Four Levels of Clean, Low cost, Forgotten Water Technologies for... Four Levels of Clean, Low cost, Forgotten Water.. | Page 320

• 61’Membrane Distillation/Pervaporation: Effect mix of Accepted & Fully rejected by Western Mainstream(WM) • ■ 61’Membrane Distillation(MD)/Pervaporation of water: Hydrophobic membrane used in MD has liquid phase water blocking quality but allows vapour phase water to go through, • Fairly disruptive tech(possibly obviates or reduces some electricity needs of water desalination/distillation/water filtration because 40-80°C sun heat or low grade heat recovery would suffice for the process, while extreme vacuum methods allow down to 2-3°C vaporization, also technically easy to operate(much less scaling & fouling problem etc), ie low cost maintenance. Yet this tech might be appropriate to introduce widely before further lower cost disruptive tech to be introduced(not necessarily in water but low cost energy tech etc). • This factor might be causing gaps in ways this tech is promoted in the world: even differed amongst Western ally nations(eg Germany/Netherlands ahead, while US behind- and commercialization news is under-reported in Anglo- American media), while in China some even consider it as “conventional” water processing method linkedin.com/in/newnatureparadigm - Ben Rusuisiak: Specialty Cleantech Analysis, Vancouver, 320