JP3510188B2 - Water purification method - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for purifying the water quality of all wastewater such as lakes, ponds, pools and aquariums for fish farming by using a magnetic field and a filter medium together.

[0002]

2. Description of the Related Art As one of water purification methods, there is a filter medium. Various types of filter media are used. However, no matter how excellent the filter media is, the cleaning ability is gradually lost with the lapse of time, so that the filter media need to be replaced or washed.

Therefore, the larger the amount of waste water that needs to be treated, the more expensive it is to replace the filter medium. Further, when the filter material, the filter tank, and the filter are washed, a washing water treatment device is required. And the greater the amount of treated water required,
Large equipment is required, which requires space and equipment costs and running costs.

[0004]

The problem to be solved by the present invention is focused on the fact that magnetically treated water is molecularly activated, and it is effective to purify it by using magnetic treatment and a filter medium together. In addition to the above, in the filter medium that has been used for a long period of time, a large number of microorganisms that help purification are utilized to further enhance the effect of water quality purification and, at the same time, to eliminate the treatment of washing water of the filter medium.

[0005]

[SUMMARY OF] where water purification process of the present invention is characterized in raw water magnetically treated by passing through a magnetic field, and the magnetic water treatment was filtered with a filter medium and purified water, this
With releasing the purified water to the raw water source, the magnetic treatment
The point of water supply is that the filter medium is back-flowed at a proper time to wash the filter medium, and this filter medium washing water is discharged to the source of raw water.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION First, a water purification apparatus according to the present invention will be described with reference to FIG. The target of water purification is lakes,
It is dirty raw water W such as a pond, pool, fish tank.

A water intake pipe 1 is connected to a pump P through a known filter 2. The filter 2 removes visible dust in the raw water W, but a strainer may be attached to the tip of the water intake pipe 1 instead of the filter 2 or together with the filter 2. Reference numeral 3 denotes a water supply pipe, which connects the pump P and the filtration tank 6 via a magnetic processor 4 and a three-way cock (or three-way valve) 5.

2 and 3 show details of the magnetic processor 4. 41 is a case, 42 is a permanent magnet, and a plurality of pairs are fixed in the case 41 with the different poles facing each other with the water supply pipe 3 interposed therebetween. In the example of FIG. 3, a certain pair is alternately arranged with the N pole and the S pole, and the adjacent pair is alternately arranged with the S pole and the N pole, but this arrangement is arbitrary. For example, it is possible to dispose the N pole on one side and the S pole on the other side across the water supply pipe 3.

However, in order to enhance the effect of the magnetic treatment and to activate the water molecularly, the direction of the magnetic force line which hits the raw water W passing through the inner pipe 43 connected to the water supply pipe 3 changes intricately. Is preferred. Although 44 is a connection flange, in a small magnetic processor, the flange 43 is not provided, and the magnetic processor and the water supply pipe 3 are connected to each other by using an appropriate joint.

The filter tank 6 has an upper filter 61 and a lower filter 62 built therein, and a filter medium 63 is packed between the filters 61 and 62. The water supply pipe 3 is connected to the upper part of the filtration tank 6. Although the filtration tank 6 shown in FIG. 1 is a vertical type, it may be a horizontal type.

As the filter medium 63, a commercially available one can be used, but it is particularly preferable that the filter medium is made of a lightweight plastic material having a large surface area, a biological film is easily attached to the filter material 63 and a long water passage time. Such a filter medium has a higher filtration rate than the sand filtration method, and thin biofilms adhering to the surface of the filter medium can capture even SS (suspended substance, suspended matter) having a fine particle size, and also has high filtration accuracy. Reference numeral 7 denotes a purified water discharge pipe, which is connected to the bottom of the filter tank 6 and discharges the purified water filtered by the filter tank 6 to the source of the raw water W.

