Temperature modulates stress response in mainstream anammox reactors.

ABSTRACT: Autotrophic nitrogen removal by anaerobic ammonium oxidizing (anammox) bacteria is an energy-efficient nitrogen removal process in wastewater treatment. However, full-scale deployment under mainstream conditions remains challenging for practitioners due to the high stress susceptibility of anammox bacteria towards fluctuations in dissolved oxygen (DO) and temperature. Here, we investigated the response of microbial biofilms with verified anammox activity to DO shocks under 20 °C and 14 °C. While pulse disturbances of 0.3 mg L^-1 DO prompted only moderate declines in the NH₄⁺ removal rates, 1.0 mg L^-1 DO led to complete but reversible inhibition of the NH₄⁺ removal activity in all reactors. Genome-centric metagenomics and meta

SUBMITTER: Niederdorfer R 

PROVIDER: S-EPMC7782526 | biostudies-literature | 2021 Jan

REPOSITORIES: biostudies-literature