Application of frame loading for forming immobilized biocenosis in aeration tanks
https://doi.org/10.21285/2227-2917-2024-4-753-763
EDN: KIIBLF
Abstract
Intensification of wastewater treatment through the use of neutral artificial materials to create a fixed biocenosis represents a promising direction for enhancing the oxidation capacity of biological facilities utilizing multiple biocenoses. The study examines the kinetics of free-floating sludge concentration during its sedimentation on frame loading, which serves as a carrier for adsorbed sludge. The experiment was carried out in a bioreactor physical model presenting a planar transverse vertical section of an industrial bioreactor aeration tank. The study revealed a good dynamics in the formation of immobilized sludge on the frame loading, following exponential dependence. Uneven distribution of adsorbed sludge by loading volume is attributed to hydrodynamic flows in the cross-section of the aerated facility with a laterally positioned fine-bubble aerator. The efficiency of air medium-bubble regeneration of sludge immobilized on the frame loading was found to account for approximately 96%. The kinetics of biochemical oxygen consumption under aerobic conditions passes through four phases: no changes in sludge adaptation; exponential decrease; deceleration in the rate of biochemical oxygen consumption decrease and self-oxidation of sludge under endogenous respiration at constant minimum value of biochemical oxygen consumption. The results show a dependence of the dynamics of the wastewater treatment rate on the selected phases of change in biochemical oxygen consumption. The dependence exhibits an extreme character with a maximum in the zone corresponding to the activity of floating sludge and sludge formed on the frame loading.
About the Authors
V. N. Kulkov
Irkutsk National Research Technical University
Russian Federation
Competing Interests:
Russian Federation
Victor N. Kulkov, Dr. Sci. (Eng.), Professor, Professor of the Department of Engineering Communications and Life Support Systems
AuthorID: 730720
83 Lermontov St., Irkutsk 664074
Competing Interests:
The authors declare no conflict of interests regarding the publication of this article.
E. Yu. Solopanov
Irkutsk National Research Technical University
Russian Federation
Competing Interests:
Russian Federation
Evgenii Yu. Solopanov, Cand. Sci (Eng.), Associate Professor of the Department of Applied Mathematics and Computer Science
AuthorID: 518365
83 Lermontov St., Irkutsk 664074
Competing Interests:
The authors declare no conflict of interests regarding the publication of this article.
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Review
For citations:
Kulkov V.N., Solopanov E.Yu. Application of frame loading for forming immobilized biocenosis in aeration tanks. Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost. 2024;14(4):753-763. (In Russ.) https://doi.org/10.21285/2227-2917-2024-4-753-763. EDN: KIIBLF
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