|
|
|
| Catalytic wet air oxidation of BIPB chemical process wastewater in trickle bed reactor |
1.School of Environment,Jiangsu University,Zhenjiang,Jiangsu 212013,China; 2.State Key Laboratory of Pollution Control and Resource Reuse,Tongji University,Shanghai 200092,China; 3.Water Supply ＆ Wastewater Drainage Research Division,North China Municipal Engineering Design ＆ Research Institute,Tianjin 300074,China）
|
|
|
|
|
Abstract A high-strength organic wastewater,which needs to be treated cost-effectively in China,was disposed by catalytic wet air oxidation（CWAO） in a trickle bed reactor（TBR）. The fixed bed reactor was operated in a trickle flow regime by adjusting the hydrodynamic parameters. The loaded catalyst composed of active components,manganese and cerium oxides,was developed and was characterized by its high activity and stability. TOC removal efficiency was increased by 20 percent compared to wet air oxidation（WAO） at the same conditions. Moreover,the catalyst was kept comparatively stable activity within 50 hours. Metal cation leaching of the active components was relatively low. The organics in the wastewater were effectively removed even at short space time（9.43 min）. The contaminant removal efficiency was not significantly enhanced at longer space time. Various high-strength organic wastewaters had little effect on the CWAO treatment.
|
|
|
|
|
|
|
|
|
2009, Vol. 30 
