CN102633408B - Biochemical pre-treatment type membrane biological reaction sewage treatment device and method - Google Patents
Biochemical pre-treatment type membrane biological reaction sewage treatment device and method Download PDFInfo
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- CN102633408B CN102633408B CN 201210119559 CN201210119559A CN102633408B CN 102633408 B CN102633408 B CN 102633408B CN 201210119559 CN201210119559 CN 201210119559 CN 201210119559 A CN201210119559 A CN 201210119559A CN 102633408 B CN102633408 B CN 102633408B
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Abstract
The invention relates to a sewage treatment device and a sewage treatment method and particularly provides a biochemical pre-treatment type membrane biological reaction sewage treatment device and a method. The device comprises a membrane biological reactor (5); a biochemical pre-treatment unit is arranged in front of the membrane biological reactor; and the biochemical pre-treatment unit is composed of a sub-anaerobic unit (1), an oxygen-poor unit (2), an aerobic baffling unit (3) and a biological attaching unit (4), which are sequentially connected. The device is applicable to urban sewage treatment, and deep treatment and recycling treatment of a domestic sewage treatment plant, and is applicable to dispersion type sewage treatment, so as to realize dephosphorization and denitrification, and deep dephosphorization and denitrification, and obtain recycled water with the high quality; and the device is applicable to treatment on inorganic wastewater with high concentration, high salt amount, high ammonia nitrogen and the like, can more effectively remove matters which are difficult to degrade and the ammonia nitrogen, and further improves the treatment effect. The device can be used for various types of water treatments and can realize sludge reduction.
Description
Technical field
The present invention relates to waste disposal plant and method, a kind of biochemical pre-treatment type membrane biological reaction waste disposal plant and method are provided, be applicable to municipal sewage plant's advanced treatment and regeneration, be applicable to the decentralized type sewage processing, be applicable to high density, supersalinity, high ammonia nitrogen difficult degradation poisonous and harmful Industrial Wastewater Treatment and reuses such as petrochemical complex, Coal Chemical Industry, coking, textile printing and dyeing, papermaking, fine chemistry industry, agricultural chemicals, pharmacy, light industry, percolate.
Background technology
Waste water and Treatment for Reuse for municipal sewage treatment, sanitary sewage disposal factory advanced treatment and regeneration processing, decentralized type sewage processing, high density, supersalinity, high ammonia nitrogen difficult degradation organic industry, originally, the water treatment personnel mainly are with the reuse after lime clarification, chlorination are handled of biochemical secondary effluent, processing efficiency is low, misoperation and form chemical sludge easily and influence system operation; Along with the raising of reusing sewage standard, further remove the proposition that SS, colloid, macrobead organism and microbiology index etc. in the water require, advanced treatment process has turned to array configurations such as " coagulation-precipitations-filtration-sterilization ".Its processing cost is lower than the tap water price, though viable economically, this traditional technology efficient is lower, and water outlet can only be satisfied the lower reuse of water quality requirement, and as green land irrigation, and daily dispensing expense is higher.In addition, originally only to activated carbon filtration, the ozone and activated carbon technology used in the water treatment, also be applied to the treating processes of reuse water gradually.By activated carbon filtration to dirty waste water decolour, deodorizing and taste removal, and remove heavy metal, dissolved organic matter, agricultural chemicals and radioelement etc. in the dirty waste water effectively, though have advantages such as applied widely, that treatment effect good, can reuse.But the gac cost is very high, though can increase the service life by the method for regeneration, life cycle is still shorter.
The breakthrough of film manufacturing technology since the sixties in 20th century has driven the application of membrane technique in dirty waste water recycling, and therefore, (Membrane Bioreactor's a kind of novel water technology-membrane bioreactor MBR) arises at the historic moment.MBR refers to a kind of new sewage and waste water treatment device that super, microfiltration membrane isolation technique and bio-reactor in the sewage disposal are combined and form.This reactor combines the advantage that membrane technology and biologic treating technique bring.Super, micro-filtration membrane module has replaced second pond as the mud-water separation unit.Super, microfiltration membrane is held back in the active sludge intermixture microorganism flco and than larger molecular organics, make it to rest in the reactor, make to obtain high biological concentration in the reactor, and prolong the organic solid residence time, greatly improved microorganism to organic oxidation ratio.Simultaneously, after super, microfiltration membrane are handled, effluent quality height, directly water reuse in the conduct.Excess sludge that system arranges is few, and has higher impact resistance.
