CN107082493A - And oxygen MBR integrated sewage treating apparatus - Google Patents
And oxygen MBR integrated sewage treating apparatus Download PDFInfo
- Publication number
- CN107082493A CN107082493A CN201710544975.4A CN201710544975A CN107082493A CN 107082493 A CN107082493 A CN 107082493A CN 201710544975 A CN201710544975 A CN 201710544975A CN 107082493 A CN107082493 A CN 107082493A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- mbr
- treating apparatus
- integrated sewage
- sewage treating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C02F3/30—Aerobic and anaerobic 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
- C02F3/34—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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
-
- 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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The invention provides a kind of and oxygen MBR integrated sewage treating apparatus, including anaerobic pond, oxygen compatibility pool, the MBR reaction tanks being sequentially communicated；Biologic packing material provided with water inlet pipe, the sparge pipe connected with water inlet pipe, and interior extension in the anaerobic pond；Spherical suspending carrier is filled with the oxygen compatibility pool；The spherical suspending carrier inside growth has anaerobic bacteria or and oxygen bacterium；The spherical suspending carrier external growth has good bacteria；MBR membrane modules built in MBR reaction tanks.This and oxygen MBR integrated sewage treating apparatus combine physical method, chemical method, biological method in the concrete practice of pollution control of water, fully take into account the specific environment of water body.Compared with prior art, simultaneous oxygen MBR integrated sewage treating apparatus only has anaerobic pond, oxygen compatibility pool, mbr ponds, without Aerobic Pond, and technological process is simple, cost of investment reduction.
Description
Technical field
The present invention relates to the technical field of water pollution control, set in particular to simultaneous oxygen MBR integrated sewage disposals
It is standby.
Background technology
With rapid economic development, river is gushed, lake, river stream pollution gradually aggravate.The waste water of plant emissions, neighbouring resident
Sanitary sewage swallow the beauty that river is gushed.River is gushed, lake, Jiang Liushui streams as the topmost part of Drinking Water, seriously
The phenomenon of polluted drinking water, exacerbates China's water resources crisis.
China is a water shortage country, and sewage disposal and reuse are the effective measures for developing water resource.Reusing sewage
It is after handling municipal sewage, trade effluent by equipment such as membrane bioreactors, to use it for afforesting, rinse, supplement sight
Reward water body etc. is non-to drink purpose, and clean water is used for the purposes of drinking contour water quality requirement.Municipal sewage, trade effluent are nearby
It can obtain, long distance water transfer can be removed from, and realize that making full use of for water resource is realized in processing nearby, while sewage passes through just nearby
Reason, causes effluent seepage prevented also from sewage during long distance delivery, causes polluted underground water source.Reusing sewage exists
Many water shortages is regional widely used in the world, is considered as 21 century sewage disposal most practical technique.
(Membrane Bio-Reactor, MBR) is membrane separation technique and the novel state of biologic treating technique combination
Waste Water Treatment.With membrane module substitution traditional biological treatment technology end second pond, high activity is kept in bioreactor
Sludge concentration, improves biological treatment organic loading, so that sewage treatment facility floor space is reduced, and by keeping low sludge to bear
Lotus reduces surplus sludge volume.It is main using the activated sludge being immersed in the membrane separation plant entrapping tank in aerobe pond and big
Molecular organic.Activated sludge (MLSS) concentration can be promoted to 8000~10,000mg/L in membrane bioreactor system, even
It is higher；Sludge age (SRT) can extend to more than 30 days.
Membrane bioreactor can retain generation cycle longer microorganism, can be achieved to dirt because of its effective crown_interception
Advanced water treatment, Simultaneous Nitrification bacterium can fully breed in system, and substantially, deep phosphorous removal denitrogenation is provided can for its nitrification effect
Energy.
At present, MBR films integrated sewage treating apparatus is used to handling wastewater application wider, effect preferably, but in the market with
And its Patents are all anaerobic- anoxic- oxic-MBR membrane reactors, or other MBR group technologies.Using MBR group technologies
Processing is all up marking water.
But objective shortcoming below the presence of prior art：
1st, not only equipment is more, energy consumption is higher, control is complicated for MBR integration apparatus in the market；
2nd, equipment volume is larger, it is wider to take up an area；
3rd, the noise effect surrounding resident that the blast aeration that aerobic MBR membrane process is used is produced.
