JP3256161B2 - Contaminated 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 contaminated water that purifies domestic wastewater such as water and sewage, and wastewater containing organic matter in baths, pools, rivers, lakes and marshes, and makes the water clear and recyclable. The present invention relates to a method of purifying contaminated water for purifying and reusing polluted water.

[0002]

2. Description of the Related Art In recent years, with the improvement of cultural life, the demand for water is not limited to daily drainage, but there is also a large amount of water to be recycled and reused in swimming pools and baths. And re-use is an important issue. Also,
Rivers, lakes and marshes are used for drinking water with urbanization,
On the other hand, since urban wastewater also flows into the area, eutrophication has progressed, and there are very many problems to be solved, such as the occurrence of algae and propagation of bacteria.

[0003]

Generally, contaminated water containing these organic substances is purified by a filtration method. The representative ones are as follows. Slow filtration method: A method that requires large land and large structures to accommodate a large amount of water and perform aeration treatment and sedimentation treatment. The maintenance cost is low, but installation is becoming difficult. I have. Rapid filtration method: A method in which contaminated water is pumped to a filtration layer filled with a filter medium such as silica sand by a pump to filter the water. However, since suspended matter composed of fine particles smaller than the pores of the filter medium cannot be removed, naturally, it does not become drinking water. There is a problem. Floc flocculation rapid filtration method: An improved version of the above-mentioned rapid filtration method, in which a suspended substance that is difficult to coagulate and precipitate is treated with a large amount of chemicals to form floc and then filtered. There is a drawback in that a mixing tank is required, the filter medium is likely to be clogged by flocks, and a large amount of electrical instrumentation and automation equipment is required, construction equipment costs are high, and labor costs are high. Other, diatomaceous earth filtration, Woolly filtration method, and a cartridge filtration method, etc., can not filtration contaminants in high concentration, there is a problem that consumes a large amount of water backwash.

Recently, a permanent magnet is inserted into a flow path of treated water to remove carbon dioxide gas by a magnetic force in a direction of ionizing a chemical equilibrium of an inorganic substance such as calcium carbonate, and filter the ionized water. It has been proposed that this method was started in Russia, and there are various Japanese patent applications, but mainly a permanent magnet is placed in treated water to magnetize impurities. In many cases, the magnet is less than 1000 gauss and has a low degree of magnetization, and it is a method of magnetizing raw water containing mainly magnetic particles and removing it by precipitation or the like. Because it is inside the pipe, there is resistance to the flow of treated water in the pipe, depending on the contaminants in the treated water, it has no effect, disinfectant such as potassium permanganate, flocculant There is a problem that it cannot be used unless it is a specific type of raw water because of the effects and dangers of elution of the constituents of the magnet.There is almost no consideration given to the combination with filter media of other filtration devices. However, there is only a proposal to use the filter medium itself as magnet particles, and it has not yet been put to practical use for purifying domestic wastewater.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a filtration method which does not have the above-mentioned problems, and in particular, eliminates the use of fine particles of about 0.5 micron without using any coagulant as a chemical. Eliminate and reduce backwash water, little waste, reduce electrical energy and downsize filtration equipment, reduce mechanical and installation space, reduce human rights costs, reduce running costs, It is an object of the present invention to provide a purification method capable of continuously removing algae and bacteria.

[0006]

SUMMARY OF THE INVENTION According to the present invention, water containing organic matter, such as domestic wastewater, has
It is intended to provide a method that can be realized extremely easily and without the need for expensive equipment, particularly focusing on permanent magnets, and without installing it in the flow path of contaminated water as usual, And also, instead of utilizing the magnetic field lines between NS that are usually considered, utilize the single pole of a permanent magnet,
Provide contaminants in raw water in a state that can be easily removed by filtration, and provide a purification method using filtration that utilizes not only physical adsorption but also chemical adsorption in the filter material gaps by using filter media particles composed of metal oxides. Things.

That is, the present invention has examined effective means for solving the above-mentioned problems. As a result, a permanent magnet is attached to the outside of a pipe for supplying the water to be treated, but the S pole is inside and the N pole is outside. Alternatively, it is mounted as a single-pole type magnet that is the reverse of it, and by applying a magnetic force with repulsion of the same polarity to the inside of the pipe, the dissolved or dispersed material in the contaminated water is decomposed or ionized reversely and suppresses the growth of microorganisms, thereafter, in filtration methods, this time filter medium is for example a silicon oxide inorganic oxide, glass,
By using the oxidized ceramic fine particles, surprisingly clean water can be easily obtained.

