CN106145543A - A kind of town sewage advanced purification process - Google Patents

A kind of town sewage advanced purification process Download PDF

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Publication number
CN106145543A
CN106145543A CN201610705531.XA CN201610705531A CN106145543A CN 106145543 A CN106145543 A CN 106145543A CN 201610705531 A CN201610705531 A CN 201610705531A CN 106145543 A CN106145543 A CN 106145543A
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CN
China
Prior art keywords
pond
aerobic
nitrification
technique
sewage
Prior art date
Application number
CN201610705531.XA
Other languages
Chinese (zh)
Inventor
刘德华
李勇
杜成琼
肖武
刘常斌
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湖南中南水务环保科技有限公司
中国电建集团中南勘测设计研究院有限公司
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Priority to CN201610705531.XA priority Critical patent/CN106145543A/en
Publication of CN106145543A publication Critical patent/CN106145543A/en

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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
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/02Biological treatment
    • 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
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • 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
    • Y02W10/20Sludge processing

Abstract

A kind of town sewage advanced purification process of disclosure of the invention, this technique comprises the following steps: (1) sewage is adjusted after pond processes and sequentially enters anaerobic pond, anoxic pond, Aerobic Pond carry out biochemical treatment, are purified water A;The sewage time of staying in anaerobic pond, anoxic pond, Aerobic Pond is respectively 2.5 3.5h, 5.5 6.5h, 11 13h;The oxyty controlled in anoxic pond, Aerobic Pond is respectively 0.25 0.4mg/L, 0.5 1.0mg/L;Filling floating stuffing in Aerobic Pond, the packing volume of floating stuffing is 65 75% that aerobic cell body is long-pending;(2) purify water A entrance nitrification sedimentation tank and carry out nitrification precipitation process, be purified water B and nitrifying sludge;Nitrifying sludge is back to regulating reservoir by air stripping system through nitrifying sludge return duct;(3) purify water B after deep-bed filter purifies, i.e. complete the deep purifying of town sewage.This technique can accomplish biological multiplication, improves treatment effect, reduces pond and holds;Purification process device structure is simple, and flow process is reliable.

