Hollow fiber curtain type membrane module

Abstract

The invention discloses a hollow fiber curtain type membrane module. The hollow fiber curtain type membrane module comprises an upper water production pipe, a middle water production pipe and a lower water production pipe which are sequentially arranged from top to bottom, an upper membrane tow of which the upper end is communicated with the upper water production pipe through a first membrane box, and a lower membrane tow of which the lower end is communicated with the lower water production pipe through a second membrane box, and the lower end of the upper membrane tow and the upper end of the lower membrane tow are respectively communicated in the middle water production pipe through a third membrane box and a fourth membrane box. According to the hollow fiber curtain type membrane module, on the basis that the effective length of the membrane filaments is guaranteed, the number of the water production pipes is reduced, and meanwhile, the filtering efficiency of the curtain type membrane module is guaranteed.

Description

technical field [0001] The invention relates to a hollow fiber curtain membrane module. Background technique [0002] In the hollow fiber curtain membrane module, the effective length of the membrane filament is generally within two meters, because the water production capacity of the membrane filament exceeding two meters cannot be improved, and the water production port is set at both ends of the membrane curtain. [0003] In the prior art, when the membrane pool is relatively deep, the depth of the membrane pool is matched by adopting the design of upper and lower double-layer membrane curtains. This structure has the following disadvantages: [0004] First of all, the upper and lower double-layer membrane curtains need to be connected with the upper and lower water production pipes, that is, the double-layer membrane curtain has a total of four water production pipes, the distance between the lower water production pipe of the upper membrane curtain and the upper water ...

AI Technical Summary

Problems solved by technology

[0004] First of all, the upper and lower double-layer membrane curtains need to be connected with the upper and lower water production pipes, that is, the double-layer membrane curtain has a total of four water production pipes, the distance between the lower water production pipe of the upper membrane curtain and the upper water production pipe of the lower membrane curtain is relatively close, and the water production pipes are used repeatedly in similar positions will cause unnecessary waste;

[0005] Secondly, due to installation requirements, there needs to be space between the lower production water pipe of the upper membrane curtain and the top of the lower membrane curtain installation bracket, and between the upper production water pipe of the lower membrane curtain and the bottom end of the upper membrane curtain installation bracket, which leads to the completion of the installation. Finally, there is a certain gap between the lower production water pipe of the upper membrane curtain and the upper production water pipe of the lower membrane curtain, resulting in the hollow fiber curtain membrane module not densely covered with membrane filaments in the up and down direction, and the filtering effect is relatively poor;

[0006] Finally, due to the need to install four water production pipes in the double-layer structure, the labor cost is relatively high

Images