Passive Treatment of Acid-Mine Drainage with Vertical-Flow Systems C. Zipper, Extension Specialist, Crop and Soil Environmental Sciences, Virginia Tech; and C. Jage, Land Trust Representative, New Jersey Conservation Foundation, Far Hills, NJ Publication Number 460-133, Posted June 2001

Figure 2

Figure 2. Flow chart for selecting a passive treatment system based on influent water quality. Additional treatment may be required for Mn if present at elevated concentration. (Adapted from Hedin and others 1994a; Skousen and others 1998; Skousen and others, 2000).

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