CN1524606A - Film filtering equipment - Google Patents
Film filtering equipment Download PDFInfo
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- CN1524606A CN1524606A CNA031069177A CN03106917A CN1524606A CN 1524606 A CN1524606 A CN 1524606A CN A031069177 A CNA031069177 A CN A031069177A CN 03106917 A CN03106917 A CN 03106917A CN 1524606 A CN1524606 A CN 1524606A
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- filtered solution
- film filter
- stop valve
- water
- valve
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Abstract
The invention is a membrane-filtering device with a membrane filter, its one end set with a filtrate outlet and its other end set with a discharge hatch, its one side set with a feed liquid inlet, the transfer pipeline linked with the feed inlet set with a feed liquid pump, the transfer pipeline linked with the filtrate outlet a filter cutoff valve, the transfer pipeline linked with the discharge hatch set with discharge valve, a filtrate channel between the membrane filter and the filtrate cutoff valve set with an air chamber tube, a pressure switch linked with the filtrate channel, and a program controller linked with the feed liquid pump, pressure switch, discharge valve and filtrate cutoff valve. It is applied to purification of water or liquid.
Description
Technical field
The present invention relates to water treatment used can intermittent backwash a kind of film filter.
Background technology
Adopt membrane separation technique to do the preliminary treatment of various water treatment systems, make water treatment system become a kind of full embrane method treatment system, be the important goal that the embrane method water treatment field is paid close attention to and constantly studied always.Because the raw water quality complexity that the embrane method preconditioning technique need be handled, there are various impurity, particle, colloid and organic matter in the water, they can cause the pollution and the obstruction of film after by face very soon, lacking preferably before the film properties recovery technology, are difficult to enter commercial the application.Ultra filtration continuously; also claim dead-end filtration; it is a kind of new film application technology that grew up in nearly 2 years; be mainly used in the preliminary treatment of various water; preliminary treatment as seawater; the preliminary treatment of river; the waste water after the wastewater treatment plant two stage treatment and the processing of micro-polluted water; it adopts higher membrane material of intensity and the filter structure that is beneficial to backwash; after former water enters filter, through the filtration of milipore filter or micro-filtration membrane, in theory greater than the particle of membrane aperture or colloid tunicle surface barrier all; see through the particle or the colloid that only contain in theory in the water of film less than membrane aperture; along with the prolongation of filtration time, inevitably produce on the face and pollute colloid; particle and organic matter all can be deposited in film surface and the fenestra; make film see through the water yield and descend, resistance rises.The ultra filtration technology comprises the backwash process of film continuously, by regularly frequent backwash, in time remove particle, colloid and organic matter in polluted membrane surface and the fenestra, recover the strainability of film, conventional technology is to adopt a recoil pump, regularly produces water with molecular filter molecular filter is carried out backwash.During backwash, need intake pump is closed, drain valve is opened, and the backwash inlet valve is opened, and with producing the big flow recoil of water pump, system need adopt programme-control then; Adopt this backwash process to come regularly backwash membrane filter, effect is preferably arranged, but since during backwash by the pump pressurization, produce water end (W.E.) and initially do not have pressure, along with this hydraulic pressure of rising of pump pressure just rises in backwash, the speed of pulsation flushing is also fast inadequately, the effect of backwash is not very desirable, and the product water yield that consumes is bigger, in running owing to need constantly open, stop charging liquid pump and backwashing pump, energy consumption is big, also influences the service life of equipment.
The Chinese invention patent ublic specification of application of publication number CN1321540A has disclosed a kind of membrane back-washing equipment of cross-flow type membrane filtration system, and this equipment comprises cylinder body, liquid cylinder piston, cylinder piston etc., also need be equipped with source of the gas, and structure is complicated.
Summary of the invention
It is easily contaminated that the present invention will solve existing film filter filter membrane, backwash process is complicated, the backwash effect is not good enough, the filtered water consumption is big during backwash, and energy consumption is big, the problem that equipment service life is short, thereby provide a kind of film filter of the present invention, the backwash of this device is convenient, and the filtered water consumption is less, and energy consumption is less.
