Wastewater Treatment Plants are often designed with a balancing tank upstream of the bioreactors. The purpose of the balancing tank is to act as a buffer against large fluctuations in inflow volume and pollutant concentration. This paper presents the options available for control of the balancing tank. The paper also presents the results of simulation tests conducted to determine the effectiveness of a modelfree, neural-network-based controller, when used for balancing tank control.

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