Results from a series of bench-scale experiments and sampling of full-scale slow sand
filters (SSFs) confirmed a relationship between increased ripening time and increased biomass,
protistan abundance, and E.coli removals. Additionally, several protist feeding experiments were
conducted and a bench-scale "seeding" to assess improvement of SSF performance was
performed. Protistan predation studies showed that the percentage of ingested bacteria per protist
experiences a spike 0-2 hours after bacteria are introduced to protists from a SSF. The time of
year, water temperature, and type of bacteria used in the study, whether indigenous or lab-cultured,
have minor effects on predation. The seeding study showed increased protistan
populations in some seeded filters and minor improvements to E.coli removal performance in
filters that were initially unripened. Includes 14 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 750 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 14 |
| Published : | 11/01/2008 |
