两种工艺对污水再生水中微量有机物的去除效果  

Removal efficiencies of organic micropollutants in wastewater-based reclaimed water by two different treatment processes

作　　者：周海东[1] 黄霞[1] 王晓琳[2] 高密军[2] 文湘华[1] 

机构地区：[1]清华大学环境科学与工程系环境模拟与污染控制国家重点联合实验室,北京100084 [2]北京科技大学土木与环境工程学院,北京100083

出　　处：《中国环境科学》2009年第8期816-821,共6页China Environmental Science

基　　金：国家自然科学基金资助项目(20721140019)

摘　　要：以20种微量有机污染物为目标物,针对北京市2个再生水厂的不同工艺,系统地考察了污水再生水中目标化合物的去除效果,并采用重组酵母雌激素活性筛检法(YES法)对再生水中雌激素活性进行评价.结果表明,超滤(UF)+臭氧(O3)氧化处理工艺可有效地去除微量有机污染物,出水中雌二醇当量浓度(EEQ)低于YES法检出范围.A2/O+膜生物反应器(MBR)+反渗透(RO)处理工艺对微量有机污染物有很高的去除能力,出水中可检测出的目标化合物较少.2种工艺均可降低再生水的环境风险,保障其使用安全。Removal efficiencies of organic micropollutants in wastewater-based reclaimed water by two water reclamation plants （WRPs） with different treatment processes in Beijing,China were investigated. Target compounds consisted of twenty kinds of micropollutants belonging to different groups. Besides, the estrogenicity of samples were evaluated by modified recombinant yeast estrogen screen （YES）. The process of ozonation combined with ultrafiltration （UF） could be considerably effective to remove organic micropollutants from aqueous phase, and estradiol equivalent （EEQ） in the final effluent was not detected by YES assay. In addition, the process of reverse osmosis （RO） following anaerobic/anoxic/oxic and membrane bioreactor （MBR） showed such high removal efficiencies of target compounds that few of them could be detected in the final effluent. The results indicated that the two processes could alleviate the potential environmental risk caused by reclaimed water, and guarantee their safe and healthy reuse.

关 键 词：再生水 微量有机污染物 环境风险 

分 类 号：X703.1[环境科学与工程—环境工程]