基于总磷的长湖水环境容量核算

在对长湖流域水资源状况、水质现状、水文条件调查的基础上，根据水质目标的要求，利用纳污水体的概率型水环境容量模型，对基于总磷的长湖水环境容量进行了核算。结果表明：长湖的水环境容量是动态变化的，而模型的选取和参数的取值对概率型水环境容量的计算非常关键。通过计算分析得到长湖磷的概率水环境容量为：19％丰水期：41．9t／a-45．9t／a；49％平水期：31．8t／a～41．9Va；32％枯水期：11．8t／a～31．8t／a。

The Calculation on Water Environmental Capacity Based on TP in Changhu

The thesis is adopted to Changhu lake basin water resource state, water quality current situation,foundation that investigate of hydrology terms, and according to the request of water quality goal, calculates the environmental capacity of water based on the TP by the existing probability type environmental capacity of water of receiving the sewage body. The result shows that：The environmental capacity of water of getting the lake is dynamic change, the choosing of model among them and calculation of the probability type environmental capacity of fetching value of the parameter are the key. Through environmental capacity of probability water of getting the Changhu Lake phosphorus of computational analysis being, 19% wet season： 41.9 t/a -45.9 t/a; 49% period when a river is at its normal levels： 31.8 t/a -41.9 t/a; 32% dry seasons：11. 8 -31.8 t/a.