The Experimental Study On The Treatment Of Acid Coal Mine Drainage By Loess-Microorganism System

With the stricter demand of environmental protection, more and more attention is being paid to the pollution brought by acid mine drainage (AMD). AMD contains high concentration of sulfate, oxidation of sulfide and the dissolution of sulfate in minerals are the intrinsic factor wastewater acidification. In the acidulate process, the leach of heavy metals seriously degrade environmental quality. Such problems have attracted more attention of researchers and governments in foreign countries since the 20th century 70's, and in china 1990's. At present the general treatment are lime neutralization, wetland plant treatment and microorganism method. But the lime neutralization is easy to cause secondary pollution, wetland plant treating remaining is not thorough, microorganism method expense is low, and it does not have secondary pollution, but the craft is complex.Review of existing research indicates that active-treatment of AMD are necessary to be studied in-depth to meet stricter demand of environmental pollution control. A focused research in recent years of these technologies is sulfate treatment in acid coal mine drainage (ACMD).On the basis of forerunner's studies, this topic took ACMD as the research object and designed a set of wastewater rapid infiltration land...