An investigation of the effects of the addition of powdered activated carbon to the activated sludge of cellulose acetate manufacturing wastewater

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dc.contributor.authorKwelle, Chidiadi Harten
dc.contributor.committeechairRandall, Clifford W.en
dc.contributor.committeememberHoehn, Robert C.en
dc.contributor.committeememberNovak, John T.en
dc.contributor.departmentSanitary Engineeringen
dc.date.accessioned2014-08-13T14:40:11Zen
dc.date.available2014-08-13T14:40:11Zen
dc.date.issued1985en
dc.description.abstractEquilibrium powdered activated carbon (PAC) concentrations of 20, 160, and 280 mg/L in activated sludge reactors treating cellulose acetate manufacturing wastewater were found to enhance substrate removal. The improved substrate removal as measured by COD averaged 20 percent. The apparent mechanism of improved removal was the stimulation of greater biomass growth. PAC addition increased the oxygen uptake rate (OUR), the observed cell yield coefficient (Ybbs) and the first order substrate removal coefficient (Kb) of the activated sludge system, which were operated at a temperature of 18°C and a biological solids retention times of fourteen days. The addition of PAC also improved the sludge settleability but this resulted in higher effluent suspended solids concentration because zone settling Velocity was the primary factor affecting effluent suspended solids. A type of activated sludge bulking, known as jelly formation, plagued the biological reactors but nitrogen addition appeared to solve the problemen
dc.description.adminincomplete_metadataen
dc.description.degreeMaster of Scienceen
dc.format.extentx, 234 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/50039en
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 12763299en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1985.K834en
dc.subject.lcshSewage -- Purification -- Activated sludge processen
dc.subject.lcshCarbon, Activated -- Testingen
dc.titleAn investigation of the effects of the addition of powdered activated carbon to the activated sludge of cellulose acetate manufacturing wastewateren
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineSanitary Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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