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Including greenhouse gas emissions during benchmarking of wastewater treatment plant control strategies

Flores-Alsina, Xavier ; Corominas, Lluís ; Snip, Laura ; Vanrolleghem, Peter A.

Water research (Oxford), 2011-10, Vol.45 (16), p.4700-4710 [Periódico revisado por pares]

Kidlington: Elsevier Ltd

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Título:
Including greenhouse gas emissions during benchmarking of wastewater treatment plant control strategies
Autor: Flores-Alsina, Xavier ; Corominas, Lluís ; Snip, Laura ; Vanrolleghem, Peter A.
Assuntos: Activated sludge modeling ; Air pollution ; Annan elektroteknik och elektronik ; Applied sciences ; automation ; Benchmarking ; carbon ; carbon dioxide ; carbon nitrogen ratio ; case studies ; chemical oxygen demand ; Computer simulation ; dissolved oxygen ; Effluents ; Electrical Engineering, Electronic Engineering, Information Engineering ; Elektroteknik och elektronik ; Emission analysis ; Emissions control ; Engineering and Technology ; Exact sciences and technology ; Gases ; Global warming ; Greenhouse Effect ; greenhouse gas emissions ; greenhouse gases ; Industrial Waste ; methane ; Model-based evaluation ; Multi-criteria decision making ; nitrogen ; nitrous oxide ; operating costs ; Other Electrical Engineering, Electronic Engineering, Information Engineering ; Pollution ; Process control ; simulation models ; sludge ; Strategy ; Sustainability ; Teknik ; Wastewater treatment ; Water Pollutants - isolation & purification ; Water treatment and pollution
É parte de: Water research (Oxford), 2011-10, Vol.45 (16), p.4700-4710
Notas: http://dx.doi.org/10.1016/j.watres.2011.04.040
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SourceType-Scholarly Journals-1
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Descrição: The main objective of this paper is to demonstrate how greenhouse gas (GHG) emissions can be quantified during the evaluation of control strategies in wastewater treatment plants (WWTP). A modified version of the IWA Benchmark Simulation Model No 2 (BSM2G) is hereby used as a simulation case study. Thus, the traditional effluent quality index (EQI), operational cost index (OCI) and time in violation (TIV) used to evaluate control strategies in WWTP are complemented with a new dimension dealing with GHG emissions. The proposed approach is based on a set of comprehensive models that estimate all potential on-site and off-site sources of GHG emissions. The case study investigates the overall performance of several control strategies and demonstrates that substantial reductions in effluent pollution, operating costs and GHG emissions can be achieved when automatic control is implemented. Furthermore, the study is complemented with a scenario analysis that examines the role of i) the dissolved oxygen (DO) set-point, ii) the sludge retention time (SRT) and iii) the organic carbon/nitrogen ratio (COD/N) as promoters of GHG emissions. The results of this study show the potential mechanisms that promote the formation of CO 2, CH 4 and N 2O when different operational strategies are implemented, the existing synergies and trade-offs amongst the EQI, the OCI and TIV criteria and finally the need to reach a compromise solution to achieve an optimal plant performance. ► BSM2G, including GHG emissions, was used to evaluate whole plant performance. ► Evaluation of controllers for effluent quality, operational cost and GHG emissions. ► Compromise aeration and SRT for complete nitrification, low costs and GHG emissions. ► Adding carbon reduces NO3 and N2O emissions, but increases costs and carbon footprint.
Editor: Kidlington: Elsevier Ltd
Idioma: Inglês

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Including greenhouse gas emissions during benchmarking of wastewater treatment plant control strategies

Flores-Alsina, Xavier ; Corominas, Lluís ; Snip, Laura ; Vanrolleghem, Peter A.

Kidlington: Elsevier Ltd

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