Simulation and calibration of a full-scale sequencing batch reactor for wastewater treatment

Abstract

-The aim of this study is to apply the main mathematical models used in activated sludge reactors, the Activated Sludge Model No. 1 (ASM1) and its variations (ASM2d and ASM3), to predict the behavior of a full-scale sequencing batch reactor (SBR) used for the treatment of domestic wastewater employing the software ASIM®. Two cycles were studied, the step-feed cycle and conventional filling. Samples were taken from the raw influent, from the reactor and from the treated wastewater, and these data were used to calibrate the models. The ASM1 model was the best model to represent the cycle with only an input, while model ASM3 was the best for simulating the scaled filling cycle. This work presents calibrated parameters for the two kinds of filling. The results of these simulations indicate that the calibration process succeeded and can be used as a model for future studies.

Sequencing batch reactor technology for landfill leachate treatment: A state-of-the-art review

“…The one-input cycle gave better nutrient removal. However, the step-feed cycle was harder to calibrate (Oselame, Fernandes, & Costa, 2014). The ASM3 model effectively operated even under perturbation conditions and accurately simulate short-term effects arising from the variation of influent organic loadings such as in leachate.…”

Removal of Total Dissolved Solids from Reverse Osmosis Concentrates from a Municipal Wastewater Reclamation Plant by Aerobic Granular Sludge

“…For effective mixing, the different coagulants and sorbents were injected near the stirring paddles using a pipette tip [36]. The sample was first mixed rapidly for 1 min at 400 rpm, followed by slow stirring for 6 h at 150 rpm in order to simulate the full-scale SBR process (1 cycle of 4 h of aerobic reaction, 1 h of sedimentation, 0.5 h of withdrawing, and 0.5 h of filling) [37,38].…”