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Performance of biological ion exchange resin and gravity-driven ceramic membrance hybrid process for surface water treatment

Yaser Rasouli, Raphaël Maltais-Tariant, Benoit Barbeau, Sigrid Peldszus, Caroline Boudoux and Dominique Claveau-Mallet

Article (2024)

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Abstract

In this study, the performance of a biological ion exchange (BIEX) resin and gravity-driven ceramic membrane (GDCM) filtration hybrid process in terms of membrane permeate quality, flux, and membrane biofilm characteristics during river water treatment for drinking water was investigated. The hybrid process results were compared with those of the GDCM process without the BIEX pre-treatment. Three types of previously synthesized microfiltration membranes were used: M1 (100 wt% kaolin), M2 (75 wt% kaolin + 25 wt% alumina), M3 (50 wt% kaolin + 50 wt% alumina), and M4 (commercial ceramic microfiltration membrane). In terms of permeate quality, the BIEX column removed approximately 74 % of the dissolved organic carbon (DOC) compared with the influent water, followed by 27 % DOC removal using M3 compared with the BIEX column effluent on day 65 (6,240 BV), which was mainly due to the removal of humic and fulvic acids. BIEX removed turbidity of the influent water from 2.20 NTU to 0.77 NTU, which was further decreased to 0.09 NTU by membranes. The maximum stabilized flux of the membranes was approximately 5.7 LMH, which was almost doubled compared to GDCM without pre-treatment. The membrane biofilm showed lower thickness and roughness in the hybrid process than that in GDCM without pre-treatment. Higher extracellular polymeric substance (EPS) concentration and biological activity were observed for M3, the membrane with the highest stabilized flux and highest DOC removal efficiency. The results indicate that the hybrid BIEX + GDCM is a robust, high-performance, and easy-to-use process that can increase the flux and permeate quality of GDCM systems.

Uncontrolled Keywords

biological ion exchange; natural organic matter; membrane filtration; ceramic membranes; biofilm characterization

Subjects: 1500 Environmental engineering > 1500 Environmental engineering
1500 Environmental engineering > 1501 Water quality, pollution
1500 Environmental engineering > 1502 Waste water treatment
Department: Department of Engineering Physics
Department of Civil, Geological and Mining Engineering
Research Center: Other
Funders: Canada Research Chair for Decentralized and Small-Scale Water Treatment
Grant number: 950-232871
PolyPublie URL: https://publications.polymtl.ca/56780/
Journal Title: Separation and Purification Technology (vol. 332)
Publisher: Elsevier
DOI: 10.1016/j.seppur.2023.125769
Official URL: https://doi.org/10.1016/j.seppur.2023.125769
Date Deposited: 14 Dec 2023 13:08
Last Modified: 11 Apr 2024 15:52
Cite in APA 7: Rasouli, Y., Maltais-Tariant, R., Barbeau, B., Peldszus, S., Boudoux, C., & Claveau-Mallet, D. (2024). Performance of biological ion exchange resin and gravity-driven ceramic membrance hybrid process for surface water treatment. Separation and Purification Technology, 332, 125769 (14 pages). https://doi.org/10.1016/j.seppur.2023.125769

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