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Combined anaerobic–ozonation process for treatment of textile wastewater: Removal of acute toxicity and mutagenicity
Lunds universitet.
Lunds universitet.
Lunds universitet.
Kristianstad University, School of Education and Environment, Avdelningen för Naturvetenskap.
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2015 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 292, no 15 July, 52-60 p.Article in journal (Refereed) Published
Abstract [en]

A novel set up composed of an anaerobic biofilm reactor followed by ozonation was used for treatment of artificial and real textile effluents containing azo dyes. The biological treatment efficiently removed chemical oxygen demand and color. Ozonation further reduced the organic content of the effluents and was very important for the degradation of aromatic compounds, as shown by the reduction of UV absorbance. The acute toxicity toward Vibrio fischeri and the shrimp Artemia salina increased after the biological treatment. No toxicity was detected after ozonation with the exception of the synthetic effluent containing the highest concentration, 1 g/l, of the azo dye Remazol Red. Both untreated and biologically treated textile effluents were found to have mutagenic effects. The mutagenicity increased even further after 1 min of ozonation. No mutagenicity was however detected in the effluents subjected to longer exposure to ozone.

The results of this study suggest that the use of ozonation as short post-treatment after a biological process can be beneficial for the degradation of recalcitrant compounds and the removal of toxicity of textile wastewater. However, monitoring of toxicity and especially mutagenicity is crucial and should always be used to assess the success of a treatment strategy.

Place, publisher, year, edition, pages
2015. Vol. 292, no 15 July, 52-60 p.
National Category
Environmental Sciences Environmental Engineering
Identifiers
URN: urn:nbn:se:hkr:diva-13724DOI: 10.1016/j.jhazmat.2015.03.018PubMedID: 25781375OAI: oai:DiVA.org:hkr-13724DiVA: diva2:795508
Available from: 2015-03-16 Created: 2015-03-16 Last updated: 2015-03-19Bibliographically approved

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CiteExportLink to record
Permanent link

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Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
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  • text
  • asciidoc
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