不同吸波介质对微波法降解土壤中氯丹影响的研究

[目的]比较碱性条件下3种吸波介质对微波法降解土壤中氯丹的影响.[方法]以农药生产企业搬迁遗留场地土壤为研究对象,研究了在含水率为20％、碱性条件下Cu2O、MnO2、粉末活性炭3种吸波介质对土壤升温及氯丹去除率的影响;同时以活性炭为最佳吸波介质,研究了其添加前后对土壤中氯丹去除率的影响,并考察了增大土壤处理量对氯丹去除率的影响.[结果] Cu2O、MnO2、粉末活性炭3种吸波介质对氯丹去除率的影响大小排序为粉末活性炭、MnO2 、Cu2O.相同微波条件下,氯丹去除率随土样质量增加而降低,但微波利用效率随土样质量增加而不断提高并趋于平衡.[结论]为进一步的工程应用提供了理论依据.

Effects of Different Absorbing Mediums on Microwave Remediation of Chlordane Contaminated Soil

[ Objective] The aim was to compare effects of three kinds of absorbing mediums on microwave remediation of chlordane conta minat- ed soil. [ Method] Taking the soil of remnant pesticide manufacturing enterprises as object, the effects of different absorbing mediums on soil war ming and removal rate of chlordane were studied under the conditions of 20% moisture content and alkaline. Meanwhile, the research on the chlordane removal rate with powder active added or not along with the effect of increasing amount of soil on the chlordane removal was conducted. [ Result ] The influence of different absorbing mediums on chlordane removal as follows ： powder active carbon 〉 MnO2 〉 Cu20. Under the same condition of microwave, the removal rate of chlordane decreased as the increase of soil quality, but microwave efficiency increased and then ap- proached equihbrium as the increase of soil quality. [Conclusion] The research results provide theoretical basis for further industrial application.