Increased replication of dissimilatory nitrate-reducing bacteria leads to decreased anammox bioreactor performance

摘要

Performance of the anaerobic membrane bioreactor. Influent and effluent concentrations of ammonium, nitrite, and nitrate (all as N) (primary -axis) within the anaerobic membrane bioreactor performing anammox monitored over a period of 440 days. The influent did not contains nitrate, so influent nitrate is not plotted. The nitrogen removal rate (NRR) is plotted against the secondary -axis. Sampling time points for metagenomes are indicated with pink stars below the -axis. Biomass amendments are indicated with green stars below the -axis. Bioreactor crashes (either mechanically or biologically driven) are marked with a dashed red line