Composite non-oxidizing biocide-algicide for treating circulating cooling water

Abstract

The invention discloses a composite non-oxidizing biocide-algicide for treating circulating cooling water. The composite non-oxidizing biocide-algicide is prepared from the following components by mass: 25-30% of isothiazolinone, 10-20% of quaternary ammonium salt compound, 5-8% of glutaraldehyde, 0.2-0.5% of copper sulfate and the balance of deionized water. The composite non-oxidizing biocide-algicide provided by the invention not only has excellent biocidal inhibition functions of fungi, microorganisms and legionella, can simultaneously give consideration to two effects of sterilization andalgae killing, is completely biodegradable, has the advantages of less dosage and greatly reduced treatment costs in comparison with a treatment method of alternately and independently adding a non-oxidizing bactericide and an oxidizing bactericide, also has cell protein bonds capable of destroying microbial fungi, has a cell lysis function, and can destroy cell structures and generate a chamberresistance effect, thereby effectively avoiding a problem of chemical agent resistance of fungi and algae caused by single killing way of single chemical agent.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a composite non-oxidative bactericide and algicide for treating circulating cooling water. Background technique [0002] During the recycling process of industrial cooling water, because the water body has a temperature (32°C~37°C) and nutrients suitable for the growth and reproduction of microorganisms, fungi, Legionella, and algae, it will cause microorganisms, fungi, Legionella, and Algal blooms can cause microbial corrosion and fouling hazards to cooling equipment. [0003] At present, the main method to control the proliferation of microorganisms, fungi, Legionella and algae in circulating cooling water is to alternately add non-oxidizing bactericides and oxidizing bactericides to the water body. Non-oxidizing fungicides have better killing and inhibiting effects on single-celled microorganisms and fungi, and oxidizing fungicides have better killing and ...

AI Technical Summary

Problems solved by technology

[0004] However, this control method of alternately adding non-oxidizing fungicides and oxidizing fungicides has the problem of excessive dosage. The dosage of fungicide needs to reach 50~100mg / L

Moreover, this control method of alternately adding non-oxidizing fungicides and oxidizing fungicides cannot effectively kill and inhibit single-celled microorganisms, bacteria and algae at the same time.

[0005] Moreover, in a high-concentration water quality system, if the water quality stays for too long, a single dose of fungicide can easily produce microorganisms, and the fungi will develop drug resistance, which will lead to an increase in the subsequent dosage and a decrease in the bactericidal effect.

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