火电厂粉煤灰中Cr^(6+)迁移规律的试验研究

Study on the migration of Cr^(6+) in coal-ash from thermal power plant by lab experiments

通过模拟试验 ,探讨火电厂粉煤灰中Cr6 +迁移机理 .结果表明 ,在灰场堆置过程中 ,在冲灰水和大气降水的浸泡、淋溶作用下 ,粉煤灰中Cr6 +析出并随灰场废水下渗 ;土壤包气带的吸附作用有限 ,吸附达到饱和后 ,灰场废水继续下渗 ,导致Cr6

ThemigrationofCr 6+ incoal?ashfromthermalpow erplantisdiscussedbysimulating experiments.The resul ts showed that Cr 6+ is seeping in the permeating water from as h?field under the scouring?ash water and eluviation.The leaching imp act of soil is lim ited.The Cr 6+ is going on seeping into the groundwater and a serious Cr 6+ pollution is formed.