Last week we replaced the sand in two of the filters in the Rossland Water Treatment Plant. This is a slow sand filter system and the sand hasn’t required refilling since the plant was comissioned over a decade ago.
The method used to place the sand is fast and efficient use of labor, with minimal handling of the sand through the process. With four more filters to go, we just need to wait for the turbidity to clear up from these two, (see the last photo above!).
For more information about Slow Sand Filters, check out Wikipedia.