The purpose of this paper is to describe the solution that is currently being
developed in response to a water treatment capacity shortage in a First Nation
(Indigenous) community in northwestern Ontario, Canada. Due to a variety of
reasons, the slow sand filtration plant at Lac La Croix First Nation, constructed
in 1994, has prematurely reached capacity. The expansion options available to the
First Nation are limited due to current fiscal constraints. In the early 1990s,
during the original design process, slow sand filtration technology had been
considered somewhat unproven in small scale applications in cold water
conditions. As a result, a conservative filter rate of 0.12 m/hr was adopted for
the Lac La Croix design to allow for sufficient contact time. This paper
discusses the optimization study currently being undertaken by the Project Team
to determine the effectiveness and benefit of increasing the hydraulic loading
rate (HLR) of the existing slow sand filtration process. By deferring the major
capital expenditure that would normally occur as a result of treatment facility
expansion, it is anticipated that this optimization project will result in
significant cost savings. Includes 6 references, table, figure.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 130 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 7 |
| Published : | 01/01/1999 |
