CN2647418Y - Membrane filtration backflushing device - Google Patents
Membrane filtration backflushing device Download PDFInfo
- Publication number
- CN2647418Y CN2647418Y CN 200320110568 CN200320110568U CN2647418Y CN 2647418 Y CN2647418 Y CN 2647418Y CN 200320110568 CN200320110568 CN 200320110568 CN 200320110568 U CN200320110568 U CN 200320110568U CN 2647418 Y CN2647418 Y CN 2647418Y
- Authority
- CN
- China
- Prior art keywords
- membrane
- liquid
- membrane filtration
- backflushing
- fluid
- 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.)
- Expired - Lifetime
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- 238000005374 membrane filtration Methods 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 39
- 239000012528 membrane Substances 0.000 claims abstract description 28
- 239000012530 fluid Substances 0.000 claims description 33
- 238000001802 infusion Methods 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 4
- 229910052571 earthenware Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims 1
- 239000007769 metal material Substances 0.000 claims 1
- 239000000843 powder Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 abstract description 2
- 239000012982 microporous membrane Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Images
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides a membrane filtration recoil device, which eliminates the pollution of micro-fine powder to the membrane surface and pore canal through liquid recoil. The device mainly comprises a microporous membrane separator, a liquid buffer tank, a liquid level controller, a liquid supplementing pump and a liquid storage tank. The device starts a backflushing system in due time according to the membrane pollution condition, so that the pressure of the permeation side is higher than that of the circulation side, automatic backflushing is realized, and the backflushing pressure is maintained by a compressed air source so as to be stable; the liquid level in the buffer tank is controlled by a liquid level controller, so that the liquid replenishing pump is started and stopped in time, and a certain safe liquid level is kept in the tank; after the back flushing is finished, compressed gas does not need to be emptied. The membrane filtration backflushing device has stable backflushing pressure and does not need emptying, thereby having the advantages of convenient operation, economy, environmental protection and the like and being capable of being popularized and used.
Description
(technical field)
The utility model relates to a kind of can the recoil to filter membrane and removes the membrane filtration recoiling device that film pollutes.
(background technology)
From fine or superfine powder suspension, filter to isolate liquid component with organic film or inoranic membrane, it is a kind of faster solid-liquid separation technique of development in recent years, compare with the isolation technics of routine, have efficient height, low, the no phase transformation of energy consumption, install series of advantages such as simple, easy to operate, be widely used in fields such as chemical industry, water treatment, food and biochemical industry, metal industry, weaving and leather industry, paper industry, medical industry, national defense industry at present.
Be provided with inoranic membrane or organic film with support body supports in the membrane separator, wherein inoranic membrane generally is coated on ceramic body (pipe) supporter with inorganic porous membrane and forms.In the filter process, liquid material constantly sees through from fenestra, enters the side that sees through of film, and the fine powder of solid is trapped and is deposited on the face, stops up the micro channel of film, produces film and pollutes, cause membrane flux and selectivity to descend, thereby reduced production efficiency, shortened service life of film.Therefore, remove the fine powder deposit in face and the duct, it is important step very important in the membrane filtration that controlling diaphragm pollutes in good time.At present, adopt back-flushing technique that film is carried out inverse osmosis usually, get express developed, reach the purpose of removing contamination.
Conventional recoiling device contains a surge tank that liquid (can be cleaner liquid or water) is housed, pot liquid oppositely passes through fenestra rapidly under the promotion of high-pressure air source, the pollutant in film surface and the duct is dashed take off, membrane flux is restored, and filtration resistance reduces.Recoil finishes, and surge tank palpus exhaust topping up is prepared against when recoiling next time and used.There are a lot of problems in the recoiling device of this routine: the recoil pressure transient; The Compressed Gas consumption is big; A large amount of Compressed Gas is not only wasted in emptying, but also takes the part penetrating fluid out of, when penetrating fluid is poisonous, also can cause environmental pollution.For the membrane filtration of organic solution, the problem that conventional backwash method faced is more.Therefore, be necessary existing recoiling device and method are improved.
(summary of the invention)
In order to solve the problems referred to above of existing backwash method, the purpose of this utility model provides a kind of pressure stability that recoils, does not need the inorganic membrane filtration recoiling device of emptying.
The utility model inorganic membrane filtration recoiling device comprises membrane separator and fluid cushion jar of establishing microporous barrier in one.Membrane separator is provided with that the import and export that contains solid suspension is taken over and the delivery outlet of cleaner liquid is taken over; Fluid cushion jar upper end is provided with pneumatic supply and takes over and air pressure valve, the surge tank lower end links to each other with the side that sees through of membrane separator with pipeline and recoil valve, surge tank links to each other with the fluid infusion pump by make-up valve, also is provided with the fluid level controller of control surge tank liquid level between surge tank and fluid infusion pump; The import of fluid infusion pump connects fluid reservoir.Fluid level controller in this device can be selected for use from commercially available multiple level sensing controller.
