Premium
Construction and Operation of a Submerged Aerated Filter Sewage‐Treatment Works
Author(s) -
ROBINSON A. B.,
BRIGNAL W. J.,
SMITH A. J.
Publication year - 1994
Publication title -
water and environment journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 37
eISSN - 1747-6593
pISSN - 1747-6585
DOI - 10.1111/j.1747-6593.1994.tb00914.x
Subject(s) - effluent , aeration , sewage , environmental engineering , environmental science , sewage treatment , aerated lagoon , filter (signal processing) , population , pulp and paper industry , waste management , engineering , activated sludge , electrical engineering , demography , sociology
The capacity of the sewage‐treatment works at Silchester in Hampshire has been enhanced and the effluent quality improved to a high standard by the installation of a new submerged biological aerated filter plant. Ten prefabricated steel submerged aerated filters reduce BOD and fully nitrify settled domestic sewage from a population equivalent of 20 000. Comprehensive operating data are presented to demonstrate the ability of single‐stage submerged downflow aerated biological filters to produce a nitrified effluent. The final effluent quality remains consistently within consent limits at 4.8 mg/l BOD, 7.0 mg/l SS and 0.5 mg/l NH 3 ‐N, all 95 percentiles. (Consent 7 mg/l BOD, 25 mg/l SS, and 5 mg/l NH 3 ‐N, 95 percentiles.) Data are presented on total coliform and E. Coli concentrations through the filter plant, showing better than 3 log reductions in the effluent.