Configuration of non-pumping reactive wells considering minimum well spacing

Ja Young Goo, Jae Hyun Kim, Young Jae Lee, Soonjae Lee

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

A non-pumping reactive well (NPRW) is a subsurface structure that prevents contaminant spread using many non-pumping wells containing reactive media. For the construction of an effective NPRW, a sufficiently small spacing between wells is an important design factor to prevent contaminant leakage. However, close well construction is not recommended because of concerns about the decreased stability of adjacent wells under field conditions. In this research, we proposed a sawtooth array of NPRW as a practical configuration to minimize well spacing while meeting stability requirements in the field. To evaluate the performance of the novel NPRW configurations, a numerical modeling was conducted considering different well diameters and well spacings and their performance was compared taking into account the number of wells and the mass of the reactive material. The comparison results showed that the sawtooth configuration was more practical than a line of wells. The performance curve of NPRWs with the saw-toothed configuration was constructed from the relationship between the contaminant removal and configuration components (diameter and spacing of the well). This can be used to predict the contaminant removal performance of NPRWs with a sawtooth array.

Original languageEnglish
Article number11408
JournalApplied Sciences (Switzerland)
Volume11
Issue number23
DOIs
Publication statusPublished - 2021 Dec 1

Bibliographical note

Funding Information:
Funding: This work was supported by the Korea Environmental Industry & Technology Institute (KEITI) through the underground environmental pollution risk management technology development business program, funded by the Korea Ministry of Environment (MOE) [grant number 2018002470002, ARQ202101728001]; and the National Research Foundation of Korea (NRF) grant funded by the Korea Ministry of Science and ICT [grant number NRF-2017R1C1B3009500].

Funding Information:
Acknowledgments: This work was supported by the Korea Environmental Industry & Technology Institute (KEITI) and the National Research Foundation of Korea (NRF).

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • Minimum well spacing
  • Non-pumping reactive well
  • Performance curve
  • Practical configuration
  • Sawtooth array
  • Well diameter

ASJC Scopus subject areas

  • General Materials Science
  • Instrumentation
  • General Engineering
  • Process Chemistry and Technology
  • Computer Science Applications
  • Fluid Flow and Transfer Processes

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