Changes in feedwater organic matter concentrations based on intake type and pretreatment processes at SWRO facilities, Red Sea, Saudi Arabia

Handle URI:
http://hdl.handle.net/10754/564085
Title:
Changes in feedwater organic matter concentrations based on intake type and pretreatment processes at SWRO facilities, Red Sea, Saudi Arabia
Authors:
Dehwah, Abdullah; Li, Sheng; Almashharawi, Samir; Winters, Harvey; Missimer, Thomas M.
Abstract:
Transparent exopolymer particles (TEP), natural organic matter, and bacterial concentrations in feedwater are important factors that can lead to membrane biofouling in seawater reverse osmosis (SWRO) systems. Two methods for controlling these concentrations in the feedwater prior to pretreatment have been suggested; use of subsurface intake systems or placement of the intake at a greater depth in the sea. These proposed solutions were tested at two SWRO facilities located along the Red Sea of Saudi Arabia. A shallow well intake system was very effective in reducing the algae and bacterial concentrations and somewhat effective in reducing TEP concentrations. An intake placed at a depth of 9. m below the surface was found to have limited impact on improving water quality compared to a surface intake. The algae and bacteria concentration in the feedwater (deep) was lower compared to the surface seawater, but the overall TEP concentration was higher. Bacteria and TEP measurements made in the pretreatment process train in the plant and after the cartridge filters suggest that regrowth of bacteria is occurring within the cartridge filters.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Water Desalination and Reuse Research Center; Environmental Science and Engineering Program
Publisher:
Elsevier BV
Journal:
Desalination
Issue Date:
Mar-2015
DOI:
10.1016/j.desal.2015.01.008
Type:
Article
ISSN:
00119164
Sponsors:
Funding for this research was provided by the Water Desalination and Water Reuse Center at King Abdullah University of Science and Technology. The authors thank the ownership and staff at the Moya Bushnak Company for access to the two SWRO facilities and engineers Mr. Ashraf Kawari and Mr. Mohamed Arfin for allowing facility access and giving water sampling assistance. Thanks are also extended to Mr. Khaled Bin Bandar, who gave field support and Mr. Najmuddin Malek, the manager of site A, who granted us access to the facility.
Appears in Collections:
Articles; Environmental Science and Engineering Program; Water Desalination and Reuse Research Center (WDRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorDehwah, Abdullahen
dc.contributor.authorLi, Shengen
dc.contributor.authorAlmashharawi, Samiren
dc.contributor.authorWinters, Harveyen
dc.contributor.authorMissimer, Thomas M.en
dc.date.accessioned2015-08-03T12:31:27Zen
dc.date.available2015-08-03T12:31:27Zen
dc.date.issued2015-03en
dc.identifier.issn00119164en
dc.identifier.doi10.1016/j.desal.2015.01.008en
dc.identifier.urihttp://hdl.handle.net/10754/564085en
dc.description.abstractTransparent exopolymer particles (TEP), natural organic matter, and bacterial concentrations in feedwater are important factors that can lead to membrane biofouling in seawater reverse osmosis (SWRO) systems. Two methods for controlling these concentrations in the feedwater prior to pretreatment have been suggested; use of subsurface intake systems or placement of the intake at a greater depth in the sea. These proposed solutions were tested at two SWRO facilities located along the Red Sea of Saudi Arabia. A shallow well intake system was very effective in reducing the algae and bacterial concentrations and somewhat effective in reducing TEP concentrations. An intake placed at a depth of 9. m below the surface was found to have limited impact on improving water quality compared to a surface intake. The algae and bacteria concentration in the feedwater (deep) was lower compared to the surface seawater, but the overall TEP concentration was higher. Bacteria and TEP measurements made in the pretreatment process train in the plant and after the cartridge filters suggest that regrowth of bacteria is occurring within the cartridge filters.en
dc.description.sponsorshipFunding for this research was provided by the Water Desalination and Water Reuse Center at King Abdullah University of Science and Technology. The authors thank the ownership and staff at the Moya Bushnak Company for access to the two SWRO facilities and engineers Mr. Ashraf Kawari and Mr. Mohamed Arfin for allowing facility access and giving water sampling assistance. Thanks are also extended to Mr. Khaled Bin Bandar, who gave field support and Mr. Najmuddin Malek, the manager of site A, who granted us access to the facility.en
dc.publisherElsevier BVen
dc.subjectDeep-water intakesen
dc.subjectNatural organic matteren
dc.subjectSeawater reverse osmosisen
dc.subjectTransparent exopolymer particlesen
dc.subjectWell intakesen
dc.titleChanges in feedwater organic matter concentrations based on intake type and pretreatment processes at SWRO facilities, Red Sea, Saudi Arabiaen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentWater Desalination and Reuse Research Centeren
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.identifier.journalDesalinationen
dc.contributor.institutionFairleigh Dickinson University, Natural ResourcesTeaneck, NJ, United Statesen
dc.contributor.institutionNanyang Technological University, Singapore Membrane Technology Center, Singaporeen
dc.contributor.institutionU. A. Whitaker College of Engineering, Florida Gulf Coast University, 10501 FGCU Boulevard SouthFort Myers, FL, United Statesen
kaust.authorDehwah, Abdullahen
kaust.authorAlmashharawi, Samiren
kaust.authorLi, Shengen
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