Wastewater Treatment Plant Upgrade – Kent & Mountain Institutions

Client: Public Works and Government Services Canada

The scope of work to upgrade the WWTP facility consists of four distinct components:

1. Design
   • Detailed design to allow construction and post construction services including supply, installation, testing and commissioning for the project, complete with the site works, geotechnical works, environmental works, structural works, process and building mechanical works, architectural works, ventilation works, instrumentation, controls and electrical distribution systems.

2. Construction
   • Construct a new WWTP which will include the following components:
   • Process components including:
     • Step screens with residuals washing;
     • Grit removal and classifier;
     • Equalization;
     • SBR’s;
     • UV disinfection; and
     • Solids handling facilities
   • Site works including:
     • Increasing the site grade to accommodate the 200-year flood elevation;
     • Subgrade improvements;
     • Perimeter fencing, entry gate, site access and parking; and
     • Decommissioning of the existing WWTP
   • A headworks building that will accept flows from three influent lines with an additional influent line for filtrate and supernatant from the solids handling processes. The headworks building will include the following components:
     • A headworks area for step screens and grit removal;
     • A separate mechanical room for blower equipment and future chemical dosing;
     • Odour control; and
     • Accessibility to manage headworks residuals handling
     • Construct an equalization tank and covering structure. The structure will be open to the atmosphere.
     • The existing sludge storage tanks are being replaced with new Filtrate & Supernatant Equalization Tank with mixing pumps to serve as filtrate and supernatant storage.
   • Construct an administration and operations building including:
     • office, laboratory for sample analysis, washroom with shower, kitchen, and washer/dryer;
     • the mechanical/electrical components for the new WWTP and will include the main electrical components, an operator’s office for the WWTP control centre, and effluent pumping area and ultraviolet (UV) equipment and wet well area; and
     • telephone and high speed internet communication, which will be provided by and in consultation with Shared Services Canada.
     • Construct a Sequencing batch reactors (SBR) and covering structure.
     • Construct a solids handling facility that will produce Class B biosolids, at a minimum, as defined by the BC Organic Matter Recycling Regulation (OMRR) classification system.
     • Other features of the new WWTP to include:
     • Electrical connection to be moved from existing WWTP to a new Motor Control Centre (MCC) in the electrical portion of the new Administration and Operations building.
     • A new single point of connection for internet to allow connection to all system PLC’s and master WWTP SCADA system.

3. Commissioning of new WWTP
   • Act as Commissioning Provider during the commissioning of the facility and ensuring that there is no disruption to the treatment process upon turnover from the existing plant to the new WWTP.
4. Decommissioning of existing WWTP
   • Decommissioning and demolition of the existing wastewater treatment system following successful commissioning and start-up of the new Facility.
   • Demolition of existing infrastructure including oxidation ditch, clarifier, wet well, screens and tank, and equalization tank. Removal of electrical and pump components/equipment from existing pumps station building.