By Kevin Litwiller, Lystek International
The RoadRunner – Fall 2015
The City of North Battleford has a population of almost 14,000 and is located roughly 130 kilometres northwest of Saskatoon, SK. The city’s wastewater treatment plant (WWTP) was commissioned in 2003-2004 and treats 5,700 to 6,400 cubic metres of wastewater daily. The plant consists of a headworks (a fine screen and grit removal unit), two trains of bioreactors configured for biological nutrient removal, two secondary clarifiers and a biosolids management facility. In accordance with the Permit to Operate issued by the Saskatchewan Ministry of Environment (MOE), the treated effluent is discharged into the North Saskatchewan River and biosolids from the biosolids management facility were formerly disposed of at the city’s waste management facility (WMF). The biosolids management building houses a rotary drum screen, to thicken sludge, ahead of a centrifuge that dewaters the thickened sludge. A polymer is added to the sludge to aid in dewatering. This results in approximately 3,500 metric tonnes of biosolids that were, until recently, being sent to the WMF and landfilled. There was no beneficial use of the city’s biosolids.
The Roadrunner is the official publication of the Public Works Association of British Columbia, the Alberta Public Works Association, the Saskatchewan Public Works Association, the Manitoba Public Works Association and the Alberta Municipal Supervisors Association. The magazine promotes excellence and public awareness of public works through education and advocacy. The Roadrunner is published three times a year and about 2,5000-3,000 copies are distributed by direct mail to the members and municipalities of each group.