摘要
对高含沙、低污染永定河河水进行初步净化处理,是解决官厅水库水体污染,恢复水库向北京市供水功能的重要途径之一。示范工程研究表明,永定河水经黑土洼沟沉淀、大气富氧、增加水体停留时间等作用,对SS、COD、BOD5、总氮TN、总磷TP的平均去除率分别达到87.4%、47%、36%、72%、73%,处理系统可大幅度减少入库污染物质总量,降低河湖富营养化发生的危险。
The Yongdinghe River, the main surface water source of the Guanting Reservoir has been polluted. The statistic shows that 90% of contamination in the Guanting Reservoir comes from the Yongdinghe River. Based on the unique geological position, the Heituwa Ditch, which is divided into two parts by soft dam built in the middle of the reservoir, can be used to remove the pollutants in the water from the Yongdinghe River into the Guanting Reservoir. The monitored results of one year shows that the average removal rates of water poUutants from the Yongding River by water treatment in the Heituwa Ditch, i.e. SS, CODmn, BOD5, TN, and TP, are 88%, 47%, 36%, 72% and 73% respectively. Therefore, the Heituwa Diteh wiU play the most important role in improvement of water quality, and restoration of water supply function of the Guanting Reservoir in the future.
出处
《水文》
CSCD
北大核心
2008年第3期61-64,共4页
Journal of China Hydrology
基金
中德合作官厅水库水体恢复项目资助
关键词
黑土洼沟
柔性软坝
前置库
引水渠
Heituwa Ditch
soft dam
pre-treatment-reservoir
diversion canal
