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Application of a novel hydrodynamic cavitation system in wastewater treatment plants

TitoloApplication of a novel hydrodynamic cavitation system in wastewater treatment plants
Tipo di pubblicazioneArticolo su Rivista peer-reviewed
Anno di Pubblicazione2015
AutoriLangone, Michela, Ferrentino R., Trombino G., D. De Puiseau Waubert, Andreottola G., Rada E.C., and Ragazzi M.
RivistaUPB Scientific Bulletin, Series D: Mechanical Engineering
Volume77
Paginazione225-234
ISSN14542358
Parole chiaveactivated sludge, Activated sludge process, Aerobic bacteria, anaerobic bacterium, Bacteria, biodegradability, Biodegradation, Cavitation, Chemical oxygen demand, Dyes, fluid dynamics, Hydrodynamic cavitations, hydrodynamics, Microbial activities, Microbial cells, Solubilisation, Solubility, Specific energy input, Wastewater treatment, Wastewater treatment plants
Abstract

In the present work, a novel hydrodynamic cavitation system has been used for the treatment of activated sludge, in order to evaluate the solubilisation of matter, the biodegradability improvement, and the effects on microbial activity. Experiments performed in this study indicate that solubilisation of chemical oxygen demand (COD) increased with specific supplied energy applied. For specific energy input of 1,250 kJ/kg of total solids, the microbial activity of the aerobic and anaerobic bacteria investigated was preserved, while specific energy input of 2,500 kJ/kg of total solids damaged the bacterial cells. Based on the results, in this paper different fields of applications of the novel hydrodynamic cavitation system in wastewater treatment schemes are suggested. © 2009 Universitatea Politehnica Bucuresti.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84926460510&partnerID=40&md5=248d13e7feeeac2fd30d64c344b935e1
Citation KeyLangone2015225