摘要
谷昌坝水库为松华坝水库的前置库,1993年拦截泥沙25821t、总磷21 4t、总氮45 88t,分别占入库总量的92 4%、83 3%和39 2%,且90%以上的磷吸附在泥沙及颗粒上迁移。1996年以来谷昌坝共清淤58 05万m3,挖深7m-8m。1994年、1999年和2000年的监测数据比较表明,松华坝水库水质均为轻污染,没有进一步恶化。
Guchangba reservoir is the pre-reservoir of Songhuaba reservoir. The pre-reservoir blocks the mud and sand which was 25821 tons in total in 1993 to the reservoir. The mud and sand consisted of total phosphorus (21.4 tons), total nitrogen (45.88 tons). The three quantities are 92.4 percent, 83.3 percent and 39.2percent of the total quantities separately which may go into the reservoir. 90 percent of phosphorus is adsorbed by the mud and sand. Guchangba reservoir has been cleaned the 580,500m^3 of bed mud and deepened to 7-8 meters since 1996 and 2000 showed that the water quality of Songhuaba reservoir did not deteriorate further.
出处
《云南环境科学》
2003年第4期22-24,27,共4页
Yunnan Environmental Science
关键词
水质污染
底泥疏浚
松华坝水库
pollution of water quality
dredging the bed mud
Songhuaba reservoir