For addressing the above problem, the technical solution that film filter of the present invention adopts is that this device has film filter, the one end is provided with the filtered solution outlet, its other end is provided with floss hole, the one side is provided with liquor inlet, liquid-transport pipe-line that liquor inlet connects is provided with the charging liquid pump, filtered solution outlet connect liquid-transport pipe-line and be provided with the filtered solution stop valve, liquid-transport pipe-line that floss hole connects is provided with drain valve, its special character is to be provided with water-gas to press coexisting body mutually on the filtered solution between film filter and the filtered solution stop valve is flowed through passage, is provided with cyclelog and charging liquid pump, drain valve links to each other with the filtered solution stop valve.
Described water-gas presses coexisting body to be meant mutually: the bellow pot that connected on the passage set air bag in it of flowing through of the filtered solution between filtered solution outlet and filtered solution stop valve.
Described water-gas presses coexisting body also can be meant mutually: the film filter end inner chamber and the interior set air bag thereof that link to each other with the filtered solution outlet.
Described water-gas presses coexisting body to be meant mutually: water pocket that is connected on the filtered solution between filtered solution outlet and the filtered solution stop valve is flowed through passage and the peripheral water pocket tube of establishing that seals thereof.
The present invention can be provided with pressure switch and the filtered solution between film filter and the filtered solution stop valve passage of flowing through and link to each other, and described cyclelog pressure switch therewith links to each other.
Drain valve of the present invention and filtered solution stop valve can be electronic keying valve or pneumatic keying valve.
Described cyclelog can be a commercially available finished product programmable controller (PLC), can use after programming; Also can be the composite set of the time relay and auxiliary reclay, behind the setting-up time pull up time, can use.
It is t that cyclelog can be set this device normal filtration time period
1, the reservoir pressure time period is t before the backwash
2, the backwash time period is t
3
The present invention is when being provided with described pressure switch, and cyclelog can not established time period t
2, t
3
Film filter of the present invention will be used described water-gas and press coexisting body mutually when carrying out backwash.Film filter of the present invention is normally running to setting-up time section t
1Described cyclelog sends instruction, close the filtered solution stop valve earlier, the hydraulic pressure that filtered solution between film filter and the filtered solution stop valve is flowed through in the passage rises, water-gas presses the gas in the coexisting body to be compressed mutually, make the filtered solution side both store the filtered solution that is used for backwash, stored again from the pressure energy of filtered solution side backwash.To setting-up time section t
2The time, cyclelog sends instruction, open drain valve, the instantaneous decline of filter membrane liquid feeding side pressure this moment, there is reverse pressure reduction in the filter membrane both sides, and press mutually in the coexisting body under the compressed gas effect at water-gas, and the rapid press filtration film of filtered solution is discharged from drain valve, the filtered solution lateral pressure also descends rapidly simultaneously, to setting-up time section t
3The time, cyclelog sends instruction, and the filtered solution stop valve is opened, and closes drain valve simultaneously, finishes backwash operation, changes the normal filtration operation over to.
The present invention presses coexisting body mutually owing to be provided with water-gas on the filtered solution between film filter and the filtered solution stop valve is flowed through passage, the filtered solution lateral pressure raises in the time of can making backwash, gas is compressed simultaneously, the filtration liquid measure of filtered solution side increased when gas was compressed, during backwash, boosting also under the effect of Compressed Gas, the filtered solution of increment can effectively oppositely filter filter membrane, filter membrane is carried out backwash, so backwash of the present invention is convenient, effective, can install normal course of operation discontinuous ground at this and implement backwash, the charging liquid pump need not to open and close repeatedly, and product filtrate consumption is few; This device also has simple in structure, the characteristics of long service life.
Description of drawings
Fig. 1 is film filter one an example structure schematic diagram of the present invention;
Fig. 2 is another example structure schematic diagram of film filter of the present invention.
Be labeled as among the figure: 1 drain valve, 2 discharging product, 3 film filters, the outlet of 4 filtered solutions, 5 bellow pots, 6 filtered solution stop valves, 7 cyclelogs, 8 pressure switches, 9 air bags, 10 liquor inlet, 11 charging liquid pumps, 12 water pockets, 13 water pocket tubes.
