摘要
自来水生产过程滤池要定期反冲洗,滤池反冲洗废水最早一般被直接排放,近年来低成本安全回用滤池反冲洗废水逐渐受到重视。其主要处理回用技术从以直接回用或混凝-沉淀后回用为主的传统技术,逐渐转变为高效安全的膜回收技术。评析滤池反冲洗废水回用技术在实际应用中存在的问题,对回收滤池反冲洗废水提出建议。分析表明饮用水系统滤池反冲洗废水采用膜过滤技术可避免自来水厂出水浊度增加、出水消毒副产物增加和致病微生物增加三大问题。
During the process of drinking water preparation, the sand filters must be backwashed regularly. In the past the filter backwash water （FBWW） was discharged directly. However, it is paid more and more attention to reuse FBWW cheaply and safely in recent years. The technologies of reusing FBWW are updated from traditional one such as direct recirculation or recireulation after coagulation-sedimentation to membrane recovery that is efficient and safe. In this paper problems of reusing FBWW were analyzed and suggestions were given. As a result, membrane recover was recommended to reuse FBWW to avoid worsening of turbidity, disinfection byproducts and pathogenic bacteria.
出处
《四川环境》
2009年第4期102-107,共6页
Sichuan Environment
关键词
滤池反冲洗废水回用
传统处理技术
膜处理技术
消毒副产物
致病微生物
Reuse filter backwash water
traditional techniques
membrane techniques
disinfection byproducts
pathogenic bacteria
