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High-efficiency composite bactericide for circulating water system and preparation method thereof

A compound fungicide and high-efficiency technology, applied in the directions of fungicides, botanical equipment and methods, biocides, etc., can solve the problems of incapable of sharing chlorophenol biocides, reducing the biocidal effect of quaternary ammonium salts, and increasing water treatment costs, etc. To achieve the effect of not easy drug resistance, good synergism, and fast killing speed

Active Publication Date: 2016-08-24
SHANDONG TIANQING TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned problems existing in the prior art, the purpose of this invention is to provide a kind of high-efficiency compound fungicide for circulating water system, to solve the existing technology products in circulating water a large number of Ca 2+ , Mg 2+ 、Al 3+ and Fe 2+ When metal ions are used, the biocidal effect of quaternary ammonium salts will be reduced, so they cannot be used together with chlorophenol biocides, and should not be used together with anionic surfactants. Long-term use will easily cause microbial resistance, increase the dosing concentration, increase water treatment costs, and easily Foaming, often used together with defoamers, not conducive to industrial production, easy to cause environmental pollution and other problems

Method used

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  • High-efficiency composite bactericide for circulating water system and preparation method thereof
  • High-efficiency composite bactericide for circulating water system and preparation method thereof
  • High-efficiency composite bactericide for circulating water system and preparation method thereof

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Embodiment 1

[0019] The high-efficiency composite bactericide of the present invention has the following ingredients by weight percentage: 15% glutaraldehyde, 42% quaternary phosphonium salt, 11% isothiazolinone, 24% deionized water, and 8% dithiocyanomethane. Wherein the quaternary phosphonium salt is tetrakis hydroxymethyl phosphonium sulfate and tetradecyl tributyl phosphonium chloride, the mass ratio of the two is 1.7:2

[0020] Its preparation method is carried out according to the following steps successively:

[0021] (1) Add glutaraldehyde and tetrakis hydroxymethyl phosphonium sulfate to the reaction kettle and stir for 5 minutes at normal temperature;

[0022] (2) in the mixed solution of tetradecyltributylphosphonium chloride and isothiazolinone step (1), stir for 10 minutes;

[0023] (3) Finally, add dithiocyanomethane and deionized water into the mixed solution obtained in step (2), and stir for 10 minutes to obtain the finished product.

[0024] The use effect of the presen...

Embodiment 2

[0039] The high-efficiency composite bactericide of the present invention comprises the following ingredients by weight percentage: 16% glutaraldehyde, 44% quaternary phosphonium salt, 15% isothiazolinone, 20% deionized water and 5% dithiocyanomethane. Wherein the quaternary phosphonium salt is tetrakis hydroxymethyl phosphonium sulfate and tetradecyl tributyl phosphonium chloride, the mass ratio of the two is 1.7:2

[0040] Its preparation method is carried out according to the following steps successively:

[0041] (1) Add glutaraldehyde and tetrakis hydroxymethyl phosphonium sulfate to the reaction kettle and stir for 10 minutes at normal temperature;

[0042] (2) in the mixed solution of tetradecyltributylphosphonium chloride and isothiazolinone step (1), stir for 15 minutes;

[0043] (3) Finally, add dithiocyanomethane and deionized water into the mixed solution obtained in step (2), and stir for 15 minutes to obtain the finished product.

[0044] The use effect of the ...

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Abstract

The invention discloses an efficient composite germicide for a circulating water system, which is composed of the following components: 15-18% of glutaraldehyde, 42-49% of quaternary phosphonium, 11-17% of isothiazolinone, 20-30% of deionized water, and 5-8% of dithiocyano-methane. The germicide has an extremely excellent bactericidal effect, can be used in circulating cooling water under high pH value conditions, has a good killing effect on heterotrophic bacteria, sulfate reducing bacteria and algae, and especially has an obvious killing effect on heterotrophic bacteria; and the germicide is high in killing speed, strong in killing force, and low in toxicity.

Description

technical field [0001] The invention belongs to the technical field of industrial circulating water treatment, and relates to a high-efficiency composite fungicide and a preparation method thereof. Background technique [0002] Bactericide is a very common water treatment chemical, mainly used in circulating cooling water systems. Due to the special ecological environment of the circulating cooling water system, microorganisms are easy to multiply in it, and at the same time, the large-scale reproduction of microorganisms will also produce a large amount of microbial slime in the circulating water system. The large-scale reproduction of microorganisms and the slime produced during the reproduction will sharply deteriorate the quality of cooling water. At the same time, the formed slime is deposited in the cooling tower and heat exchange equipment, which isolates the protective effect of the chemical on the metal and prevents the chemical from playing its due role. corrosion...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N57/34A01P1/00A01P3/00A01P13/00C02F1/50A01N43/80A01N35/02A01N47/48
Inventor 胡新霞王俊明苗吉宾黄凯梁清雷王金明柴斌刘晓民高云峰郑萍
Owner SHANDONG TIANQING TECH DEV
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