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Composite water sterilizing disinfectant

A bactericide and algaecide, compound technology, applied in the field of bactericide and compound bactericide and algaecide, can solve the problem of rust on the tube wall of carbon steel heat exchangers in circulating cooling water, failure of corrosion and scale inhibitors, water System corrosion enhancement and other issues, to achieve high stability, low toxicity, strong killing and inhibition effect

Inactive Publication Date: 2006-11-01
SHANGHAI WANSEN WATER TREATMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once a large amount of microbial slime is generated, the water quality will deteriorate rapidly, and the corrosion and scale inhibitors will fail
[0003] Currently commonly used oxidative biocides are generally strong oxidants, which have strong ability to kill bacteria and algae and are cheap, but they have the risk of carcinogenicity, and will also reduce the pH value of water, which will increase the corrosion of the water system. Therefore, it will bring a lot of side effects when used, thus limiting its scope of use
[0004] The chemical used for the treatment of industrial circulating water systems with polyphosphate as the main formula is also a commonly used biocide. Although its use can greatly reduce the serious corrosion and clogging of heat exchanger equipment, it can make the circulating cooling water Rust and pitting on the carbon steel heat exchanger tube wall (see Industrial Water Treatment, 1996(3), 32)

Method used

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  • Composite water sterilizing disinfectant

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Experimental program
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Effect test

Embodiment Construction

[0021] 1. the preparation of compound type bactericidal algicide of the present invention

[0022] Weigh (agent 1) according to the following ratio:

[0023] Polyol phosphate: 25%;

[0024] Isothiazolinone: 35%;

[0025] Lauryldimethylbenzylammonium chloride: 40%.

[0026] Or alternatively, take by weighing (agent 2) according to the following proportioning ratio:

[0027] Polyol phosphate: 30%;

[0028] Isothiazolinone: 35%;

[0029] Lauryldimethylbenzylammonium chloride: 35%.

[0030] Mix isothiazolinone and dodecyldimethylbenzyl ammonium chloride uniformly first, then add polyol phosphate, mix well, and remove impurities for later use.

[0031] 2. Application of the compound type bactericide and algicide of the present invention

[0032] Add the compound bactericide and algicide prepared above in the present invention into the industrial circulating cooling water system, and control the concentration at 50-300 mg / L, divide it into multiple concentrations, and test th...

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PUM

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Abstract

A composite water biocide consists of polyol phosphate 20-30wt%, isothiazolinone 30-50wt% and dodecyl dimethyl benzyl 30-50wt%. It has better broad-spectrum bacterial, inhibition and corrosion-resistant performances and is convenient to store.

Description

technical field [0001] The invention belongs to the fields of chemical industry and environmental protection, and discloses a bactericide and algicide. Furthermore, the invention relates to a composite bactericide and algaecide which has the effects of sterilizing algae and inhibiting corrosion. Background technique [0002] In various industrial water systems, it is often seen that a large number of microorganisms grow and reproduce, causing corrosion and accidents of metal equipment in the water system, affecting the normal operation of production. The proliferation of microorganisms will also cause a large amount of microbial slime to deposit on the surface of the heat exchanger tubes in the circulating water, reducing the effect. Once a large amount of microbial slime is generated, the water quality will deteriorate rapidly, and the corrosion and scale inhibitors will fail. [0003] Currently commonly used oxidative biocides are generally strong oxidants, which have str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/50
Inventor 沈志昌
Owner SHANGHAI WANSEN WATER TREATMENT CO LTD
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