单过硫酸氢钾复合粉用于饮用水消毒的效果研究  

Study on the efficacy of potassium monopersulfate compound in drinking water disinfection

作　　者：敖秀玮 李豪杰[1] 刘文君[1] 余京儒 

机构地区：[1]清华大学环境学院,北京100084 [2]成都润兴消毒药业有限公司,成都610100

出　　处：《给水排水》2017年第2期36-40,共5页Water & Wastewater Engineering

基　　金：科技部国际合作项目(2015DFG71210);国家水体污染控制与治理科技重大专项(2012ZX07404-002);国家自然科学基金重大项目(51290284)

摘　　要：向受试水样中分别投加单过硫酸氢钾复合粉和次氯酸钠,比较了复合粉和氯消毒的消毒副产物生成量。同时,就该复合粉对常见金属的腐蚀性和其有效成分的持久性进行研究。试验结果表明,单过硫酸氢钾复合粉投加量达1.0mg/L以上时,对大肠杆菌有明显的杀灭作用。当复合粉投加量为2.0mg/L,作用时间为30min时,其对大肠杆菌的灭活率为99.99%。其在试验条件下对枯草芽孢杆菌的芽孢悬液无杀灭作用。复合粉对实际水样的消毒效果较好,对于田村山水厂活性炭池出水,投加量达到1mg/L时,HPC计数低于500CFU/mL。对比氯消毒,复合粉消毒产生的三卤甲烷(THMs)和卤乙酸(HAAs)的含量更低。另外,复合粉溶液对常见金属和给水管材基本无腐蚀或者呈中度腐蚀,溶液中的有效成分具有较强的持久性。The production of disinfection by-products （DBPs） of the new disinfectant and chlo- rine was compared by adding the compound and sodium hypochlorite respectively to the tested wa- ter samples. The corrosiveness of the compound on common metals and the persistence of the its active ingredients were also investigated. The results showed that potassium monopersulfate com- pound demonstrated effective bactericidal activity against E. coli at dosage greater than 1.0 mg/L. At a dosage of 2 mg/L and contact time of 30 min, the kill-rate of the compound against E. coli was 99. 99~. The compound had no efficacy in killing Bacillus subtilis var. niger at the tested con- ditions. The compound presented good disinfection efficacy for real water. When the disinfectant was applied to the effluent of GAC in Beijing Tiancuishan Drinking Water Plant at dosage of 1 rag/L, the HPC value was lower than 500 CFU/mL. Compared with chlorination, compound generated much less trihalomethanes （THMs） and haloacetic acids （HAAs）. In addition, its solution was not corro- sive or only moderately corrosive to common metals and water pipes. The active ingredients of the potassium monopersulfate compound also showed long persistence.

关 键 词：单过硫酸氢钾 消毒 消毒副产物 腐蚀性 持久性 

分 类 号：TU991.25[建筑科学—市政工程]