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OPERATIONAL EXPERIENCE FROM A SMALL FOOTPRINT LAMELLA AND BAFF PLANT IN ABERDEEN.
Author(s) -
Jolly Martin
Publication year - 2005
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.1747-6593.2005.tb01593.x
Subject(s) - sewage treatment , waste management , environmental engineering , sewage , environmental science , population , engineering , pilot plant , environmental protection , environmental health , medicine
The city of Aberdeen has a population of 265,000 people, which was previously served by a preliminary sewage treatment facility, Including screening and grit removal prior to discharge to the North Sea. The Nigg Waste Water Treatment Works (WwTW) was designed and built to treat the sewage from Aberdeen as part of a Private Finance Initiative (PFI) in order to achieve Urban Waste Water Treatment Directive (UWWTD) standards for BOD (25mg/l 95%ile) and COD (125mg/195%ile). A small footprint plant was required and involved lamella tube settlers for primary treatment followed by a Biological Aerated Flooded Filter (BAFF) plant for secondary treatment. The plant received loads above the design and chemical closing was applied to increase the capacity for treatment. Constant monitoring through the plant was put in place in order to optimise the performance. This paper gives details of the performance of the plant over the first year of operation.