Anoxic Cattail Wetland for Treatment of Water Associated with Coal Mining Activities

Duddleston, Khrystyne N.; Fritz, Eva; Hendricks, Albert C.; Roddenberry, K.

doi:10.21000/jasmr92010249

Cited by 8 publications

(7 citation statements)

References 3 publications

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“…Systems of this type were constructed in Virginia in 1988 (Hendricks, 1991) and 1990 (Duddleston et al, 1992). Kepler and McCleary (1994) independently developed and documented similar systems in Pennsylvania, coining the SAPS term.…”

Section: Successive Alkalinity‐producing Systemsmentioning

confidence: 99%

Factors Affecting Alkalinity Generation by Successive Alkalinity‐Producing Systems: Regression Analysis

Jage¹,

Zipper

Noble

2001

J of Env Quality

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Use of successive alkalinity-producing systems (SAPS) for treatment of acidic mine drainage (AMD) has grown in recent years. However, inconsistent performance has hampered widespread acceptance of this technology. This research was conducted to determine the influence of system design and influent AMD chemistry on net alkalinity generation by SAPS. Monthly observations were obtained from eight SAPS cells in southern West Virginia and southwestern Virginia. Analysis of these data revealed strong, positive correlations between net alkalinity generation and three variables: the natural log of limestone residence time, influent dissolved Fe concentration, and influent non-Mn acidity. A statistical model was constructed to describe SAPS performance. Subsequent analysis of data obtained from five systems in western Pennsylvania (calibration data set) was used to reevaluate the model form, and the statistical model was adjusted using the combined data sets. Limestone residence time exhibited a strong, positive logarithmic correlation with net alkalinity generation, indicating net alkalinity generation occurs most rapidly within the first few hours of AMD-limestone contact and additional residence time yields diminishing gains in treatment. Influent Fe and non-Mn acidity concentrations both show strong positive linear relationships with net alkalinity generation, reflecting the increased solubility of limestone under acidic conditions. These relationships were present in the original and the calibration data sets, separately, and in the statistical model derived from the combined data set. In the combined data set, these three factors accounted for 68% of the variability in SAPS systems performance.

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Section: Successive Alkalinity‐producing Systemsmentioning

confidence: 99%

Factors Affecting Alkalinity Generation by Successive Alkalinity‐Producing Systems: Regression Analysis

Jage¹,

Zipper

Noble

2001

J of Env Quality

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“…Vertical flow passive-treatment systems combine the treatment mechanisms of anaerobic wetlands and ALDs in an attempt to compensate for the limitations of both (Hendricks 1991;Duddleston et al 1992;Kepler and McCleary 1994) (Figure 11). Vertical-flow systems have also been called SAPS (for "successive alkalinity producing systems," Kepler and McCleary 1994) and RAPS (for "reducing and alkalinity producing systems," Watzlaf et al 2000).…”

Section: Vertical Flow Systemsmentioning

confidence: 99%

Passive Treatment of Acid Mine Drainage

Zipper¹,

Skousen²,

Jage³

2014

Acid Mine Drainage, Rock Drainage, and Acid Sulfate Soils

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“…Working at a site in Virginia, Duddleston et al (1992) demonstrated the capability of wetland systems, similar to those constructed at Ely Creek, to remediate circumneutral coal-mine discharge waters by increasing water-column alkalinity, which had the effect of reducing acid-soluble metal (Fe and Mn) concentrations. Working in western Pennsylvania, Kepler and McCleary (1994) demonstrated the efficacy of these systems when applied to mine discharge water with pHs as low as 3.0.…”

Section: Water Qualitymentioning

confidence: 99%

The Ecotoxicological Recovery of Ely Creek and Tributaries (Lee County, Va) After Remediation of Acid Mine Drainage

Simon

Cherry

Currie

et al. 2006

Environ Monit Assess

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The Ely Creek watershed (Lee County, VA) was determined in 1995 to be the most negatively affected by acid mine drainage (AMD) within the Virginia coalfield. This determination led the US Army Corps of Engineers to design and build passive wetland remediation systems at two major AMD seeps affecting Ely Creek. This study was undertaken to determine if ecological recovery had occurred in Ely Creek. The results indicate that remediation had a positive effect on all monitoring sites downstream of the remediated AMD seeps. At the site most impacted by AMD, mean pH was 2.93 prior to remediation and improved to 7.14 in 2004. Benthic macroinvertebrate surveys revealed that one AMD influenced site had increased taxa richness from zero taxa in 1997 to 24 in 2004. While in situ testing of Asian clams resulted in zero survival at five of seven AMD influenced sites prior to remediation, some clams survived at all sites after. Clam survival was found to be significantly less than upstream references at only two sites, both downstream of un-mitigated AMD seeps in 2004. An ecotoxicological rating (ETR) system that combined ten biotic and abiotic parameters was developed as an indicator of the ecological status for each study site. A comparison of ETRs from before and after remediation demonstrated that all sites downstream of the remediation had experienced some level of recovery. Although the remediation has improved the ecological health of Ely Creek, un-mitigated AMD discharges are still negatively impacting the watershed.

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Anoxic Cattail Wetland for Treatment of Water Associated with Coal Mining Activities

Cited by 8 publications

References 3 publications

Factors Affecting Alkalinity Generation by Successive Alkalinity‐Producing Systems: Regression Analysis

Factors Affecting Alkalinity Generation by Successive Alkalinity‐Producing Systems: Regression Analysis

Passive Treatment of Acid Mine Drainage

The Ecotoxicological Recovery of Ely Creek and Tributaries (Lee County, Va) After Remediation of Acid Mine Drainage

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