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Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems
Includes bibliographical references.
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| Main Author: | |
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| Other Authors: | |
| Format: | Thesis |
| Language: | English |
| Published: |
Department of Civil Engineering
2014
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| _version_ | 1867613879004037121 |
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| access_status_str | Open Access |
| author | Mebrahtu, Michael Kidane |
| author2 | Ekama, George A |
| author_browse | Ekama, George A Mebrahtu, Michael Kidane |
| author_facet | Ekama, George A Mebrahtu, Michael Kidane |
| author_sort | Mebrahtu, Michael Kidane |
| collection | Thesis |
| description | Includes bibliographical references. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/5025 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:43:09.370Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Department of Civil Engineering |
| publisherStr | Department of Civil Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/5025 Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems Mebrahtu, Michael Kidane Ekama, George A Wentzel, Mark C Civil Engineering Includes bibliographical references. 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. 2014-07-31T10:26:42Z 2014-07-31T10:26:42Z 2007 Master Thesis Masters MSc http://hdl.handle.net/11427/5025 eng application/pdf Department of Civil Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Civil Engineering Mebrahtu, Michael Kidane Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| thesis_degree_str | Master's |
| title | Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| title_full | Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| title_fullStr | Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| title_full_unstemmed | Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| title_short | Aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| title_sort | aerobic digestion of waste activated sludge from biological nutrient removal activated sludge systems |
| topic | Civil Engineering |
| url | http://hdl.handle.net/11427/5025 |
| work_keys_str_mv | AT mebrahtumichaelkidane aerobicdigestionofwasteactivatedsludgefrombiologicalnutrientremovalactivatedsludgesystems |