摘要
With the development of industry in China, the emission issues of indus- trial wastewater has got more and more attention. Excessive levels of pollutants in wastewater are urgent problem to be solved. Together with the emissions of do- mestic wastewater, the discharge amount of pollutants has exceeded standard in many cities, which not only pollutes the water resources, but also greatly threatens the environment, and does great harm to people＇s health. The principal component analysis was conducted based on the principal components extracted from the data of major pollutants emission conditions in the wastewater of major cities from the China Statistical Yearbook 2014.
随着工业的发展,工业废水的排放问题日益提上日程。废水中污染物的超标更是一个亟需解决的问题。再加上居民生活废水的排放,导致许多城市废水中污染物的排放量会超标,这不仅会对水资源造成污染,还是对环境的极大威胁,更对人类健康有极大的危害。基于《中国统计年鉴(2014)》中的主要城市废水中主要污染物排放情况数据提取主成分,进行主成分分析。