During the recoil of this device, liquid in the surge tank (can adopt cleaner liquid, water or other liquid according to arts demand) pressure is higher than membrane separator pressure, backwash liquid enters circulation side from the side that sees through of film pipe by the fenestra inverse osmosis, thereby towards demoulding pollutant, recovery membrane flux; Recoil pressure can pass through the compressed gas source pressurize, feasible recoil pressure stability, thus the recoil process is carried out reposefully; After recoil finishes, do not need the emptying Compressed Gas, avoid waste Compressed Gas and buffering liquid can be because of not emitting harmful liquid contaminated environment yet; Liquid level in the surge tank, is opened pump and carry liquid in surge tank when liquid level is lower than some values by fluid level controller and the control of fluid infusion pump, when liquid level is higher than some values, and termination of pumping, concrete high and low level value wherein is fixed according to actual needs.
In sum, the utility model membrane filtration recoiling device makes in the surge tank by fluid level controller and keeps need not emptying after certain liquid level, recoil pressure stability, the recoil, so pot liquid can not taken out of because of emptying, has eliminated environmental pollution problems.This device is saved the compressed gas consumption, and has plurality of advantages such as easy to operate, economy, environmental protection.
(description of drawings)
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 represents the formation schematic diagram of conventional inorganic membrane filtration recoiling device.
Fig. 2 is the formation schematic diagram of the utility model inorganic membrane filtration recoiling device.
Conventional backwash method is undertaken by Fig. 1 device, the following pipe nipple 1-1 of inoranic membrane separator 1 and last pipe nipple 1-2 and separator 1 are formed the circulatory system (with the dotted line signal), powder suspension to be separated is pressed into by entrance sleeve 1-1, inorganic membrane filtration in separator 1 is isolated cleaner liquid and is exported by valve 2-1; The suspension that does not see through is discharged by enrichment and from outlet 1-2, continues circulation and separates.Reach when to a certain degree needing to recoil when film pollutes, shut off valve 2-1 opens recoil valve 2-2, high-pressure air source valve 2-3; Liquid in the surge tank 3 is gone into membrane separator 1 by valve 2-2 under high pressure gas promotes, oppositely see through fenestra, and the pollutant in film surface and the duct is dashed take off, and sneaks in the suspended material, participate in recirculation and separate, thereby membrane flux is recovered.Recoil finishes, and closes High-pressure air valve 2-3, open atmospheric valve 2-6 emptying after, close valve 2-6 and 2-2, open valve 2-1 and enter the normal filtration state.
(specific embodiment)
Fig. 2 is the utility model one embodiment schematic diagram, and film pipe 1-3 is housed in the membrane separator 1, and it is made up of ceramic support pipe and the inorganic microporous barrier that is coated on the earthenware inner surface, and managing outer is to see through side, manages interior for not seeing through side (or title circulation side); Fine powder suspension to be separated is fed in the film pipe by inlet tube 1-1 under certain pressure, and the side that sees through of film goes out cleaner liquid, and from pipe 2-1 output, the enrichment material that does not see through is discharged from pipe 1-2, continues separation recycling (circulation route omits among the figure).The bottom discharge nozzle of fluid cushion jar 3 is connected to the side that sees through of film filter 1, between recoil valve 2-2 is arranged.The top of fluid cushion jar 3 connects compressed gas source, controls by valve 2-3.Liquid level in the fluid cushion jar 3 is by fluid level controller 4 and 5 controls of fluid infusion pump.The entrance point of pump 5 is connected with a fluid reservoir 6, between valve 2-4 (generally be in normally open, close this valve when pump is unusual, maintenance pump) is arranged; Pump 5 outlets link to each other with fluid cushion jar 3, and there is make-up valve 2-5 the centre.
During normal filtration, valve 2-2 closes, and valve 2-1 opens; During recoil, shut off valve 2-1 opens valve 2-2, and the fluid pressure in the surge tank 3 is higher than circulation side pressure, and backflush liquid oppositely enters circulation side by fenestra, pollutes, recovers membrane flux thereby eliminate film; Behind the certain hour, shut off valve 2-2 opens valve 2-1 again and enters the normal filtration state, is carrying out so again and again.When the pressure in the surge tank 3 is lower than setting value, open valve 2-3, additional Compressed Gas makes recoil pressure keep definite value; When liquid level in the surge tank 3 is lower than the B point, open fluid infusion pump 5 by fluid level controller 4, open make-up valve 2-5, the liquid in the fluid reservoir 6 is conveyed in the fluid cushion jar 3; Liquid level in surge tank 3 is higher than the A time of ordering, and stops fluid infusion pump 5 by fluid level controller 4, shut off valve 2-5.Valve 2-4 often leaves, and closes when having only the maintenance pump.A, B point is setting value, and generally speaking, B point liquid level is 30～70% of a surge tank height, and A point liquid level is 90～95% of a surge tank height.
