JPS62273008A - Membrane module - Google Patents

Abstract

PURPOSE:To control scales of a membrane wall by providing a guide generating a swirl around the center of a tubular membrane wall in a flow channel for the water to be treated. CONSTITUTION:A guide 9 constituted, for instance, with a spiral projection is provided to generate a swirl around the center of a tubular membrane 1A in a flow channel R1 for the water to be treated. As a result, the water to be treated flowing through the flow channel R1 for the water to be treated is turned into the swirl by the guide 9 to speed up the flow near a membrane wall 1A, and the shearing force around the membrane wall 1A is increased in proportion to the increased flow speed around the membrane wall. Accordingly, scales likely to be piled up on the membrane wall 1A cannot be piled up to control the scaling layer of the membrane wall 1A more effectively than the existing systems.

Description

Detailed Description of the Invention 8 Detailed Description of the Invention [Industrial Field of Application] The present invention provides a method for forming a flow path for water to be treated on one side of the inner and outer sides of a tubular membrane wall, and a flow path for water to be treated on the other side. The present invention relates to a membrane module for liquid treatment in which a flow path is formed.

[Conventional technology]

A flow path 0R1) for the water to be treated was formed so that the water flow path 0R1) could be opened.

[Problem that the invention seeks to solve]

However, the flow of the water to be treated is closer to the membrane Q (1A) than from the center.
Due to the stray flow in the vicinity, scale tends to accumulate on the membrane wall (1A) during the treatment of treated water, resulting in clogging in a short period of time.

An object of the present invention is to suppress scale on the membrane wall.

[Means for solving problems]

The characteristic structure of the membrane module for water treatment of the present invention is that a guide is provided in the flow path for water to be treated to generate a swirling flow around the center of the tubular membrane wall, and its effects are as follows. There is street C.

[For production]

In other words, the water to be treated flowing through the flow path for treated water becomes a swirling flow due to the guide, and the flow rate near the membrane wall increases, so that the shear force near the membrane wall increases in proportion to the increase in flow velocity. This will result in an increase.

As a result, the scale that attempts to deposit on the membrane wall cannot be deposited, and the scaling layer on the membrane wall is suppressed more than before. In other words, deterioration of the membrane blank is prevented.

〔Effect of the invention〕

Therefore, it was possible to efficiently maintain 7 lux over a long period of time with a simple structure without increasing the supply flow rate of the water to be treated.

〔Example〕

Next, an embodiment of the present invention will be explained based on the drawings.
2), the first stainless steel module is installed inside the stainless steel module container (3) and is equipped with a treated water supply port (4A) communicating with one end of the membrane tube fil.
A connecting member (4) is attached to one end of the membrane module (3), and a stainless steel @2 connecting member (6) is provided with a treated water outlet (5A) communicating with the other end of each membrane tube fl). Attach it to f- in addition to the membrane module container (3),
A collection port (8A) for the treatment liquid permeated from each membrane tube (1) is provided on the peripheral wall of the membrane module (3) to constitute a group module.

As shown in Figure 1 (a) and (b), the membrane tube (1)
is a flow f111α for water to be treated inside the membrane wall (1A).
1), a flow path for treated water (R2) is formed on the outside, and a swirling flow around the axis is formed on the inner surface of the membrane wall (1A) forming the flow path for treated water (R+). A spiral protrusion (9) is integrally formed so as to produce the following.

and a membrane tube + having the protrusion (9) formed on its inner surface.
13 is manufactured by extrusion molding from a cap i10+ having the cross-sectional shape shown in FIG. are molded into an integrated state.

[Another example]

Instead of the ceramic membrane tube (1), one coated with an organic polymer material such as polysulfone or cellulose acetate may be used, and these are collectively referred to as a membrane module.

The protrusions (9) may be provided in pairs at radially opposite positions as shown in FIG. 4, or may have a curved cross section as shown in FIG.

In addition, as shown in Figure G A), (B) and Figure 7, there are protrusions (9) projecting outward on the outer peripheral surface of the membrane tube [1].
may be integrally formed in a spiral shape around the center of the tube. In this case, a flow path for treated water (R+) is formed on the outside of the membrane wall (1A), and a flow path for treated water (R+) is formed on the inside of the membrane wall (1A). R2) may be formed.

The protrusions (9) may be formed intermittently instead of continuously forming a spiral shape (simply referred to as a guide).

[Brief explanation of drawings]

The drawings show an embodiment of the membrane module according to the present invention.
Figure (A) is a perspective view of the membrane module, Figure 1 (B) is a sectional view of the membrane module, Figure 2 is a sectional view of the cap, Figure 8 is an overall sectional view of the membrane module, Figures 4 and 5. The figure is a sectional view of a membrane module of another embodiment, FIG. 6(a) is a side view showing a partial cross section of another embodiment, FIG.
The figure is a sectional view of a membrane module according to another embodiment, and FIG. 8 is a side view of a membrane module of a conventional example, having a -giS cross section. (1A)...Membrane wall, (9)...Guy
(R+)...Flow path for treated water, (Rx)
--Flow path for treated water. . Agent Patent attorney Osamu Kitamura Figure 7 Figure 8 Procedural amendment (Birdman) % formula % 2. Name of the invention Membrane module 3. Relationship with the case of the person making the amendment Patent applicant address Naniwa, Osaka City, Osaka Prefecture 1-2-47 Shikitsu Higashi, Ward Name (105) Kubota Tekko Co., Ltd. 4, Agent 7, “Brief explanation of the drawings” from page 5, line 13 to page 6, line 5 of the statement of contents of the amendment ” column as follows. "4. Brief description of the drawings The drawings show an embodiment of the membrane module according to the present invention, and the first
Figure (A) is a perspective view of the membrane module, Figure 1 (II) is a sectional view of the membrane module, Figure 2 is a sectional view of the cap, Figure 3 is an overall sectional view of the membrane module, Figures 4 and 5. The figure is a cross-sectional view of a membrane module of another embodiment, Figure 6 (A) is a side view showing a partial cross section of another embodiment, Figure 6 (El) is a side view of (A), and Figure 7 is another example. FIG. 8 is a sectional view of a membrane module according to an embodiment, and FIG. 8 is a side view with a partial cross section of a membrane module showing a conventional example.

Claims (1)

[Claims] There is a flow path (R_1) for treated water on one side of the inner and outer sides of the tubular membrane wall (1A).
) and a membrane-treated water flow path (R_2) on the other side.
A membrane module comprising: a guide (9) for generating a swirling flow around the center of the tubular membrane wall (1_A) in the water flow path (R_1); module.