Physical clogging of soil filters under constant flow rate versus constant head

Lakshmi N. Reddi, Ming Xiao, Malay G. Hajra, In Mo Lee

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

In this study, the differences in soil filter clogging are evaluated under two operating conditions: constant head and constant flow rate. Whereas filters placed around well screens and leachate collection systems are subjected to a constant flow rate, filters in earth dams and pavement drainage systems operate under constant or slightly varying heads. In this study, the experiments revealed similar permeability reductions with respect to time in both cases; however, the permeability reduction under the condition of constant head occurred in much fewer pore volumes than under the condition of constant flow rate. Self-filtration appeared to be greater under the condition of constant head. The physical clogging model developed for the conditions of constant flow rate and constant head showed good qualitative agreement with experimental observations.

Original languageEnglish (US)
Pages (from-to)804-811
Number of pages8
JournalCanadian Geotechnical Journal
Volume42
Issue number3
DOIs
StatePublished - Jun 1 2005

Fingerprint

Flow rate
filter
Soils
soil
permeability
Embankment dams
earth dam
pavement
Pavements
Drainage
leachate
rate
experiment
Experiments

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering

Cite this

Reddi, Lakshmi N. ; Xiao, Ming ; Hajra, Malay G. ; Lee, In Mo. / Physical clogging of soil filters under constant flow rate versus constant head. In: Canadian Geotechnical Journal. 2005 ; Vol. 42, No. 3. pp. 804-811.
@article{55d32b3efeb44b8abbad151ab7d76beb,
title = "Physical clogging of soil filters under constant flow rate versus constant head",
abstract = "In this study, the differences in soil filter clogging are evaluated under two operating conditions: constant head and constant flow rate. Whereas filters placed around well screens and leachate collection systems are subjected to a constant flow rate, filters in earth dams and pavement drainage systems operate under constant or slightly varying heads. In this study, the experiments revealed similar permeability reductions with respect to time in both cases; however, the permeability reduction under the condition of constant head occurred in much fewer pore volumes than under the condition of constant flow rate. Self-filtration appeared to be greater under the condition of constant head. The physical clogging model developed for the conditions of constant flow rate and constant head showed good qualitative agreement with experimental observations.",
author = "Reddi, {Lakshmi N.} and Ming Xiao and Hajra, {Malay G.} and Lee, {In Mo}",
year = "2005",
month = "6",
day = "1",
doi = "10.1139/t05-018",
language = "English (US)",
volume = "42",
pages = "804--811",
journal = "Canadian Geotechnical Journal",
issn = "0008-3674",
publisher = "National Research Council of Canada",
number = "3",

}

Physical clogging of soil filters under constant flow rate versus constant head. / Reddi, Lakshmi N.; Xiao, Ming; Hajra, Malay G.; Lee, In Mo.

In: Canadian Geotechnical Journal, Vol. 42, No. 3, 01.06.2005, p. 804-811.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Physical clogging of soil filters under constant flow rate versus constant head

AU - Reddi, Lakshmi N.

AU - Xiao, Ming

AU - Hajra, Malay G.

AU - Lee, In Mo

PY - 2005/6/1

Y1 - 2005/6/1

N2 - In this study, the differences in soil filter clogging are evaluated under two operating conditions: constant head and constant flow rate. Whereas filters placed around well screens and leachate collection systems are subjected to a constant flow rate, filters in earth dams and pavement drainage systems operate under constant or slightly varying heads. In this study, the experiments revealed similar permeability reductions with respect to time in both cases; however, the permeability reduction under the condition of constant head occurred in much fewer pore volumes than under the condition of constant flow rate. Self-filtration appeared to be greater under the condition of constant head. The physical clogging model developed for the conditions of constant flow rate and constant head showed good qualitative agreement with experimental observations.

AB - In this study, the differences in soil filter clogging are evaluated under two operating conditions: constant head and constant flow rate. Whereas filters placed around well screens and leachate collection systems are subjected to a constant flow rate, filters in earth dams and pavement drainage systems operate under constant or slightly varying heads. In this study, the experiments revealed similar permeability reductions with respect to time in both cases; however, the permeability reduction under the condition of constant head occurred in much fewer pore volumes than under the condition of constant flow rate. Self-filtration appeared to be greater under the condition of constant head. The physical clogging model developed for the conditions of constant flow rate and constant head showed good qualitative agreement with experimental observations.

UR - http://www.scopus.com/inward/record.url?scp=27144445857&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=27144445857&partnerID=8YFLogxK

U2 - 10.1139/t05-018

DO - 10.1139/t05-018

M3 - Article

AN - SCOPUS:27144445857

VL - 42

SP - 804

EP - 811

JO - Canadian Geotechnical Journal

JF - Canadian Geotechnical Journal

SN - 0008-3674

IS - 3

ER -