Gradiant Corporation

Jonn-Ross Andrews

Prakash Narayan Govindan

Maximus G St John

Steven Lam

Karim M Chehayeb

Looh Tchuin Choong

Provided herein are osmotic desalination methods and associated systems. According to certain embodiments, multiple osmotic membranes may be used to perform a series of osmosis steps, such that an output stream having a relatively high water purity&#x2014;compared to a water purity of an aqueous feed stream&#x2014;is produced. In some embodiments, multiple draw streams can be used to produce aqueous product streams having sequentially higher purities of water. Certain embodiments are related to osmotic desalination systems and methods in which forward osmosis is used to produce a first product stream having a relatively high water purity relative to an aqueous feed stream, and reverse osmosis is used to perform a second step (and/or additional steps) on the first product stream. In some embodiments, multiple reverse osmosis steps can be used in series to perform a net desalination process.

Osmotic desalination methods and associated systems

Selective scaling in water treatment systems in which desalination is performed is generally described. According to certain embodiments, the location of the formation of solid scale within a water treatment system is controlled by adjusting one or more system parameters, such as the temperature and/or flow velocity of a saline stream within the water treatment system.

Selective scaling in desalination water treatment systems and associated methods

Systems and methods for the removal of scale in humidification-dehumidification desalination apparatuses are generally described.

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Somerville, MA, United States of America

Jonn-Ross Andrews