CN107311405A - Urban sewage treatment system and technique - Google Patents

Urban sewage treatment system and technique Download PDF

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Publication number
CN107311405A
CN107311405A CN201710709666.8A CN201710709666A CN107311405A CN 107311405 A CN107311405 A CN 107311405A CN 201710709666 A CN201710709666 A CN 201710709666A CN 107311405 A CN107311405 A CN 107311405A
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China
Prior art keywords
pond
sludge
sewage
anoxic pond
sedimentation basin
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Pending
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CN201710709666.8A
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Chinese (zh)
Inventor
高阳
翟进伟
崔勇
张振
董丽霞
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BEIJING BODA WATER Co Ltd
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BEIJING BODA WATER Co Ltd
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Priority to CN201710709666.8A priority Critical patent/CN107311405A/en
Publication of CN107311405A publication Critical patent/CN107311405A/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
    • 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
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281Installations for water purification using chemical agents
    • 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
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/04Disinfection
    • 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
    • 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
    • C02F3/1268Membrane bioreactor systems
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The invention discloses a kind of urban sewage treatment system and technique, the system includes the first casing and the second casing, include anoxic pond, Aerobic Pond, sedimentation basin and clear water reserviors in first casing, include regulating reservoir, MBR membrane cisternas and sludge-tank in second casing, the regulating reservoir, anoxic pond, Aerobic Pond, sedimentation basin and sludge-tank are sequentially communicated by water pipe, the MBR membrane cisternas are connected with sedimentation basin, clear water reserviors, anoxic pond and sludge-tank respectively, and MBBR reactors and plate-folding device are provided with anoxic pond and Aerobic Pond.The beneficial effects of the present invention are:The time of contact of folded plate, increase sewage and filler is set on MBBR Process ba- sis, sewage treating efficiency is substantially increased;Rearmounted MBR films, good with treatment effeciency height, effluent quality using membrane separation technique and the comprehensive management of technology of biologic treating technique combination simultaneously;The advantages of facility compact, small floor space.

Description

Urban sewage treatment system and technique
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of urban sewage treatment system and technique.
Background technology
City domestic sewage is mainly various detergent, sewage, rubbish and excrement for being used in urban life etc., mostly without The inorganic salts of poison, wherein it is more containing element ratios such as N, P, S, due to the remittance of the waste water such as household water, early-stage rainwater, washing, Make N, P severe overweight in sanitary sewage, COD, BOD value also in increase, and sanitary sewage can result in pathogen contamination, Oxygen enrichment pollution, acid-alkali salt pollution etc..
In the last few years, the rate of economic development in China city was relatively fast, the sewage for being produced in city and living and producing Amount is also gradually increasing, and compared with developed countries, China's treatment rate of domestic sewage is not also high, and technique is also to be improved, Management is also relatively backward, and average every 1,500,000 people or so just possesses a sewage treatment plant, and also there is construction of wastewater treatment plant Effective investment utilization rate and processing water rate low problems up to standard.Wastewater treatment in China facility is relative to developed country also ten Divide and fall behind.
The technique of sewage disposal is also more single in currently available technology, main using two sections of activated sludge processes, will be dirty Waterpipe, sewage treatment plant are considered as a sewage disposal system, including:Self-priming jet aeration device, lateral flow domatic swash plate sink Shallow lake pond, unsupported sludge suspension type biologic packing material.Its concrete methods of realizing is:A sections are high load capacity, B sections of underloads, A, B two Section flows back respectively, makes full use of the microorganism in it, it is played one's part to the full, when the good environmental condition of creation is easy to different The growth of the superior microorganism population of phase growth.Although but this processing method effect stability, cost is higher, and removes Rate is relatively low, and BOD clearances are only that 90%, COD clearances are only 80%.Also there is completion time of project length, construction cost simultaneously higher The problems such as.
The content of the invention
The problem of to solve in existing technology, complicated for sewage disposal system construction project, processing sewage efficiency is low The problems such as, the invention provides a kind of rational deployment, total tune, reduce to greatest extent at the municipal sewage of wastewater discharge Reason system and the sewage treatment process carried out using the system.
