CN105903355A - Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system - Google Patents
Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system Download PDFInfo
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- CN105903355A CN105903355A CN201610397004.7A CN201610397004A CN105903355A CN 105903355 A CN105903355 A CN 105903355A CN 201610397004 A CN201610397004 A CN 201610397004A CN 105903355 A CN105903355 A CN 105903355A
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- membrane
- reverse osmosis
- water
- osmosis membrane
- nano filter
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- 239000012528 membrane Substances 0.000 title claims abstract description 92
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 72
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000011780 sodium chloride Substances 0.000 claims abstract description 10
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 7
- 231100000719 pollutant Toxicity 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 239000012267 brine Substances 0.000 claims description 21
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 21
- 230000002265 prevention Effects 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- 238000001728 nano-filtration Methods 0.000 claims description 13
- 230000003204 osmotic effect Effects 0.000 claims description 5
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 2
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 claims description 2
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 239000012266 salt solution Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 abstract description 5
- 230000003111 delayed effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 239000013049 sediment Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 15
- 238000005374 membrane filtration Methods 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000009292 forward osmosis Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- DNHVXYDGZKWYNU-UHFFFAOYSA-N lead;hydrate Chemical compound O.[Pb] DNHVXYDGZKWYNU-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
-
- 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
- B01D2321/06—Use of osmotic pressure, e.g. direct osmosis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a method for preventing and treating pollution by completing a membrane system on a reverse osmosis membrane device or a nano filter membrane device which operates normally. A produced water storage tank of a certain volume is added to a produced water pipe of the reverse osmosis membrane device or the nano filter membrane device which is designed conventionally. A high-concentration saline water inlet tank of a certain volume and a liquid inlet are added to a water inlet pipe. When a reverse osmosis membrane element or a nano filter membrane element is subjected to membrane pollution, under the condition that operation of a booster pump and a high pressure pump is not stopped, high-concentration saline water is injected into a water inlet pipe of the membrane system. In 'forward-direction osmosis flow' within a certain time, the water osmosis direction on the surface of a membrane is opposite to the water osmosis direction of normal filtration. Pollutants and sediment on the surface of the membrane can go away from the surface of the membrane, enter the concentrated water and are further taken by concentrated water flow on the surface of the membrane out of the membrane system. In this way, filtering performance of the reverse osmosis membrane or the nano filter membrane can be restored. By means of the method, the pollution trend of the reverse osmosis membrane or the nano filter membrane system is delayed, the service life of the membrane is prolonged, and water-producing capacity of the membrane system is improved.
Description
Technical field
The invention belongs to application field of water treatment, relate to the prevention and cure of pollution method of reverse osmosis membrane or NF membrane, especially one
Plant without the membranous system prevention and cure of pollution method stopping properly functioning reverse osmosis membrane apparatus or nano filter membrance device.
Background technology
Reverse osmosis membrane system or nanofiltration membrane system are a kind of wide variety of feed separation, solution purification method.Especially
In desalinization, brackish water desalination, bitter softening, surface water treatment, Industrial Wastewater Treatment, urban sewage recycling
The fields such as process, industrial pure water process, industrial material concentration are widely used.Typically, this system selects rolled structure
Membrane component, uses single hop, multistage or the configuration of multistage system in design.In order to ensure the properly functioning of system, typically
Coagulant precipitation, more medium filter, active carbon filter, ultrafiltration, cartridge filter, disinfection system etc. can be selected to enter
Row pretreatment, its technique core is to prevent reverse osmosis membrane or NF membrane from serious fouling membrane occur.Even if but on using
State technique or equipment, reverse osmosis membrane system or the nanofiltration membrane system highly enriched characteristic because of itself, still can be by water body
In the pollution of pollutant.Therefore, in the actual application of reverse osmosis membrane or nanofiltration membrane system, prevention and cure of pollution remain it
Among in Chong.
Typically, in reverse osmosis membrane system designs, all can be equipped with off-line chemically-cleaning device.Off-line Chemical cleaning is grasped
After being all employing system shutdown, being equipped with different Chemical cleaning medicaments, circulate in membranous system, immersion etc. completes.
