环境修复
地下水
环境科学
地下水修复
土壤污染
污染
过硫酸盐
环境工程
环境化学
石油
空气喷射
人体净化
可渗透反应墙
废物管理
化学
土壤水分
土壤科学
工程类
生态学
生物化学
岩土工程
有机化学
催化作用
生物
作者
Kun-Hao Wei,Jie Ma,Beidou Xi,Mao-Hong Yu,Jun Cui,Baoliang Chen,Yang Li,Qingbao Gu,Xiao-Song He
标识
DOI:10.1016/j.jhazmat.2022.128738
摘要
Accidental oil leaks and spills can often result in severe soil and groundwater pollution. In situ chemical oxidation (ISCO) is a powerful and efficient remediation technology. In this review, the applications and recent advances of three commonly applied in-situ oxidants (hydrogen peroxide, persulfate, and permanganate), and the gap in remediation efficiency between lab-scale and field-scale applications is critically assessed. Feasible improvements for these measures, especially solutions for the 'rebound effect', are discussed. The removal efficiencies reported in 108 research articles related to petroleum-contaminated soil and groundwater were analyzed. The average remediation efficiency of groundwater (82.7%) by the three oxidants was higher than that of soil (65.8%). A number of factors, including non-aqueous phase liquids, adsorption effect, the aging process of contaminants, low-permeability zones, and vapor migration resulted in a decrease in the remediation efficiency and caused the residual contaminants to rebound from 19.1% of the original content to 57.7%. However, the average remediation efficiency of ISCO can be increased from 40.9% to 75.5% when combined with other techniques. In the future, improving the utilization efficiency of reactive species and enhancing the contact efficiency between oxidants and petroleum contaminants will be worthy of attention. Multi-technical combinations, such as the ISCO coupled with phase-transfer, viscosity control, controlled release or natural attenuation, can be effective methods to solve the rebound problem.
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