Relationship between manual air valve positioning, water quality and energy usage in activated sludge processes.

Bioreactors Oxygen Sewage Waste Disposal, Fluid Water Purification Water Quality
Aeration Air valve Multi-objective Pareto Wastewater

Journal

Water research
ISSN: 1879-2448
Titre abrégé: Water Res
Pays: England
ID NLM: 0105072

Informations de publication

Date de publication:
15 Apr 2020
Historique:
received: 05 09 2019
revised: 20 01 2020
accepted: 22 01 2020
pubmed: 6 2 2020
medline: 9 4 2020
entrez: 5 2 2020
Statut: ppublish

Résumé

Diffused aeration is the most implemented method for oxygen transfer in municipal activated sludge systems and governs the economics of the entire treatment process. Empirical observations are typically used to regulate airflow distribution through the adjustment of manual valves. However, due to the associated degrees of freedom, the identification of a combination of manual valves that optimizes all performance criteria is a complex task. For the first time a multi-criteria optimization algorithm was used to minimize effluent constituents and energy use by parametrizing manual valves positions. Data from a full-scale facility in conjunction with specific model assumptions were used to develop a base-case facility consisting of a detailed air supply model, a bio-kinetic model and a clarification model. Compared to the base-case condition, trade-offs analysis showed potential energy savings of up to 13.6% and improvement of effluent quality for NH

Identifiants

DOI: 10.1016/j.watres.2020.115537 PMID: 32014702
pubmed: 32014702
pii: S0043-1354(20)30073-7
doi: 10.1016/j.watres.2020.115537
pii:
doi:

Substances chimiques

Sewage 0
Oxygen S88TT14065

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Pagination

115537

Informations de copyright

Copyright © 2020 Elsevier Ltd. All rights reserved.

Déclaration de conflit d'intérêts

Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Auteurs

Samuel Reifsnyder (S)

Department of Civil and Environmental Engineering, University of California, Irvine, CA, 92697-2175, USA; Water-Energy Nexus Center, University of California, Irvine, CA, 92697-2175, USA. Electronic address: sreifsny@uci.edu.

Manel Garrido-Baserba (M)

Department of Civil and Environmental Engineering, University of California, Irvine, CA, 92697-2175, USA; Water-Energy Nexus Center, University of California, Irvine, CA, 92697-2175, USA. Electronic address: mgbaserba@gmail.com.

Francesca Cecconi (F)

Department of Civil and Environmental Engineering, University of California, Irvine, CA, 92697-2175, USA; Water-Energy Nexus Center, University of California, Irvine, CA, 92697-2175, USA. Electronic address: fcecconi@uci.edu.

Larry Wong (L)

Sanitation Districts of Los Angeles County, 1955 Workman Mill Rd, Whittier, CA, 90601, USA.

Phil Ackman (P)

Sanitation Districts of Los Angeles County, 1955 Workman Mill Rd, Whittier, CA, 90601, USA.

Nikos Melitas (N)

Sanitation Districts of Los Angeles County, 1955 Workman Mill Rd, Whittier, CA, 90601, USA.

Diego Rosso (D)

Department of Civil and Environmental Engineering, University of California, Irvine, CA, 92697-2175, USA; Water-Energy Nexus Center, University of California, Irvine, CA, 92697-2175, USA.

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Classifications MeSH

questionsmedicales.fr › Technologie, industrie et agriculture › Technologie › Biotechnologie › Bioréacteurs › Relationship between manual air valve...
questionsmedicales.fr › Produits chimiques inorganiques › Gaz › Oxygène › Relationship between manual air valve...
questionsmedicales.fr › Mélanges complexes › Eaux d'égout › Relationship between manual air valve...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Amélioration du niveau sanitaire › Génie sanitaire › Gestion des déchets › Élimination des déchets › Élimination des déchets liquides › Relationship between manual air valve...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Amélioration du niveau sanitaire › Génie sanitaire › Gestion des déchets › Purification de l'eau › Relationship between manual air valve...
questionsmedicales.fr › Environnement et santé publique › Santé publique › Pollution de l'environnement › Pollution de l'eau › Qualité de l'eau › Relationship between manual air valve...