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Cho, Jaeweon
도시환경 감각연구소/Sense Laboratory
Research Interests
  • Convergence of Science and Arts; Environment Ethics; Meta-modernism in Semantics Engineering

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Role of coagulation in membrane filtration of wastewater for reuse

Cited 25 times inthomson ciCited 28 times inthomson ci
Title
Role of coagulation in membrane filtration of wastewater for reuse
Author
Kim, SHMoon, SYYoon, CHYim, SKCho, JW
Keywords
Coagulation pretreatment; Particle size; Ultrafiltration; Wastewater reuse
Issue Date
2005-03
Publisher
ELSEVIER SCIENCE BV
Citation
DESALINATION, v.173, no.3, pp.301 - 307
Abstract
This study explains the role of coagulation in membrane filtration of wastewater for reuse. For this purpose, a coagulation-ultrafiltration (UF) membrane system was used to treat secondary effluent from a nearby wastewater treatment plant using a rotating biological contactor. The study proceeded with the hypothesis that coagulation could affect membrane filtration through two phenomena: change in particle characteristics and contaminant loading reduction. If fouling reduction were observed at a low alum dosage, coagulation would affect membrane performance by changing particle characteristics because contaminant reduction could not be possible at low dosage. If fouling reduction were observed only at a high alum dosage, the role of coagulation would be contaminant loading reduction. Results showed that both phenomena were important. Coagulation improved the membrane performance by changing particle characteristics at a low alum dosage. The improvement was achieved through both a change in particle characteristics and contaminant loading reduction at a high alum dosage. Particle size among various characteristics was found the most important for membrane fouling. Coagulation increased particle size, which led to a reduction of fouling. The beneficial effect from coagulation was observed at both fouling steps of pore blocking/adsorption and cake formation. Coagulation pretreatment was also beneficial for the improvement of the permeate quality in terms of organic matter
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DOI
10.1016/j.desal.2004.08.036
ISSN
0011-9164
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UEE_Journal Papers
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