中小河流水体易降解有机物实际可容纳量的计算

Practical Capacity Calculation of Easily Biodegradable Organic in Small and Medium-sized River

关于中小河流水体易降解有机物水环境容量的计算模型很多，但通常求得的都是水体的最大容纳量，而忽视了水体中原有污染物自净已经消耗的空间。通过分析现有易降解有机物水环境容量模型与实际可容纳量之间的差距，提出水体实际可容纳量必须去除水体已有污染物所耗用的自净量，并通过实例验证了其有效性。

There are lots of water environmental capacity model of easily biodegradable organics of small and mediumsized river, however, these model＂ s result which ignored the used capacity of the exist contamination are clearly the maximum,but not practical water environmental capacity. In this paper,on the basis of comparison with the practical water environmental capacity, the used capacity of the exist contamination should be considered .Practical calculations have been made to improve its validity.