Oxidative bactericidal algicides are biocides with strong oxidizing properties and have a strong killing effect on microorganisms in water. According to the China Pesticide Network , the oxidative biocides commonly used in circulating cooling water systems are compounds with oxidizing properties such as chlorine compounds, peroxides and bromine-containing compounds. Such compounds generally have the advantages of rapid sterilization and algae killing, high broad spectrum, low processing cost, environmental protection, and microbial resistance to drug resistance. The inadequacy is that the organic matter and the reducing substance in the water are greatly affected, the chemical time is short, and the pH value of the water is also greatly affected, and at the same time, the dispersion penetration and the peeling effect are poor.
The halogen elements chlorine, bromine and iodine are all good oxidizing fungicides. The chlorine source is wide, the price is low, the use is convenient, the sterilization effect is good, and it can be used together with many water treatment agents without mutual interference or interference, and has little environmental pollution, and is widely used as a fungicide for microorganisms for industrial and domestic use. Large circulating cooling water systems use liquid chlorine, and the cooling water system with less usage is usually sodium hypochlorite or bleaching powder.
Oxidizing fungicides commonly used in the oxidative bactericidal algaecide are: liquid chlorine, chlorine dioxide (CLO2), peracetic acid, bromochlorohydantoin, sodium dichloroisocyanurate (euchlorine), three Chloroisocyanuric acid (strong chlorin).
Oxidizing fungicide bactericidal range The bactericidal action of chlorine is the production of hypochlorous acid in the molecular state of chlorine. The hypochlorous acid molecule can penetrate the microbial cell membrane and protein to form a stable N-CL bond, making reductase necessary for respiration. Decreased or lost activity, at higher concentrations will destroy the cell wall. The higher the proportion of chlorine added to the water in the form of hypochlorous acid, the better the bactericidal effect.
Chlorine treatment is very effective, and protozoa (such as paramecium and ciliate) and rotifers in the water are quickly killed after chlorine. Algae are more likely to be killed by chlorine than bacteria, and chlorine concentrations of up to 1 mg/L kill most algae. The chlorine concentrations lethal to cyanobacteria and diatoms were 0.5-1.01 mg/L and 0.1-1.01 mg/L, respectively.
Want to know more about the fungicide manufacturers and pesticide prices in pesticide products, please visit the China Pesticide Network for details.
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