Abstract: This paper describes the site metering and analysis of water quality in the sewage drain reach of Sibao sewage treatment plant, Hangzhou. The river pattern and hydrology of sewage drain reach, the methods and instruments of water quality sampling and water discharge measurement are briefly introduced. For the water quality metering, the index of COD, DO, pH, SS and water temperature is analysed and discussed. The results of the numerical model of COD distribution is also introduced. Finally, the summary value of the engineering benefit of the sewage drain work and the effect of the sewage dilution are made.

Key words: sewage, sewage dilution, sewage drain

摘要： 本文叙述杭州市四堡污水处理厂污水排放江段现场水质检测和分析。文中简介了排污江段河势、水文及工程概况。现场水质采样及测流的方法仪器和断面布置,对水质检测内容包括COD、DO、pH、SS及水温等指标进行了分析和讨论。文中还对COD分布的数学模型成果作了扼要介绍,文末,综合评价了入江排污工程效益和污水释放效果。

关键词: 污水, 水质检测, 水质采样, 数学模型