Urban sewage treatment system
It the utility model is related to technical field of sewage, more particularly to a kind of urban sewage treatment system.
City domestic sewage is mainly various detergent, sewage, rubbish and excrement used in urban life etc., is mostly nothing
The inorganic salts of poison, wherein more containing element ratios such as N, P, S, due to the remittance of the waste water such as household water, initial rainwater, washing,
Severely exceed N, P in sanitary sewage, the value of COD, BOD are also increasing, and sanitary sewage can result in pathogen contamination,
Oxygen enrichment pollution, acid-alkali salt pollution etc..
In recent years, the rate of economic development in China city is 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 are 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, mainly uses 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 inclined 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 flow back respectively, make full use of the microorganism in it, it is played one's part to the full, create good environmental condition easy to it is different when
The growth of the superior microorganism population of phase growth.Although but this processing method effect stability, cost is higher, and remove
Rate is relatively low, and BOD removal rates are only that 90%, COD removal rates are only 80%.Also there are completion time of project length, construction cost are higher at the same time
The problems such as.
Utility model content
Complicated for sewage disposal system construction project to solve the problems, such as in existing technology, treated sewage efficiency is low
The problems such as, the utility model provides a kind of rational deployment, total tune, the city dirt for reducing wastewater discharge to greatest extent
Water treatment system.
In order to achieve the above object, the utility model is achieved through the following technical solutions：
A kind of urban sewage treatment system, the system include the first babinet and the second babinet, include anoxic in the first babinet
Pond, aerobic tank, sedimentation basin and clear water reserviors, the second babinet is interior to include regulating reservoir, MBR membrane cisternas and sludge-tank, the regulating reservoir, anoxic
Pond, aerobic tank, 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, and MBBR reactors are provided with anoxic pond and aerobic tank, plate-folding device is additionally provided with aerobic tank.
Wherein, MBR is membrane bioreactor, and MBBR techniques are moving bed biofilm reactor technology, the utility model
Sewage disposal system designs B-M on MBBR Process ba- sis2Technique, i.e. folded plate type moving bed biofilm reactor, B-M2Technique
Have MBBR process characteristics concurrently, folded plate be separately set, increase the time of contact of sewage and filler, substantially increase sewage treating efficiency,
Reduce the floor space of processing system.
Further, regulating reservoir inlet is provided with grid.For filter larger suspended matter, floating material, hair and
The impurity such as fiber.
Further, mixer is provided with anoxic pond, the reaction in anoxic pond is fully carried out.
Further, micro-hole aerator is provided with aerobic tank, 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 babinet and the second cabinet end portion are respectively arranged with the first equipment room and the second equipment room.
The urban sewage treatment system of the utility model, to handle sanitary sewage, its advantage is：1st, design uses
B-M2Biologic treating technique, to set folded plate on MBBR Process ba- sis, increases the time of contact of sewage and filler, substantially increases
Sewage treating efficiency；2 while postposition MBR films, the Synthetic science and engineering for utilizing membrane separation technique to be organically combined with biologic treating technique
Skill is good with treatment effeciency height, effluent quality；Facility compact, floor space are small；Easy realization automatically controls, operational management is simple
The advantages that；3rd, the total arrangement of sewage-treatment plant is rationally compact, and the flow that strives for simplification, reduce energy consumption, save construction investment, and
The device that should be built with surrounding is harmonious, beautiful and generous, generally structures modularization, reduces the occupation of land face of processing system
Product；4th, ensure water outlet requirement in the case of, reduce construction investment and operating cost to the greatest extent, it is ensured that the reliability of engineering and effectively
Property, operating repairs quantities is reduced, improves operation condition.
Brief description of the drawings
Fig. 1 is the process flow diagram of the utility model；
Fig. 2 is the floor plan of the utility model.
In figure, 1, regulating reservoir；2nd, anoxic pond；3rd, aerobic tank；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.
The utility model is described further with reference to embodiment, but is not limited to the content on specification.
