1. Re-aeration study of effluent from a wastewater treatment plant
- Author
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Anastasia Macario and Ernesto Infusino
- Subjects
Work (thermodynamics) ,Jet (fluid) ,Chemistry ,Process Chemistry and Technology ,0208 environmental biotechnology ,05 social sciences ,Environmental engineering ,02 engineering and technology ,Mechanics ,020801 environmental engineering ,Hydraulic structure ,Wastewater ,0502 economics and business ,Weber number ,Sewage treatment ,Safety, Risk, Reliability and Quality ,Waste Management and Disposal ,Effluent ,Hydraulic jump ,050203 business & management ,Biotechnology - 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.
- Published
- 2017
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