The specific embodiment
Film filter, as shown in Figure 1, has film filter 3, the one end is provided with filtered solution outlet 4, its other end is provided with floss hole 2, the one side is provided with liquor inlet 10, liquor inlet 10 connect liquid-transport pipe-line and be provided with charging liquid pump 11,4 companies of filtered solution outlet liquid-transport pipe-line is provided with filtered solution stop valve 6, floss hole 2 connect liquid-transport pipe-line and be provided with drain valve 1, filtered solution between film filter 3 and filtered solution stop valve 6 is flowed through and is connected with bellow pot 5 on the passage and is provided with air bag 9 in it, be provided with pressure switch 8 and the filtered solution between film filter 3 and the filtered solution stop valve 6 passage of flowing through and link to each other, be provided with cyclelog 7 and charging liquid pump 11, pressure switch 8, drain valve 1 links to each other with filtered solution stop valve 6.
Can be filled with the gas of 0.01Mpa in the air bag 9 of the present invention in advance.During normal the operation, filtered solution stop valve 6 is often opened, and drain valve 1 is normally closed, and under 11 effects of charging liquid pump, feed liquid enters film filter 3, and behind membrane filtration, filtered solution is discharged through filtered solution outlet 4, bellow pot 5 and filtered solution stop valve 6.Because flowing through, the filtered solution between film filter 3 and the filtered solution stop valve 6 directly enters water tank near the general water outlet of normal pressure in the passage, so the water yield that retains in the bellow pot 5 is poor for bellow pot 5 volumes and air bag 9 volumes only, the interior pressure of bellow pot 5 is also flowed through with filtered solution and is equated in the passage.According to the requirement of continuous ultra filtration, must carry out the frequent backwash of timing.Backwash process is: when normal operation, close filtered solution stop valve 6, the hydraulic pressure that filtered solution between film filter 3 and the filtered solution stop valve 6 is flowed through in the passage rises, gas in the air bag 9 is compressed, liquid measure increase recruitment is air bag 9 reduction volume in the bellow pot 5, described filtered solution is flowed through, and can to set 0.2Mpa be starting pressure to channel inner pressure, and 0.01Mpa is a closing presure; Flow through in-channel water when being pressed onto 0.2Mpa when filtered solution, and gas pressure also be 0.2Mpa in the air bag, and air bag should be compressed to originally 1/20 in theory, and the volume of air bag compression back minimizing is filled by filtered solution.Pressure switch 8 actions this moment, cyclelog 7 is opened drain valve 1, because pressure release suddenly, the feed liquid lateral pressure is reduced to normal pressure rapidly, because of resistance greatly reduces, feed liquid proposes from floss hole 2 and drain valve 1 with big flow, along with the expansion of air bag, gas pressure in the newspaper capsule is also reduced to normal pressure or minute-pressure rapidly, pressure switch 8 is moved once more, and cyclelog is opened filtered solution stop valve 6, closes drain valve 1, backwash procedure finishes, and device enters the normal filtration duty.
Different with example 1 is that this its air bag of routine film filter is not located in the bellow pot, but is located at and filtered solution outlet 4 film filters that link to each other 3 end inner chambers.Other structure identical with last example, its backwash principle be identical with last example also.
This routine film filter as shown in Figure 2, is connected with water pocket 12 on the filtered solution between filtered solution outlet 4 and the filtered solution stop valve 6 is flowed through passage, water pocket 12 outer sealing are provided with water pocket tube 13.Other structure is identical with example 1.Its backwash principle is similar to example 1: when closing filtered solution stop valve 6, water pocket 12 dilates, and its internal-filling liquid increases, and the gas in the compression water pocket tube 13 increases the described filtered solution channel inner pressure of flowing through, and filling amount increases; The filtered solution of elevated pressures and under the 13 internal pressure effects of water pocket tube is realized backwash.
Claims (6)
1, film filter, has film filter (3), the one end is provided with filtered solution outlet (4), its other end is provided with floss hole (2), the one side is provided with liquor inlet (10), liquor inlet (10) connect liquid-transport pipe-line and be provided with charging liquid pump (11), filtered solution outlet (4) connect liquid-transport pipe-line and be provided with filtered solution stop valve (6), floss hole (2) connect liquid-transport pipe-line and be provided with drain valve (1), it is characterized in that being provided with water-gas on the filtered solution between film filter (3) and the filtered solution stop valve (6) is flowed through passage presses coexisting body mutually, be provided with cyclelog (7) and charging liquid pump (11), drain valve (1) links to each other with filtered solution stop valve (6).
