Abstract
The competition between floc-forming and non-settling filamentous populations has been analysed for an activated sludge process incorporating a plug-flow reactor and a settler. The substrate gradient along the reactor facilitates proliferation of the desired population and yields conversions which are higher than any possible in a mixed reactor, but with the disadvantage that larger reactor volumes are required. Design criteria determining the largest recycle ratio which can still assure growth of the floc-former, have been derived for single-substrate competition as well as for competition for oxygen and competition coupled with decay. The structure of the reactor-settler interaction has been analysed and compared with that of a mixed reactor-settler system.
| Original language | English |
|---|---|
| Pages (from-to) | 173 |
| Number of pages | 1 |
| Journal | Chemical Engineering Journal |
| Volume | 45 |
| Issue number | 3 |
| DOIs | |
| State | Published - 1991 |
| Externally published | Yes |