CN108854560A - A kind of RO cleaning agents of membrane - Google Patents
A kind of RO cleaning agents of membrane Download PDFInfo
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- CN108854560A CN108854560A CN201711127946.4A CN201711127946A CN108854560A CN 108854560 A CN108854560 A CN 108854560A CN 201711127946 A CN201711127946 A CN 201711127946A CN 108854560 A CN108854560 A CN 108854560A
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- 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
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
-
- 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
- B01D2321/16—Use of chemical agents
- B01D2321/162—Use of acids
-
- 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
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
Abstract
The invention discloses a kind of RO cleaning agents of membrane, are composed of the following raw materials in parts by weight：Citric acid：1-5 parts；Tartaric acid：1.5-3.5 part；Lauryl sodium sulfate：1-2；Polyacrylamide 0.5-1；Rouge peptide activating agent：2-4 parts；0.4% dichlormaine：0.2-1 parts；3-8 parts of sodium hydroxide；Sodium hydrogensulfite：1.8-3 part；Bisulfite amine：2.8-5 part；Potassium acetate：2-3 parts；Ethylenediamine tetra-acetic acid four is received：2-4 parts；Remaining as deionized water；The scale remover that the present invention uses effectively removes organic deposition by chemical reaction, dirt dissolution can be improved, rate that is loose, falling off reduces the adhesive force of dirt and metal contact surface and old dirt is made to fall off with dirt generation metathesis；The cleaning agent can quickly dissolve the inorganic calcium magne-scale of RO film surface in 2 hours, can significantly improve membrane flux and reduce membrane pressure.And the cleaning agent main component used is effective, harmless substance, it is environmentally protective, it is free from environmental pollution.
Description
Technical field
The present invention relates to a kind of cleaning agent, in particular to a kind of RO cleaning agents of membrane belongs to reverse osmosis membrane cleaning technique field.
Background technique
RO is the abbreviation of English ReverseOsmosis, and Chinese means reverse osmosis.Reverse osmosis technology is mainly used for seawater
The process and spaceman's waste water recycling device of desalination are all made of the method, therefore RO film is also known as external high-tech " artificial kidney
It is dirty ".At present both at home and abroad, the military civil field of medicine all takes top RO film to carry out macromolecular filtering.
Especially tap water in transfer device pipeline and all kinds of water receivers be related to Drinking Water for Residents, to the peace of detergent
Full property require it is very stringent, and the temperature of its normality work can just be generated generally all close to room temperature, after long-time service it is a certain amount of
Calcium and magnesium salt scale, and these scales are dissolved with the dirt-removing clean agent containing noxious material, then drinking water quality can be generated certain
Influence, do not meet the requirement of its high security.Therefore, it is necessary to seek the new technology of one kind to solve the problems, such as this.
Summary of the invention
The shortcomings that the technical problem to be solved by the present invention is to overcome the prior arts provides a kind of more high-efficiency washing inorganic calcium
The RO cleaning agents of membrane of magne-scale, to solve the above problems.
In order to solve the above-mentioned technical problems, the present invention provides the following technical solutions：
A kind of RO cleaning agents of membrane of the present invention, is composed of the following raw materials in parts by weight：Citric acid：1-5 parts；Tartaric acid：1.5-
3.5 part；Lauryl sodium sulfate：1-2 parts；Polyacrylamide：0.5-1 parts；Rouge peptide activating agent：2-4 parts；0.4% dichloro
Amine：0.2-1 parts；3-8 parts of sodium hydroxide；Sodium hydrogensulfite：1.8-3 part；Bisulfite amine：2.8-5 part；Potassium acetate：2-3 parts；
Ethylenediamine tetra-acetic acid four is received：2-4 parts；Remaining as deionized water.
As a preferred technical solution of the present invention, it is composed of the following raw materials in parts by weight：Citric acid：3.5 part；Winestone
Acid：2.5 part；Lauryl sodium sulfate：1.5 part；0.7 part of polyacrylamide；Rouge peptide activating agent：3 parts；0.4% dichlormaine：
0.7 part；5 parts of sodium hydroxide；Sodium hydrogensulfite：2.3 part；Bisulfite amine：4 parts；Potassium acetate：2.5 part；Ethylenediamine tetra-acetic acid
Four receive：2.4 part；Remaining as deionized water.
As a preferred technical solution of the present invention, lauryl sodium sulfate, polyacrylamide and rouge peptide activity
Agent is dispersing agent.
As a preferred technical solution of the present invention, the potassium acetate is ferrous stability, it may have certain
Prevent swollen performance.
As a preferred technical solution of the present invention, ethylenediamine tetra-acetic acid four is received as the softening agent of deionized water, sulfurous
Sour hydrogen amine and sodium hydrogensulfite are reduction initiator.
