ORIGINAL RESEARCH
Comparison of Flat-Sheet and Hollow-Fiber
Membrane Modules in Municipal Wastewater
Treatment
I. Bodík, A. Blšťáková, L. Dančová, S. Sedláček
Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology,
Slovak University of Technology Bratislava, Radlinského 9, 812-37 Bratislava, Slovak Republic
Pol. J. Environ. Stud. 2009;18(3):331–340
KEYWORDS
additional aerationdomestic wastewater treatment plantsnitrogen removalmembraneclogginglong-term operation
ABSTRACT
The aim of this study was to test membrane modules immersed in pilot-scale domestic WWTP and in
the aeration zone of the municipal WWTP Devínska Nová Ves - Bratislava. The first three phases were operated
long-term without the employment of additional aeration. The fourth and fifth phases were operated with
the employment of additional aeration applied as membrane cleaning in order to prevent the membrane from
clogging. The operation of flat-sheet and hollow-fiber membrane modules showed similar results in permeate
characteristics. Membrane modules were able to remove organic matter (as much as 92%) and more than 98%
of NH4-N in the long-term operation without activated sludge removal.
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