. A bench scale evaluation of organic substrates for use in constructed wetlands for the treatment of acid mine drainage. Acid mine drainage; Heavy metals; Constructed wetlands; Wetlands. T==T==T==T \ "'I I I I I 111 1 I I Lactate Added _ I I ) 25 20 15 10 5 E 0 10 „ 30 SO „ 70 „ 90 .„ 110 ,„ 130 ,..150 .„ 170 4„ 190^210 ___230 20 40 60 80 100 120 140 160 180 200 22© LU o CL ELAPSED TIME (DAYS) Columm 6 30 25 20 - 15 - 10 - 5 -. 25 20 - 15 - 10 - S 10 30 .„ 50 „ 70 SO 4~110,„130.,_150«K170.„190™210„-230 20 40 60 80 100 120 140 160 180 200 220 ELAPSED TIME (DAYS) Pore Volume Fe (x10) Al (x
. A bench scale evaluation of organic substrates for use in constructed wetlands for the treatment of acid mine drainage. Acid mine drainage; Heavy metals; Constructed wetlands; Wetlands. T==T==T==T \ "'I I I I I 111 1 I I Lactate Added _ I I ) 25 20 15 10 5 E 0 10 „ 30 SO „ 70 „ 90 .„ 110 ,„ 130 ,..150 .„ 170 4„ 190^210 ___230 20 40 60 80 100 120 140 160 180 200 22© LU o CL ELAPSED TIME (DAYS) Columm 6 30 25 20 - 15 - 10 - 5 -. 25 20 - 15 - 10 - S 10 30 .„ 50 „ 70 SO 4~110,„130.,_150«K170.„190™210„-230 20 40 60 80 100 120 140 160 180 200 220 ELAPSED TIME (DAYS) Pore Volume Fe (x10) Al (x10) < lj o o a No Observations Av. Influent pH Av. Fe Influent(x10) Av. Al Influent(xtO) Figure 4b. Substrate mean influent and effluent pH, Al and Fe concentrations. 1 i. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Schafer and Associates; Schafer and Associates; Montana. Abandoned Mine Reclamation Bureau. Bozeman, Mont. : The Associates
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