新型复合稳定化材料对污染土壤中砷形态变化的影响  

Effects of New Composite Stabilized Materials on Arsenic Speciation in Contaminated Soil

作　　者：李武楠 马栋 姚丽华 孟飞 俞栋 LI Wu-nan;MA Dong;YAO Li-hua(Hangzhou Keyun Environmental Technology Co.,Ltd.,Hangzhou,Zhejiang 310000)

机构地区：[1]杭州科运环境技术有限公司,浙江杭州310000

出　　处：《安徽农业科学》2021年第22期100-101,109,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]比较不同配比材料对土壤中砷的稳定化效果,获取优化配方和参数。[方法]通过4因素3水平正交试验条件比较硫酸-硝酸法浸出砷的浓度。[结果]最佳复合材料配方为硫酸亚铁∶腐殖酸∶凹凸棒土∶石灰的比例为3∶1∶1∶1或3∶1∶2∶1,对As浸出率的贡献影响因素排名分别是硫酸亚铁>腐殖酸>凹凸棒土=石灰。[结论]结果可为类似污染土壤修复提供依据。[Objective]Compare the stabilization effects of different proportioning materials on arsenic in the soil,and obtain optimized formulas and parameters.[Method]The concentrations of arsenic leached by sulfuric acid-nitric acid method under the conditions of 4 factors and 3 levels orthogonal test were compared.[Result]The best composite material formula was the ratio of ferrous sulfate humic acid:attapulgite:lime is 3∶1∶1∶1 or 3∶1∶2∶1,and the ranking of the contributing factors to the As leaching rate were ferrous sulfate>humic acid>attapulgite=lime.[Conclusion]This result can provide a basis for the remediation of similar contaminated soil.

关 键 词：复合材料 稳定化 砷 土壤 浸出 

分 类 号：X53[环境科学与工程—环境工程]