Role of microbial granules in biological wastewater treatment

Microorganisms are almost always found in naturally occurring aggregates, such as suspended floes, granules and attached biofilms. As compared with biofilms, microbial granules contain similarly high concentrations of biomass and high microbial diversity, but they are dense aggregates without any ca...

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Main Author: Xu, Bin.
Other Authors: Tay, Stephen Tiong Lee
Format: Theses and Dissertations
Language:English
Published: 2008
Subjects:
Online Access:http://hdl.handle.net/10356/12131
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-121312023-03-03T19:20:22Z Role of microbial granules in biological wastewater treatment Xu, Bin. Tay, Stephen Tiong Lee School of Civil and Environmental Engineering DRNTU::Engineering::Environmental engineering::Water treatment Microorganisms are almost always found in naturally occurring aggregates, such as suspended floes, granules and attached biofilms. As compared with biofilms, microbial granules contain similarly high concentrations of biomass and high microbial diversity, but they are dense aggregates without any carriers. Meanwhile they also differ from suspended floes in both physical properties and microbial arrangement. As opposed to floes, granular sludge is better able to cope with high and fluctuating loading rates by uncoupling hydraulic retention time from the sludge retention time. The rapid settling velocities of granules can also result in a reduction in the size of reactors, as well as negate the use of large and costly settling tanks. So far, the anaerobic granulation process has been successfully exploited to treat a variety of industrial wastewaters for over twenty years, and more than 900 anaerobic granular sludge units have been operated worldwide. Master of Science (Environmental Engineering) 2008-09-25T06:38:04Z 2008-09-25T06:38:04Z 2004 2004 Thesis http://hdl.handle.net/10356/12131 en Nanyang Technological University 71 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
Xu, Bin.
Role of microbial granules in biological wastewater treatment
description Microorganisms are almost always found in naturally occurring aggregates, such as suspended floes, granules and attached biofilms. As compared with biofilms, microbial granules contain similarly high concentrations of biomass and high microbial diversity, but they are dense aggregates without any carriers. Meanwhile they also differ from suspended floes in both physical properties and microbial arrangement. As opposed to floes, granular sludge is better able to cope with high and fluctuating loading rates by uncoupling hydraulic retention time from the sludge retention time. The rapid settling velocities of granules can also result in a reduction in the size of reactors, as well as negate the use of large and costly settling tanks. So far, the anaerobic granulation process has been successfully exploited to treat a variety of industrial wastewaters for over twenty years, and more than 900 anaerobic granular sludge units have been operated worldwide.
author2 Tay, Stephen Tiong Lee
author_facet Tay, Stephen Tiong Lee
Xu, Bin.
format Theses and Dissertations
author Xu, Bin.
author_sort Xu, Bin.
title Role of microbial granules in biological wastewater treatment
title_short Role of microbial granules in biological wastewater treatment
title_full Role of microbial granules in biological wastewater treatment
title_fullStr Role of microbial granules in biological wastewater treatment
title_full_unstemmed Role of microbial granules in biological wastewater treatment
title_sort role of microbial granules in biological wastewater treatment
publishDate 2008
url http://hdl.handle.net/10356/12131
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