基于理化-生物指标与CCMEWQI模型的水质综合评价

Water quality assessment model based on physical-chemical indicators and CCME WQI

为了将生物指标纳入水质评价,基于CCME WQI模型,建立了水环境质量的理化-生物指标综合评价方法。五里湖的水质评价实例显示:相比于纯理化指标的评价结果,在引入生物指标后,CCME WQI模型可以更全面、严格而准确地反映研究区域的水环境状况。除此之外,基于理化-生物指标和基于纯理化指标的CCME WQI模型计算结果的区别主要在于超标范围F1与超标频率F2两方面。而在生物指标的超标幅度不大的情况下,两者在超标幅度F3的计算结果中并没有显著差异。

To introduce biological indicators into water quality evaluation,a comprehensive assessment method was established based on the CCME WQI model,in which both of the physical-chemical and biological indicators were included.The water quality evaluation of Wuli Lake showed that CCME WQI model can reflect the water environment condition more comprehensively,strictly and accurately byintroducing biological indicators.In addition,the major differences between the CCME WQI model using physical-chemical and biological indicators and the CCME WQI model only using physical-chemical indicators lie in the calculation results of scope(F 1)and frequency(F 2).When the ovenproof ranges of biological indicators were not very large,their difference in amplitude(F 3)was not significant.