Abstract
A mixed microbial population of activated sludge was continuously cultivated wih various biological solids retention times (SRTs) and temperatures. The SRT and temperature caused shifts in the predominant population, entailing changes in the overall growth activities of activated sludge. Populations exhibiting higher respiratory activities, less resistances to inactivation by heat and larger ratios of protein to carbohydrate content in the cells were enriched in continuous runs at shorter SRTs and higher acclimation temperatures, and vice versa. The optimum temperature at which the population activity attains at maximum decreased with a reduction in SRT together a decrease in acclimation temperature. The dependence of K(s) value (the substrate saturation constant in the Michaelis-Menten equation) on acclimation temperature varied with SRT.
| Original language | English |
|---|---|
| Pages (from-to) | 171-176 |
| Number of pages | 6 |
| Journal | Water Science and Technology |
| Volume | 13 |
| Issue number | 9 |
| Publication status | Published - 1981 Jan 1 |
| Event | Pract Exper of Control and Autom in Wastewater Treat and Water Resour Manage, Pt 2, Proc of an Int Workshop of the IAWPR - Munich, Ger Duration: 1981 Jun 20 → 1981 Jun 26 |
ASJC Scopus subject areas
- Environmental Engineering
- Water Science and Technology