Patent application 200720130094 discloses integral type film biological reactor biotope sewage disposal device, it is characterized in that including sewage lagoon, the sewage lagoon feed-water end is equipped with trash rack, the sewage lagoon bottom is equipped with aeration head and is connected with aerating system, the outlet side of aeration head is equipped with film, the filler array of suspension is installed in the sewage lagoon, sewage draining exit is arranged at the sewage lagoon bottom, the water circulating pump feed-water end feeds in the sewage lagoon, water circulating pump water outlet termination separating film module, the outlet pipeline of separating film module is linked in the sewage lagoon, and the processing water out of separating film module enters water reservoir.
Patent application 200920052786 discloses a kind of membrane bioreactor waste disposal plant, comprise the equalizing tank, sandfiltration pot, membrane bioreactor and the water reservoir that are communicated with successively by pipeline, described membrane bioreactor comprises reaction box, film system, aerating apparatus and back-purge system, the film system is immersed in the reaction box, aerating apparatus is arranged on film system below, the film system comprises membrane module, aerating apparatus comprises aerated conduit, the corresponding setting with aerated conduit of membrane module, back-purge system is connected by pipeline with the film system.
Put undue emphasis on the advantage of MBR at present with regard to the research of MBR, and hidden the shortcoming of a lot of MBR, the domestic MBR example that has had, all in various degree exist process combination unreasonable, thereby cause seriously polluted, the shortcomings such as water flux is low, energy consumption height of film in various degree, limited applying of MBR technology.At present, the research of MBR is used and mainly concentrated on following three aspects: (1) seeks suitable process combination and working conditions and processing parameter; (2) reduce film and pollute, improve membrane flux; (3) running cost of reduction treatment process.General viewpoint thinks that film unit is the main part of technology, and the biochemical processing process before the film processing does not cause enough concerns.In fact when technological design moved, many also was simultaneously the target contaminant that arts demand is removed to the bigger pollutent of film pollution contribution, so it is most important to provide film to handle biochemical pretreatment unit and treatment process before.
Summary of the invention
At above-mentioned deficiency of the prior art, the present invention is improved on the basis of existing technology, a kind of biochemical pre-treatment type membrane biological reaction waste disposal plant and method are provided, be applicable to municipal sewage plant's advanced treatment and regeneration, be applicable to the decentralized type sewage processing, be applicable to high density, supersalinity, high ammonia nitrogen difficult degradation poisonous and harmful Industrial Wastewater Treatment and reuses such as petrochemical complex, Coal Chemical Industry, coking, textile printing and dyeing, papermaking, fine chemistry industry, agricultural chemicals, pharmacy, light industry, percolate.Biochemical pre-treatment type membrane biological reaction waste disposal plant of the present invention and method can effectively remove organism and hard-degraded substance, minimizing film pollute, improve membrane flux.
In order to solve the problems of the technologies described above, one of the technical solution adopted in the present invention is:
A kind of biochemical pre-treatment type membrane biological reaction waste disposal plant, comprise membrane bioreactor, be provided with biochemical pretreatment unit before membrane bioreactor, described biochemical pretreatment unit is connected to form successively by inferior anaerobic unit, anoxic unit, aerobic baffle unit and biological attachment unit;
Be provided with grid in the described inferior anaerobic unit, the top, bottom is provided with distinguishes the belt filler, and the top is provided with closed cover, and delivery pipe is installed on the closed cover, sidewall one side is equipped with the sludge circulation pump I for inferior anaerobic unit internal recycling, and the sidewall opposite side is equipped with mud return line a and bacterium liquid return line;
Described anoxic unit inside is provided with combined stuffing, and the bottom is provided with air stirring pipe, and sidewall one side is equipped with mud return line b and mud return line d;
Described aerobic baffle unit bottom is provided with first aerating apparatus, and the inwall both sides are respectively arranged with traverse baffle, the other arcuate island that is provided with of traverse baffle; Be provided with the slope that becomes angle with the bottom surface with the sidewall bottom of biological attachment units shared; Sidewall one side is provided with mud return line c and mud outlet pipe A, and mud outlet pipe A is communicated with the mud return line d of anoxic unit by sludge reflux pump III;
Described biological attachment unit bottom is provided with second aerating apparatus; Be provided with elastic filler above second aerating apparatus, sidewall one side is provided with bacterium liquid outlet pipe, and bacterium liquid outlet pipe is communicated with the bacterium liquid return line of inferior anaerobic unit by bacterium liquid reflux pump;
Membrane bioreactor sidewall one side is provided with mud outlet pipe B, and mud outlet pipe B is communicated with the mud return line a of inferior anaerobic unit, the mud return line b of anoxic unit and the mud return line c of aerobic baffle unit by sludge reflux pump II.
