CN108217841A - A kind of reverse osmosis water treatment system method for cleaning - Google Patents
A kind of reverse osmosis water treatment system method for cleaning Download PDFInfo
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- CN108217841A CN108217841A CN201711261574.4A CN201711261574A CN108217841A CN 108217841 A CN108217841 A CN 108217841A CN 201711261574 A CN201711261574 A CN 201711261574A CN 108217841 A CN108217841 A CN 108217841A
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- reverse osmosis
- cleaning
- treatment system
- water treatment
- ultrafiltration
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 105
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 238000004140 cleaning Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 54
- 241000108664 Nitrobacteria Species 0.000 claims abstract description 30
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 239000012670 alkaline solution Substances 0.000 claims abstract description 8
- 150000004972 metal peroxides Chemical class 0.000 claims abstract description 7
- 239000003814 drug Substances 0.000 claims description 9
- 229940079593 drug Drugs 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- XXQBEVHPUKOQEO-UHFFFAOYSA-N potassium superoxide Chemical compound [K+].[K+].[O-][O-] XXQBEVHPUKOQEO-UHFFFAOYSA-N 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 150000002978 peroxides Chemical class 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000001764 infiltration Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 239000012535 impurity Substances 0.000 description 10
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 150000002828 nitro derivatives Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- -1 sodium peroxides Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 235000001674 Agaricus brunnescens Nutrition 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000005708 Sodium hypochlorite Substances 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4698—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electro-osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of reverse osmosis water treatment system method for cleaning, including：1）Waste water in reverse osmosis water treatment system is washed；2）Metal peroxides is added to the water and is configured to heated alkaline solution, the ultrafiltration of reverse osmosis water treatment system and first-stage reverse osmosis film are impregnated in above-mentioned heated alkaline solution, the nitrobacteria being adhered in ultrafiltration and first-stage reverse osmosis film is carried out to impregnate cleaning and air supporting cleaning, ultrafiltration and first-stage reverse osmosis film are taken out after the completion, for use；3）By step 2）In for use ultrafiltration and first-stage reverse osmosis film be placed in progress air quick separating in high-speed air；4）With clear water rinsing step 3）Ultrafiltration and first-stage reverse osmosis film after middle air quick separating, in order to be cleaned to the nitrobacteria separated.The cleaning method of the present invention realizes ultrafiltration, counter-infiltration system cleans the effect that can once meet production requirement in every 23 months.
Description
Technical field
The present invention relates to the field of wastewater of nitro-compound fertilizer device processing, more particularly to a kind of reverse osmosis water treatment system is clear
Reason method.
Background technology
Reverse osmosis technology can be removed effectively since the membrane aperture of reverse osmosis membrane is very small (being only 10A or so)
(removal rate are up to 97%-98%) such as dissolved salts, colloid, microorganism, organic matter in water.Reverse osmosis is that current high purity water is set
Most widely used a kind of desalting technology in standby, its separation object are the organic of ion range in solution and molecular weight hundreds of
Object；Reverse osmosis (RO), hyperfiltration (UF), micro-pore-film filtration (MF) and electrodialysis (EDI) technology belong to membrane separation technique.
Often containing some impurity in the ammonium nitrate wastewater handled by nitro-compound fertilizer device, these impurity are easy to adhere to
On counter-infiltration system, the ultrafiltration of counter-infiltration system and first-stage reverse osmosis film are blocked, and the substance viscosity blocked is big, using routine
Acidic cleaner hydrochloric acid, nitric acid, the drugs such as sulfuric acid and alkaline cleaner caustic soda, sodium hypochlorite do not imitate substantially after carrying out foam washing
Fruit, even if being rinsed again to blocking substance with water on the basis of drug foam washing, effect still unobvious, it is reverse osmosis that treated
System can only maintain 1-2 days, just come back to the state of blocking, and carry out drug foam washing and rinse to handle to need 12- every time
24 hours, not only of high cost, time-consuming and laborious, treatment effect was also bad, seriously affected the production efficiency of factory.Therefore, it is necessary to
Restudy a set of practical, and the reverse osmosis water treatment system method for cleaning of high treating effect.
