Oxygen Transfer Parameter Estimation: Impact of Methodology.
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| Title: | Oxygen Transfer Parameter Estimation: Impact of Methodology. |
|---|---|
| Authors: | Jiang, Pan1, Stenstrom, Michael K.2 stenstro@seas.ucla.edu |
| Source: | Journal of Environmental Engineering. Feb2012, Vol. 138 Issue 2, p137-142. 6p. 1 Chart, 5 Graphs. |
| Subjects: | Activated sludge process, Characterization of sewage sludge, Reactive oxygen species, Sewage disposal plants, Energy consumption, Environmental engineering, Parameter estimation |
| Abstract: | Oxygen transfer is an important part of wastewater treatment and accounts for as much as 60% of energy consumption in the activated sludge process. Prior to 1984, no standard method for quantifying oxygen transfer existed, which created problems in the design and warranties for treatment plants. The ASCE standards for the measurement of oxygen transfer in clean water and the Standard Guidelines for In-Process Oxygen Transfer Testing have found widespread application and have reduced design variability. The standard has allowed operators and engineers to better evaluate process operation of existing treatment plants. This paper illustrates the key concepts of the standard and shows why they are important and how they reduce the variability of oxygen transfer testing. The reasons for the standard's success are described, as are the pitfalls of earlier approaches. The paper also highlights key new areas of the revised clean water standard, including an optional correction for test water total dissolved solids concentration and applications to the loop (ditch) activated sludge process and the high-purity-oxygen activated sludge process. Finally an analysis is presented that shows how numerical treatment of the transfer data minimizes the impact of gas-side oxygen depletion. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 72408430 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Oxygen Transfer Parameter Estimation: Impact of Methodology. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Jiang%2C+Pan%22">Jiang, Pan</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Stenstrom%2C+Michael+K%2E%22">Stenstrom, Michael K.</searchLink><relatesTo>2</relatesTo><i> stenstro@seas.ucla.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Environmental+Engineering%22">Journal of Environmental Engineering</searchLink>. Feb2012, Vol. 138 Issue 2, p137-142. 6p. 1 Chart, 5 Graphs. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Activated+sludge+process%22">Activated sludge process</searchLink><br /><searchLink fieldCode="DE" term="%22Characterization+of+sewage+sludge%22">Characterization of sewage sludge</searchLink><br /><searchLink fieldCode="DE" term="%22Reactive+oxygen+species%22">Reactive oxygen species</searchLink><br /><searchLink fieldCode="DE" term="%22Sewage+disposal+plants%22">Sewage disposal plants</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+consumption%22">Energy consumption</searchLink><br /><searchLink fieldCode="DE" term="%22Environmental+engineering%22">Environmental engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Parameter+estimation%22">Parameter estimation</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Oxygen transfer is an important part of wastewater treatment and accounts for as much as 60% of energy consumption in the activated sludge process. Prior to 1984, no standard method for quantifying oxygen transfer existed, which created problems in the design and warranties for treatment plants. The ASCE standards for the measurement of oxygen transfer in clean water and the Standard Guidelines for In-Process Oxygen Transfer Testing have found widespread application and have reduced design variability. The standard has allowed operators and engineers to better evaluate process operation of existing treatment plants. This paper illustrates the key concepts of the standard and shows why they are important and how they reduce the variability of oxygen transfer testing. The reasons for the standard's success are described, as are the pitfalls of earlier approaches. The paper also highlights key new areas of the revised clean water standard, including an optional correction for test water total dissolved solids concentration and applications to the loop (ditch) activated sludge process and the high-purity-oxygen activated sludge process. Finally an analysis is presented that shows how numerical treatment of the transfer data minimizes the impact of gas-side oxygen depletion. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Environmental Engineering is the property of American Society of Civil Engineers and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1061/(ASCE)EE.1943-7870.0000456 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 137 Subjects: – SubjectFull: Activated sludge process Type: general – SubjectFull: Characterization of sewage sludge Type: general – SubjectFull: Reactive oxygen species Type: general – SubjectFull: Sewage disposal plants Type: general – SubjectFull: Energy consumption Type: general – SubjectFull: Environmental engineering Type: general – SubjectFull: Parameter estimation Type: general Titles: – TitleFull: Oxygen Transfer Parameter Estimation: Impact of Methodology. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Jiang, Pan – PersonEntity: Name: NameFull: Stenstrom, Michael K. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2012 Type: published Y: 2012 Identifiers: – Type: issn-print Value: 07339372 Numbering: – Type: volume Value: 138 – Type: issue Value: 2 Titles: – TitleFull: Journal of Environmental Engineering Type: main |
| ResultId | 1 |