Claims (5)
1. membrane filtration recoiling device, establish the membrane separator (1) and the fluid cushion jar (3) of microporous barrier in comprising, membrane separator (1) is provided with the delivery outlet adapter valve (2-1) that the solid suspension import and export is taken over (1-1), (1-2) and cleaner liquid, fluid cushion jar (3) is provided with pneumatic supply and takes over and air valve (2-3), the lower end links to each other with the side that sees through of membrane separator with pipeline and recoil valve (2-2), it is characterized in that surge tank (3) links to each other with fluid infusion pump (5), and between also be provided with fluid level controller (4), the import of fluid infusion pump (5) is connected to fluid reservoir (6).
2. membrane filtration recoiling device according to claim 1 is characterized in that the microporous barrier in the said membrane separator (1) is by the fixing organic film of supporter.
3. membrane filtration recoiling device according to claim 1 is characterized in that the microporous barrier in the said membrane separator (1) is to be the inoranic membrane of supporter with the pottery.
4. membrane filtration recoiling device according to claim 3 is characterized in that said film support is an earthenware, and inoranic membrane is coated on the inwall or the outer wall of earthenware, forms inorganic film tube (1-3).
5. according to claim 3 or 4 described membrane filtration recoiling devices, it is characterized in that said inoranic membrane can choose pottery, metal material or their composite material film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110568 CN2647418Y (en) | 2003-11-03 | 2003-11-03 | Membrane filtration backflushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110568 CN2647418Y (en) | 2003-11-03 | 2003-11-03 | Membrane filtration backflushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2647418Y true CN2647418Y (en) | 2004-10-13 |
Family
ID=34343783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110568 Expired - Lifetime CN2647418Y (en) | 2003-11-03 | 2003-11-03 | Membrane filtration backflushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2647418Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174211A (en) * | 2014-07-31 | 2014-12-03 | 成都易态科技有限公司 | Back-flushing system of liquid filter and back-flushing device applied to back-flushing system |
| US9028622B2 (en) | 2008-05-30 | 2015-05-12 | Beijing Ecojoy Water Technology Co., Ltd. | Method and apparatus for cleaning a film seperating device |
| CN106628682A (en) * | 2016-11-14 | 2017-05-10 | 湖南省客来宝生物能源科技有限公司 | Non-return liquid storing tank with ecologically degradable membrane |
| CN107081003A (en) * | 2017-06-10 | 2017-08-22 | 武汉中舟环保设备股份有限公司 | A kind of river filter peculiar to vessel and its from purging method |
| CN113274884A (en) * | 2021-05-25 | 2021-08-20 | 重庆中轻装备有限公司 | Activated carbon ceramic membrane cross-flow filtration system and filtration backwashing process |
| CN113476929A (en) * | 2021-05-31 | 2021-10-08 | 成都思达能环保设备有限公司 | Backflushing device and backflushing method for filter element |
-
2003
- 2003-11-03 CN CN 200320110568 patent/CN2647418Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9028622B2 (en) | 2008-05-30 | 2015-05-12 | Beijing Ecojoy Water Technology Co., Ltd. | Method and apparatus for cleaning a film seperating device |
| CN104174211A (en) * | 2014-07-31 | 2014-12-03 | 成都易态科技有限公司 | Back-flushing system of liquid filter and back-flushing device applied to back-flushing system |
| CN106628682A (en) * | 2016-11-14 | 2017-05-10 | 湖南省客来宝生物能源科技有限公司 | Non-return liquid storing tank with ecologically degradable membrane |
| CN107081003A (en) * | 2017-06-10 | 2017-08-22 | 武汉中舟环保设备股份有限公司 | A kind of river filter peculiar to vessel and its from purging method |
| CN113274884A (en) * | 2021-05-25 | 2021-08-20 | 重庆中轻装备有限公司 | Activated carbon ceramic membrane cross-flow filtration system and filtration backwashing process |
| CN113476929A (en) * | 2021-05-31 | 2021-10-08 | 成都思达能环保设备有限公司 | Backflushing device and backflushing method for filter element |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131103 Granted publication date: 20041013 |