Helea sludge treament was developed through Anglian Water’s innovation programme, and has been used on four active UK sites. It is now being brought to market by Haskoning. It will be implemented alongside Haskoning’s Ephyra technology at Barueri and São Miguel Wastewater Treatment Plants (WWTPs). Barueri is the largest WWTP in Latin America, and together the sites will serve around 10 million people across São Paulo.
A simplified Helea process, called Helea Lite is now being applied internationally for the first time at mega-city scale. Treatment capacity at Barueri will increase from 16,000 to 22,500 litres per second, with capacity at the São Miguel plant rising from 1,500 to 5,500 litres per second. Biogas generated through the new processes will be used for combined heat and power generation, thermal sludge drying, and other sustainable applications, effectively transforming both plants into state-of-the-art energy recovery facilities.
Emily Timmins, director of water recycling at Anglian Water said: “Helea was developed over 15 years ago to create a cost effective and energy efficient way to operate our sludge treatment centres in the Anglian Water region. We’re delighted that our partnership with Haskoning has led to its application at this scale in one of the world’s largest cities.”
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