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Dewatering/Biosolids + Get AlertsPhoenix, Arizona is the fifth largest city in the United States. To cater to its 1.6 million residents, Phoenix has two municipal wastewater treatment plants: the 23rd Avenue and 91st Avenue WWTP. 91st Avenue opened in 1958 and originally had a capacity of 5 million gallons per day, but it has since expanded to treat over 200 mgd.
In 1997, 91st Avenue installed GEA Westfalia Separator CA 755 decanter centrifuges for both thickening primary sludge and dewatering digested sludge. Ever since, GEA has maintained these centrifuges via a service contract and has kept them running well for 25-plus years. In 2021, the municipality wanted to update their dewatering technology. Research identified the GEA Westfalia Separator and four other manufacturers as viable alternatives. Each competed to win a contract with the city.
Learn about the process and its results in this short report.
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