Theoretical Determination of the Permissible Circulation Intensity in Cylindrical Airlift Bioreactors-Clarifiers
Abstract: The article presents a comparison of cylindrical (round in plan) and rectangular in terms of airlift biological clarifier reactors. Airlift bioreactors-clarifiers are facilities for wastewater treatment. Biological purification processes take place in them with the help of activated sludge, to ensure the respiration of which a flooded airlift is used, and clarification of the sludge mixture in a suspended layer of sludge. The influence of the intensity of the sludge mixture circulation in airlift bioreactors on the upstream velocity in clarifiers is analyzed. In the FlowVision software package, using a quadratic k-e turbulence model, the calculation of fluid velocities in the studied treatment facilities was performed. Based on the results of calculations, some of which are presented in this article, a theoretical ratio of the maximum allowable circulation intensities in cylindrical and rectangular airlift bioreactors-clarifiers is obtained.
Keywords: airlift bioreactor, bioreactor-clarifier, FlowVision, waste water treatment.
Pages: 5-10.
For citation: Zavorotnyi, D. V.; Uvarova, A. M. Theoretical Determination of the Permissible Circulation Intensity in Cylindrical Airlift Bioreactors-Clarifiers. – Text : electronic. – In: Proceeding of the Donbas National Academy of Civil Engineering and Architecture. – 2021. – Issue 2021-5(151) Engineering systems and man-made safety. – Р. 5-10. – URL: https://donnasa.ru/publish_house/journals/vestnik/2021/2021-5(151)/st_01_zavorotnyi_uvarova.pdf (date of access: 19.11.2024). – ISSN 2519-2817.
Issue 2021-5 (151)
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture
Journal: Proceeding of the Donbas National Academy of Civil Engineering and Architecture
Publish house: Donbas National Academy of Civil Engineering and Architecture