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Journal of Environmental Quality Abstract -

Flow Calculations for Household Effluent Disposal in Elevated Sand Mounds1


This article in JEQ

  1. Vol. 10 No. 3, p. 311-314
    Received: July 11, 1980

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  1. T. D. Mott,
  2. D. D. Fritton and
  3. G. W. Petersen2



Elevated sand mound disposal systems that are used in Pennsylvania for disposal of household effluents are frequently malfunctioning. A method of evaluating the ability of a soil to transmit effluent from an elevated sand mound to a ground-water system was developed by separating the effluent flow into horizontal and vertical components. In all cases, it was assumed that effluent was not limited by infiltration at the sand-soil surface or by the ability of the groundwater system to accept the effluent. Horizontal flow was calculated using Darcy's law written in cylindrical coordinates. Vertical flow was calculated assuming that a single, slowly permeable layer of known thickness limited flow. It was concluded that lateral flow alone cannot remove household effluents fast enough for the typical Pennsylvania design. On the other hand, the vertical-flow component alone can account for the design flow when the flow-limiting layer is not too thick.

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