Full-scale biofiltration experiments demonstrated that good removal of biodegradable organic
matter (BOM) following ozonation could be achieved without compromising particle removal.
BOM removal by granular activated carbon (GAC) filter adsorbers and dual-media filters was
measured using total organic carbon (TOC) and certain BOM components (carboxylic acids).
The authors investigated how filter backwashing with water, water and air scour, and water
and air scour at collapse-pulsing conditions affect filter biomass, BOM removal, and particle
removal. At 21-24ºC, the media type did not affect BOM removal. At 1-3ºC, GAC provided
substantially better removal of oxalate and TOC than did anthracite. For both media types, cold
water oxalate removals were significantly impaired, compared with those achieved in warm
waters. BOM removal was more resilient than particle removal to changes in backwash
protocol. Phospholipid biomass concentration was not directly related to BOM removal by filters. Includes 35 references, tables, figures.
| Edition : | Vol. 98 - No. 12 |
| File Size : | 1
file
, 910 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 13 |
| Published : | 12/01/2006 |
