煤矸石复垦后溶出液中污染因子的土壤吸附性能研究

Study on the Adsorption Properties of Soil Pollution Factor in Fluid Exsolution of Coal Gangue Reclamation

采用静态试验法对煤矸石复垦后溶出液中污染因子的土壤吸附性能进行了研究;研究结果表明,煤矸石静态溶出主要污染因子为F-、SO42-和重金属Mn;改性基底土壤在不影响对其它污染因子吸附的前提下,能够对SO42-起到较好的吸附效果;改性基底土壤对SO42-、F-、Mn、As的饱和吸附量分别为14.80 mg/g、0.085 mg/g、0.0087 mg/g、0.073μg/g;SO42-、F-、Mn、As解吸率和解吸因数都很低,分别为4.32%和4.52×10-2,3.31%和3.43×10-2,1.44%和1.46×10-2和0.78%和7.9×10-2。

The static test method was used to study coal gangue reclaimed soil adsorption stripping pollution factor in liquid. The results show that the main pollution factors of the static state dissolving coal gangue are F-, SO^- and heavy metal Mn. Modified substrate soil without influencing on other pollutants adsorption,is able to better adsorb SO2/4. Modified substrate soil on SO2/4, F-, Mn, As saturation adsorption capacity were 14.80 mg/g, 0.085 mg/g, 0.0087 mg/g, 0.073 μg/g. SO2/4, F-, Mn, As desorption rate and desorption factor are very low, respectively 4.32% and 4.52×10-2, 3.31% and 3.43×10-2, 1.44% and 1.46×10- 2and 0.78% and 7.9×10-2.