Wastewater treatment plants are used globally to reduce the effects of anthropogenic pollution on aquatic ecosystems. These stations operate on similar principles, but with design differences depending on the needs for which they were built. In order to avoid certain environmental risks and to increase the performance of these stations, automatic control strategies are implemented. Therefore, each wastewater treatment plant presents control strategies that vary from case to case. This paper presents results obtained from the implementation of a dissolved oxygen control strategy, at the level of the bioreactor of a simulated wastewater treatment plant, in order to streamline the nitrification and denitrification processes. The simulations were performed on the BSM2 model (Benchmark Simulation Model No.2).

Acknowledgements: “The work of the first author is supported by the project ANTREPRENORDOC, in the framework of Human Resources Development Operational Programme 2014-2020, financed from the European Social Fund under the contract number 36355/23.05.2019 HRD OP /380/6/13 – SMIS Code: 123847. The work of the second author was carried out in the framework of the research project DREAM (Dynamics of the REsources and technological Advance in harvesting Marine renewable energy), supported by the Romanian Executive Agency for Higher Education, Research, Development and Innovation Funding – UEFISCDI, grant number PN-III-P4-ID- PCE-2020-0008.”