中文摘要：

为分析城市污水再生回用的环境风险，根据对北京市不同补水方式的河湖中壬基酚监测结果，参考美国国家环保局风险信息综合系统中有关酚类物质风险评价参数和相关机构及文献资料提供的壬基酚鱼类毒性试验数据。采用商值法，对污水再生后回用于河湖补水时壬基酚对鱼类雌激素作用风险进行了评价．结果表明。污水回用于河湖补水时，壬基酚对部分鱼类的性分化危害风险不容忽视，必须采取相应的对策和管理措施消减这种风险；当河湖补再生水的比例小于50％时，再生水中壬基酚标准限值建议为2μg/L.

英文摘要：

In order to analyze the environmental risk of reclaimed wastewater, based on the monitored results of nonylphenol in several urban lakes from various supply water models in Beijing, and with a review of the phenol toxic parameter from integrated risk information system of the Unite State Environmental Protection Agency and the nonylphenol toxic tested data on fish from interrelated organizations and documents, the primary fish sex transformation risk assessment of nonylphenol was conducted by using the criterion of risk quotient when the sewage was reclaimed as the landscape complementary water. The results indicate that the risk quotient can not be ignored, and some measurements should be taken to reduce the risk. When the proportion of supplying reclaimed wastewater for urban lakes is smaller than 50%, the standard of nonylphenol in reclamation wastewater was proposed as 2 μg/L.