• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
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  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Membrane module for fluid treatment and manufacturing process of a membrane module. The present invention relates to a membrane module for fluid treatment in which the fouling deposition during the operation phase is minimized, where the membrane module comprises a turbulence promoting device incorporating a pendulum element, located near the active surface of the membrane, which causes changes in the hydrodynamic conditions inside the module and avoids preferential fluid trajectories that exacerbate the problem of fouling and the consequent loss of membrane permeability and selectivity. The invention also relates to the method of manufacturing the membrane module. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2596237A1
    申请号:ES201631540
    申请日:2016-12-01
    公开日:2017-01-05
    发明作者:José Miguel ARNAL ARNAL；Jaime LORA GARCÍA；Beatriz GARCÍA FAYOS；María Pino SANCHO FERNÁNDEZ；María Isabel ALCAINA MIRANDA
    申请人:Universidad Politecnica de Valencia；
    IPC主号:
    专利说明:

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    MEMBRANE MODULE FOR FLUID TREATMENT AND MANUFACTURING PROCEDURE OF A MEMBRANE MODULE
    DESCRIPTION
    OBJECT OF THE INVENTION
    The present invention relates to a membrane module for fluid treatment in which the deposition of fouling during the operation phase is minimized. Specifically, the invention relates to a membrane module comprising a turbulence promoting device incorporating a pendular element, located near the active surface of the membrane, which causes changes in the hydrodynamic conditions inside the module and prevents trajectories of the preferential fluid that exacerbate the problem of fouling and the consequent loss of membrane permeability and selectivity.
    The invention further relates to the method of manufacturing the membrane module.
    BACKGROUND OF THE INVENTION
    Since its inception, the development of membrane technology has successfully resolved problems of water supply and lack of water quality in various sectors through its application in water purification, treatment of liquid effluents, wastewater treatment and desalination , among others.
    The membranes used to implement these treatments are configured in
    modules that are where the membranes are housed, of different arrangement, where
    most of the time they have a spiral winding configuration and
    Other formats As a result of its operation, organic matter
    suspended and dissolved, salts, suspended solids, colloidal matter and
    microorganisms are deposited on the active layer of the membrane decreasing its
    permeability (its permeate flow production capacity) and its selectivity (its
    retention capacity or rejection of the contaminant). This phenomenon is called
    fouling (“fouling” in English), motivated by different transport mechanisms
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    as precipitation, crystallization or adsorption, among others, and requires periodic cleaning, interrupting the production of water, as well as the annual replacement of a percentage of annual membranes, when they reach an irreversible fouling.
    5 In order to minimize this phenomenon, two lines of action have traditionally been proposed: the application of pretreatment sequences prior to the entry of water into the membrane, which improve the quality of the water that reaches them, as well as the application of cleaning protocols that effectively recover the permeoselective properties of the membrane.
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    However, these two lines of action are not inherent in the structure of the membrane itself, which depends on the effectiveness of such treatments or cleaning protocols.
    There are solutions of membrane modules comprising at least one membrane sheet and a spacer element mesh, where the spacer element mesh comprises one or more wires fixed to said spacer element mesh whose vibration improves hydrodynamic conditions, the transfer of mass and flow compared to conventional separators.
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    However, the above solution has drawbacks in that at the time of cleaning the membrane, the breakage or detachment of the threads can occur with respect to the sheet of the spacer element, which is aggravated by the arrangement perpendicular of the threads with respect to the filaments of the spacer element mesh.
    The membrane module of the present invention solves all the above drawbacks by limiting the amount of dirt deposited, reducing fouling and the frequency of membrane cleaning, extending its useful life and improving permeoselectivity in its operation. Consequently, it is also possible to reduce the operating costs of the corresponding installation.
    DESCRIPTION OF THE INVENTION
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    The present invention relates to a membrane module for treatment of fluids of special configuration in which the deposition of fouling is minimized during the operation phase in which the passage of a hydrodynamic flow through the interior of the module is carried out. membrane.