According to the present invention, since the permanent magnet is provided with the same pole side inside and a magnetic field utilizing the repulsive force of the magnetic force is applied, the magnetic field is monopolar, and the contaminated water is less than the magnetic force of a normal NS magnet. Acted by a high magnetic force, it dissolves, decomposes, and ionizes dissolved substances in treated water, removes gasified substances and gases, and also finely breaks down organic, hard-to-ionize substances. The filter was made to be in a state where it could be easily filtered, and then it was intended to purify efficiently with a filtration device using metal oxide fine particles as a filter medium, and the results which could not be achieved by other methods could be obtained.

The single-pole type permanent magnet used here is described in US Pat. No. 4,605,498, and is known as a magnetizer. In general, there are many magnets having an S pole inside, but this is not the case. Not limited. When the contaminated water is pumped by a pump, any pipe such as a copper pipe, a steel pipe, a PVC pipe, and a stainless steel pipe may be used. Further, metal oxides used for the filter medium include quartz sand, silicon oxide, quartz porphyry fine particles, oxide-based synthetic ceramics,
One or a combination of glass or the like is used. The combination use of this and a cartridge filter medium is also permitted in the design of the filtration device.

[0010] Thus, since a single-pole type permanent magnet is used, a high magnetic force can be easily applied as compared with a type of permanent magnet using an irrelevant NS magnetic field. It is considered that-ions due to the contaminants become + ions by the treatment of the permanent magnet, and since the metal oxide used as the filter medium is-ions, it is considered that the ions are electrostatically bonded and easily removed. It is also believed that it is removed by the Kashmir effect. In any case, the contaminated water treated with the unipolar permanent magnet in this way
When filtering with a filtration device having a filter medium made of the oxide, the substance to be filtered is, in addition to the electrostatic bond, a chemical adsorption including an ionic bond, and a physical adsorption, and a high concentration adsorption of the substance to be removed is performed. It can be easily achieved, and when the filter media becomes clogged, it can be cleaned very easily by backwashing. The filter media can be used repeatedly, and the waste due to backwashing is relatively small, especially in the presence of algae. It is a breakthrough that the contaminated water can be easily filtered to eliminate algae and certain bacteria.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to carry out the method of the present invention, this will be described with reference to the drawings. FIG. 1 is a schematic explanatory view of the method of the present invention, in which water to be treated 2 is stored in a water reservoir 1 such as rainwater, river water, groundwater, a pool, a bath, etc., and a suction pipe 3 is connected below the water. Keep it. This pipe 3 has a valve 17
After that, the pressure is increased by the pressure pump 4 and connected to the pipe 5 provided with the flow switching valve 6 for forward flow and reverse flow. A water supply pipe 7 is connected to the valve 6 at the normal flow position, and its end is connected to an upper part of the filtration tank 9. The pipe may be any of a steel pipe, a copper pipe, an aluminum pipe, a stainless steel pipe, a PVC pipe, and a rubber pipe.

The upper part of the inside of the filter tank 9 is filled with a metal oxide-based filter medium 9R, and the lower part thereof is sequentially filled with a metal oxide-based filter medium, gravel, and pebbles having slightly larger particles. Before the filtration tank 9, the single-pole type permanent magnet unit 8 used in the present invention is used.
Is installed around the tube. A water collecting pipe 10 having an appropriate diameter is provided below the filtration tank 9, and a pipe 11 from the bottom is connected to the switching valve 6. The pipe 12 is connected to the positive flow of the flow path switching valve 6.
Is connected, and water is allowed to flow out to obtain purified filtered water. In the figure, the piping 12 is adapted to put the treated water 2b into the filtered water reservoir 15, and is connected to a pressurized pump via a lower valve from here. Further, the water can be returned to the original water reservoir 1 through the circulation pipe 14 shown by the dotted line. Either one is selected depending on the situation, but one of the valves 16 and 17 is open and the other is closed. Further, since the water in the filtration water reservoir 15 is relatively clean water, it can be used as backwash water. The filter medium in the filtration tank 9 adsorbs a certain amount of pollutants to the flow path switching valve 6. When the filtration pressure rises, the backwash water is flowed from the pipe 13 by flow pressure to wash the pollutants. Can be discharged outside. When the filtered water 2b is used as backwashing water, the switching valve 6 is switched to put the backwashing water into the filtration tank 9 via the pipe 11 and the water collecting pipe 10, and contaminants adhered to the filter medium. Is washed and guided outside the system (not shown) to be separated. In addition, the filtered clean water can be taken out of the system through the pipe 13 through the switching valve 6 and used for general use.

