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Membrane element and membrane module

A membrane element and filter membrane technology, applied in the field of membrane elements and membrane modules, can solve the problems of easy breakage and easy peeling of the filter membrane 2, and achieve the effect of preventing breakage

Active Publication Date: 2015-07-01
KUBOTA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the filter membrane 2 is likely to be peeled off at the welded part 4, or is likely to be damaged near the welded part 4.

Method used

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  • Membrane element and membrane module
  • Membrane element and membrane module
  • Membrane element and membrane module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0041] exist Figure 1 to Figure 4 Among them, the membrane cassette 11 constituting the membrane separation device is composed of a plurality of membrane modules 12 stacked up and down, and is installed so as to be immersed in a liquid to be treated in a treatment tank (not shown). In the membrane box 11 , an air diffuser 11 a is disposed below the lower membrane module 12 .

[0042] The membrane module 12 arranges a plurality of membrane elements 13 in parallel at predetermined intervals, and forms a longitudinal flow path between the membrane elements 13. water tank14. Each water collecting tank 14 is hollow, has a water collecting space inside, and has a square box body, but the shape may be other than square.

[0043] In this embodiment, the structure which arrange|positions the membrane element 13 in the up-down direction is shown. However, the arrangement direction of the membrane element 13 is not limited to the up-down direction, as long as it can be arranged along...

Embodiment approach 2

[0071] Such as Figure 8 As shown, the membrane module 12 may have a configuration in which the water collection tanks 14 are respectively arranged on both sides of a single membrane element 13 . In this case, the plurality of membrane modules 12 are arranged in parallel, and vertical flow paths are formed between the membrane elements 13 . The membrane element 13 used in this case may be any form of membrane element 13 described above.

[0072] Also in this configuration, the same operational effects as those in the first embodiment can be achieved.

Embodiment approach 3

[0074] Such as Figure 9 to Figure 11 As shown, the filter membrane 18 of the membrane element 13 has an inversion portion 20 folded back including the end 19 on the downstream side of the filter plate 17, and the peripheral portion 31 of the filter membrane 18 is aligned with the front and back of the filter plate 17 over the entire circumference. The main surface and the end portion 19 on the downstream side are joined to form a joint portion 32 .

[0075] In the present embodiment, ultrasonic vibration is applied from above the filter membrane 18 at the joining portion 32, and the filter plate 17 and the filter membrane 18 are welded together by frictional heat. However, it is also possible to join the filter plate 17 and the filter membrane 18 by means of an adhesive. The filter plate 17 has a water collection port 33 on the side, and has a permeate flow path (not shown) communicating with the water collection port 33 in the area covered by the filter membrane 18 .

[00...

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PUM

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Abstract

When permeate pushed up by aeration presses a filtration membrane, the reversed portion of the filtration membrane flexibly swells to allow the permeate to move and suppresses a load acting on the filtration membrane, thereby preventing the filtration membrane from being broken.

Description

technical field [0001] The present invention relates to a membrane element and membrane module used for filtration or concentration in general water treatment of upper water or waste water. Background technique [0002] As a conventional membrane separation device, for example, a submerged membrane device in which a plurality of membrane elements are arranged in parallel at appropriate intervals is known. As membrane elements, for example, there are Figure 16 to Figure 17 type shown. exist Figure 16 to Figure 17 In the membrane element, a filter membrane 2 made of an organic membrane is arranged on a rectangular flat filter plate 1 as a membrane support to cover its surface, and the filter membrane 2 is bonded to the filter plate 1 at its peripheral edge. 1 has a water collecting port 3. Here, the filter plate 1 made of resin is exemplified as a membrane support body, but members of flexible materials such as non-woven fabrics and nets may also be used as the membrane su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D63/08B01D63/00
CPCY02W10/15C02F2303/22B01D2315/06C02F1/44C02F2303/20B01D2313/04B01D65/003B01D63/081B01D63/082C02F3/1273Y02W10/10B01D2313/042
Inventor 枡谷英俊冈岛康信北野智一
Owner KUBOTA CORP