功效黑臭系数法评价城市水体黑臭程度的研究

Evaluation on Malodorous and Black River Based on Efficacy Coefficient Method

功效黑臭系数法是基于功效系数计算的原理,沿用了透明度、溶解氧、氧化还原电位、氨氮等传统方法的评价指标,分别计算各单项指标功效系数,结合其权重系数,建立起某一特定水体黑臭程度的评价分级模型。用功效黑臭系数法评价南宁市3条水质差异显著的内河,并以南宁市朝阳溪的水质数据实例对模型进行检验,与传统方法评价结果进行对比,结果显示该方法有良好的准确性和可靠性,3条内河结果一致的监测断面达到94%,说明该方法具有一定的应用前景。

Efficacy Coefficient Method for malodorous black river is one kind of grading evaluation model based on the theory of the efficacy coefficient method and it is established for one specific water body,inheriting some traditional ways,such as transparency of water,DO(Dissolved Oxygen),ORP(Oxidation-reduction Potential),ammonia nitrogen,and so on,in which every single indicator efficacy coefficient is respectively calculated and each weight of the coefficients is considered.This method is used to evaluate3urban rivers with different water quality parameters in Nanning and another river named Chaoyang Stream in Nanning as testing model.The results show that,compared with the traditional method,this one has good correctness and reliability,and the monitoring sections of the3urban rivers reach94%,showing that this method is prospective in the future.