For up to above-mentioned purpose, the present invention is achieved through the following technical solutions:
A kind of urban sewage treatment system, the system includes including anoxic in the first casing and the second casing, the first casing Include regulating reservoir, MBR membrane cisternas and sludge-tank, the regulating reservoir, anoxic in pond, Aerobic Pond, sedimentation basin and clear water reserviors, the second casing Pond, Aerobic Pond, sedimentation basin and sludge-tank are sequentially communicated by water pipe, the MBR membrane cisternas respectively with sedimentation basin, clear water reserviors, anoxic Pond is connected with sludge-tank, is provided with anoxic pond and Aerobic Pond in MBBR reactors, Aerobic Pond and is additionally provided with plate-folding device.
Wherein, MBR is membrane bioreactor, and MBBR techniques are MBBR technology, sewage of the invention Processing system designs B-M on MBBR Process ba- sis2Technique, i.e. folded plate type MBBR, B-M2Technique has concurrently MBBR process characteristics, separately set the time of contact of folded plate, increase sewage and filler, substantially increase sewage treating efficiency, reduce The floor space of processing system.
Further, regulating reservoir porch is provided with grid.For filtering larger suspension, floating object, hair and The impurity such as fiber.Sewage pump is additionally provided with regulating reservoir, for by the sewage lifting in regulating reservoir into anoxic pond.
Further, mixer is provided with anoxic pond, the reaction in anoxic pond is fully carried out.
Further, micro-hole aerator is provided with Aerobic Pond, micro-hole aerator is communicated with air blower.
Further, the first sludge pump is provided with sedimentation basin, the first sludge pump is connected by pipeline with anoxic pond.
Further, it is provided with the second sludge pump in MBR membrane cisternas.
Further, the first casing and the second cabinet end portion are respectively arranged with the first equipment room and the second equipment room.
A kind of urban sewage treatment process, comprises the following steps:
S1, sewage are entered sewage lifting in grid by sewage pump after collecting and collecting, and then from flowing into regulating reservoir, are entered The regulation of water-filling matter, water;
S2, it is adjusted after sewage enter in the anoxic pond for delivering active biologic packing material, start mixer, make sewage with The microorganism of Active biological filler superficial growth is fully contacted, mixed, and denitrification is carried out by denitrifying bacteria;
S3, handled through anoxic pond after sewage self-flowing enter in Aerobic Pond, to the interior aeration of Aerobic Pond, sewage is by multiple folding Stream, is reacted in MBBR reactors;Make to circle round in mixed liquor of the filler in MBBR reactors the work of upset by aeration Moved freely under, sewage is continuously across the floating stuffing in MBBR reactors and gradually forms biology in filler surfaces externally and internally Film.
S4, handled through Aerobic Pond after water from sedimentation basin is flow to, dosing flocculation, floccule is deposited in precipitation through swash plate retention Pond bottom of pond, supernatant flow to MBR membrane cisternas certainly;
S5, supernatant after the filtration of MBR films, are pumped into apparatus for ultraviolet disinfection in MBR membrane cisternas by self priming pump Row is disinfected;
S6, disinfect after enter clear water reserviors, then from outflow water.
Further, in step S4, sludge reflux maintains the sludge concentration of anoxic pond into anoxic pond in sedimentation basin.
Further, in step S5, the second sludge pump set in MBR membrane cisternas, the mixed liquor that will filter out is promoted to scarce In oxygen pond, denitrification denitrification is further carried out.
The urban sewage treatment system and technique of the present invention, for processing sanitary sewage, its advantage is:1st, design is adopted Use B-M2Biologic treating technique, is that folded plate is set on MBBR Process ba- sis, the time of contact of increase sewage and filler, is greatly improved Sewage treating efficiency;2nd, while rearmounted MBR films, the comprehensive regulation organically combined using membrane separation technique and biologic treating technique Technique is good with treatment effeciency height, effluent quality;Facility compact, floor space are small;Easy realization is automatically controlled, operational management letter Single the advantages of;3rd, the total arrangement of sewage-treatment plant is rationally compact, the flow that strives for simplification, reduction energy consumption, saving construction investment, And should be harmonious, elegant in appearance with the device around built, generally structures modularization reduces the occupation of land face of processing system Product;4th, in the case where ensureing water outlet requirement, construction investment and operating cost are reduced as far as possible, it is ensured that the reliability of engineering and effectively Property, operating repairs quantities is reduced, improves operative's condition.