Description

A kind of town sewage advanced purification process
Technical field
The present invention relates to a kind of town sewage advanced purification process, belong to technical field of sewage.
Background technology
Along with the quickening of urbanization, villages and small towns population is constantly concentrated, and township enterprise develops rapidly, and town sewage discharge capacity is continuous Increase, and cities and towns infrastructure construction lags far behind the development with city-building, lack necessary sewage collection system and sewage Treatment facility, the unordered sinuous flow of sewage, the most directly pollutes samll cities and towns self ecological environment, and causes periphery water bodies of rivers and lakes Severe contamination.According to relevant report, the sanitary sewage of China more than 70% will be from cities and towns and community, samll cities and towns' water contaminated area phase When greatly.
At present, on sewage disposal technology, the technique of successful Application have traditional activated sludge process, biomembrance process, coagulation- Method or the utilizations that above-mentioned several techniques are combined such as the biology such as the sedimentation method, artificial swamp method and soil.But for China small city Town sewage disposal and deep purifying, it is difficult to meet that Small Town Wastewater waterpower is little, waterpower changes greatly, the fluctuation of water quality complexity greatly, basic The features such as facility condition difference.
Summary of the invention
For the deficiencies in the prior art, it is contemplated that develop a kind of aerobic suspending carrier biology multiplication, secondary sludge micro- Expose thorough nitrification, stripping reflux, there is process outlet effect good, take up an area few a kind of integration Small Town Wastewater and process and the degree of depth Purify process equipment.
The technical scheme is that, it is provided that a kind of town sewage advanced purification process, the equipment that this technique uses includes Regulating reservoir, anaerobic pond, anoxic pond, Aerobic Pond, nitrification sedimentation tank and the deep-bed filter being sequentially communicated, is provided with in nitrification sedimentation tank Aerating system, the bottom of nitrification sedimentation tank is provided with air stripping system and nitrifying sludge return duct;
This technique comprises the following steps:
(1) sewage is adjusted after pond processes and sequentially enters anaerobic pond, anoxic pond, Aerobic Pond carry out biochemical treatment, are purified water A;The sewage time of staying in anaerobic pond, anoxic pond, Aerobic Pond is respectively 2.5-3.5h, 5.5-6.5h, 11-13h;Control to lack Oxyty in oxygen pond, Aerobic Pond is respectively 0.25-0.4mg/L, 0.5-1.0mg/L;Floating stuffing is filled in Aerobic Pond, outstanding The packing volume of floating filler is the 65-75% that aerobic cell body is long-pending;
(2) purify water A entrance nitrification sedimentation tank and carry out nitrification precipitation process, be purified water B and nitrifying sludge;Nitrifying sludge It is back to regulating reservoir through nitrifying sludge return duct by air stripping system;
(3) purify water B after deep-bed filter purifies, i.e. complete the deep purifying of town sewage.
Further, the oxyty in described nitrification sedimentation tank is 0.4-0.5mg/L.
Further, fixing filler is filled in described anaerobic pond.
Further, described fixing filler is polyolefin elastic filler.
Further, installing several deflection plates in described anaerobic pond, fixing uniform filling is distributed between deflection plate.
Further, combined stuffing is filled in described anoxic pond.
Further, described combined stuffing is made up of PVC plastic and polyster fibre.
Further, rotational flow shearing air bubble aerator is set in described anoxic pond, Aerobic Pond, on rotational flow shearing air bubble aerator Aeration head between spacing be 0.45-0.55m.
Further, inclined plate packing is set in described nitrification sedimentation tank.
Further, it is arranged over several groove that catchments at inclined plate packing;It is provided with collection on the surrounding top of nitrification sedimentation tank Tank, each groove that catchments all connects with water leg, and water leg connects with deep-bed filter.
In the present invention, the main equipment of sewage disposal is integrated by multiple ponds, and the process in each pond is different, it can be seen that dirty Moisture section processes, and " pond " is referred to as " section ";As anaerobic pond is alternatively referred to as anaerobism section, Aerobic Pond is also referred to as aerobic section, nitre Change mud to sink to the bottom pond (nitrification sedimentation tank), be referred to as nitrifying sludge conversion zone, nitration reaction section etc..
Sewage fills fixing filler in entering anaerobism section in biochemical process main body, anaerobic pond after being adjusted pond, and sewage enters After anaerobic pond, forming Anaerobic Contact pond under the effect of fixing filler, it primarily serves the purpose of microorganism in sewage and preferably completes Release phosphorus.
Microbiological release phosphorus needs organic carbon source to carry out as under the energy, anaerobic condition, in order to preferably reach follow-up de- The effect of nitrogen dephosphorization, the sewage behind Anaerobic Contact pond enters filling combined stuffing in anoxia section, anoxia, and filler is circular fixing Weave filamentary fibers on support, make microorganism preferably and give birth on upper filler.The aerator laid bottom anoxia section lacks for ensureing The Denitrification of oxygen section denitrifying bacteria, maintains dissolved oxygen 0.25-0.4mg/L, preferably 0.25-0.30 mg/L.Anoxia section Combined stuffing forms contact-oxidation pool.
Denitrifying bacteria carries out Denitrification under amphimicrobian, and the nitrate nitrogen of water quality, nitrite nitrogen are dissimilated as nitrogen Gas, assimilates into microorganism own cells material on a small quantity.Denitrifying bacteria is using the organic carbon source in sewage as the energy equally, Carry out under the conditions of amphimicrobian.
