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Tertiary Treatment of Real Abattoir Wastewater using Combined Acoustic Cavitation and Ozonation

Alfonso Muniozguren, Pello, Hazzwan Bohari, Mohd, Sicilia, Anita, Avignone Rossa, Claudio, Bussemaker, Madeleine, Saroj, Devendra and Lee, Judy (2020) Tertiary Treatment of Real Abattoir Wastewater using Combined Acoustic Cavitation and Ozonation Ultrasonics Sonochemistry, 64, 104986.

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Abstract

This work reports the influence of ultrasound alone and combined with ozone for the treatment of real abattoir wastewater. Three different frequencies were studied (44, 300 and 1000 kHz) at an applied power of 40 W. The injected ozone dose was fixed at 71 mg/L and the treatment time varied from 1 to 60 min. Using ultrasound alone, 300 kHz was the only frequency showing a reduction in chemical oxygen demand (COD, 18% reduction) and biological oxygen demand (BOD, 50% reduction), while no diminution in microbial content was measured for any of the frequencies studied. Combining ultrasound with ozone, on the contrary, led to a significant decrease in COD (44%) and BOD (78%) removal for the three frequencies under study. A complete inactivation of total coliforms (TC) was obtained, as well as a final value of 99 CFU/mL in total viable counts (TVC, 5 log reduction). That is, the ozonation-sonication combined system was the only treatment method (compared to sonication and ozonation alone) reaching direct discharge limits, as well as meeting drinking water standards for microbial disinfection (TC and TVC).

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Chemical and Process Engineering
Authors :
NameEmailORCID
Alfonso Muniozguren, Pellop.alfonso@surrey.ac.uk
Hazzwan Bohari, Mohd
Sicilia, Anitaa.sicilia@surrey.ac.uk
Avignone Rossa, ClaudioC.Avignone-Rossa@surrey.ac.uk
Bussemaker, Madeleinem.bussemaker@surrey.ac.uk
Saroj, DevendraD.Saroj@surrey.ac.uk
Lee, Judyj.y.lee@surrey.ac.uk
Date : 23 January 2020
Funders : Biotechnology and Biological Sciences Research Council (BBSRC)
DOI : 10.1016/j.ultsonch.2020.104986
Grant Title : BBSRC Grant
Copyright Disclaimer : © 2020 Elsevier B.V. All rights reserved.
Depositing User : James Marshall
Date Deposited : 28 Feb 2020 09:48
Last Modified : 28 Feb 2020 09:48
URI: http://epubs.surrey.ac.uk/id/eprint/853844

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