Technical Workshop

807 - Riverbank Filtration for Water Supply in the United States - Chittaranjan Ray & Matthew Reed

Wednesday, June 6
8:30 AM - 12:00 PM
Location: Greenway EF

Riverbank filtration (RBF) is a simple, yet effective treatment technology that uses the natural soil and aquifer media to remove various pollutants from river water during induced infiltration of river water to pumping wells. In alluvial aquifers, when wells are placed sufficiently close to a river and pumped, the drawdown caused at the well induces the river water to flow towards the well screens. During soil and aquifer passage, various pollutants from river water are removed. For a bank filtration system to operate, there must be a source present (river or lake), the quality of the water must be relatively good, and there has to be a hydraulic connection between the river/lake and the aquifer (in other words in confined aquifer settings RBF is not effective). The quality of the source water and local hydrogeologic conditions are expected to influence the quality of filtrate water produced from RBF systems. Planning, design, installation, monitoring, and evaluation aspects of RBF systems with reference to specific US sites will be considered.

Chittaranjan Ray, PhD

Professor and Director
Nebraska Water Center, University of Nebraska-Lincoln

Chittaranjan Ray is director of the Nebraska Water Center at the University of Nebraska-Lincoln and a professional civil engineer. Until July, Ray was interim director for the University of Hawaii’s Water Resources Research Center and Environmental Center, while also serving as a full professor in the Department of Civil and Environmental Engineering. His research interests and areas of expertise include water quality engineering, water quality assessment with special emphasis on groundwater, pesticides, flow and transport processes in variably-saturated media, and surface and groundwater interaction.
Previously, Ray worked for the Illinois State Water Survey and was a staff engineer with the groundwater consulting firm Geraghty and Miller, Inc. He received a doctorate in civil engineering from the University of Illinois at Urbana-Champaign and a master’s from Texas Tech University. Ray’s extensive international experience has led to research fellowships in Nepal, India, Bangladesh, Japan, Czech Republic, and Germany. Additionally, he has authored five books, multiple book chapters and dozens of journal articles and serves in an editorial capacity for the Journal of Irrigation and Drainage and Journal of Clean Technology and Environmental Policy.


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