Environmental problems and the ecological restoration of polluted land in ion-absorbed rare earth mine: A conceptual model
The iron-absorbed rare earth deposit occurred in Jiangxi,Fujian Provence et al.in the south of China and is a unique kind of rare earth ores in the world.The Longnan rare earth mining districting in the south of Jiangxi Provence are the most representative iron-absorbed rare earth deposits of China,where the rare earth minerals have been extracted by methods of leaching mining with the oxalate or the ammonium sulfuricum since the 1970s.Environmental problems including the serious chemical land pollution in mining areas and the severe soil and water loss,caused by rare earth mining are increasingly acute.The absence of effective polluted land restoration technology makes the work of polluted land restoration little progress.Combining the geochemical engineering and the flexible structure engineering technologies for polluted lands restoration in rare earth mining areas is a new attempt.The Zudong rare earth mining area is selected as study object for land restoration,where pH values in polluted soil will be adjusted by clay minerals and contents of the ammonia nitrogen and the sulfate radical will be decreased.All soil removed from other place adding restoration materials will be filled in ecological bags and assembled on the exposed land of rare earth mine in way of the flexible structure engineering for plant restoration.Combination of the geochemical engineering and the flexible structure engineering technologies is a new attempt for rare earth polluted land ecological restoration.
S.W.Liu X.D.Liu Y.Y.Huang X.J.Luo
National Research Center for Geoanalysis, Beijing, China Key Laboratory of Ecological Geochemistry, Beijing Shuntian Lvse Bianpo Keji Ltd., Beijing, China
国际会议
北京
英文
451-456
2014-10-16（万方平台首次上网日期，不代表论文的发表时间）