Show simple item record

dc.contributor.authorWhichard, David P.en
dc.date.accessioned2014-03-14T20:42:59Zen
dc.date.available2014-03-14T20:42:59Zen
dc.date.issued2001-07-16en
dc.identifier.otheretd-08082001-103610en
dc.identifier.urihttp://hdl.handle.net/10919/34412en
dc.description.abstractThe purpose of this research was to characterize a flushed dairy manure wastewater and to develop the kinetic and stoichiometric parameters associated with nitrogen removal from the wastewater, as well as to demonstrate experimental and simulated nitrogen removal from the wastewater. The characterization showed that all the wastewaters had carbon to nitrogen ratios large enough for biological nitrogen removal. Analysis of carbon to phosphorus ratios showed that enough carbon is available for phosphorus removal but enough may not be available for both nitrogen and phosphorous removal in anaerobically pretreated wastewater. In addition, kinetic and stoichiometric parameters were determined for the biological nitrogen removal in sequencing batch reactors for the dairy manure wastewater. Results showed that many parameters are similar to those of municipal wastewater treatment systems. This characterization and the derived kinetic and stoichiometric parameters provided some of the information necessary for development of a nitrogen removal process in a sequencing batch reactor. Lab scale treatment of a 1:2 dilution of the anaerobically pretreated wastewater was demonstrated. Treatment was able to achieve between 89 and 93% removal of soluble inorganic nitrogen as well as up to 98% removal of biodegradable soluble and colloidal COD. In addition, a solids removal efficiency of between 79 and 94% was achieved. The lab scale treatment study demonstrated that sequencing batch reactors are capable of achieving high nitrogen removal on wastewaters with the carbon to nitrogen ratios of the dairy manure wastewater. Model simulations of the treatment process were used to develop a sensitivity analysis of the reactor feed configuration as well as the kinetic and stoichiometric parameters. The analysis of the feed configuration demonstrated the advantage of decreasing the amount of feed that is fed in the last feed period so that the effluent nitrate will be minimized. The analysis indicated that the autotrophic growth rate is one of the most important parameters to measure while error in the heterotrophic decay or yield values can lead to miscalculations of oxygen required for treatment.en
dc.publisherVirginia Techen
dc.relation.haspartDavid_Whichard_ETD.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectdenitrificationen
dc.subjectdairy manure wastewateren
dc.subjectnitrificationen
dc.subjectsequencing batch reactoren
dc.titleNitrogen Removal From Dairy Manure Wastewater Using Sequencing Batch Reactorsen
dc.typeThesisen
dc.contributor.departmentEnvironmental Engineeringen
dc.description.degreeMaster of Scienceen
thesis.degree.nameMaster of Scienceen
thesis.degree.levelmastersen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.disciplineEnvironmental Planningen
dc.contributor.committeechairLove, Nancy G.en
dc.contributor.committeememberWiddowson, Mark A.en
dc.contributor.committeememberKnowlton, Katharine F.en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08082001-103610/en
dc.date.sdate2001-08-08en
dc.date.rdate2002-08-08en
dc.date.adate2001-08-08en


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record