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Organic Contaminant Behavior during Groundwater Recharge

Paul V. Roberts, Perry L. McCarty, Martin Reinhard and Joan Schreiner
Journal (Water Pollution Control Federation)
Vol. 52, No. 1 (Jan., 1980), pp. 161-172
Stable URL: http://www.jstor.org/stable/25040559
Page Count: 12
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Organic Contaminant Behavior during Groundwater Recharge
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Abstract

Concentration changes of organic trace contaminants were measured in an aquifer that was being recharged by direct injection of reclaimed water. The reclaimed water was obtained by advanced treatment of secondary effluent, including lime addition, coagulation, and sedimentation; air stripping; recarbonation; ozonation; and sand filtration. Naphthalene showed evidence of biodegradation in the aquifer. The field retention capacity of chlorobenzene is approximately 0.32 g per ${\rm m}^{3}$ aquifer in equilibrium with a concentration of 4 μg/l in the water. The ratio of chlorobenzene transport relative to water movement is approximately one thirty-sixth. Chloroform was transported more rapidly than chlorobenzene, approximately one-fifth as fast as water. The approach shows promise for predicting water quality behavior in a large-scale groundwater recharge project based on short-term observations near the injection well. Concentrations were in the range of 0.1 to 10 μg/l.

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