CN108569762A - A kind of multifunctional all domestic sewage treatment device - Google Patents

A kind of multifunctional all domestic sewage treatment device Download PDF

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Publication number
CN108569762A
CN108569762A CN201810436232.XA CN201810436232A CN108569762A CN 108569762 A CN108569762 A CN 108569762A CN 201810436232 A CN201810436232 A CN 201810436232A CN 108569762 A CN108569762 A CN 108569762A
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water
slot
pond
multifunctional
treatment device
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CN201810436232.XA
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邹春明
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Jiangsu Da Chu Environmental Protection Equipment Co Ltd
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Jiangsu Da Chu Environmental Protection Equipment Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/308—Biological phosphorus removal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F2001/007—Processes including a sedimentation step
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Molecular Biology (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

The invention discloses a kind of multifunctional all domestic sewage treatment device, pulse water-feeding and eddy flow water distribution are used to improve hydrolysis anaerobic zone treatment effeciency；Suspension flowing filler is used to replace fixed filler to improve biochemical zone efficiency；Forebay is flowed back into using underwater scooter；Suspended matter is improved using tube settling and filtering and retains efficiency；In the state of not changing facility structure, process operation pattern can be adjusted flexibly according to the water quality condition of sanitary sewage COD height and the content of nitrogen and phosphorous, it is more preferable, more efficient to compare conventional contacts oxidative treatment effect to the processing load higher of sanitary sewage for the device.

Description

A kind of multifunctional all domestic sewage treatment device
Technical field
The invention belongs to water treatment fields, are applied particularly to sanitary sewage disposal field, are a kind of multifunctional integrated metaplasias Sewage disposal device living.
Technical background
Integrated domestic sewage treatment device develops comparatively fast at home, but long-standing problem producer be equipment treated row It puts tail water ammonia nitrogen, total phosphorus and suspended matter and is unable to qualified discharge.According to《Urban wastewater treatment firm pollutant emission standard》 （GB18918-2002）In level-one A standards requirement：CODcr≤50mg/L 、BOD5≤10mg/L、 NH3-N≤5mg/L、TP ≤ 0.5mg/L, SS≤10mg/L, it is desirable that higher.
Existing sanitary sewage integrated apparatus, as application number 2015100128298 discloses a kind of integration life dirt Water treatment facilities, including main box, manhole, anaerobic pond, contact-oxidation pool and MBR membrane cisternas, which is characterized in that the main box It is internally provided with twice partition board, main box is divided into anaerobic pond, contact-oxidation pool and MBR membrane cisternas, in anaerobic pond and contact-oxidation pool Upper-center position be respectively equipped with manhole, be equipped with the water inlet that is connected with anaerobic pond, water outlet in the front end of main box It is located at the least significant end for the main box being connected with MBR membrane cisternas.Although the invention is integrated, integration degree is high, takes up an area Area is small, but follows the techniques such as standard biologic contact oxidation method, A/O methods, A2/O, MBR method, and COD can generally reach discharge Standard,（In addition to the SS of MBR energy is up to standard）Other contamination indexes are such as：Ammonia nitrogen, total nitrogen, total phosphorus are unable to stably reaching standard discharge, in addition to Facility has a single function that outer there is also the factors such as the high operational administrative inconvenience of operating cost.
Invention content
Based on the deficiency of above-mentioned integrated domestic sewage treatment device, it is dirty that the present invention provides a kind of multifunctional all life Water treatment facilities are combined by enhanced hydrolysis, anoxic, micro- oxygen, aerobic, precipitation filtering function.It is realized while removing COD Short distance nitration and denitrification have good treatment effect to ammonia nitrogen, total phosphorus and suspended matter, and treated, and discharge water can reach 《Urban wastewater treatment firm pollutant emission standard》（GB18918-2002）In level-one A standards.It is set with solving above-mentioned integration It is standby cannot qualified discharge, the problems such as operating cost is high completely.
