This study analyzed the distribution of pollution sources and current situation of water quality of Maohe river watershed. The one-component one-dimensional water quality model and Dobbins-Camp steady-state model which involved the hydrological data, water-quality monitoring data, environmental statistics and the data from social statistics bulletin, were used to simulate the water environment of Maohe River and calculate the degradation coefficient of main pollutants of Maohe river by inversion. Moreover, the paper summarized the existing environmental problems of Maohe River, calculated the water quality before and after the implementation of two pollution control schemes and determined the key points and the restriction factor of integrated pollution control of Maohe River watershed.%分析了四川省毛河流域各类污染源分布状况及水质现状，采用一维稳态单组分水质模型、多宾斯-坎普稳态模型，引入水文数据、水质监测数据、环境统计数据、社会统计公报数据，以Excel作为数据平台，对毛河水环境进行了动态模拟，反演出主要污染物降解系数。总结了毛河水环境目前存在的问题，并模拟计算了2种污染综合治理方案实施后对毛河水质的影响，确定了毛河流域水污染综合治理的重点以及制约因子。
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