CN110526497A - A kind of wastewater treatment equipment and method based on MBR in conjunction with ozone multi-point adding - Google Patents
A kind of wastewater treatment equipment and method based on MBR in conjunction with ozone multi-point adding Download PDFInfo
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- CN110526497A CN110526497A CN201910779614.7A CN201910779614A CN110526497A CN 110526497 A CN110526497 A CN 110526497A CN 201910779614 A CN201910779614 A CN 201910779614A CN 110526497 A CN110526497 A CN 110526497A
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 158
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 197
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 84
- 239000012528 membrane Substances 0.000 claims abstract description 72
- 230000003197 catalytic effect Effects 0.000 claims abstract description 69
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000006555 catalytic reaction Methods 0.000 claims description 6
- 238000006385 ozonation reaction Methods 0.000 claims description 5
- 239000010802 sludge Substances 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 239000000126 substance Substances 0.000 abstract description 29
- -1 hydroxyl radical free radical Chemical class 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 7
- 150000003384 small molecules Chemical class 0.000 abstract description 7
- 239000002351 wastewater Substances 0.000 description 23
- 239000003245 coal Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000001223 reverse osmosis Methods 0.000 description 5
- 239000007900 aqueous suspension Substances 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 239000000084 colloidal system Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000000108 ultra-filtration Methods 0.000 description 3
- 239000002033 PVDF binder Substances 0.000 description 2
- 230000003851 biochemical process Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000001728 nano-filtration Methods 0.000 description 1
- 238000013486 operation strategy Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000725 suspension 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biodiversity & Conservation Biology (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses a kind of wastewater treatment equipment and method based on MBR in conjunction with ozone multi-point adding.The wastewater treatment equipment includes: membrane bioreactor, suction pump, film water outlet promotes pond, film is discharged elevator pump, catalytic reactor, discharge pond；The water of Membrane Bioreactor for Wastewater Treatment is directly connected to water outlet suction pump by film collector pipe, leads to film water outlet through suction pump and promotes pond, the input end of catalytic reactor is promoted to by pump, by catalytic reactor treated water drains into discharge pond.The catalytic reactor is duct type mixing reactor, its water inlet end configured with hydrogen peroxide chemicals dosing plant, mixed zone is configured in it, ozone to be mixed with hydrogen peroxide adequately, is reacted, ozone generates hydroxyl radical free radical under the action of hydrogen peroxide, so that macromolecular hardly degraded organic substance is degraded to small-molecule substance, CO in water2And water, the water after reacted area's reaction drain into discharge pond by water outlet.
Description
Technical field
The present invention relates to a kind of field of waste water treatment, are specifically related to a kind of based on membrane bioreactor (MBR) and ozone
The wastewater treatment equipment and method that multi-point adding combines.
Background technique
Coal chemical industry enterprises are to use water rich and influential family, for the increasingly raising in short supply and environmental requirement of current water resource, coal chemical industry
The waste water that enterprise can generate source is handled, and recycles this part water resource using bi-membrane method by the waste water handled.
But since itself is unable to satisfy water outlet using traditional biochemical process in the presence of the biochemical difficult characteristic thoroughly degraded in coal chemical industrial waste water
It is directly entered reuse water system, and there are technical bottlenecks and technical risk for traditional sewage treatment process.Waste water not up to standard into
Entering subsequent reuse water system causes the dirt of organic pollution, suspended solids and colloid stifled.
The organic pollutant being dissolved in waste water is that current reverse osmosis membrane is most difficult to solve the problems, such as, ultrafiltration is only capable of shutting off
A small amount of larger molecular organics or the non-solubility organic matter greater than ultrafiltration membrane aperture in water, most relatively small molecular weight it is organic
Object passes through ultrafiltration membrane and causes reverse osmosis membrane dirt stifled, leads to the slump of disastrous proportions of reverse osmosis membrane performance, and such as reverse osmosis membrane salt rejection rate produces water
Rate is quickly greatly reduced.And suspended solid and colloid pollution seriously affect reverse osmosis and nanofiltration membrane component runnability, mainly
It shows as producing water flow reduction, the increase of membranous system pressure difference, the salt rejection rate for influencing film.So reasonably selection technique is with more effective
COD, suspended matter and the colloid for reducing biochemical system water outlet become the primary problem of coal chemical industry used water difficult to degradate project.
