The municipality of Strömstad in Sweden has selected Royal HaskoningDHV’s Nereda technology for a new wastewater treatment facility.

The Nereda wastewater treatment method eliminates the need of using any chemicals in the purification of water and is based on a patented aerobic granular sludge technology.

Jerry Johansson of the municipality of Strömstad said that the city needed to increase the capacity of the wastewater treatment works and at the same time had to keep a check on the operational costs and energy consumption.

Various types of wastewater treatment technology were looked into before finalizing on Nereda, added Johansson who is responsible for the new wastewater plant.

Royal HaskoningDHV said Strömstad was also looking for the most competitively priced solution in terms of the plant’s initial construction and its operational costs throughout its lifetime.

Royal HaskoningDHV project manager Bert Bakker said: “This technology has been tried and tested all over the world, from hot and arid conditions in South Africa to very cold winters in Poland so we knew that low temperatures in Sweden would not present a problem.

“It also can easily adapt between high and low volumes of wastewater. When it comes to long term running costs, Nereda is so efficient, particularly in terms of energy consumption, that it was by far the most competitive solution.”

The new Strömstad wastewater treatment plant which recently broke ground is slated to be operationally ready by June next year. Its mechanical equipment will be delivered and installed by Econet Vatten & Miljöteknik.