Reverse osmosis desalination system and algal blooms part II

seawater intake technologies

Mohamed A. Darwish, Hassan K. Abdulrahim, Ashraf Hassan, Basem Shomar

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

While thermal desalination processes require minimum pretreatment (mainly screening and chemical additions to prevent scaling), seawater reverse osmosis (SWRO) desalination plants require extensive pretreatment of the feedwater before entering the membranes. As the Arabian Gulf (AG) countries depend on seawater desalination, there is a strategic decision to move gradually to SWRO desalination technologies. The algal bloom (AB) events that have happened in the AG countries raise more concerns about seawater pretreatment. A seawater intake is a key limiting factor and is a real part of pretreatment for high performance desalination process. This paper (second part of a series of three parts) reviews several intake options and their effects on the quality of feed seawater and the major parameters causing membrane fouling, especially bio-fouling. These include the concentrations of algae, bacteria, total organic carbon, particulate and colloidal transparent exopolymer particles (TEP), and the biopolymer fraction of natural organic carbon. Several forms of algal organic matter (AOM) are produced by ABs with varying concentrations and include intracellular organic matter formed due to autolysis consisting of proteins, nucleic acids, lipids and small molecules; and extracellular organic matter formed via metabolic excretion and composed mainly of exopolysaccharides. Being comparatively large macromolecules, exopolysaccharides are most often insoluble in water. A significant fraction of these exopolysaccharides, known as TEP, are highly surface-active, sticky, and play a significant role in the aggregation dynamics of algae during AB events. This paper reviews the different seawater intake technologies and highlights advantages and disadvantages of each. It aims at recommending the best intake technology for the site-specific conditions of a given desalination project.

Original languageEnglish
Pages (from-to)1-37
Number of pages37
JournalDesalination and Water Treatment
DOIs
Publication statusAccepted/In press - 13 Mar 2016

Fingerprint

Reverse osmosis
Desalination
Seawater
desalination
algal bloom
seawater
Biological materials
transparent exopolymer particle
Algae
Organic carbon
organic matter
alga
membrane
Biofouling
Membrane fouling
biofouling
Nucleic acids
Biopolymers
nucleic acid
reverse osmosis

Keywords

  • Arabian Gulf region
  • Biofouling
  • Membrane desalination
  • Seawater intake systems

ASJC Scopus subject areas

  • Pollution
  • Water Science and Technology
  • Ocean Engineering

Cite this

Reverse osmosis desalination system and algal blooms part II : seawater intake technologies. / Darwish, Mohamed A.; Abdulrahim, Hassan K.; Hassan, Ashraf; Shomar, Basem.

In: Desalination and Water Treatment, 13.03.2016, p. 1-37.

Research output: Contribution to journalArticle

@article{87f87f823a3f4fdcb191759a19c92d27,
title = "Reverse osmosis desalination system and algal blooms part II: seawater intake technologies",
abstract = "While thermal desalination processes require minimum pretreatment (mainly screening and chemical additions to prevent scaling), seawater reverse osmosis (SWRO) desalination plants require extensive pretreatment of the feedwater before entering the membranes. As the Arabian Gulf (AG) countries depend on seawater desalination, there is a strategic decision to move gradually to SWRO desalination technologies. The algal bloom (AB) events that have happened in the AG countries raise more concerns about seawater pretreatment. A seawater intake is a key limiting factor and is a real part of pretreatment for high performance desalination process. This paper (second part of a series of three parts) reviews several intake options and their effects on the quality of feed seawater and the major parameters causing membrane fouling, especially bio-fouling. These include the concentrations of algae, bacteria, total organic carbon, particulate and colloidal transparent exopolymer particles (TEP), and the biopolymer fraction of natural organic carbon. Several forms of algal organic matter (AOM) are produced by ABs with varying concentrations and include intracellular organic matter formed due to autolysis consisting of proteins, nucleic acids, lipids and small molecules; and extracellular organic matter formed via metabolic excretion and composed mainly of exopolysaccharides. Being comparatively large macromolecules, exopolysaccharides are most often insoluble in water. A significant fraction of these exopolysaccharides, known as TEP, are highly surface-active, sticky, and play a significant role in the aggregation dynamics of algae during AB events. This paper reviews the different seawater intake technologies and highlights advantages and disadvantages of each. It aims at recommending the best intake technology for the site-specific conditions of a given desalination project.",
keywords = "Arabian Gulf region, Biofouling, Membrane desalination, Seawater intake systems",
author = "Darwish, {Mohamed A.} and Abdulrahim, {Hassan K.} and Ashraf Hassan and Basem Shomar",
year = "2016",
month = "3",
day = "13",
doi = "10.1080/19443994.2016.1159619",
language = "English",
pages = "1--37",
journal = "Desalination and Water Treatment",
issn = "1944-3994",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - Reverse osmosis desalination system and algal blooms part II

