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LEACHATE COLLECTION IN LANDFILLS: STEADY CASE
Citation:
McEnroe, B. AND P. Schroeder. LEACHATE COLLECTION IN LANDFILLS: STEADY CASE. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-88/566 (NTIS PB91191387), 1988.
Description:
This paper analyzes the performance of landfill leachate collection systems with low-permeability soil liners under steady-state conditions. lgebraic equations and graphs are presented for predicting the average and maximum saturated depth on the liner, the location of the maximum saturated depth, and the leakage rate. These equations and graphs are developed from numerical solutions of the governing differential equation. ome surprisingly simple relationships are shown to be applicable over much of the practical range. n general, saturated depth over the liner is sensitive to four parameters: he liner slope, the drainage length or drain spacing, the saturated hydraulic conductivity of the drain layer, and the difference between the impingement rate on the liner and the liner's hydraulic conductivity. nder normal conditions, leakage rate is sensitive only to the hydraulic conductivity of the liner. ithin the practical range, liner thickness has little effect on either saturated depth or leakage rate.
