Nereda technology is selected for the extension of the Alpnach Wastewater Treatment Plant in Switzerland. The innovative aerobic granular biomass technology provides an optimal and cost-effective solution to treat the wastewater as an alternative to conventional systems. The Nereda installation in Alpnach will be the first Nereda in Switzerland.
After start-up in 2017 Alpnach WWTP will treat a municipal and industrial effluent load of 49,000 p.e. (or 65,000 p.e. in accordance with Swiss calculations), with a daily average flow of 14,000 m3/day and a peak flow of 1,845 m3/hour. The Nereda installation is based on a configuration with 1 buffer tank and 3 Nereda reactors.
The extension of the Alpnach WWTP was tendered based on conventional SBR technology but WABAG Water Technology Switzerland – who signed a 10 year Cooperation Agreement with Royal HaskoningDHV in November 2014 to deliver Nereda to Switzerland – also evaluated the possibilities and advantages of the Nereda technology.
Gerhard Ryhiner, Chairman of the Managing Board WABAG Water Technology said: “The advantages of Nereda are convincing: a reduced footprint (-34%) and volume (-40%), and higher nitrogen removal in spite of the reduced volume.”