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Reverse osmosis water treatment agent and preparation method thereof

A reverse osmosis water and treatment agent technology, applied in the field of polymer chemistry, can solve the problems of long chemical cleaning cycle of reverse osmosis membrane, increase of reverse osmosis operation cost, poor deposition effect, etc., to prolong the chemical cleaning cycle and service life, and widely Scale inhibition performance, the effect of improving scale inhibition performance

Inactive Publication Date: 2010-12-15
HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reverse osmosis water treatment agent provided by this type of invention prevents CaCO 3 , CaSO 4 , Ca 3 (PO 4 ) 2 , BaSO 4 , SrSO 4 The deposition effect of scale on the reverse osmosis membrane is poor, and the chemical cleaning cycle of the reverse osmosis membrane is longer, which affects the service life of the reverse osmosis membrane and increases the operating cost of the reverse osmosis

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Reverse osmosis water treatment agent formula:

[0013] Hydroxyethylenediphosphonic acid (HEDP) 20%

[0014] Aminotrimethylenephosphonic acid (ATMP) 4%

[0015] Polyacrylic acid 2%

[0016] Sodium Polyacrylate 4.5%

[0017] Maleic acid-styrene sulfonic acid copolymer 7%

[0018] Hydrolyzed polymaleic anhydride (HPMA) 3.3%

[0019] Dodecyldimethylbenzylammonium chloride 0.2%

[0020] water 59%

Embodiment 2

[0022] Reverse osmosis water treatment agent formula:

[0023] Hydroxyethylenediphosphonic acid (HEDP) 16%

[0024] Ethylenediaminetetramethylenephosphonic acid (EDTMPA) 5.2%

[0025] Sodium Polyacrylate 2.3%

[0026] Acrylic acid-2-methyl-2-acrylamidopropanesulfonic acid-dimethyldiallylamine chloride copolymer (AA / AMPS / DMDAAC) 10.5%

[0027] Hydrolyzed polymaleic anhydride (HPMA) 3.5%

[0028] Dodecyldimethylbenzylammonium chloride 0.5%

[0029] water 62%

[0030] The preparation method of acrylic acid-2-methyl-2-acrylamido propanesulfonic acid-dimethyl diallyl amine chloride copolymer: weigh acrylic acid, dimethyl diallyl chloride according to the required ratio Amine and 2-methyl-2-acrylamidopropanesulfonic acid were respectively placed in a beaker and dissolved in distilled water; in a flask equipped with an electric stirring, a reflux condenser, a dropping funnel and a thermometer, the above-dissolved monohydrate was added. body, adjust the pH value of the solution ...

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Abstract

The invention discloses a reverse osmosis water treatment agent and a preparation method thereof, which belong to the field of polymer chemistry. The formula of the reverse osmosis water treatment agent consists of the following components in percentage by weight: 10 to 40 percent of the mixture of two organic phosphonic acid compounds, 1 to 10 percent of polyacrylic acid and / or sodium salt of the polyacrylic acid, 2 to 9 percent of hydrolyzed polymaleic anhydride, 2 to 20 percent of sulfonic acid copolymer, 0.1 to 3 percent of dodecyl dimethyl benzyl ammonium chloride and the balance of water. When used in a reverse osmosis water treatment system, the agent can prevent scales of CaCo3, CaSO4, Ca3(PO4)2, BaSO4, SrSO4 and the like and the deposition of iron hydroxide and zinc salt on a reverse osmosis membrane, so that the chemical cleaning period and the service life of the reverse osmosis membrane are prolonged.

Description

technical field [0001] The invention relates to a special water treatment technology for reverse osmosis membranes, in particular to a reverse osmosis water treatment agent and a preparation method thereof, belonging to the field of polymer chemistry. Background technique [0002] Water resources are extremely precious natural resources. With the development of industry, water resources are becoming increasingly scarce and water pollution is very serious. Reverse osmosis is a membrane separation technology developed in the 1960s. In recent years, membrane technology has developed rapidly and is mainly used in the field of reverse osmosis water treatment. Compared with the traditional technology, it has the characteristics of low energy consumption, normal temperature operation, high separation efficiency, stable effluent quality, no phase change in the treatment process, no need for acid-base regeneration, small footprint, small investment, and wide adaptability. In the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14
Inventor 张国宝庄玉伟曹健王颖赵根锁
Owner HIGH & NEW TECH RES CENT OF HENAN ACAD OF SCI
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