CN103394287A - Spiral wound type reverse osmosis membrane and method for cleaning same - Google Patents
Spiral wound type reverse osmosis membrane and method for cleaning same Download PDFInfo
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- CN103394287A CN103394287A CN2013103722908A CN201310372290A CN103394287A CN 103394287 A CN103394287 A CN 103394287A CN 2013103722908 A CN2013103722908 A CN 2013103722908A CN 201310372290 A CN201310372290 A CN 201310372290A CN 103394287 A CN103394287 A CN 103394287A
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Abstract
The invention provides a spiral wound type reverse osmosis membrane which comprises a center water collection pipe, water feeding flow guide cloth, water production flow guide cloth and a plurality of membrane components, wherein the membrane components comprise a pair of separation membranes; the water production flow guide cloth is positioned between the separation membranes to form a water production runner; three sides of each membrane component are sealed, and the fourth side of each membrane component can be opened to enable permeated water to leave; the water feeding flow guide cloth is arranged on one membrane of the membrane components to form a water feeding runner; the plurality of membrane components are wound around the center water collection pipe; the center water collection pipe comprises a penetration hole for collecting the permeated water from the membrane components; raw water enters the water feeding runner from one end of the water feeding runner; part of the raw water is filtered by the separation membranes to produce pure water; the pure water enters the center water collection pipe along the water production flow guide cloth; the residual non-filtered concentrated water flows out of the other end of the water feeding runner along the water feeding flow guide cloth. The spiral wound type reverse osmosis membrane also comprises an axial water feeding pipe provided with a plurality of small holes; the closer the small holes are to a condensed water outlet, the larger the diameters of the small holes are.
Description
Technical field
The water purifier that the present invention relates to a kind of spiral wound reverse osmosis membrane and use this element.
Background technology
The spiral wound reverse osmosis membrane is the common component in water technology, and it generally has a columniform pressure vessel as housing, and its inside has one with the central tube in a plurality of holes and twists in alternately laminated multilayer reverse osmosis membrane and selvage guide on central tube.Central tube is connected by connector with the housing two ends.
At present, known spiral wound reverse osmosis membrane comprises the center collector pipe, water inlet flow-guiding cloth and product water flow-guiding cloth and a plurality of membrane module, wherein, membrane module comprises the pair of separated diaphragm, produce the water flow-guiding cloth and form the product water flow passage between Separation membrane, membrane module seals in three sides, stays the 4th side and opens so that infiltration water leaves; The water inlet flow-guiding cloth is added on a diaphragm of membrane module, has formed water inlet flow channel; A plurality of membrane modules be wound on the center collector pipe around; The center collector pipe comprises perforation, and the infiltration water from a plurality of membrane modules is collected in perforation; Former water enters from an end of water inlet flow channel, and a part is filtered the formation pure water through Separation membrane and entered the center collector pipe along producing the water flow-guiding cloth, and the other end of remaining unfiltered dense water along the water inlet flow-guiding cloth from water inlet flow channel flows out.The rolling ro components of this structure, it is from the inflow water inlet flow channel of an end face of element, part water filters the formation pure water through the counter-infiltration diaphragm and flows in the collector pipe of center along the pure water flow-guiding screen, and the remaining dense water that forms that filters flows out from the other end of element along the water inlet flow-guiding screen in water inlet flow channel.Be penetrated into the back side formation pure water of counter-infiltration diaphragm due to the part of water inlet, the flow of water inlet can be more and more less, generally the flow of final dense water from dense water end (W.E.) discharge is 50% to 80% of former water flow of inlet water, because former water water inlet is reducing gradually along flow on the runner direction, thereby also cause flow velocity to reduce, because the reduction of flow velocity makes the water velocity of reverse-osmosis membrane element water inlet end and dense water end (W.E.) difference occur, directly cause the concentration polarization phenomenon, thereby cause membrane component to pollute, make salt rejection rate and aquifer yield reduce, the membrane component lost of life.
The invention provides a kind of spiral wound reverse osmosis membrane, can reduce above-mentioned concentration polarization phenomenon.
Summary of the invention
According to an aspect of the present invention, comprise: the center collector pipe, water inlet flow-guiding cloth and product water flow-guiding cloth and a plurality of membrane module, wherein, described membrane module comprises the pair of separated diaphragm, produce the water flow-guiding cloth and form the product water flow passage between Separation membrane, membrane module seals in three sides, stays the 4th side and opens so that infiltration water leaves; The water inlet flow-guiding cloth is added on a diaphragm of membrane module, has formed water inlet flow channel; A plurality of membrane modules be wound on the center collector pipe around; The center collector pipe comprises perforation, and the infiltration water from a plurality of membrane modules is collected in perforation; Former water enters from an end of water inlet flow channel, a part is filtered the formation pure water through Separation membrane and is entered the center collector pipe along producing the water flow-guiding cloth, the other end of remaining unfiltered dense water along the water inlet flow-guiding cloth from water inlet flow channel flows out, it is characterized in that: also comprise axial water inlet pipe, described axial water inlet pipe has a plurality of apertures, and the dense water delivery port of the diametral distance of described a plurality of apertures is larger when nearer.In this technical scheme, an end except water inlet flow channel, also use axial water inlet pipe water inlet, due to the hole diameter of axial water inlet pipe along with dense water delivery port changes, make from the distance of dense water delivery port more close to the time, the water inlet of water inlet pipe is more, has reduced the concentration of dense water, and has reduced the impact of concentration polarization.
