Abstract
Experimental results suggest that sequencing batch reactors (SBR) are not efficient for enhanced biological phosphorus removal from domestic sewage with low/medium organic carbon content when denitrification preferentially competes for available carbon. Total COD is not a meaningful parameter to reflect available substrate for N and P removal; COD fractionation and identification of the readily biodegradable COD fraction are required for an accurate assessment of system performance. The degree of soluble COD removal in the non-aerated phase is observed to be much higher than what may be calculated from stoichiometric relationships for N removal and P release, indicating the existence of competing mechanisms such as organic carbon storage by non-polyP bacteria under anaerobic conditions.
| Original language | English |
|---|---|
| Pages (from-to) | 337-344 |
| Number of pages | 8 |
| Journal | Water S.A. |
| Volume | 25 |
| Issue number | 3 |
| Publication status | Published - Jul 1999 |
