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    WATER TREATMENT METHOD
    2.
    发明专利
    WATER TREATMENT METHOD 未知

    公开(公告)号：SG11201504957RA

    公开(公告)日：2015-07-30

    申请号：SG11201504957R

    申请日：2013-12-19

    Applicant: TORAY INDUSTRIES

    Inventor： TANIGUCHI MASAHIDE ,  MAEDA TOMOHIRO

    IPC: C02F1/44 ,  C02F1/52 ,  C02F1/56

    Abstract: Provided is a water treatment method in which impurities such as suspended substances in raw water are efficiently removed using a separation membrane, and in particular clarified water with sufficiently high water quality is stably produced as supplied water of a reverse osmosis membrane unit using a microfiltration membrane or an ultrafiltration membrane. The water treatment method, includes dosing a cationic coagulant to raw water a to form primary coagulated water, using the primary coagulated water as it is as final coagulated water when the zeta potential of the primary coagulated water b is less than 0 mV, or using final coagulated water obtained by dosing an anionic substance so that the zeta potential is less than 0 mV when the zeta potential of the primary coagulated water b is 0 mV or more, and treating the final coagulated water with a separation membrane of which the surface zeta potential is less than 0 mV, to obtain treated water d.

    Method for cleaning membrane module
    4.
    发明专利
    Method for cleaning membrane module 未知

    公开(公告)号：AU2012248472A1

    公开(公告)日：2013-11-14

    申请号：AU2012248472

    申请日：2012-04-24

    Applicant: TORAY INDUSTRIES

    Inventor： MAEDA TOMOHIRO ,  TANIGUCHI MASAHIDE

    IPC: B01D65/06 ,  B01D61/20 ,  B01D61/58 ,  B01D65/02 ,  C02F1/44

    Abstract: Provided is a method for cleaning a membrane module provided with a microfiltration membrane and/or an ultrafiltration membrane, and which is used to membrane-filter untreated water to obtain membrane-filtered water. Therein, in order to effectively clean a membrane module while minimizing drops in water recovery rates and chemical costs, and preventing leakages and retention of post-treatment chemical liquids to the secondary side of the membrane module, a chemical diffusion step is performed, in which chemical-containing water is supplied to the primary side of the membrane module, and the chemical is diffused from the primary side to the secondary side of the membrane module. This is followed by a backwash step in which water is backwashed from the secondary side of to the primary side of the membrane module. During the chemical diffusion step, the implementation time for the chemical diffusion step is controlled on the basis of the concentration of the chemical diffused to the secondary side of the membrane module.

    CONCENTRATION DIFFERENCE POWER GENERATION DEVICE AND METHOD FOR OPERATING SAME
    5.
    发明专利
    CONCENTRATION DIFFERENCE POWER GENERATION DEVICE AND METHOD FOR OPERATING SAME 未知

    公开(公告)号：CA2831750A1

    公开(公告)日：2012-10-04

    申请号：CA2831750

    申请日：2012-03-29

    Applicant: TORAY INDUSTRIES

    Inventor： TANIGUCHI MASAHIDE ,  MAEDA TOMOHIRO

    IPC: F03G7/00

    Abstract: A concentration difference power generation device generates power in such a way that high-concentration water and low-concentration water each having a different concentration are contacted each other via a semipermeable membrane unit equipped with a semipermeable membrane and water is made to penetrate from the low-concentration side to the high-concentration side by positive osmotic pressure, resulting in the increased amount of the high-concentration water, which is used for driving a power generator. The concentration difference power generation device is characterized in that the semipermeable membrane unit is divided into a plurality of sub-units (8, 12) and a flow path (L4) on the high-concentration side or a flow path (L3) on the low-concentration side, which leads from the sub-unit (8) of a previous stage to the sub-unit (12) of the next stage, is equipped with a pressure changing mechanism (11).

