The Aerofloat Solution
Aerofloat provided an effective leachate treatment solution at Dunmore Recycling and Waste Disposal Depot for Shellharbour City Council.
Aerofloat installed three large concrete tanks, comprising an anoxic reactor, nitrifying reactor and a sequence batch reactor (SBR). To complete the build, activated sludge recycle pumps were installed between the reactors to ensure consistent concentrations in the reactors. Chemicals optimised the process performance, including Sucrose as a carbon source and Caustic Soda for pH correction. Excess biosolids were pumped to a thickening tank for disposal.
Understanding the nitrification and denitrification process was extremely important in treating the leachate. The high ammonia levels were effectively treated to ensure a high quality effluent prior to discharge to sewer. Aerofloat’s leachate treatment system was designed to achieve an effluent quality suitable for discharge to Sydney Water’s sewer, with a design capacity of around 65m3/day and an average ammonia concentration of 1250mg/L.
“From the beginning, Aerofloat critically analysed the process design by leveraging its in-house knowledge and experience in treating industrial wastewaters. Once the civil works and large tanks were constructed, Aerofloat made the build seem simple, despite being a very complex project.”
James Brumpton, Shellharbour City Council Project Manager.
The plant was contained within a concrete bund and included a purpose-built mezzanine floor to ensure all the critical mechanical and electrical systems were safely positioned. The system was also installed with an automated PLC system with a HMI interface and offered remote-monitoring capabilities.