The bottom of described membrane bioreactor is provided with the 3rd aerating apparatus and air stirring pipe, and inside is provided with the vacuum fiber film component, and the top is provided with suction tube.
Described first aerating apparatus or second aerating apparatus or the 3rd aerating apparatus comprise aerator and the aerated conduit that links to each other with aerator.
Described grid is horizontalyl or vertically set in the inferior anaerobic unit, and the wall of grid is provided with water-in or water outlet (making water go to upper and lower the formula of seething flows).
The described belt filler of distinguishing begins to arrange from the bottom 0.8m-1m of inferior anaerobic unit, and the virtual height of distinguishing the belt filler is 2m-3m.
The angle of described slope is 50 °～60 °.
Technical scheme two of the present invention:
A kind of biochemical pre-treatment type membrane biological reaction sewage water treatment method, use above-mentioned waste disposal plant that sewage is handled, sewage is flowed into from water-in, advanced inferior anaerobic unit, anoxic unit, aerobic baffle unit, biological attachment unit and Membrane Bioreactor for Wastewater Treatment successively and get final product, the treatment time is with effluent quality chemical oxygen demand≤50mg/L, biological oxygen demand≤10mg/L on the 5th, total nitrogen≤15mg/L, total phosphorus≤1mg/L, suspended solids≤10mg/L, ammonia≤1mg/L is as the criterion.
The above-mentioned concrete control condition that sewage is handled is preferably: the hydraulic detention time 1h-5h of inferior anaerobic unit, dissolved oxygen≤0.3mg/L; The hydraulic detention time 1h-5h of anoxic unit, gas-water ratio 1-3:1, dissolved oxygen≤1.0mg/L; The hydraulic detention time of aerobic baffle unit is 5h-30h, dissolved oxygen 2mg/L～5mg/L, sludge concentration 2000mg/L～4000mg/L; The hydraulic detention time of biological attachment unit is 0.5h-3h, gas-water ratio 1-3:1, dissolved oxygen≤5mg/L; The hydraulic detention time of membrane biological reaction unit is 2h-20h, gas-water ratio: 20-25:1, dissolved oxygen≤1.5mg/L, sludge concentration 5000mg/L～6000mg/L.
Below the present invention is done further detailed explanation and explanation:
Waste disposal plant of the present invention mainly is to be inferior anaerobic technique (SA) to the traditional anaerobism technological improvement in the technical process; Be biological coherent film bioprocess technology (MAMBR) with general membrane bioreactor (MBR) technological improvement, (can be referred to as inferior anaerobic-aerobic baffling-biological attachment membrane bioreactor (MAMBR) again thereby formed biochemical pre-treatment type membrane biological reaction waste disposal plant of the present invention.It is good that this device has an effluent quality, saved second pond, and floor space is little, saves the characteristics of running cost.
