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Granule development and performance in sucrose fed anaerobic baffled reactors

Paper ID Volume ID Publish Year Pages File Format Full-Text
25801 43602 2006 11 PDF Available
Title
Granule development and performance in sucrose fed anaerobic baffled reactors
Abstract

Two 90 L anaerobic baffled reactors were used to study the granulation of sludge and the effect of the organic loading rate and NaHCO3/COD ratios on reactor performance. Furthermore, it was determined whether an anaerobic baffled reactor would promote phase separation and if additive of bentonite or granular active carbon was capable of enhancing granule formation. In order to minimize feed variations, and have a totally biodegradable substrate, a synthetic sucrose substrate was used. Granulation was achieved in both reactors within 75 days. However, the granules from the granular active carbon amended reactor appeared earlier and were larger and more compact. The reactors were maintained at a hydraulic retention time of 20 h during performance study stage. The results showed that when organic loading rate were changed from 2.15 to 6.29 kg COD m−3 day−1, chemical oxygen demand (COD) removal was not decreased (91–93%), but a slight increase in effluent COD was observed. It was found that the COD removals were generally good (87–92%) and had not obviously change with the decreasing NaHCO3/COD ratios. From the bacterial distribution and the concentration of volatile fatty acids in four compartments, it was concluded that a separation of phases occurred within the anaerobic baffled reactors.

Keywords
Anaerobic baffled reactor; Granulation of sludge; Performance; Organic loading rate; NaHCO3/COD ratios
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 122, Issue 2, 23 March 2006, Pages 198–208
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us