According to another aspect of the present invention, described axial water inlet pipe has a plurality of, evenly is arranged at water inlet flow channel.By such setting, can so that the water outlet of the water inlet pipe arc that infiltration causes when the circular arc direction flows to the concentration polarization problem.
As improvement, for better solve along arc to the concentration imbalance problem, can be two rows that are oppositely arranged with the aperture of described axial water inlet pipe, and comprise mobile device, time set and control device, described mobile device is used for along arc to mobile described axial water inlet pipe, described control device control described mobile device in specific period at arc to the described axial water inlet pipe of loopy moving.Due to described axial water inlet pipe at arc to loopy moving, avoided like this specific region concentration to continue too high problem.
According to another aspect of the present invention, also comprise that described film flushing channel comprises the cleaning fluid liquid outlet channel for using cleaning agents of membrane to clean the film flushing channel of reverse osmosis membrane, wherein the cleaning fluid liquid outlet channel is positioned at the center collector pipe.Described center collector pipe comprises outer tube, inner tube and the spacing body between inner and outer pipes, described inner tube forms the pure water exhalant canal, space between described inner and outer pipes forms the cleaning fluid liquid outlet channel, and during water processed, described pure water exhalant canal is opened, and described cleaning fluid liquid outlet channel is closed; And while cleaning, described cleaning fluid liquid outlet channel is opened, and described pure water exhalant canal is closed.
In a upper scheme, the step of cleaning reverse osmosis membrane comprises: close described axial water inlet pipe; Close the pure water exhalant canal of described center collector pipe, open the cleaning fluid liquid outlet channel of described center collector pipe; Flow into the film cleaning fluid from water inlet flow channel; The part of described film cleaning fluid flows out from the other end of water inlet flow channel, and the flow through rinse liquid outlet of reverse osmosis membrane Hou Cong center collector pipe of another part flows out; After using the film cleaning fluid to clean, flow into former water from water inlet flow channel and wash away cleaning fluid; The cleaning fluid liquid outlet channel of closing center's collector pipe, open the pure water exhalant canal of center collector pipe.Wherein, described cleaning agents of membrane comprises NaOH, lauryl sodium sulfate, neopelex, sodium phosphate trimer and sodium metasilicate.
According to another aspect of the present invention, provide a kind of water purifier, it comprises above-mentioned spiral wound reverse osmosis membrane.
Description of drawings
Fig. 1 is the schematic diagram of one embodiment of the present of invention.
Fig. 2 is the schematic diagram of axial water inlet pipe in Fig. 1.
Fig. 3 is the schematic diagram of axial water inlet pipe of an embodiment of this area.
Fig. 4 is the schematic diagram of the center collector pipe of one embodiment of the present of invention.
The specific embodiment
Following embodiment of the present invention, open at this together with their advantage and feature, will become obvious by reference to following explanation and accompanying drawing.And, should be appreciated that the not mutual exclusion of feature of various embodiment described here, and can exist in various combinations and transformation process.
As shown in Figure 1, spiral wound reverse osmosis membrane of the present invention is included in spiral wound reverse osmosis filter device 10, separates two flat diaphragms 12 with producing water flow-guiding cloth 14, to form membrane module 16.Membrane module 16 seals in three sides, stays the 4th side and opens so that infiltration water leaves.Water inlet flow-guiding cloth 18 is added on one of them of diaphragm 12 of membrane module, and it has preferably formed at least one permeate channel.A plurality of membrane modules 16 be wound on center collector pipe 20 around.Center collector pipe 20 comprises perforation 22, the infiltration water that perforation 22 is collected from a plurality of membrane modules 16.Improvements are: also comprise axial water inlet pipe 23, described axial water inlet pipe 23 has a plurality of apertures 231, and the dense water delivery port of the diametral distance of described a plurality of apertures 231 is larger (referring to Fig. 2) when nearer.By such improvement, water inlet flows into from an end of water inlet flow channel, the aperture 231 of simultaneously axial water inlet pipe 23 is to arc to water spray, due to aperture 231 when nearer apart from water inlet flow channel outlet 24 its diameter larger, make from the distance of water inlet flow channel outlet 24 more close to the time, the water inlet of water inlet pipe 23 more (referring to the arrow length in Fig. 2), reduced the concentration of dense water, and reduced the impact of concentration polarization.