The content of the invention
In view of this, the technical problem to be solved in the present invention is to overcome the defect of prior art there is provided a kind of and oxygen
MBR integrated sewage treating apparatus, including anaerobic pond, oxygen compatibility pool, the MBR reaction tanks being sequentially communicated；
Biologic packing material provided with water inlet pipe, the sparge pipe connected with water inlet pipe, and interior extension in the anaerobic pond；
Spherical suspending carrier is filled with the oxygen compatibility pool；
The spherical suspending carrier inside growth has anaerobic bacteria or and oxygen bacterium；
The spherical suspending carrier external growth has good bacteria；
MBR membrane modules built in MBR reaction tanks.
In some embodiments, the oxygen compatibility pool is separated with the MBR reaction tanks by the dividing plate for being laid with water hole, simultaneous
Oxygen pond sewage mutually circulates with MBR reaction tanks sewage；
The aperture of the water hole is not more than the diameter of spherical suspending carrier.
In some embodiments, distributing channel is provided between the anaerobic pond and the oxygen compatibility pool；The two of the distributing channel
End was respectively equipped with water pipe；One of them it is described cross water pipe connected with the anaerobic pond, another it is described mistake water pipe with it is described simultaneous
Oxygen pond is connected.
In some embodiments, the MBR reaction tanks are provided with suction pump, anti-by suction pumped MBR after sewage purification
Ying Chi.
In some embodiments, in addition to system occurs for external microbubble；The water inlet of system occurs for the microbubble
Pipe connects MBR reaction tanks；The outlet pipe that system occurs for the microbubble is connected with microbubble shower nozzle.
In some embodiments, the microbubble shower nozzle stretches into the oxygen compatibility pool and the MBR reaction tanks.
In some embodiments, the microbubble shower nozzle is horizontally disposed or shower nozzle is upwardly disposed.
In some embodiments, the microbubble shower nozzle is provided with controlled valve.
In some embodiments, in addition to clear water reserviors and/or sterilization pool；By the suction pumped row after sewage purification
Enter the clear water reserviors.
In some embodiments, in addition to sterilization pool；The sterilization is discharged into by the suction pumped after sewage purification
Pond.
The simultaneous oxygen MBR integrated sewage treating apparatus that the present invention is provided has the advantage that compared to prior art：
This and oxygen MBR integrated sewage treating apparatus combine physical method in the concrete practice of pollution control of water, changed
Method, biological method, fully take into account the specific environment of water body.
Compared with prior art, simultaneous oxygen MBR integrated sewage treating apparatus only has anaerobic pond, oxygen compatibility pool, mbr ponds, does not have
Aerobic Pond, technological process is simple, cost of investment reduction.
Anaerobic pond is by water distributor water distribution uniformity, built-in biological filler, sludge not free settling, and anaerobe strain is with biology
Filler is carrier, increases volumetric loading so that disposed of in its entirety load is improved.
The a number of spherical suspending carrier of filling, improves the biomass and biological species in oxygen compatibility pool in oxygen compatibility pool,
So as to improve the treatment effeciency of oxygen compatibility pool.Due in oxygen compatibility pool floating stuffing density close to water, so aeration when, with
Water is in the state that is thoroughly mixed, and the environment of microorganism growth is gas, liquid, solid three-phase.Collision of the spherical suspending carrier in water and cut
The effect of cutting, makes air bubble more tiny, adds the utilization rate of oxygen.In addition, being respectively provided with inside and outside each spherical suspending carrier
Different biological species, some anaerobic bacterias of growth inside or simultaneous oxygen bacterium, outside preferably bacteria, so each spherical suspending carrier
For a microreactor, nitration reaction and anti-nitration reaction is set to exist simultaneously, so as to improve treatment effect.
Further, oxygen compatibility pool is separated with mbr reaction tanks by the dividing plate for being covered with water hole so that two pond sewage can be mutual
Circulation, and spherical suspending carrier will not enter MBR membrane modules and damage membrane module, while traditional sludge reflux is eliminated,
Reduce operating cost.
Further, oxygen compatibility pool and the aeration in MBR ponds occur system using microbubble and exposed with specific microbubble shower nozzle jet
Gas, the micro-bubble of generation makes the floating stuffing in oxygen compatibility pool be in fluidized state, and the micro-bubble of generation accelerates MBR membrane modules
Disturbance, purge MBR membrane modules sludge.Occur system to replace traditional blast aeration with microbubble, that is, reduce operation
Cost, reduces noise pollution again.
