Oxygen transfer process simulation in wastewater aeration tank
2007
Sniders, A. | Laizans, A.
The research paper discusses oxygen transfer process in wastewater biological treatment system, and provides mathematical model and simulation of steady state oxygen transfer from supplied air to the activated sludge in wastewater aeration tank. Wastewater aeration is one of the most important components of the biological treatment process from energy point of view because of large energy consumption and need for non-stop operations. Thus, the process of oxygen transfer is not only technical, but also economic matter of great importance, and must been considered as a main factor of optimization. In order to observe this process the mathematical model of aeration tank as a non-linear control object with variable sensitivity and response inertia indicators is been compiled. Oxygen transfer process was simulated, using Matlab Simulink technology, taking in account the impact of constructive parameters of aeration unit and randomly fluctuating perturbations - waste-water afflux and biological oxygen need on the control variable - oxygen concentration. Simulation model will enable to design the adaptive invariant control system for optimal wastewater aeration.
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