The water treatment plant provides wastewater treatment for approximately 42,000 people. The plant capacity is 16.8 m3/day with a current average day flow is 11 m3/day. Wastewater enters the facility, goes through 3-stages of treatment before being pumped back into Okanagan Lake.
The Westbank Process
Did you know? Our wastewater treatment plant process is an internationally recognized method of treating wastewater.
Wastewater enters the plant through a Parshall flume (to provide control and monitoring of flow) and is then screened and degritted prior to receiving primary clarification. The plant operates a secondary treatment process called the “Westbank Process,” an internationally recognized process of treating wastewater. The Westbank Process is based on the 3-Stage Bardenpho process with provisions for a Return Activated Sludge denitrification upstream of the anaerobic zone. Each bioreactor feeds a dedicated secondary clarifier. The effluent undergoes tertiary treatment via filtration and Ultra Violet disinfection. The tertiary treated effluent from the plant is discharged into Okanagan Lake through an outfall.
The primary solids stream at the treatment plant undergoes fermentation, while the waste secondary solids stream is treated with a DAF thickener. Both streams are pumped to a centrifuge for dewatering with the dewatered sludge trucked off site for disposal.