Further, simultaneous oxygen MBR integrated sewage treating apparatus can be used for various industrial sewage and sanitary sewage, and oxygen
MBR integrated sewage treating apparatus has anaerobic pond, oxygen compatibility pool, MBR film reactions pond, and follow-up increase sterilization pool then can be used for hospital
The processing of waste water.
In summary, this and oxygen MBR integrated sewage treating apparatus will administer validity, long-term effect, the economy of sewage
Organically combine with eco-compatibility：Resource continuous utilization is not only realized, service life is long, safeguard simple；Avoid weight
Multiple pollution, repeats to administer, long term benefit is once invested in realization.And not by shadow situations such as waters shape, the depth, underwater
Ring, quantities is small, reduced investment.
Brief description of the drawings
It should be appreciated that the following drawings illustrate only certain embodiments of the present invention, therefore it is not construed as to model
The restriction enclosed, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these
Accompanying drawing obtains other related accompanying drawings.
Fig. 1 is the floor map of simultaneous oxygen MBR integrated sewage treating apparatus；
Fig. 2 is the diagrammatic cross-section of simultaneous oxygen MBR integrated sewage treating apparatus.
| Title | Label |
| Anaerobic pond | 1 |
| Oxygen compatibility pool | 2 |
| MBR reaction tanks | 3 |
| Water inlet pipe | 4 |
| Sparge pipe | 5 |
| The biologic packing material of interior extension | 6 |
| Cross water pipe | 7 |
| Distributing channel | 8 |
| Spherical suspending carrier | 9 |
| Dividing plate | 10 |
| MBR membrane modules | 11 |
| Suction pump | 12 |
| System occurs for microbubble | 13 |
| Microbubble shower nozzle | 14 |
Embodiment
Hereinafter, the various embodiments of the disclosure will be described more fully with reference to accompanying drawing.The disclosure can have various realities
Example is applied, and can adjust and change wherein.Therefore, will in more detail it be retouched with reference to the specific embodiment being shown in the drawings
State the disclosure.It should be understood, however, that：In the absence of the meaning that the various embodiments of the disclosure are limited to specific embodiment disclosed herein
Figure, but the disclosure should be interpreted as covering all adjustment in the spirit and scope for the various embodiments for falling into the disclosure, etc.
Jljl and/or alternative.Description taken together with the accompanying drawings, the same element of same reference numerals.
Hereinafter, the term " comprising " that can be used in the various embodiments of the disclosure or " may include " indicate disclosed
Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as existing
Used in the various embodiments of the disclosure, term " comprising ", " having " and its cognate are meant only to represent special characteristic, number
Word, step, operation, element, the combination of component or foregoing item, and be understood not to exclude first one or more other
Feature, numeral, step, operation, element, the presence of the combination of component or foregoing item or increase one or more features, numeral,
Step, operation, element, the possibility of the combination of component or foregoing item.
In the various embodiments of the disclosure, statement "or" or " in A or/and B at least one " include what is listed file names with
Any combinations of word or all combinations." A or B " or " in A or/and B at least one " may include A, may include for example, statement
B may include A and B both.
The statement (" first ", " second " etc.) used in the various embodiments of the disclosure can be modified to be implemented various
Various element in example, but corresponding element can not be limited.For example, presented above be not intended to limit the suitable of the element
Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills
Put and indicate different user device with second user device, although the two is all user's set.For example, not departing from each of the disclosure
In the case of the scope for planting embodiment, the first element is referred to alternatively as the second element, similarly, and the second element is also referred to as first
Element.
It should be noted that：, can be by the first composition member if an element ' attach ' to another element by description
Part is directly connected to the second element, and " connection " the 3rd can be constituted between the first element and the second element
Element.On the contrary, when an element " being directly connected to " is arrived into another element, it will be appreciated that be in the first element
And second the 3rd element is not present between element.
The term used in the various embodiments of the disclosure is only used for describing the purpose of specific embodiment and not anticipated
In the various embodiments of the limitation disclosure.As used herein, singulative is intended to also include plural form, unless context is clear
Chu it is indicated otherwise.Unless otherwise defined, all terms (including the technical term and scientific terminology) tool being otherwise used herein
There is the implication identical implication that the various embodiment one skilled in the art with the disclosure are generally understood that.The term
(term such as limited in the dictionary typically used) is to be interpreted as having and the situational meaning in correlative technology field
Identical implication and it will be not construed as with Utopian implication or excessively formal implication, unless in the various of the disclosure
It is clearly defined in embodiment.
