复州河水环境质量综合评价

Comprehensive evaluation of water environment quality in Fuzhouhe river

根据2006-2009年的水质监测数据,用水质标识指数法对复州河水环境进行单因子评价和综合评价.结果表明,在选择的4个断面里,松树水库和复州河大桥断面水质类别分别为Ⅱ类、Ⅲ类,均符合水功能目标;蔡房身大桥断面水质类别Ⅳ～Ⅴ类,低于水功能目标1～2个级别.影响复州河水质的主要水质指标是氨氮、石油、化学需氧量.并通过有机污染指数法进行比较,认为水质标识指数法反映的水质信息更为准确、客观.

According to the water quality monitoring data from 2006 to 2009, the single factor evaluation and the comprehensive evaluation are made for the water environment of Fuzhouhe river by using the water quality identification index method. The results of the four sections show that the water quality grades of the Songshu reservoir and the Fuzhouhe bridge sections are class Ⅱand class Ⅲ which are meeting the water function target,the Caifangshen bridge section is the class ⅣorⅤ,and is the lower than one or two grade of the water function target. The ammonia nitrogen, petroleum and chemical oxygen demand are the main water quality indicators to affect the water quality of Fuzhouhe river. Comparing with the organic pollution index method, the water quality information obtained from the identification index method is more accurate and objective.