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UBC Theses and Dissertations
Brewery wastewater treatment using aerobic sequencing batch reactors with mixed culture activated sludge Ling, Luqiong
Abstract
Laboratory-scale aerobic sequencing batch reactors, in both suspended-growth and attached-growth modes, were used to study the treatment of brewery wastewater. A Ringlaces material was selected and employed for the attached-growth reactors. Experiments were conducted employing a wide range of hydraulic retention times, from 0.56 to 6.06 days. The experimental results demonstrated that brewery wastewater could be successfully treated using both suspended-growth and attached-growth aerobic sequencing batch reactors. Treatment efficiencies in terms of the removals of total organic carbon (TOC), the five days biological demand (BOD5), chemical oxygen demand (COD), and suspended solids (SS) were consistently maintained over 90%, with the suspended-growth reactors performing significantly better than the attached-growth reactors. As the results of these experiments demonstrated that the performance of suspended-growth SBRs was superior to that of attached-growth SBRs, only the suspended-growth SBR system was selected to study the optimal conditions of HRT and loading rate. The results showed that the maximum removal of TOC and SS could be reached at the optimal of HRT and loading rate. The removal of TOC was more sensitive to variations in the HRT than to variations in the loading rate; however, the effect of loading rate was dominant in the removal of SS compared to the effect of the HRT. The pH remained relatively constant during the aeration stage. The dissolved oxygen concentration changed as aeration proceeded. This may be related to TOC degradation and microbial activity. A lower sludge production rate was observed in the aerobic suspended-growth SBRs. [Scientific formulae used in this abstract could not be reproduced.]
Item Metadata
Title |
Brewery wastewater treatment using aerobic sequencing batch reactors with mixed culture activated sludge
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1998
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Description |
Laboratory-scale aerobic sequencing batch reactors, in both suspended-growth and
attached-growth modes, were used to study the treatment of brewery wastewater. A
Ringlaces material was selected and employed for the attached-growth reactors.
Experiments were conducted employing a wide range of hydraulic retention times, from
0.56 to 6.06 days. The experimental results demonstrated that brewery wastewater could
be successfully treated using both suspended-growth and attached-growth aerobic
sequencing batch reactors. Treatment efficiencies in terms of the removals of total
organic carbon (TOC), the five days biological demand (BOD5), chemical oxygen
demand (COD), and suspended solids (SS) were consistently maintained over 90%, with
the suspended-growth reactors performing significantly better than the attached-growth
reactors.
As the results of these experiments demonstrated that the performance of
suspended-growth SBRs was superior to that of attached-growth SBRs, only the
suspended-growth SBR system was selected to study the optimal conditions of HRT and
loading rate. The results showed that the maximum removal of TOC and SS could be
reached at the optimal of HRT and loading rate. The removal of TOC was more
sensitive to variations in the HRT than to variations in the loading rate; however, the
effect of loading rate was dominant in the removal of SS compared to the effect of the
HRT.
The pH remained relatively constant during the aeration stage. The dissolved
oxygen concentration changed as aeration proceeded. This may be related to TOC
degradation and microbial activity. A lower sludge production rate was observed in the
aerobic suspended-growth SBRs. [Scientific formulae used in this abstract could not be reproduced.]
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Extent |
5859731 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-06-11
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0058977
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1999-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.