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dc.contributor.authorKwelle, Chidiadi Harten_US
dc.date.accessioned2014-08-13T14:40:11Z
dc.date.available2014-08-13T14:40:11Z
dc.date.issued1985en_US
dc.identifier.urihttp://hdl.handle.net/10919/50039
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 problem
dc.format.extentx, 234 leavesen_US
dc.format.mimetypeapplication/pdfen_US
dc.publisherVirginia Polytechnic Institute and State Universityen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subject.lccLD5655.V855 1985.K834en_US
dc.subject.lcshSewage -- Purification -- Activated sludge processen_US
dc.subject.lcshCarbon, Activated -- Testingen_US
dc.titleAn investigation of the effects of the addition of powdered activated carbon to the activated sludge of cellulose acetate manufacturing wastewateren_US
dc.typeThesisen_US
dc.contributor.departmentSanitary Engineeringen_US
dc.description.degreeMaster of Scienceen_US
dc.identifier.oclc12763299en_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineSanitary Engineeringen_US
dc.contributor.committeechairRandall, Clifford W.en_US
dc.contributor.committeememberHoehn, Robert C.en_US
dc.contributor.committeememberNovak, John T.en_US
dc.type.dcmitypeTexten_US
dc.description.adminincomplete_metadataen_US


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