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Impact on gas potential of primary sludge hydrolysis for internal carbon source production

Jönsson, Karin LU ; Hey, Tobias LU orcid ; Norlander, Helena and Nyberg, Ulf (2009) 2nd IWA Specialized Conference Nutrient Management In Wastewater Treatment Processes p.459-466
Abstract
Abstract in Undetermined
To operate biological nutrient removal processes efficiently, access to easily degradablecarbon is crucial. Internal production of good-quality carbon via hydrolysis of primary sludge has been proven to be a cost-effective way of securing the supply. This study confirms that a highquality
carbon source can be produced by biological hydrolysis of preprecipitated primary sludge from Klagshamn wastewater treatment plant (WWTP). The possible yields of VFAs and soluble COD were determined and compared to a corresponding study performed one year earlier, also at Klagshamn WWTP. Considering the whole carbon and energy balance of a WWTP, the overall
profit of sludge hydrolysis has however been questioned,... (More)
Abstract in Undetermined
To operate biological nutrient removal processes efficiently, access to easily degradablecarbon is crucial. Internal production of good-quality carbon via hydrolysis of primary sludge has been proven to be a cost-effective way of securing the supply. This study confirms that a highquality
carbon source can be produced by biological hydrolysis of preprecipitated primary sludge from Klagshamn wastewater treatment plant (WWTP). The possible yields of VFAs and soluble COD were determined and compared to a corresponding study performed one year earlier, also at Klagshamn WWTP. Considering the whole carbon and energy balance of a WWTP, the overall
profit of sludge hydrolysis has however been questioned, especially where sludge is utilised for anaerobic digestion and methane production. In this study it was shown in laboratory experiments that primary sludge hydrolysis and withdrawal of the solubilised carbon source did not result in
significantly lower methane production when the remaining sludge was digested compared to when the primary sludge was digested in its original condition. These results clearly contradict the common conception of that sludge hydrolysis for production of carbon source to facilitate nutrient
removal must lead to decreased gas production in the anaerobic digestion at WWTPs. (Less)
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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Gas potential, hydrolysis, internal carbon source, methane, preprecipitated primary sludge, VFA
host publication
[Host publication title missing]
pages
8 pages
publisher
Lemtech
conference name
2nd IWA Specialized Conference Nutrient Management In Wastewater Treatment Processes
conference location
Krakow, Poland
conference dates
2009-09-06
ISBN
9781843395775
language
English
LU publication?
yes
id
3b26a931-d7e7-4a79-a8be-78a5513cf8b4 (old id 2375577)
date added to LUP
2016-04-04 11:36:29
date last changed
2021-03-22 15:07:46
@inproceedings{3b26a931-d7e7-4a79-a8be-78a5513cf8b4,
  abstract     = {{Abstract in Undetermined<br/>To operate biological nutrient removal processes efficiently, access to easily degradablecarbon is crucial. Internal production of good-quality carbon via hydrolysis of primary sludge has been proven to be a cost-effective way of securing the supply. This study confirms that a highquality<br/>carbon source can be produced by biological hydrolysis of preprecipitated primary sludge from Klagshamn wastewater treatment plant (WWTP). The possible yields of VFAs and soluble COD were determined and compared to a corresponding study performed one year earlier, also at Klagshamn WWTP. Considering the whole carbon and energy balance of a WWTP, the overall<br/>profit of sludge hydrolysis has however been questioned, especially where sludge is utilised for anaerobic digestion and methane production. In this study it was shown in laboratory experiments that primary sludge hydrolysis and withdrawal of the solubilised carbon source did not result in<br/>significantly lower methane production when the remaining sludge was digested compared to when the primary sludge was digested in its original condition. These results clearly contradict the common conception of that sludge hydrolysis for production of carbon source to facilitate nutrient<br/>removal must lead to decreased gas production in the anaerobic digestion at WWTPs.}},
  author       = {{Jönsson, Karin and Hey, Tobias and Norlander, Helena and Nyberg, Ulf}},
  booktitle    = {{[Host publication title missing]}},
  isbn         = {{9781843395775}},
  keywords     = {{Gas potential; hydrolysis; internal carbon source; methane; preprecipitated primary sludge; VFA}},
  language     = {{eng}},
  pages        = {{459--466}},
  publisher    = {{Lemtech}},
  title        = {{Impact on gas potential of primary sludge hydrolysis for internal carbon source production}},
  year         = {{2009}},
}