CN202606043U - Membrane cleaning device suitable for immersed membrane bioreactor - Google Patents
Membrane cleaning device suitable for immersed membrane bioreactor Download PDFInfo
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- CN202606043U CN202606043U CN201220266292XU CN201220266292U CN202606043U CN 202606043 U CN202606043 U CN 202606043U CN 201220266292X U CN201220266292X U CN 201220266292XU CN 201220266292 U CN201220266292 U CN 201220266292U CN 202606043 U CN202606043 U CN 202606043U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The utility model provides a membrane cleaning device suitable for an immersed membrane bioreactor. A traditional punched aeration pipe is substituted by a micro nanometer bubble generator, high pressure water flow containing micrometer and nanometer bubbles is generated in the membrane bioreactor, and the high pressure water flow can supply oxide for reaction of microorganisms and has good flushing function on membrane assemblies. The membrane cleaning device comprises a micro nanometer bubble generator and an oxygen supply system. The micro nanometer bubble generator comprises a micro nanometer bubble generator main machine and aeration heads, wherein a dissolved gas device and a blower pump connected with the dissolved gas are arranged in the main machine. A gas inlet of the dissolved gas device is connected with the oxygen supply system, a water inlet is communicated with the membrane bioreactor, a water outlet is connected with a plurality of aeration heads arranged in the membrane bioreactor through connection pipelines, the plurality of aeration heads are evenly arranged at the lower end of the membrane assembly in the membrane bioreactor, and the direction of high pressure water flow out of the water outlets of the aeration heads are parallel to or tangent with a solid-liquid interface of a membrane of the membrane assembly.
Description
Technical field
The utility model relates to membrane bioreactor, particularly relates to a kind of film cleaning device that is applicable to the submerged membrane bioreactor.
Background technology
Membrane bioreactor (Membrane Bio-Reactor; MBR); Be the new kenel Waste Water Treatment that a kind of membrane separation technique and biologic treating technique organically combine, replace the second pond in the activated sludge process, carry out Separation of Solid and Liquid with membrane module; Have the incomparable advantage of traditional waste water treatment process, in field of waste water treatment, be used widely.According to the compound mode of membrane module and bioreactor, can membrane bioreactor be divided into separated type, two kinds of fundamental types of immersion.
Separate film biological reactor is arranged membrane module and bioreactor branch.Mixed liquor in the bioreactor is delivered to the filter end of membrane module after the circulating pump supercharging, under pressure, the liquid in the mixed liquor sees through film, becomes the water outlet after the system handles; Solid content, macromolecular substances etc. the then micropore of tunicle are held back, and are back in the bioreactor with concentrate.The characteristics of separate film biological reactor are stable and reliable operations, be easy to film cleaning, change and set up; And membrane flux is generally bigger.But general condition is down for reducing the deposition of pollutant on the film surface; Prolong the cleaning frequency of film; Need higher face cross-flow flow velocity be provided with circulating pump, normally used external milipore filter needs the high-power circulating pump of configuration; Not only the water circulation amount is big, power cost is high, and the shearing force that the rotation of the high speed of high-power circulating pump produces can make the certain micro-organisms thalline produce deactivation phenomenom.Simultaneously, separate film biological reactor is owing to have partially mixed liquid and can't have to be back in the biochemical system through tubular ultra-filtration membrane and go, the uncontrollable capacity of returns of this part phegma, so separate film biological reactor combines relatively poor with biochemical system.The submerged membrane bioreactor is to be immersed in membrane module in the mixed liquor of bioreactor; Water inlet gets into membrane bioreactor; Activated sludge in the mixed liquid of most of pollutant is wherein removed; The aqueous solution forms product water through the filtration of film, and big size particles thing, microorganism and part larger molecular organics then are trapped within the reactor.The submerged membrane bioreactor is owing to be immersed in the biochemical system fully, and this part mixed liquor that therefore need not reflux has saved the mixed liquor circulatory system, so combine better with biochemical system; And the submerged membrane bioreactor leans on pump suction water outlet, and energy consumption is much lower relatively; Occupation of land is more compact than separated type, has received special concern in water treatment field in recent years.But general membrane flux is relatively low, film takes place easily pollute, and is not easy after film pollutes to clean and change.