Compared with prior art, the beneficial effects of the invention are as follows：The scale remover that the present invention uses is effective by chemical reaction
Organic deposition is removed, the rate that dirt dissolves, is loose, falling off can be improved；And dirt is penetrated into rapidly under the action of dispersing agent
On metal bonding face, metathesis occurs with dirt, reduces the adhesive force of dirt and metal contact surface and old dirt is made to fall off；
The cleaning agent can quickly dissolve the inorganic calcium magne-scale of RO film surface in 2 hours, can significantly improve membrane flux and reduce membrane pressure.And
And the cleaning agent main component used is effective, harmless substance, the natural decomposition period is short, and the final simple of decomposition product can be effective
Raising water yield, reduce water body conductivity, extend film service life；And cost of material is moderate, can be greatly reduced
Cost is cleaned, while the cleaning effect of the cleaning agent is more preferably, has effects that thoroughly remove particularly with the organic matter on the surface RO,
The cleaning agent is environmentally protective, free from environmental pollution.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments, based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The cleaning of the film of production hydraulic art of the present invention suitable for carrying out RO film after tap water filter, cardinal symptom is before cleaning
RO film membrane pressure for filtering tap water rises, producing water ratio decline, and water outlet conductivity rises；It is needed at this time to tap water quality
Assessment of performance is carried out, the problem of if it is due to water quality, then after needing to do the previous preparatory work of tap water sufficiently, using
The filtering of RO film, such case is without cleaning RO film；Rise when membrane pressure caused by extraneous other factors is discharged, under producing water ratio
Drop, then need to clean RO film；
The step of RO film is cleaned be：
S1：Before clean to RO film：First with the fortune of 1/2 and 40~60PSI of normal wash flow
Row pressure squeezes into cleaning solution to reverse osmosis equipment, and removes the water retained inside film container.And just starting the cycle over portion back
It distinguishes washing lotion to exhaust, cleaning solution is prevented to be diluted；
S2：In normal wash, when cleaning system pressure control criterion is using system is almost prevented from output pure water
Pressure is best (i.e. cleaning system supply pressure is equal with the magnitude of pressure differential between raw water and condensed water)；Because of suitable cleaning fortune
The degree that row pressure can be such that a possibility that accumulating foreign substances again on reverse osmosis film surface is preferably minimized；
S3：When cleaning, the water retained inside pressure vessel in the past is first emptied into, cleaning process is then generated concentration again
Water and output water are recycled to rinse bath, and pay attention to that cleaning solution temperature is kept to stablize.It, first really before starting to carry out wash cycles
See clearly whether wash temperature and pH value have complied with standard.And the intuitive situation such as turbidity for the cleaning solution that flows back to it confirms：Such as
Obviously discoloration or feculence should then prepare cleaning solution to fruit reflux cleaning solution again；If the cleaning solution pH changing value that flows back is more than 0.5
When, it preferably readjusts pH value or is replaced and cleaned liquid；
S4：When carrying out chemical cleaning to system, low discharge (1/2 standard is used to the pressure vessel that needs clean first
Clean flow) wash cycles 5~15 minutes, then use again in 10~15 points of wash cycles of flow (2/3 standard cleaning flow)
Clock；Again using after normal discharge wash cycles 1-2 hours；
S5：Then termination of pumping and turn off valve, be immersed in membrane component in cleaning solution, at least impregnate 2 hours；Such as fouling membrane
Situation is more serious or cleans the pollutant of more difficult removal, and the soaking time of the process can be appropriately extended.To guarantee for a long time
The mode that circulation is combined with immersion that is repeated can also be used in cleaning solution temperature when immersion.The generally temperature of cleaning solution
Degree should at least be maintained at 20 DEG C or more and 40 DEG C hereinafter, forbidding more than 50 °, suitable cleaning solution temperature can enhance cleaning effect；
Because drug precipitating may occur in the process of cleaning for the too low cleaning solution of temperature.When cleaning solution temperature is too low, cleaning should be pacified
It comes to be increased to cleaning solution temperature after more appropriate temperature and carry out again；
S6：In normal wash, terminate cleaning solution immersion after, with standard cleaning flow again wash cycles 20~
After 60 minutes, it can generally terminate to clean.Then reverse osmosis membrane assembly is carried out with the reverse osmosis product water of same volume again
It rinses, and flushing water is discharged into sewer.After confirmation is rinsed well, reverse osmosis equipment can be reruned.It is proposed that
The product water produced in 15 minutes after reruning system after chemical cleaning should at least be discharged and to fielded system
After product water water quality carries out conscientious chemical analysis results confirmation, then system is run into obtained system output water and squeezes into product
Water tank.In addition, to prevent the chemical reaction between chemicals, being carried out every time when being cleaned using a variety of drugs
Clean before product water side discharge water preferably should also empty (if multilevel device, it is proposed that classification cleaned, to avoid flow without
The situation of method control --- i.e. first order flow is very little or most final stage flow is excessive, does so, is also possible to prevent in first order quilt
The pollution sediment washed off flows into next stage again, forms secondary pollution).