Coal chemical industry used water difficult to degradate biodegradability is poor, such as using conventional biochemical processing such as anoxic/aerobic method (A/O), sequence
After batch reactor technique (SBR), can not further be had using biofilm such as bio-contact oxidation, Gas biological filter
Effect degradation COD, aqueous suspension, turbidity are undesirable out, need to be arranged high efficiency clarification tank, mechanical filter technique, advanced oxygen
Chemical industry skill just can ensure that the water quality into reuse water treatment system, and technique is tediously long, operating cost is high, maintenance management is at high cost.
Common high-level oxidation technology has ozone high grade oxidation, Fenton improved method technique etc., and operation strategies are wider, technology at
It is ripe and reliable and stable.It usually requires using more extensive coal chemical industry used water difficult to degradate qualified discharge technique by the advanced oxygen of ozone
Change to ensure that organic concentration is up to standard in waste water, in traditional ozone contact process, ozone utilization rate is low, energy consumption is high, processing
Effect is unstable, and needs to be arranged the biggish concrete reaction tank of occupied area, and outlet effect is poor.In addition, conventional biochemical work
Skill water outlet is not preprocessed be directly entered advanced oxidation system can generate it is serious dirty stifled.In addition, Fenton improved method technique can be made
At chemical sludge amount, big, chemical agent is added at high cost, and mating structures and equipment are more, and the soluble solid for increasing waste water contains
Amount, it is uneconomical and unsuitable.
Summary of the invention
In view of this, existing processing unit there are aiming at the problem that, the application proposes a kind of based on membrane bioreactor
And the wastewater treatment equipment that ozone multi-point adding combines, the processing method of the processing unit is simple, for improving coal chemical industry difficulty drop
The treatment effeciency of solution waste water, outlet effect is good, process flow is brief, operating cost is low and high degree of automation.
To achieve the above object, the application uses following scheme,
A kind of wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding, which is characterized in that include membrane biological reaction
Device, suction pump, catalytic reactor, discharge pond,
The membrane bioreactor has water outlet, is configured at membrane module top, one end of junctional membrane collector pipe, film
The other end of collector pipe is connected to suction pump,
The catalytic reactor has water inlet, is connected to suction pump by pipeline, water outlet is connected by pipeline
To discharge pond, a plurality of ozone add port, into the pipe of the catalytic reactor injection of ozone, hydrogen peroxide add
Port is located near water inlet, to inject hydrogen peroxide into the pipe of the catalytic reactor, wherein passes through membrane bioreaction
Catalytic reactor is extracted through the suction pump and led to the water for answering device to handle out, handles in catalytic reactor through catalytic ozonation
Water afterwards drains into discharge pond by its outlet.
Preferably, each ozone adds the ozone dosage of port between 20mg/L~80mg/L.
Preferably, which also includes that film water outlet promotes pond, and the water of the Membrane Bioreactor for Wastewater Treatment passes through
Suction pump leads to film water outlet and promotes pond；
Film be discharged elevator pump, have the first water inlet end, its by pipeline be connected to film water outlet promoted pond in, first be discharged
End, the water inlet of catalytic reactor is connected to by pipeline, is promoted to catalysis reaction film to be discharged to the water promoted in pond
Device.
Preferably, a plurality of ozone add the total ozone dosage in port between 0~240mg/L.
Preferably, the dosage of the ozone and hydrogen peroxide adds mass ratio between 2~3:1.
Preferably, the dosage of the ozone and hydrogen peroxide adds mass ratio 2.83:1.
Preferably, it is 0.09MPa which, which adds pressure,.
Preferably, which uses duct type mixing reactor, includes, and water inlet, water outlet, the first ozone are thrown
Add port, the second ozone to add port, third ozone adds port, wherein, the first ozone adds port, the second ozone adds end
Mouthful, third ozone add port and pass through pipeline respectively and be connected to ozone generator, nearby be configured with hydrogen peroxide adds end to water inlet
Mouthful, the catalytic reactor operation when water catalytic reactor flow to by water inlet, port is added into water by hydrogen peroxide and is infused
Enter hydrogen peroxide, the first ozone adds port, the second ozone adds port, third ozone adds port in the water respectively into pipeline
Injection of ozone.
