Decolorization of Wastewater Produced in a Pyrolysis Process by Ozone: Enhancing the Performance of Ozonation

Abstract

This paper shows the results of color removal from a wastewater produced in a plastic pyrolysis process by ozonation. The influence of parameters such as temperature, reactor geometry, UVA, ozone input, and finally spraying of wastewater on performance enhancement of the decolorization process will be discussed. Due to the long residence time of O₃ molecules in the gaseous phase, recycling and spraying the wastewater in a pre-filled ozone chamber show a remarkable effect on decreasing the decolorization process time. At the end of this paper, an application of “micro-bubble producer” in this field, and its advantages will be introduced.

Keywords:

• Ozone
• Decolorization
• Pyrolysis
• Spray
• Micro-Bubble

ACKNOWLEDGMENTS

This work was supported financially by the chair of Atmospheric Chemistry and Air pollution Control, Brandenburg University of Technology (BTU Cottbus) and DBU (Deutsche Bundesstiftung Umwelt).