Massive recent growth in The City of Calgary required the design and construction of the Pine Creek Wastewater Treatment Plant. The project was divided into sub-sections for tender and construction, of which Maple Reinders was contracted for the construction of Contract 3 – Effluent Filtration and UV Disinfection.
The full project involved the construction of a new 100 ML/day Biological Nutrient Removal (BNR) facility with the ability to build in capacity up to 750 ML/day, to service some 1.5 million citizens. Contract 3 focused on the construction of structures and process systems to accommodate both the filtration of plant effluent using twelve cloth media filter assemblies (the largest installation of its type in North America), as well as disinfection of filtered effluent using ultra-violet technology as final treatment of the effluent prior to discharge into the Bow River. Sub-components of contract 3 included an effluent water recycling system, sodium hypochlorite chemical injection system, plant wide electrical security and fire protection systems, effluent flow measurement, all related and required HVAC systems, and provision to double the capacity of the UV system and triple that of the effluent filtration.
The whole of the Pine Creek WWTP was constructed to comply with LEED (Leadership in Energy and Environmental Design) as a pilot project for the application of LEED criteria to facilities of this type. The plant has been successfully commissioned and has exceeded its goals for LEED certification and effluent quality.