Arranging after axial water inlet pipe, for better solve along arc to the concentration imbalance problem, referring to accompanying drawing 3, can be with two rows of the aperture of water inlet pipe 23 231 for being oppositely arranged.And can comprise mobile device, time set and control device, described mobile device is used for along arc to mobile described axial water inlet pipe 23, described control device control described mobile device in specific period at arc to the described axial water inlet pipe 23 of loopy moving in scope.Above-mentioned mobile device, time set and control device can use mechanical mobile device and the chip microcontroller of this area routine.Due to water inlet pipe 23 at arc to loopy moving in scope, avoided like this specific region concentration to continue too high problem.
According to another aspect of the present invention, above-mentioned axial water inlet pipe 23 can seal, the spiral wound reverse osmosis membrane can also comprise the film flushing channel, is used for using cleaning agents of membrane to clean reverse osmosis membrane, and described film flushing channel comprises cleaning fluid feed pathway and cleaning fluid liquid outlet channel.The cleaning fluid feed pathway can be provided by the pipeline that is independent of water inlet pipe, and the cleaning fluid liquid outlet channel is positioned at the center collector pipe, and described center collector pipe comprises for pure water passage and cleaning fluid liquid outlet channel; Wherein the cleaning fluid liquid outlet channel seals when pure water processed, and the pure water passage seals when cleaning.Like this, when using the film flushing channel to clean reverse osmosis membrane, pure water passage that can closing center's collector pipe, avoid the film cleaning fluid to affect other parts of water purifier.Referring to accompanying drawing 4, this programme Zhong， center collector pipe 20 comprises inner tube 101, and outer tube 102, and the spacing body between inner and outer pipes 103 form pure water path 10 11 in inner tube, form cleaning fluid liquid outlet channel 1021 between inner and outer pipes; Outer tube has outer tube inlet 104, and outer tube inlet 104 is used for the inflow of cleaning fluid and pure water; Inner tube has inner tube inlet 105, and inner tube inlet 105 is used for the inflow of pure water, and it can seal; Spacing body 103 between inner and outer pipes has rinse liquid outlet 106, is used for the outflow of cleaning fluid, and it also can seal.Clean reverse osmosis membrane in this programme and comprise the steps: to close described axial water inlet pipe 23; Close the pure water exhalant canal 1011 of described center collector pipe 20, open the cleaning fluid liquid outlet channel 1021 of described center collector pipe; Flow into the film cleaning fluid from water inlet flow channel; The part of described film cleaning fluid flows out from the outlet 24 of water inlet flow channel, and the flow through cleaning fluid liquid outlet channel 1021 of reverse osmosis membrane Hou Cong center collector pipe 20 of another part flows out; After using the film cleaning fluid to clean, flow into former water from water inlet flow channel and wash away cleaning fluid; The cleaning fluid liquid outlet channel 1021 of closing center's collector pipe, open the pure water exhalant canal 1011 of center collector pipe.Wherein, described cleaning agents of membrane comprises NaOH, lauryl sodium sulfate, neopelex, sodium phosphate trimer and sodium metasilicate.
In addition, those skilled in the art also can do other variation in spirit of the present invention, as long as it does not depart from technique effect of the present invention and all can.The variation that these are done according to spirit of the present invention, within all should being included in the present invention's scope required for protection.
Claims (10)
1. spiral wound reverse osmosis membrane, comprise: the center collector pipe, water inlet flow-guiding cloth and product water flow-guiding cloth and a plurality of membrane module, wherein, described membrane module comprises the pair of separated diaphragm, produce the water flow-guiding cloth and form the product water flow passage between Separation membrane, membrane module seals in three sides, stays the 4th side and opens so that infiltration water leaves; The water inlet flow-guiding cloth is added on a diaphragm of membrane module, has formed water inlet flow channel; A plurality of membrane modules be wound on the center collector pipe around; The center collector pipe comprises perforation, and the infiltration water from a plurality of membrane modules is collected in perforation; Former water enters from an end of water inlet flow channel, a part is filtered the formation pure water through Separation membrane and is entered the center collector pipe along producing the water flow-guiding cloth, the dense water delivery port of remaining unfiltered dense water along the water inlet flow-guiding cloth from water inlet flow channel flows out, it is characterized in that: also comprise axial water inlet pipe, described axial water inlet pipe has a plurality of apertures, and the dense water delivery port of the diametral distance of described a plurality of apertures is larger when nearer.
2. spiral wound reverse osmosis membrane according to claim 1, it is characterized in that: described axial water inlet pipe has a plurality of, evenly is arranged at water inlet flow channel.
