Biosolids production in Australia – 2017
The total biosolids production of Australia identified in the ANZBP commissioned 2017 survey was about 327,000 tonnes per year of dry solids. This compares to 300,000 tonnes in 2010, 330,000 tonnes in 2013 and 310,000 in 2015.
From the data the average solids content of biosolids is around 18% and this equates to around 1.8 million tonnes of biosolids in dewatered form (also called wet).
Biosolids end use in Australia – 2017
Biosolids end use nationally and for each state is presented in the chart below. Between this survey and the previous 2015 survey, one large producer of biosolids changed their end use from stockpile to use as a geotechnical material which was classified as land rehabilitation. This accounted for 10% of biosolids production in Australia in 2017 and increased the land rehabilitation component from 4% to 11%
Overall agricultural use has increased to 75%, continuing an upward trend from 55% in 2010, 59% in 2013 and 64% in 2015.
Stockpiling of biosolids has continued a downward trend, decreasing to 3% from 20% in 2010, 23% in 2013 and 9% in 2015.
Beneficial use counts for 94% of biosolids end use in Australia and 3 states achieve 100% beneficial use and one state only 1% non-beneficial use.
ANZBP members can review these statistics on a state by state level and explore the other insights gained in this and previous surveys here.