Brief description of the drawings
Fig. 1 is process flow diagram of the invention;
Fig. 2 is floor plan of the invention.
In figure, 1, regulating reservoir;2nd, anoxic pond;3rd, Aerobic Pond;4th, sedimentation basin;41st, flocculation medicine system;5th, sludge-tank;6、 MBR membrane cisternas;61st, back wash line;62nd, water outlet pipeline;63rd, suction pump;64th, flowmeter;65th, ultraviolet sterilization apparatus;7th, clear water Pond;8th, MBBR reactors;9th, plate-folding device;10th, grid;11st, mixer;12nd, air blower;13rd, micro-hole aerator;14th, first Sludge pump;15th, the second sludge pump;16th, the first equipment room;17th, the second equipment room.
Embodiment
With reference to embodiment, the present invention will be further described, but is not limited to the content on specification.
Embodiment one
A kind of urban sewage treatment system as depicted in figs. 1 and 2, the integrated equipment of the system, system includes the Include wrapping in anoxic pond 2, Aerobic Pond 3, sedimentation basin 4 and clear water reserviors 7, the second casing in one casing and the second casing, the first casing Regulating reservoir 1, MBR membrane cisternas 6 and sludge-tank 5 are included, regulating reservoir 1, anoxic pond 2, Aerobic Pond 3, sedimentation basin 4 and sludge-tank 5 pass through water pipe It is sequentially communicated, MBR membrane cisternas 6 are connected with sedimentation basin 5, clear water reserviors 7, anoxic pond 2 and sludge-tank 4 respectively.The porch of regulating reservoir 1 is set Have a grid 10, sewage before regulating reservoir 1 is flowed into through grid 10, for intercept suspension larger in filter sewage, floating object, The impurity such as hair and fiber;Sewage is entered in anoxic pond 2 by water pump lifting, and MBBR is provided with anoxic pond 2 and Aerobic Pond 3 It is additionally provided with reactor 8, Aerobic Pond 3 in plate-folding device 9, anoxic pond 2 and is provided with mixer 11, is carried out sewage stirring, make to hang Floating Active biological filler is fully contacted with sewage;Micro-hole aerator 13 is provided with Aerobic Pond 3, micro-hole aerator 13 is communicated with drum Blower fan 12, it is preferable that Aerobic Pond 3 is to be provided with 2.
Sedimentation basin 4 uses tube settler, and it is connected with flocculation medicine system 41 and MBR membrane cisternas 6.Sedimentation basin 4 passes through pond First sludge pump 14 of middle setting is connected with anoxic pond 2, for sludge in sedimentation basin 4 to be back in anoxic pond 2 again, is used for Sludge concentration is maintained, and carries out denitrification processing.
The second sludge pump 15 is provided with MBR membrane cisternas 6, for by the mixed-liquor return after being filtered in MBR membrane cisternas 6 to anoxic Pond 2 is reprocessed.MBR membrane cisternas 6 are connected by the independent two lines road of back wash line 61 and water outlet pipeline 62 with clear water reserviors 7 It is logical, suction pump 63, flowmeter 64 and ultraviolet sterilization apparatus 65 are provided with water outlet pipeline 62.Second is provided with MBR membrane cisternas 6 Sludge pump 15, is connected with this with anoxic pond 2 and sludge-tank 5.Water after processing is stored and recycled into clear water reserviors 7.
MBBR techniques are used in anoxic pond 2, specification is that there is material to be HDPE in 3000mm*3000mm*3300mm, pond The common 9m of suspended active biologic packing material3, filler is provided with the Inlet and outlet water of anoxic pond 2 and intercepts aperture plate, with stirring that anoxic pond 2 is connected Mix the power of machine 11 and use 0.75KW, residence time of the sewage in anoxic pond 2 is 3.8h.
MBBR techniques are used in Aerobic Pond 3, with folded plate technology, specification is in 4000mm*3000mm*3300mm, pond With the common 12m of suspended active biologic packing material that material is HDPE3, at the Inlet and outlet water of Aerobic Pond 3 need to equally be provided with filler blocks Cut the micro-hole aerator 13 set in aperture plate, pond and use EPDM/ABS, stay time of the sewage in Aerobic Pond 3 is 5h.
