CN107174960A - A kind of method that utilization nano bubble is aerated decelerating membrane pollution - Google Patents
A kind of method that utilization nano bubble is aerated decelerating membrane pollution Download PDFInfo
- Publication number
- CN107174960A CN107174960A CN201710307965.9A CN201710307965A CN107174960A CN 107174960 A CN107174960 A CN 107174960A CN 201710307965 A CN201710307965 A CN 201710307965A CN 107174960 A CN107174960 A CN 107174960A
- Authority
- CN
- China
- Prior art keywords
- shower nozzle
- film
- nano bubble
- membrane
- nano
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
- B01D65/06—Membrane cleaning or sterilisation ; Membrane regeneration with special washing compositions
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a kind of aeration method of nano-bubble generating apparatus, film contamination resistance can be significantly lifted, efficient stable flux is maintained.The method generation that the nano bubble is combined using pressure air-dissolving and hydraulic shear, generating means is made up of parts such as water tank, gas-liquid mixed water pump, nano bubble shower nozzles.In order to reach the purpose of above-mentioned decelerating membrane pollution, the technical solution adopted in the present invention is：Nano bubble shower nozzle is arranged in angle on the film surface of various materials and all kinds of film devices at a certain distance, and in film device running, nano-bubble generating apparatus is opened simultaneously, the nano bubble for producing certain air water when diameter rinses film surface and fenestra, so as to substitute the mode of conventional microporous aeration, the fouling membrane degree for slowing down that water pollutant is caused in film operation is reached.Angle between the nano bubble shower nozzle and film device is preferably arranged to plumbness.
Description
Technical field
The invention belongs to Membrane cleaning technical field, more particularly to a kind of nano-bubble generating apparatus slows down film running
The method of middle fouling membrane.
Background technology
Membrane technology as a kind of water technology, have that effluent characteristics are good, floor space is small in the advanced treating of waste water,
The advantages of automaticity is high.Based on above advantage, film process has been widely applied to Water purification and various waste water advanced places
In the technique of reason.But serious membrane pollution problem hampers a wide range of popularization of this technology.How to solve in film running
The flux that fouling membrane is caused, which declines problem, turns into the greatest problem that all kinds of waste water are more preferably economically handled using membrane technology.It is existing
Tradition to reduce the method for film operation pollution be micro-pore aeration method, this method is simple and easy to apply, but to the control of fouling membrane not
Ideal, the micro-pore aeration method of on-line operation can not reach the good effect that flux declines and reduces fouling membrane that slows down.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of aeration side of nano-bubble generating apparatus
Method, can significantly lift film contamination resistance, maintain efficient stable flux.The nano bubble uses pressure air-dissolving and waterpower
The method generation being combined is sheared, generating means is made up of parts such as water tank, gas-liquid mixed water pump, nano bubble shower nozzles.
In order to reach the purpose of above-mentioned decelerating membrane pollution, the technical solution adopted in the present invention is：By nano bubble shower nozzle
It is arranged on the film surface of various materials and all kinds of film devices, and in film device running, will be received with angle at a certain distance
Rice bubble generator is opened simultaneously, the nano bubble flushing film surface and fenestra of the certain air water of generation when diameter, so as to substitute
The mode of conventional microporous aeration, reaches the fouling membrane degree for slowing down that water pollutant is caused in film operation.
Angle between the nano bubble shower nozzle and film device is preferably arranged to plumbness.
In the present invention, described membrane material refers to various microfiltration membranes and milipore filter；Wherein, the micro-filtration membrane material can
To be Kynoar (PVDF), polysulfones (PSF), polyacrylonitrile (PAN), polyvinyl chloride (PVC), polypropylene (PP), but not
It is only limitted to this；The ultrafiltration membrane material can be Kynoar (PVDF), polyether sulfone (PES), polypropylene (PP), polyethylene
(PE), polysulfones (PS), polypropylene nitrile (PAN), polytetrafluoroethylene (PTFE) (PTFE), it is not limited to this.
