Integrated aerobic biological-chemical treatment of winery wastewater diluted with urban wastewater. LED-based photocatalysis in the presence of monoperoxysulfate

Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering
Rafael R SolísJosé A Peres

Abstract

The oxidation of Winery Wastewater (WW) by conventional aerobic biological treatment usually leads to inefficient results due to the presence of organic substances, which are recalcitrant or toxic in conventional procedures. This study explores the combination of biological and chemical processes in order to complete the oxidation of biodegradable and non-biodegradable compounds in two sequential steps. Thus, a biological oxidation of a diluted WW is carried out by using the activated sludge process. Activated sludge was gradually acclimated to the Diluted Winery Wastewater (DWW). Some aspects concerning the biological process were evaluated (kinetics of the oxidation and sedimentation of the sludge produced). The biological treatment of the DWW led to a 40-50% of Chemical Oxygen Demand (COD) removal in 8 h, being necessary the application of an additional process. Different chemical processes combining UVA-LEDs radiation, monoperoxysulfate (MPS) and photocatalysts were applied in order to complete the COD depletion and efficient removal of polyphenols content, poorly oxidized in the previous biological step. From the options tested, the combination of UVA, MPS and a novel LaCoO3-TiO2 composite, with double route of MPS decompo...Continue Reading

References

Nov 5, 2003·Environmental Science & Technology·George P Anipsitakis, Dionysios D Dionysiou
Aug 7, 2004·Environmental Science & Technology·George P Anipsitakis, Dionysios D Dionysiou
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Oct 27, 2007·Journal of Agricultural and Food Chemistry·Olga GimenoMaría Carbajo
Jan 31, 2015·Journal of Hazardous Materials·L A IoannouD Fatta-Kassinos

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Citations

Jan 6, 2021·Environmental Science and Pollution Research International·Silvana LuzFátima Carvalho

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Methods Mentioned

BETA
chemical treatment
biodegradation assay
irradiating

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