Curtain type hollow fiber membrane module

Abstract

The invention relates to a curtain hollow fiber film. Wherein, the single hollow fiber is U-reverse shaped; the upper part of bended single film is inserted with insert tube; two ends of film line are irrigated in one irrigation casting box; two rows of film lines have exposure tube between them. The invention changes the former upright irrigation casting structure into U-shape structure, while the upper end avoids irrigation fixing but the round tube fixing; therefore, the upper film line can move in some range, and the exposure gas can pass the film line, to avoid accumulating mud between lines, to improve the filter property.

Description

technical field [0001] The invention relates to an external pressure submerged hollow fiber membrane module, in particular to a submerged hollow fiber membrane module and a unit membrane module which can be used in a membrane bioreactor, and in particular to the improvement of the membrane filament arrangement structure of the curtain membrane module. Background technique [0002] The crisis of fresh water resources is a worldwide problem. Although my country's total water resources ranks sixth in the world, the shortage of water resources is even more worrying. Experts predict that after 2010, my country will begin to enter a period of severe water shortage. Experts also pointed out that in 2030, my country's total water demand is expected to be 780 billion to 820 billion cubic meters, the total water supply will be 740 billion to 770 billion cubic meters, and the water shortage will be 40 billion to 50 billion cubic meters. The peak of water shortage will appear during th...

AI Technical Summary

Problems solved by technology

[0013] The previous hollow fiber curtain membrane structure is shown in Figure 1. It is a two-piece structure. Aeration cannot enter between the two membranes. Since the air and water cannot be fully shaken, sludge is easy to accumulate between the two membranes during use. , causing the hollow fiber membrane bundles to stick together, unable to contact with the liquid, thus losing the filtering effect

Especially in practical applications, it is found that in the curtain membrane, the sludge first accumulates on the upper end of the membrane filament, causing the hollow fiber membrane bundles to stick together and lose the filtration capacity

Images