Intensification of the absorption of oxygen by water using a rotor-pulsating apparatus
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Дата
2022
Автори
Науковий керівник
Назва журналу
Номер ISSN
Назва тому
Видавець
КПІ ім. Ігоря Сікорського; ТОВ «Українська водна спілка»
Анотація
One of the important components of the quality of food products is the quality of water used. A common way to
remove unwanted impurities from water is aeration, i.e. the oxidation of chemical compounds in water by
oxygen. Aeration devices with mechanical energy input in comparison with other groups of devices, namely with
energy input with gas phase and with liquid phase, have low power consumption and additional mixing of the
processed medium. The work presents a study of oxygen absorption in water in an experimental setup with
rotor-pulsating apparatus for water treatment in beverage production technology. In this paper, the energy and
technological parameters of aeration of a model aqueous solution of a certain concentration of sodium sulfide in
an experimental setup with a rotor-pulsating apparatus as an aerator are determined. The experimental aeration
setup allows conducting research in several modes and consists in particular of a vessel, a rotor-pulsating
apparatus, two ejectors - one at the entrance to the rotor-pulsating, the other at the outlet, the recirculation
pipeline. Air from the atmosphere enters each of the ejectors through a separate air duct. The aeration of the
studied water took place in the recirculation mode for 20 minutes. Determination of the oxygen mass transfer
rate is determined by the iodometric titration method on the rate of oxidation of sodium sulfite. Experiments
were conducted without using a catalyst. It is determined that when placing the ejector unit at the rotorpulsating apparatus inlet at the angular rotor unit velocity of 240.02; 270.18, and 300.02 s-1, the oxygen mass
transfer rate is 1.39; 1.49 and 1.73 kg m3
/h. At the location of the ejector unit at the outlet of the rotor-pulsating
apparatus, the velocity of the oxygen mass transfer under the same conditions is 1.17; 1.36 and 1.63 kg m3
/h
respectively. However, the power consumption of the second scheme exceeds the power consumption by the first
scheme by 50%.
Опис
Ключові слова
aeration, ejector, mass transfer rate, rotor-pulsating apparatus, sodium sulfite, аерація, ежектор, швидкість масообміну, роторно-пульсаційний апарат, натрію сульфіт
Бібліографічний опис
Sablii, L. Intensification of the absorption of oxygen by water using a rotor-pulsating apparatus / L. Sablii, O. Obodovych, V. Sydorenko // Вода і водоочисні технології. Науково-технічні вісті. – 2022. – № 1(32). – С. 23-32.