But still can not meet the service requirement of membranous system.Such as, Chinese Patent Application No. 201110394579.0 discloses
A kind of method of reverse osmosis membrane prevention and cure of pollution.When reverse osmosis membrane system aquifer yield is less than 10% or reverse osmosis of initial aquifer yield
When the pressure reduction of permeable membrane assembly is more than 0.35MPa, manual or automatic control, by forward flushing membrane surface, back flush
Film surface, forward Chemical cleaning film surface, reverse Chemical cleaning film surface, forward purge of gas film surface or reverse gas
Body cleans one or more combinations in film surface, is rinsed reverse osmosis membrane, cleans, makes reverse osmosis membrane system produce
The water yield is recovered to more than the 99% of initial aquifer yield, and pressure reduction is less than 0.25MPa；Chinese Patent Application No.
201310289802.4 disclose a kind of cleaning method preventing and treating reverse osmosis membrane or nanofiltration membrane pollution, and advanced circulation of qi promoting water is biphase
Stream cleans or simultaneously Chemical cleaning, then extracts after reverse osmosis concentrated water rinses reverse osmosis membrane surface, and reverse osmosis concentrated water is through dense water
Drain valve is discharged；Then pretreated water is delivered to reverse osmosis module, the dense water of cleaning of reverse osmosis concentrated water side is replaced row
Go out, until electrical conductivity returns to the 98% of pretreated water electrical conductivity；Finally close rinse water drain valve, open concentrated water drainage
Putting valve, reverse osmosis module recovers properly functioning；Chinese Patent Application No. 20141070856.2 discloses a kind of reverse osmosis
Film on-line cleaning device, including cleaning water tank and flushing water pump, described cleaning water tank is connected with described flushing water pump；Should
Flushing water pump is connected by the first pipeline pretreatment section；Described first pipeline is provided with stop valve；Described pre-place
Reason section connects cartridge filter；Described cartridge filter connects reverse osmosis membrane by high-pressure pump；This reverse osmosis membrane passes through
Concentrate recirculation pipeline is connected with described pure water tank, and described second pipe is provided with product water reflux line, and this product water refluxes
Pipeline is connected with described cleaning water tank.
But, presently disclosed reverse osmosis membrane or nanofiltration membrane system prevention and cure of pollution method are all confined to stop at membranous system grasp
Cleaning method when making.Generally, membranous system is run and maintenance still suffers from a lot of inconvenience.
Therefore, those skilled in the art is devoted to develop a kind of reverse osmosis membrane or nanofiltration membrane system prevention and cure of pollution method,
Properly functioning without halt system, delay the pollution tendencies of reverse osmosis membrane system or nanofiltration membrane system, extend the longevity of film
Life, improves the water-yielding capacity of membranous system
Summary of the invention
Because the drawbacks described above of prior art, the technical problem to be solved is how at reverse osmosis membrane or receive
The prevention and cure of pollution of reverse osmosis membrane or nanofiltration membrane system are completed in the case of filter membrane system is the most out of service.
For achieving the above object, the membranous system that the invention provides a kind of reverse osmosis membrane apparatus or nano filter membrance device pollutes anti-
Control method, comprise the following steps:
Step 1, when there is fouling membrane in reverse-osmosis membrane element or NF membrane element, do not stop at booster pump and high-pressure pump
Under conditions of operation, high strong brine is injected membranous system inlet pipeline；
Step 2, when the pressure condition that the osmotic pressure condition of described high strong brine can provide higher than high-pressure pump, water
Molecule will be from low concentration solution automatic stream highly concentrated solution；
Step 3, the pollutant on film surface and deposit can leave film surface and enter in dense water；
The concentrated stream on step 4, pollutant and deposit tunicle surface takes membranous system out of.
Further, described reverse osmosis membrane system or nanofiltration membrane system use wound membrane element structure.
Further, described high strong brine is high concentration inorganic salt solution or organic slat solution.
Further, described high strong brine is sodium chloride solution, Klorvess Liquid, metabisulfite solution, potassium sulfate solution
In one.
