中文摘要：

利用人工污染土壤,研究了高锰酸钾对4种不同土壤中菲和芘的氧化修复效果。结果表明,当高锰酸钾浓度为33.33mmol·L^-1时,土壤中菲和芘的氧化去除率达到最大。高锰酸钾氧化去除率不仅与高锰酸钾浓度有关,还与土壤性质和老化时间有关。土壤有机质含量的增加会降低高锰酸钾对土壤中菲和芘的氧化去除率;随着老化时间的增加,高锰酸钾的氧化去除率逐渐降低。老化40d后,4种土壤中菲和芘的氧化去除率显著降低,菲的氧化去除率在14%～67%之间,芘的氧化去除率在61%～84%之间。高锰酸钾氧化前后,4种土壤中有机质含量下降范围为0.77%～9.21%。从土壤有机质含量来看,高锰酸钾氧化修复多环芳烃污染土壤对土壤质量影响较小,具有较好的应用前景。

英文摘要：

Remediation of phenanthrene and pyrene in four contaminated soils using potassium permanganate oxidation treatment as a method was investigated in this study. The degradation of phenanthrene and pyrene depended strongly on the dose of oxidan（tKMnO4）. The greatest degradation of phenanthrene and pyrene was achieved at a KMnO4 concentration of 33.33 mmol·L^-1. The results showed that the degradation efficiency was not only related to the concentration of potassium permanganate, but also to soil properties and contact time（aging）of a hydrophobic organic compound（HOC）in soils. The degradation efficiency of phenanthrene and pyrene by potassium permanganate treatment decreased with increasing soil organic matter content and aging time. The degradation efficiency of phenanthrene and pyrene in soils decreased significantly after aging for 40 d, ranging from 14% to 67% and from 61% to 84% for phenanthrene and pyrene, respectively. The impact of potassium permanganate oxidation on soil organic matter content was also investigated in this paper. Soil organic matter contents of four soils in this study were reduced by 0.77% to 9.21% after potassium permanganate oxidation. From the aspect of soil organic matter content, oxidation treatment of soils contaminated by polycyclic aromatic hydrocarbons with potassium permanganate has little effect on soil quality and could be a promising remediation method for practical use in the future.