CN1864826A - A scale inhibitor for reverse osmosis membrane - Google Patents
A scale inhibitor for reverse osmosis membrane Download PDFInfo
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- CN1864826A CN1864826A CN 200610013551 CN200610013551A CN1864826A CN 1864826 A CN1864826 A CN 1864826A CN 200610013551 CN200610013551 CN 200610013551 CN 200610013551 A CN200610013551 A CN 200610013551A CN 1864826 A CN1864826 A CN 1864826A
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- China
- Prior art keywords
- water
- acid
- antisludging agent
- lignin
- reverse osmosis
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Abstract
The invention relates to a water treating technology using reverse osmosis membrane, which is a antisludging agent for reverse osmosis membrane. It is characterized in that it comprises following components with their percentage by weight: organo-phosphines acid compound 5-20%, lignin 0.5-1%, polymaleic anhydride0.5-3%, phosphinic carboxyl acid 5-20% and water with left percentage.
Description
Technical field
The present invention relates to the reverse osmosis membrane water technology, be a kind of antisludging agent for osmosis-reverse membrane.
Technical background
Reverse osmosis technology is to utilize the membrane separation technique of pressure reduction for power, all impurity---various ions, molecule, organic matter, colloid, bacterium, virus, thermal source etc. during it can remove and anhydrates are efficient, low consumption, the pollution-free water treatment new technologies that the world today generally acknowledges.Membrane technology is able to increasingly extensive application in desalination, ultra-pure water preparation, sewage disposal and the various separation purification process of industries such as electronics, chemical industry, medicine, food in recent years.
At present, the reverse osmosis membrane development is rapid day by day, uses increasingly extensive.Counter-infiltration system is used for all trades and professions even daily life.Domestic water also will be by the pure water supply in the future, and this has been the inexorable trend of development.Meanwhile, membrane module and equipment and integrated technology are also developed rapidly and are constantly perfect, yet the pollution of film and deterioration are one of bottlenecks that restricts all the time the membrane technology development.Along with the extensive use and the development of reverse osmosis membrane technology, film also sharply increases with the application quantity of chemicals, as film dispersant, bactericide, cleaning agent, antisludging agent and flocculant etc.
In the film field of chemicals, the high efficiency antisludging agent for osmosis-reverse membrane of developing low-cost has important and practical meanings.
Summary of the invention
Purpose of the present invention just is being to provide a kind of antisludging agent for osmosis-reverse membrane of low-cost high-efficiency.
The present invention is a kind of antisludging agent for osmosis-reverse membrane, be characterised in that and include machine phosphonic acid compound, lignin, poly or acid anhydride, phosphine carboxylic acid and water, the percentage by weight of each component is: organic phospho acid compound 5～20%, lignin 0.5～1%, poly or acid anhydride 0.5～3%, phosphine carboxylic acid 5～20%, surplus are water;
Wherein the organic phospho acid compound comprises ATMP and HEDP;
The phosphine carboxylic acid comprises polyamino polyether base methylenephosphonic acid salt.
Further prescription is: organic phospho acid compound 7～18%, and lignin 0.8～1%, poly or acid anhydride 2～7%, phosphine carboxylic acid 6～16%, surplus is a water.
Further prescription is: organic phospho acid compound 10～16%, and lignin 0.8～1%, poly or acid anhydride 3～6%, phosphine carboxylic acid 7～12%, surplus is a water.
This antisludging agent can effectively be controlled CaCO
3, CaSO
4, BaSO
4, SrSO
4With extensive fouling on reverse osmosis membrane such as CaF, reduce the cleaning frequency of counter-infiltration system, prolong the service life of membrane component, reduce the operating cost of equipment greatly.This antisludging agent for osmosis-reverse membrane is a fluid product, uses simply, is applicable to various types of reverse osmosis membranes.
Using method of the present invention: in order to reach best scale-inhibiting properties, add snack made with traditional Chinese medicines and should be located at before blender or the security personnel's filter, add continuously, maintain on the level to guarantee dose with measuring pump.Antisludging agent for osmosis-reverse membrane of the present invention and water can dissolve each other with any ratio, and adding dose should decide according to supplementing water water quality.Antisludging agent for osmosis-reverse membrane of the present invention is acidic materials, and the medicine machine material recommends to use stainless steel, polyethylene, PVC or polytetrafluoroethylene (PTFE), does not recommend to use carbon steel.
The specific embodiment
The present invention will be further described below by embodiment
Embodiment 1:
With prescription be: ATMP 12%, lignin 0.5%, poly 1%, polyamino polyether base methylenephosphonic acid salt 7%, the film of water 79.5% is on probation on the small-sized counter-infiltration system of a cover with antisludging agent, and experimental data is as follows:
| Electrical conductivity μ s/cm | Pressure reduction MPa | Aquifer yield m 3/h | ||
| Before the dosing | Initially | 3 | 0.2 | ?2.0 |
| Behind the first quarter moon | 40 | 0.32 | ?1.0 | |
| After the dosing | Initially | 3 | 0.2 | ?2.0 |
| Behind the first quarter moon | 3 | 0.2 | ?1.9 | |
This shows, antisludging agent for osmosis-reverse membrane of the present invention in the water easily in counter-infiltration the various salts of fouling good scale inhibition peptizaiton is arranged, be a kind of desirable medicament of protection reverse osmosis membrane and device.
