To elucidate how high dissolved oxygen (DO) favors the startup of nitritation with aerobic granular sludge, two reactors were operated under low (1–2 mg O2·L−1) and DO (3–5 conditions similar effluent ammonium concentrations (>20 N·L−1). The results showed that though an average nitrite accumulation ratio above 95% was finally achieved in both reactors, a five-fold start-up time (eleven weeks) ...

The implementation of anaerobic membrane bioreactor as mainstream technology would reduce the load sidestream digesters. This research evaluated techno-economic implications co-digesting sewage sludge and food waste in such wastewater treatment plants to optimise usage line infrastructure. Three organic loading rates (1.0, 1.5 2.0 kg VS m−3 d−1) different strategies manage additional nutrients ...

The one-stage partial nitritation and anammox process with the hydroxyapatite (HAP)-based syntrophic granules was studied for ammonium nitrogen removal from effluents of a self-agitated anaerobic baffled reactor treating fish processing wastewater. When in influent 1140 mg N·L-1, high rate efficiency 1.51 ± 0.10 kg N·m−3·d-1 88.2% were obtained, respectively. Anammox bacteria Candidatus Kueneni...