IMPACT OF SURROUNDING HIGH-PERMEABLE POROUS MEDIA ON REMEDIATION EFFICIENCY OF MULTI-SCREEN WELLS

YE Yu; XU Wenyu; LU Chunhui; XIE Yifan; LUO Jian

doi:10.13205/j.hjgc.202204007

Volume 40 Issue 4

Apr. 2022

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YE Yu, XU Wenyu, LU Chunhui, XIE Yifan, LUO Jian. IMPACT OF SURROUNDING HIGH-PERMEABLE POROUS MEDIA ON REMEDIATION EFFICIENCY OF MULTI-SCREEN WELLS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(4): 43-49,146. doi: 10.13205/j.hjgc.202204007

Citation:

YE Yu, XU Wenyu, LU Chunhui, XIE Yifan, LUO Jian. IMPACT OF SURROUNDING HIGH-PERMEABLE POROUS MEDIA ON REMEDIATION EFFICIENCY OF MULTI-SCREEN WELLS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(4): 43-49,146. doi: 10.13205/j.hjgc.202204007

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IMPACT OF SURROUNDING HIGH-PERMEABLE POROUS MEDIA ON REMEDIATION EFFICIENCY OF MULTI-SCREEN WELLS

doi: 10.13205/j.hjgc.202204007

YE Yu^1,2,
XU Wenyu^1,2,
LU Chunhui^{2,3
,
,},
XIE Yifan^1,2,
LUO Jian⁴

1. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210098, China;
2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098, China;
3. Yangtze Institute for Conservation and Development, Hohai University, Nanjing 210098, China;
4. School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta 30331, GA, USA

Received Date: 2021-07-29
Available Online: 2022-07-06

Abstract

Abstract

To investigate the impact of surrounding heterogenous media on the remediation efficiency of the multi-screen wells, two-dimensional numerical simulations were performed. In the numerical model, high-permeable lenses were constructed around the well and the location, size and hydraulic conductivity of the lenses were changed in different setups. The results showed that the surrounding high-permeable lenses and their position, size and hydraulic conductivity had impact on the remediation efficiency of the multi-screen wells, and its value depended on the effect of flow focusing and meandering introduced by the high-permeable lenses. The high-permeable porous media surrounding the well could significantly enhance remediation efficiency. The optimal injection interval changed due to the existence of heterogeneity surrounding the well. In general, optimal injection interval was enhanced with the surrounding high-permeable porous media. This study provides theoretical instruction for the groundwater remediation using multi-screen wells in heterogeneous aquifer. Furthermore, it offers a new idea on further enhancing remediation efficiency by the multi-screen wells.
- groundwater remediation,
- multi-screen well,
- high-permeable lens,
- optimal injection interval,
- numerical simulation

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References(23)

References

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