North Head Wastewater Treatment Plant upgrade

We replaced the odour control system (scrubber) on the Northern Suburbs Ocean Outfall Sewer (NSOOS) system early in 2017.

This will improve odour management at North Head Wastewater Treatment Plant.  
 
Some related projects remain and will continue until later in 2017.

Aerial view of treatment plant surrounded by trees and ocean cliffs

Our work is essential to ensure the treatment plant runs efficiently and reliably.

About the project

Illustration within photo of future work at the treatment plant

Select the image to see a larger version of the new  infrastructure.

We’ve replaced the existing Northern Suburbs Ocean Outfall Sewer (NSOOS) odour control system at North Head Wastewater Treatment Plant.
 
The system treats air from the NSOOS as well as the underground screenings area of the plant.

We have:

  • replaced the existing scrubber with nine bio-trickling filters(BTF) and associated infrastructure including duct work, a ventilation stack and water tank
  • modified the underground ventilation system at the plant
  • tested the BTF to confirm reliability during operation at the North Head Wastewater Treatment Plant.

In 2017, we'll decommission the existing NSOOS chemical scrubber once the BTF is operational. We're also building a standby polishing scrubber as a back-up for the BTF. Completion is expected later in 2017.

There will be minimal impacts on the environment during construction and commissioning of the new infrastructure.

Work on this project at North Head Wastewater Treatment Plant is almost done.
 

Proposed timeline

October 2013 to November 2013 Review of environmental factors on display
March 2014 to September 2014 Detailed design work
June 2014 to October 2015 Construction
October 2015 to late 2017 Commissioning of the new infrastructure

Large grey pipes on concrete structure

The new Bio Trickling Filters have now been installed.

  • Community news - North Head Wastewater Treatment Plant - August 2017
  • Community news - North Head Wastewater Treatment Plant - May 2017
  • Community news - North Head Wastewater Treatment Plant - December 2016 
  • Community news - North Head Wastewater Treatment Plant - April 2016
  • Decision report - North Head Wastewater Treatment Plant NSOOS Scrubber Replacement Project - March 2014 
  • Review of Environmental Factors - North Head Wastewater Treatment Plant NSOOS Scrubber Replacement Project - October 2013
To learn more, contact our Community Relations Team by:

Sydney Water
Community Relations – Wastewater Treatment Plants
PO Box 399
PARRAMATTA  NSW  2124