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Ingeniería
versão impressa ISSN 0121-750X
Resumo
MERA-CAMPO, Jhonatan Stiven; MUNOZ-ALEGRIA, Jeimmy Adriana; FLOREZ-MARULANDA, Juan Fernando e MUNOZ-ESPANA, Elena. Characterization of Microbubbles Generated in a Venturi Tube via Image Processing: Effect of Operating Parameters. ing. [online]. 2023, vol.28, n.3, e19845. Epub 26-Dez-2023. ISSN 0121-750X. https://doi.org/10.14483/23448393.19845.
Context:
This research developed a dissolved air flotation system using a Venturi tube to produce microbubbles. The Venturi tube replaces the saturation tank and the pressure-reducing valve of conventional systems.
Method:
The system has both suction and injection air inlets, regulates the recirculation flow of the liquid to the tank, and provides a high hydraulic load in a reduced size. Counting and measuring the microbubbles produced via digital image processing helps to characterize the system’s performance.
Results:
The system with air suction produces smaller bubbles than that with air injection. A higher liquid recirculation pressure produces more bubbles and reduces their size in the case of air suction.
Conclusions:
In air injection, the change in flow rate influences the size of the microbubbles. Air injection and recirculation pressure do not influence the number of bubbles generated.
Palavras-chave : dissolved air flotation; microbubble; Venturi tube; wastewater Treatment..