给水管壁松散沉积物的形成机制与控制  

Formation Mechanism and Control of Soft Deposit in Drinking Water Distribution System

作　　者：周玲玲[1] 张永吉[2] 叶河秀[2] 王媛[2] 

机构地区：[1]同济大学城市污染控制国家工程研究中心,上海200092 [2]同济大学长江水环境教育部重点实验室,上海200092

出　　处：《中国给水排水》2012年第20期31-34,共4页China Water & Wastewater

基　　金：国家自然科学基金资助项目(51178323;51108329);中国博士后科学基金面上项目(20100480626);苏州市工业指导性计划(应用基础研究)项目(SGZ2012039)

摘　　要：给水管网水质安全一直是研究者关注的热点问题,给水管网水质除了受管壁生物膜和腐蚀物的影响外,生物膜和腐蚀物与水接触处还存在着一层松散结构———管壁松散沉积物。管壁松散沉积物中含有大量的颗粒物、有机物和微生物,由于与管壁结合比较松散,因此比生物膜和腐蚀物更容易从管壁上脱落下来,对水质的影响更大。介绍了松散沉积物的形成规律及组成变化,分析了管壁松散沉积物对水质的影响及其控制方法,并提出了关于管壁松散沉积物今后的研究方向。目前国内外对管壁松散沉积物的研究还不系统,随着对给水管网水质问题认识的提高,在我国开展控制给水管壁松散沉积物的研究是必要的。The safety of water quality in drinking water distribution system is a hot issue concerned by many researchers. The water quality in drinking water distribution system is not only influenced by biofilm and corrosive substances accumulated on pipe wall, but also a soft deposit between the two media and water. The soft deposit is composed of lots of particles, organic matters and microorganisms, and the loose structure makes it easily detached from the pipe wall to contaminate water quality. The formation pathways and composition of soft deposit were introduced, the influence of it on water quality and its con- trol method were analyzed, and the future research field was put forward. Nowadays, the research on soft deposit on drinking water pipe wall is still not systematic at home and abroad. With improvement in un- derstanding of water quality problem in drinking water distribution system, it is necessary to carry out research on soft deposit on drinking water pipe wall in China.

关 键 词：给水管壁 松散沉积物 颗粒物 微生物控制 

分 类 号：TU991.36[建筑科学—市政工程]