One-sided packaged U-shaped hollow fiber membrane element and component

Abstract

The invention discloses a one-sided packaged U-shaped hollow fiber membrane element and component. The hollow fiber membrane element comprises a U-shaped hollow fiber membrane cluster, a sealing head and a central transverse diaphragm, wherein the central transverse diaphragm is positioned inside the U-shaped hollow fiber membrane cluster; the head end and the tail end of the U-shaped hollow fiber membrane cluster, one end of the central transverse diaphragm or a near end part at one end are sealed in the sealing head. According to the hollow fiber membrane element, different upper and lower end covers, membrane shells, inlets/outlets and central transverse diaphragms are matched, different types of hollow fiber membrane elements in external pressure, internal pressure, immersion and aeration can be formed, and the membrane element is high in universality. The hollow fiber membrane element and component adopt a one-sided packaged mode, and the assembling and packaging difficulty is reduced, so that the element is compact in structure, high in flexibility and simple and reasonable in sealing design, and a leakage risk of the element in the using process is reduced.

Description

technical field [0001] The invention relates to the field of membrane separation equipment, in particular to a hollow fiber membrane element and module. Background technique [0002] Membrane separation technology is widely used in the separation, purification, concentration and purification process of substances due to its high efficiency and low energy consumption. The existing membrane elements or membrane modules mainly include several types such as flat plate type, coil type, tubular type and hollow fiber, among which the hollow fiber membrane has the advantages of large membrane area, high module packing density and low cost. It has become a commonly used membrane module type. [0003] The structural design of the membrane module and the sealing performance of the membrane elements have an important impact on the reliability of the operation of the entire membrane separation system. Hollow fiber membranes have high membrane flux and certain flexibility, so making ful...

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Problems solved by technology

Invention patent application CN102160966A discloses an external pressure hollow fiber membrane module and its preparation method. The hollow fiber membrane element package of this module is equipped with a central tube and a central tube joint. The ends are respectively sealed at the upper and lower ends of the membrane shell. In order to keep the hollow fiber membranes evenly distributed in the vertical direction without twisting, an equiangular distribution plate is set. The end is also guaranteed to be sealed so that the membrane module will not leak

Invention patent CN101757853B discloses an external pressure hollow fiber membrane module and cleaning system with an anti-pollution structure. The module has a U-shaped membrane filament, and only one end of the membrane element forms a sealing layer. In the sealing layer on one side of the membrane element, since the head and the tail of the U-shaped membrane are not packaged separately, it only has the function of an external pressure component; There are aeration tubes, so this module only has the function of aeration and external pressure. MBR components of membrane bioreactors cannot have both immersion and internal pressure functions. The universal design function of membrane elements is not strong

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