Patent attributes
A salt water desalination equipment that can reduce a load on a salt water supply pump and a power consumption thereof is provided. A salt water desalination equipment includes a salt water supply unit that supplies salt water to a reverse osmosis membrane component, a forward osmosis membrane component to which concentrated salt water discharged from the reverse osmosis membrane component is supplied; and an assisting device to which a mixed water discharged from the forward osmosis membrane component is supplied and which is also connected to the salt water supply unit. The assisting device increases at least one of an electric power supplied to the salt water supply unit, a pressure given to the salt water supply unit, and rotation capacity to the salt water supply unit.