LAPSE:2023.13819
Published Article
LAPSE:2023.13819
Combining Shift to Biogas Production in a Large WWTP in China with Optimisation of Nitrogen Removal
March 1, 2023
Despite the huge current challenges in sewage sludge treatment and disposal in China, anaerobic sludge stabilisation (AnSS) is still not a state-of-the-art process in WWTP in the country. However, the potential benefits of anaerobic sludge stabilisation may outweigh the drawbacks. One of these drawbacks is the backload from the sludge liquor that increases the nutrient load in the biological treatment stage. This work shows via computer modelling that not only can the sludge production and disposal costs be significantly reduced, but also that, with sensible automation and operational strategies (e.g., bypass of primary clarifiers, use of a centrate dosing strategy, incorporation of ammonium nitrogen sensors, etc.), the effects of the backload can be counteracted for nitrogen removal, even considering that wastewater in China often has an unfavourable C/N ratio for nitrogen removal. The tested strategies would even improve the overall plant performance in terms of norm compliance, sludge production, energy use, and energy production
Keywords
anaerobic digestion, biogas, Energy Efficiency, ICA-strategies, nitrogen removal, sludge treatment, WWTP modelling
Suggested Citation
Vergara-Araya M, Hilgenfeldt V, Steinmetz H, Wiese J. Combining Shift to Biogas Production in a Large WWTP in China with Optimisation of Nitrogen Removal. (2023). LAPSE:2023.13819
Author Affiliations
Vergara-Araya M: Department for Water, Environment, Construction, and Safety, Magdeburg-Stendal University of Applied Sciences, 39114 Magdeburg, Germany [ORCID]
Hilgenfeldt V: Institute Water Infrastructure Resources, University of Kaiserslautern (TUK), 67663 Kaiserslautern, Germany [ORCID]
Steinmetz H: Institute Water Infrastructure Resources, University of Kaiserslautern (TUK), 67663 Kaiserslautern, Germany [ORCID]
Wiese J: Department for Water, Environment, Construction, and Safety, Magdeburg-Stendal University of Applied Sciences, 39114 Magdeburg, Germany
Journal Name
Energies
Volume
15
Issue
8
First Page
2710
Year
2022
Publication Date
2022-04-07
Published Version
ISSN
1996-1073
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PII: en15082710, Publication Type: Journal Article
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LAPSE:2023.13819
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doi:10.3390/en15082710
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Mar 1, 2023
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Mar 1, 2023
 
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