Sedimentation basin 4 is tube settler, and specification is 2000mm*3000mm*3300mm, and wherein honeycomb inclined-tube filler is 6m3, Stay time of the sewage in sedimentation basin 4 is 2.4h.The specification of clear water reserviors 7 is 1500mm*3000mm*3300mm.
The specification of regulating reservoir 1 is that supporting 3 sets of liquid-level floater is set in 4500mm*3000mm*3300mm, pond, and sewage is in regulation Stay time is 5.8h in pond 1.MBR membrane cisternas specification be 4500mm*3000mm*3300mm, supporting setting also include suction pump 2 Platform and sludge pump 2.
First casing and the second cabinet end portion are respectively arranged with the first equipment room 16 and the second equipment room 17, the first equipment room 16 and second equipment room 17 be used to place electrical equipment involved in the system be installed, make electrical equipment and live Sewage Environment It is isolated;The system equipment of the present invention also includes 2 sets of automatic control cabinet, the switch for controlling electrical equipment.
Embodiment two
A kind of urban sewage treatment process as shown in Figure 1, comprises the following steps:
S1, sewage are entered sewage lifting in grid 10 by sewage pump after collecting and collecting, then from inflow regulating reservoir 1 It is interior, carry out water quality, the regulation of water;
Sewage is entered sewage lifting after grid 10 by sewage pump after collecting and collecting, to intercept larger in sewage hang The impurity such as float, floating object, hair and fiber.
S2, it is adjusted after sewage enter in the anoxic pond 2 for delivering active biologic packing material, start mixer 11, make dirt Water is contacted with Active biological filler, mixed, and carries out denitrification;
Anoxic pond uses MBBR biological treatments, and the stirring of mixer 11 makes biologic packing material move freely, be evenly distributed, really Protecting sewage can fully contact with the microorganism of filler superficial growth, mix.Sewage is carried out in anoxic pond 2 by denitrifying bacteria Denitrification, makes the TN in waste water effectively be removed, while denitrification process, removes the major part in sewage COD。
S3, the sewage self-flowing after the processing of anoxic pond 2 enter in Aerobic Pond 3, are aerated into Aerobic Pond, and sewage is by multiple folding Stream, is reacted in MBBR reactors;
Aerobic Pond uses MBBR biological treatments, wherein water conservancy diversion folded plate technology is added, by setting folded plate to greatly increase The time of contact of sewage and floating stuffing in reactor, make the pollutants such as the COD in sewage, ammonia nitrogen thoroughly degraded and Remove.Micro-hole aerator 13 is set in Aerobic Pond, the dissolved oxygen needed for aerobe is on the one hand fully ensured that, on the other hand really Protecting suspended active biologic packing material can fully fluidize uniformly in pond, be made by aeration in mixed liquor of the filler in MBBR reactors Moved freely in the presence of convolution upset, sewage continuously across the floating stuffing in the MBBR reactors and gradually appearance in filler Face forms biomembrane.
S4, handled through Aerobic Pond after water from sedimentation basin is flow to, dosing flocculation, floccule retains sediment in heavy through swash plate Shallow lake pond bottom of pond, supernatant flow to MBR membrane cisternas certainly;
Sedimentation basin is inclined tube shallow lake pond, sets flocculation chemicals dosing plant, is sufficiently mixed using flocculant with sewage, increases suspension Interaction force between colloid, discrete particles, generation size and the larger flock of quality, then by the retention of inclined tube, make dirt Mud is precipitated, and supernatant is handled from MBR membrane cisternas are flow to;Preferably, the first sludge pump set in sedimentation basin, for inciting somebody to action Partial sludge is back in anoxic pond, maintains the sludge concentration of anoxic pond, and excess sludge is then discharged outward transport.
