摘要
本文通过模拟修复实验,研究了类Fenton试剂和活化过硫酸钠对焦化厂和炼油厂多环芳烃污染土壤的修复效果。结果表明,焦化厂土壤经类Fenton和活化过硫酸钠处理后最佳去除率分别为90%和97%,炼油厂土壤经处理后的最佳去除率则分别为86%和91%。两种土壤均表现为活化过硫酸钠的处理效果优于类Fenton试剂,但达到最佳去除效果时所需的氧化剂剂量不同。且两种氧化剂较安全,不会造成二次污染。氧化剂对NAP、ACY、ACE、ANT和Ba P等PAHs去除效果较好,而FLA、B[b/k]F等PAHs的去除率相对较低。焦化厂土壤经处理后,低环PAHs的去除率比高环高出5%~39%,而炼油厂土壤的高环PAHs去除率比低环高出3%~13%。反应后,土壤中有机质的含量也相应下降。同等剂量下,活化过硫酸钠处理后有机质的降解率比类Fenton试剂高。
In this paper, the remedial effects of modified Fenton and activated Sodium per-sulfate on the soils contaminated by PAHs from coking plant and oil refinery were studied with a a simulation test. The results showed that that for the coking plant soil, the best removal rate of PAHs was 90% by the modified Fenton and 97% by the activated sodium per-sulfate respectively, while in the oil refinery soil that was 86% and 91% respectively. Activated Sodium per-sulfate was better than modified Fenton, but the optimal dosage was different when reaching the best removal efficiency. Both of oxidants were friendly environmental, which would not cause secondary pollution. The oxidants could easily remove NAP, ACY, ACE,ANT and Ba P, but FLA and B[b/k]F were relatively reluctant to the chemical oxidants. For the coking plant soil, the removal of light PAHs was higher than the heavy PAHs for about 5%~39%. But the oil refinery soil showed the opposite result-the removal of heavy PAHs was higher than the light PAHs for about 3%~13%. The content of total organic matter also fell off after the reaction. Activated Sodium per-sulfate showed a more drastic decline of content than the modified Fenton with the equal dosage.
出处
《山东农业大学学报（自然科学版）》
CSCD
2016年第3期378-382,共5页
Journal of Shandong Agricultural University：Natural Science Edition
基金
国家自然科学基金重点项目:城市LUCC对多环芳烃多介质循环影响机理及模拟研究(No.41130525)
