<abstract xmlns="http://www.w3.org/1999/xhtml"><p>There are two categories of gas-liquid mixers: conventional and special-purpose. In theory, any conventional mixer can be applied to aerate a liquid, but fast-rotating devices are generally preferred. Special-purpose mixers (tubular, prismatic, cylindrical) have a hollow shaft, and operate by drawing gas from above the surface of the liquid and dispersing it inside the liquid. This process is referred to as aspirated aeration. In contrast, conventional mixers increase the pressure of the aspirated gas. Gas drawn from above the surface of the liquid flows through channels bored inside the shaft and the impeller, and is introduced to the liquid in this way. This article presents the results of an experiment investigating the aeration efficiency of a six-tube self-aspirating mixer at different rotational speeds. The experiment was conducted in a flow tank. The results indicate that self-aspirating mixers are effective devices for water aeration and mixing.</p></abstract>

There are two categories of gas-liquid mixers: conventional and special-purpose. In theory, any conventional mixer can be applied to aerate a liquid, but fast-rotating devices are generally preferred. Special-purpose mixers (tubular, prismatic, cylindrical) have a hollow shaft, and operate by drawing gas from above the surface of the liquid and dispersing it inside the liquid. This process is referred to as aspirated aeration. In contrast, conventional mixers increase the pressure of the aspirated gas. Gas drawn from above the surface of the liquid flows through channels bored inside the shaft and the impeller, and is introduced to the liquid in this way. This article presents the results of an experiment investigating the aeration efficiency of a six-tube self-aspirating mixer at different rotational speeds. The experiment was conducted in a flow tank. The results indicate that self-aspirating mixers are effective devices for water aeration and mixing.

Effect of Rotational Speed of a Self-Aspirating Mixer on Oxygen Saturation in Water

University of Warmia and Mazury in Olsztyn

Polish Maritime Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

There are two categories of gas-liquid mixers: conventional and special-purpose. In theory, any conventional mixer can be applied to aerate a liquid, but...

Effect of Rotational Speed of a Self-Aspirating Mixer on Oxygen Saturation in Water

Published Online: Sep 29, 2020

Page range: 182 - 188

DOI: https://doi.org/10.2478/pomr-2020-0060

Keywords
water aeration, self-aspirating mixer, tubular mixer

© 2020 Andrzej Wróblewski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effect of Rotational Speed of a Self-Aspirating Mixer on Oxygen Saturation in Water

Published Online: Sep 29, 2020

Page range: 182 - 188

DOI: https://doi.org/10.2478/pomr-2020-0060

Keywordswater aeration, self-aspirating mixer, tubular mixer

© 2020 Andrzej Wróblewski et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
water aeration, self-aspirating mixer, tubular mixer