IMPACT OF STATIC MAGNETIC FIELD ON EFFICIENCY OF FINE-BUBBLE AERATION OF LIQUID
Paulina Rusanowska 1  
,  
Marcin Zieliński 1  
,  
 
 
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Katedra Inżynierii Środowiska, Wydział Nauk o Środowisku, Uniwersytet Warmińsko-Mazurski, ul. Warszawska 117A, 10-720 Olsztyn
CORRESPONDING AUTHOR
Paulina Rusanowska   

Katedra Inżynierii Środowiska, Wydział Nauk o Środowisku, Uniwersytet Warmińsko-Mazurski, ul. Warszawska 117A, 10-720 Olsztyn
Publication date: 2017-04-01
 
Inż. Ekolog. 2017; 2:130–135
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ABSTRACT
Aeration is the main item in the operating costs of most wastewater treatment plants. New, efficient methods of aeration are constantly requested. Even a small increase in the efficiency on the larger scale of the process provides significant financial savings. The paper presents the possibility of increasing the efficiency of oxygen transfer through the use of a static magnetic field. The aim of the study was to evaluate impact of static magnetic field on efficiency of fine-bubble aeration of liquid. The experiment were conducted in constant temperature (24°C) at pH 8.25. The aeration intensity was 58 L/h. The mean magnetic field induction ranged from 10 mT in a series 1, to 14 mT in a series 2 and 16 mT in a series 3. The OC value in case of the use of the lowest induction was 75.22 g/(m3•h). In series 2 the OC value was an average of 77.7 g/(m3•h). In series 3, when magnetic field with the highest induction was used, the OC value was 92.72 g/(m3•h). While in the control series, without the use of static magnetic field, the OC was only 60.5 g/(m3•h). Positive experiments results in laboratory scale tent to research on possibility for application of static magnetic field to enhance the efficiency of aeration in industrial devices.