Biotreatment of Azo Dyeing Wastewater Using a Modified Anaerobic-Anoxic-Aerobic Reactor System

Abstract:

Modified anaerobic-anoxic-aerobic (A²O) technology for dye wastewater was studied. The effects of Hydraulic retention times (HRT), sludge retention time (SRT) and carbon source on treatment efficiency were discussed. Scanning electron microscopes (SEM) for different sludge and UV-visible spectrum analysis for influent and effluent were investigated respectively. The results showed that when COD of influent was 600~1200 mg/L and the dye concentration was 20~40 mg/L, HRT had the obvious effect on treatment efficiency of modified A²O system. Total treatment efficiency of the improved system was more than 90% at the optimal HRT (29 h). The dye structure was demonstrated to be changed during the process. Finally, the dye and its intermediates were transformed and mineralized respectively.

• Periodical: Advanced Materials Research (Volumes 183-185)
• Pages: 170-175
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.183-185.170
• Online since: January 2011
• Authors: Gang Chen, Man Hong Huang, Liang Chen, Dong Hui Chen
• Keywords: AZO Dye, Biological Treatment, Decolorization, Modified A²O Process

References

[1] Vandevivere, P.C., Bianchi R, Verstraete, W. Treatment and reuse of wastewater from the textile wet-processing industry: Review of emerging technologies (1998) Chemical Technology and Biotechnology, 72(4), p.289 – 302.

DOI: 10.1002/(sici)1097-4660(199808)72:4<289::aid-jctb905>3.0.co;2-#

[2] Yuan, H.H., Zhong, D.J., Xu. Y.F., Fang, N., Jia, J.P. Rotating Electrochemical Disc: A Novel Device for Treating Dyeing Wastewater Containing Reactive KN-G (2006) Environmental Science & Technology, 29(11), pp.65-66, 76.

[3] Atchariyawut, S., Phattaranawik, J., Leiknes, T. Application of ozonation membrane contacting system for dye wastewater treatment (2009) Separation and Purification Technology, 66(1), pp.153-158.

DOI: 10.1016/j.seppur.2008.11.011

[4] Chung, K.T., Stevens, E., Cerniglia, C.E. The reduction of azo dyes by the intestinal microflora (1992) Critical Review . Microbiology, 18(3), p.175 – 190.

DOI: 10.3109/10408419209114557

[5] Rao, N.N., Bose, G., Khare, P., Kaul, S.N. Fenton and electro-Fenton methods for oxidation of H-acid and Reactive Black 5 (2006) Journal of Environmental Engineering, 132(3), pp.367-376.

DOI: 10.1061/(asce)0733-9372(2006)132:3(367)

[6] Isik, M., Sponza, D.T. Biological treatment of acid dyeing wastewater using a sequential anaerobic/aerobic reactor system (2006) Enzyme and Microbial Technology, 38(7), pp.887-892.

DOI: 10.1016/j.enzmictec.2005.05.018

[7] Dafale, N., Rao N.N., Meshram, S.U., Wate, S,R. Decolorization of azo dyes and simulated dye bath wastewater using acclimatized microbial consortium–Biostimulation and halo tolerance (2008) Bioresource Technology, 99(7), pp.2552-2558.

DOI: 10.1016/j.biortech.2007.04.044

[8] O'Neill, C., Hawkes, F.R., Hawkes, D.L., Esteves, S., Wilcox, S.J. Anaerobic-aerobic biotreatment of simulated textile effluent containing varied ratios of starch and azo dye (2000) Water Research, 34(8), pp.2355-2361.

DOI: 10.1016/s0043-1354(99)00395-4

[9] Frijters, C.T., Vos, R.H., Scheffer, G., Mulder, R. Decolorizing and detoxifying textile wastewater, containing both soluble and insoluble dyes, in a full scale combined anaerobic/aerobic system (2006) Water Research, 40(6), pp.1249-1257.

DOI: 10.1016/j.watres.2006.01.013

[10] Panswad, T., Techovanich, A., Anotai, J. Comparison of dye wastewater treatment by normal and anoxic+anaerobic/aerobic SBR activated sludge processes (2001) Water Science and Technology, 43(2), pp.355-362.

DOI: 10.2166/wst.2001.0111

[11] Seshadri, S., Bishop, P.L., Agha, A.M. Anaerobic/aerobic treatment of selected azo dyes in wastewater (1994) Waste Management, 14(2), pp.127-137.

DOI: 10.1016/0956-053x(94)90005-1

[12] Mohan, S.V., Rao, N.C., Sarma, P.N. Simulated acid azo dye (Acid black 210) wastewater treatment by periodic discontinuous batch mode operation under anoxic-aerobic-anoxic microenvironment conditions (2007).

DOI: 10.1016/j.ecoleng.2007.07.003

[13] Smith, B., O'Neal, G., Boyter, H., et al. Decolorizing textile dye wastewater by anoxic/aerobic treatment (2007) Chemical Technology and Biotechnology, 82(1), pp.16-24.

DOI: 10.1002/jctb.1629

[14] Mohan, S.V., Rao, N.C., Sarma, P.N. Simulated acid azo dye wastewater treatment using suspended growth configured sequencing batch reactor (SBR) under anoxic-aerobic-anoxic microenvironment (2009).

DOI: 10.15666/aeer/0701_025034

[15] Lucas, M.S., Amaral, C., Sampaio, A., Peres, J.A., Dias, A.A. Biodegradation of the diazo dye Reactive Black 5 by a wild isolate of Candida oleophila (2006) Enzyme Microbial Technology, 39(1), pp.51-55.

DOI: 10.1016/j.enzmictec.2005.09.004