沈阳市某冶炼厂污染土壤中铜锌铅镉的稳定化研究

目的]找到合适的土壤固定铜、锌、铅、镉的环境条件和吸附性能好、容量大的土壤矿物。方法]以原沈阳市某冶炼厂废旧厂区污染土壤为研究对象,通过向土壤中添加碳酸钠,研究不同剂量的碳酸钠对土壤重金属污染的稳定化效果。结果]Na2CO3添加量控制在2%以下时对铜锌铅镉的稳定化效果较好。结论]该研究可以为降低土壤中铜锌铅镉的生物有效性,治理铜、锌、铅、镉复合污染土壤提供现实依据。

Study on Stabilization of Cu, Zn, Pb, Cd in Soil of a Smelter of Shenyang City

Objective]The research aimed to find out the optimal soil fixation condition of Cu,Zn,Pb,Cd and the soil minerals which had good adsorption and big capacity.Method] Taking a smeltery in Shenyang,Liaoning Province as research objects,alkali chemicals Na2CO3 were added.The stability of Na2CO3 on soil heavy metals contamination was studied.Result] Mutli-sulfured calcium had clear effects on stabilization of soil arsenic when Na2CO3 concentration was below 2%.Conclusion] The research could provide the theoretical basis for the reduction of the biological effectiveness of Cu,Zn,Pb,Cd and the control of the soil combined contamination.