 |
| The Lakeshore West Pollution Control Plant with average daily treatment capacity of 5,400 m3/day. |
By Elvino Azevedo and John Merritt, Ontario Clean Water Agency,
and
Jim Allen, Eaglebrook, Inc.
|
| The Lakeshore West Pollution Control Plant with average daily treatment capacity of 5,400 m3/day. |
The Lakeshore West Pollution Control Plant near Kingsville, Ontario, was able to significantly reduce odour complaints as a result of the handling and dewatering of the treatment plant's solids.
This was achieved by converting from alum to ferric sulphate for phosphorus control. Ferric sulphate minimized the odour released from the plant by precipitating out the dissolved sulphides and reducing the amount of hydrogen sulphide gas produced. This was accomplished while maintaining effluent quality and generating cost savings of 13.1% over the alum program.
The use of an iron-based coagulant had no impact on the UV disinfection system; moreover, the units were cleaned fewer times while using ferric sulphate.
The plant was constructed to solve the pollution problems originating from malfunctioning septic systems in the lakeshore area of the Township of Gosfield South, and to alleviate the existing capacity limitations of the Kingsville lagoon system.
Operational in 1998, the plant was designed for an average daily treatment capacity of 5,400 m3/day. The conventional activated sludge process consists of coarse screening, grit removal, primary sedimentation, fine bubble aeration, secondary sedimentation and ultraviolet (UV) disinfection. Disinfection is required from May 1 until October 31, and there are no tertiary filters. The Ontario Clean Water Agency (OCWA) has the operating contract for the facility that was built at a cost of $22.1 million.
This article was abridged from Environmental Science & Engineering magazine, which also contains many more articles not posted on our Web Site. See our home page on how to order your subscription. We regret we can only accept orders from Canada and the United States.