Woodlawn Bioreactor, NSW

Woodlawn bioreactor

Woodlawn Bioreactor: Turning 20% of Sydney’s waste into energy

The Woodlawn Bioreactor currently manages around 20% of Sydney’s putrescible waste and capturing its emissions to generate clean energy for up to 30,000 homes.

THE CHALLENGE

Reducing landfill waste will continue to be one of the major challenges for local, regional and state authorities. Diverting domestic waste from landfill through sustainable waste management education, strategies and is critical in meeting the challenge to reduce demand on landfill facilities nationally. 

In an effort to tackle the rising tide of putrescible waste in the Sydney region at the turn of the millennium, the then Minister of Planning approved a proposal from Veolia to develop a rail transfer terminal, to move waste from Sydney's South, and a landfill Bioreactor at the Woodlawn facility. Veolia was commissioned for the construction of a rail transfer terminal to Woodlawn from Clyde (21km south west of Sydney’s CBD). In addition to the highly efficient rail transfer terminal, Woodlawn's landfill gas bioreactor came on-line in 2004.
 

THE SOLUTION

The successful construction of a rail transfer terminal for Sydney's waste and a new landfill gas bioreactor beginning its service in 2004. The Woodlawn facility is capable of accepting much more than the intended 20% of Sydney’s putrescible waste and is still recognised, 13 years later, as an example of best practice in municipal waste management and utilisation of leading landfill technology. Since opening in 2004, over 4.1 Mt of waste has been processed at the facility, most of which has been used to generate green electricity. The latest figures published by Veolia in September 2017 reveal the impressive power generation capabilities of the bioreactor which is capable of meeting the energy requirements of up to Australian 30,000 homes.

Globally, bioreactor technology is still considered at the forefront of feasible clean energy production for existing waste management facilities. It is understood that for every megawatt of power produced by the Woodlawn bioreactor approximately 0.75 tonnes of physical waste is recycled and in the form of methane gas emissions leaving the physical waste material. Therefore, for every tonne of waste deposited at the facility 1.33 megawatts of clean electricity can be produced and used to power the facility, businesses, homes and municipal infrastructure.

The Woodlawn facility has prioritised sustainable and innovative waste management practices including:
  • 7 landfill gas Bioreactors that recover up to 7 megawatts of clean energy from what would otherwise be gas-emitting waste material.
  • Agriculture incorporating a working farm that applies nutrient and grazing rotation to help manage and understand impacts on the site.
  • Aquaculture and horticulture capturing waste heat from energy production and using it for fish farming and hydroponic horticulture
  • Mechanical and Biological Treatment (MBT) extracting organic content from the waste to produce compost for environmental rehabilitation.
  • Windfarm (operated by Infigen Energy) that harnesses 48.3 megawatts of clean energy per year.
  • Solarfarm utilising increased sun exposure from cleared land to produces 2.5 megawatts of clean energy per year.

THE RESULT

Environmental benefits: The facility reduces the State’s environmental footprint by processing 20% of Sydney’s putrescible waste and diverting 45% of the waste received from landfill. In addition, Veolia  increased recycling volumes for the state even further with the introduction of a Mechanical Biological Treatment (MBT) facility in 2016.

Social benefits: Veolia’s Woodlawn Bioreactor development and ongoing operations has involved an ongoing engagement with the local community. This includes a community liaison committee, regular updates in the Tarago Times, email and SMS alerts and regular representation at local community meetings. Veolia created the Veolia Mulwaree Trust which provides funding for charitable purposes and worthwhile community projects to benefit communities within or surrounding the former Mulwaree Shire Council area.

Processing 20% of Sydney’s putrescible waste

Exports enough power to supply over 30,000 households

Capable of managing consistent rates of waste up to and beyond 2047