The operation of submerged membrane bioreactor is mainly through integrated boring aeration pipe on membrane module, and with the mode aeration of aeration tube, the agitaion through air drives water, microorganism and the Pollutants Diffusion around the membrane module, with the pollution of minimizing film.Because the aeration tolerance that membrane module needs is the tolerance that the physics to membrane module washes away; With the quantity of membrane module with to handle the water yield relevant, and the needed aeration rate of membrane bioreactor is relevant with the pollutant levels in the water inlet, so the mode through boring aeration pipe; Needed aeration tolerance of membrane module and the needed aeration rate of membrane bioreactor can't mate usually fully; Cause aeration tolerance excessive, energy consumption is bigger, and the scouring effect of the gas-liquid mixture fluid of gas drive simultaneously is also comparatively limited.
The utility model content
The purpose of the utility model provides a kind of film cleaning device that is applicable to the submerged membrane bioreactor; Adopt micro-nano bubble generator to replace traditional boring aeration pipe; In membrane bioreactor, produce the High-Pressure Water that is rich in micron and nano grade air bubbles, when supplying with the necessary oxygen of microbial reaction, membrane module is had good souring; And activated sludge is had good stirring action, reduce and significantly reduce energy consumption when film pollutes.
The purpose of the utility model realizes through following technical proposals:
A kind of film cleaning device that is applicable to the submerged membrane bioreactor; It is characterized in that; Comprise micro-nano bubble generator and the oxygen system of oxygen is provided for micro-nano bubble generator; Said micro-nano bubble generator comprises micro-nano bubble generator main frame and micro-nano bubble aeration head; Said micro-nano bubble generator main frame comprises can realize air-dissolving apparatus that gas-liquid is mixed in confined conditions and the booster pump that power is provided that is connected with air-dissolving apparatus; The air inlet of said air-dissolving apparatus connects said oxygen system, water inlet and submerged membrane bioreactor UNICOM, and delivery port is connected through connecting line on the water inlet of one or more micro-nano bubble aeration head of the membrane module lower end that is arranged in the submerged membrane bioreactor; The direction of the High-Pressure Water that is rich in micron and nano grade air bubbles that makes progress of the delivery port ejection of said micro-nano bubble aeration head is parallel or tangent with the solid liquid interface of the film of membrane module.
Said oxygen system comprises air oxygen system and/or pure oxygen oxygen system, and said air oxygen system comprises and the air ventilation channel of atmosphere that the air ventilation channel is provided with gas control valve; Said pure oxygen oxygen system comprises pure oxygen generator or oxygen cylinder, pure oxygen ventilation channel; Said pure oxygen generator or oxygen cylinder are connected with the pure oxygen ventilation channel through pressure-reducing valve; The pure oxygen ventilation channel is provided with control valve and check-valves; Said air ventilation channel is connected with the air inlet of air-dissolving apparatus through three-way connection with the pure oxygen ventilation channel, at the air inlet place of air-dissolving apparatus gas flowmeter is set.
The outlet pressure of a said micro-nano bubble aeration delivery port is 0.3-1.5MPa, and going out water flow velocity is 1-10m/s.
The booster pump of said micro-nano bubble generator main frame is dry pump or immersible pump.
Membrane module in the said membrane bioreactor is a curtain formula hollow fiber film assembly, and said micro-nano bubble aeration head evenly is arranged at the diaphragm of said curtain formula hollow fiber film assembly lower end and the interstitial site between the diaphragm.
Membrane module in the said membrane bioreactor is a plate type membrane assembly, and said micro-nano bubble aeration head evenly is arranged at the diaphragm of said plate type membrane assembly lower end and the interstitial site between the diaphragm.
Membrane module in the said membrane bioreactor is the pillar hollow fiber film assembly, and said micro-nano bubble aeration head evenly is arranged at vertical shaft core position of said pillar hollow fiber film assembly lower end.
The air-dissolving apparatus water inlet of said micro-nano bubble generator main frame is connected with the submerged membrane bioreactor through first inlet pipeline and/or second inlet pipeline; Said first inlet pipeline directly is communicated with in the mixed liquor of membrane bioreactor; Said second inlet pipeline is communicated with the water producing pipe road of membrane bioreactor, on first inlet pipeline and second inlet pipeline, liquid control valve is set respectively.
