Peracetic acid is often used to remove pathogenic germs in the last step before treated wastewater is discharged into the environment.
Hydrogen peroxide is increasingly replacing chlorine as a standard pretreatment to prevent hydrogen sulfide from entering wastewater treatment facilities, as sulfides cause unpleasant odor and corrode equipment. Hydrogen peroxide produces no harmful by-products and improves the water’s dissolved oxygen content, which enables the breakdown of organic materials by beneficial aerobic bacteria.
Peracetic acid is an attractive solution because the efficient reagent does not leave harmful by-products behind. A strong biocide, peracetic acid is often used to remove pathogenic germs in the last step before treated wastewater is discharged into the environment. It combines a “high” environmental safety score with a “high” rating for its effectiveness as a biocide for fluids.
Oxidation processes are also cost-effective: existing chlorine infrastructure can be converted to peracetic acid by retrofitting with little capital expenditure required and there is little to no cost penalty in using hydrogen peroxide instead of chlorine. WW
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