JPS61263605A - Hollow yarn membrane device - Google Patents

Abstract

PURPOSE:To prevent the bending fatigue and entanglement of a hollow yarn membrane and to prolong the life of a hollow yarn membrane module by providing a support for supporting the hollow yarn membrane module consisting of a combustible material. CONSTITUTION:Plural hollow yarn membrane modules 8 are hung in a vessel 1 and a support 9 is attached on the outside of the module. A semicircular supporting part 10 is provided at the lower part of the support 9. The entanglement of the modules with each other is prevented by the support 9 and the whirling up of the module during backwashing is controlled by the semicircular supporting part 10. The support 9 can be burned along with the hollow yarn membrane by forming the support with the same material as that of the hollow yarn membrane and the output of wastes can be reduced.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a filtration device It (a hollow fiber membrane device C used in the filtration device It);
related.

[Technical background of the invention and its problems] For example, as a filtering device for radioactive waste liquid generated in a nuclear power plant, ultrafiltration or a filtration method using a flat membrane with a pore diameter of 1 μm is currently employed.

On the other hand, in ultrafiltration, compared to insoluble impurities (crud), the amount of permeated water is small due to the small pore size, so the required filtration area is large, and a high circulating flow rate and high filtration pressure are required. This makes the device complex and
Equipment costs and space requirements increase.

In addition, in the filtration device C2 using a flat membrane I with a pore size of around 1 μm, ε: l-1. Because it has a high solid content below am,
Clogging increases and the frequency of membrane replacement increases.

For this reason, a hollow fiber membrane filtration device is used, which can provide a large filtration area in a small space and can effectively filter radioactive waste liquid.

However, since the medium 9-thread filtration device has a structure in which tens of thousands of hollow fiber membrane modules are arranged, the rigid membranes may be damaged during handling, and the elastic membranes may be damaged due to backwashing. - The two membranes may become entangled, causing problems in operation C.

Furthermore, when installing a large number of these hollow fiber membrane modules, consideration must be given to preventing entanglement between the modules, and measures such as increasing the distance between modules are required, resulting in a large equipment size. Become a base.

[Object of the invention] The object of the present invention was made in view of the above-mentioned situation C.
The purpose is to provide a hollow fiber membrane device that extends the life of the hollow fiber membrane module.

[Summary of the Invention] The present invention relates to a hollow fiber membrane device C in a hollow fiber membrane filtration unit used for processing waste liquid, which has a structure integrated with a hollow fiber membrane module and is made of incinerated material. This book is characterized by the fact that it is produced by

[Embodiments of the invention] Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of a hollow fiber membrane filtration device for radioactive waste liquid showing one embodiment of the present invention.

As shown in FIG.
．． Nozzle 4, which is the outlet of backwash water. Nozzle which is the inlet of air for bubbling 5. A vent nozzle 6 and a drain nozzle 7 are attached, a plurality of hollow fiber membrane modules 8 are suspended, and an outer C unit support 9 is attached.

FIG. 2 is an enlarged view of section A in FIG. 1 C2, in which the support 9 is attached so as to surround the hollow fiber membrane module.

Further, a semicircular support portion IO is attached to the lower part of the support tool 9.

In this embodiment, a support 9 around the hollow fiber membrane module 8 is used.
This prevents entanglement with other modules, and prevents the hollow fiber membrane from flying up from the lower semicircular support part 10 (Y) during backwashing.

Next, another embodiment of the present invention will be described with reference to FIGS. 3 to 6.

FIG. 3 shows the center 5-support 9a of the hollow fiber membrane module 8.
A side view is shown when the is installed.

Further, FIG. 4 is a sectional view taken along line AA in FIG. 3.

In this embodiment, a round rod 11 is attached to the center of the hollow fiber membrane module, and the structure is such that the U-shaped tip 11a of the round rod prevents the hollow fiber membrane from flying up.

FIG. 5 shows an embodiment in which the support 12 is the same filamentous support as the hollow fiber membrane 13.

FIG. 6 is an enlarged view of cross section B of the hollow fiber membrane module in FIG. 5.

In this embodiment, a filament-like support of about several inches, the number of which is equal to the number of the hollow fiber membranes 13, is arranged in the module as a support 12, and this reduces bending fatigue, etc. when the legs of the hollow fiber membrane 13 rise from the C unit. be able to.

Furthermore, if this support 12 is placed on the outer peripheral portion of the module (i.e., a concentrated C2 device), it is possible to prevent entanglement with other modules.

Note that the support tool can be made of the same material as the hollow fiber membrane (it can be incinerated together with the second-strand module, reducing the amount of waste generated.

[Effects of the Invention] As described above, according to the present invention C2, when a hollow fiber membrane filtration device is used, bending of the hollow fiber membrane that occurs can prevent fatigue, entanglement, etc., and extend the life of the hollow fiber membrane module. It becomes possible to extend the

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a hollow fiber membrane filtration device for radioactive waste liquid showing an embodiment of the present invention, Fig. 2 is a schematic diagram of the hollow fiber membrane filtration device with section A in Fig. FIG. 4 is a side view of another embodiment of the present invention, FIG. 4 is a sectional view taken along A in FIG. 3, FIG.
It is an enlarged view of part B of the figure. 1... Container 8... Hollow fiber membrane module 9
, 10.11.12...Support 13...Hollow fiber membrane agent Patent attorney Noriyuki Chika (and 1 other person) Figure 1 Figure 21! I A Figure 3 Figure 4

Claims (1)

[Claims] (1) A hollow fiber membrane device comprising a hollow fiber membrane module and a supporting tool made of a material that supports the hollow fiber membrane module and can be incinerated.