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- Feldman, H.Technical University of Denmark (author)
Assessing the effects of intra-granule precipitation in a full-scale industrial anaerobic digester
- Article/chapterEnglish2019
Publisher, publication year, extent ...
- 2019-04-11
- IWA Publishing,2019
- 11 s.
Numbers
- LIBRIS-ID:oai:lup.lub.lu.se:11e967e9-c728-4b3a-bcb8-5b902f625fd2
- https://lup.lub.lu.se/record/11e967e9-c728-4b3a-bcb8-5b902f625fd2URI
- https://doi.org/10.2166/wst.2019.129DOI
Supplementary language notes
- Language:English
- Summary in:English
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- SwePubSwePub
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Notes
- In this paper, a multi-scale model is used to assess the multiple mineral precipitation potential in a full-scale anaerobic granular sludge system. Reactor behaviour is analysed under different operational conditions (addition/no addition of reject water from dewatering of lime-stabilized biomass) and periods of time (short/long term). Model predictions suggest that a higher contribution of reject water promotes the risk of intra-granule CaCO3 formation as a result of the increased quantity of calcium arriving with that stream combined with strong pH gradients within the biofilm. The distribution of these precipitates depends on: (i) reactor height; and (ii) granule size. The study also exposes the potential undesirable effects of the long-term addition of reject water (a decrease in energy recovery of 20% over a 100-day period), caused by loss in biomass activity (due to microbial displacement), and the reduced buffer capacity. This demonstrates how both short-term and long-term operational conditions may affect the formation of precipitates within anaerobic granules, and how it may influence methane production and consequently energy recovery.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Miljöbioteknik Vattenbehandling hsv//swe
- ENGINEERING AND TECHNOLOGY Environmental Biotechnology Water Treatment hsv//eng
- ADM1
- Biofilm
- Industrial wastewater
- Multiple mineral precipitation
- Physico-chemical modelling
- Space competition within granules
Added entries (persons, corporate bodies, meetings, titles ...)
- Flores-Alsina, X.Technical University of Denmark (author)
- Ramin, P.Technical University of Denmark (author)
- Kjellberg, K.Novozymes A/S (author)
- Jeppsson, U.Lund University,Lunds universitet,Industriell elektroteknik och automation,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Industrial Electrical Engineering and Automation,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)iea-uje (author)
- Batstone, D. J.University of Queensland(Swepub:lu)biot-dba (author)
- Gernaey, K. V.Technical University of Denmark(Swepub:lu)extLU-517 (author)
- Technical University of DenmarkNovozymes A/S (creator_code:org_t)
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- In:Water Science and Technology: IWA Publishing79:7, s. 1327-13370273-12231996-9732
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