普通快滤池气水反冲改造技术研究与开发  

Development of an Air-water Backwashing Technology Used in Conventional Rapid Sand Filters

作　　者：王如华[1] 叶新[1] 陆彬[1] 蔡报祥[1] 李琴[2] 李新华[2] 

机构地区：[1]上海市政工程设计研究总院<集团>有限公司,上海200092 [2]苏州市自来水有限公司,江苏苏州215002

出　　处：《中国给水排水》2014年第5期45-48,共4页China Water & Wastewater

摘　　要：针对普通快滤池过滤周期短、反冲洗效果欠佳、反冲洗能耗大的问题,研发出一种能使普通快滤池实现气水反冲洗的拱形断面配水配气管。通过研究该管配水配气的均匀性以及不同反冲洗方式对滤速、过滤周期、滤前(后)水压的影响,证明该管能够实现均匀可靠的反冲洗配水配气,并且通过优化反冲洗过程,在保证反冲洗效果的前提下,能够有效节约反冲洗水量。该拱形断面配水配气管既适用于普通快滤池的改造,同时也能用于其他气水反冲洗滤池。To address problems in conventional rapid sand filters, such as short filtering period, poor backwashing efficiency and high energy consumption, a semi-elliptical air and water distribution pipe was designed to realize air-water backwashing in a conventional rapid sand filter. The evenness of air/water distribution and the effects of various backwashing modes on filtering velocity, filtering period and water head loss were investigated. The results indicated that the evenness and reliability of air/water distribution improved when using semi-elliptical pipes in rapid sand filter. The backwashing process was optimized for the best backwashing performance. The semi-elliptical air and water distribution pipe can be used for reconstruction of conventional rapid sand filters and other air-water backwashing filters.

关 键 词：普通快滤池 气水反冲洗 拱形断面配水配气管 改造 

分 类 号：TU991.24[建筑科学—市政工程]