Invention content
For the above-mentioned prior art the problem of, the purpose of the present invention is to provide a kind of reverse osmosis water treatment systems
Method for cleaning；The present invention after the characteristic of ammonium nitrate wastewater that nitro-compound fertilizer device is handled is analyzed to having found：Cause
The reason of substance is difficult to clean up is blocked to be：Nitrification mushroom in ammonium nitrate wastewater, these nitrifiers are by reverse osmosis water
Ultrafiltration and first-stage reverse osmosis film can be adhered to when the ultrafiltration of processing system and first-stage reverse osmosis film, blocks ultrafiltration and first-stage reverse osmosis
Film, on this basis, the present invention using cleaning, drug foam washing, air quick separating, clear water flushing method, realize ultrafiltration,
Per 2-3, month cleaning can once meet the effect of production requirement to counter-infiltration system.
An object of the present invention is to provide a kind of reverse osmosis water treatment system method for cleaning.
The second object of the present invention is to provide the application of above-mentioned reverse osmosis water treatment system method for cleaning.
For achieving the above object, the invention discloses following technical schemes：
First, the invention discloses a kind of reverse osmosis water treatment system method for cleaning, specifically comprise the following steps：
1) it cleans：Waste water in reverse osmosis water treatment system is washed, the waste water in anti-locking system influences outer draining；
2) drug foam washing：Metal peroxides is added to the water and is configured to heated alkaline solution, by reverse osmosis water treatment system
Ultrafiltration and first-stage reverse osmosis film impregnate in above-mentioned heated alkaline solution, it is thin to the nitrification being adhered in ultrafiltration and first-stage reverse osmosis film
Bacterium carries out impregnating cleaning and air supporting cleaning, takes out ultrafiltration and first-stage reverse osmosis film after the completion, for use；
3) air quick separating：For use ultrafiltration and first-stage reverse osmosis film, which are placed in high-speed air, in step 2) carries out air
Quick separating, in order to remain adhered to nitrobacteria in ultrafiltration and first-stage reverse osmosis film and other impurities carry out it is clear again
Reason；
4) it rinses：With clear water rinsing step 3) in ultrafiltration after air quick separating and first-stage reverse osmosis film, in order to right
The nitrobacteria separated is cleaned, and the nitrobacteria and its that are adhered in ultrafiltration and first-stage reverse osmosis film are removed with thorough
His impurity；
5) step 1) to after 4) 2-3 times, that is, completes the cleaning of reverse osmosis water treatment system repeatedly.
In step 2), the metal peroxides includes sodium peroxide, potassium peroxide.
In step 2), the input amount of the metal peroxides is 80-120g/L.
It is described to impregnate cleaning and the time that air supporting is cleared up for 2-3h in step 2).
In step 3), the air velocity of the high-speed air is：5-8m/s.
In step 3), the time of the air quick separating is 0.5-1h.
Secondly, the invention also discloses above-mentioned reverse osmosis water treatment system method for cleaning in reverse osmosis, hyperfiltration, microporous barrier
Application in filtering and the cleaning of electrodialytic water processing system.
It should be noted that the present invention is primarily directed to for handling the super of the reverse osmosis water treatment system of ammonium nitrate wastewater
Filter and first-stage reverse osmosis film, since ammonium nitrate is strong acid weak base salt, it is faintly acid to lead to ammonium nitrate wastewater, and pH value is about 5
Left and right, and nitrobacteria is easy to survive under acidic environment, and can be firmly adhered in ultrafiltration and first-stage reverse osmosis film, and
This kind of bacterium can largely be bred just using nitrogenous inorganic salts as nutriment, lead to ultrafiltration and first-stage reverse osmosis film
Severe blockage, in addition, nitrobacteria is also easy to be grown in weakly alkaline environment, it therefore, be to reverse osmosis water treatment system
Ultrafiltration and first-stage reverse osmosis film thoroughly cleared up, it is necessary to destroy weak acid and weak base this ring for being easy to nitrobacteria existence
Border (PH about 6.5~8.2), reduces its adhesive capacity.The present invention is found by experiment that：Nitrobacteria is under alkalinity and hot water environment
Adhesive capacity can be greatly lowered, but the adherency of nitrobacteria only cannot be destroyed by the immersion of alkaline solution hot water completely
Power, therefore, the present invention using it are reacted by the input of metal peroxides and generate alkaline product and gas, and release in water
The characteristics of amplification quantity heat, carries out impregnating cleaning and air supporting is cleared up to the nitrobacteria in ultrafiltration and first-stage reverse osmosis film, former
Reason is：After sodium peroxide is added to the water, reaction generate this alkaline matter of sodium hydroxide, while released a large amount of oxygen and
Heat, as a result, generate the hot solution of strong basicity, and the cell wall of nitrobacteria in this hot alkaline solution by strong
Strong destruction, adhesion strength decline to a great extent, meanwhile, a large amount of oxygen of generation float, and accelerate the stream of nitrobacteria surrounding liquid
Dynamic rate promotes nitrobacteria coming off from ultrafiltration and first-stage reverse osmosis film, is handled by this step, 90% nitrobacteria quilt
Cleaning, then, by the impact of the high-speed air of 5-8m/s, remaining nitrobacteria is also detached, and finally, is rinsed by clear water
Afterwards, the nitrobacteria other impurities being adhered in ultrafiltration and first-stage reverse osmosis film are thoroughly removed；It is reverse osmosis by above step
The tamper removal rate of water treatment system reaches more than 98%, and reverse osmosis and ultra-filtration flux reaches design discharge, complies fully with life
Production needs.
