Operation for nitritation of sludge liquor in a full-scale SBR.
(2008) In Water Science and Technology 58(2). p.439-444- Abstract
- At Sjölunda WWTP, a full-scale SBR for treatment of mesophilic sludge digester liquor has been operated almost a year with stable nitrite accumulation. Only nitritation of the sludge liquor is needed since the oxidized ammonium is denitrified in the first anoxic zone of the high-loaded activated sludge in the main plant. The process strategy was to have an ammonium set-point to end the aeration, a low DO concentration and a low pH set-point. An increase of pH set-point from 6.8 to 7.2 increased loss of alkalinity in the effluent and increased sodium hydroxide dosing. An increase of DO set-point from 1.1 mg O(2) L(-1) to 1.3 mg O(2) L(-1) markedly increased ammonia reduction rates and only slightly increased nitrate production. Today, an... (More)
- At Sjölunda WWTP, a full-scale SBR for treatment of mesophilic sludge digester liquor has been operated almost a year with stable nitrite accumulation. Only nitritation of the sludge liquor is needed since the oxidized ammonium is denitrified in the first anoxic zone of the high-loaded activated sludge in the main plant. The process strategy was to have an ammonium set-point to end the aeration, a low DO concentration and a low pH set-point. An increase of pH set-point from 6.8 to 7.2 increased loss of alkalinity in the effluent and increased sodium hydroxide dosing. An increase of DO set-point from 1.1 mg O(2) L(-1) to 1.3 mg O(2) L(-1) markedly increased ammonia reduction rates and only slightly increased nitrate production. Today, an introduction of denitritation in the SBR will be a more cost-effective treatment of sludge liquor at Sjölunda WWTP. However, the choice of operation with only nitritation or nitritation/denitritation in sludge liquor treatment should always include a consideration of chemical costs and treatment capacity of both main plant and side-stream plant. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1223237
- author
- Gustavsson, D J I ; Nyberg, U and la Cour Jansen, Jes LU
- organization
- publishing date
- 2008
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- nitrite accumulation, sludge liquor, nitritation, full-scale
- in
- Water Science and Technology
- volume
- 58
- issue
- 2
- pages
- 439 - 444
- publisher
- IWA Publishing
- external identifiers
-
- wos:000258485600025
- pmid:18701798
- scopus:52949142387
- pmid:18701798
- ISSN
- 0273-1223
- DOI
- 10.2166/wst.2008.402
- language
- English
- LU publication?
- yes
- id
- 0205dda4-19fd-48f8-9235-1ba9a5560486 (old id 1223237)
- date added to LUP
- 2016-04-01 13:07:55
- date last changed
- 2022-01-27 17:28:48
@article{0205dda4-19fd-48f8-9235-1ba9a5560486,
abstract = {{At Sjölunda WWTP, a full-scale SBR for treatment of mesophilic sludge digester liquor has been operated almost a year with stable nitrite accumulation. Only nitritation of the sludge liquor is needed since the oxidized ammonium is denitrified in the first anoxic zone of the high-loaded activated sludge in the main plant. The process strategy was to have an ammonium set-point to end the aeration, a low DO concentration and a low pH set-point. An increase of pH set-point from 6.8 to 7.2 increased loss of alkalinity in the effluent and increased sodium hydroxide dosing. An increase of DO set-point from 1.1 mg O(2) L(-1) to 1.3 mg O(2) L(-1) markedly increased ammonia reduction rates and only slightly increased nitrate production. Today, an introduction of denitritation in the SBR will be a more cost-effective treatment of sludge liquor at Sjölunda WWTP. However, the choice of operation with only nitritation or nitritation/denitritation in sludge liquor treatment should always include a consideration of chemical costs and treatment capacity of both main plant and side-stream plant.}},
author = {{Gustavsson, D J I and Nyberg, U and la Cour Jansen, Jes}},
issn = {{0273-1223}},
keywords = {{nitrite accumulation; sludge liquor; nitritation; full-scale}},
language = {{eng}},
number = {{2}},
pages = {{439--444}},
publisher = {{IWA Publishing}},
series = {{Water Science and Technology}},
title = {{Operation for nitritation of sludge liquor in a full-scale SBR.}},
url = {{http://dx.doi.org/10.2166/wst.2008.402}},
doi = {{10.2166/wst.2008.402}},
volume = {{58}},
year = {{2008}},
}