The impact of private networks on off-flavour episodes in tap water.
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| Title: | The impact of private networks on off-flavour episodes in tap water. |
|---|---|
| Authors: | Maillet, L.1 laetitia.maillet@veolia.com, Lénès, D.1 dorothee.lenes@veolia.com, Benanou, D.1, Le Cloirec, P.2, Correc, O.3 |
| Source: | Journal of Water Supply: Research & Technology-AQUA. Dec2009, Vol. 58 Issue 8, p571-579. 9p. 1 Diagram, 7 Charts, 1 Graph. |
| Subjects: | Drinking water, Polyvinyl chloride, Water pollution, Gas chromatography/Mass spectrometry (GC-MS), Polycyclic aromatic hydrocarbons |
| Abstract: | Complaints registered by Veolia water agencies underlined the design and operating parameters in the private network can cause taste and odour (T&O) episodes. Three experiments were performed to elucidate the impact of the private network. Firstly, a lab-scale pilot study was designed involving four different pipes, consisting of copper, polyvinyl chloride, stainless steel and galvanized steel in which several residence times were simulated. The study was then conducted on a real private network. Finally, laboratory static experiments on tap seals were carried out. To evaluate T&O potential of drinking water samples, sensory analyses by a taste panel were performed. To detect and to quantify the molecules involved, stir bar sorptive extraction coupled with gas chromatography/mass spectrometry analyses was applied. The results showed that the residence time had a significant influence on the appearance of organic and metallic compounds. An audit of the private network identified two main critical points — corrosion and leaching — both of which are influenced by the hydraulic system. Finally, static experiments conducted on seals revealed a large quantity of polycyclic aromatic hydrocarbons leaching into water and a chemical or plastic taste according to the panel. These results suggest a huge potential impact of the private network on water quality if operating conditions are not optimal. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Water Supply: Research & Technology-AQUA 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: 47675652 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: The impact of private networks on off-flavour episodes in tap water. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Maillet%2C+L%2E%22">Maillet, L.</searchLink><relatesTo>1</relatesTo><i> laetitia.maillet@veolia.com</i><br /><searchLink fieldCode="AR" term="%22Lénès%2C+D%2E%22">Lénès, D.</searchLink><relatesTo>1</relatesTo><i> dorothee.lenes@veolia.com</i><br /><searchLink fieldCode="AR" term="%22Benanou%2C+D%2E%22">Benanou, D.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Le+Cloirec%2C+P%2E%22">Le Cloirec, P.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Correc%2C+O%2E%22">Correc, O.</searchLink><relatesTo>3</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Water+Supply%3A+Research+%26+Technology-AQUA%22">Journal of Water Supply: Research & Technology-AQUA</searchLink>. Dec2009, Vol. 58 Issue 8, p571-579. 9p. 1 Diagram, 7 Charts, 1 Graph. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Drinking+water%22">Drinking water</searchLink><br /><searchLink fieldCode="DE" term="%22Polyvinyl+chloride%22">Polyvinyl chloride</searchLink><br /><searchLink fieldCode="DE" term="%22Water+pollution%22">Water pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Gas+chromatography%2FMass+spectrometry+%28GC-MS%29%22">Gas chromatography/Mass spectrometry (GC-MS)</searchLink><br /><searchLink fieldCode="DE" term="%22Polycyclic+aromatic+hydrocarbons%22">Polycyclic aromatic hydrocarbons</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Complaints registered by Veolia water agencies underlined the design and operating parameters in the private network can cause taste and odour (T&O) episodes. Three experiments were performed to elucidate the impact of the private network. Firstly, a lab-scale pilot study was designed involving four different pipes, consisting of copper, polyvinyl chloride, stainless steel and galvanized steel in which several residence times were simulated. The study was then conducted on a real private network. Finally, laboratory static experiments on tap seals were carried out. To evaluate T&O potential of drinking water samples, sensory analyses by a taste panel were performed. To detect and to quantify the molecules involved, stir bar sorptive extraction coupled with gas chromatography/mass spectrometry analyses was applied. The results showed that the residence time had a significant influence on the appearance of organic and metallic compounds. An audit of the private network identified two main critical points — corrosion and leaching — both of which are influenced by the hydraulic system. Finally, static experiments conducted on seals revealed a large quantity of polycyclic aromatic hydrocarbons leaching into water and a chemical or plastic taste according to the panel. These results suggest a huge potential impact of the private network on water quality if operating conditions are not optimal. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Water Supply: Research & Technology-AQUA 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/aqua.2009.020 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 571 Subjects: – SubjectFull: Drinking water Type: general – SubjectFull: Polyvinyl chloride Type: general – SubjectFull: Water pollution Type: general – SubjectFull: Gas chromatography/Mass spectrometry (GC-MS) Type: general – SubjectFull: Polycyclic aromatic hydrocarbons Type: general Titles: – TitleFull: The impact of private networks on off-flavour episodes in tap water. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Maillet, L. – PersonEntity: Name: NameFull: Lénès, D. – PersonEntity: Name: NameFull: Benanou, D. – PersonEntity: Name: NameFull: Le Cloirec, P. – PersonEntity: Name: NameFull: Correc, O. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 12 Text: Dec2009 Type: published Y: 2009 Identifiers: – Type: issn-print Value: 16069935 Numbering: – Type: volume Value: 58 – Type: issue Value: 8 Titles: – TitleFull: Journal of Water Supply: Research & Technology-AQUA Type: main |
| ResultId | 1 |
