Abstract
Increased N assimilation by fast growing carbon adsorption heterotrophic organisms (AHOs) was recognized previously as a key explanatory factor leading to higher than expected nitrogen removal in high-rate activated sludge (HRAS) systems. However, the P assimilation stoichiometry and contribution to overall P removal in HRAS of AHOs has to date not been investigated. This study confirmed increased P assimilation in high-rate systems without chemical P removal based on two pilot studies. The SUMO2C model was calibrated to predict observed P assimilation, removal, and content of the HRAS sludge. Current models have significantly underestimated the potential of HRAS for nutrient capture, especially at sludge retention time (SRTs) ≤ 0.5 days.
Original language | English (US) |
---|---|
Pages | 1323-1326 |
Number of pages | 4 |
State | Published - 2021 |
Event | 94th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2021 - Chicago, United States Duration: Oct 16 2021 → Oct 20 2021 |
Conference
Conference | 94th Annual Water Environment Federation Technical Exhibition and Conference, WEFTEC 2021 |
---|---|
Country/Territory | United States |
City | Chicago |
Period | 10/16/21 → 10/20/21 |
Keywords
- High-rate activated sludge
- assimilation
- model
ASJC Scopus subject areas
- Ecological Modeling
- Environmental Chemistry
- Pollution
- Waste Management and Disposal
- Water Science and Technology