JPH04102697U - Water treatment elements - Google Patents

Abstract

(57) [Summary] [Purpose] A compact and lightweight product that does not cause short-circuits (short passes) before water passing through activated carbon fibers enters the hollow fibers, and does not cause clogging of the membrane pores of the hollow fibers. Moreover, it is an object of the present invention to obtain a high-performance water treatment element with excellent water permeability. [Structure] A water treatment element in which a hollow fiber bundle 4 is filled inside a cylindrical module 3, and activated carbon fibers 1 and sheets 2 are wound in layers on the outside.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is suitable for use in the medical field, precision electronic industry, food industry, drinking water field, etc. It relates to water treatment elements used in various industrial fields. More specifically, water treatment systems used in portable water purifiers, household water purifiers, etc. Regarding scientific elements.

0002

[Conventional technology]

Until now, the following hydrogen purifiers that combine granular carbon or activated carbon fibers with hollow fibers have been developed. It is being emitted. ○An element in which 1 granular carbon or activated carbon fiber and a hollow fiber bundle are arranged in series with the flow of water. child (Utility Model Application Publication No. 100690/1999). ○2 Element in which granular carbon or activated carbon fiber is arranged around the outer periphery of a hollow fiber bundle (Utility Model Publication No. 63 -115487). In ○1 or ○2 above, if high-performance crushed coal or briquette coal is used, activated carbon Particles contaminate the flow path, and the membrane pores of the hollow fibers become clogged, reducing water passing capacity. Melt. In addition, in ○1, when granular carbon or activated carbon fibers are arranged in series, the element The water purifier has an elongated shape, making it difficult to obtain a compact water purifier. On the other hand, a device like ○2 has also been proposed, but it does not pass through granular carbon or activated carbon fiber. Before the water enters the hollow fibers, it is easy to short-circuit (short pass), reducing purification performance. and become unstable. Furthermore, since activated carbon fibers are inherently bulky, they can be used as hollow fiber bundles. Even if you try to wrap it around the outer periphery of the material, it is difficult to fill it uniformly and with high bulk density. Yes.

0003

[Purpose of invention]

In order to improve the above-mentioned problems, the inventors of the present invention aimed to create a compact, lightweight, and high-performance device. This invention was arrived at as a result of intensive research aimed at developing water treatment elements. Ru.

0004

[Structure of the idea]

The gist of the present invention is as follows. In a cylindrical module having a non-permeable cylindrical wall, the inside of the module is For water treatment, filled with empty fiber bundles and wrapped with a laminated layer of activated carbon fiber and sheets on the outside. element.

[0005] In the water treatment element of the present invention, the cylindrical module protects the outer periphery of the hollow fiber bundle. This is to suppress the short path of water from the activated carbon fiber, and the cylinder wall is non-woven. Transparency is an important point for this invention. Resin, ceramic, metal, etc. are used as materials, but moldability, price, etc. In view of this, resins are particularly preferred. In addition, the types of resin include polypropylene, polypropylene, Resins such as polyethylene, ABS, and polymethyl methacrylate are used. The modules used are those with a diameter of 20 to 500 mm and a length of 20 to 700 mm. It will be done.

[0006] Hollow fibers are used to remove impurities such as solid matter (SS) and bacteria present in water. Types of hollow fibers include cellulose, polyolefin, polysulfone, and polyvinyl alcohol. type, polymethyl methacrylate type, etc., all of which are suitable for the above purpose. The hollow fiber has an outer diameter of 0.2 to 2 mm, an inner diameter of 0.1 to 1.5 mm, an average diameter of the pores of the fiber membrane of 0.01 to 1 μm, and a water permeability of 100 to 2000 1 /hr at a water pressure of 1 kg/cm.・Thickness of ^m2 is used. These hollow fiber bundles may be arranged convergently in a U-shape with both ends open, or may be arranged convergently in a straight line with one end closed and only the other end open. .

[0007] Activated carbon fiber is effective in removing chlorine and blue-green algae odors in water, and its types include are polyacrylonitrile (PAN)-based, cellulose-based, pitch-based, phenol There are things like systems. Forms include chopped, web, felt, and woven fabrics. A mixed paper sheet with other fibers is used.

[0008] Sheets to be laminated with activated carbon fibers may be film-like, paper-like, or non-woven. A transparent material such as a woven fabric or a net is used. The material is polyolef Resin-based materials such as fin, polyester, polyamide, and glass fiber are used. It will be done. The sheet is activated when the activated carbon fiber is to be wrapped around the module. Because it suppresses cutting and elongation of carbon fiber, it has excellent processability and is easy to wrap. In addition to improving the bulk density and suppressing variations in bulk density, It has the effect of improving water permeability. The tensile strength of the sheet is at least It is preferably 0.1 kg/cm or more, preferably 0.3 kg/cm or more.

[0009] The bulk density when the activated carbon fiber and the sheet are wrapped around a module and laminated. 0.10-0.40g/cc, especially 0.15-0.30g/cc is preferred.

0010 Hereinafter, the present invention will be specifically explained based on the drawings. In Figure 1, hollow fibers are arranged in a U-shape, and a module is attached to the outer periphery of the hollow fiber. A cross section of a laminated layer of activated carbon fiber and sheets wrapped around the outside of the module. It is a diagram. In Figure 1, water A flows parallel to the layer direction in which activated carbon fiber 1 and sheet 2 are laminated. The hollow fiber bundle 4 passes through the space 6 of the housing 7 and is filled into the module 3. A hollow fiber bundle 4 in which treated water B is fixed by a fixing part 5 through a hollow fiber membrane therein. It flows out from the opening 8 of the.

[0011]

[Effect of the idea]

This invention eliminates contamination, clogging, and fine powder inside the yarn due to granular charcoal, which were problems that had previously been encountered. This eliminates problems such as the outflow of powder and a decrease in the water passing capacity of hollow fibers due to fine powder. Ru. Additionally, when wrapped with activated carbon fiber alone, there is a problem of low packing density. However, with this invention, it is possible to achieve high packing density, no uneven water flow, and no variation in performance. A water treatment element could be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic vertical cross-sectional view of a water treatment element of the present invention.

FIG. 2 is a top view of the water treatment element of the present invention.

FIG. 3 is an exploded schematic diagram of FIG. 1;

[Explanation of symbols]

1 Activated carbon fiber 2 sheets 3 module 4 Hollow fiber bundle 5 Fixed part 6 Housing space 7 Housing 8 Opening of hollow fiber bundle

Claims (1)

[Scope of utility model registration request] 1. A cylindrical module having an impermeable cylindrical wall, the inside of the module being filled with a hollow fiber bundle,
A water treatment element with a laminated layer of activated carbon fiber and sheet wrapped around the outside.