Integration of an MSF desalination system with an HDH system for brine recovery

Dahiru Lawal; Mohamed Antar; Atia Khalifa

doi:10.3390/su13063506

Integration of an MSF desalination system with an HDH system for brine recovery

Dahiru Lawal, Mohamed Antar^*, Atia Khalifa

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

A hybrid Multi-Stage Flash-Humidification Dehumidification (MSF-HDH) desalination system is investigated for energy recovery from an MSF system. The hybrid MSF-HDH system increases total productivity and performance ratio and reduces brine rejection. Hot condensed steam that leaves the MSF brine heater is used to warm the rejected pretreated brine from MSF to a higher temperature suitable for HDH system operation (about 60 °C). This allows us to increase the product (desalinated water) without additional “external” energy input to the hybrid system. Four different layouts of the integrated MSF-HDH system are presented and compared. The results show that an HDH system can utilize over 66% of an existing MSF brine blowdown, while the hybrid system can achieve a gained output ratio-GOR, water recovery ratio-RR, productivity and freshwater cost of 8.73, 44.86%, 30,549 m³/day and 1.068 $/m³ of freshwater, respectively. Utilizing 66.96% of MSF brine blowdown by the HDH system leads to a daily HDH productivity of about 670 m³ of drinking water, which is enough to support 134,000 persons considering a daily consumption of 5 L of drinking water per person.

Original language	English
Article number	3506
Journal	Sustainability
Volume	13
Issue number	6
DOIs	https://doi.org/10.3390/su13063506
State	Published - 2 Mar 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Dehumidification
Desalination
GOR
Gained output ratio
HDH
Humidification
Hybridization
MSF
Performance ratio

ASJC Scopus subject areas

Geography, Planning and Development
Renewable Energy, Sustainability and the Environment
Management, Monitoring, Policy and Law

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/su13063506

Cite this

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title = "Integration of an MSF desalination system with an HDH system for brine recovery",

abstract = "A hybrid Multi-Stage Flash-Humidification Dehumidification (MSF-HDH) desalination system is investigated for energy recovery from an MSF system. The hybrid MSF-HDH system increases total productivity and performance ratio and reduces brine rejection. Hot condensed steam that leaves the MSF brine heater is used to warm the rejected pretreated brine from MSF to a higher temperature suitable for HDH system operation (about 60 °C). This allows us to increase the product (desalinated water) without additional “external” energy input to the hybrid system. Four different layouts of the integrated MSF-HDH system are presented and compared. The results show that an HDH system can utilize over 66\% of an existing MSF brine blowdown, while the hybrid system can achieve a gained output ratio-GOR, water recovery ratio-RR, productivity and freshwater cost of 8.73, 44.86\%, 30,549 m3/day and 1.068 \$/m3 of freshwater, respectively. Utilizing 66.96\% of MSF brine blowdown by the HDH system leads to a daily HDH productivity of about 670 m3 of drinking water, which is enough to support 134,000 persons considering a daily consumption of 5 L of drinking water per person.",

keywords = "Dehumidification, Desalination, GOR, Gained output ratio, HDH, Humidification, Hybridization, MSF, Performance ratio",

author = "Dahiru Lawal and Mohamed Antar and Atia Khalifa",

note = "Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

year = "2021",

month = mar,

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doi = "10.3390/su13063506",

language = "English",

volume = "13",

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AU - Antar, Mohamed

AU - Khalifa, Atia

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Y1 - 2021/3/2

N2 - A hybrid Multi-Stage Flash-Humidification Dehumidification (MSF-HDH) desalination system is investigated for energy recovery from an MSF system. The hybrid MSF-HDH system increases total productivity and performance ratio and reduces brine rejection. Hot condensed steam that leaves the MSF brine heater is used to warm the rejected pretreated brine from MSF to a higher temperature suitable for HDH system operation (about 60 °C). This allows us to increase the product (desalinated water) without additional “external” energy input to the hybrid system. Four different layouts of the integrated MSF-HDH system are presented and compared. The results show that an HDH system can utilize over 66% of an existing MSF brine blowdown, while the hybrid system can achieve a gained output ratio-GOR, water recovery ratio-RR, productivity and freshwater cost of 8.73, 44.86%, 30,549 m3/day and 1.068 $/m3 of freshwater, respectively. Utilizing 66.96% of MSF brine blowdown by the HDH system leads to a daily HDH productivity of about 670 m3 of drinking water, which is enough to support 134,000 persons considering a daily consumption of 5 L of drinking water per person.

AB - A hybrid Multi-Stage Flash-Humidification Dehumidification (MSF-HDH) desalination system is investigated for energy recovery from an MSF system. The hybrid MSF-HDH system increases total productivity and performance ratio and reduces brine rejection. Hot condensed steam that leaves the MSF brine heater is used to warm the rejected pretreated brine from MSF to a higher temperature suitable for HDH system operation (about 60 °C). This allows us to increase the product (desalinated water) without additional “external” energy input to the hybrid system. Four different layouts of the integrated MSF-HDH system are presented and compared. The results show that an HDH system can utilize over 66% of an existing MSF brine blowdown, while the hybrid system can achieve a gained output ratio-GOR, water recovery ratio-RR, productivity and freshwater cost of 8.73, 44.86%, 30,549 m3/day and 1.068 $/m3 of freshwater, respectively. Utilizing 66.96% of MSF brine blowdown by the HDH system leads to a daily HDH productivity of about 670 m3 of drinking water, which is enough to support 134,000 persons considering a daily consumption of 5 L of drinking water per person.

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KW - GOR

KW - Gained output ratio

KW - HDH

KW - Humidification

KW - Hybridization

KW - MSF

KW - Performance ratio

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ER -

Integration of an MSF desalination system with an HDH system for brine recovery

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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