Evaluation of an integrated anaerobic/aerobic SBR system for the treatment of wool dyeing effluents: Purification of wool dyeing effluent in a SBR

被引：23

作者：

Gonçalves I.C. ^{[1
]}

Penha S. ^{[1
]}

Matos M. ^{[1
]}

Santos A.R. ^{[1
]}

Franco F. ^{[1
]}

Pinheiro H.M. ^{[2
]}

机构：

[1] Department of Chemistry, University of Beira Interior, 6200 Covilhã, R. Marquês D'Avila e Bolama

[2] Ctr. of Biol. and Chem. Engineering, Instituto Superior Técnico, 1049-001 Lisbon, Av. Rovisco Pais

来源：

Biodegradation | 2005年 / 16卷 / 01期

关键词：

Aerobic; Anaerobic; Azo and anthraquinone dyes; SBR; Wool dyeing effluent;

D O I：

10.1007/s10531-004-0431-7

中图分类号：

学科分类号：

摘要：

This work examined the performance of a sequencing batch reactor treating dyeing effluents from a factory that processes mainly wool and wool/polyester blends. Different operational conditions were evaluated, namely the influence of the anaerobic and the subsequent aerobic phase on the organic load removal, as well as the effect of the length of the aeration period (from 8 to 12 h) on process efficiency. A comparison between a fill stage in fast and slow modes was carried out. Results indicate that the cycle 2 conditions (fast fill and 12 h aeration time) improved the overall efficiency (85 ± 6% soluble COD and 95 ± 4% BOD5 removal yields) with a predominant COD uptake occurring in the aerobic stage. Slow, linear COD removal was observed in the anaerobic phase, in contrast with an exponential COD decrease in the oxic phase. For SS a level under 100 mg/l was general achieved in the exit of the reactor. With respect to dye degradation, a noticeable decrease of the absorbance measured in the UV-visible range was observed. This could be explained by the reduction of the azo bonds of some of the present dyes in the anaerobic step, in which ORP values lower than -400 mV were attained. Some oxidation of anthraquinone sulphonate dyes and of the aromatic amines resulting from azo bond cleavage could also have been taken place, as well as bioelimination mechanisms such as dye sorption. © Springer 2005.

引用

页码：81 / 89

页数：8

共 25 条

[1]

Standard Methods for the Examination of Water and Wastewater, 19th Edn., (1992)

[2]

Beckert M., Ohmann U., Platzer B., Long-time experience for wastewater treatment according to the SBR-process, Melliand English, 1-2, (2000)

[3]

Brown D., Hamburger B., The degradation of dyestuffs: Part III - Investigation of them ultimate degradability, Chemosphere, 16, 7, pp. 1539-1553, (1987)

[4]

Brown D., Laboureur P., The aerobic biodegradability of primary aromatic amines, Chemosphere, 12, 3, pp. 405-414, (1983)

[5]

Brown D., Laboureur P., The degradation of dyestuffs: Part I - Primary biodegradation under anaerobic conditions, Chemosphere, 12, 3, pp. 397-404, (1983)

[6]

Easton J.R., The dye maker's view, Colour in Dyehouse Effluent, (1995)

[7]

Integrated Pollution Prevention and Control (IPPC), Reference Document on Best Available Techniques for the Textiles Industry, (2002)

[8]

Hemmi M., Krull R., Hempel D.C., Sequencing batch reactor technology for the purification of concentrated dyehouse liquors, Can. J. Chem. Eng., 77, pp. 948-954, (1999)

[9]

Herzbrun P.A., Irvine R.L., Malinowski K.C., Biological treatment of hazardous wastes in the SBR, J. Water Pollut. Control Federation, 57, pp. 1163-1167, (1985)

[10]

Irvine R.L., Wilderer P.A., Flemming H.C., Controlled unsteady state processes and technologies - An overview, Water Sci. Technol., 35, 1, pp. 1-10, (1997)

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