Preferably, it is smelly that the water which adds that port adds between port with the second ozone flows through distance L1 and second
Oxygen adds the water that port adds between port with third ozone, and to flow through distance L2 equal.
Preferably, which adds port water between water inlet and flows through distance L3 and water inlet to water between water outlet
The ratio of the distance L flowed through is between 0.3~0.7.
The embodiment of the present application also provides a kind of wastewater treatment method based on MBR in conjunction with ozone multi-point adding, feature
It is, is comprised the steps of: comprising such as wastewater treatment equipment of any of claims 1-8, the method
S1. water to be processed flows into membrane bioreactor；
S2. water is carried out in membrane bioreactor based on membrane bioreactor water to separate with activated sludge；
S3. the water after separating is promoted to catalytic reactor, and the catalytic reactor is passing through water inlet while water inlet
The hydrogen peroxide of mouth side adds end and adds hydrogen peroxide into pipe, and ozone is added into pipe at a plurality of ozone toss areas；
S4. the water by catalytic reactor processing is drained into discharge pond.
Preferably, water water flow velocity in the pipeline of catalytic reactor between 1~3m/s, each ozone adds port in the S3
Ozone dosage is between 20mg/L~80mg/L.
Beneficial effect
Compared with the existing technology, the application embodiment has the advantages that
1) in the case where using membrane bioreactor effluent COD concentration is low, concentration of suspension is low and turbidity is low, membrane module goes out
Water is directly entered catalytic reactor, saves the techniques such as sedimentation basin, filtering, saves occupied area, saves civil engineering pool capacity, process flow
Simply, high degree of automation, reduction operating cost and investment.
2) catalytic reactor for using tube shaped, can according to need flexible design, easy for installation, occupied area is more
It is small.During the reaction, ozone contacts more accurate abundant with waste water, hydrogen peroxide, more conducively generation hydroxyl radical free radical, energy of oxidation
Power is strong, while the reactor servicing is simple, long service life.
Detailed description of the invention
According to below with reference to the accompanying drawings becoming to detailed description of illustrative embodiments, other feature of the invention and aspect
It is clear.
Comprising in the description and constitute the attached drawing of part of specification and specification together illustrate it is of the invention
Exemplary embodiment, feature and aspect, and principle for explaining the present invention.
Fig. 1 is the process flow diagram of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the wastewater treatment equipment of the embodiment of the present invention；
Fig. 3 is the structural schematic diagram of catalytic reactor in Fig. 2；
Fig. 4 is the processing method flow diagram of the wastewater treatment equipment of the embodiment of the present invention.
Specific embodiment
Below with reference to attached drawing various exemplary embodiments, feature and the aspect that the present invention will be described in detail.It is identical in attached drawing
Appended drawing reference indicate element functionally identical or similar.Although the various aspects of embodiment are shown in the attached drawings, remove
It non-specifically points out, it is not necessary to attached drawing drawn to scale.
The application proposes a kind of waste water for being based on membrane bioreactor (MBR) and ozone multi-point adding (injection) catalysis oxidation
Processing unit, which includes: membrane bioreactor (MBR), suction pump, film water outlet promotes pond, film water outlet is promoted
Pump, catalytic reactor, discharge pond；When the device is run, the water by Membrane Bioreactor for Wastewater Treatment leads to film through suction pump and goes out
Water promotes the water inlet for being promoted to catalytic reactor in pond through film water outlet elevator pump again, through O in catalytic reactor3/H2O2Processing
Heel row is to discharging pond.The catalytic reactor is duct type structure, and it includes configure the hydrogen peroxide dosing end near water inlet
Mouthful, there are multiple ozone to add port, ozone, H in catalytic reactor2O2, water be sufficiently mixed, ozone is under the action of hydrogen peroxide
Hydroxyl radical free radical is generated, macromolecular hardly degraded organic substance in water is made to be degraded to small-molecule substance, CO2And water, after degradation
Water is discharged by water outlet.Preferably, the matched suction pump of membrane module can operate normally in membrane module and in the case where do not clean,
It is connected directly to the import of catalytic reactor, treated that water is not discharged into that film water outlet promotes pond through MBR in this way, is directly entered catalysis
Reactor.Depositing technology is saved in this way, and simple process, aqueous suspension and turbidity are low out, effectively improve the anti-of catalytic ozonation
Answer efficiency.