In the present invention, described membrane module is various microfiltration membranes and hyperfiltration membrane assembly, specifically include Flat Membrane, tubular membrane,
Rolled film and hollow-fibre membrane, but it is not limited only to this.
In the present invention, described nano-bubble generating apparatus is pressure air-dissolving occurring mode, device mainly by suction line,
Outlet pipeline, four structure compositions of gas-liquid mixed water pump and nano bubble shower nozzle.
In the present invention, described nano bubble shower nozzle can be divided into access type and open type, according to membrane module used not
Together, the shower nozzle of use is also corresponding different.
In the present invention, described nano bubble shower nozzle, it has following corresponding arrangement according to the difference of membrane module：
(1) plate type membrane assembly and curtain hollow fiber film assembly：Using open type shower nozzle, as shown in Figure 1, shower nozzle edge
Flat Membrane center line is arranged symmetrically, and is specifically divided into and is arranged vertically and is arranged in parallel.Perpendicular to the shower nozzle outlet side of film apart from film surface away from
From 5cm-10cm is maintained at, one group is arranged per 10-15cm from plate center along plate length；And bottom is parallel to the shower nozzle of film
Also to be arranged symmetrically, shower nozzle top arranges one per 5-10cm apart from film bottom 3-7cm from plate bottom center along plate is wide
Group.
(2) tubular membrane component：Using access type shower nozzle, shower nozzle is accessed into tubular membrane top and carries out on-line cleaning；For list
Tubular membrane component, membrane module water inlet is directly accessed by shower nozzle, and water inlet 1-2cm is stretched on shower nozzle top；For multitube film group
Part, membrane module water inlet is directly accessed by shower nozzle, and water inlet 2-3cm is stretched on shower nozzle top.
(3) rolled membrane module：Using access type shower nozzle, shower nozzle is directly accessed membrane module water inlet, shower nozzle top is stretched into
Water inlet 1-2cm.
(4) hollow fiber film type component：Using access type shower nozzle, shower nozzle is directly accessed membrane module water inlet, shower nozzle top
Water inlet 2-3cm is stretched at end.
In the present invention, described nano bubble gas-water ratio and nano bubble diameter, according to different type membrane module by following
Relevant parameter is run：
(1) plate type membrane assembly and curtain hollow fiber film assembly：Nano-bubble generator is divided into three kinds of operating conditions：
1. the shower nozzle of vertical film surface is only opened：Nano-bubble generator gas-water ratio is adjusted to 1：10-1：20, nano bubble is straight
Footpath is 1nm-1 μm；
2. the shower nozzle of parallel film surface is only opened：Nano-bubble generator gas-water ratio is adjusted to 1：10-1：20, nano bubble is straight
Footpath is 1nm-1 μm；
3. the shower nozzle of vertical film surface and parallel film surface is opened simultaneously：Nano-bubble generator gas-water ratio is adjusted to 1：10-1：
20, a diameter of 1nm-1 μm of nano bubble；
(2) tubular membrane component：Nano-bubble generator gas-water ratio is adjusted to 1：10-1：40, a diameter of 1nm-1 of nano bubble
μm；
(3) rolled membrane module：Nano-bubble generator gas-water ratio is adjusted to 1：10-1：40, a diameter of 1nm-1 of nano bubble
μm；
(4) hollow fiber film type component：Nano-bubble generator gas-water ratio is adjusted to 1：10-1：40, nano bubble diameter
For 1nm-1 μm；
In the present invention, described waste water can be all types of industries waste water, include but are not limited to what is gone out given in embodiment
Handle case.
It is characteristic of the invention that physical cleaning effect of the first public utilization nano bubble in film running, to film table
Face and fenestra are effectively rinsed, compared with prior art, can slow down significantly in membrane filtration processes pollutant on film surface with
Attachment in fenestra, and flushing action can be produced to attached pollutant so that fouling membrane is effectively controlled.In actual case
In example operation, common film filter is contrasted using the membrane flux of nano bubble on-line cleaning, 90% can be maintained in long-time
More than.
