DOI:
https://doi.org/10.14483/23448393.19845Published:
2023-10-18Issue:
Vol. 28 No. 3 (2023): September-DecemberSection:
Environmental EngineeringCharacterization of Microbubbles Generated in a Venturi Tube via Image Processing: Effect of Operating Parameters
ACaracterización de microburbujas generadas en un tubo Venturi mediante procesamiento de imágenes: efecto de los parámetros operativos
Keywords:
Dissolved air flotation, Microbubble, Venturi tube, Wastewater treatment (en).Keywords:
Flotación por aire disuelto, Microburbujas, Tratamiento de aguas residuales, Tubo venturi (es).Downloads
Abstract (en)
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.
Abstract (es)
Contexto: Esta investigación desarrolló un sistema de flotación por aire disuelto utilizando un tubo Venturi para producir microburbujas. El tubo Venturi sustituye el tanque de saturación y la válvula reductora de presión de los sistemas convencionales.
Método: El sistema tiene entradas de aire tanto por aspiración como por inyección, regula el flujo de recirculación del líquido al tanque y proporciona una alta carga hidráulica en un tamaño reducido. El conteo y la medición por procesamiento digital de imágenes de las microburbujas producidas ayuda a caracterizar el desempeño del sistema.
Resultados: El sistema de succión de aire produce burbujas más pequeñas que el de inyección de aire. Una mayor presión de recirculación del líquido produce más burbujas y reduce su tamaño en el caso de la succión de aire.
Conclusiones: En la inyección de aire, el cambio de caudal influye en el tamaño de las microburbujas. La inyección de aire y la presión de recirculación no influyen en el número de burbujas generadas.
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Copyright (c) 2023 Jhonnatan Stiven Mera-Campo, Jeimmy Adriana Muñoz-Alegría, Juan Fernando Flórez-Marulanda, Elena Muñoz-España
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