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Reverse osmosis scale inhibitor

A scale inhibitor and reverse osmosis technology, applied in the field of industrial water supply treatment and advanced wastewater treatment, can solve the problems of single performance and low scale inhibition performance, and achieve excellent scale inhibition performance, good sterilization effect and good compatibility.

Inactive Publication Date: 2011-04-13
ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the technical problem that existing reverse osmosis scale inhibitors have low scale inhibition performance and single performance, and provides a composite scale inhibitor for reverse osmosis systems

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0014] Get 28 kilograms of maleic acid-acrylic acid copolymer, 5 kilograms of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), 1 kilogram of isothiazolinone, 6 kilograms of urotropine and 65 kilograms of water Mix and stir evenly to make a reverse osmosis antiscalant containing 40 kg of active ingredients.

Embodiment 2

[0016] Get 20 kilograms of maleic acid-acrylic acid copolymer, 10 kilograms of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), 1 kilogram of isothiazolinone, 9 kilograms of urotropine and 65 kilograms of water Mix and stir evenly to make a reverse osmosis antiscalant containing 40 kg of active ingredients.

Embodiment 3

[0018] Get 24.8 kilograms of maleic acid-acrylic acid copolymers, 8 kilograms of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), 1.2 kilograms of isothiazolinones, 6 kilograms of urotropine and 65 kilograms of water Mix and stir evenly to make a reverse osmosis antiscalant containing 40 kg of active ingredients.

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Abstract

The invention belongs to the technical fields of industrial feed water treatment and advanced wastewater treatment and relates to a reverse osmosis scale inhibitor. The scale inhibitor comprises the following components by weight percent: 50-70% of maleic acid-acrylic acid copolymer, 10-25% of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), 1-5% of isothiazolinone and 8-20% of urotropin. The scale inhibitor provided by the invention has high scale inhibition performance, is suitable for water with high hardness, contains bactericidal ingredients so that bacteria and algae can not propagate on the membrane and has various functions of inhibiting bacteria, corrosion and scale.

Description

technical field [0001] The invention relates to the technical field of industrial water supply treatment and advanced wastewater treatment, and relates to a reverse osmosis scale inhibitor. Background technique [0002] With the advancement of membrane science and technology, reverse osmosis water treatment technology has been widely used in electric power, food, electronics, and chemical industries, and has a wide range of applications in the fields of advanced treatment of industrial water supply and sewage reuse. During the long-term operation of reverse osmosis equipment, due to the high concentration of various ions in the concentrated water, it is easy to generate scale and breed bacteria and algae, which will cause membrane blockage and affect the stable operation of the reverse osmosis system. Membrane fouling and the growth of bacteria and algae can reduce the water production rate of equipment and cause energy waste. In severe cases, membrane elements must be repla...

Claims

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Application Information

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IPC IPC(8): C02F5/14
Inventor 田彩利李晓辉牛瘐鑫张彦河李海花
Owner ENERGY RESOURCES INST HEBEI ACADEMY OF SCI
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