International Special Edition 2022/23 Water Balance in Settlement Areas Page 6 Performance Report for Municipal Waste­ water Treatment Plants in Germany and Austria Page 12 Clear Concepts. Clean Environment. Water Management Wastewater Treatment BSK ® -TURBINE The Surface Aerator for municipal and industrial applications MADE OF STAINLESS STEEL no corrosion, almost unlimited lifetime NO EFFICIENCY LOSS in oxygen transfer rate LESS SPRAY AND AEROSOLS due to channelled ejection of water HIGH EFFICIENCY up to 2.8 kg O2/kWh www.bsk-turbine.com Sewage Sludge and Methane Page 20 Non-Potable Water Reuse Page 28 © Innsbrucker Kommunalbetriebe AG