Annacis Island WWTP Secondary Clarifier


Metro Vancouver

Project Completion

March 2021

Project Description

As Prime Contractor for this current and ongoing project, Tritech is responsible for the construction of two multi-stage odour control facilities that will provide odour control for Metro Vancouver’s South Surrey Interceptor.

As the Prime Contractor, Tritech’s scope of work included:
  • biotrickling filter/biofilter vessels, mist eliminators, carbon scrubbers, foul air fans, neutralization tank, nutrient tank, and ancillary mechanical, electrical, instrumentation and controls equipment
  • all mechanical components for both facilities including pumping equipment, process piping and valves, flow measurement, and plumbing systems
  • Electrical, instrumentation and control systems including electrical kiosk, MCC, BCH incoming equipment, facility area control panel, heat tracing, lighting, and instruments
  • Programming control of the odour control system using a new PLC control system for each facility
  • All auxiliary equipment, structures, and sitework including drains, sewers, watermains and systems required to complete the work for both facilities
  • Testing and commissioning of the new equipment and auxiliaries
  • Coordination with the City of Surrey and the City of Delta for tie-ins to City services and construction within public rights-of-way
  • Equipment and operating training to the Corporation’s personnel
  • Grading and Landscaping and the construction of gravel driveways and facility platforms

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