基于TMDL计划的榆溪河流域水污染治理方案研究

Application of TMDL Model in Water Pollution Control Scheme of Yuxi River Basin

针对榆溪河水质污染严重的问题,有效治理榆溪河流域污染的现状。以榆溪河流域(榆林市境内)为研究对象,采用TMDL模型,结合单因子评价指标模型、简单负荷估值模型,在此基础上引入离差和均方差法,进行水污染负荷分配,根据污染负荷分配结果提出了基于TMDL值的污染控制措施。对榆溪河流域水污染防治规划结果表明,榆溪河流域COD和氨氮污染物均主要来自于非点源污染,需大量削减分散畜禽养殖的污染排放量。更有效更具针对性地改善榆溪河水污染现状,明晰防治不足和改善重点,并提出合理建议。

In order to improve pollution reduction, this paper takes the Yuxi River Basin (within the territory of Yulin City) as the research object, uses the TMDL model to deal with the distribution of water pollution load by combining the single factor evaluation index model, simple load valuation model, and the deviation and mean square error method, and puts forward some pollution control measures based on the values of TMDL. The results show that the COD and ammonia nitrogen pollutants in Yuxi River Basin are mainly from non-point source pollution, and reduce the pollution discharge of scattered livestock and poultry breeding. The model can reasonably improve the present situation of Yuxi River water pollution, clarify the deficiency of prevention and control and the key points of improvement, and put forward reasonable suggestions.