Example 1：
The present invention discloses a kind of technical solution：A kind of RO cleaning agents of membrane, extracts citric acid respectively：1 part；Tartaric acid：1.5
Part；Lauryl sodium sulfate：1 part；Polyacrylamide：0.5 part；Rouge peptide activating agent：2 parts；0.4% dichlormaine：0.2 part；
3 parts of sodium hydroxide；Sodium hydrogensulfite：1.8 part；Bisulfite amine：2.8 part；Potassium acetate：2 parts；Ethylenediamine tetra-acetic acid four is received：2
Part；It is stirred remaining as the reaction mother liquor that deionized water is equipped；In mixed injection reverse osmosis equipment, aforesaid operations are executed
Step S1-S6 can clean RO film；The chemical to RO Membrane cleaning is discharged, reruns system for a period of time
The product water produced afterwards；Membrane pressure, producing water ratio and water outlet conductivity of the product water on RO film are restored to reset condition
98.5%.
Example 2：
The present invention discloses a kind of technical solution：A kind of RO cleaning agents of membrane, extracts citric acid respectively：3.5 part；Tartaric acid：
2.5 part；Lauryl sodium sulfate：1.5 part；Polyacrylamide：0.7 part；Rouge peptide activating agent：3 parts；0.4% dichlormaine：
0.7 part；5 parts of sodium hydroxide；Sodium hydrogensulfite：2.3 part；Bisulfite amine：4 parts；Potassium acetate：2.5 part；Ethylenediamine tetra-acetic acid
Four receive：2.4 part；Remaining as deionization；The reaction mother liquor being equipped is stirred；In mixed injection reverse osmosis equipment, execute
Aforesaid operations step S1-S6 can clean RO film；The chemical to RO Membrane cleaning is discharged, system is reruned
The product water produced after a period of time；Membrane pressure, producing water ratio and water outlet conductivity of the product water on RO film are restored to
The 99% of reset condition.
Example 3：
The present invention discloses a kind of technical solution：A kind of RO cleaning agents of membrane, extracts citric acid respectively：5 parts；Tartaric acid：3.5
Part；Lauryl sodium sulfate：2 parts；Polyacrylamide：1 part；Rouge peptide activating agent：4 parts；0.4% dichlormaine：1 part；Hydrogen-oxygen
Change 8 parts of sodium；Sodium hydrogensulfite：3 parts；Bisulfite amine：5 parts；Potassium acetate：3 parts；Ethylenediamine tetra-acetic acid four is received：4 parts；Remaining as
Deionized water；The reaction mother liquor being equipped is stirred；In mixed injection reverse osmosis equipment, aforesaid operations step S1- is executed
S6 can clean RO film；The chemical to RO Membrane cleaning is discharged, is given birth to after reruning system for a period of time
The product water of output；Membrane pressure, producing water ratio and water outlet conductivity of the product water on RO film are restored to the 98% of reset condition.
Lauryl sodium sulfate, polyacrylamide and rouge peptide activating agent are dispersing agent, lauryl sodium sulfate, poly- third
Acrylamide and rouge peptide activating agent are used as dispersing agent to exist in RO cleaning agents of membrane, when the cleaning agent adds R0 Membrane cleaning equipment
In, lauryl sodium sulfate, polyacrylamide and rouge peptide activating agent will drive cleaning agent in related chemical constituents rapidly with
The dirt fusion deposited on RO film, substantially reduces the scavenging period of cleaning agent.
It is nitrogenous organic multicomponent phosphonic acids that ethylenediamine tetra-acetic acid four, which is received, belongs to cathode type corrosion inhibiter, compared with inorganic polyphosphate,
Corrosion inhibition rate is 3~5 times high.Water-miscible, nontoxic and pollution-free, chemical stability and temperature tolerance are good, still have at 200 DEG C good
Scale inhibition effect.Ethylenediamine tetra-acetic acid four is received can be dissociated into 8 negative ions in aqueous solution, thus can be with multiple metal ions
Chelating, forms multiple netted complex compounds of monomer structure macromolecular, is loosely dispersed in water, is destroyed calcium scale normal crystallization.
It is good to the scale inhibition effect of calcium sulfate, barium sulfate scale that ethylenediamine tetra-acetic acid four is received.
