氯和二氧化氯联合消毒灭菌作用的研究

以配置的水样为研究对象考察了氯与二氧化氯单独及联合灭活大肠杆菌和细菌总数的效果,用Berenbaum公式判断了两种消毒剂联合作用的性质.结果表明,氯2.00mg/L作用30 min可灭活试验水样中大肠杆菌6.18个数量级,二氧化氯0.30 mg/L作用15min、1.50mg/L氯和0.20 mg/L二氧化氯联合作用10 min可以灭活试验水样中大肠杆菌7.18个数量级(100%灭活);2.00 mg/L氯单独作用30 min、0.30 mg/L二氧化氯单独作用15 min、1.50 mg/L氯和0.20 mg/L二氧化氯联合作用10min可将水样中的细菌100%灭活.用Berenbaum公式计算得出氯与二氧化氯联合消毒灭活水样中大肠杆菌时质量浓度比为0.39,灭活水样中细菌总数时的质量浓度比为0.85,因此氯与二氧化氯联合消毒对大肠杆菌和细菌总数具有协同灭活作用.

Study on effect of combined disinfection of chlorine and chlorine dioxide

Saw about the effect of killing E.coli or TBC using either chlorine or chlorine dioxide and the effect when they were used together using the water collocated as the subject to study.The character of combination action was demonstrated by the Beranbaum formula.The result showed that 106.18 of E.coli could be inactivated by 30 min action of 2.00 mg/L chlorine,107.18 of E.coli could be inactivated by 15 min action of 0.30 mg/L chlorine dioxide,10 min action of 1.50 mg/L chlorine and 0.20 mg/L chlorine dioxide;100% TBC could be inactivated by 30 min action of 2.00 mg/L chlorine,15 min action of 0.30 mg/L chlorine dioxide,10 min action of 1.50 mg/L chlorine and 0.20 mg/L chlorine dioxide.The concentration ratio chlorine to chlorine dioxide when used together to kill E.coli was 0.39 calculating with the Beranbaum formula,it was 0.85 for the TBC.So the character of combination action of killing E.coli or TBC was cooperated.