The technique effect of the utility model:
A kind of film cleaning device that is applicable to the submerged membrane bioreactor that the utility model provides; Adopt the aeration head and the connecting pipeline thereof of micro-nano bubble generator to replace traditional boring aeration pipe; Through air-dissolving apparatus and the booster pump that is provided with in the micro-nano bubble generator main frame; Mud mixed liquid in the membrane bioreactor is circulated; Dissolved air or pure oxygen in pressurization, and finally in membrane bioreactor, produce the High-Pressure Water that is rich in micron and nano grade air bubbles through micro-nano bubble aeration head, not only provide microbial reaction required dissolved oxygen; And the High-Pressure Water that produces of micro-nano bubble aeration delivery port can fully stir and wash the film surface of submerged membrane assembly, can accomplish oxygen supply and the aeration of membrane module is scrubbed through the water inlet process of membrane bioreactor hydraulic hoisting; The micro-nano bubble that forms also can produce than macro-energy in dissolving and rupture process; Membrane bioreactor is significantly reduced than the energy consumption of traditional form; The equipment simple installation; Easy to operate, it is big effectively to solve traditional boring aeration pipe aeration energy consumption, and membrane contaminant speed is fast problem such as lacks with the cleaning frequency.
Concrete, the advantage of said apparatus is: micron and nano level bubble that the micro-nano bubble generator of ⑴ is produced, and the mass-transfer efficiency of its oxygen significantly increases, and approximately be 4 times of dissolved oxygen rate of common perforation malleation aeration, so its required tolerance significantly reduces; ⑵ mixed liquor that is rich in micro-nano bubble and High-Pressure Water that micro-nano bubble aeration head produces have good souring to membrane module; Can effectively prevent the film pollution problems; The explosion in mixed liquor that reduces the micro-nano bubble of cost ⑶ of wash number and cleaning agent can produce instantaneous higher energy, and this acoustic cavitation effect can be played effect (4) oxygen system of rinsing membrane module can regulated at will, as when need not more a large amount of oxygen supplys and requiring; Can adopt the air oxygen system; Air feed cost even can ignore, and during more a large amount of if desired oxygen, can adopt the pure oxygen oxygen system; Because the mass-transfer efficiency of pure oxygen and the combination of micro-nano bubble generator; Make the oxygen aequum even near theoretical value, not only requisite oxygen tolerance is less, and the reaction efficiency of the membrane bioreactor under the pure oxygen condition has also significantly and promotes.
In sum, the device of the utility model is as being applicable to the film cleaning device of submerged membrane bioreactor, also the submerged membrane assembly had washing capacity preferably when having efficient oxygen delivery capacity; Can substitute the boring aeration pipe aeration pattern of high energy consumption fully, significantly reduce the aeration rate energy consumption of membrane bioreactor, and demonstrate higher flushing performance for membrane module; Comprise preventing membrane module sludge blockage on every side, reduce film surface pollution, micron and nano level bubble that it contains; In water, be in suspended state, the film surface is had cleaning action, can effectively reduce the pollution speed on film surface; This device can move continuously; It is high to have the equipment degree, easy and simple to handle, non-secondary pollution and advantage such as easy to maintenance.
Description of drawings
Fig. 1 is the structural representation of the film cleaning device embodiment that is applicable to the submerged membrane bioreactor of the utility model.
Fig. 2 is the structural representation of another embodiment of film cleaning device that is applicable to the submerged membrane bioreactor of the utility model.
Reference numeral is listed as follows: the micro-nano bubble generator main frame of 1-, the micro-nano bubble aeration head of 2-, 3-first inlet pipeline, 4-gas flowmeter, 5-three-way connection; The 6-control valve, 7-check-valves, 8-pressure-reducing valve, 9-pure oxygen generator or oxygen cylinder, 10-gas control valve; 11-air ventilation channel, 12-membrane bioreactor, 13-membrane module, 14-booster pump; 15-pure oxygen ventilation channel, 16-second inlet pipeline, 17-water producing pipe road, 18-first liquid control valve; 19-second liquid control valve, 20-aeration head connecting line, 21-aeration head water inlet, 22-aeration head delivery port.
The specific embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed description.
As shown in Figure 1, be the structural representation of the film cleaning device embodiment that is applicable to the submerged membrane bioreactor of the utility model.