(1) Biological Pretreatment of the present invention unit comprises having inferior anaerobic unit, has proposed the inferior anaerobism concept of dirty wastewater processing technology.Define the concept of inferior anaerobism and anaerobism, just must understand the path of anaerobe reaction.Usually, we are divided into four-stage to anaerobic reaction: the fs hydrolysis; The subordinate phase acidifying; Acid decline of phase III; The methanation of quadravalence section.At hydrolysis stage, solid matter is dissolved as dissolved matter, and macromolecular substance is degraded to small-molecule substance, and recalcitrant substance is converted into the readily biodegradable material.Viewpoint is in the past thought hydrolysis and produce acid and carry out comparatively fast, be difficult to they are separated, what work mainly is hydrolysis bacterium and acid-producing bacteria, painstakingly utilize preceding two sections of anaerobic technique, namely reaction was controlled before subordinate phase, do not enter the phase III, and inferior anaerobism concept enters into acid decline of phase III with biological respinse, so both can make the acidication effect of having reacted, that is: be small-molecule substance with macromolecules degradation, recalcitrant substance is converted into outside the readily biodegradable material, can also make inferior anaerobe bacterial classification have dominance and diversity, for example have a liking for temperature, halophilic bacterium kinds etc. are with further raising treatment effect.Inferior anaerobic reaction is than the time much shorter of anaerobic reaction, and anaerobic reaction takes several days time, and inferior anaerobic reaction needed only several hours.
Inferior anaerobic unit of the present invention (SA) realizes inferior anaerobic state by following design: vertical or horizontally in inferior anaerobic unit pond (for example be provided with grid (11), the size of inferior anaerobic unit is 4m * 4m, 100 of the grids of 0.4m * 0.4m can be set, form various micro-ecological environment), the wall of grid (11) is provided with water-in or water outlet, make water go to upper and lower the formula of seething and flow, to improve the fluidised form of water; The application grid can also make the bacterial classification of each sections such as acid gas, biogas separate (because micro-ecological environment difference of each grid) naturally, to cultivate and the inferior anaerobe bacterial classification of screening advantage, for example has a liking for temperature, halophilic bacterium kind etc.If the pond available depth is 4.5m, up 1m installs and distinguishes belt filler (14) at the bottom of the pond, and the filler virtual height is 2m, and the installation filler can increase microbial numbers.Chi Ding is closed cover, on the cover board is equipped with to deposit vapor pipe (19), to get rid of unnecessary acid gas, biogas.The other mud return line a(7-1 that is provided with in pond) [being back to inferior anaerobic unit (SA) (1) from membrane biological reaction unit (MBR) (5)] with acidification sludge, realizes sludge reduction.The other sludge circulation pump I(6 that low lift, big flow are installed in the pond), so that mud forms good suspended layer in the pond.Water inlet pipe (20) also is installed before the pond.Pool wall also is provided with active bacterium liquid return line (9-1) [being back to inferior anaerobic unit (SA) (1) from film biological attachment unit (MA) (4)] to improve the mud performance.On the basis of above-mentioned design, control dissolved oxygen≤0.3mg/L again, realize inferior anaerobic state.
(2) Biological Pretreatment of the present invention unit comprises anoxic unit (2), the top that air stirring pipe (12), air stirring pipe (12) are installed at the bottom of the pond of described anoxic unit (2) is equipped with combined stuffing (15), sewage backflow pipe d(8-1) [being back to anoxic unit (2) from aerobic baffling reaction member (OBR) (3)], to realize denitrogenation; Pool wall also is provided with mud return line b(7-2) [being back to anoxic unit (2) from membrane biological reaction unit (MBR) (5)], to realize advanced nitrogen and to clear up excess sludge, realize sludge reduction.
(3) Biological Pretreatment of the present invention unit comprises aerobic baffle unit (OBR) (3), be provided with arcuate island (3-2) by being provided with traverse baffle (3-1), traverse baffle (3-1) in the described aerobic baffle unit (OBR) (3), so that current form aerobic baffling and circulation continuously; It is 50 °～60 ° slope (18) that the terminal bottom in pond is provided with angle at the bottom of the pond, in order to collect mud and slip; Be provided with first aerating apparatus (13a) at the bottom of the pond; Pool wall is provided with mud return line c(7-3) [being back to aerobic baffle unit (OBR) (3) from membrane biological reaction unit (MBR) (5)], to replenish sludge concentration, strengthen sludge activity.The other sludge reflux pump (8) that is provided with in pond.
(4) the present invention also in the preceding biological attachment district (MA) that is provided with of membrane bioreactor (MBR), is equivalent to be provided with a buffer zone, pollutes to reduce film.Suspended particle greater than 1 μ m is adsorbed and filters.Be equivalent to be provided with in membrane bioreactor (MBR) front and alleviate the barrier that film pollutes together, and can react incomplete organism to pre-treatment and further degrade, to reduce the processing load of membrane bioreactor.
