Simulating ultrasonic activated sludge disintegration for excess sludge reduction in SBR systems

Autor: N. Lambert, R. Dewil, P. Buffel, K. Van Eyck, Huy Hoang Pham, R. Van den Broeck, Ilse Smets
Rok vydání: 2013
Předmět:
Zdroj: IFAC Proceedings Volumes. 46:12-17
ISSN: 1474-6670
DOI: 10.3182/20131216-3-in-2044.00035
Popis: This paper presents an integrated mathematical model that is capable of predicting and assessing the impact of ultrasonic (US) treatment on the excess activated sludge production in a sequencing batch reactor (SBR) system. Such a model can be exploited to maximize the excess sludge reduction while minimizing the US operational costs in biological wastewater treatment systems. Biological processes in the reactor are simulated in Matlab®/Simulink by the ASM1 model into which two algebraic equations, which capture the US treatment, are integrated. Validation data series come from a pilot plant installed at two locations, i.e., at a communal wastewater treatment plant and at an industrial production site of a food flavor producing factory in Haasrode both in the Flanders region in Belgium. The results show that the excess sludge reduction from the SBR can be correctly predicted. A reduction of nearly 42% for the communal case study can be reported, while preliminary results for the industrial case study, characterized by a very high organic loading, are even more promising.
Databáze: OpenAIRE