Multi-central-tube hollow fiber membrane module

Abstract

The invention provides a multi-central-tube hollow fiber membrane module which comprises a barrel shell with openings in two ends, end sleeves, end covers, sealant layers, membrane wires, central tubes and connecting ends. Two ends of the barrel shell are both sleeved with the end sleeves in a sealing way, and the end covers cover the ends, away from the barrel shell, of the end sleeves. The sealant layers are installed in the end sleeves, the edge of the sealant layers are in close fit with the inner surfaces of the corresponding end sleeves, the two sealant layers are connected through a plurality of membrane wires, the membrane wires achieves communication between the inner sides of the end covers at the two ends, the two sealant layers are further connected through a plurality of center pipes, and the center pipes achieve communication between the inner sides of the end covers at the two ends. The openings of the central pipes in the end cover on a same side communicates with the outer side of the end cover through the connecting ends, a liquid outlet is formed in the side face of each end cover, and a plurality of liquid leakage holes are formed in the side face of each central pipe. By arranging the multiple central pipes, sewage is effectively dispersed, and the utilization rate of membrane filaments in the fiber membrane module is effectively increased.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, in particular to a multi-center tube hollow fiber membrane module. Background technique [0002] Hollow fiber membrane modules mainly adopt two water distribution methods in the design of module water distribution, one is central tube water distribution, the other is side interface water distribution, and the central tube water distribution is to set a center in the center of the membrane module The surface of the central tube is evenly opened with several holes, and the water enters through the central tube and spreads around, so as to contact the membrane filaments around the central tube for filtration. Although compared with the side interface water distribution, the central tube distributes water more evenly. However, the closer the distance to the central tube, the easier it is for the membrane filaments to touch the incoming water, so that the incoming water can be treate...

AI Technical Summary

Problems solved by technology

[0002] Hollow fiber membrane modules mainly adopt two water distribution methods in the design of module water distribution, one is central tube water distribution, the other is side interface water distribution, and the central tube water distribution is to set a center in the center of the membrane module The surface of the central tube is evenly opened with several holes, and the water enters through the central tube and spreads around, so as to contact the membrane filaments around the central tube for filtration. Although compared with the side interface water distribution, the central tube distributes water more evenly. However, the closer the distance to the central tube, the easier it is for the membrane filaments to touch the incoming water, so that the incoming water can be treated preferentially. However, the membrane filaments in the membrane module are densely arranged, and the diffusion of the incoming water to farther places needs to overcome the barriers brought by the membrane filaments. Resistance, which makes it difficult for the membrane filaments farther away from the central tube to treat the influent water, and the processing burden of the membrane filaments in different places in the membrane module is not the same, and the treatment effect is poor

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