S5, supernatant are in MBR membrane cisternas after the filtration of MBR films, and carry out disinfection place into apparatus for ultraviolet disinfection Reason;Sedimentation basin water outlet accesses MBR membrane cisternas, and supernatant is pumped into apparatus for ultraviolet disinfection under the filtration of MBR films by self priming pump Carry out disinfection processing, the second sludge pump that MBR membrane cisternas are set, and for being promoted to anoxic pond through the MBR mixed liquors filtered out, enters one Step removes total nitrogen in water removal using denitrifying bacteria, and the excess sludge after filtering is emitted into sludge-tank, and sludge is regular in sludge-tank Outward transport.
S6, disinfect after enter clear water reserviors, then from outflow water.
The urban sewage treatment system and technique of the present invention, using B-M2Technique, i.e., by MBBR techniques and folded plate technology phase With reference to rear reconnection MBR techniques, the pollutant such as its organics removal, ammonia nitrogen, total nitrogen relies primarily on the life in PROCESS FOR TREATMENT unit Thing handling process.Its operation principle is:In anoxic pond section, because organic concentration is very high in sewage, microorganism is in anoxic shape State, now microorganism is aerobic-anaerobic microbe, and the organic nitrogen conversion in sewage is resolved into ammonia nitrogen by them, while using in sewage Organic carbon is as electron donor, by the NO in sewage2- N and NO3- N changes into N2, but also utilize part organic carbon source and then conjunction Cheng Xin cellular material.So, anoxic pond not only has certain organic matter removal function, mitigates the organic negative of follow-up Aerobic Pond Lotus, in favor of denitrification, the final eutrophication pollution for eliminating nitrogen;In Aerobic Pond section, due to organic concentration significantly Degree reduction, but still with the presence of a certain amount of organic matter and higher ammonia nitrogen, in order that organic matter obtains further oxidation Decomposition, Simultaneously carbonization be in complete in the case of nitrification can be smoothed out, in Aerobic Pond, relatively low good of organic loading is set Oxygen biochemical system, aerobic microbiological and autotroph-nitrifier are primarily present in Aerobic Pond section, wherein, aerobic microbiological will Organic matter resolves into CO2And H2O, autotroph decomposes the CO in the DIC produced or air using organic matter2It is used as nutrition Source, by the NH in sewage3- N changes into NO2- N and NO3- N, Aerobic Pond effluent recycling to anoxic pond provides electronics for anoxic pond and connect Acceptor, the pollution of nitrogen is finally eliminated by denitrification, so as to reach BOD, COD, ammonia nitrogen and TN etc. in final removal sewage The purpose of pollutant.
Sewage enters in MBR membrane bioreactors after biological treatment into the sewage self-flowing after tube settler carries out film The pollutants such as COD, SS in separating treatment, further removal sewage.
The processing system and technique of the present invention overcomes the pollutant caused in traditional wastewater processing equipment technological design Except the low defect of rate, B-MBBR biologic treating techniques are used in biochemical process section, are given birth to by adding suspended active in biological tank Thing filler, considerably increases the microorganism in reactor and microbial population, while setting what is coordinated with MBBR in Aerobic Pond section Plate-folding device, adds the steady contact time of sewage and biologic packing material, allows to the dirty water pollutant of fully contact, can make dirt Various pollutants in water are thoroughly degraded and removed, and strong guarantee is provided for stable water outlet qualified discharge.
Obviously, above-mentioned embodiment of the invention is only intended to clearly illustrate example of the present invention, and is not Restriction to embodiments of the present invention.For those of ordinary skill in the field, on the basis of the above description also It can make other changes in different forms.Here all embodiments can not be exhaustive.It is every to belong to this Row of the obvious changes or variations that the technical scheme of invention is extended out still in protection scope of the present invention.

Claims (10)

1. a kind of urban sewage treatment system, it is characterised in that the system is included in the first casing and the second casing, the first casing Including anoxic pond (2), Aerobic Pond (3), sedimentation basin (4) and clear water reserviors (7), include regulating reservoir (1), MBR membrane cisternas in the second casing (6) and sludge-tank (5), the regulating reservoir, anoxic pond, Aerobic Pond, sedimentation basin and sludge-tank are sequentially communicated by water pipe, described MBR membrane cisternas are connected with sedimentation basin, clear water reserviors, anoxic pond and sludge-tank respectively, and MBBR reactions are provided with anoxic pond and Aerobic Pond Plate-folding device (9) is additionally provided with device (8), Aerobic Pond.
