Integrated salts precipitation and nano-filtration as pretreatment of multistage flash desalination system

Aiman E. Al-Rawajfeh, Hassan E S Fath, Abdelnasser Aboukhlewa

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In this paper, the effect of salts precipitators (SP) and nano-filtration (NF) on the scale deposits of multistage flash (MSF) is studied using the Skillman index for estimating the likelihood of calcium sulfate scaling. The analysis was carried out to study the sulfate scale potential for seawater with 0 to 100% pretreated make-up in an MSF reference plant. The results showed that the scale potential increases with increasing temperature and decreases with increasing the percentage of either SP or NF-treated feed. For seawater with no feed pretreatment, the scale can start depositing at 115°C. However, the maximum top brine temperature (TBT), at which sulfate scale begins to precipitate, is shifted to higher temperatures with increased pretreated portion. For 100% SP-treated feed, TBT reached 170°C. The temperature is shifted to 120, 135, and 145°C when the NF-treated portion increases to 10, 25, and 50%, respectively. For 100% NF feed pretreatment, TBT can reach as high as 175C.

Original languageEnglish
Pages (from-to)272-279
Number of pages8
JournalHeat Transfer Engineering
Volume33
Issue number3
DOIs
Publication statusPublished - 1 Feb 2012
Externally publishedYes

Fingerprint

Nanofiltration
Desalination
pretreatment
flash
precipitators
Salts
salts
sulfates
Seawater
Temperature
Sulfates
temperature
Calcium Sulfate
calcium
precipitates
estimating
deposits
Precipitates
Calcium
Deposits

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Fluid Flow and Transfer Processes
  • Mechanical Engineering

Cite this

Integrated salts precipitation and nano-filtration as pretreatment of multistage flash desalination system. / Al-Rawajfeh, Aiman E.; Fath, Hassan E S; Aboukhlewa, Abdelnasser.

In: Heat Transfer Engineering, Vol. 33, No. 3, 01.02.2012, p. 272-279.

Research output: Contribution to journalArticle

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