广州西航道主要水源地水质达标分析

利用河网区非稳态水量、水质数学模型及水文、水质、污染源同步观测资料，推求了广州西航道水质降解系数；采用二维控制断面水质达标分析模型，建立了涨、落潮设计水文条件下水源地水质与污染源的响应关系；通过对影响广州西航道主要水源地西村、石门两水厂主要排污口的调查，研究了西村、石门两水厂的水质达标情况．结果表明：各排污口的削减方案涉及社会、经济等多种因素，很难仅从环境角度给出最佳方案；通过不同方案下水源地水质与排污量的响应关系曲线，可确定出水源地水质达标时各排污口的允许排污量．

Analysis of water quality achievable of main water source places along the west channel of Guangzhou City

An unsteady water quality and water quantity model and the synchronous monitoring data of 9 pollution sources along the west channel were employed to determine the water quality degradation parameters of the river channel. By use of the 2-D model for analysis of water quality achievable for the control section, the relationship between the water quality of water source places and pollution sources was set up with the rising and ebb tides taken into account. Based on an investigation of main wastewater discharge outlets affecting the major water source places, the Xicun and Shimen water plants, along the west channel of Guangzhou City, an analysis of water quality achievable was performed for the two water plants. The result shows that, for the formulation of an optimal scheme for regulation of discharge outlets, in addition to the environmental factor, the social and economic factors should be taken into account. Moreover, the relationship between the water quality and pollutant discharge of the water source places under different schemes can also be used to determine the allowable quantity of pollutants discharged from outlets to ensure the water quality of the water source places.