Brief description of the drawings
The nano bubble of accompanying drawing 1 handles the nozzle layout of sprinkler schematic diagram of Flat Membrane and curtain hollow fiber film assembly.
The nozzle layout of sprinkler schematic diagram of the nano bubble of accompanying drawing 2 processing tubular type, rolling and hollow-fibre membrane.
In figure：1st, water pump；2nd, inlet gage；3rd, inlet valve；4th, hyperfiltration membrane assembly；5th, reactive tank water tank；6th, circulate
Water pump；7th, electromagnetic flowmeter；8th, water pump water outlet tube valve；9th, water feeding of water pump tube valve；10th, tube valve is emptied.
Embodiment
Technical scheme is further described with reference to embodiment, but is not limited thereto, it is every right
Technical solution of the present invention is modified or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, all should be contained
Cover in protection scope of the present invention.
Embodiment 1
One kind nano bubble method processing ternary oil recovery waste water Kynoar (PVDF) Flat Membrane and curtain doughnut
The method of the on-line cleaning of membrane module, its process is：Flat Membrane or curtain hollow-fibre membrane are immersed in film device (such as accompanying drawing
Shown in 1)；Nano bubble shower nozzle is arranged by diagramatic way, and 5cm is maintained at apart from film surface distance perpendicular to the shower nozzle outlet side of film,
One group is arranged per 10cm from plate center along plate length；And bottom parallel to film shower nozzle also to be arranged symmetrically, shower nozzle top away from
From film bottom 3cm, one group is arranged per 5cm from plate bottom center along plate is wide；While membrane filtration, gas nano bubble hair is opened
Generating apparatus, regulation gas-water ratio is 1：10-1：20, nano bubble diameter control is 10-100 nanometers.1. when only opening vertical film surface
Shower nozzle when, in the presence of nano bubble on-line cleaning, membrane flux can maintain more than 92% all the time.2. when only opening parallel
During the shower nozzle of film surface, membrane flux can maintain more than 95% all the time.3. when the shower nozzle for opening vertical film surface and parallel film surface simultaneously
When, membrane flux can maintain more than 97% all the time.
Embodiment 2
One kind nano bubble method processing ternary oil recovery waste water Kynoar (PVDF) Flat Membrane and curtain doughnut
The method of the on-line cleaning of membrane module, its process is：Flat Membrane or curtain hollow-fibre membrane are immersed in film device (such as accompanying drawing
Shown in 1)；Nano bubble shower nozzle is arranged by diagramatic way, and 10cm is maintained at apart from film surface distance perpendicular to the shower nozzle outlet side of film,
One group is arranged per 15cm from plate center along plate length；And bottom parallel to film shower nozzle also to be arranged symmetrically, shower nozzle top away from
From film bottom 7cm, one group is arranged per 10cm from plate bottom center along plate is wide；While membrane filtration, nano bubble hair is opened
Generating apparatus, regulation gas-water ratio is 1：10-1：20, nano bubble diameter control is 10-200 nanometers.1. when only opening vertical film surface
Shower nozzle when, in the presence of nano bubble on-line cleaning, membrane flux can maintain more than 90% all the time.2. when only opening parallel
During the shower nozzle of film surface, membrane flux can maintain more than 93% all the time.3. when the shower nozzle for opening vertical film surface and parallel film surface simultaneously
When, membrane flux can maintain more than 95% all the time.
Experimental example 3
The side of one kind on-line cleaning of nano bubble method processing fish meal processing waste water polytetrafluoroethylene (PTFE) (PTFE) tubular membrane
Method, its process is：Nano bubble shower nozzle is directly accessed tubular membrane component water inlet (as shown in Figure 2), shower nozzle top is stretched into
Water inlet 1cm；While membrane filtration, nano-bubble generating apparatus is opened, regulation gas-water ratio is 1：10-1：40, nano bubble
Diameter control is that this method can make polytetrafluoroethylene (PTFE) membrane flux maintain more than 92.4% all the time within 200 nanometers.And similarity condition
Under, only shower nozzle top is stretched into water inlet distance is changed to 2cm, and this method can make polytetrafluoroethylene (PTFE) membrane flux maintain 93.7% all the time
More than.
