改良材料强化紫薇修复Cu污染土壤  

AMENDMENT MATERIALS ENHANCED LAGERSTROEMIA INDICA L. REMEDIATION TECHNOLOGY FOR Cu-POLLUTED SOIL

作　　者：梁晶 张青青 张长波 LIANG Jing;ZHANG Qing-qing;ZHANG Chang-bo(Shanghai Academy of Landscape Architecture Science and Planning,Shanghai 200232,China;Shanghai Engineering Research Center of Landscaping on Challenging Urban Sites,Shanghai 200232,China;Shanghai Kesearch Institute of Chemical Industry,Shanghai 200062,China)

机构地区：[1]上海市园林科学规划研究院,上海200232 [2]上海城市困难立地绿化工程技术研究中心,上海200232 [3]上海化工研究院有限公司,上海200062

出　　处：《环境工程》2021年第6期154-159,共6页Environmental Engineering

基　　金：上海市建筑建材业市场管理总站资助项目(住建管2017-001-005);上海市绿化和市容管理局科技攻关项目(G190202)。

摘　　要：选用木本植物紫薇为研究对象,采用室内盆栽试验方法,研究了不同有机改良材料及螯合剂二乙胺四乙酸(EDTA)和乙二胺二琥珀酸(EDDS)添加量对植物修复Cu污染土壤的影响。结果表明:螯合剂EDTA和EDDS较有机改良材料对紫薇修复Cu污染土壤强化效果好,且EDTA添加量为5 mmol/L,或EDDS添加量为3 mmol/L时,对紫薇修复土壤Cu的强化效果较好;添加有机改良材料均对紫薇修复低Cu污染土壤有强化作用,且添加量为30%时强化效果明显,但不同有机改良材料对紫薇修复高Cu污染土壤的强化作用则存在一定差异,仅50%的绿化植物废弃物、农业有机废弃物和草炭处理具有强化效果。Lagerstroemia indica L., a woody plant was selected as the studied subject, and the strengthening effect of types and additive amount of amendment materials on the phytoremediation of Cu-contaminated soil were conducted with the incubation experiments. The results showed that there was a more significant enhancement effect for EDTA and EDDS than organic amendment materials, and the enhancement effect was the highest at the additive amounts of 5 mmol/L EDTA or 3 mmol/L EDDS. However, the enhancement effect was found on almost all the organic amendment materials on the lower Cu-polluted soils, and more significant at the organic amendment materials/soil volume ratio of 30%. Moreover, the strengthening effect of different amendment materials on the phytoremediation of the higher Cu-polluted soil was only found at organic amendment materials/soil volume ratio of 50% for the greenery waste, agricultural organic waste and peat.

关 键 词：紫薇 CU污染土壤 Cu吸收率 Cu去除率 叶片 

分 类 号：X53[环境科学与工程—环境工程]