Field Techniques for Evaluating Aerators

Conway, Richard A.; Kumke, Gordon W.

doi:10.1061/jsedai.0000636

Cited by 4 publications

(1 citation statement)

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“…To provide a uniform basis of comparison of different systems, K L a is evaluated at standard conditions [17][18][19]. At standard conditions (clean water at 20°C temperature and 1 atmosphere pressure), volumetric oxygen transfer coefficient can be evaluated as…”

Section: Parameters Describing the Oxygen Mass Transfer By Plunging Water Jetsmentioning

confidence: 99%

Experimental Study on Oxygen Mass Transfer Characteristics by Plunging Hollow Jets

2020

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Aeration by plunging water jets is an effective and economical method of transferring oxygen into the receiving pool of water. A dispersion of air bubbles occurs underneath the pool surface as a high-velocity liquid jet plunges on the water surface after being ejected from a particular fall height. The present study aims to investigate the impact of jet velocity, jet length, water depth and jet thickness of plunging hollow jets in oxygenating the water in the aeration tank. Empirical correlations are proposed for the determination of volumetric oxygen transfer coefficient based on jet velocities and jet kinetic powers. Moreover, the oxygen transfer capacity of single hollow jet, double hollow jet and a dual jet (combined hollow and solid) is tested by keeping a nearly constant jet flow area through the jet openings. The observations recorded from the experimental analysis lead to the development of predictive relationships for estimating the values of volumetric oxygen transfer coefficient in terms of basic jet variables. KeywordsSingle hollow jet • Double hollow jet • Jet length • Oxygen transfer • Jet velocity B Munish Kumar

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Section: Parameters Describing the Oxygen Mass Transfer By Plunging Water Jetsmentioning

confidence: 99%

Experimental Study on Oxygen Mass Transfer Characteristics by Plunging Hollow Jets

2020

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Oxygen transfer study and modeling of plunging hollow jets

2018

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Experiments were performed to study the effect of jet angle of hollow jet aerators on oxygen transfer of water. Three jet angles of 30°, 45° and 60° were used to produce hollow jets impingement on the water in the pool. Results from experimental study showed a significant effect of hollow jet angle on volumetric oxygen transfer coefficient (K L a) at higher jet velocities. Standard oxygen transfer efficiency (SOTE) of 60° hollow jet aerators is observed higher with low-kinetic-power jets, but at higher kinetic power, 30° hollow jet aerator is observed to be the best in terms of SOTE. Moreover, modeling performance of the experimental data is evaluated by training and testing of the models, and empirical equations derived from multiple linear and multiple nonlinear regression techniques are compared with artificial neural network approach. The results of the present study are also compared with the previous studies of plunging jet aerators.

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The Influence of Suspended Solids on the Rate of Oxygen Transfer in Aqueous Solutions

Kroon

1969

Advances in Water Pollution Research

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Field Techniques for Evaluating Aerators

Cited by 4 publications

References 0 publications

Experimental Study on Oxygen Mass Transfer Characteristics by Plunging Hollow Jets

Experimental Study on Oxygen Mass Transfer Characteristics by Plunging Hollow Jets

Oxygen transfer study and modeling of plunging hollow jets

The Influence of Suspended Solids on the Rate of Oxygen Transfer in Aqueous Solutions

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