Modelling of sequencing batch reactor operating at various aeration modes

Grzegorz Łagód; Adam Piotrowicz; Piotr Gleń; Jakub Drewnowski; Fabrizio Sabba

doi:10.1051/matecconf/201925205013

Modelling of sequencing batch reactor operating at various aeration modes

Abstract

The presented study involved designing a computer model of a sequencing batch reactor (SBR) at laboratory scale. The data pertaining to the technical aspects of the bioreactor and quality indicators of wastewater constituted the input for the employed simulation tool, i.e. GPS-X software package. The results of a simulation involving a 12-hour operation cycle are presented in this work; each cycle included 6 phases: filling, mixing, aeration, settling, decantation and idling (wasting of excess sludge). The simulations were carried out using two different modes of aeration. Concentration of dissolved oxygen (DO) was maintained at constant level of 2 mgO2/L using the PID controller in the first case. On the other hand, variation of DO concentration was employed in the aeration stage of the second variant, which was achieved using appropriately elaborated set point of oxygen concentration, considering the specific intervals in oxygen supply. The changes observed in DO concentration varied from 0.5 to 2.5 mgO2/L. This research proved that the second variant, involving variation of DO concentration, was characterised by reduced levels of pollution indicators in treated sewage, as well as lower consumption of electricity, both of which contributed towards improving the effluent quality and resulted in significant degree of dephosphatation.

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Authors (5)

Grzegorz Łagód Dr inż.
Adam Piotrowicz Dr inż.
Piotr Gleń
Jakub Drewnowski dr hab. inż.
Fabrizio Sabba

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Category:: Articles
Type:: artykuły w czasopismach
Published in:: MATEC Web of Conferences no. 252,
ISSN: 2261-236X
Language:: English
Publication year:: 2019
Bibliographic description:: Łagód G., Piotrowicz A., Gleń P., Drewnowski J., Sabba F.: Modelling of sequencing batch reactor operating at various aeration modes// MATEC Web of Conferences -Vol. 252, (2019), s.05013-
DOI:: Digital Object Identifier (open in new tab) 10.1051/matecconf/201925205013
Verified by:: Gdańsk University of Technology