Design and Optimization of a Fully-Penetrating Riverbank Filtration Well Scheme at a Fully-Penetrating River Based on Analytical Methods

Abstract

In order to maintain the sustainable development of pumping wells in riverbank filtration (RBF) and simultaneously minimize the possible negative effects induced, it is vital to design and subsequently optimize the engineering parameters scientifically. An optimizing method named Five-Step Optimizing Method was established by using analytic methods (Mirror-Image Method, Dupuit Equation and the Interference Well Group Method, etc.) systematically in this study considering both the maximum allowable drawdown of the groundwater level and the water demand as the constraint conditions, followed by a case study along the Songhua River of northeast China. It contained three parameters (number of wells, distance between wells, and distance between well and river) for optimizing in the method, in which the well type, depth and radius were beforehand designed and fixed, without the need of optimizing. The interference between wells was found to be a decisive factor that significantly impacts the optimizing effort of all the three parameters. The distance between the well and the river was another decisive factor impacting the recharge from the river and subsequently, the well water yield. There would be more than one optional scheme sometimes in the optimized result, while it's not yet difficult in practice to single out the optimal one considering both the field setting and the water demand. The established method proved to be applicable in the case study.

Combining Karhunen–Loève expansion and stochastic modeling for probabilistic delineation of well capture zones in heterogeneous aquifers

“…To address the demand for enhanced accuracy and reliability in well capture zone protection strategies, significant progress has been achieved in the field of hydrogeology and OPEN ACCESS EDITED BY Tianming Huang, Chinese Academy of Sciences (CAS), China contaminant transport (Jiang et al, 2019;Zhu et al, 2019). Among the approaches, the Particle Tracking (PT) method (Rock and Kupfersberger, 2002;Barry et al, 2009;Nalarajan et al, 2019) has gained prominence among hydrogeologists.…”

Microbial Community Structure of Arsenic-Bearing Groundwater Environment in the Riverbank Filtration Zone

“…Driven by riverside exploitation, strong interactions occur between river water and groundwater [1][2][3]. The riverbank filtration zone, as the key zone of interaction, affects the migration and transformation of pollutants in the process of river water infiltration [4][5][6][7]. Arsenic is a typical toxic carcinogen.…”