[0013]

The above illustration is an example of the case where the present invention is used, and there are other circuits, but the important point of the present invention is that FIG.
As shown in the figure, when the contaminated water to be purified is pumped by a pump in the direction of the arrow, a single pole type permanent magnet is provided outside the pipe 7 with an S pole inside and an N pole outside, or vice versa. The contaminants are exposed to a strong magnetic field by passing through the place where the unit 8 is installed, whereby, for example, the inorganic salts are in equilibrium with the ionic dissociated products, but generate a large amount of ionic dissociated products. The magnetic metal compound is magnetized and slightly deposits around the pipe, but most is ionized in the same manner as general inorganic substances, and is filtered to the right of the drawing. Further algae molecules under the influence of single-pole magnet specific high magnetic force is decomposed, other organic substances also becomes inactive due to the influence of magnetic force, it has been found that bacteria such as Escherichia coli are also killed.

The filter tank 9 shown on the right side is filled with a metal oxide-based filter medium, which is filtered by ordinary adsorption and chemical adsorption when filtering. In the present invention, the following effects can be considered as the reason why contaminated water containing organic matter can be efficiently removed by treating with a single-pole type permanent magnet and then filtering with a metal oxide type filtering agent. That is, by passing the contaminated water through a strong monopolar magnetic field, zero-point vibration occurs in the contaminated water, and organic impurities are adsorbed on the filter medium composed of the metal oxide.

That is, when a slight fluctuation of the electromagnetic field and the accompanying energy pass through the gap of the filter medium having an outer diameter of about 0.6 mm, it is considered that the one that has passed near the filter medium is adsorbed by the Casimir effect. Other impurities are successively spread and adsorbed to the adjacent filter medium, and finally, after passing through the filtration tank, are adsorbed and removed by the previous filter medium. This will be described with reference to FIG. 3. For example, when the filter media particles 18 having an outer diameter of 0.6 mm are close to each other, the contaminated water containing the impurity fine particles 19 having passed through a strong magnetic field between them causes zero-point oscillation. The state is shown by a small waveform in the figure. Under the fluctuation, the impurities are attracted to the filter medium by the Casimir effect. This while driving filtration machine and on top of the flat laid filtrate material gradually dropped quietly particles of the same filter material, when not applying the magnetic field is filter media surface to form a Fuji-like, digits or a magnetic field It is understood from the fact that it becomes flat immediately after that, zero point vibration is generated in the filter medium layer.

One theory is that the positively charged water treated by the magnet may be electrostatically attracted to the surface of the filter medium by the charge. This adsorption was strongly adsorbed gradually from the upper mold to the lower part as the filtration proceeded, but it was confirmed that the entire filter medium was adsorbed to the inside. It was also found that the purified water was automatically neutralized.

As shown in the transverse sectional view of FIG. 4 and the partially cut front view of FIG. 5, the permanent magnet used in the present invention is A magnet set 23a is formed by stacking three magnets, and the three sets are arranged at equal intervals. Each set is attached to the inside of the PVC-coated iron plate 22 at equal intervals to form a half body. By combining these two halves, each set can form magnets with the same polarity inside and 60 ° intervals. In this case, each set is separated from the insulating resin 2 such as PVC by separating the magnet by 5 mm or more.
3b can be integrated into the case. In addition, 2
Reference numeral 4 denotes a bolt-nut joint. Thus, one single-pole type permanent magnet can be constituted by a permanent ceramic magnet of 10,000 gauss or more. For example, if three permanent magnets are used side by side, a very strong magnetic force of 30,000 gauss or more can be applied. The present invention is not limited to such a structural example, for example, a very large section-shaped magnet, or a bar-shaped magnet, or changing the number of magnet sets, as long as the monopolar structure of the present invention is retained Can be implemented.

