Abstract
The ability of bench-scale activated sludge biological phosphorus removal systems to produce effluents with consistently low phosphorus concentrations was influenced by influent TOC/COD and phosphorus loading pattern. Varying influent phosphorus and TOC/COD concentrations in-sync at 50, 100 and 150 percent of the control value on a random (daily) basis produced an effluent with orthophosphorus concentrations consistently less than 0. 3 mg/l. In contrast, when influent phosphorus and TOC/COD concentrations were independently varied within the same limits, effluent phosphorus concentrations were found to change in conjunction with the same-day loading and the past phosphorus-TOC/COD loading pattern. While long-term orthophosphorus concentrations averaged about 1. 3 mg/l, daily values exceeded 4. 0 mg/l. A parallel reactor system operated for simultaneous nitrogen and phosphorus removal proved even more sensitive to variations in daily influent composition. (Author abstract. )
| Original language | English (US) |
|---|---|
| Title of host publication | Unknown Host Publication Title |
| Publisher | ASCE |
| Pages | 779-786 |
| Number of pages | 8 |
| ISBN (Print) | 0872624684 |
| State | Published - 1985 |
