More than 50% of the energy consumed by water treatment plants is used to generate compressed air for the biological purification process. The aeration system is usually operated with a constant pressure in the collector pipe. A possible approach to save energy during this process is to adjust the pressure to the actual requirements. During a period of low load, a lower pressure is sufficient to convey the amount of air necessary for the decomposition processes.
The Aqualogic® control system offers this option with the Enerlogic® pressure control. Based on Fuzzy Logic, the optimal pressure is calculated based on the ammonium load and the compressor power is automatically adjusted.