A kind of urban sewage treatment system as depicted in figs. 1 and 2, the system being integrated equipment, the system include the
One babinet and the second babinet, the first babinet is interior to include anoxic pond 2, aerobic tank 3, sedimentation basin 4 and clear water reserviors 7, is wrapped in the second babinet
Regulating reservoir 1, MBR membrane cisternas 6 and sludge-tank 5 are included, regulating reservoir 1, anoxic pond 2, aerobic tank 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.1 inlet of regulating reservoir is set
Have a grid 10, sewage before regulating reservoir 1 is flowed into through grid 10, for intercept suspended matter larger in filter sewage, floating material,
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 tank 3
Reactor 8, is additionally provided with plate-folding device 9 in aerobic tank 3, and mixer 11 is provided with anoxic pond 2, carries out sewage stirring, makes to hang
Floating Active biological filler comes into full contact with sewage；Micro-hole aerator 13 is provided with aerobic tank 3, micro-hole aerator 13 is communicated with drum
Wind turbine 12, it is preferable that aerobic tank 3 is to be provided with 2.
Sedimentation basin 4 uses inclined-tube sedimentation tank, 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 maintained
Sludge concentration, and carry 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 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.
Use MBBR techniques in anoxic pond 2, specification 3000mm*3000mm*3300mm, with material is HDPE's in 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, is stirred with what anoxic pond 2 was connected
Mix 11 power of machine and use 0.75KW, residence time of the sewage in anoxic pond 2 is 3.8h.
MBBR techniques are used in aerobic tank 3, with folded plate technology, specification 4000mm*3000mm*3300mm, in pond
With the common 12m of suspended active biologic packing material that material is HDPE3, at the Inlet and outlet water of aerobic tank 3 need to equally be provided with filler blocks
Aperture plate is cut, the micro-hole aerator 13 set in pond uses EPDM/ABS, and stay time of the sewage in aerobic tank 3 is 5h.
Sedimentation basin 4 is inclined-tube sedimentation tank, and specification 2000mm*3000mm*3300mm, wherein honeycomb inclined-tube filler are 6m3,
Stay time of the sewage in sedimentation basin 4 is 2.4h.The specification of clear water reserviors 7 is 1500mm*3000mm*3300mm.
1 specification of regulating reservoir is 4500mm*3000mm*3300mm, sets supporting 3 sets of liquid-level floater in pond, sewage is being adjusted
Stay time is 5.8h in pond 1.MBR membrane cisternas specification is 4500mm*3000mm*3300mm, and supporting setting further includes suction pump 2
Platform and sludge pump 2.
First babinet 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 installation the system, make electrical equipment and live Sewage Environment
It is isolated；The system equipment of the utility model further includes 2 sets of automatic control cabinet, for controlling the switch of electrical equipment.
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 the adjusting of water quality, water；
After sewage lifting is entered grid 10 by sewage after collecting and collecting by sewage pump, to intercept larger in sewage hang
The impurity such as float, floating material, hair and fiber.
S2, it is adjusted after sewage be lifted into by sewage pump in the anoxic pond 2 for launching active biologic packing material, start
Mixer 11, makes sewage contact, mix with Active biological filler, 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
The microorganism that protecting sewage can grow with filler surface comes into full contact with, mixes.Sewage carries out in anoxic pond 2 by denitrifying bacteria
Denitrification, makes the TN in waste water effectively be removed, and while denitrification process, removes the major part in sewage
S3, the sewage self-flowing after the processing of anoxic pond 2 enter in aerobic tank 3, are aerated into aerobic tank, and sewage is by repeatedly folding
Stream, is reacted in MBBR reactors；
Aerobic tank 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 tank, on the one hand fully ensures that the dissolved oxygen needed for aerobe, 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 under the action of convolution upset, continuously across the floating stuffing in the MBBR reactors and gradual appearance in filler of sewage
Face forms biomembrane.
