doiSerbia

Numerical modeling of hypolimnetic oxygenation by electrolysis of water

Jaćimović Nenad M. (Faculty of Civil Engineering, Department of Hydraulic and Environmental Engineering, Belgrade)
Hosoda Takashi (Kyoto University, Kyoto, Japan)
Park Ho-Dong (Shinshu University, Matsumoto, Japan)
Ivetić Marko V. (Faculty of Civil Engineering, Department of Hydraulic and Environmental Engineering, Belgrade)

The paper presents a novel method for hypolimnetic oxygenation by electrolysis of water. The performance of the method is investigated by the laboratory and the field experiment. The laboratory experiment is conducted in a 90 L vessel, while the field experiment is conducted at the lake Biwa in Japan. In order to provide a better insight into involved processes, a numerical model for simulation of bubble flow is developed with consideration of gas compressibility and oxygen dissolution. The model simultaneously solves 3-D volume averaged two-fluid governing equations. Developed model is firstly verified by simulation of bubble flow experiments, reported in the literature, where good qualitative agreement between measured and simulated results is observed. In the second part, the model is applied for simulation of conducted water electrolysis experiments. The model reproduced the observed oxygen concentration dynamics reasonably well.

Keywords: eutrophication, electrolysis, oxygenation, numerical model

Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 37009