星湖水动力条件及水质模型的研究Ⅱ.水质模型

根据星湖的湖泊特征和水污染特点，建立了包括NH4^ N、NO2^-N、NO3^-N、CBOD、DO多元耦合氧平衡模型、P平衡模型以及Cho.a^-P关系统计模型。模型中的参数采用实验法、经验公式法以及利用实测率定等方法进行估值。经实测资料验证，模型精度达到基本要求，可应用于星湖水质管理的实际工作之中。

RESEARCH OF HYDROLOGICAL CONDITION AND WATER QUALITY MODEL OF XINGHU LAKE Ⅱ. WATER QUALITY MODELING

Based on water pollution characteristics of Xinghu Lake, an oxygen equilibrium water quality model, in which the water quality indexes NH4+- N, NO2-- N, NO3-- , CBOD, DO were included, a phosphate equilibrium model and a Chl. a-P relation statistical model were established. The parameters of the models were determined on basis of chemical experiments, empirical formula and statistical analysis. Water quality data of Xinghu Lake in 1993 were used to verify models and the results show that the deviation (in percentage) of calculated and real values is mostly less than 20 %, which indicates that the models approximately simulate the movement of water flow and pollutants in Xinghu Lake. The models can be used in the water quality management work of Xinghu Lake.