Compared with prior art, the present invention achieves following advantageous effect：The method of the present invention is to anti-penetration wastewater disposal system
In tamper cleaning it is thorough, cleaning efficiency is high, and cleaning effect is good, and to ultrafiltration, counter-infiltration system, per 2-3, month cleaning is primary i.e.
Production requirement can be met.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, existing method for cleaning has that time-consuming, cleaning is not thorough, effect difference etc. lacks
Point, to solve the above-mentioned problems, the present invention provides a kind of reverse osmosis water treatment system method for cleaning, with reference to specific reality
Applying example, the present invention is described further.
Embodiment 1：
A kind of reverse osmosis water treatment system method for cleaning, specifically comprises the following steps：
1) it cleans：Waste water in reverse osmosis water treatment system is washed, the waste water in anti-locking system influences outer draining；
2) drug foam washing：4kg sodium peroxides are slowly added to be configured to hot sodium hydroxide solution in 50L water, it will be reverse osmosis
The ultrafiltration of water treatment system and first-stage reverse osmosis film impregnate 2h in above-mentioned hot sodium hydroxide solution, anti-to being adhered to ultrafiltration and level-one
Nitrobacteria on permeable membrane carries out impregnating cleaning and air supporting cleaning, takes out ultrafiltration and first-stage reverse osmosis film after the completion, for use；
3) air quick separating：In step 2) for use ultrafiltration and first-stage reverse osmosis film be placed in the high-speed air of 8m/s into
Row air quick separating 0.5h, in order to remaining adhered to nitrobacteria and other impurities in ultrafiltration and first-stage reverse osmosis film
It is cleared up again；
4) it rinses：With clear water rinsing step 3) in ultrafiltration after air quick separating and first-stage reverse osmosis film, in order to right
The nitrobacteria separated is cleaned, and the nitrobacteria and its that are adhered in ultrafiltration and first-stage reverse osmosis film are removed with thorough
His impurity；
5) step 1) to after 4) 2 times, that is, completes the cleaning of reverse osmosis water treatment system repeatedly
Tamper in the ultrafiltration and first-stage reverse osmosis film of the reverse osmosis water treatment system that are handled by the present embodiment removes
Rate reaches 98%, and the normal use phase is 64 days.
Embodiment 2：
A kind of reverse osmosis water treatment system method for cleaning, specifically comprises the following steps：
1) it cleans：Waste water in reverse osmosis water treatment system is washed, the waste water in anti-locking system influences outer draining；
2) drug foam washing：6kg potassium peroxides are slowly added to be configured to hot potassium hydroxide solution in 50L water, it will be reverse osmosis
The ultrafiltration of water treatment system and first-stage reverse osmosis film impregnate 3h in above-mentioned hot potassium hydroxide solution, anti-to being adhered to ultrafiltration and level-one
Nitrobacteria on permeable membrane carries out impregnating cleaning and air supporting cleaning, takes out ultrafiltration and first-stage reverse osmosis film after the completion, for use；
3) air quick separating：In step 2) for use ultrafiltration and first-stage reverse osmosis film be placed in the high-speed air of 5m/s into
Row air quick separating 1h, in order to remain adhered to nitrobacteria in ultrafiltration and first-stage reverse osmosis film and other impurities into
Row is cleared up again；
4) it rinses：With clear water rinsing step 3) in ultrafiltration after air quick separating and first-stage reverse osmosis film, in order to right
The nitrobacteria separated is cleaned, and the nitrobacteria and its that are adhered in ultrafiltration and first-stage reverse osmosis film are removed with thorough
His impurity；
5) step 1) to after 4) 3 times, that is, completes the cleaning of reverse osmosis water treatment system repeatedly.
Tamper in the ultrafiltration and first-stage reverse osmosis film of the reverse osmosis water treatment system that are handled by the present embodiment removes
Rate reaches 99%, and the normal use phase is 88 days.
