Evaluation of a low-pressure membrane filtration for drinking water treatment: pretreatment by coagulation/sedimentation for the MF membrane

Jihee Moon, Moon S. Kang, Jae L. Lim, Choong Hwan Kim, Hee-Deung Park

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The immersed microfiltration (MF) membrane system combined with coagulation and sedimentation as a pretreatment was evaluated with respect to membrane flux, dissolved organic matter (DOM) removal, and the influence on membrane fouling properties. The pretreatment-combined membrane system demonstrates better performance in water production and DOM control than the direct filtration system without pretreatment. The pretreatment with coagulation and sedimentation improved the membrane performance for a sudden increase of solid loading and severe fluctuation of source water properties: in particular, the sedimentation step exhibited the capability of buffering the sudden shock of solid loading to the membrane, resulting in maintaining the stable flux and transmembrane pressure (TMP) in the membrane filtration. Even though pretreatment improved membrane performance, somewhat serious fouling was observed in the membrane due to the residual coagulant. The aluminum-based coagulant formed an inorganic scale with the silica originated from the source water, and then this inorganic scale was expected to accumulate in the membrane and promote severe organic fouling. Thus, the residual aluminum-based coagulant should be controlled to reduce membrane fouling in order to develop an improved system operation and an improved process design for the proposed system.

Original languageEnglish
Pages (from-to)271-284
Number of pages14
JournalDesalination
Volume247
Issue number1-3
DOIs
Publication statusPublished - 2009 Oct 1

Fingerprint

Microfiltration
Coagulation
Water treatment
Sedimentation
Potable water
Drinking Water
coagulation
low pressure
sedimentation
membrane
Membranes
Coagulants
fouling
Membrane fouling
Fouling
Aluminum
Biological materials
Water
dissolved organic matter
Fluxes

Keywords

  • Aluminum-based coagulant
  • Coagulation
  • Fouling
  • Immersed microfiltration
  • Sedimentation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)
  • Mechanical Engineering
  • Water Science and Technology
  • Materials Science(all)

Cite this

Evaluation of a low-pressure membrane filtration for drinking water treatment : pretreatment by coagulation/sedimentation for the MF membrane. / Moon, Jihee; Kang, Moon S.; Lim, Jae L.; Kim, Choong Hwan; Park, Hee-Deung.

In: Desalination, Vol. 247, No. 1-3, 01.10.2009, p. 271-284.

Research output: Contribution to journalArticle

@article{09f47ed5796c49aca6d43236c0726c3c,
title = "Evaluation of a low-pressure membrane filtration for drinking water treatment: pretreatment by coagulation/sedimentation for the MF membrane",
abstract = "The immersed microfiltration (MF) membrane system combined with coagulation and sedimentation as a pretreatment was evaluated with respect to membrane flux, dissolved organic matter (DOM) removal, and the influence on membrane fouling properties. The pretreatment-combined membrane system demonstrates better performance in water production and DOM control than the direct filtration system without pretreatment. The pretreatment with coagulation and sedimentation improved the membrane performance for a sudden increase of solid loading and severe fluctuation of source water properties: in particular, the sedimentation step exhibited the capability of buffering the sudden shock of solid loading to the membrane, resulting in maintaining the stable flux and transmembrane pressure (TMP) in the membrane filtration. Even though pretreatment improved membrane performance, somewhat serious fouling was observed in the membrane due to the residual coagulant. The aluminum-based coagulant formed an inorganic scale with the silica originated from the source water, and then this inorganic scale was expected to accumulate in the membrane and promote severe organic fouling. Thus, the residual aluminum-based coagulant should be controlled to reduce membrane fouling in order to develop an improved system operation and an improved process design for the proposed system.",
keywords = "Aluminum-based coagulant, Coagulation, Fouling, Immersed microfiltration, Sedimentation",
author = "Jihee Moon and Kang, {Moon S.} and Lim, {Jae L.} and Kim, {Choong Hwan} and Hee-Deung Park",
year = "2009",
month = "10",
day = "1",
doi = "10.1016/j.desal.2008.12.030",
language = "English",
volume = "247",
pages = "271--284",
journal = "Desalination",
issn = "0011-9164",
publisher = "Elsevier",
number = "1-3",

}

TY - JOUR

T1 - Evaluation of a low-pressure membrane filtration for drinking water treatment

T2 - pretreatment by coagulation/sedimentation for the MF membrane

AU - Moon, Jihee

AU - Kang, Moon S.

AU - Lim, Jae L.

AU - Kim, Choong Hwan

AU - Park, Hee-Deung

PY - 2009/10/1

Y1 - 2009/10/1

N2 - The immersed microfiltration (MF) membrane system combined with coagulation and sedimentation as a pretreatment was evaluated with respect to membrane flux, dissolved organic matter (DOM) removal, and the influence on membrane fouling properties. The pretreatment-combined membrane system demonstrates better performance in water production and DOM control than the direct filtration system without pretreatment. The pretreatment with coagulation and sedimentation improved the membrane performance for a sudden increase of solid loading and severe fluctuation of source water properties: in particular, the sedimentation step exhibited the capability of buffering the sudden shock of solid loading to the membrane, resulting in maintaining the stable flux and transmembrane pressure (TMP) in the membrane filtration. Even though pretreatment improved membrane performance, somewhat serious fouling was observed in the membrane due to the residual coagulant. The aluminum-based coagulant formed an inorganic scale with the silica originated from the source water, and then this inorganic scale was expected to accumulate in the membrane and promote severe organic fouling. Thus, the residual aluminum-based coagulant should be controlled to reduce membrane fouling in order to develop an improved system operation and an improved process design for the proposed system.

AB - The immersed microfiltration (MF) membrane system combined with coagulation and sedimentation as a pretreatment was evaluated with respect to membrane flux, dissolved organic matter (DOM) removal, and the influence on membrane fouling properties. The pretreatment-combined membrane system demonstrates better performance in water production and DOM control than the direct filtration system without pretreatment. The pretreatment with coagulation and sedimentation improved the membrane performance for a sudden increase of solid loading and severe fluctuation of source water properties: in particular, the sedimentation step exhibited the capability of buffering the sudden shock of solid loading to the membrane, resulting in maintaining the stable flux and transmembrane pressure (TMP) in the membrane filtration. Even though pretreatment improved membrane performance, somewhat serious fouling was observed in the membrane due to the residual coagulant. The aluminum-based coagulant formed an inorganic scale with the silica originated from the source water, and then this inorganic scale was expected to accumulate in the membrane and promote severe organic fouling. Thus, the residual aluminum-based coagulant should be controlled to reduce membrane fouling in order to develop an improved system operation and an improved process design for the proposed system.

KW - Aluminum-based coagulant

KW - Coagulation

KW - Fouling

KW - Immersed microfiltration

KW - Sedimentation

UR - http://www.scopus.com/inward/record.url?scp=69549122148&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=69549122148&partnerID=8YFLogxK

U2 - 10.1016/j.desal.2008.12.030

DO - 10.1016/j.desal.2008.12.030

M3 - Article

AN - SCOPUS:69549122148

VL - 247

SP - 271

EP - 284

JO - Desalination

JF - Desalination

SN - 0011-9164

IS - 1-3

ER -