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dc.contributor.authorJage, Christopher Raymonden_US
dc.date.accessioned2014-03-14T20:32:17Z
dc.date.available2014-03-14T20:32:17Z
dc.date.issued2000-02-18en_US
dc.identifier.otheretd-03022000-14440056en_US
dc.identifier.urihttp://hdl.handle.net/10919/31390
dc.description.abstractWater Quality Based Design Guidelines for Successive Alkalinity-Producing Systems Used in the Treatment of Acidic Mine Drainage by Christopher Raymond Jage Carl Zipper, Chair Crop and Soil Environmental Sciences (ABSTRACT) Successive Alkalinity-Producing Systems (SAPS) have proven to be a viable alternative to chemical treatment for renovating acidic mine drainage (AMD). The lack of water quality based design guidelines, however, is believed to be a cause of the variability of SAPS performance in the field. This study monitored eight SAPS systems for the purpose of determining the effect of influent water quality and system design on system performance. Monthly water quality data were obtained for each system over periods ranging from 3 to 5 years. All systems demonstrated an ability to generate alkalinity and/or neutralize acidity. These systems revealed significant correlations between net alkalinity production and log residence time (r = 0.7414), influent total iron (r = 0.7357), and influent non-manganese acidity (r = 0.6919). From these relationships, a calibrated model was developed for predicting SAPS net alkalinity generation. As a compliment to the field study, a series of laboratory-scale SAPS columns were studied for a period of 12 months to examine the effect of residence time on system performance and to monitor the internal changes in water quality. The columns were operated at residence times of 17, 30, 60 hours with three replicates each and were subject to ambient temperature fluctuations. Data revealed that systems with residence times below 25 hours in the organic layer were unable to adequately reduce dissolved oxygen concentrations in the organic layer to prevent limestone armoring. The results of this study suggest water quality based guidelines for designing SAPS systems.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartChapter3-3.pdfen_US
dc.relation.haspartChapter3-2.pdfen_US
dc.relation.haspartChapter3-1.pdfen_US
dc.relation.haspartAppendixB.pdfen_US
dc.relation.haspartLitCited.pdfen_US
dc.relation.haspartFrontMatter.pdfen_US
dc.relation.haspartChapter1.pdfen_US
dc.relation.haspartChapter4-2.pdfen_US
dc.relation.haspartChapter4-1.pdfen_US
dc.relation.haspartVita.pdfen_US
dc.relation.haspartAppendixA.pdfen_US
dc.relation.haspartChapter3-6.pdfen_US
dc.relation.haspartChapter3-8.pdfen_US
dc.relation.haspartChapter3-7.pdfen_US
dc.relation.haspartChapter3-9.pdfen_US
dc.relation.haspartChapter6.pdfen_US
dc.relation.haspartChapter2.pdfen_US
dc.relation.haspartChapter4-3.pdfen_US
dc.relation.haspartChapter5.pdfen_US
dc.relation.haspartChapter3-5.pdfen_US
dc.relation.haspartChapter3-4.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectsub-surface flow wetlandsen_US
dc.subjectlimestone armoringen_US
dc.subjectpassive treatmenten_US
dc.titleWater Quality Based Design Guidelines for Successive Alkalinity-Producing Systems Used in the Treatment of Acidic Mine Drainageen_US
dc.typeThesisen_US
dc.contributor.departmentCrop and Soil Environmental Sciencesen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
dc.contributor.committeechairZipper, Carl E.en_US
dc.contributor.committeememberZelazny, Lucian W.en_US
dc.contributor.committeememberHendricks, Albert C.en_US
dc.contributor.committeememberDaniels, Walter Leeen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03022000-14440056/en_US
dc.date.sdate2000-03-02en_US
dc.date.rdate2001-03-11
dc.date.adate2000-03-11en_US


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