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Effect of sequencing batch cycle strategy on the treatment of a simulated textile wastewater with aerobic granular sludge

Paper ID Volume ID Publish Year Pages File Format Full-Text
2795 135 2015 9 PDF Available
Title
Effect of sequencing batch cycle strategy on the treatment of a simulated textile wastewater with aerobic granular sludge
Abstract

Aerobic granular sludge was successfully developed on a simulated textile effluent with an added azo dye, on a non-tubular sequential batch reactor (SBR), with better granulation results than in a dye-free control SBR fed with the same base medium. The overall performance of the treatment was very good, with high color and chemical oxygen demand (COD) removal yields (up to 85% and 80%, respectively). Operation under two sequencing batch cycle strategies, i.e., with a single anaerobic/aerobic reaction phase or under intermittent aeration, showed that the latter generally improved the treatment performance. Under intermittent aeration, biomass accumulation was induced, with faster settling aggregates, leading to a higher COD removal yield. Although a lower decolorization rate was observed in the first 30 min of anaerobic reaction, as compared to the single phase strategy, the overall color removal remained high. This work demonstrates the applicability of the new aerobic granular sludge technology for the treatment of textile effluents.

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Keywords
2A1N4S, 2-amino-1-naphthol-4-sulphonate; 4A1NS, 4-amino-1-naphthalene sulphonate; AR14, azo dye acid red 14; COD, chemical oxygen demand; EAg/AgCl, oxidation–reduction potential value against the silver/silver chloride standard; H/D, height-to-diameter ra
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Effect of sequencing batch cycle strategy on the treatment of a simulated textile wastewater with aerobic granular sludge
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 104, 15 December 2015, Pages 106–114
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering