黄河兰州段水质污染分析评价及防治对策

Assessment and countermeasure on the water pollution of Lanzhou reach of Yellow River

根据2002-2006年黄河兰州段水质监测数据,按照《地表水环境质量标准》GB3838-2002中Ⅲ类水质标准,确定污染物的污染程度,选用内梅罗水污染指数法,运用方差分析,对黄河兰州段水质现状进行评价分析,结果表明:(1)黄河兰州段水体的主要污染物是粪大肠菌群和总氮;(2)大量未经处理的生活污水排放是黄河兰州段的主要污染源;(3)针对黄河兰州段生活污水污染现状,提出源头治污思路。

According to basic analytical methods of environmental quality standards for surface water in China （GB3838 - 2002 ）, we used the 2002 - 2006 monitoring data to evaluate and characterize water quality condition of Lanzhou reach of Yellow river, based on the Nemerow index and variance analysis of the mean square deviation. The results are obtained as follows： （ 1 ）The main pollutions in Lanzhou reach of Yellow river are fecal coliform and total nitrogen （TN） ; （2）The pollution source of Lanzhou reach of Yellow river is the discharge of numerous undisposed sanitary sewage ; （ 3 ） In connection with sanitary sewage pollution in Lanzhou reach of Yellow river, to propose treatment of pollution source.