Following successful pilot testing, the Kloten Opfikon (AKO) wastewater treatment plant decided to enlarge its facility based on the Nereda® process and has commissioned WABAG Water Technology Ltd. in Winterthur in autumn 2016 with the realisation of the project, which has a value of more than EUR 8 million. The capacity of the existing plant is to be increased from 65,000 to 125,000 p.e. but does not require any additional area. This space- and cost-saving expansion is possible through the employment of aerobic granulated activated sludge using the Nereda® system, as this high-performance process can be easily integrated into the existing activation tanks. WABAG is the sole supplier of Nereda® in Switzerland.