Preparation method of multi-central-tube hollow fiber membrane module

Abstract

The invention provides a preparation method of a multi-central-tube hollow fiber membrane module, which comprises the following steps: oppositely arranging two filament separation rings, and correspondingly embedding the two ends of a central tube into fixing sleeves at the corresponding positions of the filament separation rings respectively; arranging the membrane filaments into bundles according to the distance between the adjacent fin plates, and respectively embedding the two ends of a single bundle of membrane filaments between the adjacent fin plates of the filament dividing rings at the two ends until the membrane filaments are uniformly mounted between all the fin plates, so as to obtain a central tube assembly; integrally embedding the central pipe assembly into the membrane shell, fixedly mounting the wire dividing rings at the openings in the two ends of the membrane shell, cut-trimming the ends of membrane wires, then pre-blocking the openings of the membrane wires; and finally, performing sealing and pouring on the openings in the ends of the assembly, and after a pouring layer is hardened, cutting the ends to be level to remove the pre-plugged holes, thus manufacturing the multi-central-tube hollow fiber membrane module. By adopting the method, the installation difficulty of the membrane filaments can be greatly reduced, the preparation efficiency is improved, and the method has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, in particular to a preparation method of a multi-center tube hollow fiber membrane module. Background technique [0002] When the hollow fiber membrane module with a central tube treats sewage by external pressure, the central tube feeds water and distributes the sewage. The distribution performance of the central tube directly affects the working state of each membrane filament in the membrane module and the overall working efficiency of the module. The existing technology usually adopts the design of a single central tube, so the installation method is usually to install the sub-filament coil, the membrane shell and the central tube directly, then put the membrane filaments into the membrane shell, and finally cut the membrane filaments, Plugging and pouring. [0003] However, the design of a single central tube tends to lead to uneven water distribution, and the sewage is mo...

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Problems solved by technology

[0003] However, the design of a single central tube tends to lead to uneven water distribution, and the sewage is more likely to be distributed on the membrane filaments closer to the central tube. Compared with the higher processing pressure, in order to improve the problem of low application efficiency of membrane filaments caused by uneven distribution, the use of multi-center tube structure can perfectly solve this problem, but the assembly of hollow fiber membrane modules with multi-center tube structure is very difficult. According to the assembly method of the membrane module of a single central tube, it is not easy to install the membrane filaments. During the installation process of the membrane filaments, it is necessary to manually adjust the position many times to avoid cross-entanglement of the membrane filaments, which is inefficient.

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