Embodiment
Refering to Fig. 1 to Fig. 2, in embodiments of the present invention there is provided a kind of and oxygen MBR integrated sewage treating apparatus, including
Anaerobic pond 1, oxygen compatibility pool 2, the MBR reaction tanks 3 being sequentially communicated；
Biologic packing material 6 provided with water inlet pipe 4, the sparge pipe 5 connected with water inlet pipe 4, and interior extension in the anaerobic pond 1；
Spherical suspending carrier 9 is filled with the oxygen compatibility pool 2；
The growth inside of spherical suspending carrier 9 has anaerobic bacteria or and oxygen bacterium；
The external growth of spherical suspending carrier 9 has good bacteria；
MBR membrane modules 11 built in MBR reaction tanks 3.
In embodiments of the present invention, the oxygen compatibility pool 2 and the MBR reaction tanks 3 by be laid with the dividing plate 10 of water hole every
Open, the sewage of oxygen compatibility pool 2 mutually circulates with the sewage of MBR reaction tanks 3；
The aperture of the water hole is not more than the diameter of spherical suspending carrier 9.
Above-mentioned, this and oxygen MBR integrated sewage treating apparatus combine physics side in the concrete practice of pollution control of water
Method, chemical method, biological method, fully take into account the specific environment of water body.
Compared with prior art, simultaneous oxygen MBR integrated sewage treating apparatus only has anaerobic pond 1, oxygen compatibility pool 2, mbr ponds, does not have
There is Aerobic Pond, technological process is simple, cost of investment reduction.
Anaerobic pond 1 is by water distributor water distribution uniformity, built-in biological filler, sludge not free settling, and anaerobe strain is with life
Thing filler is carrier, increases volumetric loading so that disposed of in its entirety load is improved.
The a number of spherical suspending carrier 9 of filling, improves the biomass and biological species in oxygen compatibility pool 2 in oxygen compatibility pool 2
Class, so as to improve the treatment effeciency of oxygen compatibility pool 2.Due in oxygen compatibility pool 2 floating stuffing density close to water, so aeration when
Wait, with water in the state that is thoroughly mixed, the environment of microorganism growth is gas, liquid, solid three-phase.The touching in water of spherical suspending carrier 9
Hit and shear action, make air bubble more tiny, add the utilization rate of oxygen.In addition, inside and outside each spherical suspending carrier 9
It is respectively provided with different biological species, some anaerobic bacterias of growth inside or simultaneous oxygen bacterium, outside preferably bacteria, so each spherical suspending
Carrier 9 is all a microreactor, nitration reaction and anti-nitration reaction is existed simultaneously, so as to improve treatment effect.
In embodiments of the present invention, distributing channel 8 is provided between the anaerobic pond 1 and the oxygen compatibility pool 2；The distributing channel 8
Two ends be respectively equipped with water pipe 7；One of them described water pipe 7 excessively is connected with the anaerobic pond 1, another described water pipe 7 excessively
Connected with the oxygen compatibility pool 2.
In embodiments of the present invention, the MBR reaction tanks 3 are provided with suction pump 12, are extracted out after sewage purification by suction pump 12
MBR reaction tanks 3.
In embodiments of the present invention, in addition to system 13 occurs for external microbubble；System 13 occurs for the microbubble
The connection MBR of water inlet pipe 4 reaction tanks 3；The outlet pipe that system 13 occurs for the microbubble is connected with microbubble shower nozzle 14.
In embodiments of the present invention, the microbubble shower nozzle 14 stretches into the oxygen compatibility pool 2 and the MBR reaction tanks 3.
In embodiments of the present invention, the microbubble shower nozzle 14 is horizontally disposed or shower nozzle is upwardly disposed.
In embodiments of the present invention, the microbubble shower nozzle 14 is provided with controlled valve.
In embodiments of the present invention, in addition to clear water reserviors and/or sterilization pool；Extracted out after sewage purification by the suction pump 12
It is discharged into the clear water reserviors.