Embodiment 3：
A kind of reverse osmosis water treatment system method for cleaning, specifically comprises the following steps：
1) it cleans：Waste water in reverse osmosis water treatment system is washed, the waste water in anti-locking system influences outer draining；
2) drug foam washing：6kg sodium peroxides are slowly added to be configured to hot sodium hydroxide solution in 50L water, it will be reverse osmosis
The ultrafiltration of water treatment system and first-stage reverse osmosis film impregnate 3h in above-mentioned hot sodium hydroxide solution, anti-to being adhered to ultrafiltration and level-one
Nitrobacteria on permeable membrane carries out impregnating cleaning and air supporting cleaning, takes out ultrafiltration and first-stage reverse osmosis film after the completion, for use；
3) air quick separating：In step 2) for use ultrafiltration and first-stage reverse osmosis film be placed in the high-speed air of 7m/s into
Row air quick separating 40min, in order to remaining adhered to nitrobacteria in ultrafiltration and first-stage reverse osmosis film and other are miscellaneous
Matter is cleared up again；
4) it rinses：With clear water rinsing step 3) in ultrafiltration after air quick separating and first-stage reverse osmosis film, in order to right
The nitrobacteria separated is cleaned, and the nitrobacteria and its that are adhered in ultrafiltration and first-stage reverse osmosis film are removed with thorough
His impurity；
5) step 1) to after 4) 2 times, that is, completes the cleaning of reverse osmosis water treatment system repeatedly.
Tamper in the ultrafiltration and first-stage reverse osmosis film of the reverse osmosis water treatment system that are handled by the present embodiment removes
Rate reaches 98%, and the normal use phase is 75 days.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (8)
1. a kind of reverse osmosis water treatment system method for cleaning, feature are：Specifically comprise the following steps：
A kind of reverse osmosis water treatment system method for cleaning, specifically comprises the following steps：
1) it cleans：Waste water in reverse osmosis water treatment system is washed, the waste water in anti-locking system influences outer draining；
2) drug foam washing：Metal peroxides is added to the water and is configured to heated alkaline solution, by the super of reverse osmosis water treatment system
Filter and first-stage reverse osmosis film are impregnated in above-mentioned heated alkaline solution, to be adhered to the nitrobacteria in ultrafiltration and first-stage reverse osmosis film into
Row impregnates cleaning and air supporting cleaning, takes out ultrafiltration and first-stage reverse osmosis film after the completion, for use；
3) air quick separating：It is quick to be placed in progress air in high-speed air for for use ultrafiltration and first-stage reverse osmosis film in step 2)
Separation；
4) it rinses：With clear water rinsing step 3) in ultrafiltration after air quick separating and first-stage reverse osmosis film, that is, complete reverse osmosis
The cleaning of water treatment system.
2. reverse osmosis water treatment system method for cleaning as described in claim 1, feature are：In step 2), the metal
Peroxide includes sodium peroxide, potassium peroxide.
3. reverse osmosis water treatment system method for cleaning as described in claim 1, feature are：In step 2), the metal
The input amount of peroxide is 80-120g/L.
4. reverse osmosis water treatment system method for cleaning as described in claim 1, feature are：In step 2), the immersion
The time of cleaning and air supporting cleaning is 2-3h.
5. reverse osmosis water treatment system method for cleaning as described in claim 1, feature are：In step 3), the high speed
The air velocity of air is：5-8m/s.
6. reverse osmosis water treatment system method for cleaning as described in claim 1, feature are：In step 3), the air
The time of quick separating is 0.5-1h.
7. such as claim 1-6 any one of them reverse osmosis water treatment system method for cleaning, feature is：Repeat step 1)
To after 4) 2-3 times, that is, complete the cleaning of reverse osmosis water treatment system.
8. if claim 1-6 any one of them reverse osmosis water treatment system method for cleaning is in reverse osmosis, hyperfiltration, microporous barrier
Application in filtering and the cleaning of electrodialytic water processing system.
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| CN201711261574.4A CN108217841B (en) | 2017-12-04 | 2017-12-04 | Reverse osmosis water treatment system cleaning method |
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-
2017
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|---|---|---|---|---|
| US4740308A (en) * | 1984-04-26 | 1988-04-26 | Champion International Corporation | Membrane cleaning process |
| US6045708A (en) * | 1996-02-22 | 2000-04-04 | Eriksson; Jan-Olof | Method for controlling microorganisms |
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