Dual-stage forward osmosis/pressure retarded osmosis process for hypersaline solutions and fracking wastewater treatment

Ali Altaee, Nidal Hilal

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

Hypersaline solution with high TDS is not suitable for direct treatment by the conventional membrane and thermal processes. The current study proposes a dual-stage FO/PRO process for hypersaline solution treatment and power generation. The treatment process reduces the concentration of saline wastewater and hence renders it suitable for disposal directly to sea or treatment by the conventional membrane and thermal processes. The draw and feed solutions in the FO process were the hypersaline solutions and wastewater effluent, respectively. Five concentrations were evaluated for the process treatment with different concentrations ranging from 53. g/L to 157. g/L. The performance of FO membrane was estimated using pre-developed computer software. The results showed that a higher power can be generated from the PRO-FO system than from the FO-PRO system without compromising the concentration of hypersaline solution after dilution. The study also showed that although increasing the flow rate of draw solution resulted in an increase in the permeate flow rate, it caused a reduction in the dilution of draw solution. On the other hand, the study showed a negligible improvement in the performance of FO membrane upon increasing the feed solution flow rate. Finally, the simulation results showed that the concentration of diluted draw solution was suitable for the conventional membrane and thermal treatments or discharge to seawater after the dual-stage FO membrane treatment.

Original languageEnglish
Pages (from-to)79-85
Number of pages7
JournalDesalination
Volume350
DOIs
Publication statusPublished - 1 Oct 2014
Externally publishedYes

Fingerprint

Osmosis
Hydraulic fracturing
osmosis
Wastewater treatment
membrane
Membranes
Flow rate
Dilution
Wastewater
dilution
hydraulic fracturing
wastewater treatment
wastewater
Seawater
power generation
Waste disposal
Power generation
Effluents
Heat treatment
effluent

Keywords

  • Forward osmosis
  • Fracking wastewater
  • Hypersaline solution
  • Pressure retarded osmosis

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Dual-stage forward osmosis/pressure retarded osmosis process for hypersaline solutions and fracking wastewater treatment. / Altaee, Ali; Hilal, Nidal.

In: Desalination, Vol. 350, 01.10.2014, p. 79-85.

Research output: Contribution to journalArticle

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