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dc.contributor.authorKolda, Bridget C.en_US
dc.date.accessioned2014-03-14T21:27:24Z
dc.date.available2014-03-14T21:27:24Z
dc.date.issued1995-07-15en_US
dc.identifier.otheretd-01172009-063552en_US
dc.identifier.urihttp://hdl.handle.net/10919/40662
dc.description.abstract

This research investigated the impact of sludge type, polymer type (percent mole charge), dosage, mixing rate, and solution ionic strength on bound water content of sludge flocs. Data determined to evaluate the extent of dewatering included: percent dry solids, bulk density, bound water content (determined by dilatometric method), floc density (determined by isopycnic centrifugation), and cake solids concentrations. Calculated floc densities and bound water contents were compared with measured values. The polymer mole charge had marginal impact on bound water content. The optimal polymer dose as determined by dose curves did not necessarily result in the least bound water content. The mixing rate did not have an impact on bound water content of the chemical sludge, but did have an impact on bound water content of the biological sludge. However, the percentage of total water removed that was due to bound water removal was not affected by rate of mixing, polymer mole charge, or polymer dose. Altering solution ionic strength did not appear to improve bound water removal.

The calculated bound water content values determined using measured floc densities were consistently greater than the measured bound water content values determined by dilatometric method. The bound water content per the dilatometric method did not account for all the water present in the floes as determined by the isopycnic centrifugation method.

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dc.format.mediumBTDen_US
dc.publisherVirginia Techen_US
dc.relation.haspartLD5655.V855_1995.K653.pdfen_US
dc.subjectbound water contenten_US
dc.subject.lccLD5655.V855 1995.K653en_US
dc.titleImpact of polymer type, dosage, and mixing regime and sludge type on sludge floc propertiesen_US
dc.typeThesisen_US
dc.contributor.departmentEnvironmental Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineEnvironmental Planningen_US
dc.contributor.committeechairKnocke, William R.en_US
dc.contributor.committeememberNovak, John T.en_US
dc.contributor.committeememberRandall, Clifford W.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01172009-063552/en_US
dc.date.sdate2009-01-17en_US
dc.date.rdate2009-01-17
dc.date.adate2009-01-17en_US


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