Long-term optimal aeration strategies for small-size alternating activated sludge treatment plants
Identifieur interne : 001482 ( Main/Exploration ); précédent : 001481; suivant : 001483Long-term optimal aeration strategies for small-size alternating activated sludge treatment plants
Auteurs : B. Chachuat [France] ; N. Roche [France] ; M. A. Latifi [France]Source :
- Chemical engineering and processing [ 0255-2701 ] ; 2005.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Biomasse.
English descriptors
- KwdEn :
Abstract
This paper discusses the influence of time horizon on dynamic optimization of small-size wastewater treatment plants alternating aerobic and anoxic processes. The optimization problem consists in determining the aeration policy (air-on and air-off periods) that minimizes the energy dissipated by the aeration system subject to both effluent and operating constraints. Optimization over short time horizons is first considered and reductions of the energy consumption up to 30% are obtained with respect to the usual operating mode of the process. But the application of such aeration strategies eventually results in a biomass wash-out when applied over long time periods. Here, it is shown that long time horizon optimized policies guarantee a durable functioning of the treatment plant. The resulting energy consumption savings are however lower (up to 15%), but are still important.
Affiliations:
- France
- Grand Est, Lorraine (région), Provence-Alpes-Côte d'Azur
- Aix en Provence, Nancy
- Université d'Aix-Marseille
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Le document en format XML
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Chachuat</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire des Sciences du Génie Chimique, UPR 6811 CNRS-ENSIC, 1 rue Grandville, BP 451</s1><s2>54001 Nancy</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName></affiliation></author><author><name sortKey="Roche, N" sort="Roche, N" uniqKey="Roche N" first="N." last="Roche">N. Roche</name><affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Laboratoire de Procédés Propres et Environnement, UMR 6181 CNRS-Université d'Aix-Marseille, Europole de l'Arbois, bat. 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Latifi</name><affiliation wicri:level="3"><inist:fA14 i1="01"><s1>Laboratoire des Sciences du Génie Chimique, UPR 6811 CNRS-ENSIC, 1 rue Grandville, BP 451</s1><s2>54001 Nancy</s2><s3>FRA</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>France</country><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Lorraine (région)</region><settlement type="city">Nancy</settlement></placeName></affiliation></author></analytic><series><title level="j" type="main">Chemical engineering and processing</title><title level="j" type="abbreviated">Chem. eng. process.</title><idno type="ISSN">0255-2701</idno><imprint><date when="2005">2005</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Chemical engineering and processing</title><title level="j" type="abbreviated">Chem. eng. process.</title><idno type="ISSN">0255-2701</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activated sludge</term><term>Aeration</term><term>Aerobe</term><term>Biomass</term><term>Energy consumption</term><term>Long term</term><term>Optimization</term><term>Sewage treatment plant</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Long terme</term><term>Aération</term><term>Boue activée</term><term>Optimisation</term><term>Station épuration</term><term>Aérobie</term><term>Consommation énergie</term><term>Biomasse</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Biomasse</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper discusses the influence of time horizon on dynamic optimization of small-size wastewater treatment plants alternating aerobic and anoxic processes. The optimization problem consists in determining the aeration policy (air-on and air-off periods) that minimizes the energy dissipated by the aeration system subject to both effluent and operating constraints. Optimization over short time horizons is first considered and reductions of the energy consumption up to 30% are obtained with respect to the usual operating mode of the process. But the application of such aeration strategies eventually results in a biomass wash-out when applied over long time periods. Here, it is shown that long time horizon optimized policies guarantee a durable functioning of the treatment plant. The resulting energy consumption savings are however lower (up to 15%), but are still important.</div></front></TEI><affiliations><list><country><li>France</li></country><region><li>Grand Est</li><li>Lorraine (région)</li><li>Provence-Alpes-Côte d'Azur</li></region><settlement><li>Aix en Provence</li><li>Nancy</li></settlement><orgName><li>Université d'Aix-Marseille</li></orgName></list><tree><country name="France"><region name="Grand Est"><name sortKey="Chachuat, B" sort="Chachuat, B" uniqKey="Chachuat B" first="B." last="Chachuat">B. Chachuat</name></region><name sortKey="Latifi, M A" sort="Latifi, M A" uniqKey="Latifi M" first="M. A." last="Latifi">M. A. Latifi</name><name sortKey="Roche, N" sort="Roche, N" uniqKey="Roche N" first="N." last="Roche">N. Roche</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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