    In particular, the invention relates to a membrane module comprising at least one membrane sheet and at least one spacer element mesh, where the membrane module is traversed by a hydrodynamic flow, where the at least one spacer element mesh It comprises at least one pendular element that acts as a turbulence promoter in the vicinity of the at least one membrane sheet, which causes changes in the hydrodynamic conditions inside the membrane module and avoids preferential paths of the hydrodynamic flow flowing through the interior. of the membrane module that exacerbate the problem of fouling and the consequent loss of membrane permeability and selectivity.
    Optionally, the membrane module further comprises at least one permeate collector that allows hydrodynamic flow to be collected after passing through the at least one membrane sheet.
    Due to its special configuration, the at least one pendular element that acts as a turbulence promoter confers a high mechanical resistance over time and better supports the turbulent flow generated with respect to the membrane module solutions with one or more wires attached to the mesh of spacer element.
    Preferably, the at least one spacer element mesh has a diamond-shaped configuration comprising connecting nodes between first strands of the mesh oriented in a first direction and second strands of the mesh oriented in a second direction, where the first and the second filaments are cut at the junction nodes, and where the at least one pendular element is attached to one of the junction nodes.
    Also preferably, the at least one pendular element is perpendicular to
    the direction of the hydrodynamic flow that circulates inside the membrane module.
    This special configuration reduces the loss of load generated by the flow
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    Hydrodynamic inside the membrane module through the spacer element mesh, which facilitates the passage of liquid.
    Optionally, the at least one pendular element is an elastic element, which gives it the property of being able to be oriented according to the direction of the hydrodynamic flow that circulates inside the membrane module.
    The invention also relates to a method of manufacturing a membrane module for fluid treatment comprising at least one stage of manufacturing a spacer element mesh where the spacer element mesh 10 comprises at least one pendular element integrated in the mesh of spacer element.
    In this way, the manufacturing of the spacer element mesh with the at least one integrated pendular element can be carried out on an industrial scale, so that the resistance of said spacer element mesh that integrates the at least one pendular element is uniform .
    BRIEF DESCRIPTION OF THE DRAWINGS
    Figure 1 shows a schematic view of the spacer element mesh of the fluid treatment membrane module of the present invention, where the displacement of the pendular element is shown on the left side when the hydrodynamic flow moves to the left, on the right side the movement of the pendular element is shown when the hydrodynamic flow moves to the right and in the central part the pendular element is shown when there is no hydrodynamic flow.
    Figure 2 shows Figure 1 where the instability of the primary and secondary flow caused by the pendular element in the upper part, 30 with respect to the conventional hydrodynamic flow without the presence of a pendular element in the lower part has been represented.
    Figure 3 shows a cross-sectional view of the fluid treatment membrane module of the present invention.
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    Figure 4 shows a plan view of Figure 3.
    PREFERRED EMBODIMENT OF THE INVENTION
    Next, the membrane module of special configuration will be described in detail in which the deposition of contamination during the operation phase is minimized.
    The membrane module comprises at least one membrane sheet (1), at least one spacer element mesh (2) and at least one permeate manifold (3), where the at least one spacer element mesh (2) has configuration in the form of a diamond comprising joining nodes (4) between first filaments (2 ') of the mesh (2) oriented in a first direction and a few second filaments (2' ') of the mesh (2) oriented in a second direction, where the first filaments (2 ') and the second filaments (2' ') are cut at the junction nodes (4).
    The membrane module comprises at least one pendular element (5) attached to one of the joining nodes (4), the at least one pendular element (5) being perpendicular to the direction of the hydrodynamic flow (7) that circulates inside of the membrane module.
    The at least one pendular element (5) is an elastic element, which gives it the property of being oriented according to the direction of the hydrodynamic flow that circulates inside the membrane module, recovering its initial position when the hydrodynamic flow (7). This orientation capacity of the at least one pendular element (5) subjects the membrane module to vibrations of the hydrodynamic flow (7) that cause a zone of primary instability (7 ') on the surface of the at least one membrane sheet (1 ), which is directly affected, and secondary instability (7 ''), caused as a consequence of primary instability (7 '), which interferes with the at least one spacer element mesh (2), which in conjunction allows to minimize the deposition of fouling during the operation phase
    The membrane module is of the spiral type, preferably comprising a
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    membrane sheet (1) arranged on each side of the at least one spacer element mesh (2), wrapping it, and where the at least one permeate manifold (3) is disposed adjacent to the membrane sheets (1) for the collection of the hydrodynamic flow after passing through the at least one membrane sheet.