In embodiments of the present invention, in addition to sterilization pool；Extracted out after sewage purification by the suction pump 12 and be discharged into described disappear
Malicious pond.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (10)
1. simultaneous oxygen MBR integrated sewage treating apparatus, it is characterised in that：Anaerobic pond, oxygen compatibility pool, MBR including being sequentially communicated are anti-
Ying Chi；
Biologic packing material provided with water inlet pipe, the sparge pipe connected with water inlet pipe, and interior extension in the anaerobic pond；
Spherical suspending carrier is filled with the oxygen compatibility pool；
The spherical suspending carrier inside growth has anaerobic bacteria or and oxygen bacterium；
The spherical suspending carrier external growth has good bacteria；
MBR membrane modules built in MBR reaction tanks.
2. as claimed in claim 1 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：The oxygen compatibility pool with it is described
MBR reaction tanks are separated by the dividing plate for being laid with water hole, and oxygen compatibility pool sewage mutually circulates with MBR reaction tanks sewage；
The aperture of the water hole is not more than the diameter of spherical suspending carrier.
3. as claimed in claim 1 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：The anaerobic pond with it is described
Distributing channel is provided between oxygen compatibility pool；The two ends of the distributing channel were respectively equipped with water pipe；One of them it is described cross water pipe with it is described
Anaerobic pond is connected, and another described water pipe of crossing is connected with the oxygen compatibility pool.
4. as claimed in claim 1 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：The MBR reaction tanks are provided with
Suction pump, by suction pumped MBR reaction tanks after sewage purification.
5. as claimed in claim 1 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：Also include external micro- gas
Be soaked raw system；The water inlet pipe connection MBR reaction tanks of system occur for the microbubble；The outlet pipe of system occurs for the microbubble
It is connected with microbubble shower nozzle.
6. as claimed in claim 5 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：The microbubble shower nozzle is stretched
Enter the oxygen compatibility pool and the MBR reaction tanks.
7. as claimed in claim 6 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：The microbubble shower nozzle water
Plain cloth is put or shower nozzle is upwardly disposed.
8. as claimed in claim 7 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：The microbubble shower nozzle is set
There is controlled valve.
9. as claimed in claim 4 and oxygen MBR integrated sewage treating apparatus, it is characterised in that：Also include clear water reserviors and/or
Sterilization pool；The clear water reserviors are discharged into by the suction pumped after sewage purification.
10. the simultaneous oxygen MBR integrated sewage treating apparatus described in claim 4, it is characterised in that：Also include sterilization pool；Sewage
The sterilization pool is discharged into by the suction pumped after purification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544975.4A CN107082493A (en) | 2017-07-05 | 2017-07-05 | And oxygen MBR integrated sewage treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710544975.4A CN107082493A (en) | 2017-07-05 | 2017-07-05 | And oxygen MBR integrated sewage treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107082493A true CN107082493A (en) | 2017-08-22 |
Family
ID=59607000
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710544975.4A Pending CN107082493A (en) | 2017-07-05 | 2017-07-05 | And oxygen MBR integrated sewage treating apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019079947A1 (en) * | 2017-10-23 | 2019-05-02 | 盐城衍易科技有限公司 | Integrated sewage treatment device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698607A (en) * | 2012-06-06 | 2012-10-03 | 北京中农天陆微纳米气泡水科技有限公司 | Membrane cleaning device applicable to submerged membrane bioreactor |
| CN103708686A (en) * | 2014-01-21 | 2014-04-09 | 厦门市威士邦膜科技有限公司 | Facultative anaerobic membrane bioreactor wastewater treatment device and treatment process thereof |
| CN207108602U (en) * | 2017-07-05 | 2018-03-16 | 中山市中开环保设备制造有限公司 | And oxygen MBR integrated sewage treating apparatus |
-
2017
- 2017-07-05 CN CN201710544975.4A patent/CN107082493A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102698607A (en) * | 2012-06-06 | 2012-10-03 | 北京中农天陆微纳米气泡水科技有限公司 | Membrane cleaning device applicable to submerged membrane bioreactor |
| CN103708686A (en) * | 2014-01-21 | 2014-04-09 | 厦门市威士邦膜科技有限公司 | Facultative anaerobic membrane bioreactor wastewater treatment device and treatment process thereof |
| CN207108602U (en) * | 2017-07-05 | 2018-03-16 | 中山市中开环保设备制造有限公司 | And oxygen MBR integrated sewage treating apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019079947A1 (en) * | 2017-10-23 | 2019-05-02 | 盐城衍易科技有限公司 | Integrated sewage treatment device |
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