Aeration air flow control on WWTP Jena

Aeration air flow control on WWTP Jena
June 16, 2016 Thomas Bleif
Thomas Bleif June 16, 2016
French German

Aeration air flow control on WWTP Jena

Aeration air flow control on WWTP Jena

At the sewage treatment plant of Jena in Germany four decentralized closing square-diaphragm control valves were replaced by Iris® Diaphragm Control Valves with a nominal diameter of DN 200 (8”). The adaptation to the existing pipeline was carried out with special flanges.

With the use of Iris® diaphragm control valves a substantial improvement of the oxygen control accuracy could be achieved. Control accuracies of oxygen set points of ± 0.1 mg O2 are now possible.

By precise adjustment and utilization of the Iris® valve operating parameters, the compressor pressure could also be reduced to a minimum.

By using of a sliding pressure control, the blower pressure could be reduced by 35 mbar with an optimum opening degree of the Iris® valve aperture from 70 to 95%. The resulting energy savings are in evaluation.

More detailed information under the following link: Air Control of WWTP Jena

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