Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors

With increasing demands on water quality, advanced and cost-effective techniques for nitrogen removal from wastewater become more and more important. Water industry has very strong demand for development of novel biotechnology for efficient removal of nitrogen from industrial and municipal wastewate...

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Main Author: Yang, Shufang
Other Authors: Tay Joo Hwa
Format: Theses and Dissertations
Language:English
Published: 2008
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Online Access:https://hdl.handle.net/10356/12141
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-121412023-03-03T19:13:21Z Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors Yang, Shufang Tay Joo Hwa School of Civil and Environmental Engineering Liu Yu DRNTU::Engineering::Environmental engineering::Water treatment With increasing demands on water quality, advanced and cost-effective techniques for nitrogen removal from wastewater become more and more important. Water industry has very strong demand for development of novel biotechnology for efficient removal of nitrogen from industrial and municipal wastewaters. This research work attempted to develop aerobic granules for simultaneous organic carbon and nitrogen removal. For this purpose, four sequencing batch reactors (SBR) were operated at different substrate N/COD ratios in the range of 5/100 to 30/100 by weight. Results showed that aerobic granules could be formed over the substrate N/COD ratios of 5/100 to 30/100, i.e. aerobic granulation would be independent of the substrate N/COD ratios applied, However, the substrate N/COD ratio showed a significant effect on microbial and physicochemical characteristics of aerobic granules. It was found that the activity of nitrifying bacteria was enhanced with the increase of substrate N/COD ratio. The cell hydrophobicity was improved significantly, while the production of extracellular polysaccharides showed a decreasing trend as the substrate NKOD ratio was increased. Doctor of Philosophy (CEE) 2008-09-25T06:38:22Z 2008-09-25T06:38:22Z 2005 2005 Thesis Yang, S. F. (2005). Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors. Doctoral thesis, Nanyang Technological University, Singapore. https://hdl.handle.net/10356/12141 10.32657/10356/12141 en Nanyang Technological University 168 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Environmental engineering::Water treatment
spellingShingle DRNTU::Engineering::Environmental engineering::Water treatment
Yang, Shufang
Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
description With increasing demands on water quality, advanced and cost-effective techniques for nitrogen removal from wastewater become more and more important. Water industry has very strong demand for development of novel biotechnology for efficient removal of nitrogen from industrial and municipal wastewaters. This research work attempted to develop aerobic granules for simultaneous organic carbon and nitrogen removal. For this purpose, four sequencing batch reactors (SBR) were operated at different substrate N/COD ratios in the range of 5/100 to 30/100 by weight. Results showed that aerobic granules could be formed over the substrate N/COD ratios of 5/100 to 30/100, i.e. aerobic granulation would be independent of the substrate N/COD ratios applied, However, the substrate N/COD ratio showed a significant effect on microbial and physicochemical characteristics of aerobic granules. It was found that the activity of nitrifying bacteria was enhanced with the increase of substrate N/COD ratio. The cell hydrophobicity was improved significantly, while the production of extracellular polysaccharides showed a decreasing trend as the substrate NKOD ratio was increased.
author2 Tay Joo Hwa
author_facet Tay Joo Hwa
Yang, Shufang
format Theses and Dissertations
author Yang, Shufang
author_sort Yang, Shufang
title Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
title_short Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
title_full Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
title_fullStr Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
title_full_unstemmed Effect of substrate N/COD ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
title_sort effect of substrate n/cod ratio on the formation and characteristics of aerobic granules developed in sequencing batch reactors
publishDate 2008
url https://hdl.handle.net/10356/12141
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