SYDNEY, Australia - Utility Sydney Water has awarded Norwegian company Cambi a contract to install its thermal hydrolysis process (THP) to treat sludge from two water recycling plants.
Following a competitive bidding process, the THP system will be used to treat sewage sludge from the St Marys and the Quaker Hills Water Recycling Plants.
St Marys is the largest inland Water Recycling Plant (WRP) operated by Sydney Water, treating a current average dry weather flow (ADWF) of 38,100 m3/day.
Meanwhile, Quakers Hill WRP is located 10 km to the east of the St Marys plant and is a large inland treatment plant, currently treating approximately 33,000 m3/day of wastewater.
Both are part of the Lower South Creek Treatment Program and will be operational in the second half of 2019.
Sydney Water will treat up to 46 metric ton dry solids a day using the THP technology, which hydrolyses sewage sludge so that it becomes more easily digestible and produces pathogen-free Grade A biosolids
Mark Simister, head of delivery management at Sydney Water, said: “This plant will significantly reduce the truck movements to dispose of large quantities of solids and provide a more effective and efficient way to manage sludge. THP will play an important role in transforming how Australian wastewater plants manage sludge in a more sustainable and cost-effective manner.”
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