Rubbish trucks empty the waste into a deep pit

About 50 trucks a day, five days a week, deliver waste to the facility at Neerabup. The trucks come from the MRC's member councils.

Inside the fully enclosed Receivals Hall trucks tip the waste into a 50m x 8m x 8m pit.


This large mechanical claw feeds the waste into the composters to start the process

A grapple (a large mechanical claw) picks up the waste and drops it into a chute which feeds the waste into a composter for the first part of the composting process. The grapple also removes bulky and hazardous items from the waste.



Break down the organic material, the central part of the process

The waste spends three days rotating in the composter where it is broken down and rapidly decomposes.


The composter is a rotating drum that mixes the waste. Air and sometimes water are inserted into the drum to ensure that the ideal environment is created for the natural micro-organisms that breakdown the waste. No chemicals or heat are added to the drum. The waste stays in the rotating drum for at least 3 days.  The material that exits the drum is a crude compost which is then sorted and refined. The facility has two composting drums, each is 65 metres long and 4.5 metres in diameter.

After three days in the composter, the material is then screened, with the particles less than 35mm being sent to the maturation hall and the over sized particles being sent to landfill as a waste product.


Material from the composters is fed into a rotating barrel and screened 



Refined matter is broken down further in the Maturation hall containing 32 rows and corridors

The minus 35mm particles spend 28 days in the maturation hall where the material continues its decomposition process to produce a fine soil conditioning product.

The matured material is fed through a number of processes to improve the quality of the compost

The crude compost is sorted and screened so that any large or inorganic particles are removed. Metals can all be separated by mechanical methods and recycled.

The crude compost then moves to the maturation hall for further refinement. The raw composted material is piled into rows and over the next 28 days the composting process continues. The material is turned 10 times over the 28 days, and the temperature and moisture content are controlled to ensure optimum conditions for the production of the compost. The compost is then further screened and the refined particles become the high quality compost that can be sold.


 A living odour eater designed to remove any offensive odours produced in the composting process

The entire process is undertaken in an enclosed area. Air leaving the facility passes through a Biofilter to prevent any odours and water is reprocessed. The 2000m2 covered Biofilter is filled with oversized fractions from the composting process, mainly wood shavings, which are kept moist to provide an ideal environment for bacteria to embark on an uninterrupted odour-eating feeding frenzy to return treated air to the environment.

The final process is the further screening of non-organic material out of the matured product before it is sent off to market.



The final product is stored here prior to being loaded onto trucks for delivery to markets 


End of the line with quality compost 




Last Updated: 21 Sep 2017
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