Effectiveness of Capture Zones Generated by Intermittent Pumping of a PV-Powered Pump-and-Treat System without Energy Storage


A common technology to remediate and/or contain contaminated groundwater is pump-and-treat remediation (P&T). Traditionally, P&T systems have been designed to operate continuously to achieve steady-state capture zones, for which large amounts of energy are required. Green and sustainable remediation (GSR) is emerging as a viable method to minimize the adverse effects of remediation on the environment. One of the challenges associated with photovoltaic- (PV-) powered P&T systems is the assessment of their performance given the intermittent nature of the power availability. This article characterizes the hydraulic containment effectiveness of a PV-powered P&T system without energy storage using data collected at two different remediation sites, a Dry-Cleaning Environmental Response Trust Fund site in Rolla, Missouri, and the Former Nebraska Ordnance Plant near Mead, Nebraska. Additionally, a method to estimate the effectiveness of the hydraulic containment as a function of the total volume of groundwater expected to be extracted is being proposed. Two transient and a continuously pumped capture zones were modeled using Visual MODFLOW® 2012.1 along with MODPATH and compared. The study shows that smaller capture zones will be generated from intermittent pumping when compared to continuous pumping.


Geosciences and Geological and Petroleum Engineering

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Article - Journal

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© 2013 John Wiley & Sons Inc., All rights reserved.

Publication Date

01 Jun 2013