太滆运河水环境容量研究

水环境容量是区域污染物总量控制的基础和核心，可为流域水生态治理提供重要的科学依据。以往的相关研究多侧重于不同水文时期水环境容量的动态变化，而未将点、面源入河的季节性特征纳入考虑范畴。文章采用解析公式法，综合考虑点、面源污染特征确定点、面源协同影响的太滆运河水环境容量，并利用MIKE11 软件构建太滆运河汇水区水量、水质数学模型，模拟在最大允许排放量条件下典型断面的水质达标情况。研究表明：太滆运河水环境容量为COD 22 694.52 t/a、氨氮854.04 t/a、总磷195.58 t/a。典型断面均能实现水功能区划水质目标，该计算方法合理可行。

Water environmental capacity of the Taige canal

Water environmental capacity is the basis and core of regional total pollutant control, providing an important scientific basis for water ecological management in the basin. Previous studies mostly focused on the dynamic changes of water environmental capacity in different hydrological periods, but did not consider the seasonal characteristics of point and non-point sources into the river. The method of analytical formula is used to determine the water environmental capacity of the Taige canal under the combined influence of point and non-point sources pollution characteristics. Then,MIKE 11 is used to construct a mathematical model of water volume and water quality in the hydrological catchment area of the Taige canal, so as to simulate the water quality standard of typical sections under the condition of maximum allowable discharge.The research shows that the environmental capacity of the canal is COD of 22 694.52 t·a-1, NH3-N of 854.04 t·a-1 and TP of 195.58 t·a-1. All the typical sections can achieve the water quality target of water function zoning, and the calculation method is reasonable and feasible.