2, film filter as claimed in claim 1 is characterized in that described water-gas presses coexisting body to be meant mutually: the bellow pot (5) that connected on the passage set air bag (9) in it of flowing through of the filtered solution between filtered solution outlet (4) and filtered solution stop valve (6).
3, film filter as claimed in claim 1 is characterized in that described water-gas presses coexisting body to be meant mutually: film filter (3) the end inner chamber and the interior set air bag thereof that link to each other with filtered solution outlet (4).
4, film filter as claimed in claim 1 is characterized in that described water-gas presses coexisting body to be meant mutually: its periphery water pocket tube (13) of establishing that seals of water pocket (12) that is connected on the filtered solution between filtered solution outlet (4) and the filtered solution stop valve (6) is flowed through passage and worker.
5, as claim 1,2,3 or 4 described film filters, it is characterized in that being provided with pressure switch (8) and the filtered solution between film filter (3) and the filtered solution stop valve (6) passage of flowing through and link to each other, described cyclelog (7) links to each other with pressure switch (8).
6, film filter as claimed in claim 5 is characterized in that described drain valve (1) and filtered solution stop valve (6) are electronic keying valve or pneumatic keying valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03106917 CN1234446C (en) | 2003-02-27 | 2003-02-27 | Film filtering equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03106917 CN1234446C (en) | 2003-02-27 | 2003-02-27 | Film filtering equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1524606A true CN1524606A (en) | 2004-09-01 |
| CN1234446C CN1234446C (en) | 2006-01-04 |
Family
ID=34282832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03106917 Expired - Fee Related CN1234446C (en) | 2003-02-27 | 2003-02-27 | Film filtering equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1234446C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019145B (en) * | 2009-09-15 | 2013-03-13 | 内蒙古工业大学 | Method for improving membrane flux and membrane assembly thereof |
| CN104235586A (en) * | 2013-06-18 | 2014-12-24 | 宝山钢铁股份有限公司 | Box-type filter with pressure-controllable sealing device |
-
2003
- 2003-02-27 CN CN 03106917 patent/CN1234446C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019145B (en) * | 2009-09-15 | 2013-03-13 | 内蒙古工业大学 | Method for improving membrane flux and membrane assembly thereof |
| CN104235586A (en) * | 2013-06-18 | 2014-12-24 | 宝山钢铁股份有限公司 | Box-type filter with pressure-controllable sealing device |
| CN104235586B (en) * | 2013-06-18 | 2016-12-07 | 宝山钢铁股份有限公司 | There is the box filter of the sealing device of pressure controllable |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1234446C (en) | 2006-01-04 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HANGZHOU WATER TREATMENT TECHNOLOGY RESEARCH AND D Free format text: FORMER NAME OR ADDRESS: HANGZHOU WATER TREATMENT TECHNOLOGICAL RESEARCH DEVELOPMENT CENTER Owner name: HANGZHOU WATER TREATMENT TECHNOLOGICAL RESEARCH DE Free format text: FORMER NAME OR ADDRESS: STATE OCEANIC ADMINISTRATION, HANGZHOU WATER TREATMENT TECHNOLOGY RESEARCH AND DEVELOPMENT CENTER |
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| CP03 | Change of name, title or address |
Address after: The city of Hangzhou in West No. 50 zip code: 310012 Patentee after: HANGZHOU WATER TREATMENT TECHNOLOGY DEVELOPMENT CENTER Co.,Ltd. Address before: No. 50 Wenhua Road, Zhejiang, Hangzhou Province, China: 310012 Patentee before: Hangzhou Water Treating Technology Research Development Center Address after: No. 50 Wenhua Road, Zhejiang, Hangzhou Province, China: 310012 Patentee after: Hangzhou Water Treating Technology Research Development Center Address before: No. 50 Wenhua Road, Zhejiang, Hangzhou Province, China: 310012 Patentee before: Hangzhou water treatment technology research and development center of State Oceanic Administration |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060104 Termination date: 20130227 |