3. spiral wound reverse osmosis membrane according to claim 1, it is characterized in that: a plurality of apertures of described axial water inlet pipe are two rows that are oppositely arranged, this two rows aperture can be closed respectively or open.
4. spiral wound reverse osmosis membrane according to claim 3, is characterized in that: also comprise described cleaning fluid liquid outlet channel.
5. according to claim 1-4 described spiral wound reverse osmosis membranes, is characterized in that described cleaning fluid liquid outlet channel is positioned at the center collector pipe.
6. according to claim 1-5 described spiral wound reverse osmosis membranes, it is characterized in that: described center collector pipe comprises outer tube, inner tube and the spacing body between inner and outer pipes, described inner tube forms the pure water exhalant canal, space between described inner and outer pipes forms the cleaning fluid liquid outlet channel, during water processed, described pure water exhalant canal is opened, and described cleaning fluid liquid outlet channel is closed; And while cleaning, described cleaning fluid liquid outlet channel is opened, and described pure water exhalant canal is closed.
7. a method of cleaning spiral wound reverse osmosis membrane claimed in claim 6, comprise the steps: to close described axial water inlet pipe; Close the pure water exhalant canal of described center collector pipe; Open the cleaning fluid liquid outlet channel of described center collector pipe; Flow into the film cleaning fluid from water inlet flow channel; The part of described film cleaning fluid flows out from the other end of water inlet flow channel, and the flow through rinse liquid outlet of reverse osmosis membrane Hou Cong center collector pipe of another part flows out; After using the film cleaning fluid to clean, flow into former water from water inlet flow channel and wash away cleaning fluid; The cleaning fluid liquid outlet channel of closing center's collector pipe, open the pure water exhalant canal of center collector pipe.
8. method according to claim 7, it is characterized in that: described film cleaning fluid comprises NaOH, lauryl sodium sulfate, neopelex, sodium phosphate trimer and sodium metasilicate.
9. water purifier, it comprises according to claim 1-8 described spiral wound reverse osmosis membranes.
10. a spiral wound reverse osmosis membrane, comprising: center collector pipe, water inlet flow-guiding cloth and product water flow-guiding cloth and a plurality of membrane module.
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| CN201310372290.8A CN103394287B (en) | 2013-08-24 | 2013-08-24 | Spiral wound type reverse osmosis membrane and method for cleaning same, and water purifier using spiral wound type reverse osmosis membrane |
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| CN201310372290.8A CN103394287B (en) | 2013-08-24 | 2013-08-24 | Spiral wound type reverse osmosis membrane and method for cleaning same, and water purifier using spiral wound type reverse osmosis membrane |
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| CN103394287B CN103394287B (en) | 2015-02-18 |
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| CN104492268A (en) * | 2014-12-16 | 2015-04-08 | 珠海格力电器股份有限公司 | Winding type reverse-osmosis element and preparation method thereof |
| CN105268319A (en) * | 2015-12-01 | 2016-01-27 | 深圳加仑膜技术有限公司 | External spiral multipage reverse osmosis membrane |
| CN106237861A (en) * | 2016-09-20 | 2016-12-21 | 佛山市美的清湖净水设备有限公司 | Reverse osmosis membrane element, preparation method of reverse osmosis membrane element and filter element |
| CN107930403A (en) * | 2017-09-29 | 2018-04-20 | 浙江沁园水处理科技有限公司 | A kind of wound membrane element |
| CN108751351A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力电器股份有限公司 | Reverse osmosis membrane filter element with new flow passage structure and anti-penetration water purifier |
| US20190284826A1 (en) * | 2018-03-18 | 2019-09-19 | Xiaoyu Gu | Device for swimming pool skimming and filtering |
| CN110508146A (en) * | 2019-09-20 | 2019-11-29 | 珠海格力电器股份有限公司 | Reverse osmosis membrane filter element and water purifier |
| CN117735748A (en) * | 2023-12-01 | 2024-03-22 | 江苏马盛生物科技股份有限公司 | Method for treating phenol-ammonia wastewater in short process |
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| CN117735748A (en) * | 2023-12-01 | 2024-03-22 | 江苏马盛生物科技股份有限公司 | Method for treating phenol-ammonia wastewater in short process |
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Address after: Hangzhou City, Zhejiang province 310011 Gongshu District Dengyun Road No. 518 West Building 2 times constant policy center room 415 Patentee after: Zhejiang friend Environment Technology Co., Ltd. Address before: Hangzhou City, Zhejiang province 310011 Gongshu District Dengyun Road No. 518 West Building 2 times constant policy center room 415 Patentee before: HANGZHOU YOUCHUANG ENVIRONMENTAL ENGINEERING TECHNOLOGY CO., LTD. |