粉煤灰井下填充的环境影响及控制实验研究

针对平煤集团矸石电厂粉煤灰的浸出毒性进行实验研究。在实验室模拟控制条件下设计了两种控制条件:一是将粉煤灰与粘土均匀混合;二是将粉煤灰与粘土分层填充。通过实验分析可知,在两种处理措施中,粘土层土壤的吸附、转化等作用,对降低F-的淋出具有一定的效果。分析比较两种不同处理措施的效果,可知均匀混合处理对重金属的溶出控制作用较大。

Experimental Study of Environmental Impact and Control during Underground Filling with Fly Ash

Experimental study was conducted on the extraction toxicity of fly a sh discharged from coal waste-fired power plant of Pingdingshan Coal Group Co. Ltd. Two control conditions were designed under the simulated control condition in laboratory: one is to uniformly mix fly ash with clay, and another one is to fill fly ash and clay layer by layer. It can be seen from experimen-tal analy sis that among two treatment measures, the absorption and transformation of cla y layer has a certain effect for reducing the eluvia-tion of fluorine ions. The treatment by uniform mixing has great effect on the eluviation control of heavy metals through analysis and compar-ison of the effect of two different treatmen t measures.