Next the operation of the wastewater treatment equipment of the application embodiment proposition is described in conjunction with Fig. 1, process is as follows: film
Bioreactor (MBR) treated water outlet passes through negative-pressure ward by the matched suction pump of membrane module, catchments manifold by film
The General Logistics Department is discharged into film water outlet and promotes pond.Water carries out water in membrane bioreactor and separates with activated sludge.Water after separation is directed to
Film water outlet promotes pond.In one embodiment, membrane bioreactor (MBR) treated water outlet be connected directly to catalytic reactor
Import.Membrane module can be efficiently separated by solid-liquid separation, and effluent quality is good, stablizes, and aqueous suspension and turbidity are low out.Catalysis is anti-
It answers device while water inlet, hydrogen peroxide is added near its water inlet, adds (injection) into pipe by multiple ozone toss areas
Ozone, such water, ozone, hydrogen peroxide are sufficiently mixed, and ozone generates hydroxyl radical free radical under the action of hydrogen peroxide, are made big in waste water
Molecule hardly degraded organic substance is degraded to small-molecule substance, CO2And water, water outlet direct emission or can drain into recycle-water processing system
System.
It is illustrated in figure 2 at the waste water of the application embodiment combined based on membrane bioreactor and ozone multi-point adding
Manage the structural schematic diagram of device, the wastewater treatment equipment, comprising:
Membrane bioreactor 1, suction pump 2, film water outlet promote pond 3, film water outlet elevator pump 4, catalytic reactor 5, discharge water
Pond 6,
Wherein, membrane bioreactor 1 has water outlet, is configured at membrane module top, one end of junctional membrane collector pipe,
The other end of film collector pipe is connected to suction pump 2, and the water handled by membrane bioreactor 1 is directly directed to by film collector pipe
Suction pump 2 leads to film water outlet through suction pump 2 and promotes pond 3,
Film be discharged elevator pump 4, have the first water inlet end, its by pipeline be connected to film water outlet promoted pond 3 in, first be discharged
End is connected to the water inlet of catalytic reactor 5 by pipeline, and water is promoted in catalytic reactor 5 by film water outlet elevator pump 4,
Water introduces discharge pond 6 by pipeline by its water outlet in the water that catalytic reactor 5 is handled through catalytic ozonation.This embodiment party
In formula, for total ozone dosage between 0~240mg/L, each ozone adds the ozone dosage of port between 20~80mg/L.
Water in pipeline the residence time between 1~10min, O3/H2O2Add 2~3:1 of mass ratio (in present embodiment, O3/H2O2's
Add mass ratio 2.83:1).It is 0.09MPa that ozone, which adds pressure, to overcome the head loss in catalytic reactor, operation catalysis
Ozone liquid rotary compressor need to be started while reactor reaction, the pressure at expulsion of ozone is promoted to 0.15MPa, can smoothly by
Ozone is added in reactor.Usually water to be processed flows into before MBR in advance the dirt through biochemistry pool biochemical treatment, in biochemistry pool
Mud concentration is high, organic removal rate is high, and UF membrane makes the ingredient difficult to degrade of the macromolecular in sewage, in the membrane bioreaction of finite volume
Answering in device has enough residence times, is conducive to the culture of obligate bacterium, substantially increases the degradation efficiency of hardly degraded organic substance.Film
Bioreactor includes the membrane module in membrane bioreactor comprising PVDF doughnut membrane material.