A kind of film cleaning device that is applicable to the submerged membrane bioreactor; Comprise micro-nano bubble generator and the oxygen system of oxygen is provided for micro-nano bubble generator; Micro-nano bubble generator comprises micro-nano bubble generator main frame and micro-nano bubble aeration 2; Wherein, Setting can realize air-dissolving apparatus 1 that gas-liquid is mixed in confined conditions and the booster pump 14 that is connected with air-dissolving apparatus in the micro-nano bubble generator main frame, and the air inlet of air-dissolving apparatus 1 connects oxygen system, and the oxygen system of present embodiment comprises air oxygen system and/or pure oxygen oxygen system; The air oxygen system comprises and the air ventilation channel 11 of atmosphere that air ventilation channel 11 is provided with gas control valve 10; The pure oxygen oxygen system comprises pure oxygen generator or oxygen cylinder 9, pure oxygen ventilation channel 15; Pure oxygen generator or oxygen cylinder 9 are connected with pure oxygen ventilation channel 15 through pressure-reducing valve 8; Pure oxygen ventilation channel 15 is provided with control valve 6 and check-valves 7; Air ventilation channel 11 is connected through the air inlet of three-way connection 5 with air-dissolving apparatus 1 with pure oxygen ventilation channel 15, at the air inlet place of air-dissolving apparatus 1 gas flowmeter 4 is set; The air oxygen system is that air is got into air ventilation channel 11 through the negative pressure suction that micro-nano bubble generator main frame forms; Regulate the entering flow of air then through gas control valve 10; Through the gas that gas flowmeter 4 is metered into, enter at last micro-nano bubble generator main frame 1 and with the circulation mixed liquor mix; The pure oxygen oxygen system is the oxygen that the purity oxygen generating means that has certain initial pressure or oxygen cylinder 9 produced, successively through pressure-reducing valve 8, check-valves 7, control method 6 and gas flowmeter 4 regulate certain flow oxygen the micro-nano bubble generator main frame 1 of entering and mix with the mixed liquor of circulation.In implementation process, can pass through three-way connection 5, make this device have air oxygen system and pure oxygen oxygen system simultaneously, also can optionally use air oxygen system or pure oxygen oxygen system according to the aerobic situation of membrane bioreactor; The water inlet of air-dissolving apparatus is through the mixed liquor UNICOM in first inlet pipeline 3 and the submerged membrane bioreactor 12, and the delivery port of air-dissolving apparatus is connected on the water inlet 21 of several micro-nano bubble aerations of being arranged in the submerged membrane bioreactor 12 2 through aeration head connecting line 20; Several micro-nano bubble aeration heads are arranged at membrane module 13 lower ends in the submerged membrane bioreactor; Delivery port 22 directions of micro-nano bubble aeration 2 are parallel with the orientation of membrane module 13; The quantity of aeration head is confirmed according to the required erosion quantity of membrane module; Aeration head delivery port 22 produces High-Pressure Water upwards, and outlet pressure is at 0.3-1.5MPa, and flow velocity is at 1-10m/s; The direction of the High-Pressure Water that is rich in micron and nano grade air bubbles that aeration head delivery port 22 flows out is parallel or tangent with the solid liquid interface of the film of membrane module; The current with being rich in micro-nano bubble that have pressure through delivery port can make aeration head drive the mud mixed liquid stirring to greatest extent; The formation of film surface is washed away, weaken the concentration polarization on film surface.The booster pump that is comprised in the micro-nano bubble generator main frame can adopt dry pump, also can adopt the immersible pump form, for micro-nano bubble generator provides enough pressure.Membrane module in the membrane bioreactor shown in Figure 1 is a curtain formula hollow fiber film assembly, and micro-nano bubble aeration head evenly is arranged at the diaphragm of curtain formula hollow fiber film assembly lower end and the interstitial site between the diaphragm; Membrane module in the membrane bioreactor can also be plate type membrane assembly, and similarly, micro-nano bubble aeration head evenly is arranged at the diaphragm of plate type membrane assembly and the interstitial site between the diaphragm.
