EFFICIENCY OF AERATION METHODS FOR NITROGEN TREATMENT IN A WASTEWATER TREATMENT PLANT

This paper presents the result of comparing two methods of total nitrogen reduction in the same wastewater treatment plant: 1) the use of one biological tank with a discrete aeration operation (ON / OFF); 2) the use of two biological tanks with continuous aeration operation for the only second tank...

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Bibliographic Details
Published in:Journal of urban and environmental engineering 2022-06, Vol.16 (1), p.66-72
Main Authors: Nguyen, Dinh Huan, Latifi, M A
Format: Article
Language:English
Subjects:
Aeration
Aeration tanks
Anoxia
Chemical oxygen demand
Computer simulation
Efficiency
Energy consumption
Methods
Nitrogen
Optimization
Pollutants
Tanks
Wastewater treatment
Wastewater treatment plants
Water treatment
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Summary:This paper presents the result of comparing two methods of total nitrogen reduction in the same wastewater treatment plant: 1) the use of one biological tank with a discrete aeration operation (ON / OFF); 2) the use of two biological tanks with continuous aeration operation for the only second tank (aerobic), the first one works like an anoxic tank. In both cases, the dynamic simulation and optimization are performed with measured data, and energy consumption for aeration operation to reduce the total nitrogen in the wastewater and other concentrations are considered to satisfy the discharge regulations. The comparison of these two methods is presented after optimization by the best operating condition. The result shows that the economic efficiency is not much different in the two methods, but in both of them, the energy consumption after optimization reduces by about 70% compared to the real operating policy of the wastewater treatment plant.
ISSN:1982-3932
DOI:10.4090/juee.2022.v16n1.066072