城乡统筹供水模式下的管网消毒剂中途补加方式优化试验  

Optimization Test of Halfway Replenishment Method of Pipe Network Disinfectant under the Mode of Urban and Rural Integrated Water Supply

作　　者：方芳 FANG Fang(Shanghai Waterworks Fengxian Co.,Ltd.,Shanghai 201400,China)

机构地区：[1]上海市自来水奉贤有限公司,上海201400

出　　处：《净水技术》2022年第S01期62-66,238,共6页Water Purification Technology

基　　金：上海市扬帆计划(20YF1401200);供水管网增压泵站消毒方式的优化与应用(113200067)。

摘　　要：自上海普及城乡供水集约化以来,供水企业面临小流量、大区域供水下末梢消毒效果难保证的技术问题,增压泵站的消毒剂中途补加方式亟需优化。文中通过在夏季对上海奉贤区海湾泵站开展为期3个月的生产性试验,对比单独补氯和同时补氯、补氨的消毒模式下沿程余氯衰减情况。结果表明:同时补氯、补氨能够将最不利管线末梢的总氯和游离氯质量浓度分别由0.04 mg/L和0.02 mg/L提高至0.21 mg/L和0.09 mg/L,同时龙头水中消毒副产物、亚硝酸盐等相关指标均能够满足上海市生活饮用水水质标准,是一种较理想的消毒剂中途补加方式。With the implement of integrated urban-rural water supply in Shanghai,water supply enterprises are faced with technical problem that the disinfection effect of water supply ends in small flows and large areas is difficult to guarantee,and the way of midway replenishment of disinfectant in booster pump stations needs to be optimized.In this study,a 3-month productive test was carried out at the Haiwan pumping station in Fengxian District,Shanghai in summer,and residual chlorine attenuation along the process was compared under the disinfection modes of single chlorine supplementation and simultaneous chlorine supplementation and ammonia supplementation.Results showed that total chlorine and free chlorine at the end of the most unfavorable pipeline could be increased from 0.04 mg/L and 0.02 mg/L to 0.21 mg/L and 0.09 mg/L,respectively,by supplementing chlorine and ammonia at the same time.At the same time,relevant indicators such as disinfection by-products and nitrite in the tap water can meet the Shanghai drinking water quality standards,and it is an ideal way to add disinfectants midway.

关 键 词：城乡统筹 供水管网 游离氯消毒 氯氨消毒 消毒副产物 

分 类 号：TU991[建筑科学—市政工程]