Evaluation of Apparatus for Membrane Cleaning Tests

Membrane cleaning is critical to the operation of membrane processes. This paper studies the impact of using four different types of bench-scale membrane systems to assess the effectiveness of different cleaning steps after the filtration of colored river water. The systems are a stirred ultrafiltra...

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Bibliographic Details
Published inJournal of environmental engineering (New York, N.Y.) Vol. 136; no. 10; pp. 1161 - 1170
Main Authors Dang, Huyen T, Narbaitz, Roberto M, Matsuura, Takeshi
Format Journal Article
LanguageEnglish
Published Reston, VA American Society of Civil Engineers 01.10.2010
Subjects
Applied sciences
Continental surface waters
Exact sciences and technology
Natural water pollution
Pollution
TECHNICAL PAPERS
Water treatment and pollution
Water treatment
Surface modification
Membranes
Fouling
Filtration
Membrane cleaning
Solute resistance removal
Color
Flux recovery
Crossflow
Cleaning
Solutes
Contact angle
Rivers
Test apparatus
Membrane separation
Ultrafiltration
Chemical treatment
Stream
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Summary:Membrane cleaning is critical to the operation of membrane processes. This paper studies the impact of using four different types of bench-scale membrane systems to assess the effectiveness of different cleaning steps after the filtration of colored river water. The systems are a stirred ultrafiltration (UF) cell, a SEPA cell, a small cross-flow (CF) cell, and a six-CF-cell-in-parallel system. The effect of cleaning frequency was also investigated. The comparison was implemented in terms of flux recovery, solute removal, solute resistance removal, and changes of contact angles. The stirred UF cell was only reliable and comparable in terms of flux and flux recovery results. The six-cell-in-parallel system requires further development due to their much lower flux. For cleaning at 30-min intervals, the cleaning efficiency of membranes was similar for the three CF systems. For cleaning intervals of 2 and 4 h did not statistically affect the flux recovery for the stirred UF cell and SEPA cell. There was some irreversible fouling that could not be restored completely by clean-in-place method even with rigorous chemical treatment.
ISSN:0733-9372
1943-7870
DOI:10.1061/(ASCE)EE.1943-7870.0000254