摘要
The break of the manganese slag dam in Songpan County caused the manganese pollution in Fujiang.Water quality monitoring was carried out for the groundwater sources at a percolation water project on Fujiang in Mianyang.The groundwater turned out to meet drinking water standards because of the adsorption and filtration of mud membrane,sand,gravel,and biological degradation.This shows that percolation projects on rivers for water supply deserve spreading.