Evaluation of activated carbon processes for removing trihalomethane precursors from a surface water impoundment

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dc.contributor.authorLavinder, Steven Roberten
dc.contributor.committeechairHoehn, Robert C.en
dc.contributor.committeememberNovak, John T.en
dc.contributor.committeememberSroeylok, Vernonen
dc.contributor.departmentEnvironmental Engineeringen
dc.date.accessioned2014-03-14T21:50:00Zen
dc.date.adate2012-11-17en
dc.date.available2014-03-14T21:50:00Zen
dc.date.issued1987-06-05en
dc.date.rdate2012-11-17en
dc.date.sdate2012-11-17en
dc.description.abstractA pilot plant study was conducted in Newport News, Virginia to investigate the effectiveness of powdered activated carbon [PAC] and granular activated carbon [GAC], with and without preoxidation, for reducing trihalomethane [THM] precursor concentrations in Harwood's Mill Reservoir water. Preoxidation with ozone followed by GAC is referred to as the "biological activated carbon" [BAC] process. This study showed that the GAC and BAC processes obtained the same level of organic removal; however, BAC would provide longer bed life and require less carbon than the GAC process. PAC treatment of alum coagulated water provided significantly higher TOC and THMFP removals than alum coagulation alone. The use of a preoxidant (ozone) with PAC slightly improved the organic removal efficiency. While treatment by PAC increased THMFP removals, it was not as efficient as the GAC and BAC processes. UV absorbance measured at 254 nm and TOC were found to be good surrogates for THMFP in the GAC column, but not in the BAC column.en
dc.description.degreeMaster of Scienceen
dc.format.extentxiv, 176 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-11172012-040344en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11172012-040344/en
dc.identifier.urihttp://hdl.handle.net/10919/45820en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1987.L384.pdfen
dc.relation.isformatofOCLC# 16796358en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1987.L384en
dc.subject.lcshCarbon, Activateden
dc.subject.lcshTrihalomethanesen
dc.subject.lcshWater -- Purification -- Adsorptionen
dc.titleEvaluation of activated carbon processes for removing trihalomethane precursors from a surface water impoundmenten
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineEnvironmental Planningen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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