Achieving Efficient and Stable Deammonification at Low Temperatures—Experimental and Modeling Studies - Publication - Bridge of Knowledge

Search

Achieving Efficient and Stable Deammonification at Low Temperatures—Experimental and Modeling Studies

Abstract

The short-term effects of temperature on deammonification sludge were evaluated in a laboratory-scale sequencing batch reactor (SBR). Mathematical modeling was used for further evaluations of different intermittent aeration strategies for achieving high and stable deammonification performance at decreasing temperatures. As for the biomass cultivated at high temperatures (e.g., 30 C), a higher temperature dependency (the adjusted Arrhenius coefficient for 11–17 C = 1.71 vs. for 17–30 C = 1.12) on the specific anammox growth rates was found at lower temperatures (11–17 C) in comparison with higher temperatures (17–30 C). Further evaluations of recovering the nitrogen removal efficiency at decreasing temperatures with the mathematical model by modifying the intermittent aeration strategies (aeration frequency (F) and the ratio (R) between non-aerated (non-aer) phase and aerated (aer) phase durations) indicated that intermittent aeration with a prolonged non-aerated phase (e.g., R 4 regardless of F value) would help to maintain high and stable deammonification performance (~80%) at decreasing temperatures (14–22 C). Extending the non-aerated phases (increasing R) and reducing the frequency (F) of off/on phase changes have a positive effect on increasing energy savings, leading to increasing interest in this method.

Citations

  • 1 6

    CrossRef

  • 0

    Web of Science

  • 1 6

    Scopus

Cite as

Full text

download paper
downloaded 42 times
Publication version
Accepted or Published Version
License
Creative Commons: CC-BY open in new tab

Keywords

Details

Category:
Articles
Type:
artykuły w czasopismach
Published in:
ENERGIES no. 14,
ISSN: 1996-1073
Language:
English
Publication year:
2021
Bibliographic description:
Al-Hazmi H., Lu X., Grubba D., Majtacz J., Kowal P., Mąkinia J.: Achieving Efficient and Stable Deammonification at Low Temperatures—Experimental and Modeling Studies// ENERGIES -Vol. 14,iss. 13 (2021), s.3961-
DOI:
Digital Object Identifier (open in new tab) 10.3390/en14133961
Verified by:
Gdańsk University of Technology

seen 116 times

Recommended for you

Meta Tags