@article {Natvik:2003-01-01T00:00:00:1938-6478:403, author =
"Natvik, Olav and Dawson, Bob and Emrick, Joni and Murphy,
Scott", title = "BNR “Then” vs “Now” A Case Study - Kalispell
Advanced Wastewater Treatment Plant", journal = "Proceedings of
the Water Environment Federation", volume = "2003", number =
"10", year = "2003-01-01T00:00:00", abstract = "An advanced
wastewater treatment plant was commissioned in 1992 for the City
of Kalispell, which is located in northwest Montana and
discharging to a sensitive Rocky Mountain watershed. The plant
featured a biological nutrient removal (BNR) process and primary
sludge fermentation to ensure complete biological phosphorus
(Bio-P) removal. This plant was state-of-the-art BNR at the time
and has performed exceptionally well since its commissioning
having been awarded many federal, state, and local awards for
its excellent effluent quality. Recent rapid growth within the
community however has caused plant loading to near original
design loading limits and consequent