某化工行业污染地块土壤石油烃修复技术研究  

Effectiveness Assesment of Remediation Technologies for Petroleum Contaminated Soil in a Chemical Industry Plot

作　　者：徐桂茹 陈钊 冉雨灵 XU Guiru;CHEN Zhao;RAN Yuling(China Shipping Environment Technology(Shanghai)Co.,Ltd.,Shanghai 200135,China)

机构地区：[1]中海环境科技(上海)股份有限公司,上海200135

出　　处：《上海船舶运输科学研究所学报》2022年第3期63-67,74,共6页Journal of Shanghai Ship and Shipping Research Institute

摘　　要：为降低石油烃污染对土壤环境质量的危害,介绍5种石油烃修复技术,分析这些技术的工作原理、适用条件和局限性。在此基础上,结合化工行业污染地块的特点,选取生物堆肥和化学氧化修复技术,对其可行性进行分析,并研究生物堆肥时间、化学氧化药剂组合和投加浓度对石油烃去除效果的影响。试验结果表明:生物最佳堆肥时间为200 d,石油烃的降解率可达72.8%~73.1%,质量浓度能减至低于修复目标值;采用10种药剂组合进行氧化处理,去除效率均超过75%,其中采用过硫酸钠(100 g/L)与氢氧化钠(13.5 g/L)组合处理,石油烃未检出,去除效果最佳。采用生物堆肥和化学氧化技术进行化工行业污染地块石油烃修复是可行的。This paper introduces five petroleum hydrocarbon remediation technologies,and analyzes the fundamental principle,application and limitation of each remediation technology.According to the characteristics of the polluted land,bio-compost and chemical oxidation remediation technologies are selected for feasibility analysis.Tests are performed to examine removal effects of petroleum hydrocarbon with different schemes,which include the biological composting days,different chemical oxidation combinations and dosage concentration proportion.The experimental results show that the optimal bio-composting time is 200 days,where the degradation rate of petroleum hydrocarbon reaches 72.8%~73.1%,making the residual pollution lower than the target value;The removal efficiencies of chemical oxidation method using 10 different agent-dosing combination are tested and they are all exceed 75%.When the sodium persulfate(100 g/L)+sodium hydroxide(13.5 g/L)is used as oxidant concentration treatment,the residual pollution goes below detectable threshold.Both bio-compost and chemical oxidation remediation technologies are feasible for petroleum hydrocarbon remediation in the chemical industry plot.

关 键 词：石油烃污染 土壤修复 生物堆肥时间 氧化药剂组合优化 

分 类 号：X53[环境科学与工程—环境工程] X78