Port Weller Wastewater Treatment Plant - Grit Upgrade Program (Retrofitting the existing air lift pumping system to grit pump and cyclonic grit concentrator) - located in the City of St. Catharines

completed

Closed

The Region Wide Grit Upgrade Program supports the rehabilitation/replacement of grit systems at Wastewater Treatment Plants (WWTP). In 2017 the program will carry out upgrades to the Port Weller WWTP grit system. The Port Weller WWTP located in St. Catharines provides wastewater (sanitary) treatment for approximately 75,000 people plus industrial, commercial and institutional needs. This plant is a Class 4 facility and has a rated capacity of 56,180 m³/day with a peak primary treatment flow rate of 136,200 m³/day and a peak secondary treatment flow rate of 112,360 m³/day. The existing air lift system at the plant has reached the end of its service life and will be replaced with a new pumping system. This will include associated piping, wiring and minor SCADA modifications. Retrofitting the existing air lift pumping system to grit pump and cyclonic grit concentrator will reduce hydraulic loading to the classifier and increase grit removal efficiency. The improvements will increase the grit removal from the plant treatment train and reduce grit accumulation in the sludge digesters. Additionally it is expected that there will be reduced maintenance related costs. This is from the reduction in replacement of pump impellers and prolonging the cleanout interval of digesters and aeration tanks. In summary these improvements will increase grit capture by 100% and as a result decrease maintenance costs as well as supporting the treatment plants MOECC obligations (rated capacities). The cost estimate is based on 60% detailed design. Final costs will be subject to tender award.

Canada

Infrastructure Canada

Project

Water Supply and Storage, Manufacturing (Industrial), Rail, Waste Processing and Treatment, Commercial, Government