On December 15, the Capital Regional District announced that it is providing tertiary treatment for wastewater from the core area municipalities of Victoria, Esquimalt, Saanich, Oak Bay, View Royal, Langford and Colwood, and the Esquimalt and Songhees Nations.
PBX Engineering and Parsons provided electrical and construction engineering services for the conveyance system that carries residual solids from the treatment plant to the Residuals Treatment Facility at Hartland Landfill.
The Residual Solids Conveyance System comprises a forcemain and three intermediate pump stations transporting biosolids from the McLoughlin Point Wastewater Treatment Plant (WWTP) to the Residuals Treatment Facility (RTF) adjacent to the Hartland Landfill. The second component is a gravity line returning centrate to the sanitary sewer system at the Marigold Pump Station. The Residual Solids Forcemain (RSF) is a 250 mm diameter pipeline 19.3 km in length. The Centrate Return Line (CRL) is a 300 mm diameter pipeline 12.4 km long and serves a dual function: returning centrate and draining the leachate lagoons at the Landfill.
PBX Engineering’s scope of work included provisions for detailed design of wet well instrumentation, valve/flowmeter chamber instrumentation, three-section electrical kiosk, standby generator, automatic transfer switch, two new 125HP pumps, underground conduit cabling infrastructure, utility service connections, connections to instrumentation, and PLC control electronics as per the CRD standards. A 175kW/218.8kVA standby generator was designed for single pump operation. A custom generator enclosure was designed to meet District of Saanich sound attenuation requirements.
For more information about the Wastewater Treatment Project please visit: https://www.crd.bc.ca/project/wastewater-treatment-project