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    In this exemplary embodiment, the method of manufacturing a membrane module for fluid treatment comprising at least one stage of manufacturing a spacer element mesh (2), wherein the spacer element mesh (2) comprises at least one pendular element (5).
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    Preferably, the manufacturing stage of a spacer element mesh (2) is an injection molding manufacturing stage, where the at least one pendular element (5) is integrated and forms part of the spacer element mesh (2).
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    权利要求:
    Claims (9)
    [1]
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    1. - Fluid treatment membrane module comprising at least one membrane sheet (1) and at least one spacer element mesh (2), where the membrane module is traversed by a hydrodynamic flow (7) that travels in a direction of hydrodynamic flow (7) characterized in that the at least one spacer element mesh (2) comprises at least one pendulum element (5) to promote turbulence in the vicinity of the at least one membrane sheet (1).
    [2]
    2. - Fluid treatment membrane module according to claim 1 characterized in that it also comprises at least one permeate collector (3) for collecting the hydrodynamic flow (7) after passing through the at least one membrane sheet (1) .
    [3]
    3. - Membrane module for fluid treatment according to any of the preceding claims characterized in that the spacer element mesh has a diamond-shaped configuration comprising joining nodes (4) between first filaments (2 ') of the mesh (2) oriented in a first direction and a few second filaments (2 '') of the mesh (2) oriented in a second direction, where the first filaments (2 ') and the second filaments (2' ') are cut in the junction nodes (4), and where the at least one pendular element (5) is attached to one of the junction nodes (4).
    [4]
    4. - Membrane module for fluid treatment according to any of the preceding claims characterized in that the at least one pendular element (5) is perpendicular to the direction of the hydrodynamic flow (7).
    [5]
    5. - Membrane module for fluid treatment according to any of the preceding claims characterized in that the at least one pendular element (5) is an adjustable elastic element according to the direction of the hydrodynamic flow (7).
    [6]
    6. - Membrane module for fluid treatment according to any of the preceding claims characterized in that it is of the spiral type.
    [7]
    7. - Membrane module for fluid treatment according to claims 2 and 6 characterized in that it comprises a membrane sheet (1) arranged on each side of the at least one spacer element mesh (2), wrapping it, and where the at least a permeate collector (3) is disposed adjacent to the sheets
    5 membrane (1).
    [8]
    8. - Method of manufacturing a membrane module according to any of the preceding claims characterized in that it comprises at least one stage of manufacturing a spacer element mesh (2) where the element mesh
    Spacer (2) comprises at least one pendular element (5) integrated in the spacer element mesh (2).
    [9]
    9. - Method of manufacturing a membrane module according to claim 8 characterized in that the step of manufacturing a spacer element mesh
    15 (2) is a manufacturing stage of injection molding.
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    同族专利:
    公开号 | 公开日
    ES2596237B2|2017-07-07|
    WO2018100215A1|2018-06-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP2143480A1|2008-07-02|2010-01-13|Rheinisch-Westfälisch-Technische Hochschule Aachen|Membrane device|
    US20130341264A1|2012-06-26|2013-12-26|Conwed Plastics Llc|Membrane filtration using low energy feed spacer|
    EP3028761A1|2014-12-02|2016-06-08|Center for Research and Technology-Hellas |Membrane modules utilizing innovative geometries of net-type feed spacers for improved performance in separations and spacer-fabrication methods therein|
    法律状态:
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    优先权:
    申请号 | 申请日 | 专利标题
    ES201631540A|ES2596237B2|2016-12-01|2016-12-01|MEMBRANE MODULE FOR FLUID TREATMENT AND MANUFACTURING PROCEDURE OF A MEMBRANE MODULE|ES201631540A| ES2596237B2|2016-12-01|2016-12-01|MEMBRANE MODULE FOR FLUID TREATMENT AND MANUFACTURING PROCEDURE OF A MEMBRANE MODULE|
    PCT/ES2017/070702| WO2018100215A1|2016-12-01|2017-10-20|Membrane module for the treatment of fluids and method for the production of a membrane module|
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