After anoxia section contact-oxidation pool processes, former water fills floating stuffing in entering aerobic section, aerobic section, and filler is circle Pie, interior for microorganism adapt to support, packed density is whole aerobic section volume about 70%, sewage entrance aerobic section after, Under the aeration effect of bottom, floating stuffing constantly converts with the biological of attachment in aeration disturbance turbulent fluctuation, filler, controls aeration molten simultaneously Oxygen is at more than 0.5mg/L, biofacies comprehensive engagement dissolved oxygen, and bubble is tiny, and biofacies Aerobic Process for Treatment speed strengthens, and treatment efficiency adds Greatly, aerobic section is made to form biological multiplication state.
The microorganism of aerobic section carries out the effect such as fast hydrolyzing, acidifying to the organic carbon source in sewage, is divided by organic carbon source Solving, absorb, the phosphorus bacterium over loading of releasing in aerobic section aerobic microbiological inhales phosphorus simultaneously, makes aerobic section water outlet complete phosphorus removal functional.Logical Cross above-mentioned parameter to control, biochemistry pool (anaerobic pond+anoxic pond+Aerobic Pond) interior microorganism can be made to reach biological multiplication.
In aerobic section running, in sewage, organic carbon source can not fully meet the food source of aerobic section, after aerobic section Continuous nitrification sinks the organic carbon source that the carbon source after nitrification is supplemented in sewage by the air stripping system bottom pond.
Nitrification is sunk the aerating system bottom pond and is carried out micro-aeration, controls below dissolved oxygen 0.5mg/L, preferably 0.4-0.5mg/L, Accelerating the sludge disintegration that aerobic section flows into, the mud air stripping of decomposition to anaerobism section, is supplemented carbon by the air stripping system of aerobic section bottom Source.
In whole biochemical system, carried out by micro power.
By herein below, the sewage disposal process of the present invention can be further understood that Small Town Wastewater enters through water inlet pipe and adjust Joint pond, mixes with backflow nitrification mud liquid, under the agitation of bottom aerating system, fully carries out substrate hybrid reaction;Mixing Liquid enters anaerobism section by the anaerobism section passage of next-door neighbour's regulation pool side, arranges multiple little lattice in anaerobism section, and each little lattice are provided with Deflection plate, is filled with fixing filler between deflection plate, sewage advances through the upper and lower baffling of deflection plate after entering anaerobism section, one by one by every Lattice carry out point reaction, have good hydraulic flow state, and in water inlet, hardly degraded organic substance is hydrolyzed at this acidifying, raising sewage Biodegradability;The sewage of anaerobism section tail end enters anoxia section in anaerobism section with one end, scarce section section junction, and the other end is then for backflow What anoxia section mixed liquor carried out anaerobic phosphorus release reaction detests scarce return flow line;Sewage enters with aerobic section intersection one end through anoxia section Aerobic section, fills floating stuffing, forms biological floating bed, owing to suspended biological flotation bed is at aerator at the bottom of pond in aerobic section Under promotion, being thoroughly mixed with sewage, collide, shear, the bubble making aerator transmit is more tiny, improves coefficient of oxygen utilization, complete Becoming the oxidation of organic pollution, the nitrification of ammonia nitrogen and inhale the reactions such as phosphorus, the other end is then that aerobic section nitrification liquid is back to anoxia section Lack well return flow line, enter anoxia section, in anoxia section, be provided with combined stuffing, the nitrification liquid of backflow carries out denitrification and takes off at this Nitrogen, its water outlet part is back to anaerobism section, is substantially reduced the harmful effect that anaerobic phosphorus release is reacted by nitrate nitrogen;Enter aerobic section Sewage, under the effect of floating stuffing, fast breeding, accomplish biological multiplication;Entered by soil pipe through the sewage of aerobic section Nitrification sedimentation tank, the end points of soil pipe is positioned at the bottom of nitrification settler central authorities, and port is horn-like, beneficially water outlet;Go out Water-dispersible in sewage conduct surrounding, and rise by being arranged on the swash plate of cincture in device, then collect through a groove that catchments and converge to collection Tank, then discharged by drain pipe;Biochemical sewage is after swash plate, and in sewage, mud gets off along sloping plate deposition, and through at the bottom of device Conflux to central authorities at the bottom of device in inclination angle, portion;It is laid in the aerating system of bottom center, is supplied by trace, accelerate the mud nitre sunk to the bottom Change;Converge into the nitrification mud liquid of bottom of device central authorities by being arranged on before nitrification mud liquid is back to by air stripping system under aerator Sequence regulating reservoir, anoxia section;Source of the gas is respectively aerating system supply and supplies with air stripping system, individually controls.Nitrification sedimentation tank water outlet Carry out advanced nitrogen dephosphorization through deep-bed filter filtering layer again, it is ensured that water outlet, make water outlet reach discharging standards " urban wastewater treatment Factory's pollutant emission standard " GB18918-2002 one-level A standard.
