Seawater reverse osmosis desalination and (harmful) algal blooms

Handle URI:
http://hdl.handle.net/10754/566163
Title:
Seawater reverse osmosis desalination and (harmful) algal blooms
Authors:
Villacorte, Loreen O.; Tabatabai, S. Assiyeh Alizadeh ( 0000-0002-4997-3861 ) ; Anderson, Donald M.; Amy, Gary L.; Schippers, Jan Cornelis; Kennedy, Maria Dolores
Abstract:
This article reviews the occurrence of HABs in seawater, their effects on the operation of seawater reverse osmosis (SWRO) plants, the indicators for quantifying/predicting these effects, and the pretreatment strategies for mitigating operational issues during algal blooms. The potential issues in SWRO plants during HABs are particulate/organic fouling of pretreatment systems and biological fouling of RO membranes, mainly due to accumulation of algal organic matter (AOM). The presence of HAB toxins in desalinated water is also a potential concern but only at very low concentrations. Monitoring algal cell density, AOM concentrations and membrane fouling indices is a promising approach to assess the quality of SWRO feedwater and performance of the pretreatment system. When geological condition is favourable, subsurface intake can be a robust pretreatment for SWRO during HABs. Existing SWRO plants with open intake and are fitted with granular media filtration can improve performance in terms of capacity and product water quality, if preceded by dissolved air flotation or sedimentation. However, the application of advanced pretreatment using ultrafiltration membrane with in-line coagulation is often a better option as it is capable of maintaining stable operation and better RO feed water quality during algal bloom periods with significantly lower chemical consumption.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC)
Publisher:
Elsevier BV
Journal:
Desalination
Issue Date:
Mar-2015
DOI:
10.1016/j.desal.2015.01.007
Type:
Article
ISSN:
00119164
Sponsors:
This study was conducted with the financial support of UNESCO-IHE Institute for Water Education, Wetsus Centre of Excellence for Sustainable Water Technology and Water Desalination and Reuse Center (KAUST, Saudi Arabia). Support for D. M. Anderson was provided through the Woods Hole Center for Oceans and Human Health, National Science Foundation Grant OCE-1314642 and National Institute of Environmental Health Sciences Grant 1-P01-ES021923-01.
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorVillacorte, Loreen O.en
dc.contributor.authorTabatabai, S. Assiyeh Alizadehen
dc.contributor.authorAnderson, Donald M.en
dc.contributor.authorAmy, Gary L.en
dc.contributor.authorSchippers, Jan Cornelisen
dc.contributor.authorKennedy, Maria Doloresen
dc.date.accessioned2015-08-12T09:30:40Zen
dc.date.available2015-08-12T09:30:40Zen
dc.date.issued2015-03en
dc.identifier.issn00119164en
dc.identifier.doi10.1016/j.desal.2015.01.007en
dc.identifier.urihttp://hdl.handle.net/10754/566163en
dc.description.abstractThis article reviews the occurrence of HABs in seawater, their effects on the operation of seawater reverse osmosis (SWRO) plants, the indicators for quantifying/predicting these effects, and the pretreatment strategies for mitigating operational issues during algal blooms. The potential issues in SWRO plants during HABs are particulate/organic fouling of pretreatment systems and biological fouling of RO membranes, mainly due to accumulation of algal organic matter (AOM). The presence of HAB toxins in desalinated water is also a potential concern but only at very low concentrations. Monitoring algal cell density, AOM concentrations and membrane fouling indices is a promising approach to assess the quality of SWRO feedwater and performance of the pretreatment system. When geological condition is favourable, subsurface intake can be a robust pretreatment for SWRO during HABs. Existing SWRO plants with open intake and are fitted with granular media filtration can improve performance in terms of capacity and product water quality, if preceded by dissolved air flotation or sedimentation. However, the application of advanced pretreatment using ultrafiltration membrane with in-line coagulation is often a better option as it is capable of maintaining stable operation and better RO feed water quality during algal bloom periods with significantly lower chemical consumption.en
dc.description.sponsorshipThis study was conducted with the financial support of UNESCO-IHE Institute for Water Education, Wetsus Centre of Excellence for Sustainable Water Technology and Water Desalination and Reuse Center (KAUST, Saudi Arabia). Support for D. M. Anderson was provided through the Woods Hole Center for Oceans and Human Health, National Science Foundation Grant OCE-1314642 and National Institute of Environmental Health Sciences Grant 1-P01-ES021923-01.en
dc.publisherElsevier BVen
dc.subjectCoagulationen
dc.subjectHarmful algal blooms (HABs)en
dc.subjectPretreatmenten
dc.subjectSeawater reverse osmosis (SWRO)en
dc.subjectSubsurface intakeen
dc.subjectUltrafiltration (UF)en
dc.titleSeawater reverse osmosis desalination and (harmful) algal bloomsen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.identifier.journalDesalinationen
dc.contributor.institutionUNESCO-IHE Institute for Water Education, Westvest 7AX Delft, Netherlandsen
dc.contributor.institutionWetsus Center of Excellence for Sustainable Water Technology, Agora 1CJ Leeuwarden, Netherlandsen
dc.contributor.institutionBiology Department, Woods Hole Oceanographic InstitutionWoods Hole, MA, United Statesen
dc.contributor.institutionDepartment of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1CN Delft, 2628, Netherlandsen
kaust.authorTabatabai, S. Assiyeh Alizadehen
kaust.authorAmy, Gary L.en
All Items in KAUST are protected by copyright, with all rights reserved, unless otherwise indicated.