城市污水再生回用于景观水体水质安全保障技术  

TECHNIQUES FOR WATER QUALITY SECURITY ENSURING OF RECLAIMED WATER USED IN LANDSCAPE WATER

作　　者：何安琪[1] 何苗[1] 施汉昌[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《环境工程》2006年第1期22-23,32,共3页Environmental Engineering

基　　金：国家"十五"科技攻关项目(2003BA809B0402)

摘　　要：研究了再生水回用于景观水体时可能存在的水质安全性问题,并提出了保障再生水安全回用的处理工艺。研究表明,城市污水再生水回用于景观水体时,存在着卫生学安全、毒理学安全、富营养化以及底质二次污染等危害。为了满足景观水体的水质标准,需要重点控制的水质指标有病原性微生物、有毒有害有机物、重金属、氮磷植物性营养物质、悬浮固体。以城市污水厂二级出水作为再生水原水时,推荐采用的工艺有:二级处理混凝沉淀过滤消毒、二级处理过滤活性炭吸附消毒以及二级处理膜处理消毒工艺。The risks of reclaimed water used in landscape water were analyzed, and treatment techniques for water safely reclamation was proposed.The result shows that the main risk comes from the pathology pollutants,the toxin pollutants,the eutrophication pollutants and the secondary pollution from sullage when municipal wastewater is reclaimed for landscape water.The major water quality standard including pathogenic microorganism,toxic organism,the heavy metal, the plant nutrients, such as N and P, and SS.The recommended techniques include:secondary treatment-coagulation-filtration-disinfection, secondary treatment-activate carbon adsorption-disinfection, secondary treatment-membrane processes-disinfection.

关 键 词：城市污水 再生回用 景观用水 水质安全 

分 类 号：X703[环境科学与工程—环境工程] U298[交通运输工程—交通运输规划与管理]