1.
Water Sci Technol
; 50(7): 179-86, 2004.
Article
in English
| MEDLINE
| ID: mdl-15553474
ABSTRACT
Full-scale investigations at a WWTP with a two-stage secondary settling tank process revealed relationships between significant operating parameters and performance in terms of effluent suspended solids concentration. Besides common parameters (e.g. surface overflow rate and sludge volume loading rate) feed SS concentration and flocculation time must be considered. Concentration of the return activated sludge may help to estimate the performance of existing secondary settling tanks.