Abstract
For single-sludge denitrification systems, modelling of anoxic reactors currently uses the kinetics of aerobic heterotrophic growth together with a correction factor for anoxic conditions. This coefficient is computed on the basis of respirometric measurements with the assumption that the heterotrophic yield remains the same under aerobic and anoxic coditions. The paper provides the conceptual proof that the yield coefficient is significantly lower for the anoxic growth on the basis of the energetics of the related metabolic processes. This is used for the interpretation of the very high values for the correction factor experimentally determined for a number of industrial wastewaters. A default value for the anoxic heterotrophic yield coefficient is calculated for domestic sewage and compatible wastewaters and proposed for similar evaluations.
| Original language | English |
|---|---|
| Pages (from-to) | 67-74 |
| Number of pages | 8 |
| Journal | Water Science and Technology |
| Volume | 34 |
| Issue number | 5-6 -6 pt 3 |
| DOIs | |
| Publication status | Published - 1996 |
| Event | Proceedings of the 1996 18th Biennial Conference of the International Association on Water Quality. Part 3 - Singapore, Singapore Duration: 23 Jun 1996 → 28 Jun 1996 |
Keywords
- Confectionary wastes
- Correction factor
- Dairy wastes
- Denitrification
- Domestic sewage
- Heterotrophic yield
- Meat processing wastes
- Single-sludge systems
