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    HIGH WATER RECOVERY HYBRID MEMBRANE SYSTEM FOR DESALINATION AND BRINE CONCENTRATION
    1.
    发明申请
    HIGH WATER RECOVERY HYBRID MEMBRANE SYSTEM FOR DESALINATION AND BRINE CONCENTRATION 有权

    公开(公告)号：US20210170338A1

    公开(公告)日：2021-06-10

    申请号：US17162463

    申请日：2021-01-29

    Applicant: KUWAIT INSTITUTE FOR SCIENTIFIC RESEARCH

    Inventor： MANSOUR AHMED ,  Rajesha Kumar ,  Garudachari Bhadrachari ,  Yousef Jassim Essa Al-Wazzan ,  Jibu Pallickel Thomas

    IPC: B01D61/58 ,  B01D61/02 ,  C02F9/00 ,  B01D61/00

    Abstract: The high water recovery hybrid membrane system for desalination and brine concentration combines nanofiltration, reverse osmosis and forward osmosis to produce pure water from seawater. The reject side of a nanofiltration unit receives a stream of seawater and outputs a brine stream. A permeate side of the nanofiltration unit outputs a permeate stream. A feed side of a reverse osmosis desalination unit receives a first portion of the permeate stream and outputs a reject stream. A permeate side of the reverse osmosis desalination unit outputs pure water. A draw side of at least one forward osmosis desalination unit receives the reject stream and outputs concentrated saline solution. A feed side of the at least one forward osmosis desalination unit receives a second portion of the permeate stream and outputs a dilute saline stream, which mixes with the first portion of the permeate stream fed to the reverse osmosis desalination unit.

    Desalination system with mineral recovery
    3.
    发明授权
    Desalination system with mineral recovery 有权

    公开(公告)号：US10280095B1

    公开(公告)日：2019-05-07

    申请号：US16192302

    申请日：2018-11-15

    Applicant: KUWAIT INSTITUTE FOR SCIENTIFIC RESEARCH

    Inventor： Bhadrachari Garudachari ,  Mansour Ahmed ,  Rajesha Kumar ,  Jibu P. Thomas

    IPC: C02F1/12 ,  C02F1/04 ,  C02F1/14 ,  C02F103/08

    Abstract: The desalination system with mineral recovery is a system for desalinating water using spray drying, which allows for both the production of purified water and the recovery of mineral salts. The desalination system with mineral recovery is a two-stage system for zero-liquid discharge (ZLD) desalination of feed water. The feed water may be, for example, seawater, reverse osmosis (RO) brine (i.e., the waste brine from a RO process), nano-filtration (NF) reject, multistage flash (MSF) brine, or the like. The first stage receives the feed water and uses a spray drying process to produce concentrated brine and a first volume of purified water. The concentrated brine is fed to the second stage, which also uses a spray drying process to produce a second volume of purified water and a volume of recovered mineral salts.

    Method for making metal organic frameworks and thin film nanocomposite membranes using the same
    5.
    发明授权
    Method for making metal organic frameworks and thin film nanocomposite membranes using the same 有权

    公开(公告)号：US11254691B1

    公开(公告)日：2022-02-22

    申请号：US17181258

    申请日：2021-02-22

    Applicant: KUWAIT INSTITUTE FOR SCIENTIFIC RESEARCH

    Inventor： Rajesha Kumar ,  Mansour Ahmed ,  Bhadrachari Garudachari ,  Jibu P Thomas

    IPC: C07F3/06 ,  C07F1/08 ,  C01B37/00 ,  B82Y40/00

    Abstract: A method for making metal organic frameworks (MOFs) includes the step of dissolving metal salts in deionized water to form first solution, followed by adding a cyclic propyl phosphonic anhydride reagent to the first solution to form a second solution. The second solution is heated to form a reaction mixture containing MOF crystals, and is then cooled. The MOF crystals are filtered therefrom, washed and dried. To make metal organic framework-based thin film nanocomposite membranes, the MOF crystals are mixed with an m-phenylene diamine aqueous solution to form a mixture, which is then poured on a top surface of an ultrafiltration membrane substrate to form a first intermediate membrane structure. The first intermediate membrane structure is dried, and trimesolyl chloride in n-hexane solution is poured thereon to form a second intermediate membrane structure, which is cured to form an MOF-based thin film nanocomposite membrane, which is then rinsed and dried.

    Pressure-reduced saline water treatment system
    6.
    发明授权
    Pressure-reduced saline water treatment system 有权

    公开(公告)号：US10308524B1

    公开(公告)日：2019-06-04

    申请号：US16247825

    申请日：2019-01-15

    Applicant: KUWAIT INSTITUTE FOR SCIENTIFIC RESEARCH

    Inventor： Mansour Ahmed ,  Rajesha Kumar ,  Bhadrachari Garudachari ,  Yousef Jassim Easa Al-Wazzan ,  Jibu Pallickel Thomas

    IPC: C02F1/00

    Abstract: The pressure-reduced saline water treatment system combines both forward osmosis and reverse osmosis techniques for the desalination of salt water, such as seawater. A feed side of the reverse osmosis desalination unit is in fluid communication with the feed side of the forward osmosis desalination unit, such that seawater drawn through the feed side of the forward osmosis desalination unit is fed into the feed side of the reverse osmosis desalination unit. The reverse osmosis desalination unit outputs product water extracted from the seawater from a permeate side thereof. The feed side of the reverse osmosis desalination unit outputs a reject stream, which is fed to a draw side of the forward osmosis desalination unit, such that the draw side of the forward osmosis desalination unit receives the reject stream and outputs concentrated brine.

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