Structural principle: Small Town Wastewater processes and advanced purification process equipment is by a few procedure regulating reservoirs, anaerobism section, anoxia Section, aerobic section, nitrification sedimentation tank, deep-bed filter combine, and remove water pipeline, reduce and take up an area;Nitrification backflow mud liquid is from nitre Change bottom sedimentation tank through aerating system pipeline stripping reflux to total system preamble process adjustments pond and anoxic pond, carry out nitrification with Denitrification, and replenishment system carbon source;In whole set process, in addition to anaerobism section, other operations all lay aerating system, are entered by aerator Row supply, reduces unnecessary power-equipment, and its regulating reservoir, anoxia section, aerobic section and nitrification sedimentation tank are all stirred and expose Gas oxygen transfer effect, deep-bed filter carries out backwash stirring and denitrogenation.
Beneficial effects of the present invention: 1. integration Small Town Wastewater processes and advanced purification process equipment is by civil engineering structure list The form of element moduleization composition integration apparatus, reduces on-site construction time, shortens construction period.2. anaerobism, anoxia use solid Determining biofilm, aerobic section uses floating stuffing biofilm, it is possible to accomplishes biological multiplication, improves treatment effect, reduces pond and holds.3. nitre Change sedimentation tank sloping plate deposition, shorten the sludge settling time, the micro-aeration in bottom, accelerate mud nitrification, air blast air stripping is delivered to preamble Anaerobic technique provides carbon source for it, reduces power-equipment;4. deep-bed filter advanced nitrogen dephosphorization, purify water, it is ensured that water outlet is imitated Really.5. integration Small Town Wastewater processes and advanced purification process device structure is simple, and flow process is reliable, process effluent quality up to To " urban wastewater treatment firm pollutant emission standard " GB18918-2002 one-level A standard.
Accompanying drawing explanation
Fig. 1 represents that Fig. 1 is the planar structure schematic diagram of the present invention.
Fig. 2 represents the profile of A-A in Fig. 1.
Fig. 3 represents the profile of B-B in Fig. 2.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described.
Present embodiment discloses process for town sewage treatment and the advanced purification process equipment of a kind of integration, this equipment Structure as depicted in figs. 1 and 2, including the water inlet pipe 1 being sequentially communicated, regulating reservoir 2, anaerobic pond 3, anoxic pond 4, Aerobic Pond 5, nitrification Sedimentation tank 6, deep-bed filter 7 and outlet pipe 10.
Regulating reservoir 2 edge upper part is provided with water inlet pipe 1, and bottom is provided with nitrifying sludge return duct 8 and aerating system distribution Pipe 92, lays aerator 9 in regulating reservoir 2.
Anaerobic pond 3 is contained within deflection plate 31, fills fixing filler 32 between deflection plate 31.
Being provided with combined stuffing 41 in anoxic pond 4, aerator 9 is laid in bottom.
Being provided with floating stuffing 51, specially macrovoid polyurethane filler in Aerobic Pond 5, aerator 9 is laid in bottom.
Aerator 9 bottom Aerobic Pond 5, anoxic pond 4 uses rotational flow shearing air bubble aerator.
Anaerobic pond 3 and anoxic pond 4 are provided with to detest and lacked aquaporin 33 and detested scarce return flow line 43;Described anoxic pond 4 with Aerobic Pond 5 is provided with and lacked aquaporin-4 2 and become reconciled scarce return flow line 53.
Nitrification sedimentation tank 6 is contained within inclined plate packing 61, and inclined plate packing 61 top arranges a groove 62 that catchments, and outside setting is catchmented Groove 63;Described nitrification sedimentation tank 6 is provided with soil pipe 52 with Aerobic Pond 5 joint, and the sewage in Aerobic Pond 5 flows through soil pipe 52 Entering nitrification sedimentation tank 6, the other end of soil pipe 52 is positioned at the central authorities of nitrification sedimentation tank 6, and end is arranged to horn mouth 65;Described nitre Changing and be provided with aerator 9, air stripping system 91 and nitrification mud liquid return duct 8 bottom sedimentation tank 6, air stripping system 91 makes nitrification mud liquid It is back to regulating reservoir 2 from nitrification mud liquid return duct 8.
Being provided with packing layer 71 in deep-bed filter 7, between packing layer 71 and bottom clear water, 73 separate with filter plate filter 72, clear water Between 73 sides be respectively provided with backwash water pipe 74 and backwash trachea 75, opposite side is provided with outlet pipe 10;Described deep-bed filter 7 Connect by being settled out the mouth of a river 64 with nitrification sedimentation tank 6.
Anaerobic pond in the present embodiment lays fixing filler, and filler is filled out with corrosion resistant, heatproof, ageing-resistant TPO elasticity Material (diameter 180mm, packed height 2.4 meters, filler spacing 400mm), away from the bottom of pond 0.5 meter bottom filler;Anoxic pond lays combination Filler, filler combines (diameter 150mm, packed height 2.4 meters, filler spacing 400mm) with PVC plastic+polyster fibre, fills out Away from the bottom of pond 0.5 meter bottom material;Aerobic Pond filling stereo hollow floating stuffing, filler material based on polyethylene (diameter 120mm × 8mm, packed space is the 70% of aerobic pool volume), lay aerator, spacing 0.5 meter bottom pond.
The present embodiment processes certain rural area town sewerage treatment plant amount of inlet water 450m3/ d, water concentration: COD >=250mg/ L, BOD >=100mg/L, float (SS) >=120mg/L, total nitrogen (TN) >=40mg/L, ammonia nitrogen (NH3-N) >=8mg/L, total phosphorus (TP) >=2mg/L.
The operational factor after this process equipment is used to be:
1. regulating reservoir dwell time of sewage 12h, between temperature 5 ~ 35 DEG C, DO≤0.2, pH value 6 ~ 8;
2. anaerobic pond hydraulic detention time 3h, between temperature 5 ~ 35 DEG C, DO≤0.05, pH value 6 ~ 8;
3. anoxic pond hydraulic detention time 6h, between temperature 5 ~ 35 DEG C, 0.25≤DO≤0.4, pH value 6 ~ 8;
4. Aerobic Pond hydraulic detention time 12h, between temperature 5 ~ 35 DEG C, DO >=0.5, pH value 6 ~ 8;
5. nitrification precipitating phase hydraulic detention time 2h, between temperature 5 ~ 35 DEG C, DO≤0.5, pH value 6 ~ 8, air stripping controls: at interval of 2h air stripping 15min(DO represents dissolved oxygen, and unit is mg/L).
Effluent quality after treatment: COD < 50mg/L, BOD < 20mg/L, SS < 10mg/L, TN < 5mg/L, NH3-N < 1mg/L, TP < 0.5mg/L, pH value 6 ~ 8.

