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Reverse osmosis membrane scale inhibitor

A reverse osmosis membrane and antiscalant technology, applied in the field of antiscalants, can solve problems such as easy scaling on the surface of reverse osmosis membranes, scrapping of reverse osmosis membranes, affecting normal operation of reverse osmosis devices, etc., to achieve good resistance to high and low concentration calcium scale performance effect

Inactive Publication Date: 2010-08-25
北京合创同盛科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the operation of the reverse osmosis system, the surface of the reverse osmosis membrane is easily scaled due to chemical pollution, colloid pollution and microbial pollution, which will directly affect the normal operation of the reverse osmosis device, and even cause the reverse osmosis membrane to be scrapped.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 250mg sodium polyepoxysuccinate (content 30%, Beijing Lianzhong Dadi Technology Co., Ltd., the same below), 67mg aminotrimethylene phosphonic acid (content 30%, Shandong Taihe Water Treatment Co., Ltd., the same below), 12mg acrylic acid With 2-methyl-2'-acrylamido propane sulfonic acid copolymer (active component content 50%, Shandong Province Taihe Water Treatment Co., Ltd., the limit viscosity is 0.78dl / g when 30 ℃, AA / AMPS=70 / 30, the same below), 1.6mg of pentasodium diethylenetriaminepentaacetate (50% content, Shanghai Nanxiang Reagent Co., Ltd., the same below), hexadecyltributylphosphonium bromide 1mg (Guangzhou Weber Chemical Co., Ltd. Company, analytically pure), 0.86mg of benzisothiazolinone (Collion Chemical Co., Ltd., the same below), placed in a container and stirred evenly to obtain the product, numbered K1.

Embodiment 2

[0023] 230mg sodium polyepoxysuccinate, 60mg aminotrimethylene phosphonic acid, 16mg acrylic acid and 2-methyl-2'-acrylamido propane sulfonic acid copolymer, 2mg pentasodium diethylenetriaminepentaacetic acid, 1mg formazan Oxymethyltriphenylphosphonium chloride (Guangzhou Weber Chemical Co., Ltd., analytically pure), 0.53 mg of benzisothiazolinone, were placed in a container and stirred evenly to obtain the product, coded as K2.

Embodiment 3

[0025] 240mg sodium polyepoxysuccinate, 67mg aminotrimethylene phosphonic acid, 14mg acrylic acid and 2-methyl-2'-acrylamidopropanesulfonic acid copolymer, 1.6mg pentasodium diethylenetriaminepentaacetic acid, 1mg ten Dialkyltriphenylphosphonium bromide (Guangzhou Weber Chemical Co., Ltd., analytically pure) and 1.1 mg of benzisothiazolinone were placed in a container and stirred evenly to obtain the product, coded K3.

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PUM

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Abstract

The invention relates to a reverse osmosis membrane scale inhibitor, which is characterized in that the composition contains polyepoxysuecinic acid, diethylene triamine pentacetic acid, aminotrimethyl, acrylic acid, 2- methyl-2'-acrylamido propane sulfonic acid copolymers, quaternary phosphonium salts, benzisothiazole morpholone and water. The scale inhibitor has good performance of inhibiting high-concentration and low-concentration calcium scale and good performance of dispersing ferric oxide.

Description

technical field [0001] The invention relates to water treatment technology, more specifically relates to scale inhibitors for reverse osmosis membranes. Background technique [0002] Reverse osmosis technology has developed rapidly in our country and has been widely used in industrial fields such as pharmaceutical production, high-purity water in the electronics industry, drinking water, and chemical production. During the operation of the reverse osmosis system, due to chemical pollution, colloid pollution and microbial pollution, the surface of the reverse osmosis membrane is easily scaled, which will directly affect the normal operation of the reverse osmosis device, and even cause the reverse osmosis membrane to be scrapped. To solve the fouling problem of reverse osmosis, the method of adding antiscalants to the influent is widely used, so the development of antiscalants for reverse osmosis has always been a hot research topic. [0003] A kind of reverse osmosis membra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/08C02F5/14C02F1/44
Inventor 殷冬媛赵旭多文赵勇军赵新
Owner 北京合创同盛科技有限公司
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