Reactor characterization and the application of biological selective pressure for granulation in a CAGS pilot

Bachelor Thesis (2018)
Author(s)

D.N.A. van der Vorm (TU Delft - Applied Sciences)

Contributor(s)

Viktor A. Haaksman – Coach (TU Delft - BT/Environmental Biotechnology)

Mario Pronk – Graduation committee member (TU Delft - BT/Environmental Biotechnology)

M. C M van Loosdrecht – Mentor (TU Delft - BT/Environmental Biotechnology)

Faculty
Applied Sciences
Copyright
© 2018 Daan van der Vorm
More Info
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Publication Year
2018
Language
English
Copyright
© 2018 Daan van der Vorm
Graduation Date
24-07-2018
Awarding Institution
Delft University of Technology
Programme
['Life Science and Technology (LST)']
Faculty
Applied Sciences
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Abstract

Treatment of wastewater with aerobic granular sludge (AGS) has major advantages compared to activated sludge. The only commercial system that uses AGS is the Nereda® batch process. The disadvantage of this system is the lack of existing infrastructure. AGS in continuous systems could be a solution to this disadvantage. That’s why the HARKOS pilot is built. This pilot is based on the enhanced biological phosphorus removal (EBPR) process. The aim of this study is to make sure this pilot runs according to the EBPR process (reactor characterization) and to apply biological selective pressure for granulation. This biological selective pressure consists out of four pillars. Prevention of COD overshoot into the aerobic zone, as much COD in the anaerobic zone to storage polymers, enrichment for bio-p organisms and compartmentalization of the reactor. It’s concluded that the pilot is characterized, that no COD overshoot is present, that more COD is stored as storage polymers, that the sludge is enriched for bio-p organisms and that the reactor is well enough compartmentalized. The biological selective pressure is applied. If enough physical selective pressure is applied granulation will start in the HARKOS pilot.

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