- Energy saving Forward Osmosis-filtration hybrid Water treatment/seawater desalination system using big size polymer draw solute and method of Water treatment/seawater desalination using the same

摘要

The present invention relates to a water treatment method and, more particularly, to a water treatment method which uses a polymer induction material as a positive osmotic induction solution and uses an osmotic pressure and a volume increasing pressure to form an energy-The present invention relates to an osmosis membrane-filtration membrane combined water treatment and seawater desalination system and method, which comprises a forward osmosis treatment unit including an inlet water tank containing influent water to be treated and an induction solution tank containing a hydrogel-derived solute-containing induction solution; A forward osmosis membrane positioned between the inlet water tank and the induction solution bath; And a filtration membrane located on the other side of the permeable membrane, wherein the influent water permeates the positive osmosis membrane by a pressure generated according to a difference in concentration between the influent water and the positive osmosis induction solution, The present invention provides a system and method for desalination of an energy-reduction type osmosis membrane-filtration membrane using a polymer inducing material which is introduced into an induction solution tank and passes through the filtration membrane by pressure due to an increase in volume, This makes it possible to maintain a high driving force in the forward osmosis process and to eliminate the need for a separate pressure device in the filtration membrane, thereby reducing the amount of energy required to recover the inductive solution.