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An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment
This thesis contains the results and discussion of an exploratory investigation into the application of Crossflow Microfiltration (CFMF) for solid/liquid separation in biological wastewater treatment systems. The principal objective of the study was to assess the influence of CFMF on the performance...
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| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2016
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| _version_ | 1867613140176338944 |
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| access_status_str | Open Access |
| author | Bailey, Andrew Douglas |
| author_browse | Bailey, Andrew Douglas |
| author_facet | Bailey, Andrew Douglas |
| author_sort | Bailey, Andrew Douglas |
| collection | Thesis |
| description | This thesis contains the results and discussion of an exploratory investigation into the application of Crossflow Microfiltration (CFMF) for solid/liquid separation in biological wastewater treatment systems. The principal objective of the study was to assess the influence of CFMF on the performance of identified biological wastewater treatment systems. It was not the objective to optimise filtration performance. A literature review indicated that the crossflow mode of filtration has been widely accepted as a unit operation in the fermentation industry. The filtration mode is now being applied not only for solid/liquid separation but also for separations on a molecular and ionic level. Very few applications of crossflow filtration in the context of biological wastewater treatment solid/liquid separation are reported in the literature. The reasons for this limited experience would appear to be the scale involved and the perceived high costs; separations in the fermentation industry are usually conducted at relatively small scale (laboratory or pilot-scale) and involve high-value products, justifying high capital and operating costs. Also, the high level of separation performance attained is perhaps not necessary for many wastewater treatment applications. No doubt these reservations are largely valid. However, these arguments cannot be applied equally to all filtration methods and wastewater treatment schemes. For example, the costs of microfiltration are substantially less than ultrafiltration or reverse osmosis, and in certain cases effluents with extremely low suspended solids contents may be required. In the light of these observations an investigation of CFMF for solid/liquid separation in biological wastewater treatment systems appears justified. Two biological treatment systems were selected for study: the Upflow Anaerobic Sludge Bed (UASB) reactor and the Activated Sludge system. The envisaged benefits accruing from the application of CFMF were different in each case. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/21915 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:31:24.573Z |
| license_str | Not specified — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository |
| publishDate | 2016 |
| publishDateRange | 2016 |
| publishDateSort | 2016 |
| publisher | Department of Chemical Engineering |
| publisherStr | Department of Chemical Engineering |
| record_format | dspace |
| source_str | UCTD — University of Cape Town Open Access Repository |
| spelling | oai:open.uct.ac.za:11427/21915 An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment Bailey, Andrew Douglas Filters and filtration Water - Purification - Filtration Chemical Engineering This thesis contains the results and discussion of an exploratory investigation into the application of Crossflow Microfiltration (CFMF) for solid/liquid separation in biological wastewater treatment systems. The principal objective of the study was to assess the influence of CFMF on the performance of identified biological wastewater treatment systems. It was not the objective to optimise filtration performance. A literature review indicated that the crossflow mode of filtration has been widely accepted as a unit operation in the fermentation industry. The filtration mode is now being applied not only for solid/liquid separation but also for separations on a molecular and ionic level. Very few applications of crossflow filtration in the context of biological wastewater treatment solid/liquid separation are reported in the literature. The reasons for this limited experience would appear to be the scale involved and the perceived high costs; separations in the fermentation industry are usually conducted at relatively small scale (laboratory or pilot-scale) and involve high-value products, justifying high capital and operating costs. Also, the high level of separation performance attained is perhaps not necessary for many wastewater treatment applications. No doubt these reservations are largely valid. However, these arguments cannot be applied equally to all filtration methods and wastewater treatment schemes. For example, the costs of microfiltration are substantially less than ultrafiltration or reverse osmosis, and in certain cases effluents with extremely low suspended solids contents may be required. In the light of these observations an investigation of CFMF for solid/liquid separation in biological wastewater treatment systems appears justified. Two biological treatment systems were selected for study: the Upflow Anaerobic Sludge Bed (UASB) reactor and the Activated Sludge system. The envisaged benefits accruing from the application of CFMF were different in each case. 2016-09-25T16:49:02Z 2016-09-25T16:49:02Z 1989 Master Thesis Masters MSc (Eng) http://hdl.handle.net/11427/21915 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Filters and filtration Water - Purification - Filtration Chemical Engineering Bailey, Andrew Douglas An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment |
| thesis_degree_str | Master's |
| title | An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment |
| title_full | An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment |
| title_fullStr | An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment |
| title_full_unstemmed | An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment |
| title_short | An exploratory investigation of crossflow microfiltration for solid/liquid separation in biological wastewater treatment |
| title_sort | exploratory investigation of crossflow microfiltration for solid liquid separation in biological wastewater treatment |
| topic | Filters and filtration Water - Purification - Filtration Chemical Engineering |
| url | http://hdl.handle.net/11427/21915 |
| work_keys_str_mv | AT baileyandrewdouglas anexploratoryinvestigationofcrossflowmicrofiltrationforsolidliquidseparationinbiologicalwastewatertreatment AT baileyandrewdouglas exploratoryinvestigationofcrossflowmicrofiltrationforsolidliquidseparationinbiologicalwastewatertreatment |