Biosolids production in Australia – 2015
The total biosolids production of Australia identified in the ANZBP commissioned 2015 survey was about 310,000 tonnes per year of dry solids. This compares to 300,000 tonnes in 2010 and 330,000 tonnes in 2013. This does not reflect any significant change in biosolids production, and is due to both changes to analysis and records keeping and improvement in and implementation of stabilisation processes. The average solids content of biosolids is around 21% and this equates to around 1.5 million tonnes of biosolids in dewatered form (also called wet). There were no significant changes in proportional state contribution from 2010 or 2013.
Biosolids end use in Australia – 2015
Biosolids end use nationally is presented in the charts. Overall, there has been a decrease in stockpiling of biosolids (down from 23% in 2010 and 20% in 2013 to 9%) and a marginal drop in other, unspecified and landfill end uses of biosolids. There has been an increase in biosolids used for land rehabilitation (unmeasured in 2010 and up from 4% in 2013 to 16%) as well as an increase in biosolids used for agriculture (up from 55% in 2010 and 59% in 2013 to 64%). This indicates a significant shift towards greater beneficial use of biosolids.
ANZBP members can review these statistics on a state by state level and explore the other insights gained in this and previous surveys here.