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| Remediation Material of FeS2/Fe0 and Field Enhanced Remediation Technology for Chromium Contaminated Soil |
| Received:November 24, 2020 Revised:November 24, 2020 |
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| DOI：doi：10.3969/j.issn.1007-7545.2020.12.016 |
| KeyWord:FeS2/Fe0 material; chromium contaminated soil; microwave field; mechanical force field |
| Author | Institution |
| LI Qi |
中南大学冶金与环境学院 |
| YANG Wei-chun |
中南大学冶金与环境学院 |
| LI Shu-peng |
北京建工环境修复股份有限公司 |
| ZHEN Sheng-li |
北京高能时代环境技术股份有限公司 |
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| Abstract: |
| Taking contaminated soil of a chromium chemical site in Gansu as treatment object, chromium reduction remediation material of FeS2/Fe0 was prepared by high-energy ball milling of pyrite with iron powder. Effect of the material on reduction remediation of chromium-contaminated soil and method of field enhanced remediation of chromium contaminated soil were explored. The results show that removal rate of contaminated soil with Cr(Ⅵ) content of 448.1 mg/kg is 99.1% after 30 days by FeS2/Fe0 remediation. Microwave field can effectively shorten the remediation period, and the combined action of mechanical force and microwave field can reduce contaminated soil with total Cr(Ⅵ) content of 4 995 mg/kg to 1.9 mg/kg. |
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