In this work, we present an experimental study on the re-aeration of a biological effluent coming from a wastewater treatment plant located at sea level. The oxygen transfer efficiency has been calculated for a hydraulic structure characterized by three different weirs jumps (Bazin type). The experimental results have been compared with those obtained by two (and well known) empirical equations (Avery-Novak equation (Avery and Novak, 1978) and Thene equation (Thene, 1988)). These equations did not allow a well fitting of the experimental data. We proposed a modification of the Thene equation by inserting of the Weber number of the jet. By this new correlation, we obtained a good fitting of re-aeration data obtained for the studied hydraulic structure.

Re-aeration study of effluent from a wastewater treatment plant

Infusino E.;Macario A.
2017

Abstract

In this work, we present an experimental study on the re-aeration of a biological effluent coming from a wastewater treatment plant located at sea level. The oxygen transfer efficiency has been calculated for a hydraulic structure characterized by three different weirs jumps (Bazin type). The experimental results have been compared with those obtained by two (and well known) empirical equations (Avery-Novak equation (Avery and Novak, 1978) and Thene equation (Thene, 1988)). These equations did not allow a well fitting of the experimental data. We proposed a modification of the Thene equation by inserting of the Weber number of the jet. By this new correlation, we obtained a good fitting of re-aeration data obtained for the studied hydraulic structure.
Hydraulic jumps
Re-aeration efficiency
Wastewater
Weber number
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11770/314975
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