Desalination pretreatment of recycled water using oxidation and ceramic microfiltration processes

Myat, D, Roddick, F, Puspita, P, Halliwell, D, Roeszler, G, Chan, A, Arabatzoudis, C, Kristiana, I, Charrois, J, Zhu, B, Muthukumaran, S and Duke, M 2014, 'Desalination pretreatment of recycled water using oxidation and ceramic microfiltration processes', in David Sheehan, Pat Feehan (ed.) Proceedings of the 2014 Ozwater'14 Conference, Australia's International Water Conference and Exhibition, Queensland, Australia, 29 April - 1 May 2014, pp. 1-6.


Document type: Conference Paper
Collection: Conference Papers

Title Desalination pretreatment of recycled water using oxidation and ceramic microfiltration processes
Author(s) Myat, D
Roddick, F
Puspita, P
Halliwell, D
Roeszler, G
Chan, A
Arabatzoudis, C
Kristiana, I
Charrois, J
Zhu, B
Muthukumaran, S
Duke, M
Year 2014
Conference name Ozwater'14
Conference location Queensland, Australia
Conference dates 29 April - 1 May 2014
Proceedings title Proceedings of the 2014 Ozwater'14 Conference, Australia's International Water Conference and Exhibition
Editor(s) David Sheehan, Pat Feehan
Publisher Australian Water Association
Place of publication New South Wales, Australia
Start page 1
End page 6
Total pages 6
Abstract The use of ceramic membranes as an alternative to polymeric membranes has gained interest in water/wastewater treatment due to their superior life, durability and integrity. However application for saline wastewater desalination pre-treatment is little understood. Testing on saline recycled water found that treating it first with ozone or ultraviolet/hydrogen peroxide (UVH) combined with coagulation led to high ceramic membrane flux potential due to the minimal trans membrane pressure (TMP) rise at 130 L/m2/h. But the use of ozone or UVH increased the biodegradable fraction of the organics suggesting higher biofouling potential of downstream reverse osmosis (RO) membranes. RO fouling propensity was similar for all pre-treatment combinations, but coagulation (alone or with ozone or UVH) showed superior RO membrane fouling reversibility. As chloramine is commonly used to mitigate RO biofouling, its well known disinfection byproduct due to chloramination, N-nitrosodimethylamine (NDMA), was measured after chloramine dosing for the various ceramic pre-treatment conditions. NDMA was not found to increase more for the ozone or UVH treated water. In conclusion, high flux and durable ceramic membranes appear suitable for RO pre-treatment in saline recycled water desalination, but further studies on biofouling are needed.
Subjects Membrane and Separation Technologies
Wastewater Treatment Processes
Copyright notice © 2014 Australian Water Association
ISBN 9781921335228
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