Anatomy of super‐fast activated sludge process with gravity settling for biodegradation and energy recovery potential ‐ a review. Issue 5 (10th January 2022)

• Record Type: Journal Article
• Authors: Orhon, Derin; Sözen, Seval; Ubay Çokgör, Emine; Janssen, Paul
• Is Part Of: Journal of chemical technology & biotechnology. Volume 97:Issue 5(2022)
• Page Start: 1086
• Page End: 1098
• Publication Date: 2022-01-10
• Subjects: activated sludge -- modified aeration -- the A process -- biodegradation -- energy recovery -- modelling; Biotechnology -- Periodicals; Chemistry, Technical -- Periodicals; Chemical engineering -- Periodicals; Industries -- Environmental aspects -- Periodicals; 660
• DOI: 10.1002/jctb.7012
• Languages: English
• ISSNs: 0268-2575

Abstract

Abstract: This study reviewed the conceptual basis and the application of extremely high rate activated sludge configurations with gravity settling. It evaluated the modified aeration process, as the historical pioneering development, and the A process (adsorption), which was inspired by the traditional AB process (adsorption/biological oxidation) promulgated in the seventies. For this purpose, a modelling framework was established to simulate the expected performance and the energy recovery potential of these processes using the currently applicable data base. The model evaluation was also extended to cover the Yenikapı plant in Istanbul as a current case study. The modelling results were discussed in view of the handicaps of gravity settling and the merit of high‐rate membrane bioreactors where gravity settling would be replaced by membrane filtration. © 2021 Society of Chemical Industry (SCI).