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Chemical Oxidation as a Stage of Highly Efficient Technologies for Textile Wastewater Treatment

Research and development

Authors:

  • Kos Lech
    Textile Research Institute, Łódź, Poland
  • Perkowski Jan
    Institut of Applied Radiation Chemistry, Technical University of Lodz, Łódź, Poland

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Abstract:

The aim of the study was to determine the biological degradability of pollutants in textile wastewater exposed to the action of various oxidants used either separately or in different combinations. The oxidising agents were ozone, hydrogen peroxide and UV radiation. Researches were carried out using textile wastewater of different concentrations and compositions, including concentrated washing and dye baths, general averaged process wastewater and washing wastewater. It was found that oxidation processes appeared to be the most efficient methods for degradation of organic compounds present in wastewater. This was confirmed by decreasing COD values. However, in the case of BOD it was not so obvious. On the one hand, we could observe a decrease in its value, which was evidence of the decomposition of biodegradable organic compounds exposed to oxidation processes, but on the other, in many cases an increase in BOD was reported, which provided evidence of the degradation of organic compounds that were difficult to degrade biologically and of formation of more biodegradable compounds. It follows from the researches that ozone is the oxidizing agent which ensures the greatest increase in wastewater biodegradability. Special attention should be given to the selection of its proper doses.

Tags: chemical oxidation, ozone, hydrogen peroxide, UV light, biodegradability

Citation: Kos L., Perkowski Jan.; Chemical Oxidation as a Stage of Highly Efficient Technologies for Textile Wastewater Treatment. FIBRES & TEXTILES in Eastern Europe 2009, Vol. 17, No. 5 (76) pp. 99-105.

Published in issue no 5 (76) / 2009, pages 99–105.

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