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

45 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
Pages (from-to)804-811
Number of pages8
JournalCanadian Geotechnical Journal
Volume42
Issue number3
DOIs
Publication statusPublished - 2005 Jun

Keywords

  • Clogging
  • Constant
  • Filter
  • Flow
  • Head
  • Particle

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Geotechnical Engineering and Engineering Geology

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