As shown in Figure 2, be the structural representation of another embodiment of film cleaning device that is applicable to the submerged membrane bioreactor of the utility model.Membrane modules 13 in the membrane bioreactor 12 of present embodiment are the pillar hollow fiber film assembly, and micro-nano bubble aeration 2 evenly is arranged at vertical shaft core position of pillar hollow fiber film assembly lower end; In addition; Air-dissolving apparatus 1 water inlet of micro-nano bubble generator main frame is connected with membrane bioreactor 12 through first inlet pipeline 3 and/or second inlet pipeline 16; First inlet pipeline 3 directly is communicated with in the mixed liquor of membrane bioreactor, is medium with the mixed liquor, and second inlet pipeline 16 is communicated with the water producing pipe road 17 of membrane bioreactor; With the clear water is medium, and first liquid control valve 18 and second liquid control valve 19 are set respectively on first inlet pipeline and second inlet pipeline.
Should be pointed out that the above specific embodiment can make those skilled in the art more fully understand the utility model and create, create but limit the utility model never in any form.Therefore,, this specification and embodiment carried out detailed explanation although creating the utility model,, it will be appreciated by those skilled in the art that still to create and make amendment or be equal to replacement the utility model; And all do not break away from the spirit of the utility model creation and the technical scheme and the improvement thereof of scope, and it all is encompassed in the utility model and creates in the middle of the protection domain of patent.
Claims (8)
1. film cleaning device that is applicable to the submerged membrane bioreactor; It is characterized in that; Comprise micro-nano bubble generator and the oxygen system of oxygen is provided for micro-nano bubble generator; Said micro-nano bubble generator comprises micro-nano bubble generator main frame and micro-nano bubble aeration head; Said micro-nano bubble generator main frame comprises can realize air-dissolving apparatus that gas-liquid is mixed in confined conditions and the booster pump that power is provided that is connected with air-dissolving apparatus; The air inlet of said air-dissolving apparatus connects said oxygen system, water inlet and submerged membrane bioreactor UNICOM, and delivery port is connected through connecting line on the water inlet of one or more micro-nano bubble aeration head of the membrane module lower end that is arranged in the submerged membrane bioreactor; The direction of the High-Pressure Water that is rich in micron and nano grade air bubbles that makes progress of the delivery port ejection of said micro-nano bubble aeration head is parallel or tangent with the solid liquid interface of the film of membrane module.
2. the film cleaning device that is applicable to the submerged membrane bioreactor according to claim 1; It is characterized in that; Said oxygen system comprises air oxygen system and/or pure oxygen oxygen system; Said air oxygen system comprises and the air ventilation channel of atmosphere that the air ventilation channel is provided with gas control valve; Said pure oxygen oxygen system comprises pure oxygen generator or oxygen cylinder, pure oxygen ventilation channel; Said pure oxygen generator or oxygen cylinder are connected with the pure oxygen ventilation channel through pressure-reducing valve; The pure oxygen ventilation channel is provided with control valve and check-valves; Said air ventilation channel is connected with the air inlet of air-dissolving apparatus through three-way connection with the pure oxygen ventilation channel, at the air inlet place of air-dissolving apparatus gas flowmeter is set.
3. the film cleaning device that is applicable to the submerged membrane bioreactor according to claim 2 is characterized in that the outlet pressure of a said micro-nano bubble aeration delivery port is 0.3-1.5MPa, and going out water flow velocity is 1-10m/s.
4. the film cleaning device that is applicable to the submerged membrane bioreactor according to claim 3 is characterized in that the booster pump of said micro-nano bubble generator main frame is dry pump or immersible pump.
5. the film cleaning device that is applicable to the submerged membrane bioreactor according to claim 4; It is characterized in that; Membrane module in the said membrane bioreactor is a curtain formula hollow fiber film assembly, and said micro-nano bubble aeration head evenly is arranged at the diaphragm of said plate type membrane assembly lower end and the interstitial site between the diaphragm.
6. the film cleaning device that is applicable to the submerged membrane bioreactor according to claim 4; It is characterized in that; Membrane module in the said membrane bioreactor is a plate type membrane assembly, and said micro-nano bubble aeration head evenly is arranged at the diaphragm of said plate type membrane assembly lower end and the interstitial site between the diaphragm.
7. the film cleaning device that is applicable to the submerged membrane bioreactor according to claim 4; It is characterized in that; Membrane module in the said membrane bioreactor is the pillar hollow fiber film assembly, and said micro-nano bubble aeration head evenly is arranged at vertical shaft core position of said pillar hollow fiber film assembly lower end.
