Membrane cartridge

Abstract

A filtration membrane and a plurality of kinds of channel groove pattern (38, 39) are provided on a filtration plate (36), and a plurality of nozzles (41, 42) for collecting and taking out permeated liquid in the channel groove patterns (38, 39) are provided at the circumferential edge of the filtration plate (36), wherein the channel groove patterns (38, 39) have a plurality of inclining linear parallel through-channel grooves (38a, 39a), and a plurality of communication grooves (38b, 39b) interconnecting the through-channel grooves (38a, 39a), the through-channel grooves (38a, 39a) are arranged from one end toward the other end to gradually approach the closest nozzles (41, 42) for taking out permeated liquid, and the permeated liquid flows to the nozzles (41, 42) for taking out permeated liquid via the through-channel grooves (38a, 39a).

Description

technical field [0001] The present invention relates to a membrane cartridge constituting a submerged membrane separation device used for solid-liquid separation of activated sludge or the like. Background technique [0002] Conventionally, for example, in membrane separation activated sludge treatment, an immersion type membrane separation device is immersed in a reaction tank for performing activated sludge treatment on sewage or the like. In this membrane separation device, a plurality of organic flat-membrane membrane cartridges are packed in parallel at predetermined intervals inside the main body casing. [0003] like Figure 10 , Figure 11 As shown, the membrane filter element 10 has a filter plate 11 and filter membranes 12 arranged on the outer and inner sides of the filter plate 11 . Flow path grooves 13 are formed on the outer and inner surfaces of the filter plate 11 , and the permeate passing through the filter membrane 12 flows in the flow path grooves 13 . ...

AI Technical Summary

Problems solved by technology

Thus, there is a problem that the pressure loss at the intersection portion 20 increases

[0010] Moreover, in Figure 10 ~ Figure 12 In the shown membrane filter element 10, since the permeate outlet 14 is provided at only one position on the upper end of the filter plate 11, it is difficult to have sufficient suction pressure when the membrane filter element 10 is long in the vertical direction. To the lower part of the membrane filter element 10 away from the permeate outlet 14

Therefore, there is also a problem that sufficient permeate cannot be obtained from the lower part of the membrane filter element 10.

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