基于主成分分析法的再生水水源水质综合评价

Assess the Water Source Quality of Reclaimed Water Based on Principal Component Analysis

为了对不同污水厂再生水水源水质进行比较综合评价,采用主成分分析法对深圳市A、B、C污水厂再生水水源水质指标进行了同一分析,找到了不同指标之间的相关性和信息重叠之处,从众多指标中进行了综合汇总,提炼出了不同污水厂主要的控制指标。应用信息量集中的综合指标代替了众多的预选指标,得到了主成分表达式及主成分综合模型,并计算了主成分值和综合主成分值,对不同污水厂再生水水源本身以及之间进行了分级比较分析。通过此方法对A、B、C污水厂再生水水源水质提供了直观便捷又具有科学依据的综合评价。

In order to evaluate the water quality of the reclaimed water source from different wastewater treatment plants comprehensively, the water quality index of reclaimed water which belong to A、B and C wastewater treatment plants of Shenzhen was analysed by the way of principal component analysis respectively. It was turned out the correlation of the different indexes and overlaps information were found, many indexes were summarized, the main control index of the different wastewater treatment plants were refined, made the synthetical index of concentrated information insteaded of many of the caucus indexes, the principal component expression and the principal component integrated model were got, the principal component value and integrated principal component value were calculated, and the reclaimed water source from different wastewater treatment plants were analyzed in-inter itself, which provided intuitive, convenient and scientific overall merit for the reclaimed water source water quality of the A、B and C wastewater treatment plants.