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为了实现在一般微机上也能模拟浅水湖泊群的水质变化，从水质变化的基本控制方程出发，根据浅水湖泊群的水流特征与污染物迁移特性，首先建立了浅水湖泊群ＢＯＤ－ＤＯ模型，然后针对恒定水流和污染源稳定排放污水的情形，把处于湖泊边界上的污染源所面临的湖面视为半无限区域，并考虑到浓度的可叠加性，提出了浅水湖泊群ＢＯＤ－ＤＯ模型的近似解析解法。实例结果表明，这种解法计算工作量和存储量都较小，在一般微机上即能进行，且计算准确度基本上能满足工程实际要求。
In order to realize the water quality change of shallow lake lakes in general microcomputer, starting from the basic governing equation of water quality, according to the characteristics of water flow and the migration of pollutants in shallow lakes, BOD-DO model of shallow lakes is established firstly, then In the case of stable discharge of sewage by constant water flow and pollution sources, the lake facing the pollution source on the lake boundary is regarded as a semi-infinite region. Considering the superimposition of concentration, an approximate analytical solution of the BOD-DO model for shallow water lakes is proposed . The results of the example show that this method has less computational workload and storage capacity, and can be carried out on a general microcomputer. The calculation accuracy can basically meet the actual project requirements.