Sludge settling processes in SBR-related sewage treatment plants according to the Biocos method.
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| Title: | Sludge settling processes in SBR-related sewage treatment plants according to the Biocos method. |
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| Authors: | Meusel, S.1 sten.meusel@bauing.uni-weimar.de, Englert, R.1 ralf.englert@bauing.uni-weimar.de |
| Source: | Water Science & Technology. 2004, Vol. 50 Issue 10, p279-286. 8p. |
| Subjects: | Sequencing batch reactor process, Thickening of sewage sludge, Water quality management, Wastewater treatment, Sedimentation analysis, Sedimentation & deposition, Suspensions (Chemistry), Activated sludge process |
| Abstract: | This paper describes the investigations in a sedimentation and circulation reactor (SU-reactor) of a three-phase Biocos plant. The aim of these investigations was the determination of the temporal and depth-dependent distribution of suspended solid contents, as well as describing the sludge sedimentation curves. The calculated results reveal peculiarities of the Biocos method with regard to sedimentation processes. In the hydraulically uninterrupted (pre-)settling phase, a sludge level depth was observed, which remained constant over the reactor surface and increased linearly according to the sludge volume. The settling and the thickening processes of this phase corresponded to a large extent to the well-known settling test in a one-litre measuring cylinder. During the discharge phase, the investigated settling rate was overlaid by the surface loading rate and the sludge level changed depending on the difference between those two parameters. The solid distribution of the A-phase indicated a formation of functional zones, which were influenced by the surface loading. The formation was comparable to the formation of layers in secondary settling tanks with vertical flow. The concentration equalisation between the biological reactor and the SU-reactor proved to be problematic during the circulation phase, because a type of internal sludge circulation occurred in the SU-reactor. A permanent sludge recirculation seems to be highly recommendable. [ABSTRACT FROM AUTHOR] |
| Copyright of Water Science & Technology is the property of IWA Publishing 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 | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 26753500 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Sludge settling processes in SBR-related sewage treatment plants according to the Biocos method. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Meusel%2C+S%2E%22">Meusel, S.</searchLink><relatesTo>1</relatesTo><i> sten.meusel@bauing.uni-weimar.de</i><br /><searchLink fieldCode="AR" term="%22Englert%2C+R%2E%22">Englert, R.</searchLink><relatesTo>1</relatesTo><i> ralf.englert@bauing.uni-weimar.de</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Water+Science+%26+Technology%22">Water Science & Technology</searchLink>. 2004, Vol. 50 Issue 10, p279-286. 8p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Sequencing+batch+reactor+process%22">Sequencing batch reactor process</searchLink><br /><searchLink fieldCode="DE" term="%22Thickening+of+sewage+sludge%22">Thickening of sewage sludge</searchLink><br /><searchLink fieldCode="DE" term="%22Water+quality+management%22">Water quality management</searchLink><br /><searchLink fieldCode="DE" term="%22Wastewater+treatment%22">Wastewater treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentation+analysis%22">Sedimentation analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Sedimentation+%26+deposition%22">Sedimentation & deposition</searchLink><br /><searchLink fieldCode="DE" term="%22Suspensions+%28Chemistry%29%22">Suspensions (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Activated+sludge+process%22">Activated sludge process</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper describes the investigations in a sedimentation and circulation reactor (SU-reactor) of a three-phase Biocos plant. The aim of these investigations was the determination of the temporal and depth-dependent distribution of suspended solid contents, as well as describing the sludge sedimentation curves. The calculated results reveal peculiarities of the Biocos method with regard to sedimentation processes. In the hydraulically uninterrupted (pre-)settling phase, a sludge level depth was observed, which remained constant over the reactor surface and increased linearly according to the sludge volume. The settling and the thickening processes of this phase corresponded to a large extent to the well-known settling test in a one-litre measuring cylinder. During the discharge phase, the investigated settling rate was overlaid by the surface loading rate and the sludge level changed depending on the difference between those two parameters. The solid distribution of the A-phase indicated a formation of functional zones, which were influenced by the surface loading. The formation was comparable to the formation of layers in secondary settling tanks with vertical flow. The concentration equalisation between the biological reactor and the SU-reactor proved to be problematic during the circulation phase, because a type of internal sludge circulation occurred in the SU-reactor. A permanent sludge recirculation seems to be highly recommendable. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Water Science & Technology is the property of IWA Publishing 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: 10.2166/wst.2004.0661 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 8 StartPage: 279 Subjects: – SubjectFull: Sequencing batch reactor process Type: general – SubjectFull: Thickening of sewage sludge Type: general – SubjectFull: Water quality management Type: general – SubjectFull: Wastewater treatment Type: general – SubjectFull: Sedimentation analysis Type: general – SubjectFull: Sedimentation & deposition Type: general – SubjectFull: Suspensions (Chemistry) Type: general – SubjectFull: Activated sludge process Type: general Titles: – TitleFull: Sludge settling processes in SBR-related sewage treatment plants according to the Biocos method. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Meusel, S. – PersonEntity: Name: NameFull: Englert, R. IsPartOfRelationships: – BibEntity: Dates: – D: 15 M: 11 Text: 2004 Type: published Y: 2004 Identifiers: – Type: issn-print Value: 02731223 Numbering: – Type: volume Value: 50 – Type: issue Value: 10 Titles: – TitleFull: Water Science & Technology Type: main |
| ResultId | 1 |
