[A-GE28] Energy-Environment-Water Nexus and Sustainable Development

[AGE28-06] Utilizing innovative well pipe to improve predictions of solute transport and characterization with 3D hydrogeological parameters in an aquifer

*BU-SHENG LEE¹, Hong-RU Lin¹, Jet-Chau Wen^2,3 (1.Graduate School of Safety Health and Environmental Engineering, National Yunlin University of Science and Technology, 123, Section 3, University Road, Douliou, Yunlin 64002, Taiwan (R.O.C.), 2.Department and Graduate School of Safety Health and Environmental Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin 64002, Taiwan (R.O.C.), 3.Research Center for Soil and Water Resources and Natural Disaster Prevention (SWAN), 123, Section 3, University Road, Douliou, Yunlin 64002, Taiwan(R.O.C.))

Keywords:Solute transport, Longitudinal dispersion coefficient, Dispersion coefficient, Hydraulic conductivity, Specific storage coefficient, Tracer test

Groundwater flow and solute transport predictions in porous geological media have received persistent attention over the past several decades, for the significant impacts on assessing groundwater contamination hazards, design of effective remediation systems, as well as on water supply and resource management issues. Porous media is widely acknowledged to be heterogeneous from pore to regional scales, and detailed mapping of spatial heterogeneity in hydrogeological parameters renders the accurate predictions of groundwater flow and contaminant migration as difficult tasks in complex subsurface environments. Dispersion occurs in porous media due to an interaction between molecular diffusion and small-scale velocity contrasts within and between pores. It is a tensor but is typically described by the two principal components: the longitudinal dispersion coefficient (KL) and the transverse dispersion coefficient (KT). In the past few decades, numerous efforts have been dedicated to mapping the spatial distribution of Hydraulic conductivity (K) and specific storage coefficient (Ss). K and Ss are among the essential hydrogeological parameters. In order to describe the heterogeneity of aquifers and get more effectively predict solute transport. This study through the partitioning well pipe gets the three-dimensional field of hydrogeological parameters and estimation of longitudinal and transverse dispersivities in an experimental plume devised in a laboratory sandbox by tracer test. This research will significantly contribute to the future analysis of changes in regional flow fields, groundwater replenishment patterns, and control of the diffusion of underground pollution.