Abstract:The effluent quality of seven wastewater treatment plants (WWTPs) in Kunming was assessed by using multivariate statistical analysis, combining classification evaluation and percentile of standard compliance. According to Level I-A of "Discharge standard of pollutants for municipal wastewater treatment plant" (GB18918-2002), the compliance percentiles of COD in the effluent of the 7 WWTPs were all 100%, BOD5 and SS were above 94% and 95%, respectively. The percentiles of standard compliance of TN, TP and NH3-N presented much difference. The deviation of TP was highest among all the indicators by the multidimensional scaling analysis. The inventory of the control indicator for standard compliance of the effluent of Kunming WWTPs was established, with classifying the percentile of standard compliance of the effluent and formulating the rules for water quality assessment of the effluent of WWTPs. The results showed that TP was the key control parameter of the 2nd WWTP and the 7th WWTP, and was the first priority control parameter of the 3rd WWTP. Meanwhile, TN was the first priority control parameter of the 3rd WWTP and 7th WWTP, and NH3-N is the first priority control parameter of the 1st WWTP and 3rd WWTP in Kunming.
孙迎雪, 吴光学, 胡洪营, 郭昉, 吴毅晖, 郭玉梅. 基于达标保证率的昆明市污水处理厂出水水质评价[J]. 中国环境科学, 2013, 33(6): 1113-1119.
SUN Ying-Xue, WU Guang-Xue, HU Hong-Ying, GUO Fang, WU Yi-Hui, GUO Yu-Mei. Assessment of effluent quality of wastewater treatment plant in Kunming based on the percentile of standard compliance method. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(6): 1113-1119.