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The treatment of yeast factory effluent by an anaerobic submerged filter
This thesis reports the results of an experimental investigation into the treatment of yeast wastes by biological digestion in an anaerobic submerged filter. The waste to be treated was very strong, with a COD of 59 000 mg/l and was almost entirely soluble, with a high organic content. Experiments s...
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| Format: | Thesis |
| Language: | English |
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Department of Chemical Engineering
2016
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| _version_ | 1867614206277189632 |
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| access_status_str | Open Access |
| author | Warren, Michael Pavely |
| author2 | Hansford, Geoffrey Spearing |
| author_browse | Hansford, Geoffrey Spearing Warren, Michael Pavely |
| author_facet | Hansford, Geoffrey Spearing Warren, Michael Pavely |
| author_sort | Warren, Michael Pavely |
| collection | Thesis |
| description | This thesis reports the results of an experimental investigation into the treatment of yeast wastes by biological digestion in an anaerobic submerged filter. The waste to be treated was very strong, with a COD of 59 000 mg/l and was almost entirely soluble, with a high organic content. Experiments showed that the waste could be treated by the anaerobic submerged filter, with a maximum loading applicable for extended periods of 10 kg COD/(m³day), based on the void volume of the filter. The reduction in COD effected by the filter at these loadings varied between 40 and 60% of the applied COD, of which only approximately 70% was biologically degradable. Loadings of up to 16 kg COD/(m³day) were applied with 40% COD reduction, but digestion at these loadings seemed unstable and could not be continued for long periods. Diluted yeast waste was used during the investigation in order to control loading rates and it was necessary to add sodium bicarbonate to the feed to give an alkalinity greater than 2 000 mg/l as calcium carbonate to buffer digestion at the optimum pH. This thesis also reports the establishment of an operating procedure for a laboratory scale anaerobic submerged filter, and proposes recommendations for further work. This work is aimed at improving the performance of the filter by modifying the operating procedure and increasing the understanding of the digestion process by studies of a fundamental nature. |
| format | Thesis |
| id | oai:open.uct.ac.za:11427/17709 |
| institution | University of Cape Town (South Africa) |
| language | eng |
| last_indexed | 2026-06-10T12:48:21.481Z |
| 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:11427/17709 The treatment of yeast factory effluent by an anaerobic submerged filter Warren, Michael Pavely Hansford, Geoffrey Spearing Chemical Engineering Waste products This thesis reports the results of an experimental investigation into the treatment of yeast wastes by biological digestion in an anaerobic submerged filter. The waste to be treated was very strong, with a COD of 59 000 mg/l and was almost entirely soluble, with a high organic content. Experiments showed that the waste could be treated by the anaerobic submerged filter, with a maximum loading applicable for extended periods of 10 kg COD/(m³day), based on the void volume of the filter. The reduction in COD effected by the filter at these loadings varied between 40 and 60% of the applied COD, of which only approximately 70% was biologically degradable. Loadings of up to 16 kg COD/(m³day) were applied with 40% COD reduction, but digestion at these loadings seemed unstable and could not be continued for long periods. Diluted yeast waste was used during the investigation in order to control loading rates and it was necessary to add sodium bicarbonate to the feed to give an alkalinity greater than 2 000 mg/l as calcium carbonate to buffer digestion at the optimum pH. This thesis also reports the establishment of an operating procedure for a laboratory scale anaerobic submerged filter, and proposes recommendations for further work. This work is aimed at improving the performance of the filter by modifying the operating procedure and increasing the understanding of the digestion process by studies of a fundamental nature. 2016-03-14T07:16:32Z 2016-03-14T07:16:32Z 1972 Master Thesis Masters MSc http://hdl.handle.net/11427/17709 eng application/pdf Department of Chemical Engineering Faculty of Engineering and the Built Environment University of Cape Town |
| spellingShingle | Chemical Engineering Waste products Warren, Michael Pavely The treatment of yeast factory effluent by an anaerobic submerged filter |
| thesis_degree_str | Master's |
| title | The treatment of yeast factory effluent by an anaerobic submerged filter |
| title_full | The treatment of yeast factory effluent by an anaerobic submerged filter |
| title_fullStr | The treatment of yeast factory effluent by an anaerobic submerged filter |
| title_full_unstemmed | The treatment of yeast factory effluent by an anaerobic submerged filter |
| title_short | The treatment of yeast factory effluent by an anaerobic submerged filter |
| title_sort | treatment of yeast factory effluent by an anaerobic submerged filter |
| topic | Chemical Engineering Waste products |
| url | http://hdl.handle.net/11427/17709 |
| work_keys_str_mv | AT warrenmichaelpavely thetreatmentofyeastfactoryeffluentbyananaerobicsubmergedfilter AT warrenmichaelpavely treatmentofyeastfactoryeffluentbyananaerobicsubmergedfilter |