Experimental study on dynamic leaching of coal gangue by imulating intermittent precipitation
Taking coal gangue from a mining area in Jilin Province as the research object,dynamic leaching experiments are made to simulate precipitation conditions and quantitatively predict the intensity of environmental pollution caused by pollutants in coal gangue under atmospheric precipitation leaching.The results show that the substances released from the coal gangue in the mining area under dynamic leaching are chloride,sulfate,nitrate,iron,cadmium,zinc,etc.The pH value of the leachate is 7.39～8.64;High weathering coal gangue has a higher content of inorganic salt pollutants released through dissolution compared to fresh coal gangue;The concentration of pollutants released from coal gangue shows a logarithmic regression with the variation of precipita-tion.This regression equation can provide reference for quantitatively predicting the intensity of soil and water pollution caused by pollutants in coal gangue under atmospheric precipitation leaching.
万方数据
维普
