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RANNEY® RIVERBANK FILTRATION
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Properly installed Ranney® Collector Wells near surface water
sources can be operated to induce surface water recharge of ground water. The stream bottom sediments
and aquifer materials filter the recharged water. Because of slow infiltration rates and pore size of
the aquifer material, turbidity and pathogen removal can be significant. Additionally, organic degradation
occurs at the water / sediment interface. The US EPA notes that “A Ranney®
Collector Wells has the advantage of being the most environmentally sound intake system because it does not
have any direct impact on the waterway.”
Riverbank filtration can replace / support other water treatment while:
- Reducing treatment residuals by removing particulates / turbidity
- Reducing operation and maintenance costs
- Attenuating rapid changes in water quality & temperature
- Eliminating nuisance organisms such as zebra mussels
- Natural filtration of organisms such as Cryptosporidium and Giardia
- Reduction of organics and disinfection byproducts precursors (DBPs)
Siting and Design Considerations:
- Travel Time in Aquifer
- Filtration capacity of the Suface Water / Aquifer Interface
- Aquifer characteristics and grain-size
- Rate of Infiltration / Recharge
- Source Water Quality
Siting and Design Considerations:
- Detailed Hydrogeologic / Geochemical Evaluation
- Assessment of Local Water Quality and Quantity
- Quantification of Infiltration Capacity
- Assessment of Source Water Resources
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Ranney® Collector Wells,
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a Layne Christensen Technology
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6360 Huntley Road
Columbus, OH 43229
Toll Free: 1-877-4-Ranney (1-877-472-6639)
Office: 614.888.6263
Fax: 614.888.9208
E-mail: ranney@collectorwells.com
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