Relative Predominance of Microorganisms in Activated Sludge

This graph shows that sludge retention time and the Food to Microorganism ratio are two factors that need to be controlled for a healthy and efficient waste water activated sludge.

The other factors affecting the biota are:

- pH
- Temperature
- C/N/P ratio
- Presence of toxic substances
- Dissolved Oxygen


Rami E. Kremesti M.Sc.