The potassium acetate is ferrous stability, it may have certain prevents swollen performance, in the same metal complex in metal surface
When, one layer of fine and close unimolecule organic protective film is easily formed, can effectively stop O2 etc. into metal surface, to inhibit metal
Corrosion, the present invention is 0.15-0.3g/ (m to the corrosion rate of N80 steel disc2.h), the corrosion rate of conventional cleaning agent is general
For 5g/ (m2.h) left and right, the present invention is to no corrosions such as pipe-line equipments in contrast.
Ethylenediamine tetra-acetic acid four is received as the softening agent of deionized water, can will meet as defined in deionized water soften into rapidly it is soft
Change water, the rate that dirt dissolves, is loose, falling off can be improved；And dirt and metal are penetrated into rapidly under the action of dispersing agent
On faying face, metathesis occurs with dirt, reduces the adhesive force of dirt and metal contact surface and old dirt is made to fall off；The cleaning
Agent can quickly dissolve the inorganic calcium magne-scale of RO film surface in 2 hours, can significantly improve membrane flux and reduce membrane pressure；Bisulfite
Amine and sodium hydrogensulfite are reduction initiator, and the free calcium ions and magnesium ions being effectively dissolved in reaction mother liquor are reduced into sulfuric acid
Salt, and exclude reverse osmosis equipment.
Finally it should be noted that：These are only the preferred embodiment of the present invention, is not intended to restrict the invention, although
Present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, still can be right
Technical solution documented by foregoing embodiments is modified or equivalent replacement of some of the technical features, it is all
Within the spirit and principles in the present invention, any modification, equivalent replacement, improvement and so on should be included in protection of the invention
Within the scope of.
Claims (5)
1. a kind of R0 cleaning agents of membrane, which is characterized in that be composed of the following raw materials in parts by weight：Citric acid：1-5 parts；Tartaric acid：
1.5-3.5 part；Lauryl sodium sulfate：1-2 parts；Polyacrylamide：0.5-1 parts；Rouge peptide activating agent：2-4 parts；0.4%
Dichlormaine：0.2-1 parts；3-8 parts of sodium hydroxide；Sodium hydrogensulfite：1.8-3 part；Bisulfite amine：2.8-5 part；Potassium acetate：2-3
Part；Ethylenediamine tetra-acetic acid four is received：2-4 parts；Remaining as deionized water.
2. a kind of RO cleaning agents of membrane according to claim 1, which is characterized in that be composed of the following raw materials in parts by weight：Citric acid：
3.5 part；Tartaric acid：2.5 part；Lauryl sodium sulfate：1.5 part；0.7 part of polyacrylamide；Rouge peptide activating agent：3 parts；
0.4% dichlormaine：0.7 part；5 parts of sodium hydroxide；Sodium hydrogensulfite：2.3 part；Bisulfite amine：4 parts；Potassium acetate：2.5 part；Second
Ethylenediamine tetraacetic acid (EDTA) four is received：2.4 part；Deionized water is 71.9 parts.
3. a kind of RO cleaning agents of membrane according to claim 1, which is characterized in that lauryl sodium sulfate, polyacrylamide and rouge
Peptide activating agent is dispersing agent.
4. a kind of RO cleaning agents of membrane according to claim 1, which is characterized in that the potassium acetate is ferrous stability,
Swollen performance is prevented with certain.
5. a kind of RO cleaning agents of membrane according to claim 1, which is characterized in that ethylenediamine tetra-acetic acid four is received as the soft of deionized water
Agent, bisulfite amine and sodium hydrogensulfite are reduction initiator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711127946.4A CN108854560A (en) | 2017-11-15 | 2017-11-15 | A kind of RO cleaning agents of membrane |
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| CN201711127946.4A CN108854560A (en) | 2017-11-15 | 2017-11-15 | A kind of RO cleaning agents of membrane |
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| CN201711127946.4A Pending CN108854560A (en) | 2017-11-15 | 2017-11-15 | A kind of RO cleaning agents of membrane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898674A (en) * | 2019-11-29 | 2020-03-24 | 江苏大储宝环境科技有限公司 | Water purifier reverse osmosis membrane cleaning agent and preparation method thereof |
| CN114504948A (en) * | 2022-02-17 | 2022-05-17 | 厦门嘉戎技术股份有限公司 | Reverse osmosis membrane silica scale cleaning agent and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110898674A (en) * | 2019-11-29 | 2020-03-24 | 江苏大储宝环境科技有限公司 | Water purifier reverse osmosis membrane cleaning agent and preparation method thereof |
| CN114504948A (en) * | 2022-02-17 | 2022-05-17 | 厦门嘉戎技术股份有限公司 | Reverse osmosis membrane silica scale cleaning agent and preparation method thereof |
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