次氯酸钠对常规水处理工艺消毒副产物的影响研究  

Effect of sodium hypochlorite on disinfection by-products in conventional water treatment process

作　　者：张爽 李润芳 赵江丽 Zhang Shuang;Li Runfang;Zhao Jiangli(Tianjin Tanggu Sino French Water Supply Co. Ltd., Tianjin 300450, China)

机构地区：[1]天津塘沽中法供水有限公司,天津300450

出　　处：《供水技术》2018年第5期9-11,共3页Water Technology

摘　　要：以采用常规处理工艺的水厂为研究对象,考察了使用次氯酸钠消毒工艺后消毒副产物的生成水平,并分析了不同温度范围内有效氯的衰减情况。结果表明:随着温度的升高,次氯酸钠的分解速度加快,在30～35℃下,有效氯含量衰减最大,从10. 09%衰减到8. 45%。出厂水的消毒副产物处于极低的水平,且各工艺点消毒副产物均低于检出限,大大降低了液氯作为消毒剂带来的消毒副产物风险,提高了水质安全。Taking one waterworks with conventional treatment process as a case,the concentration of disinfection by-products after using sodium hypochlorite disinfection process was investigated,and the decay of available chlorine under different temperature ranges was analyzed. The results showed that the decomposition rate of sodium hypochlorite increased with the temperature. At 30 ~ 35 ℃,the effective chlorine decreased from 10. 09% to 8. 45%. The disinfection by-products were at very low level in the treated water,and the contents of each process effluent were lower than the detection limit,which greatly reduced the risk of disinfection by-products caused by liquid chlorine as a disinfectant and improved the water quality safety.

关 键 词：次氯酸钠 消毒副产物 有效氯 

分 类 号：TU991.25[建筑科学—市政工程]