S4, the water after aerobic tank is handled are from sedimentation basin is flow to, and dosing flocculation, floccule is through inclined plate retention sediment in heavy
Shallow lake pond bottom of pond, supernatant flow to MBR membrane cisternas certainly；
Sedimentation basin is inclined-tube sedimentation tank, sets flocculation chemicals dosing plant, is sufficiently mixed using flocculant and sewage, increase suspends
Interaction force between thing colloid, discrete particles, generates size and the larger flock of quality, then the retention by inclined tube, makes
Sludge settling is handled in bottom of pond, supernatant from MBR membrane cisternas are flow to；Preferably, the first sludge set in sedimentation basin
Pump, for partial sludge to be discharged into anoxic pond, maintains the sludge concentration of anoxic pond, 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
Sedimentation basin water outlet accesses MBR membrane cisternas, and supernatant is pumped into ultraviolet under the filtration of MBR films, by self priming pump and disappears
Malicious device carries out disinfection processing, and MBR membrane cisternas set the second sludge pump, and the mixed liquor for being filtered out through MBR is promoted to anoxic pond,
Total nitrogen in water removal further is removed using denitrifying bacteria, the excess sludge after filtering is emitted into sludge-tank, sludge in sludge-tank
Periodically outward transport.
S6, enter clear water reserviors after disinfecting, then from outflow water.
The urban sewage treatment system of the utility model, using B-M2Technique, i.e., mutually tie MBBR techniques and folded plate technology
The reconnection pollutant such as MBR techniques, its organics removal, ammonia nitrogen, total nitrogen relies primarily on the biology in process unit after conjunction
Treatment process.Its operation principle is：In anoxic pond section, since organic concentration is very high in sewage, microorganism is in anaerobic condition,
Microorganism is aerobic-anaerobic microbe at this time, and the organic nitrogen conversion in sewage is resolved into ammonia nitrogen by them, while utilizes having in sewage
Machine 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 synthesis
New cellular material.So anoxic pond not only has the function of certain organic matter removal, mitigate the organic negative of follow-up aerobic tank
Lotus, in favor of denitrification, the final eutrophication pollution for eliminating nitrogen；In aerobic tank section, due to organic concentration significantly
Degree reduces, but still with the presence of a certain amount of organic matter and higher ammonia nitrogen, in order to make organic matter obtain further oxygenolysis,
At the same time carbonization be in complete in the case of nitrification can be smoothed out, in aerobic tank, relatively low good of organic loading is set
Oxygen biochemical system, aerobic microbiological and autotroph-nitrifier are primarily present in aerobic tank section, wherein, aerobic microbiological will
Organic matter resolves into CO2And H2O, autotroph decompose the CO in the inorganic carbon produced or air using organic matter2As nutrition
Source, by the NH in sewage3- N changes into NO2- N and NO3- N, aerobic tank effluent recycling to anoxic pond, provides electronics for anoxic pond and connects
Acceptor, the pollution of nitrogen is finally eliminated by denitrification, so that reaching final removes BOD, COD, ammonia nitrogen and TN etc. in sewage
The purpose of pollutant.
Sewage enters in MBR membrane bioreactors after biological treatment into the sewage self-flowing after inclined-tube sedimentation tank carries out film
The pollutant such as separating treatment, further COD, SS removed in sewage.
The treatment technology of the utility model overcomes pollutant removal caused by traditional wastewater processing equipment technological design
The defects of rate is low, B-MBBR biologic treating techniques are used in biochemical process section, by adding suspended active biology in biological tank
Filler, considerably increases the microorganism in reactor and microbial population, while the folding coordinated with MBBR is set in aerobic tank section
Panel assembly, adds the steady contact time of sewage and biologic packing material, allows to come into full contact with dirty water pollutant, can make sewage
In various pollutants thoroughly degraded and removed, strong guarantee is provided for stable water outlet qualified discharge.
Obviously, the above embodiment of the utility model is only intended to clearly illustrate the utility model example,
And it is not the restriction to the embodiment of the utility model.For those of ordinary skill in the field, stated upper
It can also be made other variations or changes in different ways on the basis of bright.Here all embodiments can not be given thoroughly
Lift.It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in the utility model
Protection domain row.