Anti-pollution and easy-to-wash hollow fiber membrane component and preparation method thereof

Abstract

The invention relates to the technical filed of water treatment and particularly discloses an anti-pollution and easy-to-wash hollow fiber membrane component and the preparation method thereof. The component comprises an upper end cover, a shell and a membrane core, wherein the membrane is arranged in the shell, the upper end cover, the shell and the membrane are hermetically and dismountably connected and hollow fiber membrane yarns are arranged in the membrane core in a U shape. The invention further discloses the preparation method of the hollow fiber membrane component. According to the anti-pollution and easy-to-wash hollow fiber membrane component and the preparation method thereof, as the upper end cover, the membrane core and the shell are dismountably connected, the membrane core can be conveniently washed and replaced; the service cycle of hollow fibers is prolonged and the use cost is reduced; through the special arrangement of a membrane box distributor, a membrane yarn support body, a membrane yarn distributor and an aeration pipe, not only are the membrane yarns arrayed in order and not intersected and intertwined, and also the washing and cleaning effect can be optimal, the component can be conveniently dismounted and the effect of easiness in washing and pollution prevention can be reached to a maximum extent.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to an anti-pollution, easy-to-clean hollow fiber membrane module and a preparation method. Background technique [0002] Due to the characteristics of large filling area, self-supporting structure and low cost, hollow fiber membranes have been widely used in the fields of surface water purification and double-membrane process pretreatment. [0003] Since the raw water contains a large amount of suspended solids, it is easy to pollute the hollow fiber membrane. The usual practice is to strengthen the pretreatment measures (such as using quartz sand filter) to reduce the pollution of the hollow fiber membrane and prolong its service life. [0004] In addition, there is also a method of improving the internal physical structure of the membrane module to reduce the pollution of the hollow fiber membrane. For example: Application No. 201210254283.3 discloses a column-type hollow...

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Problems solved by technology

However, the method puts forward higher requirements on the strength of the membrane filaments, otherwise, the phenomenon of messy and entangled membrane filaments will easily occur during the working process, which will aggravate the pollution of the membrane modules.

Patent Application No. 201010131633.8 discloses an external pressure hollow fiber membrane module with an anti-pollution structure. U-shaped membrane fiber hollow fiber membrane modules are used. However, if the hollow fiber membranes in the module are stretched too tightly, due to the The membrane filaments cannot swing effectively, and pollutants are easily deposited between the hollow fiber membrane filaments and the membrane filaments, which is not conducive to the improvement of the anti-pollution of the hollow fiber membrane; Due to the hydraulic impact of the membrane filaments, the hollow fiber membrane filaments are easily detached from the support body, and the membrane filaments are messy and entangled.

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