关键词: 污水, 水质检测, 水质采样, 数学模型

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