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.
Highlights
IntroductionHumans are the major geological and geomorphological agents in the Anthropocene [1]
Previous researches already reported ratio of capture width over well diameter (d2/d1) increased depending on the hydraulic conductivity difference (Kw/Ka) (Figure 2b)
We proposed a novel triple transect configuration considering the removal efficiency as well as the constraints in the well construction field
Summary
Humans are the major geological and geomorphological agents in the Anthropocene [1]. The geologic media provides the foundation of human activity and variety of resources for sustaining human life, including groundwater. Groundwater is continuously replenished in the geologic media during the natural water cycle and has adequate water quality as drinking water by the removal of pollutants during the movement through the geologic media [2]. The groundwater is developed from the alluvial terrain as well as hard rock terrain and used as a major water resource in regions such as islands and mountains around the world [3]. The contamination of geologic media by industrial activities has been a serious problem threatening the stable supply of groundwater resources and human safety
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
