A simple technique for water disinfection with hydrodynamic cavitation: Effect on survival of Escherichia coli

Mežule, Linda; Tsyfansky, S.L.; Yakushevich, V.; Juhna, Tālis

doi:10.1016/j.desal.2008.05.051

Cited by 74 publications

(33 citation statements)

References 21 publications

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“…Usando la tarifa eléctrica industrial en Ecuador de 9,1 centavos el kilovatio hora [5] se obtiene un costo de 7.04 centavos de dólar por el tratamiento a 3 bar de presión de descarga. Por lo que se evidencia la factibilidad económica de este proceso como desinfectante físico en comparación con la cloración, considerado el método más común para desinfección de bacteria que presenta desventajas peligrosas para la salud humana, incluida la formación de subproductos de desinfección cancerígenos y la aparición de problemas de sabor y olor en el agua procesada [10]. Sin embargo, su uso en Ecuador se debe a que esta técnica es más barata en dos órdenes de magnitud en comparación con el método físico de cavitación descrito en este artículo [2].…”

Section: Eficiencia Energéticaunclassified

Desinfección bacteriana de aguas residuales utilizando cavitación hidrodinámica a través de un tubo Venturi

Flores

Cevallos

2018

CCTESPE

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Resumen-Este estudio muestra un proceso de desinfección bacteriana de las aguas contaminadas del Río Santa Clara utilizando un método de cavitación hidrodinámica. Se utilizó un circuito de prueba cerrado con posibilidad de controlar la velocidad de flujo y la presión estática. El comportamiento de la cavitación ha sido capturado por un sensor de temperatura, tres sensores de presión y una cámara de alta velocidad. El resultado del experimento muestra que la cavitación hidrodinámica es un método físico, energéticamente eficiente y, por lo tanto, puede considerarse como una técnica potencial para un esquema de tratamiento de agua a gran escala. Así como, que luego de tratar el agua durante el mismo tiempo a distintas presiones de descarga se evidencia que cuando la presión de descarga aumenta, el grado de eficiencia de desinfección también aumenta. Palabras Claves-Desinfección bacteriana, cavitación hidrodinámica.Abstract-This paper shows a bacterial disinfection process of the polluted waters of the Santa Clara River using a hydrodynamic cavitation method. A closed test circuit was used with the possibility of controlling flow velocity and the static pressure. A temperature sensor, three pressure sensors and a high-speed camera have captured the behavior of the cavitation. The result of the study shows that hydrodynamic cavitation is a physical, energy efficient method and, therefore, can be seen as a potential capability for a large-scale water treatment scheme. As well as, after treating the water during the same time at different discharge pressures it is evident that when the discharge pressure increases, the degree of disinfection efficiency also increases.

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Section: Eficiencia Energéticaunclassified

Desinfección bacteriana de aguas residuales utilizando cavitación hidrodinámica a través de un tubo Venturi

Flores

Cevallos

2018

CCTESPE

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“…those conditions found in the Venturi tubes). Mezule et al (2009) investigated the effect of hydrodynamic cavitation on disinfection of E. coli at a laboratory scale operation. The cavitation was generated using a rotor, driven by a simple milling cutter, in the thin layer of water, which was circulated from, and to a reservoir.…”

Section: Water Disinfectionmentioning

confidence: 99%

Hydrodynamic Cavitation for Food and Water Processing

Gogate

2010

Food Bioprocess Technol

153

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Hydrodynamic cavitation, which was and is still looked upon as an unavoidable nuisance in the flow systems, can be a serious contender as an alternative to acoustic cavitation for intensification of different physical and chemical processing applications. Hydrodynamic cavitation results in the generation of hot spots, highly reactive free radicals and turbulence associated with liquid circulation currents, which can result in the intensification of various physical/chemical operations. The present work highlights the different aspects of hydrodynamic cavitation including the basic mechanism, bubble dynamics analysis with recommendations for optimum operating parameters, reactor designs and an overview of applications in different areas of food and water processing. The major applications discussed in the work include food sterilization, microbial cell disruption for the release or extraction of enzymes, water disinfection and wastewater treatment. It appears that hydrodynamic cavitation results in conditions similar to those generated using acoustic cavitation but at comparatively much larger scale of operation and with better energy efficiencies.

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“…However, until now studies were limited to analyses on water disinfection by disruption of Escherichia coli (Chand et al, 2007;Mezule et al, 2009) and zooplankton (Sawant et al, 2008), and little information is available in the literature on the removal of algae by HC (Gogate, 2011;Gogate and Kabadi, 2009;Nakano et al, 2001).…”

Section: Introductionmentioning

confidence: 98%

The effect of hydrodynamic cavitation on Microcystis aeruginosa: Physical and chemical factors

Yuan

et al. 2015

Chemosphere

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A simple technique for water disinfection with hydrodynamic cavitation: Effect on survival of Escherichia coli

Cited by 74 publications

References 21 publications

Desinfección bacteriana de aguas residuales utilizando cavitación hidrodinámica a través de un tubo Venturi

Desinfección bacteriana de aguas residuales utilizando cavitación hidrodinámica a través de un tubo Venturi

Hydrodynamic Cavitation for Food and Water Processing

The effect of hydrodynamic cavitation on Microcystis aeruginosa: Physical and chemical factors

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