It is illustrated in figure 3 the structural schematic diagram of catalytic reactor, which uses duct type mixing reactor,
It include that water inlet 51, water outlet 52, the first ozone add port 53, the second ozone adds port 54, third ozone adds port
55, wherein, which adds port 53, the second ozone adds port 54, third ozone adds port 55 and passes through pipe respectively
Road is connected to ozone generator (not shown), and water inlet 51 is nearby configured with H2O2(also referred to as hydrogen peroxide) adds port 56, such water
It is flow to catalytic reactor by water inlet 51, while passing through H2O2It adds port and injects H into water2O2, reactor leading portion be equipped with
Mixed zone, the first ozone add port 53, the second ozone adds port 54, third ozone adds port 55 and injects respectively into water
Ozone, such ozone, H2O2, water be sufficiently mixed, ozone generates hydroxyl radical free radical under the action of hydrogen peroxide, makes in (useless) water big
Molecule hardly degraded organic substance is degraded to small-molecule substance, CO2And water, the water after degradation can be arranged directly by water outlet 52
It puts.In present embodiment, ozone dosage is adjustable as 0~240mg/L, preferably, water flow velocity is situated between in catalytic reactor pipeline
In 1~3m/s, such design, so that residence time of the water in reactor between 1~10min, guarantees that it is adequately reacted.
O3/H2O2Add 2~3:1 of mass ratio (in present embodiment, O3/H2O2Add mass ratio 2.83:1).The catalytic reactor
When operation due to water have certain flow rate therefore ozone injection when need certain pressure, preferably, ozone adds pressure is
0.09MPa.To overcome the head loss in catalytic reactor, operation catalytic reactor need to start ozone pendular ring pressure while reaction
Contracting machine, by the pressure at expulsion of ozone between 0.1MPa~0.3MPa, preferably, the pressure at expulsion 0.15MPa of ozone.This embodiment party
In formula, the first ozone adds port, the second ozone adds port, third ozone adds port assignment matching connection ozone pendular ring pressure
Contracting machine, ozone metering device, gas-liquid separator, tubular heat exchanger (not shown).In other embodiments, depending on applied field
It closes the multiple ozone of configuration and adds port.
In one embodiment, the first ozone add port and the second ozone add port between distance L1 (i.e. water is in pipe
Port, which is added, from the first ozone in road flow to the distance that the second ozone adds port) port and third ozone are added with the second ozone
Adding distance L2 that the water between port flows through, (i.e. water, which adds port from the second ozone in pipeline and flow to third ozone, adds port
Distance) it is equal/roughly equal.Third ozone adds port distance L3 (mode same L1, L2) and water inlet between water inlet
The ratio of 51 to distance L between water outlet 52 (mode same L1, L2) is between 0.3~0.7.Such design is so that third ozone adds
Ozone and water have sufficient time mixing and mixed react after the injection of ozone of port.Preferably, water inlet on horizontal position
51 with the first ozone to add port 53 same or about.
In one embodiment, suction pump 2 matched with membrane module can be the case where membrane module be operated normally and is not cleaned
Under, it is connected directly to 5 import of catalytic reactor, the water of membrane module processing is not discharged into film water outlet and promotes pond 3.
In one embodiment, water outlet is matched by membrane module after coal chemical industry used water difficult to degradate enters membrane bioreactor
Negative-pressure ward is passed through in suction pump, and film water outlet is discharged into after film collector pipe summarizes and promotes pond.Film water outlet promotes waste water lifting in pond
To catalytic reactor.While catalytic reactor is intake, ozone is added in multiple ozone toss areas of reactor, hydrogen peroxide adds
In the water inlet end of reactor, water, ozone, hydrogen peroxide are sufficiently mixed, and ozone generates hydroxyl radical free radical under the action of hydrogen peroxide, are made
Macromolecular hardly degraded organic substance is degraded to small-molecule substance, CO in waste water2And water, water outlet can direct emissions.Ozone adds
100mg/L is measured, the reaction time may be configured as 5min, O3/H2O2Add mass ratio 2.83:1.While catalytic reactor reacts
Ozone liquid rotary compressor need to be started, the pressure at expulsion of ozone is promoted to 0.15MPa, until water sampling surveys COD after stable water outlet.
COD is down to 70mg/L from 100mg/L, and COD removal rate reaches 30%.The embodiment, which passes through, controls reasonable ozone dosage,
Ensure that the COD of waste water is reduced.