Bottom, pond, described biological attachment unit (MA) (4) is provided with second aerating apparatus (13b), and the top of second aerating apparatus (13b) is provided with elastic filler (16).The other bacterium liquid reflux pump (9) that is provided with in pond.There are two major functions biological attachment unit (MA) (5): 1) the further incomplete organism of oxidizing reaction; 2) adsorb, filter, stop the suspended particle that 1 μ m is above.
Compared with prior art, advantage of the present invention is:
1, the Biological Pretreatment unit has adopted inferior anaerobic technique (SA), rather than general anaerobic technique and acidication technology, compares with these two kinds of technologies, and it is handled organic clearance and wants height, energy-saving effect to get well.
2, be provided with biological attachment district (MA) in membrane bioreactor (MBR) front, its main purpose is that dirty waste water is after inferior anaerobism (SA) and aerobic baffle unit (OBR) processing, a small amount of biological respinse is incomplete, and degradation rate organism slowly continues to enter biological attachment unit (MA) and reacts degraded; Simultaneously, the suspended particle greater than 1 μ m is effectively adsorbed and filters, with the pressure of the processing load that alleviates membrane bioreactor, alleviate film and pollute, improve membrane flux.
3, biochemical pre-treatment type membrane biological reaction waste disposal plant of the present invention, as long as to parameter change and adjustment such as the hydraulic detention time of various processing units, dissolved oxygen, sludge concentrations, just can be used for the deep phosphorous removal denitrogenation that municipal sewage treatment, sanitary sewage disposal, decentralized type sewage are handled; Be used for the water Treatment for Reuse high-quality reuse water can be provided; Be used for treatment of Organic Wastewater such as high density, supersalinity, high ammonia nitrogen, can more effective removal hard-degraded substance and ammonia nitrogen, further improve treatment effect.
Description of drawings
Fig. 1 is plane structure chart of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
In the drawings: 1 is inferior anaerobic unit (SA); 2 is anoxic unit; 3 is aerobic baffle unit (OBR); 3-1 is traverse baffle; 3-2 is the other arcuate island of traverse baffle; 4 is biological adhesion unit (MA); 5 is membrane biological reaction unit (MBR); 6 is sludge circulation pump I; 7 is sludge reflux pump II; 7-1 is mud return line a; 7-2 is mud return line b; 7-3 is mud return line c; 8 is sewage backflow pump III; 8-1 is sewage backflow pipe d; 8-2 is mud outlet pipe A; 7-4 is mud outlet pipe B; 9 is bacterium liquid reflux pump; 9-1 is bacterium liquid return line; 9-2 is bacterium liquid outlet pipe; 10 are suction pump; 11 is grid; 12 is air stirring pipe; 13a is first aerating apparatus, and 13b is second aerating apparatus, and 13c is the 3rd aerating apparatus; 14 for distinguishing the belt filler; 15 is combined stuffing; 16 are elastic filler; 17 is hollow fiber film assembly; 18 is slope; 19 is vapor pipe; 20 is water inlet pipe.
