North Wall Sewage Treatment Plant and Main Lift Station Upgrade

The HVAC and odour designs implemented included a ventilation strategy to properly separate classified areas from unclassified areas, provision of on-demand HVAC controls to start systems prior to operator entry with the option to start these units remotely, provision of heating to 18°C when operators are present, ventilation of air space above headworks and clarification channels to manage odours, use of high plume odour systems to manage the odours from a large airspace in the screenings and grit storage room and the biosolids room, new heating and ventilation systems to declassify the existing station’s dry well and addition of an odour control unit for the exhaust from the wet well.

The team also provided process advice related to the assessment of wastewater treatment and odour control systems.