Water treatment fungicide
DAWT·2022-05-09
Introduction
Water treatment fungicides are also known as bactericidal algaecides, sludge strippers or anti-sludge agents. A class of chemicals that can inhibit the growth of bacteria, algae and microorganisms in water to prevent the formation of microbial slime and cause harm to the system. Including oxidative bactericides, such as chlorine, sodium hypochlorite, bleaching powder, ozone, chloramine, etc., non-oxidative bactericides, such as dodecyldimethylbenzyl ammonium chloride, dodecyldimethylbenzyl bromide Ammonium, dithiocyanomethane, etc.; heavy metal compounds, such as mercuric oxide, mercuric chloride, mercuric fluoride, etc.; slime fungicides, such as rosin amine, hydrogen peroxide, biguanide polymers, etc.
Sterilization principle
Hypochlorous acid type fungicides, mainly chlorine and sodium hypochlorite, are hydrolyzed into hypochlorous acid in water. Hypochlorous acid is small in size, uncharged and easy to pass through the cell wall; at the same time, it is a strong oxidant, which can damage the cell membrane, It releases substances such as protein, RNA and DNA, and affects a variety of enzyme systems (mainly the sulfhydryl group of glucose phosphate dehydrogenase is oxidized and destroyed), thereby causing bacterial death. Because its mechanism of action is to sterilize in the form of free hypochlorous acid, it is classified as a hypochlorous acid type fungicide.
Bromine and bromine compounds, similar to the principle of hypochlorous acid type fungicides, hydrolyze in water to generate free hydrogen bromide, hydrogen bromide enters the cell wall and interacts with intracellular proteins, thereby destroying the protein structure and achieving the purpose of sterilization.
Chlorine dioxide, chlorine dioxide has a strong adsorption and penetration ability to the cell wall of microorganisms, can effectively oxidize enzymes containing sulfhydryl groups in cells, and can also quickly inhibit the synthesis of microbial proteins to destroy microorganisms.
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