    Membrane separation device and operation method for membrane separation device
    7.
    发明专利
    Membrane separation device and operation method for membrane separation device 未知

    公开(公告)号：NZ701874A

    公开(公告)日：2016-07-29

    申请号：NZ70187413

    申请日：2013-05-21

    Applicant: TORAY INDUSTRIES

    Inventor： TANIGUCHI MASAHIDE ,  TOMIOKA KAZUNORI ,  MAEDA TOMOHIRO

    IPC: B01D63/12 ,  B01D61/58 ,  B01D63/00 ,  B01D65/08

    Abstract: Provided is a membrane separation device that uses a separation membrane in a well-balanced manner even when a separation membrane unit that employs a spiral-type separation membrane element is changed into a subunit, and that achieves efficient membrane separation treatment while effectively preventing fouling. The membrane separation device comprises a separation membrane unit component (8), a separation membrane unit (A) having supplied fluid-side lines (F1, F2) and a permeating fluid line (P), and a supply unit for fluid to be treated, and is characterized by: the provision of a seal member for fluid to be treated to the outer periphery of the telescoping prevention plate of the separation membrane element; being configured so that it is possible to move the separation membrane element substantially in either direction at a cylindrical pressurized container, and so that either the supplied fluid-side line (F1) or (F2) supplies the fluid to be treated and the fluid is discharged in concentrated form from the other supplied fluid-side line; and by comprising a mechanism that makes it possible to switch which of the supplied fluid-side lines is used for supplying fluid.

    Dispositivo de generación de energía por diferencia de concentración y método de funcionamiento del mismo
    8.
    发明专利
    Dispositivo de generación de energía por diferencia de concentración y método de funcionamiento del mismo 未知

    公开(公告)号：ES2551864T3

    公开(公告)日：2015-11-24

    申请号：ES12763989

    申请日：2012-03-29

    Applicant: TORAY INDUSTRIES

    Inventor： TANIGUCHI MASAHIDE ,  MAEDA TOMOHIRO

    IPC: F03G7/04 ,  F03G6/06

    Abstract: Un aparato de generación de energía por diferencia de concentración, en el que el agua de alta concentración y el agua de baja concentración que difieren en sus concentraciones se ponen en contacto entre sí a través de una unidad de membrana semipermeable (100) que comprende una membrana semipermeable, y un aumento resultante en una cantidad de agua de alta concentración, debido a la permeación de agua desde un lado de baja concentración a un lado de alta concentración provocada por una presión osmótica hacia delante, se utiliza para accionar un generador eléctrico (13) para generar electricidad, en el que la unidad de membrana semipermeable (100) se divide en una pluralidad de subunidades (8, 12) y comprende un canal intermedio del lado de alta concentración (L4) y un canal intermedio del lado de baja concentración (L3) que conectan las subunidades (8, 12), y el aparato de generación de energía por diferencia de concentración comprende un mecanismo de cambio de presión dispuesto sobre al menos uno del canal intermedio del lado de alta concentración (L4) y el canal intermedio del lado de baja concentración (L3).

    Fresh water generation method and fresh water generation device
    9.
    发明专利
    Fresh water generation method and fresh water generation device 未知

    公开(公告)号：AU2011321460A1

    公开(公告)日：2013-05-23

    申请号：AU2011321460

    申请日：2011-10-26

    Applicant: TORAY INDUSTRIES

    Inventor： MAEDA TOMOHIRO

    IPC: B01D65/06 ,  B01D61/58 ,  B01D65/02 ,  C02F1/44

    Abstract: To prevent an oxidation degradation of a semipermeable membrane and an increase in bio-fouling therein and avoid a cost increase due to chemicals or the like, in a fresh water generation method in which raw water is subjected to a membrane filtration with a microfiltration/ultrafiltration membrane module and then subjected to a membrane filtration with a semipermeable membrane unit, the membrane filtration in the microfiltration/ultrafiltration membrane module is temporarily stopped, chlorine agent containing water is supplied from a secondary side of the microfiltration/ultrafiltration membrane module to perform counter pressure cleaning of the microfiltration/ultrafiltration membrane module, and thereafter an ammonia compound and/or an amino compound is added to a primary side of the microfiltration/ultrafiltration membrane module to restart the membrane filtration in the microfiltration/ultrafiltration membrane module.

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