电热耦合过硫酸盐修复技术在多氯联苯污染土壤中的应用
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v7i12.2363
Abstract
电热耦合过硫酸盐是一种高效处理低渗透场地氯代有机污染土壤的修复技术。本文研究了电热耦合过硫酸盐修复土壤多氯联苯(PCBs)的效果和机制。结果表明：过硫酸盐投加浓度越高,直流电压强度越大,过硫酸盐电动迁移效果越好,PCBs去除率越高。PCBs通过热脱附、挥发和被过硫酸盐氧化降解去除。PCBs氯代数目越少,去除率越高。投加50g/L过硫酸盐,施加2V/cm直流电压,PCBs平均去除率最高(37.1%),且去除单位质量PCBs的能耗较低(2405kWh/kg)。
Keywords
多氯联苯；过硫酸盐；电动迁移；能耗
Funding
上海市环境科学研究院青年科技创新基金资助项目“低渗透氯代有机污染场地电热耦合过硫酸盐修复技术研究”(CX2021140332)；国家重点研发计划“原位热脱附-蒸汽强化抽提耦合修复技术与装备研发”(2019YFC1805702)。
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