Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems

 

Show simple item record

dc.contributor.advisor Ekama, George A en_ZA
dc.contributor.advisor Wentzel, Mark C en_ZA
dc.contributor.author Mebrahtu, Michael Kidane en_ZA
dc.date.accessioned 2014-07-31T10:26:42Z
dc.date.available 2014-07-31T10:26:42Z
dc.date.issued 2007 en_ZA
dc.identifier.citation Mebrahtu, M. 2007. Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/5025
dc.description Includes bibliographical references.
dc.description.abstract Waste activated sludge (WAS) is a biological sludge that contains biodegradable and non-biodegradable volatile suspended solids (VSS) and non-volatile inorgainic suspended solids (ISS). Stabilization for safe disposal of the WAS is a process of paramount importance at wastewater treatment plants (WWTPs). Hence, aerobic digestion of the WAS from biological nutrient removal (BNR) activated sludge (AS) systems was carried out under batch conditions to (1) measure changes in nitrogen and phosphorus concentrations in solid and liquid phases during aerobic batch digestion tests (2) simulate the parent system with Activated Sludge Model No. 2 (ASM-2) in AQUASIM computer program to obtain the initial conditions for batch test simulation (3) simulate the batch aerobic digestion process with ASM-2 and compare with experimental data (4) develop VSS-based and total suspended solids (TSS) (with the addition of ISS to the VSS-based) batch reactor and steady state models for aerobic digestion of nitrification denitrification biological excess phosphorus removel (NDBEPR) WAS based on the individual biomass die-off rates of phosphorus accumulating organisms (PAOs) and ordinary heterotrophic organisms (OHOs), and (5) evaluate the ASM-2 simulation results with steady state aerobic batch digestion model. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Civil Engineering en_ZA
dc.title Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Civil Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Mebrahtu, M. K. (2007). <i>Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Civil Engineering. Retrieved from http://hdl.handle.net/11427/5025 en_ZA
dc.identifier.chicagocitation Mebrahtu, Michael Kidane. <i>"Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Civil Engineering, 2007. http://hdl.handle.net/11427/5025 en_ZA
dc.identifier.vancouvercitation Mebrahtu MK. Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Civil Engineering, 2007 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/5025 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Mebrahtu, Michael Kidane AB - Waste activated sludge (WAS) is a biological sludge that contains biodegradable and non-biodegradable volatile suspended solids (VSS) and non-volatile inorgainic suspended solids (ISS). Stabilization for safe disposal of the WAS is a process of paramount importance at wastewater treatment plants (WWTPs). Hence, aerobic digestion of the WAS from biological nutrient removal (BNR) activated sludge (AS) systems was carried out under batch conditions to (1) measure changes in nitrogen and phosphorus concentrations in solid and liquid phases during aerobic batch digestion tests (2) simulate the parent system with Activated Sludge Model No. 2 (ASM-2) in AQUASIM computer program to obtain the initial conditions for batch test simulation (3) simulate the batch aerobic digestion process with ASM-2 and compare with experimental data (4) develop VSS-based and total suspended solids (TSS) (with the addition of ISS to the VSS-based) batch reactor and steady state models for aerobic digestion of nitrification denitrification biological excess phosphorus removel (NDBEPR) WAS based on the individual biomass die-off rates of phosphorus accumulating organisms (PAOs) and ordinary heterotrophic organisms (OHOs), and (5) evaluate the ASM-2 simulation results with steady state aerobic batch digestion model. DA - 2007 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2007 T1 - Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems TI - Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems UR - http://hdl.handle.net/11427/5025 ER - en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record