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20231223111427.0 |
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231223s2006 xx ||||| 00| ||eng c |
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|a pubmed24n0556.xml
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|a (DE-627)NLM166734705
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|a (NLM)17120439
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Madsen, H I
|e verfasserin
|4 aut
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|a Gas phase transport in gravity sewers--A methodology for determination of horizontal gas transport and ventilation
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 22.01.2007
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|a Date Revised 22.09.2019
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|a published: Print
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|a Citation Status MEDLINE
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|a A method was developed for determination of horizontal gas transport and ventilation in gravity sewers. This was achieved by changing the composition of the sewer atmosphere by pulse injection of oxygen gas and subsequently measuring the oxygen concentration in a downstream manhole. Conventional tracer techniques may require sampling and may also affect the environment. The method developed is simple, based on direct monitoring and without environmental or toxic effects. The method was developed based on measurements in an intercepting gravity sewer. The horizontal gas transport processes were quantified by measuring the velocity and dispersion of the gas in the sewer atmosphere. Based on 54 measurements, the gas velocity was found to vary between 0.05 and 0.22 m/s. The coefficients of dispersion were calculated to be in the range 0.05 to 1.1 m2/s. Climatic conditions did not significantly influence the gas phase transport
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Gases
|2 NLM
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|a Sewage
|2 NLM
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| 650 |
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|a Oxygen
|2 NLM
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| 650 |
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|a S88TT14065
|2 NLM
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| 700 |
1 |
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|a Hvitved-Jacobsen, T
|e verfasserin
|4 aut
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|a Vollertsen, J
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Water environment research : a research publication of the Water Environment Federation
|d 1998
|g 78(2006), 11 vom: 20. Okt., Seite 2203-9
|w (DE-627)NLM098214292
|x 1554-7531
|7 nnns
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| 773 |
1 |
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|g volume:78
|g year:2006
|g number:11
|g day:20
|g month:10
|g pages:2203-9
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|a AR
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|d 78
|j 2006
|e 11
|b 20
|c 10
|h 2203-9
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