松花江航电枢纽工程截流水质监测及分析

Monitor and Analysis on Water Quality Condition of Songhua River in Harbin Section after Dadingzishan Closure

在收集资料和实际调查基础上,对松花江流域(哈尔滨段)水质状况及主要污染物进行调查,对该流域水环境进行监测,对水质状况做出全面评价,重点研究大顶子山航电枢纽工程投入使用后,该江段水质状况的变化及因素。结果显示:该工程投入使用后,哈尔滨江段的水质状况逐年提升。大坝截流后,随着悬浮物逐渐沉降,水质逐渐趋好,主要影响因子含量也逐渐下降;哈尔滨江段的着生藻类种类增加4个属、密度增加10.8倍,水体呈现出蓝绿藻比例升高、污染指数下降等变化特征。

The study focus on the water quality condition of Songhua River in Harbin section after Dadizishan closure. The results show that the water quality ameliorates after the building of the closure. With the gradual settlement of suspended solids after the dam closure, water quality is getting better and the main influencing factor levels decline gradually. Four families of algae added to the water and concentration is 10.8 times higher. The ratio of cyanophyta and chlorophyta increased and the pollution index dropped.