不同稳定剂对土壤重金属稳定效应的影响研究  

Effects of Different Stabilizers on the Stabilization of Heavy Metals in Soils

作　　者：吴玉清 王永会 李祥 胡鸿飞 王艺璇 WU Yu-qing;WANG Yong-hui;LI Xiang;HU Hong-fei;WANG Yi-xuan(Hongguan Environmental Technology Co.Ltd.,Suzhou 215200,China;School of Environment and Safety Engineering,Changzhou University,Changzhou 213164,China)

机构地区：[1]鸿灌环境技术有限公司,江苏苏州215200 [2]常州大学环境与安全工程学院,江苏常州213164

出　　处：《安徽化工》2021年第6期126-130,共5页Anhui Chemical Industry

摘　　要：目前,我国重金属污染土壤的情况越来越严重,基于此情况,试验模拟重金属复合污染稻田土壤环境,向污染土壤中添加单一稳定剂(石灰石、高岭土、菌渣、磷酸二氢钾)及其组配稳定剂。试验结果如下:在单一稳定剂中,石灰石的稳定/固化效果最好;石灰石对Pb、Cd、Cu、Ni、Zn 5种重金属的稳定效率分别为96.48%、41.62%、98.41%、46.98%、50.04%。在组配实验中,2∶1的SG(石灰石+高岭土)的稳定效率最高,Pb、Cd、Cu、Ni、Zn 5种重金属在供试土壤中的浸出量分别降低95.63%、31.69%、97.07%、36.45%、36.78%。At present, China′s heavy metal pollution of the soil situation is more and more serious, so the test simulation of heavy metal compound pollution of paddy soil environment, to the contaminated soil to add single stabilizers(limestone, kaolin, mushroom residue, potassium dihydrogen phosphate) and their combination stabilizers were added to the polluted soil. The results are as follows: The stability of limestone were the best among all single stabilizers. The stability of limestone on Pb, Cd, Cu, Ni and Zn was 96.48%, 41.62%, 98.41%, 46.98% and 50.04%. The stability of SG(limestone+kaolin) 2∶1 was the highest in the experiment. The leaching rates of 5 heavy metals in Pb, Cd, Cu, Ni and Zn were reduced by 95.63%, 31.69%, 97.07%, 36.45%, 36.78%, respectively.

关 键 词：稳定剂 重金属 稳定效率 TCLP 

分 类 号：X53[环境科学与工程—环境工程]