TY - JOUR
T1 - Fouling control in SWRO desalination during harmful algal blooms
T2 - A historical review and future developments
AU - Alayande, Abayomi Babatunde
AU - Lim, Jihun
AU - Kim, Jungbin
AU - Hong, Seungkwan
AU - Al-Amoudi, Ahmed Saleh
AU - Park, Byungsung
N1 - Funding Information:
This work was supported by the Korea Environmental Industry and Technology Institute (KEITI) through the Industrial Facilities & Infrastructure Research Program funded by the Korea Ministry of Environment (MOE) ( 116953 ).
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/12/1
Y1 - 2022/12/1
N2 - Harmful algal blooms (HABs) are a major barrier to the stable and efficient operation of seawater reverse osmosis (SWRO) desalination plants. Although the intensity varies regionally, the occurrence of HABs impairs plant operation through severe particulate, organic, and biological fouling of both pretreatment and RO systems. As a result, considerable effort has been put into developing and optimizing pre-treatment techniques to mitigate these problems. This study reviews the historical changes and current status of pretreatment applications based on >110 datasets for large SWRO desalination plants. Chronological analysis underscores the increasing trend in the operation of dissolved air flotation and ultrafiltration systems since severe HABs in the Middle East from 2008 to 2009. The impact of HAB characteristics on system performance was also analyzed, and the efficiency of current pretreatment systems for the removal of HABs was evaluated, along with proposals for operational guidelines. Finally, future strategies for i) intelligent monitoring and prediction of HABs, ii) improvement of unit processes for the removal of algal organic matter, and iii) utilization of algal biomass to alleviate environmental impact were systematically delineated for smarter, safer, and greener operation of future SWRO desalination plants in response to the occurrence of HABs.
AB - Harmful algal blooms (HABs) are a major barrier to the stable and efficient operation of seawater reverse osmosis (SWRO) desalination plants. Although the intensity varies regionally, the occurrence of HABs impairs plant operation through severe particulate, organic, and biological fouling of both pretreatment and RO systems. As a result, considerable effort has been put into developing and optimizing pre-treatment techniques to mitigate these problems. This study reviews the historical changes and current status of pretreatment applications based on >110 datasets for large SWRO desalination plants. Chronological analysis underscores the increasing trend in the operation of dissolved air flotation and ultrafiltration systems since severe HABs in the Middle East from 2008 to 2009. The impact of HAB characteristics on system performance was also analyzed, and the efficiency of current pretreatment systems for the removal of HABs was evaluated, along with proposals for operational guidelines. Finally, future strategies for i) intelligent monitoring and prediction of HABs, ii) improvement of unit processes for the removal of algal organic matter, and iii) utilization of algal biomass to alleviate environmental impact were systematically delineated for smarter, safer, and greener operation of future SWRO desalination plants in response to the occurrence of HABs.
KW - Data analysis
KW - Desalination plant operation
KW - Future strategies
KW - Harmful algal blooms
KW - Operational guidelines
UR - http://www.scopus.com/inward/record.url?scp=85138800716&partnerID=8YFLogxK
U2 - 10.1016/j.desal.2022.116094
DO - 10.1016/j.desal.2022.116094
M3 - Article
AN - SCOPUS:85138800716
SN - 0011-9164
VL - 543
JO - Desalination
JF - Desalination
M1 - 116094
ER -