Embodiment
Embodiment 1:
By Fig. 1 and Fig. 2 as can be known, a kind of biochemical pre-treatment type membrane biological reaction waste disposal plant, comprise membrane bioreactor (5), be provided with biochemical pretreatment unit before membrane bioreactor, described biochemical pretreatment unit is connected to form successively by inferior anaerobic unit (1), anoxic unit (2), aerobic baffle unit (3) and biological attachment unit (4);
Be provided with grid (11) in the described inferior anaerobic unit (1), bottom top is provided with commercially available DB type and distinguishes belt filler (14), and up 1m installation DB type is distinguished belt filler (14) at the bottom of the pond, and the filler virtual height is 2m; The top is provided with closed cover, and delivery pipe (19) is installed on the closed cover, and sidewall one side is equipped with the sludge circulation pump I(6 for inferior anaerobic unit (1) internal recycling), the sidewall opposite side is equipped with mud return line a(7-1) and bacterium liquid return line (9-1);
Described anoxic unit (2) inside is provided with commercially available SB type combined stuffing (15), and the bottom is provided with air stirring pipe (12), and sidewall one side is equipped with mud return line b(7-2) and mud return line d(8-1);
Described aerobic baffle unit (3) bottom is provided with first aerating apparatus (13a), and the inwall both sides are respectively arranged with traverse baffle (3-1), the other arcuate island (3-2) that is provided with of traverse baffle (3-1); Be provided with the slope (18) that becomes angle with the bottom surface, pond with the sidewall bottom that biological attachment unit (4) share; Sidewall one side is provided with mud return line c(7-3) and mud outlet pipe A(8-2), mud outlet pipe A(8-2) by sludge reflux pump III(8) with the mud return line d(8-1 of anoxic unit (2)) be communicated with;
Bottom, described biological attachment unit (4) is provided with second aerating apparatus (13b); Be provided with commercially available YDT type elastic filler (16) in the top of second aerating apparatus (13), sidewall one side is provided with bacterium liquid outlet pipe (9-2), and bacterium liquid outlet pipe (9-2) is communicated with the bacterium liquid return line (9-1) of inferior anaerobic unit (1) by bacterium liquid reflux pump (9);
Membrane bioreactor (5) sidewall one side is provided with mud outlet pipe B(7-4), mud outlet pipe B(7-4) by sludge reflux pump II(7) and with the mud return line a(7-1 of inferior anaerobic unit (1)), the mud return line b(7-2 of anoxic unit (2)) and the mud return line c(7-3 of aerobic baffle unit (3)) be communicated with.
The bottom of described membrane bioreactor (5) is provided with the 3rd aerating apparatus (13c) and air stirring pipe (12), and inside is provided with MOT IM0-MBR hollow fiber film assembly (17), and the top is provided with suction tube (10).
Described grid (11) is horizontalyl or vertically set in the inferior anaerobic unit (1), the size of inferior anaerobic unit is 4m * 4m, 100 of the grids of 0.4m * 0.4m are set, form various micro-ecological environment, the wall of grid is provided with water-in or water outlet, makes water go to upper and lower the formula of seething and flows;
Described first aerating apparatus or second aerating apparatus or the 3rd aerating apparatus (13a or 13b or 13c) comprise aerator and the aerated conduit that links to each other with aerator.
The angle of described slope (18) is 53 °.
Embodiment 2:
With embodiment 1 described biochemical pre-treatment type membrane biological reaction waste disposal plant municipal wastewater treatment plant advanced treatment and regeneration are handled; Sewage can be finished aerobic nitrification and anoxic denitrification and inferior anaerobic phosphorus release and four basic biochemical reactions of aerobic suction phosphorus after handling through inferior anaerobic unit (SA) (1), anoxic unit (2), aerobic baffle unit (3); Pass through again and can finish the deep phosphorous removal denitrogenation after biological attachment unit (MA) (4) and membrane biological reaction unit (MBR) handle, and can obtain high-quality reuse water.
1, influent quality: CODcr≤500mg/L, BOD5≤300mg/L, TN≤60mg/L, TP≤4mg/L, SS≤200mg/L.
2, operation process condition: the hydraulic detention time 2h of inferior anaerobic unit (SA) (1), dissolved oxygen≤0.3mg/L; The hydraulic detention time 1h of anoxic unit (2), gas-water ratio 1:1, dissolved oxygen 0.5～1.0mg/L; The hydraulic detention time of aerobic baffle unit (OBR) (3) is 8.5h, dissolved oxygen 2～4mg/L, sludge concentration 2500mg/L; The hydraulic detention time of biological attachment unit (MA) (4) is 0.5h, and gas-water ratio 2:1 is below the dissolved oxygen 5mg/L; The hydraulic detention time of membrane biological reaction unit (MBR) (5) is 4h, gas-water ratio: 20:1, dissolved oxygen 1.5mg/L, sludge concentration 5000～6000mg/L.
3, effluent quality: CODcr≤50mg/L, BOD5≤10mg/L, TN≤15mg/L, TP≤1mg/L, SS≤8mg/L, but water outlet reuse.