Embodiment 2:
Prescription is HEDP 12%, lignin 0.8%, and HPMA 4%, polyamino polyether base methylenephosphonic acid salt 8%, the film of water 75.2% is used in certain company scene with antisludging agent.
The first-stage reverse osmosis device of the cover 50T/h of the said firm one, the input initial stage is not added antisludging agent, and after operation January, system is seriously contaminated, and pressure reduction increases, and salt rejection rate reduces, and aquifer yield obviously descends, and equipment can not normally move.After having added film of the present invention and cleaning with antisludging agent, the equipment operational excellence, the every index of water yield and water outlet all can reach production requirement.
Embodiment 3:
Prescription is HEDP 10%, lignin 1%, HPMA 5%, polyamino polyether base methylenephosphonic acid salt 8%, it is on the reverse osmosis equipment of 100T/h that the film of water 76% is used in certain company's processing water yield with antisludging agent, just begin to add from the input initial stage, equipment moves and still keeps good disposal ability half a year.
Claims (3)
1. antisludging agent for osmosis-reverse membrane, be characterised in that and include machine phosphonic acid compound, lignin, poly or acid anhydride, phosphine carboxylic acid and water, the percentage by weight of each component is: organic phospho acid compound 5～20%, lignin 0.5～1%, poly or acid anhydride 0.5～3%, phosphine carboxylic acid 5～20%, surplus are water;
Wherein the organic phospho acid compound comprises ATMP, HEDP;
The phosphine carboxylic acid comprises polyamino polyether base methylenephosphonic acid salt.
2. according to the described antisludging agent of claim 1, be characterised in that prescription is: organic phospho acid compound 7～18%, lignin 0.8～1%, poly or acid anhydride 2～7%, phosphine carboxylic acid 6～16%, surplus is a water.
3. according to the described antisludging agent of claim 1, be characterised in that prescription is: organic phospho acid compound 10～16%, lignin 0.8～1%, poly or acid anhydride 3～6%, phosphine carboxylic acid 7～12%, surplus is a water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610013551 CN1864826A (en) | 2006-04-27 | 2006-04-27 | A scale inhibitor for reverse osmosis membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610013551 CN1864826A (en) | 2006-04-27 | 2006-04-27 | A scale inhibitor for reverse osmosis membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1864826A true CN1864826A (en) | 2006-11-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610013551 Pending CN1864826A (en) | 2006-04-27 | 2006-04-27 | A scale inhibitor for reverse osmosis membrane |
Country Status (1)
| Country | Link |
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| CN (1) | CN1864826A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102284247A (en) * | 2010-06-21 | 2011-12-21 | 中国石油化工股份有限公司 | Method for cleaning reverse osmosis system |
| CN101704588B (en) * | 2009-11-17 | 2012-07-25 | 上海丰信环保科技有限公司 | Iron- and manganese-containing water scale inhibition and dispersion agent |
| CN101423299B (en) * | 2007-10-31 | 2012-11-21 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and preparation and use method thereof |
| CN103130346A (en) * | 2013-03-25 | 2013-06-05 | 安徽大地熊新材料股份有限公司 | Antisludging agent for high-hardness high-iron content water quality |
| CN107735365A (en) * | 2015-07-09 | 2018-02-23 | 栗田工业株式会社 | Cool down the recovery method and retracting device of draining |
-
2006
- 2006-04-27 CN CN 200610013551 patent/CN1864826A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101423299B (en) * | 2007-10-31 | 2012-11-21 | 中国石油化工股份有限公司 | Reverse osmosis membrane scale inhibitor and preparation and use method thereof |
| CN101704588B (en) * | 2009-11-17 | 2012-07-25 | 上海丰信环保科技有限公司 | Iron- and manganese-containing water scale inhibition and dispersion agent |
| CN102284247A (en) * | 2010-06-21 | 2011-12-21 | 中国石油化工股份有限公司 | Method for cleaning reverse osmosis system |
| CN103130346A (en) * | 2013-03-25 | 2013-06-05 | 安徽大地熊新材料股份有限公司 | Antisludging agent for high-hardness high-iron content water quality |
| CN107735365A (en) * | 2015-07-09 | 2018-02-23 | 栗田工业株式会社 | Cool down the recovery method and retracting device of draining |
| CN107735365B (en) * | 2015-07-09 | 2020-11-13 | 栗田工业株式会社 | Method and apparatus for recovering cooling drainage |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |