Characterisation of textile shape and position upstream of a wastewater pump under different part load conditions

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Abstract

Accumulations of sanitary textile materials often lead to clogging of pumps in the wastewater system. Simulation of clogging phenomena may help to identify means of reducing the risk of clogging. In order to provide realistic initial conditions for clogging simulations, this study characterises textiles in artificial wastewater in the suction pipe to a dry-installed pump at nine different operating points. The textiles are recorded approximately 3.5 pipe diameters from the pump inlet and approximately three pipe diameters from the suction pipe bend at pipe Reynolds numbers in the range 300,000–900,000. Parameters of position, orientation, elongation and projected two-dimensional (2D) area are extracted using image analysis. The resulting parameters from the different operating points are compared using analysis of variance. The results show that the position, orientation and elongation do not change significantly with the operating point, while the projected 2D area decreases with an increased flow.
Original languageEnglish
JournalUrban Water Journal
Volume15
Issue number2
Pages (from-to)132-137
Number of pages6
ISSN1573-062X
DOIs
Publication statusPublished - 2018

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pump
pipe
wastewater
simulation
analysis of variance
suction
Reynolds number
variance analysis
image analysis
textile
parameter

Keywords

  • Wastewater
  • Pumps
  • Image processing

Cite this

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title = "Characterisation of textile shape and position upstream of a wastewater pump under different part load conditions",
abstract = "Accumulations of sanitary textile materials often lead to clogging of pumps in the wastewater system. Simulation of clogging phenomena may help to identify means of reducing the risk of clogging. In order to provide realistic initial conditions for clogging simulations, this study characterises textiles in artificial wastewater in the suction pipe to a dry-installed pump at nine different operating points. The textiles are recorded approximately 3.5 pipe diameters from the pump inlet and approximately three pipe diameters from the suction pipe bend at pipe Reynolds numbers in the range 300,000–900,000. Parameters of position, orientation, elongation and projected two-dimensional (2D) area are extracted using image analysis. The resulting parameters from the different operating points are compared using analysis of variance. The results show that the position, orientation and elongation do not change significantly with the operating point, while the projected 2D area decreases with an increased flow.",
keywords = "Wastewater, Pumps, Image processing",
author = "Jensen, {Anna Lyhne} and Henrik S{\o}rensen and Rosendahl, {Lasse Aistrup} and Thamsen, {Paul Uwe}",
year = "2018",
doi = "10.1080/1573062X.2017.1414274",
language = "English",
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pages = "132--137",
journal = "Urban Water Journal",
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publisher = "Taylor & Francis",
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Characterisation of textile shape and position upstream of a wastewater pump under different part load conditions. / Jensen, Anna Lyhne; Sørensen, Henrik; Rosendahl, Lasse Aistrup; Thamsen, Paul Uwe.

In: Urban Water Journal, Vol. 15, No. 2, 2018, p. 132-137.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Characterisation of textile shape and position upstream of a wastewater pump under different part load conditions

AU - Jensen, Anna Lyhne

AU - Sørensen, Henrik

AU - Rosendahl, Lasse Aistrup

AU - Thamsen, Paul Uwe

PY - 2018

Y1 - 2018

N2 - Accumulations of sanitary textile materials often lead to clogging of pumps in the wastewater system. Simulation of clogging phenomena may help to identify means of reducing the risk of clogging. In order to provide realistic initial conditions for clogging simulations, this study characterises textiles in artificial wastewater in the suction pipe to a dry-installed pump at nine different operating points. The textiles are recorded approximately 3.5 pipe diameters from the pump inlet and approximately three pipe diameters from the suction pipe bend at pipe Reynolds numbers in the range 300,000–900,000. Parameters of position, orientation, elongation and projected two-dimensional (2D) area are extracted using image analysis. The resulting parameters from the different operating points are compared using analysis of variance. The results show that the position, orientation and elongation do not change significantly with the operating point, while the projected 2D area decreases with an increased flow.

AB - Accumulations of sanitary textile materials often lead to clogging of pumps in the wastewater system. Simulation of clogging phenomena may help to identify means of reducing the risk of clogging. In order to provide realistic initial conditions for clogging simulations, this study characterises textiles in artificial wastewater in the suction pipe to a dry-installed pump at nine different operating points. The textiles are recorded approximately 3.5 pipe diameters from the pump inlet and approximately three pipe diameters from the suction pipe bend at pipe Reynolds numbers in the range 300,000–900,000. Parameters of position, orientation, elongation and projected two-dimensional (2D) area are extracted using image analysis. The resulting parameters from the different operating points are compared using analysis of variance. The results show that the position, orientation and elongation do not change significantly with the operating point, while the projected 2D area decreases with an increased flow.

KW - Wastewater

KW - Pumps

KW - Image processing

U2 - 10.1080/1573062X.2017.1414274

DO - 10.1080/1573062X.2017.1414274

M3 - Journal article

VL - 15

SP - 132

EP - 137

JO - Urban Water Journal

JF - Urban Water Journal

SN - 1573-062X

IS - 2

ER -