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Degradation and Cod Removal of Catechol in Wastewater Using the Catalytic Ozonation Process Combined With the Cyclic Rotating-Bed Biological Reactor Publisher Pubmed



Aghapour AA1, 2 ; Moussavi G1 ; Yaghmaeian K3
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
  2. 2. Department of Environmental Health Engineering, School of Public Health, Urmia University of Medical Sciences, Urmia, Iran
  3. 3. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

Source: Journal of Environmental Management Published:2015


Abstract

The effect of ozonation catalyzed with MgO/granular activated carbon (MgO/GAC) composite as a pretreatment process on the performance of cyclic rotating-bed biological reactor (CRBR) for the catechol removal from wastewater has been investigated. CRBR with acclimated biomasses could efficiently remove catechol and its related COD from wastewater at organic loading rate (OLR) of 7.82kg COD/m3.d (HRT of 9h). Then, OLR increased to 15.64kg COD/m3.d (HRT of 4.5h) and CRBR failed. Catalytic ozonation process (COP) used as a pre-treatment and could improve the performance of the failed CRBR. The overall removal efficiency of the combined process attained respective steady states of 91% and 79% for degradation and COD removal of catechol. Therefore, the combined process is more effective in degradation and COD removal of catechol; it is also a viable alternative for upgrading industrial wastewater treatment plant. © 2015 Elsevier Ltd.
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