JPH0648885U - Cartridge for water purification - Google Patents

Abstract

(57) [Abstract] [Purpose] In a water purification cartridge that purifies tap water, etc., to prevent the generation of offensive odors and the propagation of various bacteria during long-term water suspension. [Structure] A powdered activated carbon containing an antibacterial agent is contained in a container made of a water-soluble material, and this container is interposed between the granular activated carbon portion and the separation filtration membrane portion to uniformly disperse the powdered activated carbon during water passage. By causing it to flow out and depositing it on the surface of the separation filtration membrane, the generation of offensive odors and the propagation of various bacteria are prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water purification cartridge that removes residual chlorine, trace organic substances, etc. in tap water, and further suppresses the generation of odors and the propagation of various bacteria during long-term water suspension.

[0002]

[Prior art]

 When drinking water is filtered and purified with a water purification cartridge, an offensive odor may be generated or bacteria may propagate during long-term suspension of water. Therefore, measures have been taken to adsorb and remove this odor with powdered activated carbon. Before using the cartridge, the powdered activated carbon is stored in a container made of water-soluble paper or the like so that it does not come into contact with other filter media and does not scatter in the cartridge. It is placed at the boundary between the membrane and the granular activated carbon.

[0003]

[Problems to be solved by the present invention]

 However, in the prior art, although the odor is adsorbed and removed by the powdered activated carbon, effective measures are not taken for the propagation of various bacteria, and the present invention is to solve the problem.

[0004]

[Constitution of device]

 In the water purification cartridge of the present invention, at the same time as the passage of water, the powdered activated carbon to which the antibacterial agent has been added flows out and is dispersed together with the water-soluble paper and is dispersed and deposited on the surface of the separation membrane, so that the odor removing ability is high. No offensive odor is generated even when water is stopped for a long time, and the propagation of various bacteria is suppressed.

That is, the present invention is a water purification cartridge in which a separation filter membrane and granular activated carbon are housed in a cartridge case. The present invention relates to a water purification cartridge characterized in that a container in which it is accommodated is interposed and an antibacterial agent is added to powdered activated carbon.

A porous hollow fiber membrane is preferable as the separation filtration membrane used as the filtration body of the water purification cartridge of the present invention. As the porous hollow fiber membrane, a hydrophilic porous hollow fiber membrane made of cellulose, polyvinyl alcohol, etc. and a hollow fiber membrane made of polyolefin, polyester, polyamide, etc. temporarily made hydrophilic by a surfactant or hydrophilic It is possible to use a resin coated to make it permanently hydrophilic. As the antibacterial agent, an inorganic antibacterial agent containing a metal such as silver, zinc or copper, or an organic antibacterial agent such as an aromatic ester or a thiazoline compound can be used. These antibacterial agents may be added to powdered activated carbon in an amount of 0.5 to 20% by weight, preferably 1 to 10% by weight.

The powdered activated carbon container may be a container made only of a water-soluble material such as water-soluble paper, or its bag may be supported and fixed by a frame made of plastic or the like. Further, the powdered activated carbon container may be fixed between the separation filtration membrane and the granular activated carbon so as not to move freely in the cartridge case due to the water flow.

An embodiment of the present invention will be described below in detail with reference to the drawings.

【Example】

 FIG. 1 is a sectional view of a water purifier using the water purification cartridge of the present invention. Raw water before purification, that is, tap water, flows in from the raw water inlet 3. The raw water that has flowed in is circulated in the granular activated carbon 4 and purified, and reaches the bag-shaped powdered activated carbon container 6 made of water-soluble paper through the water passage 5. The water-soluble paper is dissolved by passing water, and the powdered activated carbon containing the antibacterial agent flows out and is dispersed together with the water-soluble paper, and is dispersed and deposited on the surface of the separation filtration membrane 7. The raw water is purified by passing through the granular activated carbon 4 and the separation filtration membrane 7 in this way, and then flows out of the cartridge from the purified water outlet 8. After stopping the water flow to the water purification cartridge for one week, the water flow was started again, but there was no odor in the water, and the number of germs did not increase compared to when the water flow was stopped.

[0009]

[Effect of device]

 In the water purification cartridge of the present invention, the powdered activated charcoal to which the antibacterial agent is added disperses and flows out together with the water-soluble paper, etc. at the same time when water is passed, and is effectively deposited on the surface of the separation filtration membrane, resulting in high odor removal capability. Moreover, it is possible to reliably prevent the generation of an offensive odor after a long-term suspension of water, and it is possible to suppress the propagation of various bacteria.

[0010]

[Brief description of drawings]

FIG. 1 is a sectional view of a water purifier using the water purification cartridge of the present invention.

[Explanation of symbols]

 1 Cartridge for water purification 2 Cartridge case 3 Raw water inlet 4 Granular activated carbon 5 Water passage 6 Powdered activated carbon container 7 Separation filtration membrane 8 Water purification outlet

Claims (1)

[Scope of utility model registration request] 1. A water purification cartridge having a separation filter membrane and granular activated carbon contained in a cartridge case, wherein a container containing powdered activated carbon to which an antibacterial agent is added is provided between the separation filtration membrane and the granular activated carbon. A water purification cartridge characterized by being interposed.