The present invention provides a kind of can complete reverse osmosis membrane or nanofiltration membrane system under the precondition not carrying out shut-down operation
Prevention and cure of pollution method, delay the pollution tendencies of reverse osmosis membrane system or nanofiltration membrane system, extend the life-span of film, carry
The water-yielding capacity of high membranous system
In order to achieve the above object, the technical solution of the present invention is:
The reverse osmosis membrane apparatus of conventional design or the water producing pipe road of nano filter membrance device install additional the product water storage of a constant volume
Groove, produces water storage tank and can use manual or automatic water inlet.Produce water storage tank water inlet to keep being connected with film device water production pipeline
Unimpeded.The reverse osmosis membrane apparatus of conventional design or the inlet pipeline of nano filter membrance device install additional the highly concentrated salt of a constant volume
Water lead channel, the outlet of high strong brine lead channel is provided with connection pipeline and cut-offs valve.Connect the pipeline other end to fill with film
Putting inlet channel keeps connection unimpeded.Consider membranous system configured in one piece, especially booster pump and high-pressure pump waterpower to raise
Journey value, selects suitable high strong brine, it is ensured that high strong brine has sufficiently high osmotic pressure.
When needs carry out pollution prevention to membranous system, high strong brine is cut-off valve and opens, keep original product water to send outside
Pipeline is closed.So, the high strong brine of one pulse feature is pumped into filter membrane under the effect of booster pump and high-pressure pump
In system, owing to high strong brine has sufficiently high osmotic pressure, even if booster pump and high-pressure pump are running well, salt
Water also will not occur " reverse osmosis " phenomenon, now happens is that " naturally osmotic " phenomenon, i.e. produces the peace and quiet water of water side
Enter through film surface penetration in the high strong brine of dense water side.Meanwhile, film surface deposition or because of charge effect
It is dense that some materials attracted enter high strong brine as well as the entrance of high strong brine and the formation of " forward osmosis stream "
Water side.Along with current are in the flowing of face, these pollutant the most finally discharge filtration membrane systems, enter the dense water of membranous system
In.
The highest strong brine cut-offs valve closing, and the feed liquor concentration of filtration membrane systems can drastically decline.When solution concentration shows
When writing less than booster pump and high-pressure pump discharge pressure, the hydrone in the feed liquor of new low concentration will be under pressure
There is " reverse osmosis " phenomenon, through film surface, enter and produce water side, formed and produce water normally.
Prevention and cure of pollution method involved in the present invention can be used flexibly, both can be when fouling membrane degree was serious, such as,
When film aquifer yield decline 15% or film operating pressure improve 15%, use before and after traditional chemical cleaning process.Also
Can be as active membranous system maintenance service, as every day once cleans, or when membranous system is decayed a definite proportion
Carry out during example, as film produce discharge decline 2～3% or film operating pressure promote 2～3% time use.
Below with reference to accompanying drawing, the technique effect of design, concrete structure and the generation of the present invention is described further, with
It is fully understood from the purpose of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the system schematic of general reverse osmosis membrane or nano filter membrance device；Including: membranous system water inlet storage tank 1, increasing
Press pump 2, security personnel's filter 3, high-pressure pump 4, membrane component 5, membranous system produce tank 6, the dense tank of membranous system 7；
Fig. 2 is reverse osmosis membrane or the system schematic of nano filter membrance device of the present invention；Including: membranous system water inlet storage tank 1,
Booster pump 2, security personnel's filter 3, high-pressure pump 4, membrane component 5, membranous system produce tank 6, the dense tank of membranous system 7；Highly concentrated
Saline slot 8, high strong brine stop valve 9, product water transfer tank 10；
Fig. 3 is the system schematic of the embodiment of the present invention；Including: membranous system water inlet storage tank 1, booster pump 2, security personnel's filter
Device 3, high-pressure pump 4, membrane component 5, membranous system produce tank 6, the dense tank of membranous system 7；Highly concentrated saline slot 8, highly concentrated salt
Water stop valve 9, product water transfer tank 10.
Detailed description of the invention
Below by an embodiment and combine accompanying drawing the present invention will be further described.
