原位电动修复氯离子污染土壤及地下水现场中试研究
Pilot Study on In-situ Electrokinetic Remediation of Chloride Ion Contaminated Soil and Groundwater
曾跃春 1郭宝蔓 1臧常娟 1胡海娟 1顾爱良 1吕俏芬1
作者信息
- 1. 江苏大地益源环境修复有限公司,江苏 南京 210012
- 折叠
摘要
针对高浓度氯离子污染地块,开展原位电动修复技术中试研究.在电压梯度为 1 V/cm,阴、阳极电解液pH值分别为 10,3 的条件下通电修复 49 d,总耗电量为 19385 kW·h,折合单位能耗为 48.5 kW·h/m3.中试区域内地下水中氯化物平均去除率达 42.5%;土壤中氯离子平均去除率达 37.5%,1.5,2.5 m深度土壤中氯离子平均去除率分别为45.4%,23.4%,上层去除率高于下层.原位电动修复技术实现了污染土壤及地下水的同步修复,且并未带入新的化学物质,避免造成二次污染,是一种高效低耗、环境友好的修复技术,具有广阔的应用前景.
Abstract
A pilot study of in-situ electrokinetic remediation technology was conducted for a site contaminated with high concentrations of chloride ions.The pilot study lasted for 49 days,with a voltage gradient 1 V/cm,and the pH values for cathode and anode electrolytes of 10 and 3 respectively.The total power consumption was 9385 kW·h,which equivalent to a unit energy consumption of 48.5 kW·h/m3.The average removal rate of chloride in groundwater was 42.5%,whereas the removal rates of chloride ions in soil of 1.5 m and 2.5 m depth were 45.4%and 23.4%,respectively.The results showed the removal rate in the upper layer soil was higher than that in the lower layer.The pilot study illustrated that in-situ electrokinetic remediation technology can achieve simultaneous remediation of soil and groundwater without introducing new chemicals to cause secondary pollution.It is an efficient,low-consumption,environmentally friendly technology with a potential of broad application prospects.
关键词
原位电动修复/氯离子污染/土壤及地下水修复Key words
In-situ electrokinetic remediation/Chloride ion pollution/Soil and groundwater remediation引用本文复制引用
基金项目
国家重点研发计划(2018YFC1802005)
出版年
2024
NETL
NSTL
万方数据