T2 - seawater intake technologies

AU - Darwish, Mohamed A.

AU - Abdulrahim, Hassan K.

AU - Hassan, Ashraf

AU - Shomar, Basem

PY - 2016/3/13

Y1 - 2016/3/13

N2 - While thermal desalination processes require minimum pretreatment (mainly screening and chemical additions to prevent scaling), seawater reverse osmosis (SWRO) desalination plants require extensive pretreatment of the feedwater before entering the membranes. As the Arabian Gulf (AG) countries depend on seawater desalination, there is a strategic decision to move gradually to SWRO desalination technologies. The algal bloom (AB) events that have happened in the AG countries raise more concerns about seawater pretreatment. A seawater intake is a key limiting factor and is a real part of pretreatment for high performance desalination process. This paper (second part of a series of three parts) reviews several intake options and their effects on the quality of feed seawater and the major parameters causing membrane fouling, especially bio-fouling. These include the concentrations of algae, bacteria, total organic carbon, particulate and colloidal transparent exopolymer particles (TEP), and the biopolymer fraction of natural organic carbon. Several forms of algal organic matter (AOM) are produced by ABs with varying concentrations and include intracellular organic matter formed due to autolysis consisting of proteins, nucleic acids, lipids and small molecules; and extracellular organic matter formed via metabolic excretion and composed mainly of exopolysaccharides. Being comparatively large macromolecules, exopolysaccharides are most often insoluble in water. A significant fraction of these exopolysaccharides, known as TEP, are highly surface-active, sticky, and play a significant role in the aggregation dynamics of algae during AB events. This paper reviews the different seawater intake technologies and highlights advantages and disadvantages of each. It aims at recommending the best intake technology for the site-specific conditions of a given desalination project.

AB - While thermal desalination processes require minimum pretreatment (mainly screening and chemical additions to prevent scaling), seawater reverse osmosis (SWRO) desalination plants require extensive pretreatment of the feedwater before entering the membranes. As the Arabian Gulf (AG) countries depend on seawater desalination, there is a strategic decision to move gradually to SWRO desalination technologies. The algal bloom (AB) events that have happened in the AG countries raise more concerns about seawater pretreatment. A seawater intake is a key limiting factor and is a real part of pretreatment for high performance desalination process. This paper (second part of a series of three parts) reviews several intake options and their effects on the quality of feed seawater and the major parameters causing membrane fouling, especially bio-fouling. These include the concentrations of algae, bacteria, total organic carbon, particulate and colloidal transparent exopolymer particles (TEP), and the biopolymer fraction of natural organic carbon. Several forms of algal organic matter (AOM) are produced by ABs with varying concentrations and include intracellular organic matter formed due to autolysis consisting of proteins, nucleic acids, lipids and small molecules; and extracellular organic matter formed via metabolic excretion and composed mainly of exopolysaccharides. Being comparatively large macromolecules, exopolysaccharides are most often insoluble in water. A significant fraction of these exopolysaccharides, known as TEP, are highly surface-active, sticky, and play a significant role in the aggregation dynamics of algae during AB events. This paper reviews the different seawater intake technologies and highlights advantages and disadvantages of each. It aims at recommending the best intake technology for the site-specific conditions of a given desalination project.

KW - Arabian Gulf region

KW - Biofouling

KW - Membrane desalination

KW - Seawater intake systems

UR - http://www.scopus.com/inward/record.url?scp=84961391571&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84961391571&partnerID=8YFLogxK

U2 - 10.1080/19443994.2016.1159619

DO - 10.1080/19443994.2016.1159619

M3 - Article

SP - 1

EP - 37

JO - Desalination and Water Treatment

JF - Desalination and Water Treatment

SN - 1944-3994

ER -