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DESALINATION TECHNOLOGY

DESALINATION TECHNOLOGY. THERMAL MEMBRANE SOLAR TECHNICAL ECONOMICS ENVIRONMENTAL POLITICAL. PERFORMANCE OF SPIRAL WOUND MEMBRANES. Membrane separation processes (UF and RO) Superior treatment Relatively modest capital and operating costs Major obstacles Permeate flux decline

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DESALINATION TECHNOLOGY

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  1. DESALINATION TECHNOLOGY • THERMAL • MEMBRANE • SOLAR • TECHNICAL • ECONOMICS • ENVIRONMENTAL • POLITICAL

  2. PERFORMANCE OF SPIRAL WOUND MEMBRANES • Membrane separation processes (UF and RO) • Superior treatment • Relatively modest capital and operating costs • Major obstacles • Permeate flux decline • Concentration polarization • Fouling • Temperature effects not well understood

  3. feed flow membrane Js solute permeate cw Jv cb cp convective flow back diffusion { solute boundary layer irreversible bound layer reversible gel layer Concentration Polarization Figure 1

  4. J Flux Decline Due to Fouling Jo(t)-decrease in pure water J(tp)- flux decline due to permeability due to fouling concentration polarization Jo Solvent flux across membrane i = 1 i = 2 Ja1 Ja2 i = n-1 i = n t tp tc membrane life-time -t permeation cleaning Time Figure 2

  5. HUMIDIFICATION/ DEHUMIDIFICATION PROCESSES

  6. SEAWATER GREENHOUSE • FRESH WATER FROM SEA AND BRACKISH WATER • CROP PRODUCTION • COOL HOUSE • ENVIRONMENTALLY FRIENDLY

  7. Research Approach

  8. AREAS FOR COLLABORATION • Student Training • Demonstration Seawater Greenhouse • Seawater Greenhouse Condenser • USDA/USDI • RO membrane fouling • Applied/Fundamental/Social/Environmental

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