Enhancing Agro-Industrial Wastewaters Depuration by Ozone Oxidation

摘要

This article explores the application of several ozone-based technologies on the abatement of a bio-refractory stream coming from an elderberry juice plant (BOD₅/COD = 0.26). The impact of ozone inlet concentration and pH was addressed firstly, followed by the analysis of the O₃+H₂O₂ combined system. Finally, the activity and stability of two solid catalysts (Mn-Ce-O and Fe-Mn-O) was assessed. None of the approaches produced values within the legal thresholds for direct discharge into water-courses. It is advisable to integrate the chemical treatment with a bio-reactor. Thus, single ozonation at pH = 3 (BOD₅/COD = 0.48), O₃+[H₂O₂] = 32.5 mM (BOD₅/COD = 0.46) and O₃+Mn-Ce-O at pH = 3 (BOD₅/COD = 0.44) are promising strategies.View full textDownload full textKeywordsOzone, Biodegradability Enhancement, Catalytic Ozonation, Ozonation, Hydrogen Peroxide, Agro-industrial wastewaters, Agri-food ApplicationsRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/01919512.2012.713296