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Laboratory Assessment of Filter Materials
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Objective:  Laboratory testing to indentify industrial product/byproduct filter materials having the potential to remove mixed nutrient and pesticide contaminants from agricultural drainage waters.  To be feasible for use, the most promising industrial products/byproducts must also be proven to have the hydraulic capacity to allow a sufficient rate of drainage water flow.

Approach:   Batch tests have been used to screen a wide variety of industrial products/byproducts with respect to nitrate, phosphate, and atrazine removal potential.  Additional batch tests provided insight on the nutrient/pesticide removal effectiveness and efficiency for the most promising materials isolated during the screening phase.  Saturated hydraulic conductivity tests were employed to evaluate the water flow capacity of the most promising materials.  Saturated solute transport column tests were then conducted to assess the contaminant removal abilities of the best filter materials under conditions more realistically similar to those of an actual filter treatment system.




Cooperators:  SMI_PS, Inc., North American Hoganas, Inc.

For additional Information:   

Barry J. Allred
USDA/ARS - Soil Drainage Research Unit
590 Woody Hayes Drive, RM. 234
Columbus, Ohio  43210
Phone:  614-292-9806
Fax:  614-292-9448