STUDY ON THE CATALYTIC WET OXIDATION OF REFINING WASTEWATER WITH COPPER-BASED CATALYSTS

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STUDY ON THE CATALYTIC WET OXIDATION OF REFINING WASTEWATER WITH COPPER-BASED CATALYSTS

Received:2009-10-22 Revised:1900-01-01 Online:2010-05-12 Published:2010-05-12

Abstract

Abstract: A series of copper-based catalysts having four metal components were prepared by co-precipitation method and the structure of the catalyst was characterized by XRD. The refining wastewater was treated by copper-based catalysts and the effects of catalyst preparation conditions including active components ratios and calcination temperatures on the COD removal rate were investigated as well as the wastewater treating process conditions. Results showed that using a Cu-Ni-Zn-Fe catalyst with molar ratios of Cu:Ni:Zn:Fe=1:1:2:1 and calcined at 500 ℃, under the optimal treating conditions of a temperature of 240 ℃, an oxygen partial pressure of 1.8 MPa and a treating time of 60 min, the COD removal rate reached 95.9 % and the catalyst exhibited good stability.

Key words: Catalytic Wet Oxidation, Catalyst, Wastewater Treatment, refining wastewater

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STUDY ON THE CATALYTIC WET OXIDATION OF REFINING WASTEWATER WITH COPPER-BASED CATALYSTS

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