Experimental example 4
A kind of method of the on-line cleaning of use nano bubble method processing dyeing waste water polyether sulfone rolled film, its process is：Will
Nano bubble shower nozzle is directly accessed rolled membrane module water inlet (as shown in Figure 2), and water inlet 1cm is stretched on shower nozzle top；In film
While filtering, nano-bubble generating apparatus is opened, regulation gas-water ratio is 1：10-1：40, nano bubble diameter control is received for 200
Within rice, this method can make polytetrafluoroethylene (PTFE) membrane flux maintain more than 91.4% all the time.And under similarity condition, only by shower nozzle top
Stretch into water inlet distance and be changed to 2cm, this method can make polytetrafluoroethylene (PTFE) membrane flux maintain more than 93.4% all the time.
Experimental example 5
A kind of method of the on-line cleaning of use nano bubble method processing electroplating wastewater hollow-fibre membrane, its process is：It will receive
Rice bubble shower nozzle is directly accessed rolled membrane module water inlet (as shown in Figure 2), and water inlet 2cm is stretched on shower nozzle top；In film mistake
While filter, nano-bubble generating apparatus is opened, regulation gas-water ratio is 1：10-1：40, nano bubble diameter control is 200 sodium rices
Within, this method can make polytetrafluoroethylene (PTFE) membrane flux maintain more than 90.7% all the time.And under similarity condition, only stretch shower nozzle top
Enter water inlet distance and be changed to 3cm, this method can make polytetrafluoroethylene (PTFE) membrane flux maintain more than 92.2% all the time.
Claims (10)
1. a kind of method that utilization nano bubble is aerated decelerating membrane pollution, it is characterized in that, by nano bubble shower nozzle at a certain distance
It is arranged on all kinds of film devices of various materials (or function film surface), and in film device running, nano bubble is sent out
Generating apparatus is opened simultaneously, and the nano bubble for producing certain air water when diameter rinses the film surface and fenestra of all kinds of film devices.
2. the method that utilization nano bubble according to claim 1 slows down fouling membrane in film running, it is characterised in that
Its film object handled is various microfiltration membranes and milipore filter；Wherein, the membrane material can be Kynoar (PVDF), gather
Sulfone (PSF), polyacrylonitrile (PAN), polyvinyl chloride (PVC), polypropylene (PP), polyether sulfone (PES), polyethylene (PE), polytetrafluoro
Ethene (PTFE) etc., but it is not limited only to this.
3. the method that utilization nano bubble according to claim 1 slows down fouling membrane in film running, it is characterised in that
The applicable membrane module of this method is various microfiltration membranes and hyperfiltration membrane assembly, specifically includes Flat Membrane, tubular membrane, rolled film and hollow
Tunica fibrosa, but it is not limited only to this.
4. the method that utilization nano bubble according to claim 1 slows down film operation pollution, it is characterised in that used
Nano-bubble generating apparatus is various pressure air-dissolving nano-bubble generating apparatus, a diameter of 1nm-1 μ of its nano bubble that can be produced
M, uses gas-water ratio for 1：10-1：Between 100.
5. the utilization nano bubble according to claim 1 and 4 slows down the method for fouling membrane in film running, its feature
It is the shower nozzle of used nano-bubble generating apparatus, access type and open type can be divided into, according to membrane module used not
Together, the shower nozzle of use is also corresponding different.
6. the method that the utilization nano bubble according to claim Isosorbide-5-Nitrae and 5 slows down fouling membrane in film running, it is special
Levy and be shower nozzle used by different type membrane module using following arrangement：
(1) plate type membrane assembly and curtain hollow fiber film assembly：Using open type shower nozzle, as shown in Figure 1, shower nozzle is along flat board
Film center line is arranged symmetrically, and is specifically divided into and is arranged vertically and is arranged in parallel.Protected perpendicular to the shower nozzle outlet side of film apart from film surface distance
Hold in 5cm-10cm, one group is arranged per 10-15cm from plate center along plate length；And bottom is also symmetrical parallel to the shower nozzle of film
Arrangement, shower nozzle top arranges one group per 5-10cm apart from film bottom 3-7cm from plate bottom center along plate is wide.
