TY - JOUR
T1 - Complementary Control Actions for Greenhouse Gas Emissions Reduction in Wastewater Treatment Plant Operation
AU - Santin, I.
AU - Vilanova, R.
AU - Pedret, C.
AU - Meneses, M.
AU - Arrieta, O.
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Wastewater treatment plants are necessary to improve the quality of wastewater before it is discharged into the receiving environment, but they have the disadvantage of generating nitrous oxide emissions during the biological treatment, which is a potent Greenhouse Gas (GHG). This is a serious drawback as the reduction of greenhouse gas emissions due to anthropogenic causes is one of the main challenges to face with reference to climate change effects. In this paper we examine one potential way to reduce nitrous oxide emissions by reducing the dissolved oxygen to minimum levels. To achieve this objective, the present work proposes to use the internal recirculation flow rate of the biological treatment. This is a rather forgotten manipulated variable that, as it is intended to show, may have potential side effects to complement already existing control actions. Therefore, this additional regulation is added to a usual control strategy in wastewater treatment plants, which achieves satisfactory results in water quality and in operational costs but with high nitrous oxide emissions. The Benchmark Simulation Model No.2 Gas (BSM2G) is used as working scenario, which includes the two main nitrous oxide emission pathways: heterotrophic denitrification and ammonia oxidizing bacteria denitrification.
AB - Wastewater treatment plants are necessary to improve the quality of wastewater before it is discharged into the receiving environment, but they have the disadvantage of generating nitrous oxide emissions during the biological treatment, which is a potent Greenhouse Gas (GHG). This is a serious drawback as the reduction of greenhouse gas emissions due to anthropogenic causes is one of the main challenges to face with reference to climate change effects. In this paper we examine one potential way to reduce nitrous oxide emissions by reducing the dissolved oxygen to minimum levels. To achieve this objective, the present work proposes to use the internal recirculation flow rate of the biological treatment. This is a rather forgotten manipulated variable that, as it is intended to show, may have potential side effects to complement already existing control actions. Therefore, this additional regulation is added to a usual control strategy in wastewater treatment plants, which achieves satisfactory results in water quality and in operational costs but with high nitrous oxide emissions. The Benchmark Simulation Model No.2 Gas (BSM2G) is used as working scenario, which includes the two main nitrous oxide emission pathways: heterotrophic denitrification and ammonia oxidizing bacteria denitrification.
KW - Benchmark Simulation Model No.2
KW - Greenhouse Gas Emissions
KW - Internal Recirculation Flow Rate
KW - Wastewater Biological Treatment
UR - http://www.scopus.com/inward/record.url?scp=85142493418&partnerID=8YFLogxK
U2 - 10.1109/ICSTCC55426.2022.9931777
DO - 10.1109/ICSTCC55426.2022.9931777
M3 - Article
AN - SCOPUS:85142493418
SP - 68
EP - 73
JO - 2022 26th International Conference on System Theory, Control and Computing, ICSTCC 2022 - Proceedings
JF - 2022 26th International Conference on System Theory, Control and Computing, ICSTCC 2022 - Proceedings
ER -