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Water treatment medicament with functions of inhibiting corrosion and scale and killing microbes

A technology for corrosion and scale inhibition and water treatment, applied in the field of water treatment, can solve problems such as damage to water quality, container corrosion damage, etc., and achieve good corrosion and scale inhibition effects.

Active Publication Date: 2012-10-17
CHENGDU ROSUN DISINFECTION PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, in various water systems, there are inevitably various sources of pollution, especially some microorganisms such as bacteria and algae, which can multiply and spread on a large scale, seriously damage the water quality, and cause great corrosion damage to the containers of the storage water system

Method used

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  • Water treatment medicament with functions of inhibiting corrosion and scale and killing microbes
  • Water treatment medicament with functions of inhibiting corrosion and scale and killing microbes
  • Water treatment medicament with functions of inhibiting corrosion and scale and killing microbes

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Example 1: Add 33.7g maleic anhydride and 25.2g Bropol to a four-necked flask equipped with a thermometer, a pH meter, a condenser, a stirrer and a dropping funnel, and mix well. Add 40ml of deionized water to dissolve; slowly add sodium hydroxide solution with a mass concentration of 30% under stirring to adjust the pH of the reaction solution to 6~8; heat in a water bath to 40~60°C, and hydrolyze maleic anhydride for 1~4 hours Add 8.02g of sodium tungstate as a catalyst, then add 30% hydrogen peroxide with a total mass concentration of 47.0g in 5 batches, the time interval for adding hydrogen peroxide in each batch is 30 minutes, and use 30% hydrogen peroxide with a mass concentration after adding each batch of hydrogen peroxide Sodium oxide solution controls the pH of the reaction solution to be 5~6, and controls the reaction temperature to be 60~70°C. After all the hydrogen peroxide is added, react for 1~3 hours to carry out the epoxidation reaction of maleic anhydri...

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PUM

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Abstract

The invention discloses a water treatment medicament with functions of inhibiting corrosion and scale and killing microbes. The water treatment medicament is a polyepoxysuccinic acid / bronopol copolymer, wherein polyepoxysuccinic acid serves as a main body, and then is subjected to polymerization after being grafted with bronopol so as to obtain the polyepoxysuccinic acid / bronopol copolymer, the copolymer does not contain phosphorus, can be biodegradable, has a very good effect of inhibiting the corrosion and the scale, and has certain effect of killing the microbes due to the existence of oxidising bromine atom. The polyepoxysuccinic acid / bronopol copolymer prepared by using the method disclosed by the invention has the scale inhibition rate on calcium carbonate and corrosion inhibition rate on carbon steel similar to those of the polyepoxysuccinic acid, so that the effects of scale inhibition and corrosion inhibition of the water treatment medicament can be ensured.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a water treatment agent with both corrosion and scale inhibition and biocidal effects and a preparation method thereof. Background technique [0002] Circulating cooling water treatment technology plays a very important role in water saving, energy saving and other issues, but at the same time, the use of circulating water treatment chemicals also has a certain impact on the environment. In the cooling water system, in various occasions where the water temperature is higher than the ambient temperature, the scaling of calcium carbonate and other inorganic salts will bring serious consequences. In recent years, in the field of water treatment, the application of alkaline water treatment technology that does not adjust the pH value is increasing. Among them, the addition of corrosion and scale inhibitors, low-phosphorus, and phosphorus-free formulations are more...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/10C02F1/50
Inventor 余京儒李菠
Owner CHENGDU ROSUN DISINFECTION PHARMA
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