How different is the composition of the fouling layer of wastewater reuse and seawater desalination RO membranes?
Molina, Verónica García
Emwas, Abdul-Hamid M.
KAUST DepartmentWater Desalination and Reuse Research Center (WDRC)
Advanced Nanofabrication, Imaging and Characterization Core Lab
Biological and Environmental Sciences and Engineering (BESE) Division
Water Desalination & Reuse Research Cntr
Permanent link to this recordhttp://hdl.handle.net/10754/563669
MetadataShow full item record
AbstractTo study the effect of water quality and operating parameters on membrane fouling, a comparative analysis of wastewater (WW) and seawater (SW) fouled reverse osmosis (RO) membranes was conducted. Membranes were harvested from SWRO and WWRO pilot plants located in Vilaseca (East Spain), both using ultrafiltration as pretreatment. The SWRO unit was fed with Mediterranean seawater and the WWRO unit was operated using secondary effluent collected from the municipal wastewater treatment plant. Lead and terminal SWRO and WWRO modules were autopsied after five months and three months of operation, respectively. Ultrastructural, chemical, and microbiological analyses of the fouling layers were performed. Results showed that the WWRO train had mainly bio/organic fouling at the lead position element and inorganic fouling at terminal position element, whereas SWRO train had bio/organic fouling at both end position elements. In the case of WWRO membranes, Betaproteobacteria was the major colonizing species; while Ca, S, and P were the major present inorganic elements. The microbial population of SWRO membranes was mainly represented by Alpha and Gammaproteobacteria. Ca, Fe, and S were the main identified inorganic elements of the fouling layer of SWRO membranes. These results confirmed that the RO fouling layer composition is strongly impacted by the source water quality. © 2014 Elsevier Ltd.
SponsorsWe thank Carmem Lara de O. Manes who was hired as consultant to interpret the pyrosequencing data. We also thank KAUST Analytical Core Lab for ICP-OES and CHNS analysis. Additionally, authors thankfully acknowledge the support received from KAUST WDRC lab staff. All the funds for this work were provided by King Abdullah University of Science and Technology (KAUST).
- Investigation of seawater reverse osmosis fouling and its relationship to pretreatment type.
- Authors: Kumar M, Adham SS, Pearce WR
- Issue date: 2006 Mar 15
- Effect of membrane bioreactor solids retention time on reverse osmosis membrane fouling for wastewater reuse.
- Authors: Farias EL, Howe KJ, Thomson BM
- Issue date: 2014 Feb 1
- Does chlorination of seawater reverse osmosis membranes control biofouling?
- Authors: Khan MT, Hong PY, Nada N, Croue JP
- Issue date: 2015 Jul 1
- Combined coagulation-disk filtration process as a pretreatment of ultrafiltration and reverse osmosis membrane for wastewater reclamation: an autopsy study of a pilot plant.
- Authors: Chon K, Kim SJ, Moon J, Cho J
- Issue date: 2012 Apr 15
- High performance RO membranes for desalination and wastewater reclamation and their operation results.
- Authors: Henmi M, Fusaoka Y, Tomioka H, Kurihara M
- Issue date: 2010