Transcription of MULTI-EFFECT DISTILLATION (MED) - EOLSS
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UNESCO EOLSSSAMPLE CHAPTERSWATER AND WASTE WATER TREATMENT TECHNOLOGIES MULTI-EFFECT DISTILLATION (MED) Raphael Semiat Encyclopedia of Life Support Systems ( EOLSS ) MULTI-EFFECT DISTILLATION (MED) Raphael Semiat Rabin Desalination Laboratory, Grand Water Research Institute, Wolfson Faculty of Chemical Engineering Technion Israel Institute of Technology Technion City, Haifa 32000, Israel Keywords: concentrate, desalination, DISTILLATION , energy, environmental issues, heat transfer, mechanical, MED, MULTI-EFFECT evaporator, multi -stage, post-treatment, pre-treatment, scaling, thermal, vapor-compression. Contents 1. Introduction 2. Desalination Techniques Membrane processes Evaporative techniques 3. MED Design Issues Heat transfer in MED Orientation and scaling 4.
2.1.1. Reverse Osmosis (RO) Desalination with reverse osmosis membranes is a process whereby saline water under pressure is transferred along a membrane. The pressure applied is high enough to overcome the osmotic pressure of the dissolved salt in feed solution. The osmotic
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