Osmotic pressure generating agent and water treatment device using the same

摘要

Problem to be solved: to provide a method for suppressing the reduction of water treatment efficiency of a water treatment apparatus using an osmotic pressure generating agent having a semi semi interpenetrating structure.Solution: an osmotic pressure generating agent used in a positive osmosis membrane methodThe osmotic pressure generating agentContains hydrophilic resin and stimuli responsive resinThe hydrophilic resinHydroxyl groupCarboxyl groupSulfonic acid groupHaving at least one hydrophilic group and / or salt selected from the group consisting of a phosphate group and an amino groupWeight average molecular weightMore than 000;The osmotic pressure generating agent used in the positive osmosis membrane method wherein the hydrophilic resin and the stimuli responsive resin form (semi) interpenetrating polymer network.No selection