The Evaluation of Water Environment Quality and the Pollution Factor Analysis for the Lala Copper Mine,Sichuan Province

Investigated the the Lala copper mine's water environment.According to Environmental Quality Standards for Surface Water(GB3838-2002),synthetically evaluated its water environment quality with the fuzzy mathematics method.In conclusion,the debris water and sanitary sewage was polluted seriously(V kind),and the others were clean(I kind).Cu,Pb,Zn,Cd from debris water and total nitrogen and phosphorus from sanitary sewage were regarded as the the main pollution factors.The possible harm was discussed further.And the metal poison in debris water can be eliminated by adsorpting and precipitating,the total nitrogen and phosphorus in sanitary sewage can be eliminated by ionic exchange technique and adsorption,and the water environment should be supervised and managed rigorously.