 2007-10-26 2008-06-18 江苏省交通科学研究院有限公司 High road service area sewage water treating process and dynamic membrane bioreactor

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Publication number Priority date Publication date Assignee Title
CN1544363A (en) * 2003-11-10 2004-11-10 华中科技大学 Saponin waste water handling method
CN200949072Y (en) * 2006-09-08 2007-09-19 重庆大学 Impulse jet aerator
CN101200341A (en) * 2007-10-26 2008-06-18 江苏省交通科学研究院有限公司 High road service area sewage water treating process and dynamic membrane bioreactor

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