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Wastewater Treatment Plant Operation: Simple Control Schemes with a Holistic Perspective by Revollar, S.; Vilanova, R.; Vega, P.; Francisco, M.; Meneses, M. is a Environmental Science article available to read on EtoBox.

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In this paper, a control approach for improving the overall efficiency of a wastewater treatment plant (WWTP) is presented. It consists of a cascaded control system that uses a global performance indicator as the controlled variable to drive the plant to operating conditions that satisfies trade-offs involved in the WWTP operation, improving the global performance of the plant. The selected global performance indicator is the N/E index that measures the ratio between the amount of nitrogenated compounds eliminated (kgN) and the energy (kWh) required to achieve that goal. This index links the variables of the activated sludge process with the energy consumed in the whole plant, thus the control strategy takes actions based on plantwide considerations. An external Proportional Integral (PI) controller changes the DO set point according to the N/E index and the basic dissolved oxygen (DO) control scheme in the activated sludge process follows this reference changes varying the aeration intensity. An outer loop with an event-based controller is used to compute the index values when the DO concentration is driven to excessively low limits, preventing long operation periods in this undes

Who reads Wastewater Treatment Plant Operation: Simple Control Schemes with a Holistic Perspective?

Author

Revollar, S.; Vilanova, R.; Vega, P.; Francisco, M.; Meneses, M.

Publisher

MDPI AG; MDPI Open Access Publishing; Basel: MDPI, 2009- (ISSN 2071-1050)

Published

2020

Language

EN

Field

Environmental Science (Social Sciences)