Anglian water treatment for Brazil: process scale-up and energy gains for plant engineers
Reviewed by Tom Sullivan
First reported on The Construction Index
30 Second Briefing
Anglian Water’s Helea sludge treatment process and Haskoning’s Ephyra technology will be deployed at São Paulo’s Barueri and São Miguel wastewater treatment plants, marking the first international mega-city application of the simplified Helea Lite configuration. Barueri, Latin America’s largest WWTP, will boost capacity from 16,000 to 22,500 litres per second, while São Miguel will rise from 1,500 to 5,500 litres per second, together serving about 10 million people. Biogas from the upgraded processes will feed combined heat and power, thermal sludge drying and other on-site energy recovery uses.
Technical Brief
- Barueri and São Miguel WWTP upgrades are framed as “state-of-the-art energy recovery facilities”, not just treatment assets.
- Biogas utilisation includes on-site combined heat and power plus thermal sludge drying as discrete process streams.
- Energy-efficient sludge treatment was a primary design driver for Helea, targeting lower OPEX at large regional centres.
- Partnership structure sees Anglian Water as technology originator and Haskoning as delivery/commercial partner for export markets.
- Mega-city deployment of a simplified “Helea Lite” configuration signals a template for lower-complexity roll-out on other large WWTPs.
Our Take
Anglian Water’s export of its Helea/Ephyra process know‑how to the Barueri and São Miguel plants sits alongside a £1.5–1.6bn domestic upgrade push in eastern England in 2026, signalling that the utility is now treating international technology licensing as a parallel value stream to its AMP8 capital works.
Serving around 10 million people in São Paulo positions these Brazilian wastewater schemes at a much larger urban scale than Anglian Water’s UK wetlands and recycling-centre projects covered elsewhere in our database, so performance here will be a strong reference case for deploying the same process trains into other Latin American megacities.
With 15 years of development behind Helea and Helea Lite, the Barueri and São Miguel roll-out gives Haskoning and Anglian Water a chance to demonstrate that a mature UK-developed process can be adapted to higher-load, warmer-climate plants, which is likely to be scrutinised by other concessionaires in Latin America looking for lower-risk sustainability upgrades.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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