Purpose to realize the present invention provides following technical scheme：A kind of multifunctional all domestic sewage treatment device, Hydrolysis anaerobism groove, biological cleaning slot, precipitation and homogeneous filtering material filtering group including being installed on sequence water connection in a shell Close slot, it is characterised in that be both provided with floated fluidized packing material in hydrolysis anaerobism groove, biological cleaning slot；One pulse water-feeding tank is located at It hydrolyzes above anaerobism groove, underriding pipe is laid in the eddy flow water distribution of hydrolysis anaerobism trench bottom across the connection of floated fluidized packing material Device；Biological cleaning slot is separated into three pond bodies of front and back water connection by partition board, and each pool bottom is equipped with aerator, lower part pond Wall is equipped with underwater scooter；Precipitate the tube settling slot being connected to by water with homogeneous filtering material combination slot and homogeneous filtering material lautertuns group At tube settling slot is connected to biological cleaning slot, and the lower part of homogeneous filtering material lautertuns is equipped with outlet pipe and backwash tube, backwash Pipe connects pulse water-feeding tank, and the top of homogeneous filtering material lautertuns is equipped with backwash return duct, and backwash return duct connection hydrolysis is detested Oxygen slot；Tube settling trench bottom is equipped with sludge refluxing apparatus connection hydrolysis anaerobism groove or biological cleaning slot.Sanitary sewage is through artificial Sump elevator pump is flowed into after fine fack by sewage lifting to pulse water-feeding tank, pulse frequency is every 5 minutes primary, when discharging water Between be 8-12 seconds.The underriding pipe of pulse water-feeding pipe goes out the cyclone water distributor in water slug hydrolysis anaerobism groove, floated fluidisation activity Filler and anaerobism or aerobic-anaerobic microbe（Activated sludge）Uniformly mixing makes the pollutant for being difficult to biochemical degradation in sewage and big point Sub- substance decomposition is degradable small-molecule substance, flows automatically after hydrolysis acidification and enters biological cleaning slot, is passed through in biological cleaning slot Anaerobism or anoxic or aerobic each order reaction are crossed, sewage enters tube settling slot later, and the phosphorus containing sludge of bottom sedimentation passes through sludge Reflux is back to hydrolysis anaerobism groove or biological cleaning slot or discharge；Water after precipitation enters homogeneous filtering material lautertuns, will hang Floating particles remove, and finally treated, and water is discharged from water outlet；Homogeneous filtering material lautertuns is gone out by the backwash tube of pulse water-feeding tank Water timing backwashes, and backwash water outlet is back to hydrolysis anaerobism groove reprocessing from backwash return duct.
The pulse water-feeding can body be circular tank, inside by water inlet pipe, siphon pipe, exhaust pipe, siphon destructing tube, bow Washing pipe forms.Pulse water-feeding tank pulse frequency is five minutes primary, and discharge time is 8-12 seconds.
The cyclone water distributor is umbellate form, and the injection well downhole flow regulator top for being located at umbrella shape cyclone cover top center connects pulse water-feeding tank Underriding pipe, lower part be connected to umbrella shape cyclone cover in several water-jet pipes；Sector is offered on the bottom end cover body of umbrella shape cyclone cover Water channel.When pulse water-feeding, flow starts to rotate in umbellate form circle under powerful hydraulic loading shock, and sewage is distributed to water by moment The each corner of solution anaerobism section is simultaneously sufficiently mixed with activated sludge, improves sewage treating efficiency.
The not instead of suspension type of the multifunctional all domestic sewage treatment device, filling fixes filler, floated Fluidisation activity filler, filler are reticulated particle specific surface area bigger.Fixed filler is passively to receive bio-film colonization, thus be easy to make At biomass undue concentration, formed satisfy lotus biology stick or biological item thus be not easy demoulding, due to being not easy the excessive of demoulding biomembrane It accumulates, making the absorption of filler bottom microorganism, rotten indiscriminate rotten, reduction bioactivity finally loses degradation capability less than dissolved oxygen.It is outstanding Floating fluidized packing material is that have prodigious specific surface area, in non-biofilm with the reticulated particle filler for being aerated flow and moving It is close with water phase that density is slightly less than density after water hangs up biomembrane, since packing density is close to water, so when aeration, leads to It crosses the agitaion of water aeration stream and is distributed in the arbitrary liquid level in waters, actively receive the biofilm of activated sludge during exercise, with In being thoroughly mixed state, carrier collision in water and shear action keep air bubble more even and fine, increase the profit of oxygen sewage With rate, the biomembrane activity on filler surface is improved, due to all having different biotic populations, growth inside inside and outside each carrier Some anaerobic bacterias or facultative aerobe, external preferably bacteria are detested as the biomembrane on filler surface layer constantly thickeies just to be formed from the inside to surface Oxygen, anoxic, aerobic boundary layer carrier each in this way are that a microreactor also corresponds to more miniature A of n2/ O, nitrification Reaction and anti-nitration reaction exist simultaneously, to improve treatment effect.Start after biological film bottom is absorbed less than dissolved oxygen Corrupt aging, due to the agitation of flow and the shear action impact force between filler particles in addition of air-flow, the biomembrane of aging is just It falls off（Claim demoulding）.Second generation microorganism starts to adhere to biofilm, and the biological membrane part to fall off is utilized by two generation microorganisms, and part is made It is discharged for excess sludge.The phase generation more frequent bioactivity of this metabolism is higher, and treatment effect is better.