2. urban sewage treatment system according to claim 1, it is characterised in that regulating reservoir porch is provided with grid (10)。
3. urban sewage treatment system according to claim 1, it is characterised in that mixer is provided with anoxic pond (11)。
4. urban sewage treatment system according to claim 1, it is characterised in that micro-hole aerator is provided with Aerobic Pond (13), micro-hole aerator is communicated with air blower (12).
5. urban sewage treatment system according to claim 1, it is characterised in that the first sludge pump is provided with sedimentation basin (14), the first sludge pump is connected by pipeline with anoxic pond.
6. urban sewage treatment system according to claim 1, it is characterised in that the second sludge is provided with MBR membrane cisternas Pump (15).
7. urban sewage treatment system according to claim 1, it is characterised in that the first casing and the second cabinet end part The first equipment room (16) and the second equipment room (17) are not provided with.
8. a kind of urban sewage treatment process, it is characterised in that comprise the following steps:
S1, sewage are entered sewage lifting in grid by sewage pump after collecting and collecting, and then from flowing into regulating reservoir, enter water-filling The regulation of matter, water;
S2, it is adjusted after sewage enter in the anoxic pond for delivering active biologic packing material, start mixer, make sewage and activity Biologic packing material contact, mixing, and carry out denitrification;
S3, handled through anoxic pond after sewage self-flowing enter in Aerobic Pond, by aeration make mixing of the filler in MBBR reactors Moved freely in liquid in the presence of convolution upset, sewage is continuously across the floating stuffing in MBBR reactors and gradually in filler Outer surface forms biomembrane;
S4, handled through Aerobic Pond after water from sedimentation basin is flow to, dosing flocculation, floccule retains sediment in sedimentation basin through swash plate Bottom of pond, supernatant flow to MBR membrane cisternas certainly;
S5, supernatant after the filtration of MBR films, are pumped into apparatus for ultraviolet disinfection by self priming pump and disappeared in MBR membrane cisternas Poison processing;
S6, disinfect after enter clear water reserviors, then from outflow water.
9. urban sewage treatment process according to claim 8, it is characterised in that in step S4, sludge is returned in sedimentation basin It flow in anoxic pond, maintains the sludge concentration of anoxic pond.
10. urban sewage treatment process according to claim 8, it is characterised in that in step S5, is set in MBR membrane cisternas The second sludge pump, the mixed liquor that will filter out is promoted in anoxic pond, further carries out denitrification denitrification.
CN201710709666.8A 2017-08-18 2017-08-18 Urban sewage treatment system and technique Pending CN107311405A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
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CN108218148A (en) * 2018-03-20 2018-06-29 青岛思普润水处理股份有限公司 A kind of efficient MBBR integrated sewage treating apparatus and method
CN108483664A (en) * 2018-06-27 2018-09-04 阿斯旺(北京)环保科技有限公司 A kind of moving-bed biofilm reaction equation sewage disposal system
CN108675453A (en) * 2018-07-20 2018-10-19 上海泓济环保科技股份有限公司 Villages and small towns decentralized type sewage treatment reactor and its sewage water treatment method
CN108975490A (en) * 2018-10-08 2018-12-11 天津城建大学 Separated type MBBR-MBR based on Internet of Things couples sewage disposal system
CN110183030A (en) * 2019-03-27 2019-08-30 广东技术师范学院天河学院 A kind of method of MBR biomembrane backwash decontamination
CN110550811A (en) * 2018-06-02 2019-12-10 无锡博美环境科技有限公司 A 2 O-MBBR sewage treatment plant with strengthen dephosphorization function
CN111606506A (en) * 2020-05-20 2020-09-01 苏州首创嘉净环保科技股份有限公司 Domestic sewage treatment equipment for enhancing denitrification through ultraviolet and hydrogen peroxide
CN111606505A (en) * 2020-05-20 2020-09-01 苏州首创嘉净环保科技股份有限公司 Sewage treatment equipment combining micro-nano bubbles and membrane bioreactor
CN112240049A (en) * 2020-10-14 2021-01-19 安徽汉威环境科技有限公司 Mechanical rain and sewage separator for buildings

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