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Membranes 2017, 7(2), 20; doi:10.3390/membranes7020020

Performance of Hybrid Photocatalytic-Ceramic Membrane System for the Treatment of Secondary Effluent

1
Institute for Sustainability and Innovation, College of Engineering and Science, Victoria University, PO Box 14428, Melbourne, VIC 8001, Australia
2
College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310032, China
*
Author to whom correspondence should be addressed.
Academic Editors: Javier Miguel Ochando-Pulido and Marco Stoller
Received: 29 November 2016 / Revised: 15 February 2017 / Accepted: 15 March 2017 / Published: 28 March 2017
(This article belongs to the Special Issue Membranes and Water Treatment 2016)
View Full-Text   |   Download PDF [2240 KB, uploaded 28 March 2017]   |  

Abstract

Evaluation of an advanced wastewater treatment system that combines photocatalysis with ceramic membrane filtration for the treatment of secondary effluent was undertaken. The results showed that, after photocatalysis and ceramic membrane filtration, the removal of dissolved organic carbon and UV254 was 60% and 54%, respectively, at a concentration of 4 g/L of TiO2. Dissolved organic matter (DOM) present in the secondary effluent was characterised with a liquid chromatography-organic carbon detector (LC-OCD) technique. The results showed low removal of humics, building blocks, the other oxidation by-products and no removal of biopolymers after TiO2/UV photocatalytic treatment. This suggested that the radical non-selective oxidation mechanisms of TiO2/UV process resulted in secondary effluent in which all of the DOM fractions were present. However, the hybrid system was effective for removing biopolymers with the exception of low molecular weight (LMW) compounds acids, which accumulated from the beginning of the reaction. In addition, monitoring of the DOM fractions with LC-OCD analysis demonstrated that the reduction of the effluent aromaticity was not firmly correlated with the removal of humic substances for the combined processes. View Full-Text
Keywords: ceramic membrane; photocatalysis; secondary effluent; fouling; size exclusion chromatography ceramic membrane; photocatalysis; secondary effluent; fouling; size exclusion chromatography
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Song, L.; Zhu, B.; Gray, S.; Duke, M.; Muthukumaran, S. Performance of Hybrid Photocatalytic-Ceramic Membrane System for the Treatment of Secondary Effluent. Membranes 2017, 7, 20.

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