As shown in Figure 1, Figure 2 and Figure 3, it is one-level two-part counter-infiltration system 5 that the present embodiment relates to filtration membrane systems,
First paragraph uses 66 core dress film configuration 5-1, and second segment uses 36 core dress film configuration 5-2.Water inlet is provided with into water
Storage tank 1, membranous system water inlet is provided with booster pump 2, security personnel's filter 3 and high-pressure pump 4.High-pressure pump import is provided with high strong brine
Groove 8, the outlet of highly concentrated saline slot 8 is provided with automatic switch valve 9.Counter-infiltration system 5 produces current multiparity water transfer tank 10,
Producing and intake bottom water transfer tank, top water outlet, water outlet gravity flow enters membranous system and produces tank 6.Reverse osmosis concentrated water is from flowing to
Enter the dense tank of membranous system 7.
In normal course of operation, high pressure pump outlet pressure 18.5bar, film initially produce discharge 48 vertical/time.The present invention
The membranous system maintainability Environmental capacity related to is set as carrying out once for every 3 days.Highly concentrated saline slot 8 is configured with the chlorine of 15%
Changing natrium brine, configuration water source uses reverse osmosis produced water.When safeguarding, automatic switch valve 9 is opened in programme-control every time,
Under the suction of booster pump 2, in highly concentrated saline slot 8, saline automatically flows into membranous system.Booster pump 2 and high-pressure pump 3 are in dimension
Normal operating condition is kept during protecting.Automatic switch valve 9 is automatically switched off after opening 10min.3min after valve closing
After, system i.e. enters normal operating condition, and counter-infiltration system normally produces water.
Total system does not carries out the chemical cleaning operation of routine for 4 months in actual motion.
The preferred embodiment of the present invention described in detail above.Should be appreciated that the ordinary skill of this area is without wound
The property made work just can make many modifications and variations according to the design of the present invention.Therefore, all technology in the art
Personnel can be obtained by logical analysis, reasoning, or a limited experiment the most on the basis of existing technology
The technical scheme arrived, all should be in the protection domain being defined in the patent claims.
Claims (4)
1. the membranous system prevention and cure of pollution method of a reverse osmosis membrane apparatus or nano filter membrance device, it is characterised in that include with
Lower step:
Step 1, when there is fouling membrane in reverse-osmosis membrane element or NF membrane element, do not stop at booster pump and high-pressure pump
Under conditions of operation, high strong brine is injected membranous system inlet pipeline；
Step 2, when the pressure condition that the osmotic pressure condition of described high strong brine can provide higher than high-pressure pump, water
Molecule will be from low concentration solution automatic stream highly concentrated solution；
Step 3, the pollutant on film surface and deposit can leave film surface and enter in dense water；
The concentrated stream on step 4, pollutant and deposit tunicle surface takes membranous system out of.
2. reverse osmosis membrane apparatus as claimed in claim 1 or the membranous system prevention and cure of pollution method of nano filter membrance device, it is special
Levying and be, described reverse osmosis membrane system or nanofiltration membrane system use wound membrane element structure.
3. reverse osmosis membrane apparatus as claimed in claim 1 or the membranous system prevention and cure of pollution method of nano filter membrance device, it is special
Levying and be, described high strong brine is high concentration inorganic salt solution or organic slat solution.