In one embodiment, water outlet is matched by membrane module after coal chemical industry used water difficult to degradate enters membrane bioreactor
Negative-pressure ward is passed through in suction pump, and film water outlet is discharged into after film collector pipe summarizes and promotes pond.Film water outlet promotes waste water lifting in pond
To catalytic reactor.While catalytic reactor is intake, ozone is added in multiple ozone toss areas of reactor, hydrogen peroxide adds
In the water inlet end of reactor, water, ozone, hydrogen peroxide are sufficiently mixed, and ozone generates hydroxyl radical free radical under the action of hydrogen peroxide, are made
Macromolecular hardly degraded organic substance is degraded to small-molecule substance, CO in waste water2And water, water outlet can direct emissions.Ozone adds
150mg/L is measured, the reaction time may be configured as 5min, O3/H2O2Add mass ratio 2.83:1.While catalytic reactor reacts
Ozone liquid rotary compressor need to be started, the pressure at expulsion of ozone is promoted to 0.15MPa, until water sampling surveys COD after stable water outlet.
COD is down to 50mg/L from 100mg/L, and COD removal rate reaches 50%.The embodiment increases ozone dosage by control, really
It protects waste water COD and reaches 50mg/L, meet discharged wastewater met the national standard or be directly entered reuse water treatment system.
The application also proposes a kind of wastewater treatment method combined based on membrane bioreactor and ozone multi-point adding (also referred to as
Waste water treatment process), it includes above-mentioned sewage treatment equipments, and the method includes the steps of:
S1. water to be processed flows into membrane bioreactor；
S2. waste water is completed in membrane bioreactor based on membrane bioreactor waste water to separate with activated sludge；
S3. the water after separating is promoted to catalytic reactor, and the reactor is while water inlet, in the water inlet end of reactor
It adds hydrogen peroxide, add ozone at multiple ozone toss areas of reactor.Water, ozone, dioxygen in this way in catalytic reactor
Water is sufficiently mixed, and ozone generates hydroxyl radical free radical under the action of hydrogen peroxide, so that macromolecular hardly degraded organic substance aoxidizes in water
It is degraded to small-molecule substance, CO2And water.
S4. the water Jing Guo reactor for treatment is drained into discharge pond.In the embodiment, through Membrane Bioreactor for Wastewater Treatment
Water (being also referred to as discharged) saves depositing technology, and simple process, aqueous suspension and turbidity are low out, effectively improve the anti-of catalytic ozonation
Answer efficiency.In present embodiment, the membrane module that membrane bioreactor includes uses PVDF hollow-fibre membrane.Preferably, the film
Membrane flux uses 12L/ (m2.h).The pressure that adds when ozone adds is 0.09MPa.Due to waste water enter it is right after catalytic reactor
Ozone adds generation resistance, preferably needs to start ozone liquid rotary compressor, pressure at expulsion 0.15MPa.Ozone in the S3
(O3)/hydrogen peroxide (H2O2) add mass ratio 2.83:1, every removal 100mg/LCOD needs to consume the ozone of 250mg/L.
1~3m/s of water flow velocity in catalytic reactor pipeline.Residence time of the water in reactor between 1~10min, guarantees
It is adequately reacted.3 ozone toss areas are arranged in the reactor, and each dosage point ozone dosage is 20mg/L, maximum
Ozone dosage is 240mg/L.It is added compared to single-point and will cause water, ozone, hydrogen peroxide insufficient contact.Such as reactor into
The mouth of a river adds hydrogen peroxide, then single-point adds ozone, only reacts in reactor leading portion, and reactor back segment is lost substantially and is catalyzed again
Oxidability.The application implements to use 3 positions, and general to divide equally in pipeline in journey, purpose allows ozone and water to contact
More completely.
In one embodiment, it is flowed into after also first passing through biochemical treatment comprising coal chemical industry pending water difficult to degrade in the S1
Membrane bioreactor.Biochemical reaction can be according to the characteristic of waste water using which kind of biochemical process depending on the characteristic of waste water
It is selected, MBR membrane cisterna is entered after bio-chemical effluent.
It in one embodiment, can be matched by membrane module in the S3 in the case where membrane module operates normally not backwash
Suction pump is connected directly to catalytic reactor import.