Claims (10)

1. a town sewage advanced purification process, it is characterised in that the equipment that this technique uses includes the regulation being sequentially communicated Pond, anaerobic pond, anoxic pond, Aerobic Pond, nitrification sedimentation tank and deep-bed filter, be provided with aerating system, nitrification in nitrification sedimentation tank The bottom of sedimentation tank is provided with air stripping system and nitrifying sludge return duct;
This technique comprises the following steps:
(1) sewage is adjusted after pond processes and sequentially enters anaerobic pond, anoxic pond, Aerobic Pond carry out biochemical treatment, are purified water A;The sewage time of staying in anaerobic pond, anoxic pond, Aerobic Pond is respectively 2.5-3.5h, 5.5-6.5h, 11-13h;Control to lack Oxyty in oxygen pond, Aerobic Pond is respectively 0.25-0.4mg/L, 0.5-1.0mg/L;Floating stuffing is filled in Aerobic Pond, outstanding The packing volume of floating filler is the 65-75% that aerobic cell body is long-pending;
(2) purify water A entrance nitrification sedimentation tank and carry out nitrification precipitation process, be purified water B and nitrifying sludge;Nitrifying sludge It is back to regulating reservoir through nitrifying sludge return duct by air stripping system;
(3) purify water B after deep-bed filter purifies, i.e. complete the deep purifying of town sewage.
2. technique as claimed in claim 1, it is characterised in that the oxyty in described nitrification sedimentation tank is 0.4-0.5mg/ L。
3. technique as claimed in claim 1, it is characterised in that fill fixing filler in described anaerobic pond.
4. technique as claimed in claim 3, it is characterised in that described fixing filler is polyolefin elastic filler.
5. technique as claimed in claim 3, it is characterised in that installing several deflection plates in described anaerobic pond, fixing filler is equal Even it is distributed between deflection plate.
6. technique as claimed in claim 1, it is characterised in that fill combined stuffing in described anoxic pond.
7. technique as claimed in claim 6, it is characterised in that described combined stuffing is made up of PVC plastic and polyster fibre.
8. technique as claimed in claim 1, it is characterised in that set rotational-flow shearing bubble aeration in described anoxic pond, Aerobic Pond Device, the spacing between aeration head on rotational flow shearing air bubble aerator is 0.45-0.55m.
9. technique as claimed in claim 1, it is characterised in that set inclined plate packing in described nitrification sedimentation tank.
10. technique as claimed in claim 8, it is characterised in that be arranged over several groove that catchments at inclined plate packing;In nitrification The surrounding top of sedimentation tank is provided with water leg, and each groove that catchments all connects with water leg, and water leg connects with deep-bed filter.
CN201610705531.XA 2016-08-23 2016-08-23 A kind of town sewage advanced purification process CN106145543A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176763A (en) * 2017-07-06 2017-09-19 贵州三阁园林生态股份有限公司 A kind of method for treating water

