12 times super concentrated scale inhibition and dispersion agent special for reverse osmosis membranes

A technology of scale inhibitor dispersant and reverse osmosis membrane, applied in semipermeable membrane separation, permeation/dialysis water/sewage treatment, membrane technology, etc. The effect of high and low concentration calcium scale performance

Inactive Publication Date: 2012-06-13
天津通悦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantages of these two antiscalants are that the formula contains more organic phosphine, and the reverse osmosis system must strictly control the temperature and pH

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 250mg sodium polyepoxysuccinate (content 30), 67mg amino trimethylene phosphoric acid (content 30), 12mg acrylic acid and 2-methyl-2'-acrylamidopropanesulfonic acid copolymer (active component content 50, Intrinsic viscosity at 30°C is 0.78dl / g, AA / AMPS=70 / 30), 1.6mg of pentasodium diethylenetriaminepentaacetate (content 50), 1mg of hexadecyltributylphosphonium bromide, benzo 0.86 mg of isothiazolinone was placed in a container and stirred evenly to obtain the product, coded as K1.

Embodiment 2

[0018] 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, 0.53 mg of benzisothiazolinone, placed in a container and stirred evenly to obtain the product, coded as K2.

Embodiment 3

[0020] 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, 1.1 mg of benzisothiazolinone, placed in a container and stirred evenly to obtain the product, coded as K3.

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Abstract

The invention provides a 12 times super concentrated scale inhibition and dispersion agent special for reverse osmosis membranes. The invention is characterized in that the composition contains a polyepoxysuccinic acid salt, diethylene triamine pentacetic acid, amino trimethylene phosphonic acid, a copolymer of acrylic acid and 2-methyl-2'-acrylamido propane sulfonic acid, a quaternary phosphonium salt, benzoisothiazolinone and water. And the sodium polyepoxysuccinicate, the amino trimethylene phosphonic acid, the copolymer of acrylic acid and 2-methyl-2'-acrylamido propane sulfonic acid, the diethylene triamine pentacetic acid, the quaternary phosphonium salt and the benzoisothiazolinone are in a part ratio of 55-90:9-35:0.5-10:0.1-6:0.1-5:0.1-10. The scale inhibition and dispersion agent of the invention has good high and low concentration calcium scale inhibiting performance as well as iron oxide-dispersing performance. If diethylene triamine pentacetic acid, a quaternary phosphonium salt and benzoisothiazolinone are added into a reverse osmosis membrane scale inhibitor composed of a copolymer, the scale inhibition performance of the scale inhibitor can be substantially enhanced.

Description

technical field [0001] The invention relates to a reverse osmosis membrane water treatment technology, in particular to a 12-fold super concentrated anti-scale dispersant for reverse osmosis membranes. Background technique [0002] Reverse osmosis is a membrane separation technology that originated in the 1960s and has been widely used in water treatment. In some coastal areas where fresh water resources are scarce, reverse osmosis is used for seawater desalination to provide fresh water for people's production and life. At the same time, as a high-purity water preparation technology, reverse osmosis can meet the water requirements of semiconductor, microelectronics, electric power, chemical industry, medicine and other fields. In today's increasingly scarce water resources, reverse osmosis has also been widely used in wastewater treatment as advanced wastewater treatment technology and water resource reuse technology. [0003] In the reverse osmosis water treatment proces...

Claims

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Application Information

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IPC IPC(8): B01D65/08C02F5/14C02F1/44
Inventor 胡艳平
Owner 天津通悦科技有限公司
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