PROJECT OVERVIEW
In August 2007, Sydney Water formed the Process and Reliability/Renewals (PARR) Alliance to complete a $92 million capital works program to renew and refurbish the North Head Sewage Treatment Plant. The plant serves a population of over one million people and treats approximately 300 million litres of flow a day, equivalent to 120 Olympic swimming pools of wastewater. The treated wastewater is then discharged via a 3.7km deep-water ocean outfall located off Sydney’s northern beaches. The PARR Alliance consisted of Sydney Water, UGL, John Holland, MWH, WorleyParsons and Manidis Roberts.
THE CHALLENGE
The discharges from Sydney Water’s treatment plants must comply with licences issued by the NSW Office of Environment and Heritage. These licences specify the quantity and quality of treated wastewater that can be released to rivers and the ocean.
To minimise the impact of treated wastewater discharged to waterways, Sydney Water recognised the need to upgrade its treatment processes.
THE SOLUTION
The upgrade works on the North Head Sewage Treatment Plant draw on UGL’s extensive experience in delivering unique wastewater engineering infrastructure solutions in Australia and overseas.
The upgrade works will substantially extend the life of the existing treatment plant, increase treatment flow performance while reducing operational costs to support higher standards of wastewater purification.
UGL’s role included the oversight of project management, design development, construction works, control system installation, commissioning services and operator training.
The scope of works comprised:
In August 2007, Sydney Water formed the Process and Reliability/Renewals (PARR) Alliance to complete a $92 million capital works program to renew and refurbish the North Head Sewage Treatment Plant. The plant serves a population of over one million people and treats approximately 300 million litres of flow a day, equivalent to 120 Olympic swimming pools of wastewater. The treated wastewater is then discharged via a 3.7km deep-water ocean outfall located off Sydney’s northern beaches. The PARR Alliance consisted of Sydney Water, UGL, John Holland, MWH, WorleyParsons and Manidis Roberts.
THE CHALLENGE
The discharges from Sydney Water’s treatment plants must comply with licences issued by the NSW Office of Environment and Heritage. These licences specify the quantity and quality of treated wastewater that can be released to rivers and the ocean.
To minimise the impact of treated wastewater discharged to waterways, Sydney Water recognised the need to upgrade its treatment processes.
THE SOLUTION
The upgrade works on the North Head Sewage Treatment Plant draw on UGL’s extensive experience in delivering unique wastewater engineering infrastructure solutions in Australia and overseas.
The upgrade works will substantially extend the life of the existing treatment plant, increase treatment flow performance while reducing operational costs to support higher standards of wastewater purification.
UGL’s role included the oversight of project management, design development, construction works, control system installation, commissioning services and operator training.
The scope of works comprised:
- New underground screenings handling system
- Grit removal system improvements including additional grit tanks
- Primary sedimentation system improvements including additional tanks
- Testing and commissioning of SCADA & Automation (Siemens technology) systems programs
- Modifications to the Northside Storage Tunnel (NST) dewatering pump systems