Bacteriological quality of effluent submitted consecutively to a macrofiltration and ultraviolet light systems in the Tunisian conditions

Journal of Environmental Health Science & Engineering
Brahmi Mounaouer, Hassen Abdennaceur

Abstract

This paper deals with the study of bacteriological quality of effluents that have undergone consecutively different macrofiltration system (pressure sand filter or disc filter used as a secondary treatment) and UV254 irradiation process (used as a tertiary treatment). These two successive systems of treatment were evaluated to determine their possible application as commonly alternatives to the conventional system of wastewater treatment and disinfection before wastewater reuse. They both combined systems of wastewater treatment released effluent of excellent bacteriological quality, with almost total absence of feacal coliforms, of E. coli and of P. aeruginosa). However, if the bacteriological quality of the effluent remained constant in the case of macrofiltration system (disc filter or pressure sand filter); the UV disinfection process showed to deeply depend on the quality of effluent, particularly with regard to UV transmittance. The daily bacteriological monitoring of the secondary effluent at the exit of the pressure sand filter by UV reactor and by using a dose of 96 mJ/cm(2), corresponding to an exposure of 16 min, showed an average rate of inactivation of around 3 U-Log, for feacal coliforms, E. coli and P. aeruginosa...Continue Reading

References

Jun 5, 2003·Annals of the New York Academy of Sciences·Manuele MarcucciGuido Vernaglione
Dec 25, 2010·Journal of Environmental Sciences (China)·Mounaouer BrahmiAbdennaceur Hassen

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Citations

Jul 17, 2016·Environmental Science and Pollution Research International·Brahmi Mounaouer, Hassen Abdennaceur
Sep 24, 2016·World Journal of Microbiology & Biotechnology·Ana C Maganha de Almeida, Bríd Quilty
Feb 6, 2017·Journal of Water and Health·Warita Alves de MeloLilian Carla Carneiro

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Methods Mentioned

BETA
membrane filtration

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