8. according to the described film cleaning device that is applicable to the submerged membrane bioreactor of one of claim 5 to 7; It is characterized in that; The air-dissolving apparatus water inlet of said micro-nano bubble generator main frame is connected with membrane bioreactor through first inlet pipeline and/or second inlet pipeline; Said first inlet pipeline directly is communicated with in the mixed liquor of membrane bioreactor; Said second inlet pipeline is communicated with the water producing pipe road of membrane bioreactor, on first inlet pipeline and second inlet pipeline, liquid control valve is set respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201220266292XU CN202606043U (en) | 2012-06-06 | 2012-06-06 | Membrane cleaning device suitable for immersed membrane bioreactor |
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| CN201220266292XU CN202606043U (en) | 2012-06-06 | 2012-06-06 | Membrane cleaning device suitable for immersed membrane bioreactor |
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| CN201220266292XU Withdrawn - After Issue CN202606043U (en) | 2012-06-06 | 2012-06-06 | Membrane cleaning device suitable for immersed membrane bioreactor |
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Cited By (8)
| 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 |
| CN104138862A (en) * | 2014-06-26 | 2014-11-12 | 江西金达莱环保股份有限公司 | Cleaning gun and membrane washing method |
| CN104741003A (en) * | 2013-12-31 | 2015-07-01 | 三星Sdi株式会社 | Aerator Device And Filter System Including The Same |
| PL424148A1 (en) * | 2017-12-31 | 2019-07-01 | Net Spółka Z Ograniczona Odpowiedzialnością Water Technologies Spółka Komandytowa | System of water treatment and the method for cleaning filtering membranes |
| CN109954406A (en) * | 2019-05-13 | 2019-07-02 | 成都工业学院 | A kind of reverse osmosis membrane cleaning process |
| CN111408274A (en) * | 2020-03-30 | 2020-07-14 | 苏州热工研究院有限公司 | Inorganic ceramic membrane component |
| CN115121121A (en) * | 2022-04-27 | 2022-09-30 | 浙江长兴求是膜技术有限公司 | Membrane assembly, aeration device and cleaning method thereof and sewage treatment system |
| CN115417498A (en) * | 2022-09-22 | 2022-12-02 | 广东汇祥环境科技有限公司 | Efficient and green device and method for online maintainable cleaning of MBR (membrane bioreactor) membrane by micro-nano bubbles |
-
2012
- 2012-06-06 CN CN201220266292XU patent/CN202606043U/en not_active Withdrawn - After Issue
Cited By (11)
| 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 |
| CN102698607B (en) * | 2012-06-06 | 2014-08-20 | 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 |
| CN104741003A (en) * | 2013-12-31 | 2015-07-01 | 三星Sdi株式会社 | Aerator Device And Filter System Including The Same |
| US11524264B2 (en) | 2013-12-31 | 2022-12-13 | Lotte Chemical Corporation | Aerator device and filter system including the same |
| CN104138862A (en) * | 2014-06-26 | 2014-11-12 | 江西金达莱环保股份有限公司 | Cleaning gun and membrane washing method |
| PL424148A1 (en) * | 2017-12-31 | 2019-07-01 | Net Spółka Z Ograniczona Odpowiedzialnością Water Technologies Spółka Komandytowa | System of water treatment and the method for cleaning filtering membranes |
| CN109954406A (en) * | 2019-05-13 | 2019-07-02 | 成都工业学院 | A kind of reverse osmosis membrane cleaning process |
| CN111408274A (en) * | 2020-03-30 | 2020-07-14 | 苏州热工研究院有限公司 | Inorganic ceramic membrane component |
| CN115121121A (en) * | 2022-04-27 | 2022-09-30 | 浙江长兴求是膜技术有限公司 | Membrane assembly, aeration device and cleaning method thereof and sewage treatment system |
| CN115121121B (en) * | 2022-04-27 | 2023-10-31 | 浙江长兴求是膜技术有限公司 | Membrane module, aeration device and cleaning method thereof and sewage treatment system |
| CN115417498A (en) * | 2022-09-22 | 2022-12-02 | 广东汇祥环境科技有限公司 | Efficient and green device and method for online maintainable cleaning of MBR (membrane bioreactor) membrane by micro-nano bubbles |
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Granted publication date: 20121219 Effective date of abandoning: 20140820 |
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| RGAV | Abandon patent right to avoid regrant |