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The influence of calcium on granular sludge in a full-scale UASB treating paper mill wastewater

Saunders, A; Batstone, Damien LU ; Landelli, J; Webb, RI; Blackall, LL and Keller, J (2002) In Water Science and Technology 45(10). p.187-193
Abstract
Calcium precipitation can have a number of effects on the performance of high-rate anaerobic performance including cementing of the sludge bed, limiting diffusion, and diluting the active biomass. The aim of this study was to observe the influence of precipitation in a stable full-scale system fed with high-calcium paper factory wastewater. Granules were examined from an upflow anaerobic sludge blanket reactor (volume 1,805 m(3)) at a recycled paper mill with a loading rate of 5.7-6.6 kgCOD.m(-3).d(-1) and influent calcium concentration of 400-700 gCa(.)m(-3). The granules were relatively small (1 mm), with a 200-400 mum core of calcium precipitate as observed with energy dispersive X-ray spectroscopy. Compared to other granules,... (More)
Calcium precipitation can have a number of effects on the performance of high-rate anaerobic performance including cementing of the sludge bed, limiting diffusion, and diluting the active biomass. The aim of this study was to observe the influence of precipitation in a stable full-scale system fed with high-calcium paper factory wastewater. Granules were examined from an upflow anaerobic sludge blanket reactor (volume 1,805 m(3)) at a recycled paper mill with a loading rate of 5.7-6.6 kgCOD.m(-3).d(-1) and influent calcium concentration of 400-700 gCa(.)m(-3). The granules were relatively small (1 mm), with a 200-400 mum core of calcium precipitate as observed with energy dispersive X-ray spectroscopy. Compared to other granules, Methanomicrobiales not Methanobacteriales were the dominant hydrogen or formate utilisers, and putative acidogens were filamentous. The strength of the paper mill fed granules was very high when compared to granules from other full-scale reactors, and a partial linear correlation between granule strength and calcium concentration was identified. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
granule, microbial ecology, treatment, UASB, high-rate anaerobic, FISH, calcium carbonate precipitation
in
Water Science and Technology
volume
45
issue
10
pages
187 - 193
publisher
IWA Publishing
external identifiers
  • pmid:12188542
  • wos:000177331900030
  • scopus:0036045196
ISSN
0273-1223
language
English
LU publication?
yes
id
745bf828-876c-4b08-8b49-acb2caf25f0e (old id 909746)
date added to LUP
2008-01-16 16:53:28
date last changed
2017-12-10 04:32:16
@article{745bf828-876c-4b08-8b49-acb2caf25f0e,
  abstract     = {Calcium precipitation can have a number of effects on the performance of high-rate anaerobic performance including cementing of the sludge bed, limiting diffusion, and diluting the active biomass. The aim of this study was to observe the influence of precipitation in a stable full-scale system fed with high-calcium paper factory wastewater. Granules were examined from an upflow anaerobic sludge blanket reactor (volume 1,805 m(3)) at a recycled paper mill with a loading rate of 5.7-6.6 kgCOD.m(-3).d(-1) and influent calcium concentration of 400-700 gCa(.)m(-3). The granules were relatively small (1 mm), with a 200-400 mum core of calcium precipitate as observed with energy dispersive X-ray spectroscopy. Compared to other granules, Methanomicrobiales not Methanobacteriales were the dominant hydrogen or formate utilisers, and putative acidogens were filamentous. The strength of the paper mill fed granules was very high when compared to granules from other full-scale reactors, and a partial linear correlation between granule strength and calcium concentration was identified.},
  author       = {Saunders, A and Batstone, Damien and Landelli, J and Webb, RI and Blackall, LL and Keller, J},
  issn         = {0273-1223},
  keyword      = {granule,microbial ecology,treatment,UASB,high-rate anaerobic,FISH,calcium carbonate precipitation},
  language     = {eng},
  number       = {10},
  pages        = {187--193},
  publisher    = {IWA Publishing},
  series       = {Water Science and Technology},
  title        = {The influence of calcium on granular sludge in a full-scale UASB treating paper mill wastewater},
  volume       = {45},
  year         = {2002},
}