(2) tubular membrane component：Using access type shower nozzle, shower nozzle is accessed into tubular membrane top；For single hose membrane module, by shower nozzle
Membrane module water inlet is directly accessed, water inlet 1-2cm is stretched on shower nozzle top；For multitube membrane module, shower nozzle is directly accessed
Water inlet 2-3cm is stretched on membrane module water inlet, shower nozzle top.
(3) rolled membrane module：Using access type shower nozzle, shower nozzle is directly accessed membrane module water inlet, shower nozzle top is stretched into water
Mouth 1-2cm.
(4) hollow fiber film type component：Using access type shower nozzle, shower nozzle is directly accessed membrane module water inlet, shower nozzle top is stretched
Enter water inlet 2-3cm.
7. according to claim Isosorbide-5-Nitrae, the method that the utilization nano bubble described in 5 and 6 slows down fouling membrane in film running, its
It is characterised by that nano-bubble generator is run according to different type membrane module by following parameter：
(1) plate type membrane assembly and curtain hollow fiber film assembly：Nano-bubble generator is divided into three kinds of operating conditions：
1. the shower nozzle of vertical film surface is only opened：Generator gas-water ratio is adjusted to 1：10-1：20, a diameter of 1nm-1 μm of nano bubble；
2. the shower nozzle of parallel film surface is only opened：Generator gas-water ratio is adjusted to 1：10-1：20, a diameter of 1nm-1 μm of nano bubble；
3. the shower nozzle of vertical film surface and parallel film surface is opened simultaneously：Generator gas-water ratio is adjusted to 1：10-1：20, nano bubble is straight
Footpath is 1nm-1 μm；
(2) tubular membrane component：Generator gas-water ratio is adjusted to 1：10-1：40, a diameter of 1nm-1 μm of nano bubble；
(3) rolled membrane module：Generator gas-water ratio is adjusted to 1：10-1：40, a diameter of 1nm-1 μm of nano bubble；
(4) hollow fiber film type component：Generator gas-water ratio is adjusted to 1：10-1：40, a diameter of 1nm-1 μm of nano bubble.
8. the method that the utilization nano bubble according to claim 1 slows down film operation pollution, it is characterised in that it is adapted to
In the microfiltration membranes and milipore filter of various materials, various types of microfiltration membranes, hyperfiltration membrane assembly are also suitable for.
9. the method that the utilization nano bubble according to claim 1 slows down film operation pollution, it is characterised in that this method
Applicable object, including all types of industries wastewater treatment, Water purification.
10. the method that the utilization nano bubble according to claim 1 slows down film operation pollution, it is characterised in that described
Angle between nano bubble shower nozzle and film device is preferably arranged to plumbness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307965.9A CN107174960A (en) | 2017-05-04 | 2017-05-04 | A kind of method that utilization nano bubble is aerated decelerating membrane pollution |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307965.9A CN107174960A (en) | 2017-05-04 | 2017-05-04 | A kind of method that utilization nano bubble is aerated decelerating membrane pollution |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107174960A true CN107174960A (en) | 2017-09-19 |
Family
ID=59830999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307965.9A Pending CN107174960A (en) | 2017-05-04 | 2017-05-04 | A kind of method that utilization nano bubble is aerated decelerating membrane pollution |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107174960A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108499365A (en) * | 2018-03-26 | 2018-09-07 | 湖州科滤膜技术有限公司 | A kind of water purification miillpore filter pipe outer wall automatic cleaning apparatus |
| CN108640389A (en) * | 2018-05-31 | 2018-10-12 | 同济大学 | The method and micro-nano bubble-vacuum membrane distillation for handling waste water desalination couple desalination system |
