CN102716673A - Compound cleaning agent for cleaning organic dirt blocking matter in membrane system - Google Patents
Compound cleaning agent for cleaning organic dirt blocking matter in membrane system Download PDFInfo
- Publication number
- CN102716673A CN102716673A CN2012101930850A CN201210193085A CN102716673A CN 102716673 A CN102716673 A CN 102716673A CN 2012101930850 A CN2012101930850 A CN 2012101930850A CN 201210193085 A CN201210193085 A CN 201210193085A CN 102716673 A CN102716673 A CN 102716673A
- Authority
- CN
- China
- Prior art keywords
- cleaning
- cleaning agent
- reverse osmosis
- compound
- membrane
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Detergent Compositions (AREA)
Abstract
The invention discloses a compound cleaning agent for cleaning an organic dirt blocking matter in a membrane system, relates to the technical field of water treatment and specifically relates to the compound cleaning agent. A novel cleaning agent for a reverse osmosis membrane is prepared according to the following steps: firstly, taking 3-5mg/l polyacrylic acid and scattering in 90-110mg/l water, and stirring for 9-11 minutes; secondly, taking 65-75mg/l sodium hydroxide with 45-55% concentration and adding into the solution, and stirring for 8-12 minutes; and then adding 22-28mg/l hydroxyethylidene diphosphonic acid and stirring for 8-12 minutes; and standing for 0.8-1.2 hours. The compound cleaning agent provided by the invention solves the problems of the prior art that the irreversible damage to the reverse osmosis (RO) membrane is caused by cleaning the reverse osmosis membrane with a single drug, the rebound is quick and the cleaning is frequent because the aged dirt or dirt scaled for a long time cannot be washed off by singly using the cleaning agents, such as citric acid and sodium hydroxide.
Description
Technical field
The present invention relates to water-treatment technology field, be specifically related to a kind of complex cleaning and washing agent.
Background technology
Reverse osmosis membrane often cleans with single medicament in order to save system operation cost at present a lot of enterprises, and the simplest in fact problem is exactly PH control, if PH control is improper, is easy to cause the irreversible damage of RO film; In addition; Only use cleaning agents such as citric acid, NaOH, effect is very single, though can wash simple dirt such as some calcium ions and magnesium ions off; But can not wash some old dirts or the chronic dirt of fouling off, so just cause and rebounded soon, clean frequent shortcoming.
Summary of the invention
The present invention provides the complex cleaning and washing agent of organic fouling in a kind of cleaning membrane system, the invention solves prior art and adopts single medicament to clean reverse osmosis membrane, causes the irreversible damage of RO film; And only use cleaning agents such as citric acid, NaOH, and can not wash some old dirts or the chronic dirt of fouling off, rebound soon, clean frequent problem like this with regard to having caused.
For addressing the above problem, the present invention adopts following technical scheme: the complex cleaning and washing agent of organic fouling in a kind of cleaning membrane system, and at first get polyacrylic acid 3-5mg/l and be scattered in the 90-110mg/l water, stirred 9-11 minute; Secondly, getting concentration is that 45-55% NaOH 65-75mg/l adds in the solution, stirs 8-12 minute, drops into hydroxy ethylene diphosphonic acid 22-28mg/l again, stirs after 8-12 minute, leaves standstill 0.8-1.2 hour, is made into a kind of novel reverse osmosis membrane cleaning agent.
The organic matter on reverse osmosis membrane surface is mainly derived from the preliminary treatment water outlet and does not reach counter-infiltration system water inlet requirement, just causes the deposition of polluters such as organic matter, suspension, colloid, causes the permeability of film to descend.The present invention is composite through using hydroxy ethylidene-diphosphate, NaOH, polyacrylic acid to carry out, and produces a kind of novel reverse osmosis membrane complex cleaning and washing agent.
The present invention be to various medicaments carry out compound, the prescription of developing not only can wash some simple calcium magne-scales, and can remove organic matter, colloidal impurity and deposition old dirt for many years.
The present invention can remove attached to pollutants such as the organic matter on reverse osmosis membrane surface, suspension, colloids, thereby improves aquifer yield and produce quality, prolongs the service life of reverse osmosis membrane, reduces operating cost.
Advantage of the present invention: the removal effect to organic matter, suspension, colloid is fine, effectively increases the permeability of film, improves aquifer yield and produces quality, prolongs the service life of film, reduces operating cost.
The specific embodiment
With illustrated embodiments the present invention is done detailed explanation
below.
The complex cleaning and washing agent of organic fouling in a kind of cleaning membrane system is at first got polyacrylic acid 4mg/l and is scattered in the 100mg/l water, stirs 10 minutes; Secondly, getting concentration is that 50% NaOH 70mg/l adds in the solution, stirs 10 minutes, drops into hydroxy ethylene diphosphonic acid 25mg/l again, stirs after 10 minutes, leaves standstill 1 hour, is made into a kind of novel reverse osmosis membrane cleaning agent.
This cleaning agent can effectively be removed pollutants such as organic matter, suspension, colloid, foundry loam, bacterium.
Method for using: cleaning agent is pressed the 1:45 mass fraction than dilution with pure water, and PH is controlled between the 10-11, system is cleaned again.
Adopt cleaning agent of the present invention and prior art cleaning agent commonly used cleaning membrane system respectively; Compare after the cleaning; Organic matter, suspension, colloid, foundry loam, bacterium etc. all clean up and noresidue in the system of cleaning agent cleaning of the present invention back, and organic matter, suspension, colloid, foundry loam, bacterium etc. have part residual in the cleaning agent cleaning back system of prior art; The permeability that cleaning agent of the present invention cleans caudacoria improves 50% than prior art cleaning agent, aquifer yield and the also corresponding raising 20% of product quality, and improved 20% the service life of film, and operating cost reduces by 20%.
