合流制雨水泵站溢流污水消毒试验研究

Study on the Disinfection of the Combined Sewer Overflows

论述了合流制排水系统污水溢流消毒处理的必要性。提出采用粪大肠杆菌群数≤104个/L作为污水消毒的卫生学指标。试验结果表明,达到CSO紧急消毒要求的几种氧化性消毒剂最佳投加量为次氯酸钠30mg/L,次氯酸钙25mg/L,二氧化氯20mg/L(均以有效氯计);二氧化氯>次氯酸钙>次氯酸钠>双氧水。

The necessity of combined sewer overflows disinfection is discussed.The colibacillusoid groups in effluent not more than 104/L is pointed as the hygiene index of disinfection.The result shows that the optimum quantity of several kinds of oxidation disinfectants should be sodium hypochlorine 30 mg/L chloride of lime 25 mg/L and chlorine dioxide 20 mg/L and optimum order should be chlorine dioxide>chloride of lime>sodium hypochlorine>hydrogen peroxide.