Three pond bodies in the biological cleaning slot are not in the state of changing facility structure, according to sanitary sewage COD high Low and the content of nitrogen and phosphorous water quality condition is designed to anaerobic pond or anoxic pond or micro- oxygen by technological requirement by controlling aerator Pond or aerobic tank flexibly switch to MBBR and multi stage decompression technology pattern, A2/ O technology patterns, UCT technology patterns or ABFT technology patterns.
Anaerobic pond：It is not aerated in anaerobic pond, anaerobic fermentation bacterium is by the biodegradable larger molecular organics in sewage It is converted into the lower fermentation intermediate product of this kind of molecular weight of VFA；PolyP bacteria is synthesized by the cytoplasm of itself, mass propagation.
Anoxic pond：In hypoxia response pond by dissolved oxygen control within 0.5mg/L, denitrifying phosphorus removing bacteria utilizes nitrous acid Salt carries out anoxic as electron acceptor and inhales phosphorus, and nitrite salt is reduced to nitrogen.
Micro- oxygen pond：In micro- oxygen pond interior control dissolved oxygen concentration in 1mg/L hereinafter, 2.0 hours of hydraulic detention time. Remaining organic matter is removed in micro- oxygen pond.According to OLAND principles, in low dissolving oxygen environment, ammonia oxidation bacteria obtains oxygen Ability is more than nitrite-oxidizing bacterium, therefore provides the condition of growth of advantage in the environment of low dissolved oxygen for ammonia oxidation bacteria, ensures The nitrite accumulation rate of 85-90 or more.
Aerobic tank：High dissolved oxygen is arranged in aerobic tank to ensure remaining nitrite being oxidized to nitrate, gathers Phosphorus bacterium is while using remaining organic substrate in sewage, the energy mainly released by decomposing the PHB that it is stored in vivo Maintain growth, while the dissolved phosphorus in excess ingestion environment, nitrifier that the mineralized nitrogen in sewage is become nitrate.
The precipitation is with homogeneous filtering material combination slot, and biological cleaning slot production water enters tube settling slot, and inclined tube act as increasing Add settling area, improve effect of settling, the phosphorus containing sludge of bottom sedimentation is back to hydrolysis anaerobism groove or discharge by air-lift device；Most Precipitation water outlet afterwards enters homogeneous filtering material lautertuns, suspended particulate is removed so that water body is limpider, lautertuns is by pulse water-feeding Tank timing backwashes, and backwash effluent recycling saves recoil pump and recoil pond to hydrolysis anaerobism groove reprocessing.
The multifunctional all domestic sewage treatment device, the reflux type that after-bay flows back into forebay use are returned with conventional Flow device is different, and normal reflux uses water pump（External water pump or immersible pump）Reflux.And the present invention is flowed back using underwater scooter. The shortcomings that water pump flows back is pipe laying reflux, the factors such as the high water of the big power consumption of power is small, phegma is unevenly distributed.And it uses latent Pushing-type reflux type is to install underwater scooter on pool wall perforated wall, by the mixed-liquor return of after-bay to forebay.The small water of power Amount is big, and low energy consumption, and phegma is uniformly mixed.Operating cost is greatly reduced while improving wastewater treatment efficiency.
