Experimental Study on Photocatalytic Pretreatment of Restaurant Wastewater with Nano TiO2

Jin Yong Huang; Li Bin Peng; Lin Peng

doi:10.4028/www.scientific.net/AMR.807-809.1575

Paper Titles

Study on Preparation and Photoelectrocatalytic Activity of Supported TiO₂ Catalysts
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Oxalic Acid Enhances Remediation of Cr Contaminated Soil in Leersia Hexandra Swartz
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Influence of Alkalinity on Partial Nitrification Treating Domestic Sewage and the Microbial Community in MBR
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A New Traceability Method for Sudden Water Pollution Accidents
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Experimental Study on Photocatalytic Pretreatment of Restaurant Wastewater with Nano TiO₂
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Remediation of Perchloroethylene Contaminated Groundwater by Zero-Valent Iron Integrated with Anaerobic Microbial Community
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Low-Temperature Catalytic Clearing of Gases of Thermal Power Station from Harmful Impurity in the Presence of the Cobalt Complexes Fixed on a Polymeric Matrix
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Characteristics of Suspended Sediment and Resuspension Process in Wendeng Coastal Area, Shandong Peninsula
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Evaluation of Water Resource Based on Carrying Capacity in Gansu
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Experimental Study on Photocatalytic Pretreatment of Restaurant Wastewater with Nano TiO₂

Abstract:

The study aims at investigating the performance of nanoTiO₂ photocatalytic oxidation technology for the pretreatment of restaurant wastewater. The rate of lipids removal depends on conditions, such as irradiation time, TiO₂ dosage, aeration and addition of Fe³⁺ or H₂O₂.The optimal conditions are determined: proper time of irradiation 10 min, TiO₂ dosage 25mg/L,pH6.0, adding 5mL Fe³⁺. Under this optimum, the removal efficiency of lipids reaches 74.7 ~ 88.6%, and that of CODcr was around 45.2~76.2%.While using illumination for 10 min, companied with TiO₂ and Fe³⁺/H₂O₂, the removal efficiency of Grease could increase by 3%~15%.Thus, satisfactory results were achieved for pretreatment of Grease Wastewater from restaurant, and this technique could be used as a pretreatment step for next biological treatment of restaurant wastewater.