Change of Genotoxicity of Simulated Textile dyeing Wastewater During Anoxic-Aerobic Treatment

DOI

10.2991/itms-15.2015.236How to use a DOI?

Keywords

Simulated Textile Dyeing Waster; Genotoxicity; Anoxic-aerobic Treatment; Dissolved Organic Matters

Abstract

The pollution of textile dyeing wastewater is of highly concern for its notorious biotoxicity, especially the genotoxicity, which can cause DNA damage and chromosome aberration to aquatic flora and fauna. In this study, a lab-scale reactor system was constructed to study the change of genotoxicity during the anoxic-aerobic treatment of simulated textile dyeing wastewater. The genotoxicity of wastewater samples were evaluated by SOS/umu test. The results revealed that the genotoxicity significantly increased by anoxic treatment, and could not be completely eliminated after aerobic treatment. By fractionating dissolved organic matters (DOM) in wastewater into different fractions, it was found that hydrophobic acids (HOA) and the hydrophobic neutrals (HON) were the key fraction with genotoxic activity. By comparing the genotoxic equivalent of the samples and their corresponding dissolved organic carbon (DOC) value, it was found that the aerobic effluent had higher genotoxic intensity than original influent based on DOC.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - H. Jiang
AU  - X.H. Xie
AU  - N. Liu
AU  - F. Yang
AU  - L.Y. Zhu
AU  - J.S Liu
PY  - 2015/11
DA  - 2015/11
TI  - Change of Genotoxicity of Simulated Textile dyeing Wastewater During Anoxic-Aerobic Treatment
BT  - Proceedings of the 2015 International Conference on Industrial Technology and Management Science
PB  - Atlantis Press
SP  - 977
EP  - 980
SN  - 2352-538X
UR  - https://doi.org/10.2991/itms-15.2015.236
DO  - 10.2991/itms-15.2015.236
ID  - Jiang2015/11
ER  -