CN107311405A - Urban sewage treatment system and technique - Google Patents
Urban sewage treatment system and technique Download PDFInfo
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- 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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- sedimentation basin
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- 239000010865 sewage Substances 0.000 title claims abstract description 98
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000011282 treatment Methods 0.000 title claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000012528 membrane Substances 0.000 claims abstract description 32
- 238000004062 sedimentation Methods 0.000 claims abstract description 29
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000010802 sludge Substances 0.000 claims description 29
- 239000000463 material Substances 0.000 claims description 13
- 238000012545 processing Methods 0.000 claims description 13
- 238000012856 packing Methods 0.000 claims description 10
- 238000005276 aerator Methods 0.000 claims description 9
- 238000007667 floating Methods 0.000 claims description 8
- 238000004659 sterilization and disinfection Methods 0.000 claims description 8
- 239000006228 supernatant Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 6
- 230000016615 flocculation Effects 0.000 claims description 6
- 238000005273 aeration Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000037452 priming Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 239000002574 poison Substances 0.000 claims description 2
- 231100000614 poison Toxicity 0.000 claims description 2
- 239000013049 sediment Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 244000005700 microbiome Species 0.000 description 7
- 239000003344 environmental pollutant Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000004700 high-density polyethylene Substances 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000002906 microbiologic effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 229920002943 EPDM rubber Polymers 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 125000001477 organic nitrogen group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/02—Aerobic processes
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F3/28—Anaerobic digestion processes
Landscapes
- 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
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.
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| CN201710709666.8A CN107311405A (en) | 2017-08-18 | 2017-08-18 | Urban sewage treatment system and technique |
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| CN201710709666.8A CN107311405A (en) | 2017-08-18 | 2017-08-18 | Urban sewage treatment system and technique |
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| 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 |
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| 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 |
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| 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 |
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