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Utilising laboratory experiments as a first step to introduce primary sludge hydrolysis in full-scale.

Jönsson, Karin LU ; Pottier, A; Dimitrova, I and Nyberg, U (2008) In Water Science and Technology 57(9). p.1397-1403
Abstract
Laboratory experiments have been utilised as a tool to determine the possible yield of soluble COD and VFAs from settled influent and preprecipitated sludge at Klagshamn wastewater treatment plant and to determine the degradability of the organic matter. The release of ammonium and orthophosphate from the hydrolysed sludge has been estimated. It is possible to produce soluble organic matter of good quality from settled influent and preprecipitated sludge at Klagshamn WWTP. Denitrification rates of 3.1 mg NO(3)-N/(g VSS x h) were found for the hydrolysate in laboratory tests. Owing to the low phosphate concentrations in the hydrolysate from preprecipitated sludge, it shows a potential for postdenitrification despite stringent phosphorus... (More)
Laboratory experiments have been utilised as a tool to determine the possible yield of soluble COD and VFAs from settled influent and preprecipitated sludge at Klagshamn wastewater treatment plant and to determine the degradability of the organic matter. The release of ammonium and orthophosphate from the hydrolysed sludge has been estimated. It is possible to produce soluble organic matter of good quality from settled influent and preprecipitated sludge at Klagshamn WWTP. Denitrification rates of 3.1 mg NO(3)-N/(g VSS x h) were found for the hydrolysate in laboratory tests. Owing to the low phosphate concentrations in the hydrolysate from preprecipitated sludge, it shows a potential for postdenitrification despite stringent phosphorus outlet demands. Calculations based on data gained from the laboratory experiments show that about 50% of the external carbon source used today can be saved with minor changes in the plant operation except that the hydrolysis has to be established. Based on these findings, full-scale experiments with internal hydrolysis in the primary clarifiers were scheduled in one of the two lines at Klagshamn WWTP for the summer of 2007. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Water Science and Technology
volume
57
issue
9
pages
1397 - 1403
publisher
IWA Publishing
external identifiers
  • wos:000256153100014
  • pmid:18496005
  • scopus:45549091495
ISSN
0273-1223
DOI
10.2166/wst.2008.227
language
English
LU publication?
yes
id
629e8298-72de-4c61-bb14-bcc4ed573b90 (old id 1153859)
date added to LUP
2008-10-08 12:46:01
date last changed
2017-01-01 06:09:49
@article{629e8298-72de-4c61-bb14-bcc4ed573b90,
  abstract     = {Laboratory experiments have been utilised as a tool to determine the possible yield of soluble COD and VFAs from settled influent and preprecipitated sludge at Klagshamn wastewater treatment plant and to determine the degradability of the organic matter. The release of ammonium and orthophosphate from the hydrolysed sludge has been estimated. It is possible to produce soluble organic matter of good quality from settled influent and preprecipitated sludge at Klagshamn WWTP. Denitrification rates of 3.1 mg NO(3)-N/(g VSS x h) were found for the hydrolysate in laboratory tests. Owing to the low phosphate concentrations in the hydrolysate from preprecipitated sludge, it shows a potential for postdenitrification despite stringent phosphorus outlet demands. Calculations based on data gained from the laboratory experiments show that about 50% of the external carbon source used today can be saved with minor changes in the plant operation except that the hydrolysis has to be established. Based on these findings, full-scale experiments with internal hydrolysis in the primary clarifiers were scheduled in one of the two lines at Klagshamn WWTP for the summer of 2007.},
  author       = {Jönsson, Karin and Pottier, A and Dimitrova, I and Nyberg, U},
  issn         = {0273-1223},
  language     = {eng},
  number       = {9},
  pages        = {1397--1403},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {Utilising laboratory experiments as a first step to introduce primary sludge hydrolysis in full-scale.},
  url          = {http://dx.doi.org/10.2166/wst.2008.227},
  volume       = {57},
  year         = {2008},
}