A backflow pipe 8 is connected to the three-way cock 5 and the bottom of the filtration tank 6. Also, 9 is a wash water discharge pipe,
The filter medium 63 is connected to the upper part of the filter tank 6 and the magnetically treated water is caused to flow backward to wash the filter medium 63, and the filter medium cleaning water is discharged to the source of the raw water W.

A reference numeral 10a denotes a cock (or a check valve) provided near the connection portion of the water supply pipe 3 to the filtration tank 6, and a reference numeral 10b denotes a connection portion of the purified water discharge pipe 7 near the connection portion to the filtration tank 6. 10,
Reference numeral c is a cock (or check valve) provided near the connection portion of the backflow pipe 8 to the filtration tank 6, and 10d is provided near the connection portion of the wash water discharge pipe 9 to the filtration tank 6.

The water purification of the raw water W will be described. The cocks 10c and 10d are closed, the cocks 10a and 10b are opened, and the three-way cock 5 is switched to open the water supply pipe 3.
When the pump P is operated, the raw water passes through the water intake pipe 1 and the water supply pipe 3 and is magnetically processed by the magnetic processor 4 as shown by a solid arrow in FIG. Further, the magnetically treated water subjected to the magnetic treatment is sent from the water supply pipe 3 to the filtration tank 6. Then, after being filtered by the filter medium 63, it is discharged as purified water from the purified water discharge pipe 7 to the water source of the raw water W.

Next, the cleaning of the filter medium 63 will be described.
The cocks 10a and 10b are closed, the cocks 10c and 10d are opened, and the three-way cock 5 is switched to open the backflow pipe 8. When the pump P is operated, the raw water W is magnetically processed by the magnetic processor 4 from the water intake pipe 1 through the water supply pipe 3 as indicated by the chain line arrow in FIG. The magnetically treated water flows into the filter tank 6 from the water supply pipe 3 and flows backward through the filter medium 63, and the filter medium cleaning water is discharged from the cleaning water discharge pipe 9 to the source of the raw water W.

As described above, since the magnetically treated water is molecularly activated, it is effective for filtering by the filter medium 63, and a large number of microorganisms effective for water quality purification exist in the filter medium washing water. Therefore, by returning this to the water source of the raw water, the water source can be further purified.

The magnetic processor 4 may be provided in both the purified water discharge pipe 7 and the wash water discharge pipe 9 or in one of them.
When it is provided in the purified water discharge pipe 7, the purified water is molecularly activated and further purification of the water quality of the water source can be expected. Even when the cleaning water discharge pipe 9 is provided, it is effective for breeding microorganisms that live in the filter medium 63 and are effective for water purification.

The device can also be used for drinking water suitable for drinking such as tap water and well water, or a water tank of an apartment house. In this case, the purified water is used as it is, but the filter medium washing water is separately treated without returning to the water source.

[0019]

[Effects of the Invention] Since a synergistic effect of magnetic treatment and purification by a filter medium can be exhibited, it is extremely effective for water purification, and a water purification apparatus can be downsized and running costs can be reduced.

By returning the filter medium washing water to the water source, the microorganisms effective in purifying the water quality in the filter medium can be used as they are, and the labor and cost of treating the filter medium washing water, which has been required up to now, is not required.

[Brief description of drawings]

FIG. 1 is a conceptual diagram of a water purification device.

FIG. 2 is a longitudinal sectional view of a magnetic processor.

3 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

4 Magnetic processor 6 filtration tanks 63 filter media W raw water

Claims (3)

(57) [Claims] 1. Raw water is magnetically processed by passing a magnetic field ,
The magnetic water treatment and purified water and filtered through a filter medium, as well as releasing the purified water to the raw water source, the magnetic water treatment is applied
A water purification method characterized in that the filter medium is sometimes back-flushed to wash the filter medium and the filter medium washing water is discharged to a source of raw water. 2. The water purification method according to claim 1 , wherein the purified water is magnetically processed by passing a magnetic field. Wherein the filter medium washing water is passed through the magnetic field magnetic
The water purification method according to claim 1 , wherein air treatment is performed .