Veolia to build unique Swiss drinking water plant

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A Veolia-led consortium is to build a new drinking water plant in Lausanne, Switzerland with a multi-barrier system to treat micropollutants that is unique in Switzerland and Europe.

The Service de l’eau de Lausanne (Lausanne Water Service) and Veolia, through its subsidiary OTV Switzerland, representing a consortium formed by OTV Switzerland, Amics and IDEM Suisse, signed a CHF44.8 million contract for the design, supply, construction and commissioning of equipment for the new Saint-Sulpice II drinking water production plant.

The plant will feature an innovative and scalable multi-barrier process composed of a treatment core featuring advanced oxidation, adsorption by activated carbon and ultrafiltration membranes. In addition, approximately 10–15% of the flow will be treated by nanofiltration to improve overall micropollutant removal.

With a nominal production capacity of over 100 000 cubic metres per day, the plant will provide 30–50% of the drinking water demand of the Lausanne region’s 380 000 inhabitants for 20 years. After obtaining the building permit, to be issued by the Canton of Vaud at the start of 2022, work should begin in 2023 with a first part commissioned in 2026. The entire plant should be completed in 2027–2028.

“The elimination of micropollutants and endocrine disruptors is an important issue; finding effective and sustainable solutions to address it is an integral part of Veolia’s ecological transformation process,” said Arnaud Valleteau de Moulliac, executive vice president Europe for Veolia Water Technologies. “The unique technological combination that we have offered to the Lausanne Water Service represents the best solution to meet water quality and public health objectives while controlling energy costs.”