JP2003245667A - Unit arrangement of water purifying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that, as the conventional reverse osmosis membrane method uses a filtration function by the micropores of a filter, so that small amount of micro residue remains in the filtered water, the method cannot produce highly pure water, and the problem that the conventional ion exchange method requires the washing or neutralization by an agent of an ion exchange resin. <P>SOLUTION: In the method for arranging and manufacturing a reverse osmosis unit and an ion exchange unit used for manufacturing the highly pure water by a water purifying device, the ion exchange unit is arranged and combined as a final filtration unit, thereby the highly pure water can be produced efficiently and simply at a low cost. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a unit arrangement of a reverse osmosis membrane unit and an ion exchange unit in a pure water production by a water purifier and a production method.

[0002]

2. Description of the Related Art Conventional water purifiers include a reverse osmosis membrane system, an ion exchange system alone, or a combination of a reverse osmosis membrane system and an ion exchange system. Method. However, cleaning the ion exchange resin or neutralizing with a chemical is troublesome.
Therefore, none of the water purification methods has been able to produce high-purity water efficiently, simply and inexpensively.

[0003]

In the conventional water purifier,
There is a problem that high-purity water cannot be produced efficiently, simply and inexpensively.

The conventional reverse osmosis membrane system has a problem that minute and trace amounts of residues remain in the filtered water and cannot be completely removed because of the filtering function of the fine pores of the filter. It was

The conventional ion exchange system has a problem that the ion exchange resin needs to be washed or neutralized with a chemical agent in a short period of time.

An object of the present invention is to obtain a highly purified water efficiently, simply and inexpensively by a water purifying apparatus, and further to provide a manufacturing method for efficiently, simply and inexpensively making the apparatus. .

[0007]

In order to achieve the above object, in the water purification apparatus of the present invention, a reverse osmosis membrane unit,
And an ion exchange unit.

The arrangement of the above units is such that the ion exchange unit is the final one as the final filtration unit of the reverse osmosis membrane unit.

Further, the ion exchange unit may be composed of a filter composed of a single ion exchange resin or a mixture of other porous material filters.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail with reference to the drawings based on embodiments. FIG. 1 is a diagram showing the configuration of an embodiment of the present invention. A filter unit (4) having a reverse osmosis membrane, comprising a water inlet (1), purified water outlet (2), a waste outlet (5), a water storage tank (7) and a pressure pump (3). A filtered running water system is formed with the ion exchange units (6) arranged in parallel.

This filtration running system uses a filter unit having a reverse osmosis membrane to filter most of the dissolved substances through the filtration membrane to soften the water (1).
Equipped with an ion exchange resin as the final filtration device,
By providing a filter (7) having a property of adsorbing and filtering a small amount of residue into high-purity water and arranging it in the final step, minute and minute amount of residue can be removed.

In order to provide the pressure required for the reverse osmosis membrane process, a pressure pump (6) is provided in the inlet conduit of the filter unit (1).

The main part of the water flow entering the raw water inlet (2) is taken out of the apparatus through the outlet (3), and 50 to 70% of the removed water is discharged to the waste outlet (4). Exhausted through. Waste water is used to prevent clogging of the osmosis membrane.
The function of the wash water allows the filtration function to be maintained for a long period of time.

The filtered water is stored in the water storage tank (5), operates in accordance with a predetermined tank capacity in consideration of the amount of water used, then the pressurizing pump is stopped, and the pressurizing pump is operated for a certain operating time. The filtration function can be maintained for a long period of time by performing cleaning in the osmosis membrane unit.

[0015]

Since the present invention is constructed as described above, it has the following effects.

The water purifier of the present invention can produce high-purity water efficiently, easily and inexpensively.

Since the soft water flowing into the ion exchange resin contains minute and trace amounts of residues, the burden on the ion exchange resin is small and the filtration function can be maintained for a long time. In addition, the ion exchange resin is
Since it is an inexpensive resin, it can be replaced at a reasonable cost.

Furthermore, since the number of times the ion exchange resin is washed or neutralized with a chemical can be reduced, it is possible to reduce the consumption cost of the filter material and the labor of exchanging the ion exchange resin.

[Brief description of drawings]

FIG. 1 is a diagram of an embodiment of the present invention.

FIG. 2 is a diagram of an embodiment of the present invention.

[Explanation of symbols]

1. Water inlet 2. Purified water outlet 3. Pressure pump 4. Filter unit water storage tank with reverse osmosis membrane 5. Waste port 6. Ion exchange unit as final filtration unit 7. Water storage tank

Claims (3)

[Claims] 1. A filter unit (4) including a reverse osmosis membrane, having a water inlet (1), a purified water outlet (2) and a pressure pump (3) for pressurizing the osmosis membrane, is provided with a small amount. And a waste port (5) for discharging the waste water of the stream.
On the downstream side, there is a water purification device in which filtered water softened through a reverse osmosis membrane and high-purity water flows out through an ion exchange unit (6) arranged in parallel. 2. The water purifier according to claim 1, wherein the ion exchange unit (6) is provided alone. 3. The ion exchange unit (6) is a filter composed of a single ion exchange resin, or a filter (7) composed of an ion exchange resin and another porous mixture.
The water purification apparatus according to claim 1, further comprising: [0001]