Embodiment 3:
With embodiment 1 described biochemical pre-treatment type membrane biological reaction waste disposal plant to high density, supersalinity, high ammonia nitrogen, the poisonous and harmful wastewater treatment of difficult degradation: through introducing digested sludge as seed sludge from certain petrochemical plant, dropping into inferior anaerobic unit (SA) (1) earlier takes to expose to the sun between inoculation, water inlet is dynamically cultivated continuously, after culturing sludge and the domestication, sewage is through inferior anaerobic unit (SA) (1), anoxic unit (2), aerobic baffle unit (3) can be finished aerobic nitrification and anoxic denitrification and inferior anaerobic phosphorus release and four basic biochemical reactions of aerobic suction phosphorus after handling; Pass through again and can finish the deep phosphorous removal denitrogenation after biological attachment unit (MA) (4) and membrane biological reaction unit (MBR) handle, and can obtain high-quality reuse water.
1, influent quality: PH=6～9, CODcr≤1500mg/L, BOD5≤760mg/L, NH3-N≤300mg/L, SS≤200mg/L.
2, operation process condition: inferior anaerobism (SA) (1) hydraulic detention time is 4h, dissolved oxygen≤0.3mg/L; Anoxic unit (2) hydraulic detention time is 4h, gas-water ratio 2:1, dissolved oxygen≤0.5～1.0mg/L; Aerobic baffle unit (OBR) (3) hydraulic detention time is 24h, dissolved oxygen pond first half 3～4mg/L, latter half 2.0mg/L; Sludge concentration 3500mg/L; Biological attachment unit (MA) (4) hydraulic detention time is 2h, gas-water ratio 2.5:1, dissolved oxygen≤5mg/L; Membrane biological reaction unit (MBR) hydraulic detention time is 12h, gas-water ratio 25:1, dissolved oxygen≤1.5mg/L, sludge concentration 5000～6000mg/L.
3, effluent quality: PH=6.5～7.5, CODcr≤50mg/L, BOD5≤10mg/L, TN≤15mg/L, NH3-N≤1.0mg/L, TP≤1mg/L, SS≤10mg/L, water outlet is as the make up water of industrial circulating cooling water.
Claims (8)
1. biochemical pre-treatment type membrane biological reaction waste disposal plant, comprise membrane bioreactor (5), it is characterized in that, be provided with biochemical pretreatment unit before membrane bioreactor, described biochemical pretreatment unit is connected to form successively by inferior anaerobic unit (1), anoxic unit (2), aerobic baffle unit (3) and biological attachment unit (4);
Be provided with grid (11) in the described inferior anaerobic unit (1), the top, bottom is provided with distinguishes belt filler (14), the top is provided with closed cover, delivery pipe (19) is installed on the closed cover, sidewall one side is equipped with the sludge circulation pump I(6 for inferior anaerobic unit (1) internal recycling), the sidewall opposite side is equipped with mud return line a(7-1) and bacterium liquid return line (9-1);
Described anoxic unit (2) inside is provided with combined stuffing (15), and the bottom is provided with air stirring pipe (12), and sidewall one side is equipped with mud return line b(7-2) and mud return line d(8-1);
Described aerobic baffle unit (3) bottom is provided with first aerating apparatus (13a), and the inwall both sides are respectively arranged with traverse baffle (3-1), the other arcuate island (3-2) that is provided with of traverse baffle (3-1); Be provided with the slope (18) that becomes angle with the bottom surface with the sidewall bottom that biological attachment unit (4) share; Sidewall one side is provided with mud return line c(7-3) and mud outlet pipe A(8-2), mud outlet pipe A(8-2) by sludge reflux pump III(8) with the mud return line d(8-1 of anoxic unit (2)) be communicated with;
Bottom, described biological attachment unit (4) is provided with second aerating apparatus (13b); Be provided with elastic filler (16) in the top of second aerating apparatus (13b), sidewall one side is provided with bacterium liquid outlet pipe (9-2), and bacterium liquid outlet pipe (9-2) is communicated with the bacterium liquid return line (9-1) of inferior anaerobic unit (1) by bacterium liquid reflux pump (9);
Membrane bioreactor (5) sidewall one side is provided with mud outlet pipe B(7-4), mud outlet pipe B(7-4) by sludge reflux pump II(7) and with the mud return line a(7-1 of inferior anaerobic unit (1)), the mud return line b(7-2 of anoxic unit (2)) and the mud return line c(7-3 of aerobic baffle unit (3)) be communicated with.
