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| Joint Treatment Model of Heterotopic Restoration and Barrier Prevention Control of Groundwater Pollution Sites |
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Received:April 01, 2024
Revised:May 18, 2024
Accepted:May 20, 2024
Published Online:November 17, 2024
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| DOI：doi：10.3969/j.issn.1007-7545.2024.12.014 |
| KeyWord:groundwater remediation; waterproof curtain; contaminated sites; thermal desorption repair |
| Author | Institution |
| ZHENG Tingyu |
森特士兴集团股份有限公司 |
| YAO Yuan |
森特士兴集团股份有限公司 |
| LIU Rui |
云南大学生态与环境学院高原湖泊生态与治理研究院 |
| YE Yuan |
森特士兴集团股份有限公司 |
| ZHU Yan |
森特士兴集团股份有限公司 |
| LIU Yutao |
森特士兴集团股份有限公司 |
| SONG Tantan |
森特士兴集团股份有限公司 |
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| Abstract: |
| Address to incomplete groundwater remediation and long disposal cycles, a new treatment model was proposed based on the organic pollution of groundwater in a certain steelmaking site. In this model, the waterproof curtain was first built on the boundary of groundwater polluted area, and then the polluted groundwater and aquifer medium soil were cleaned up by the way of foundation pit excavation. The polluted groundwater was collected and treated by foundation pit dewatering, and the aquifer medium soil was repaired by ectopic thermal desorption. The results show that the permeability coefficient of the waterproof curtain is less than 1×10-7 cm/s, which avoids the diffusion of contaminated groundwater during the remediation process. After restoration, the concentration of benzo (a) pyrene in groundwater and soil is lower than the detection limit of 0.004 μg/L and 0.1 mg/kg respectively, and the removal rate of pollutants is close to 100%. The joint treatment model has the advantages of thorough pollution restoration and high efficiency, and opens up a new idea for the site groundwater restoration. |
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