悬浮填料滤池取代二沉池的效果研究  

Study on Efficiency of Suspended Medium Filter Replacing Secondary Sedimentation Tank

作　　者：王少勇[1] 陈洪斌[1] 钱靓[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国给水排水》2008年第3期42-45,共4页China Water & Wastewater

基　　金：科技部国际合作重点资助项目(2006DFA92690)

摘　　要：悬浮填料滤池作为传统二沉池的代用构筑物具有占地面积少、出水水质好、冲洗简便且具有一定后续生物氧化作用等优点。在填料层高度为4m、填料比表面积为162m2/m3、表面负荷为2.35～2.89m3/(m2.h)的条件下,滤池出水SS可达到《生活杂用水水质标准》(CJ/T48—1999)及《城镇污水处理厂污染物排放标准》(GB18918—2002)的一级标准。在气洗强度为10.26～15.38m3/(m2.h)、冲洗时间为15min的条件下,滤池在反冲后1～2h内可恢复过滤能力,滤池稳定运行期长达8～13d。As a substitute for traditional secondary sedimentation tank, suspended medium filter has advantages such as less land occupancy area, good effluent quality, easy backwashing and subsequent bio-oxidation. When the height of media layer is 4 m, the specific surface area of media is 162 m^2/m^3 and the surface load is 2.35 to 2.89 m^3/（m^2·h）, the concentration of suspended solids in the effluent can achieve the requirement of Miscellaneous Domestic Water Quality Standard （ CJ/T 48 - 1999 ） and first level criteria specified in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant （ GB 18918 - 2002）. When the intensity of the air washing is 10.26 to 15.38 m^3/（ m^2 · h）, and the backwashing time is 15 minutes, the filter can recover its capability after backwashing of 1 to 2 hours. The stable working period of the filter is 8 to 13 days.

关 键 词：悬浮填料滤池 二沉池 固液分离 反冲洗 

分 类 号：X703[环境科学与工程—环境工程]