It in one embodiment, also include that the water after separation is evacuated to film by the negative-pressure ward of suction pump and is discharged in the S3
Promote pond.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art
It cans understand the content of the present invention and implement it accordingly, it is not intended to limit the scope of the present invention.It is all to lead according to the present invention
The modification for wanting the Spirit Essence of technical solution to be done, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding, which is characterized in that include membrane biological reaction
Device, suction pump, catalytic reactor, discharge pond,
The membrane bioreactor has water outlet, is configured at membrane module top, one end of junctional membrane collector pipe, film catchments
The other end of pipe is connected to suction pump,
The catalytic reactor has water inlet, is connected to suction pump by pipeline, water outlet is connected to row by pipeline
Discharge water pond, and a plurality of ozone add port, and to the injection of ozone into the pipe of the catalytic reactor, hydrogen peroxide adds end
Mouthful, it is located near water inlet, to inject hydrogen peroxide into the pipe of the catalytic reactor, wherein pass through membrane biological reaction
Catalytic reactor is extracted through the suction pump and led to the water of device processing out, in catalytic reactor after catalytic ozonation is handled
Water by its outlet drain into discharge pond.
2. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as described in claim 1, which is characterized in that also
It is discharged comprising film and promotes pond, the water of the Membrane Bioreactor for Wastewater Treatment leads to film water outlet by suction pump and promotes pond；
Film be discharged elevator pump, have the first water inlet end, its by pipeline be connected to film water outlet promotion pond in, the first water outlet,
The water inlet of catalytic reactor is connected to by pipeline, the water film to be discharged in promotion pond is promoted to catalytic reactor.
3. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as claimed in claim 1 or 2, which is characterized in that
A plurality of ozone add the total ozone dosage in port between 0~240mg/L.
4. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as claimed in claim 1 or 2, which is characterized in that
The dosage of the ozone and hydrogen peroxide adds mass ratio between 2~3:1.
5. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as claimed in claim 4, which is characterized in that institute
The dosage for stating ozone and hydrogen peroxide adds mass ratio 2.83:1.
6. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as described in claim 1, which is characterized in that institute
Catalytic reactor is stated using duct type mixing reactor, includes that water inlet, water outlet, the first ozone add port, the second ozone
Add port, third ozone adds port, wherein, the first ozone adds port, the second ozone adds port, third ozone adds
Port passes through pipeline respectively and is connected to ozone generator, and water inlet is nearby configured with hydrogen peroxide and adds port, catalysis reaction
Water by water inlet flow to catalytic reactor when device is run, and adds port by hydrogen peroxide and injects hydrogen peroxide, first smelly into water
Oxygen adds port, the second ozone adds port, third ozone adds port injection of ozone in the water respectively into pipeline.
7. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as claimed in claim 6, which is characterized in that institute
State the first ozone add port and the second ozone add port between distance L1 and the second ozone adds port and third ozone is thrown
Add the distance L2 between port equal.
8. the wastewater treatment equipment based on MBR in conjunction with ozone multi-point adding as claimed in claim 6, which is characterized in that the
Three ozone add the ratio of port distance L3 and water inlet to distance L between water outlet between water inlet between 0.3~0.7.
9. a kind of wastewater treatment method based on MBR in conjunction with ozone multi-point adding, which is characterized in that comprising such as claim 1-
Wastewater treatment equipment described in any one of 8, the method comprise the steps of:
S1. water to be processed flows into membrane bioreactor；
S2. water is carried out in membrane bioreactor based on membrane bioreactor water to separate with activated sludge；
S3. the water after separating is promoted to catalytic reactor, and the catalytic reactor is passing through water inlet side while water inlet
Hydrogen peroxide add end hydrogen peroxide is added into pipe, ozone is added into pipe at a plurality of ozone toss areas；
S4. the water by catalytic reactor processing is drained into discharge pond.
10. method as claimed in claim 9, which is characterized in that in the S3, water water flow velocity in the pipeline of catalytic reactor
Between 1~3m/s, each ozone adds port ozone dosage between 20mg/L~80mg/L.
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Country or region after: China Address after: Floor 4, block a, Oriental fisherman's Wharf, 1088 Yangshupu Road, Yangpu District, Shanghai 200082 Applicant after: Mai Wang Environmental Technology Co.,Ltd. Address before: Floor 4, block a, Oriental fisherman's Wharf, 1088 Yangshupu Road, Yangpu District, Shanghai 200082 Applicant before: MCWONG ENVIRONMENTAL TECHNOLOGY Co.,Ltd. Country or region before: China |