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The trapping of litter in waterways by means of flow retardation and screens
Thesis (M. Ing.) -- University of Stellenbosch, 1997.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867613939494289409 |
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| access_status_str | Open Access |
| author | Compion, Jacobus Kotze |
| author2 | Rooseboom, A. |
| author_browse | Compion, Jacobus Kotze Rooseboom, A. |
| author_facet | Rooseboom, A. Compion, Jacobus Kotze |
| author_sort | Compion, Jacobus Kotze |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (M. Ing.) -- University of Stellenbosch, 1997. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/55760 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:44:06.995Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/55760 The trapping of litter in waterways by means of flow retardation and screens Compion, Jacobus Kotze Rooseboom, A. Stellenbosch University. Faculty of Engineering. Department of Civil Engineering. Litter (Trash) Urban runoff Dissertations -- Civil engineering UCTD Thesis (M. Ing.) -- University of Stellenbosch, 1997. ENGLISH ABSTRACT: Solid litter constitutes a major part of pollution in urban stormwater runoff. This litter is not only unsightly, but also harmful to the natural water environment. Sightings of birds strangled in plastic bags are only one such an example. Studies by Melbourne Water (City of Coburg, Australia) have indicated that plastic based products are the largest contributors of solid litter in urban stormawater runoff (approximately 62%), paper products (10%), miscellaneous (5%) and glass (2%). Although secondary "litter" (heavy metals, sediment, leaf matter and nutrients) and tertiary "litter" (faecal coliforms and pathogens) are also considered important pollutants, it is beyond the scope of this investigation. Pollution of the recipient water-body via litter can be prevented by either trapping the litter in a stream (water-body) or by taking preventative measures such as street sweeping and public awareness campaigns. Most litter traps consist primarily of a screen and/or a settling basin, many of which have insufficient self cleansing capacity and require frequent maintenance to prevent excessive blockage and consequent upstream flooding during storm events. The risk of blockage is reduced by increasing the spacing between the bars of a screen, but results in reduced trapping efficiency. Limited success with existing stormwater litter traps create a need for the development of a new litter trap that would have the following desired properties: • low risk of flooding due to blockages • economical design • simple mnintenance procedure • low cleaning frequency • low energy loss • a non-blocking screen • robust and vandal-proof 2012-08-27T11:37:13Z 2012-08-27T11:37:13Z 1997 Thesis http://hdl.handle.net/10019.1/55760 en_ZA Stellenbosch University 189 pages : illustrations application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Litter (Trash) Urban runoff Dissertations -- Civil engineering UCTD Compion, Jacobus Kotze The trapping of litter in waterways by means of flow retardation and screens |
| title | The trapping of litter in waterways by means of flow retardation and screens |
| title_full | The trapping of litter in waterways by means of flow retardation and screens |
| title_fullStr | The trapping of litter in waterways by means of flow retardation and screens |
| title_full_unstemmed | The trapping of litter in waterways by means of flow retardation and screens |
| title_short | The trapping of litter in waterways by means of flow retardation and screens |
| title_sort | trapping of litter in waterways by means of flow retardation and screens |
| topic | Litter (Trash) Urban runoff Dissertations -- Civil engineering UCTD |
| url | http://hdl.handle.net/10019.1/55760 |
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