2. according to the described biochemical pre-treatment type membrane biological reaction waste disposal plant of claim 1, it is characterized in that, the bottom of described membrane bioreactor (5) is provided with the 3rd aerating apparatus (13c) and air stirring pipe (12), inside is provided with vacuum fiber film component (17), and the top is provided with suction tube (10).
3. according to claim 1 or 2 described biochemical pre-treatment type membrane biological reaction waste disposal plants, it is characterized in that described grid (11) is horizontalyl or vertically set in the inferior anaerobic unit (1), the wall of grid (11) is provided with water-in or water outlet.
4. according to claim 1 or 2 described biochemical pre-treatment type membrane biological reaction waste disposal plants, it is characterized in that, the described belt filler (14) of distinguishing begins to arrange from the bottom 0.8m-1m of inferior anaerobic unit (1), and the virtual height of distinguishing belt filler (14) is 2m-3m.
5. according to claim 1 or 2 described biochemical pre-treatment type membrane biological reaction waste disposal plants, it is characterized in that described first aerating apparatus (13a) or second aerating apparatus (13b) or the 3rd aerating apparatus (13c) comprise aerator and the aerated conduit that links to each other with aerator.
6. according to claim 1 or 2 described biochemical pre-treatment type membrane biological reaction waste disposal plants, it is characterized in that the angle of described slope (18) is 50 °～60 °.
7. biochemical pre-treatment type membrane biological reaction sewage water treatment method, it is characterized in that, right to use requires one of 1-4 described waste disposal plant that sewage is handled, sewage is flowed into from water-in (20), advanced inferior anaerobic unit (1) successively, anoxic unit (2), aerobic baffle unit (3), biological attachment unit (4) and membrane bioreactor (5) are handled and are got final product, treatment time is with effluent quality chemical oxygen demand≤50mg/L, biological oxygen demand≤10mg/L on the 5th, total nitrogen≤15mg/L, total phosphorus≤1mg/L, suspended solids≤10mg/L, ammonia≤1mg/L is as the criterion.
8. according to the described biochemical pre-treatment type membrane biological reaction sewage water treatment method of claim 7, it is characterized in that the concrete control condition that sewage is handled is: the hydraulic detention time 1h-5h of inferior anaerobic unit, dissolved oxygen≤0.3mg/L; The hydraulic detention time 1h-5h of anoxic unit, gas-water ratio 1-3:1, dissolved oxygen≤1.0mg/L; The hydraulic detention time of aerobic baffle unit is 5h-30h, dissolved oxygen 2mg/L～5mg/L, sludge concentration 2000mg/L～4000mg/L; The hydraulic detention time of biological attachment unit is 0.5h-3h, gas-water ratio 1-3:1, dissolved oxygen≤5mg/L; The hydraulic detention time of membrane biological reaction unit is 2h-20h, gas-water ratio: 20-25:1, dissolved oxygen≤1.5mg/L, sludge concentration 5000mg/L～6000mg/L.
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| CN 201210119559 CN102633408B (en) | 2012-04-23 | 2012-04-23 | Biochemical pre-treatment type membrane biological reaction sewage treatment device and method |
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| CN102838255B (en) * | 2012-08-23 | 2014-04-16 | 辽宁工程技术大学 | Cage-shaped filler type device for treating beer waste water in anaerobic-anoxic-aerobic mode and method for treating bear waste water by using device |
| CN103304100B (en) * | 2013-06-26 | 2014-04-30 | 中国水电顾问集团中南勘测设计研究院 | High-activity bio-bed sewage treatment intensification system and sewage treatment method |
| CN103288307B (en) * | 2013-07-01 | 2014-06-11 | 中国水电顾问集团中南勘测设计研究院 | Sewage biological treatment method and sewage biological treatment device for changing microbial quality |
| CN103539261A (en) * | 2013-09-25 | 2014-01-29 | 安徽省绿巨人环境技术有限公司 | Baffled combined membrane bioreactor |
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| CN115093084B (en) * | 2022-08-05 | 2023-05-05 | 四川省生态环境科学研究院 | Multi-point multi-groove synchronous electrochemical dephosphorization system and dephosphorization method thereof |
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