Advantageous effect：By the above-mentioned means, the present invention can be by CODcr contents：The purifying domestic sewage of 400-600mg/L Handle 50mg/L hereinafter, and have Nitrogen/Phosphorus Removal outstanding, treated discharge water quality reach《Urban wastewater treatment firm is dirty Contaminate object discharge standard》（GB18918-2002）In level-one A standards.
Description of the drawings
Fig. 1 is multifunctional all domestic sewage treatment device structural schematic diagram.
Fig. 2 is the structural schematic diagram of cyclone water distributor.
Fig. 3 is MBBR and catalytic oxidation pattern diagram.
Fig. 4 is A2/O operational mode schematic diagrames.
Fig. 5 is UCT operational mode schematic diagrames.
Specific implementation mode
Embodiment 1：As shown in Figure 1, a kind of multifunctional all domestic sewage treatment device, including it is installed on a shell Interior, the connection of sequence water hydrolysis anaerobism groove 8, biological cleaning slot 9, precipitation and homogeneous filtering material filtration combination slot, hydrolyze anaerobism groove 8, it is both provided with floated fluidized packing material 3 in biological cleaning slot 9；One pulse water-feeding tank 1 is located at 8 top of hydrolysis anaerobism groove, bows Washing pipe 4 passes through floated fluidized packing material 3 to connect the cyclone water distributor 2 for being laid in 8 bottom of hydrolysis anaerobism groove, and cyclone water distributor 2 is Umbellate form is located at the underriding pipe 4 of 21 top of the injection well downhole flow regulator connection pulse water-feeding tank 1 at umbrella shape cyclone cover top center, and lower part is connected to umbrella Several water-jet pipes 22 in shape cyclone cover offer fan-shaped water channel 23 on the bottom end cover body of umbrella shape cyclone cover；Biological cleaning slot 9 Three pond bodies of front and back water connection are separated by partition board, each pool bottom is equipped with aerator 10, and lower part pool wall is equipped with latent Water propeller 11；It precipitates the tube settling slot 12 being connected to by water with homogeneous filtering material combination slot and homogeneous filtering material lautertuns 13 forms, Tube settling slot 12 is connected to biological cleaning slot 9, and the lower part of homogeneous filtering material lautertuns 13 is equipped with outlet pipe 7 and backwash tube 5, instead Flush pipe 5 connects pulse water-feeding tank 1, and the top of homogeneous filtering material lautertuns is equipped with backwash return duct 6, and backwash return duct 6 connects Water receiving solution anaerobism groove 8；12 bottom of tube settling slot is equipped with the connection of sludge refluxing apparatus 14 hydrolysis anaerobism groove 8 or biological cleaning slot 9.
Embodiment 2：As shown in figure 3, MBBR and multi stage decompression pattern（Ammonia nitrogen≤40mg/L total phosphorus≤2.0mg/L）. By three pond body aerating system standard-sized sheets of biological cleaning slot, system is set to be in complete aerobic state, i.e., by three in biological cleaning slot Pond body is both designed as aerobic tank, and the sludge refluxing apparatus connection hydrolysis anaerobism groove of tube settling trench bottom forms MBBR and multistage Catalytic oxidation mode processes, 4 hours of aeration stop 1 hour, and system suspension filler is in full fluidized state and catalytic oxidation work Skill is identical.Reactor had not only had the characteristics that traditional biological embrane method anti impulsion load, sludge age were long, excess sludge is few but also active The high efficiency of sludge and going slick property.Sludge concentration is higher in reactor, and general sludge concentration is conventional activated sludge process 5~10 times of sludge concentration, aeration tank sludge quality concentration may be up to 30~40g/L.By the aeration and flow in aeration tank Castering action so that carrier is in fluidized state, and then form the biomembrane of the activated sludge and apposition growth of suspension growth, this It allows for moving-bed biofilm and has used entire space reactor, it is mutually superior with both suspended phase biologies to give full play to attachment Property, it is allowed to maximize favourable factors and minimize unfavourable ones, be complementary to one another.Unlike previous filler, floating stuffing can with the frequent multiple-contact of sewage because And it is referred to as " mobile biomembrane ".
Embodiment 3：As shown in figure 4, A2/ O patterns（Ammonia nitrogen >=50mg/L total phosphorus >=4.0mg/L）.
