Package water supply systems have been developed by Oxfam and Imperial College for emergency situations such as refugee camps. A component of these is a water treatment unit for treating polluted surface waters by the process of slow sand filtration.
| Title | Package water treatment facilities for refugee communities |
| Publication Type | Journal Article |
| Year of Publication | 1988 |
| Authors | Graham, MJD, Hartung, H |
| Pagination | p. 605-610: fig. |
| Date Published | 1988-01-01 |
| Keywords | camps, emergency operations, slow sand filtration, somalia, water treatment plants |
| Abstract | Package water supply systems have been developed by Oxfam and Imperial College for emergency situations such as refugee camps. A component of these is a water treatment unit for treating polluted surface waters by the process of slow sand filtration. The treatment unit consists of 2 raw storage tanks which feed 2 slow sand filter tanks. A synthetic fabric layer is placed as a mat on the sand surface to act as the filter 'Schmutzdecke'. The nominal design population and flow for the package are 5000 and 114 m3/day, respectively. By May 1986, 12 units had been installed or were under construction in Southern Somalia. Raw water turbidity was reduced from 60 to 1.5 NTU and faecal coliforms from 2000 to 10 (per 100 ml). Filter run times varied between 16 and 79 days and the filtration rate between 0.04 and 0.05 m3/m2h. |
| Notes | Bibliography: p. 610 |
| Custom 1 | 255.1, 274 |
