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Effect of Hydrogen Peroxide Pre-oxidation on THMFP Removal by Coagulation/DAF Process

Xiaoming Sun

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Abstract

Trihalomethanes(THMs),disinfection by-products,are one kind of carcinogenic substance.The effective way to control the formation of THMs is to remove the trihalomethanes formation potential(THMFP) before adding chlorine.Using hydrogen peroxide before traditional coagulation/dissolved air flotation(DAF) process can reduce the dosage of coagulant(from 170 mg/L to 140 mg/L) and improve the treatment efficiency.Thereby,the THMs generated by follow-up chlorination process are greatly reduced,and the security of drinking water is improved.

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What this paper is about

Trihalomethanes(THMs),disinfection by-products,are one kind of carcinogenic substance.The effective way to control the formation of THMs is to remove the trihalomethanes formation potential(THMFP) before adding chlorine.Using hydrogen peroxide before traditional coagulation/dissolved air flotation(DAF) process can reduce the dosage of coagulant(from 170 mg/L to 140 mg/L) and improve the treatment efficiency.Thereby,the THMs generated by follow-up chlorination process are greatly reduced,and the security of drinking water is improved.

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Available abstract

Trihalomethanes(THMs),disinfection by-products,are one kind of carcinogenic substance.The effective way to control the formation of THMs is to remove the trihalomethanes formation potential(THMFP) before adding chlorine.Using hydrogen peroxide before traditional coagulation/dissolved air flotation(DAF) process can reduce the dosage of coagulant(from 170 mg/L to 140 mg/L) and improve the treatment efficiency.Thereby,the THMs generated by follow-up chlorination process are greatly reduced,and the security of drinking water is improved.

Key concepts: Hydrogen peroxide, Chemistry, Trihalomethane, Chlorine, Coagulation, Water treatment, Advanced oxidation process, Chloramination

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