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Publication number Priority date Publication date Assignee Title
CN1565998A (en) * 2003-06-17 2005-01-19 上海市政工程设计研究院 Activated sludge and biomembrane combined biological denitrification and dephosphorization treatment process
CN1609016A (en) * 2004-11-19 2005-04-27 宋乾武 Nitrogen and phosphorus removing process
CN104045154A (en) * 2013-03-12 2014-09-17 江苏瑞盛水处理有限公司 Wastewater biological treatment system based on bio-contact oxidation process
CN105293704A (en) * 2015-12-09 2016-02-03 华仪环保有限公司 Integrated sewage treatment device
CN205170617U (en) * 2015-11-16 2016-04-20 武汉紫光能控科技有限公司 Combined type treatment of domestic sewage integration equipment

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1565998A (en) * 2003-06-17 2005-01-19 上海市政工程设计研究院 Activated sludge and biomembrane combined biological denitrification and dephosphorization treatment process
CN1609016A (en) * 2004-11-19 2005-04-27 宋乾武 Nitrogen and phosphorus removing process
CN104045154A (en) * 2013-03-12 2014-09-17 江苏瑞盛水处理有限公司 Wastewater biological treatment system based on bio-contact oxidation process
CN205170617U (en) * 2015-11-16 2016-04-20 武汉紫光能控科技有限公司 Combined type treatment of domestic sewage integration equipment
CN105293704A (en) * 2015-12-09 2016-02-03 华仪环保有限公司 Integrated sewage treatment device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107176763A (en) * 2017-07-06 2017-09-19 贵州三阁园林生态股份有限公司 A kind of method for treating water

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