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Technologies: MBR Low Energy Crossflow Operation
Crossflow MBR systems typically operate at constant high flow velocities to ensure adequate turbulence and minimisation of membrane fouling. This can make the technology expensive due to high power requirements. However, Wehrle has developed Low Energy Crossflow (LEC) operation to alleviate this problem by combining the benefits of high turbulence with low energy consumption. Extensive research and development has allowed us to develop an innovative control system that switches feed pump speed on optimised low and high flow cycles.
Low energy crossflow operation: high energy and low energy cycles of the process
In a typical industrial crossflow MBR system the standard energy component related to membrane operation typically consumes 2.5-4.0 kWh/m3 treated effluent but the LEC system operates at 1.1-1.5 kWh/m3, improving still further the overall industrial wastewater treatment system pay-back time.