Three pond bodies in biological cleaning slot are arranged respectively to anaerobic pond, anoxic pond and aerobic tank, aerobic tank and anaerobic pond Between be equipped with mixed-liquor return pipe, tube settling trench bottom sludge refluxing apparatus connection hydrolysis anaerobism groove, formed A2/ O patterns Technique.A2/ O patterns are by aerobic mixed-liquor return flows back into anaerobism to anaerobism section, then by clarifier sludge.In technological process It is interior, BOD5, SS and existing nitrogen and phosphorus are removed in a variety of manners.By 10% water inlet by hydrolyzing anaerobism in the process Biological cleaning slot is flowed into after slot processing, 90% water inlet is directly entered biological cleaning slot.A2The activity of/O biological carbon and phosphorous removal systems In sludge, flora is mainly made of nitrifier and denitrifying bacterium, polyP bacteria.In aerobic section, nitrobacteria is by the ammonia nitrogen in becoming a mandarin And organic nitrogen ammonification at ammonia nitrogen, acted on by biological nitration, be converted to nitrate；In anoxic section, denitrifying bacteria interior will return The nitrate that stream is brought into is converted to nitrogen and is escaped into air by biological denitrification, to achieve the purpose that denitrogenation； Anaerobism section, polyP bacteria discharge phosphorus, and the degradable organic matter such as absorb lower fatty acid；And in aerobic section, polyP bacteria excess is inhaled Phosphorus is received, and by the discharge of excess sludge, phosphorus is removed.
Embodiment 4, as shown in figure 5, UCT patterns（Ammonia nitrogen >=80mg/L total phosphorus >=6.0mg/L）.It will be in biological cleaning slot Three pond bodies are arranged respectively to anaerobic pond, anoxic pond and aerobic tank, and mixed-liquor return pipe is equipped between aerobic tank and anoxic pond, lack Mixed-liquor return pipe is additionally provided between oxygen pond and anaerobic pond, the sludge refluxing apparatus of tube settling trench bottom is connected to biological cleaning slot In anoxic pond, formed UCT mode processes.UCT techniques are with A2/O techniques the difference is that clarifier sludge flows back into anoxic Pond rather than flow back into anaerobic pond, can prevent from entering anaerobic pond due to nitrate nitrogen in this way, destroy the anaerobic state of anaerobic pond And influence the dephosphorizing rate of system.The mixed-liquor return from anoxic pond to anaerobic pond is increased, is flowed back from anoxic pond to anaerobic pond Contain more dissolubility BOD in mixed liquor5, and nitrate is seldom, is carried by the hydrolysis of organic matter reaction carried out in anaerobism section Optimal condition is supplied.

Claims (7)

1. a kind of multifunctional all domestic sewage treatment device, including it is installed on the water of sequence water connection in a shell Solve anaerobism groove, biological cleaning slot, precipitation and homogeneous filtering material filtration combination slot, it is characterised in that hydrolysis anaerobism groove, biological cleaning slot Inside it is both provided with floated fluidized packing material；One pulse water-feeding tank is located above hydrolysis anaerobism groove, and underriding pipe is across floated stream Change the cyclone water distributor that filler connection is laid in hydrolysis anaerobism trench bottom；Biological cleaning slot is separated into front and back water connection by partition board Three pond bodies, each pool bottom are equipped with aerator, and lower part pool wall is equipped with underwater scooter；Precipitation is combined with homogeneous filtering material The tube settling slot and homogeneous filtering material lautertuns that slot is connected to by water form, and tube settling slot is connected to biological cleaning slot, homogeneous filter Expect lautertuns lower part be equipped with outlet pipe and backwash tube, backwash tube connect pulse water-feeding tank, homogeneous filtering material lautertuns it is upper Portion is equipped with backwash return duct, backwash return duct connection hydrolysis anaerobism groove；Tube settling trench bottom is equipped with sludge refluxing apparatus Connection hydrolysis anaerobism groove or biological cleaning slot.
2. a kind of multifunctional all domestic sewage treatment device according to claim 1, it is characterised in that eddy flow water distribution Device is umbellate form, is located at the underriding pipe of the injection well downhole flow regulator top connection pulse water-feeding tank at umbrella shape cyclone cover top center, lower part is connected to umbrella Several water-jet pipes in shape cyclone cover.
