GO delivered this ECI project for the concept design, design reports and construction costing followed by an AS4300 Design and Construct contract. With tie-ins to the existing plant, GO built a new inlet chamber – raised to improve hydraulics, inlet fine screens with a coarse screen bypass channel and incorporated a grit removal system, screenings and grit handling equipment. A flow splitter box with flow measurement and control was installed, along with a Return Activated Sludge pumping station with mechanical ventilation for corrosion prevention and foul air management. Operational impact was minimised by constructing a unique temporary concrete chamber within the oxidation ditch, allowing new isolation valves to be installed without interrupting plant flows.
