潮白河再生水受水区水质变化特征多元统计分析  

Multivariate Statistical Analysis for Characteristics of Reclaimed Water Quality in Reception Basin of Chaobai River

作　　者：王健[1] 何江涛[1] 刘玉梅[1] 姜烈[1] 

机构地区：[1]中国地质大学(北京)水资源与环境工程北京市重点实验室,北京100083

出　　处：《环境科学与技术》2014年第6期171-176,共6页Environmental Science & Technology

基　　金：中央高校基本科研业务(2012065);2012环保部公益项目(20120953-2)

摘　　要：多元统计分析在水质评价中是一种简便、有效的分析方法。采用系统聚类分析、因子分析对潮白河再生水受水区水质变化特征进行了分析研究。结果表明:聚类分析将采样时间明显划分为2组,分别对应于高温季节和低温季节,说明受水区再生水水质具有明显的季节性变化;同时将采样点分为2类,从空间上反映不同的水质水平。因子分析提取了公因子F1和F2,F1反映水体的离子含量、硬度和含氧量水平,F2反映水体的含氮和含磷水平;样本综合得分反映了受水区再生水水质沿流向呈逐渐变好的趋势,且水质呈较明显的季节性变化;结合GB 3838-2002《地表水环境质量标准》,将受水区再生水水质量化,即均劣于Ⅴ类地表水。Multivariate statistical analysis is a simple and effective method for water quality assessment. Cluster analysis and factor analysis were used to study the characteristics of reclaimed water quality in reception basin of Chaobai River. Results showed that cluster analysis of the sampling time is divided into two groups corresponding to the high temperature season and low temperature season,which indicates that the reclaimed water quality in reception basin has obvious seasonal variation; meanwhile the sampling points are divided into two groups, which reflects different levels of water quality in space. Factor analysis extracts two factors called F~ and F2. F1 reflects the ion content, hardness level and oxygen level of the water while F2 reflects nitrogen level and phosphorus level of the water. Sample composite score indicates that the reclaimed water quality is gradually getting better along the trend of the flow and has clear seasonal variation in reception basin. Quantification of the reclaimed water quality in reception basin shows that the reclaimed water quality is inferior to Grade V surface water of Surface Water Environmental Quality Standard of GB 3838-2002.

关 键 词：再生水 聚类分析 因子分析 

分 类 号：X824[环境科学与工程—环境工程]