System for desalinating water with multiple desalination processes

A system for water desalination, comprising:

• a membrane module, comprising:
• a feed tank configured to receive salt water,
• a heater configured to heat the salt water from the feed tank,
• a humidifier configured to receive the salt water from the heater and a carrier gas to form a wet gas comprising the carrier gas and water moisture from the salt water, and
• a membrane distillation unit comprising in order, a feed chamber, a membrane and a permeate chamber, wherein the feed chamber is configured to receive the salt water from the humidifier, the membrane is configured to let water vapor pass from the feed chamber through the membrane to the permeate chamber, and the permeate chamber includes an inlet configured to receive a sweeping gas;
• and
• an ejector module, comprising:
• an ejector including a first inlet configured to receive a primary fluid stream and a second inlet configured to receive a secondary fluid stream so that the primary fluid stream and the secondary fluid stream mix to form a mixed stream, and
• a bubble column dehumidifier configured to receive the mixed stream to form fresh water,
• wherein the second inlet of the ejector is connected to an outlet of the humidifier and an outlet of the permeate chamber so that the ejector is configured to receive the wet gas and the sweeping gas as the secondary fluid stream,
• wherein the membrane distillation unit and the ejector form an integrated distillation-ejector module, where the membrane separates a suction chamber of the ejector and the feed chamber of the membrane distillation unit on two opposing sides of the membrane, and the permeate chamber is part of the suction chamber.