3. a kind of multifunctional all domestic sewage treatment device according to claim 1, it is characterised in that umbrella shape eddy flow Fan-shaped water channel is offered on the bottom end cover body of cover.
4. a kind of multifunctional all domestic sewage treatment device according to claim 1, it is characterised in that biological cleaning Three pond bodies in slot are designed as anaerobic pond or anoxic pond or micro- oxygen pond or aerobic tank by technological requirement.
5. a kind of multifunctional all domestic sewage treatment device according to claim 4, it is characterised in that biological cleaning Three pond bodies in slot are both designed as aerobic tank, and the sludge refluxing apparatus connection hydrolysis anaerobism groove of tube settling trench bottom is formed MBBR and multi stage decompression mode processes.
6. a kind of multifunctional all domestic sewage treatment device according to claim 4, it is characterised in that biological cleaning Three pond bodies in slot are arranged respectively to anaerobic pond, anoxic pond and aerobic tank, are returned equipped with mixed liquor between aerobic tank and anaerobic pond Flow tube, the sludge refluxing apparatus connection hydrolysis anaerobism groove of tube settling trench bottom, forms A2/ O mode processes.
7. a kind of multifunctional all domestic sewage treatment device according to claim 4, it is characterised in that will be biological net Three pond bodies changed in slot are arranged respectively to anaerobic pond, anoxic pond and aerobic tank, and mixed liquor is equipped between aerobic tank and anoxic pond Return duct is additionally provided with mixed-liquor return pipe, the sludge refluxing apparatus connection of tube settling trench bottom between anoxic pond and anaerobic pond Anoxic pond in biological cleaning slot forms UCT mode processes.
CN201810436232.XA 2018-05-09 2018-05-09 A kind of multifunctional all domestic sewage treatment device Pending CN108569762A (en)

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CN110255813A (en) * 2019-06-06 2019-09-20 广州市净水有限公司 The sewage-treatment plant of multi-functional multi-mode can be switched
CN110294568A (en) * 2019-05-11 2019-10-01 浙江水艺环境科技有限公司 One kind is for improveing UCT sewage treatment plant and method
CN110615530A (en) * 2019-09-05 2019-12-27 中国市政工程中南设计研究总院有限公司 High-efficiency energy-saving multi-mode enhanced denitrification sewage treatment system
CN113072262A (en) * 2021-04-23 2021-07-06 南京索科水务科技有限公司 Combined denitrification process based on pulse type UBF + multi-stage contact oxidation + flocculation precipitation

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CN203582658U (en) * 2013-12-10 2014-05-07 海天水务集团股份公司 Multi-stage aeration reclaimed water treatment system for medium and small towns
CN204125308U (en) * 2014-11-17 2015-01-28 环境保护部华南环境科学研究所 A kind of A 2o-BAF combination process pilot plant
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CN205241350U (en) * 2015-12-18 2016-05-18 浙江一清环保工程有限公司 Rural sewage integrated treating equipment of variable
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CN110294568A (en) * 2019-05-11 2019-10-01 浙江水艺环境科技有限公司 One kind is for improveing UCT sewage treatment plant and method
CN110255813A (en) * 2019-06-06 2019-09-20 广州市净水有限公司 The sewage-treatment plant of multi-functional multi-mode can be switched
CN110615530A (en) * 2019-09-05 2019-12-27 中国市政工程中南设计研究总院有限公司 High-efficiency energy-saving multi-mode enhanced denitrification sewage treatment system
CN110615530B (en) * 2019-09-05 2024-03-12 中国市政工程中南设计研究总院有限公司 High-efficiency energy-saving multi-mode enhanced denitrification sewage treatment system
CN113072262A (en) * 2021-04-23 2021-07-06 南京索科水务科技有限公司 Combined denitrification process based on pulse type UBF + multi-stage contact oxidation + flocculation precipitation
CN113072262B (en) * 2021-04-23 2023-08-22 南京索科水务科技有限公司 Combined denitrification process based on pulse UBF+multistage contact oxidation+flocculation precipitation

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