Seawater desalination has
been proved to be an efficient way to alleviate the global water crisis. Among
major desalination technologies, membrane separation seems to be the mostapplicable and economic method because of its high efficiency, small footprint,
energy saving, easily scales up etc.
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| Tubular Membrane Module |
Currently, membrane
researchers focus on developing better reverse osmosis (RO) and membrane
distillation (MD) membranes. RO is the dominate technology for membrane
desalination. However, it is difficult to treat high concentrated salt water
due to the extremely high osmosis pressure. In a MD process, the driving force
lies in the difference of the water vapor pressures between the membranes feed
and permeate sides. Theoretically, high concentrated brine water can be easily
treated as long as the low water vapor pressure in the permeate side can be
maintained either by running a cooling water or applying a low pressure in the membrane
permeate side. Read more>>>>>>
