The Determination of the Oxygen Transfer Speed in Water in Non-Stationary Conditions

Abstract

The paper presents a method for computing the oxygen transfer speed in water in non-stationary conditions. The theoretical results are verified by experimental researches performed on a new type of fine bubbles generator; the variation of O2 concentration in water is measured electrically, using an oxygen meter.

Reasearches Regarding the Measurements of the Dissolved Concentration in Water

“…The setup was designed and built in the frame of the laboratory of the Department of Thermotechnics, Engines, Thermic and Refrigeration Plants in order to research water oxygenation processes [11,12]. The water from the public network is introduced in a tank (10) and the compressed air spread in water using the fine bubble generator (FBG) (13) will lead to the increase of the concentration of oxygen dissolved in water, increase conditioned by the working time of the FBG.…”

The Determination of Dissolved Oxygen Concentration in Stationary Water

“…The description of the experimental setup. The setup was designed and built in the frame of the laboratory of the Department of Thermotechnics, Engines, Thermic and Refrigeration Plants in order to research water oxygenation processes [9,10]. The water from the public network is introduced in a tank (10) and the compressed air spread in water using the fine bubble generator (FBG) (13) will lead to the increase of the concentration of oxygen dissolved in water, increase conditioned by the working time of the FBG.…”

“…The setup was designed and built in the frame of the laboratory of the Department of Thermotechnics, Engines, Thermic and Refrigeration Plants in order to research water oxygenation processes [9,10]. The water from the public network is introduced in a tank (10) and the compressed air spread in water using the fine bubble generator (FBG) (13) will lead to the increase of the concentration of oxygen dissolved in water, increase conditioned by the working time of the FBG. 11-mechanism for probe driving; 12-oxygen meter probe; 13-FBG; 14-holder for the plant; 15-control electronics Concentration of the oxygen dissolved in water is measured with a digital display oxygen meter that uses the principle of the electric method [4].…”