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Increasing the organic recycling of waste in Australia

The towns of Penrith and Liverpool invested in a mechanical and biological waste treatment facility in an effort to cut the cost of sending waste to landfill. The SAWT treatment plant, designed and operated by SUEZ, has increased the recycling of organic waste that is used improve the soil and cut the community’s costs.

The mission

Reduce landfill in Liverpool and Penrith (Australia)

In Australia, landfill is the most common form of waste management.
Paid for by municipal authorities and businesses, this public service in New South Wales is one of the most expensive in the country.

Located in the Sydney suburbs, the towns of Penrith and Liverpool decided to introduce a waste management system with the purpose of:

  • reducing costly landfill disposal,
  • increasing the recycling and recovery of organic waste.
130 
$/tonne
the landfill tax charged in New South Wales
406,936
the number of inhabitants of Penrith and Liverpool
Our solution

Treat organic matter separately

As the largest supplier of waste recovery facilities in Australia, SUEZ designed and installed a custom, advanced waste treatment system (SAWT), managing two flows:

  • food waste and and organic garden waste;
  • mixed solid waste.

Our SAWT waste treatment plant is a mechanical and biological treatment facility with two separate lines:

  • the first line processes mixed solid waste and a small volume of commercial and industrial materials, separating out organic matter using trommels, belt magnets and eddy currents;
  • the second treatment line is used to eliminate contaminants from food waste, separated at source and from organic garden waste prior to composting
The results

These two process treatment lines enable the SAWT facility to:

  • recover the majority of the organic fraction of waste and a part of the remaining recyclable waste;
  • minimize the quantity of recyclable organic waste sent to landfill sites;
  • recover organic matter as compost for agriculture and horticulture, but also in soil remediation, the rehabilitation of mining sites and to repair sports fields.
134,000
tonnes of waste treated per year, 55% of which avoiding being sent to landfill
15,506
tonnes of organic matter recovered (2015)
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