The effect of pre-ozonation on the H2O2/UV-C treatment of raw and biologically pre-treated textile industry wastewater

I. Arslan Alaton; I. A. Balcioǧlu

doi:10.2166/wst.2002.0438

The effect of pre-ozonation on the H₂O₂/UV-C treatment of raw and biologically pre-treated textile industry wastewater

I. Arslan Alaton^*, I. A. Balcioǧlu

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

Advanced chemical oxidation of raw and biologically pretreated wastewater by ozonation, H₂O₂/UV-C treatment and the successive combination of ozonation and H₂O₂/UV-C oxidation was investigated. For the raw textile wastewater, the application of successive O₃ + H₂O₂/UV-C oxidation enhanced the COD and TOC removal efficiency of the H₂O₂ (50mM)/UV-C process by a factor of 13 and 4, respectively. In case of the biotreated textile wastewater, the preliminary ozonation step increased COD removal of the H₂O₂ (10mM)/UV-C treatment system from 15% to 62%, and TOC removal from 0% to 34%, but did not appear to be more effective than applying a single ozonation process in terms of TOC abatement rates. Enhancement of the biodegradability was more pronounced for the biologically pre-treated wastewater with a two fold average increase in the BOD₅/COD ratio for the studied chemical oxidation systems.

Original language	English
Pages (from-to)	297-304
Number of pages	8
Journal	Water Science and Technology
Volume	45
Issue number	12
DOIs	https://doi.org/10.2166/wst.2002.0438
Publication status	Published - 2002

Keywords

Advanced oxidation processes
EE/M
EE/O
HO/UV-C
Ozonation
Textile industry wastewater

UN SDGs

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10.2166/wst.2002.0438

Cite this

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title = "The effect of pre-ozonation on the H2O2/UV-C treatment of raw and biologically pre-treated textile industry wastewater",

abstract = "Advanced chemical oxidation of raw and biologically pretreated wastewater by ozonation, H2O2/UV-C treatment and the successive combination of ozonation and H2O2/UV-C oxidation was investigated. For the raw textile wastewater, the application of successive O3 + H2O2/UV-C oxidation enhanced the COD and TOC removal efficiency of the H2O2 (50mM)/UV-C process by a factor of 13 and 4, respectively. In case of the biotreated textile wastewater, the preliminary ozonation step increased COD removal of the H2O2 (10mM)/UV-C treatment system from 15% to 62%, and TOC removal from 0% to 34%, but did not appear to be more effective than applying a single ozonation process in terms of TOC abatement rates. Enhancement of the biodegradability was more pronounced for the biologically pre-treated wastewater with a two fold average increase in the BOD5/COD ratio for the studied chemical oxidation systems.",

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N2 - Advanced chemical oxidation of raw and biologically pretreated wastewater by ozonation, H2O2/UV-C treatment and the successive combination of ozonation and H2O2/UV-C oxidation was investigated. For the raw textile wastewater, the application of successive O3 + H2O2/UV-C oxidation enhanced the COD and TOC removal efficiency of the H2O2 (50mM)/UV-C process by a factor of 13 and 4, respectively. In case of the biotreated textile wastewater, the preliminary ozonation step increased COD removal of the H2O2 (10mM)/UV-C treatment system from 15% to 62%, and TOC removal from 0% to 34%, but did not appear to be more effective than applying a single ozonation process in terms of TOC abatement rates. Enhancement of the biodegradability was more pronounced for the biologically pre-treated wastewater with a two fold average increase in the BOD5/COD ratio for the studied chemical oxidation systems.

AB - Advanced chemical oxidation of raw and biologically pretreated wastewater by ozonation, H2O2/UV-C treatment and the successive combination of ozonation and H2O2/UV-C oxidation was investigated. For the raw textile wastewater, the application of successive O3 + H2O2/UV-C oxidation enhanced the COD and TOC removal efficiency of the H2O2 (50mM)/UV-C process by a factor of 13 and 4, respectively. In case of the biotreated textile wastewater, the preliminary ozonation step increased COD removal of the H2O2 (10mM)/UV-C treatment system from 15% to 62%, and TOC removal from 0% to 34%, but did not appear to be more effective than applying a single ozonation process in terms of TOC abatement rates. Enhancement of the biodegradability was more pronounced for the biologically pre-treated wastewater with a two fold average increase in the BOD5/COD ratio for the studied chemical oxidation systems.

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