Simultaneous Nitrification, Denitrification, and Phosphorus Removal From Nutrient-Rich Industrial Wastewater Using Granular Sludge

Gulsum, Yilmaz, Lemaire, Romain, Keller, Jurg and Yuan, Zhiguo (2008) Simultaneous Nitrification, Denitrification, and Phosphorus Removal From Nutrient-Rich Industrial Wastewater Using Granular Sludge. Biotechnology & Bioengineering, 100 3: 529-541. doi:10.1002/bit.21774


Author Gulsum, Yilmaz
Lemaire, Romain
Keller, Jurg
Yuan, Zhiguo
Title Simultaneous Nitrification, Denitrification, and Phosphorus Removal From Nutrient-Rich Industrial Wastewater Using Granular Sludge
Journal name Biotechnology & Bioengineering   Check publisher's open access policy
ISSN 0006-3592
Publication date 2008-06-15
Year available 2007
Sub-type Article (original research)
DOI 10.1002/bit.21774
Open Access Status Not yet assessed
Volume 100
Issue 3
Start page 529
End page 541
Total pages 13
Place of publication New York
Publisher Wiley Interscience
Language eng
Subject C1
9699 Other Environment
090409 Wastewater Treatment Processes
Abstract The biological removal of nitrogen and phosphorus from nutrient-rich abattoir wastewater using granular sludge has been investigated. A lab-scale sequencing batch reactor, seeded with granular sludge developed using synthetic wastewater, was operated for 13 months under alternating anaerobic and aerobic conditions. It is demonstrated that the granules could be sustained and indeed further developed with the use of abattoir wastewater. The organic, nitrogen, and phosphorus loading rates applied were 2.7 gCOD L-1 day-1, 0.43 gN L-1 day-1, and 0.06 gP L-1 day-1, respectively. The removal efficiency of soluble COD, soluble nitrogen and soluble phosphorus were 85%, 93%, and 89%, respectively. However, the high suspended solids in the effluent limited the overall removal efficiency to 68%, 86%, and 74% for total COD, TN, and TP, respectively. This good nutrient removal was achieved through the process known as simultaneous nitrification, denitrification, and phosphorus removal, likely facilitated by the presence of large anoxic zones in the center of the granules. The removal of nitrogen was likely via nitrite optimizing the use of the limited COD available in the wastewater. Accumulibacter spp. were found to be responsible for most of the denitrification, further reducing the COD requirement for nitrogen and phosphorus removal. Mineral precipitation was evaluated and was not found to significantly contribute to the overall nutrient removal. It is also shown that the minimum HRT in a granular sludge system is not governed by the sludge settleability, as is the case with floccular sludge systems, but likely by the limitations associated with the transfer of substrates in granules. Biotechnol. Bioeng. 2008;100: 529-541. © 2007 Wiley Periodicals, Inc.
Keyword abattoir wastewater
BNR
HRT
SBR
slaughterhouse
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Published Online: 20 Dec 2007

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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Created: Thu, 26 Mar 2009, 21:03:59 EST by Suzanne Read on behalf of Advanced Water Management Centre