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How to choose water treatment sterilization algaecide?


The bactericidal algaecide commonly used in water treatment is generally classified into an oxidative sterilizing (disinfecting) algicide and a non-oxidizing bactericidal algicide.


Oxidative sterilization (disinfection) algicide

1 Introduction

An oxidative bactericidal algicide is an agent that inactivates bacteria by inactivating the active enzymes in the bacteria or directly oxidizing the bacteria with strong oxidizing properties. General oxidizing biocides can be used as disinfectants!

2 commonly used oxidative bactericidal algaecide

At present, the basic mechanism of action of oxidizing biocides is hypochlorite type bactericide (for example, chlorine, sodium hypochlorite, chlorine compounds such as chlorine ingot), bromine and bromine compounds, chlorine dioxide, ozone and the like.

3 mechanism of action

Hypochlorous acid type fungicide: mainly chlorine gas and sodium hypochlorite, hydrolyzed into hypochlorous acid in water, hypochlorous acid is small in volume, uncharged, easy to pass through the cell wall; at the same time, it is a strong oxidant, which can damage the cell membrane. Releases substances such as proteins, RNA, and DNA, and affects a variety of enzyme systems (mainly the sulfhydryl group of phosphoglucose dehydrogenase is destroyed by oxidation), thereby causing the bacteria to die. Because its mechanism of action is sterilized by 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, hydrolyzed in water to form free hydrogen bromide, hydrogen bromide enters the cell wall, and interacts with intracellular proteins, thereby destroying the protein structure and achieving sterilization purposes.

Chlorine Dioxide: Chlorine dioxide has strong adsorption and penetration ability to the microbial cell wall, can effectively oxidize the enzyme containing sulfhydryl groups in the cells, and can quickly inhiBIT the synthesis of microbial proteins to destroy microorganisms.


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