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Zastosowanie sondy do pomiaru zawartości azotu amonowego i azotanowego jako elementu sterowania procesem oczyszczania ścieków

Dereszewska A., Cytawa St.

Ekonomia i Zarządzanie

2012

Vol. 4, no. 1

127-135

The paper presents the potential benefits of modification of the control system of wastewater treatment in the "Swarzewo" Municipal Sewage Treatment Plant. Currently, process control is based on the determined filling level of the reactor and wastewater aeration time, regardless the concentration of pollutants in the inflow. It results in insufficient degree of removal of nitrogen compounds from wastewater aeration and unnecessary aeration of wastewater already treated. It generates additional costs because of exceeded energy consumption and environmental fees as well. The plant energy balance can be improved by supporting the existing technology by analysis of key parameters of wastewater treatment. Due to the fact that the oxidation of nitrogen compounds is the longest process of sewage mineralization, that parameter can be used as an indicator of the necessary treatment time determination. The treatment plant control system based on the content of ammonium and nitrate allows to reduce 13,3% of the blower's energy consumption and to achieve stabilization of the outflow parameters of the treatment plant.