土壤中石油类污染物的化学氧化去除研究  

Removal of Petroleum Contaminants in Soil Through Chemical Oxidation

作　　者：孙燕英[1] 陈鸿汉[1] 何炜[1] 高文谦[1] 

机构地区：[1]中国地质大学(北京)水资源与环境工程北京市重点实验室

出　　处：《土壤》2008年第1期130-134,共5页Soils

基　　金：北京市教委产学研项目资助

摘　　要：用H2O2氧化处理柴油重度污染土壤，研究了土壤初始含油量、H2O2投加量、土壤pH值以及催化剂等的影响。结果表明，室温条件下向油污土壤中直接投加氧化剂的修复方法可行：H2O2的经济添加量为400ml／kg土，低含油（20000mg／kg）污土的去除率可达70．0％以上，高含油（50000mg／kg）污土的去除率可达96．0％以上：pH5～8范围内土壤介质对该法的应用影响不大;如用芬顿试剂处理高含油（50000mg／kg）污土，H2O2只需100ml／kg土或200ml／kg土，就能达到85.0％以上的去油效果。An experiment of treating heavily diesel-contaminated soil with hydrogen peroxide was carried out to study effects of initial oil content in the soil, H2O2 dosage, soil pH, and catalyst on removal of diesel in soil. Results showed that it was feasible to remedy diesel-contaminated soil by adding oxidant directly at room temperature. The application of H2O2 at an economical rate, 400 ml/kg soil was adequate to remove over 70% of the diesel from the soil, 20000 mg/kg in diesel content （low）, and over 96% from the soil, 50000 mg/kg in diesel content （high）. Soil pH in the range of 5-8 had little effect on efficiency of the oxidation technology. IfFenton Reagent was used, only 100 or 200 ml/kg soil H2O2 was needed to remove more than 85% of the diesel in highly diesel-contaminated soil.

关 键 词：化学氧化 石油类污染物 柴油重度污染土壤 过氧化氢 芬顿试剂 

分 类 号：X131.3[环境科学与工程—环境科学] X53