Modification of a biosand filter in the northern region of Ghana
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2008.
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| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2008
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| Online Access: | http://hdl.handle.net/1721.1/43885 |
| _version_ | 1826199596046483456 |
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| author | Kikkawa, Izumi |
| author2 | Susan E. Murcott. |
| author_facet | Susan E. Murcott. Kikkawa, Izumi |
| author_sort | Kikkawa, Izumi |
| collection | MIT |
| description | Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2008. |
| first_indexed | 2024-09-23T11:22:26Z |
| format | Thesis |
| id | mit-1721.1/43885 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T11:22:26Z |
| publishDate | 2008 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/438852019-04-10T23:28:22Z Modification of a biosand filter in the northern region of Ghana Kikkawa, Izumi Susan E. Murcott. Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. Massachusetts Institute of Technology. Dept. of Civil and Environmental Engineering. Civil and Environmental Engineering. Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2008. Includes bibliographical references (p. 88-92). Four local plastic design (LPD) BSFs were constructed in Northern Region, Ghana, to test and evaluate an experimental modification of the LPD BSF for treatment of highly turbid water. Modifications of the LPD BSFs were made in order to provide an additional "biolayer," the core layer of a BSF where most removal and degradation of pathogens occur. This adjustment was carried out by providing an additional diffuser basin, with an additional layer of sand in it. Along with two unmodified LPD BSFs, two modified LPD BSFs were built: one with an additional 5-cm sand layer, one with an additional 10-cm sand layer. Filter ripening was confirmed through an increase in turbidity removal after 13 days. All four LPD BSFs removed turbidity by an average of 92-95 % after Day 13, with average effluents of 10 - 16 TU (14 - 22 NTU). The modified BSFs showed slightly higher removal of turbidity after 27 days of operation. This could be an indication that the modified BSFs potentially withstand greater operational variation, or that the modified BSFs require less frequent cleaning. The average total coliform removal after 11 days was 87 % with an average effluent concentration of 430 cfu/100 ml from an influent concentration of 15,000 cfu/100 ml. Concurrently, 30 BSFs (HydrAidTM BioSand Water Filter) that were installed in a local village were tested for flow rate, turbidity, and E. coli/total coliform bacteria. These HydrAid BSFs showed an average turbidity removal of 87 %, and an average total coliform removal of 95 %, with average effluents of 2.9 NTU for turbidity and 710 cfu/100 ml of total coliform. Further research, such as testing the BSFs with influent of higher turbidity, which is typical in Northern Region, Ghana, is recommended to evaluate the effectiveness of the HydrAid BSF. by Izumi Kikkawa. M.Eng. 2008-12-11T18:45:36Z 2008-12-11T18:45:36Z 2008 2008 Thesis http://hdl.handle.net/1721.1/43885 263685081 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 127, [1] p. application/pdf f-gh--- Massachusetts Institute of Technology |
| spellingShingle | Civil and Environmental Engineering. Kikkawa, Izumi Modification of a biosand filter in the northern region of Ghana |
| title | Modification of a biosand filter in the northern region of Ghana |
| title_full | Modification of a biosand filter in the northern region of Ghana |
| title_fullStr | Modification of a biosand filter in the northern region of Ghana |
| title_full_unstemmed | Modification of a biosand filter in the northern region of Ghana |
| title_short | Modification of a biosand filter in the northern region of Ghana |
| title_sort | modification of a biosand filter in the northern region of ghana |
| topic | Civil and Environmental Engineering. |
| url | http://hdl.handle.net/1721.1/43885 |
| work_keys_str_mv | AT kikkawaizumi modificationofabiosandfilterinthenorthernregionofghana |