Master thesis / Internship in modelling of densified activated sludge in sequencing batch reactor (DAS-SBR)

Full-time CAR

Densified Activated Sludge (DAS), a hybrid system consisting of flocs and small granules (typically 200~500 μm in diameter), is a promising solution for the increasing stringent effluent quality standards and the intensification of biological processes in wastewater treatment. Compared to conventional activated sludge, DAS offers significant advantages to “do more with less” – increasing treatment capacity without expanding the plant footprint. The improved settleability enables high biomass retention, thereby substantially increasing volumetric treatment capacity. The enrichment of slow-growing bacteria, particularly nitrifiers, promotes microbial activities and provides greater flexibility for optimizing aeration strategies for enhancing nutrient removal.

The application of DAS in sequencing batch reactors (SBR) is being increasingly investigated and implemented worldwide, yielding many new valuable experimental findings and operational experience. However, a comprehensive u...