What should explain at last is: obviously, the foregoing description only be for clearly the present invention is described and is done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (1)
1. the complex cleaning and washing agent of organic fouling in the cleaning membrane system is characterized in that, at first gets polyacrylic acid 3-5mg/l and is scattered in the 90-110mg/l water, stirs 9-11 minute; Secondly, getting concentration is that 45-55% NaOH 65-75mg/l adds in the solution, stirs 8-12 minute, drops into hydroxy ethylene diphosphonic acid 22-28mg/l again, stirs after 8-12 minute, leaves standstill 0.8-1.2 hour, is made into a kind of novel reverse osmosis membrane cleaning agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101930850A CN102716673A (en) | 2012-06-13 | 2012-06-13 | Compound cleaning agent for cleaning organic dirt blocking matter in membrane system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101930850A CN102716673A (en) | 2012-06-13 | 2012-06-13 | Compound cleaning agent for cleaning organic dirt blocking matter in membrane system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102716673A true CN102716673A (en) | 2012-10-10 |
Family
ID=46942618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101930850A Pending CN102716673A (en) | 2012-06-13 | 2012-06-13 | Compound cleaning agent for cleaning organic dirt blocking matter in membrane system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102716673A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957089A (en) * | 2017-04-17 | 2017-07-18 | 同济大学 | A kind of twice-modified method of discarded reverse osmosis membrane available for treatment of dyeing wastewater |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10296060A (en) * | 1997-04-25 | 1998-11-10 | Japan Organo Co Ltd | Prevention method for contamination of separation membrane |
| CN101721916A (en) * | 2008-10-24 | 2010-06-09 | 中国石油化工股份有限公司 | Chemical cleaning method of reverse osmosis membrane |
| CN101935107A (en) * | 2009-07-03 | 2011-01-05 | 上海丰信环保科技有限公司 | High-hardness water-quality scale inhibition agent |
| CN102049188A (en) * | 2010-12-28 | 2011-05-11 | 北京博奇电力科技有限公司 | Method for computing gas pressure loss of spray layers in spray tower |
| CN102153169A (en) * | 2010-12-24 | 2011-08-17 | 上海交通大学 | Method for controlling soluble microbial product organic pollutants on reverse osmosis membrane |
-
2012
- 2012-06-13 CN CN2012101930850A patent/CN102716673A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10296060A (en) * | 1997-04-25 | 1998-11-10 | Japan Organo Co Ltd | Prevention method for contamination of separation membrane |
| CN101721916A (en) * | 2008-10-24 | 2010-06-09 | 中国石油化工股份有限公司 | Chemical cleaning method of reverse osmosis membrane |
| CN101935107A (en) * | 2009-07-03 | 2011-01-05 | 上海丰信环保科技有限公司 | High-hardness water-quality scale inhibition agent |
| CN102153169A (en) * | 2010-12-24 | 2011-08-17 | 上海交通大学 | Method for controlling soluble microbial product organic pollutants on reverse osmosis membrane |
| CN102049188A (en) * | 2010-12-28 | 2011-05-11 | 北京博奇电力科技有限公司 | Method for computing gas pressure loss of spray layers in spray tower |
Non-Patent Citations (1)
| Title |
|---|
| 刘玉岭等: "《洗净技术基础》", 31 July 2005, 北京：化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106957089A (en) * | 2017-04-17 | 2017-07-18 | 同济大学 | A kind of twice-modified method of discarded reverse osmosis membrane available for treatment of dyeing wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205773547U (en) | A kind of Self-cleaning type electrodialysis system | |
| CN105080893A (en) | Filtration washing method for clean in place (CIP) central control system of dairy product production line | |
| CN106512744A (en) | Method for cleaning reverse osmosis membrane element | |
| CN102701467A (en) | Scale detergent | |
| CN102716673A (en) | Compound cleaning agent for cleaning organic dirt blocking matter in membrane system | |
| JP4850467B2 (en) | Cleaning method for membrane deaerator | |
| CN101757857A (en) | Composite cleaning agent for cleaning membrane system with organic fouling | |
| CN100450596C (en) | Micro-filtering or super-filtering film regenerating agent and preparing method | |
| CN203419809U (en) | Pure water system for glass coating production line | |
| CN105817143B (en) | A kind of cleaning method of ultrafiltration membrane surface iron colloid | |
| CN102489160A (en) | Cleaning method for calcium scale of reverse osmosis membrane | |
| CN103272480A (en) | Method for cleaning continuous electric demineralizer | |
| CN208449073U (en) | A kind of disc tube reverse osmosis (dt-ro) Membrane cleaning system | |
| CN103861462A (en) | Filter membrane online washing system and washing method | |
| CN102755836A (en) | Method for chemically washing reverse osmosis device | |
| CN101912735A (en) | Chemical cleaning method of ultrafiltration membrane for metallurgical sewage pretreatment | |
| CN201785265U (en) | Treatment device for treating trace antimony in domestic drinking water | |
| CN205011525U (en) | Electron industrial water's purification device | |
| CN105169953A (en) | Enzyme cleaning agent for removing reverse osmosis membrane microbial contaminants and use method thereof | |
| CN204563695U (en) | Water purifier | |
| CN203866146U (en) | Purified water production system | |
| CN104162366A (en) | Cleaning agent for filtering membranes | |
| CN102716672A (en) | Composite cleaning agent for cleaning calciferous, magniferous, siliceous and ferrous fouling of membrane system | |
| CN203256064U (en) | Domestic water treatment system | |
| CA2971937C (en) | Method for identifying the type of clogging in a membrane filtration apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121010 |