| CN112823051A (en) * | 2018-07-03 | 2021-05-18 | 复成膜业有限公司 | Closely spaced flat submerged membranes and fine bubble aeration |
| CN114028952A (en) * | 2021-11-10 | 2022-02-11 | 中国石油大学(北京) | Membrane separation device and system capable of effectively reducing membrane pollution |
| CN115400599A (en) * | 2022-09-22 | 2022-11-29 | 广东汇祥环境科技有限公司 | Green and efficient device and method for cleaning MBR membrane in offline recovery manner by using micro-nano bubbles |
Citations (1)
| 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 |
-
2017
- 2017-05-04 CN CN201710307965.9A patent/CN107174960A/en active Pending
Patent Citations (1)
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108499365A (en) * | 2018-03-26 | 2018-09-07 | 湖州科滤膜技术有限公司 | A kind of water purification miillpore filter pipe outer wall automatic cleaning apparatus |
| CN108499365B (en) * | 2018-03-26 | 2020-12-01 | 徐州云创物业服务有限公司 | Automatic cleaning device for outer wall of water purification microporous filter membrane pipe |
| CN108640389A (en) * | 2018-05-31 | 2018-10-12 | 同济大学 | The method and micro-nano bubble-vacuum membrane distillation for handling waste water desalination couple desalination system |
| CN112823051A (en) * | 2018-07-03 | 2021-05-18 | 复成膜业有限公司 | Closely spaced flat submerged membranes and fine bubble aeration |
| CN114028952A (en) * | 2021-11-10 | 2022-02-11 | 中国石油大学(北京) | Membrane separation device and system capable of effectively reducing membrane pollution |
| CN115400599A (en) * | 2022-09-22 | 2022-11-29 | 广东汇祥环境科技有限公司 | Green and efficient device and method for cleaning MBR membrane in offline recovery manner by using micro-nano bubbles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107174960A (en) | A kind of method that utilization nano bubble is aerated decelerating membrane pollution | |
| CN1471424A (en) | Fiber membrane arrangement | |
| CN102417210A (en) | Immersed vacuum membrane distillation plant and sewage treatment technology using the same | |
| US10159940B2 (en) | Method for cleaning hollow fiber membrane module | |
| SG186047A1 (en) | Immersion type membrane module unit and membrane separation activated sludge process equipment | |
| CN104474906A (en) | Method for controlling membrane pollution in pulse feed mode | |
| EP2342316A1 (en) | Method for the filtration of a bioreactor liquid from a bioreactor; cross-flow membrane module, and bioreactor membrane system | |
| CN105688674A (en) | Membrane treatment process device and processing method thereof | |
| CN205419894U (en) | Anti - washing unit of no pump MBR diaphragm | |
| CN204848422U (en) | Submergence formula membrane filter equipment that two -way liquid stream erodees | |
| CN211620065U (en) | Double-membrane self-cleaning membrane bioreactor based on Fenton reaction | |
| JP5439344B2 (en) | Membrane separation biological treatment equipment | |
| CN206188521U (en) | Water treatment facilities is synthesized with MCR ultrafiltration to active carbon | |
| KR100999945B1 (en) | Air relif device for membrane filter pipe | |
| CN105967381A (en) | Treatment method of high-silicon oily wastewater | |
| CN201495150U (en) | Cold-reduced oil-containing waste water treatment device | |
| JP2009214062A (en) | Operation method of immersion type membrane module | |
| CN210934523U (en) | Mixing device for gas-liquid two-phase flow for improving membrane flux | |
| KR20180114820A (en) | Antifouling Hollow fiber membrane module, Method for preparing the same and Uses thereof | |
| CN101948167B (en) | Membrane bioreactor for sewage treatment | |
| CN201850185U (en) | Domestic water treatment device | |
| KR20120044594A (en) | Air diffuser forming separated diffuser frame and air chamber | |
| CN204151125U (en) | A kind of precoated dynamic membrane catalytic oxidation treatment organic waste water device | |
| CN1272090C (en) | Air bubble circulation flow type hollow fibrous membrane separating device | |
| Nabilah et al. | Finned spacer panel system for fouling control in Chlorella vulgaris harvesting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170919 |
|
| WD01 | Invention patent application deemed withdrawn after publication |