4. reverse osmosis membrane apparatus as claimed in claim 3 or the membranous system prevention and cure of pollution method of nano filter membrance device, it is special
Levying and be, described high strong brine is in sodium chloride solution, Klorvess Liquid, metabisulfite solution, potassium sulfate solution
Kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397004.7A CN105903355A (en) | 2016-06-06 | 2016-06-06 | Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610397004.7A CN105903355A (en) | 2016-06-06 | 2016-06-06 | Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105903355A true CN105903355A (en) | 2016-08-31 |
Family
ID=56750694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610397004.7A Pending CN105903355A (en) | 2016-06-06 | 2016-06-06 | Method for preventing and treating pollution through reverse osmosis membrane or nano filter membrane system |
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| CN (1) | CN105903355A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107198969A (en) * | 2017-07-04 | 2017-09-26 | 山东科技大学 | A kind of waste and old composite membrane component cleaning restorative procedure and its device |
| CN107321186B (en) * | 2017-08-16 | 2018-04-13 | 北京北控海创科技有限公司 | A kind of nanofiltration, the online reverse cleaning method and device of the hyperosmosis of reverse osmosis membrane |
| CN108722195A (en) * | 2018-06-05 | 2018-11-02 | 北京海川新源环保科技有限公司 | A kind of the explosive filling free on-line cleaning method and device of counter-infiltration system |
| CN109078499A (en) * | 2018-09-07 | 2018-12-25 | 江苏沁尔康环境电器有限公司 | A method of with rolled membrane module strainability can be restored on household water-purifying machine |
| CN110975633A (en) * | 2019-12-23 | 2020-04-10 | 中国科学院青岛生物能源与过程研究所 | Osmotic membrane cleaning system based on osmotic pressure difference |
| CN113149132A (en) * | 2021-03-25 | 2021-07-23 | 东北农业大学 | High-pressure reverse osmosis membrane filtration system capable of backwashing |
| CN113247991A (en) * | 2021-05-25 | 2021-08-13 | 追创科技(苏州)有限公司 | Reverse osmosis filter core and water purifier |
| CN113526530A (en) * | 2021-08-10 | 2021-10-22 | 上海言征分离技术有限公司 | Preparation system and method of large-particle anhydrous sodium sulphate byproduct of nitrate-containing brine |
| CN115228298A (en) * | 2022-07-19 | 2022-10-25 | 金科环境股份有限公司 | Rolled membrane system and gas-liquid two-phase cleaning method thereof |
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| CN202161922U (en) * | 2011-07-13 | 2012-03-14 | 浙江开创环保科技有限公司 | Reverse osmosis device with automatic quickly-flushing function |
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| CN204737759U (en) * | 2015-05-20 | 2015-11-04 | 北京华夏壹泰科技有限公司 | High strong brine crowning is salt polarity diverging device at a low price |
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| CN202161922U (en) * | 2011-07-13 | 2012-03-14 | 浙江开创环保科技有限公司 | Reverse osmosis device with automatic quickly-flushing function |
| CN103502158A (en) * | 2012-04-23 | 2014-01-08 | 水技术国际公司 | Low energy reverse osmosis process |
| CN204737759U (en) * | 2015-05-20 | 2015-11-04 | 北京华夏壹泰科技有限公司 | High strong brine crowning is salt polarity diverging device at a low price |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107198969A (en) * | 2017-07-04 | 2017-09-26 | 山东科技大学 | A kind of waste and old composite membrane component cleaning restorative procedure and its device |
| CN107321186B (en) * | 2017-08-16 | 2018-04-13 | 北京北控海创科技有限公司 | A kind of nanofiltration, the online reverse cleaning method and device of the hyperosmosis of reverse osmosis membrane |
| CN108722195A (en) * | 2018-06-05 | 2018-11-02 | 北京海川新源环保科技有限公司 | A kind of the explosive filling free on-line cleaning method and device of counter-infiltration system |
| CN109078499A (en) * | 2018-09-07 | 2018-12-25 | 江苏沁尔康环境电器有限公司 | A method of with rolled membrane module strainability can be restored on household water-purifying machine |
| CN110975633A (en) * | 2019-12-23 | 2020-04-10 | 中国科学院青岛生物能源与过程研究所 | Osmotic membrane cleaning system based on osmotic pressure difference |
| CN110975633B (en) * | 2019-12-23 | 2022-12-30 | 中国科学院青岛生物能源与过程研究所 | Osmotic membrane cleaning system based on osmotic pressure difference |
| CN113149132A (en) * | 2021-03-25 | 2021-07-23 | 东北农业大学 | High-pressure reverse osmosis membrane filtration system capable of backwashing |
| CN113247991A (en) * | 2021-05-25 | 2021-08-13 | 追创科技(苏州)有限公司 | Reverse osmosis filter core and water purifier |
| CN113526530A (en) * | 2021-08-10 | 2021-10-22 | 上海言征分离技术有限公司 | Preparation system and method of large-particle anhydrous sodium sulphate byproduct of nitrate-containing brine |
| CN115228298A (en) * | 2022-07-19 | 2022-10-25 | 金科环境股份有限公司 | Rolled membrane system and gas-liquid two-phase cleaning method thereof |
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