Since a known filter can be used,
If only the functional part is described with reference to FIG. 1, raw water is poured from above into a filtration device 9 filled with fine metal oxide- based filter medium 9R used in the present invention at the top, and the filtration is performed. It is recognized that water is filtered very efficiently by the filter medium. For example, when treating pure black water with hot water according to the present invention, a portion filled with a filter medium of a filtration device is made of transparent glass for observing the inside, and a glass chip formed of a metal oxide is used as the filter material. In the case of black water, about 15 cm of the filter medium became black at first, clean water flows down at the bottom, and the black part of the filter medium gradually spreads down, but its speed is not so fast . When it is determined that the filtration is clogged, by flowing backwash water from the lower part to the upper part, it is relatively easily washed, the filter medium becomes clean, and the filtration can be resumed. Although not shown, in the filtration using silica sand, there is a device in which silica sand is mixed in the overflowed water and is returned to the filtration layer from the upper portion. Perhaps because of the goodness, the upper surface of the filtration layer became flat, the filtration speed was high, and the efficiency was high.

On the other hand, when the same contaminated water was filtered without using a permanent magnet, clogging was immediately caused, and the filtration could not be performed with any filter media. Further, even if an SN type permanent magnet is mounted in a pipe into which contaminated water flows as in a known example, water ions containing a black organic substance are converted from-to +.
Water flow resistance was recognized by the magnet itself, and the filter medium of the filtration device immediately clogged on the surface and could not be filtered. I think that there are various causes, but even if a normal SN permanent magnet is provided outside the pipe and a magnetic force is applied, the magnetic force is added only at most about 400 to 1000 Gauss, but the single pole type used in the present invention is used. In the permanent magnet of the above, since the contaminated water can be treated by using a plurality of permanent magnets of 10,000 gauss or more as necessary, a strong magnetic force acts on fine particles and the like in the contaminated water, and a combination of ion change and a filter medium, It seems that effective processing can be performed.

The permanent magnet itself uses magnetic powder which is a combination of aluminum, nickel, cobalt and the like. The bar magnet is made of alnico, cerium, or ceramic ferrite.

[0021]

According to the present invention by the action of a single pole type permanent magnet, perform efficient ionization and degradation of their ionization and organic salts dissolved inorganic salts, further growth of certain bacteria such and algae This can be almost completely captured in the subsequent filtration tank, and filtered water close to clean water can be obtained. Therefore, it shows an excellent purification ability for purification of water such as pools and baths that require circulating use of municipal wastewater and a large amount of water, and the equipment is inexpensive, and the magnetic force depends on the degree of contamination of the target wastewater. Therefore, it is possible to select and use the magnetic force, and thus the cost is low. Further, since the filter medium in the filter tank is all in particulate form, when clogging occurs, it can be easily removed by backwashing and reused.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of an example of the method of the present invention.

FIG. 2 is an explanatory diagram of a main part of the method of the present invention.

FIG. 3 is an explanatory diagram of adsorption by a zero-point vibration of a filter medium.

FIG. 4 is a cross-sectional view showing a mounting structure of an example of a single-pole type permanent magnet used in the present invention.

FIG. 5 is a partially cut front view in the longitudinal direction of FIG. 3;

[Explanation of symbols]

 Reference Signs List 1 water reservoir 2 treated water 2b filtered water 3 suction pipe 4 pressurized pump 5 pipe 6 flow path switching valve 7 water supply pipe 8 single pole type permanent magnet unit 9 filtration tank 9R metal oxide filter medium 10 water collection pipe 11, 12 pipe 13 Backwash water pipe 14 Circulation pipe 15 Filtration reservoir 16, 17 Valve 18 Filter media particles 19 Impurity fine particles 21 Pipe 22 Resin-coated iron plate 23a Unipolar permanent magnet set 23b Resin insulation 24 Bolt-nut joint

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) C02F 1/28 C02F 1/48

Claims (4)

(57) [Claims] When supplying contaminated water to a filtration tank via a pipe and filtering the same, a permanent magnet having an S-pole or N-pole on the inner side and an N-pole or S-pole on the outer side is provided around the pipe. the attached, giving a magnetic field to process the contaminated water, then fed to the filter tank with the contaminated water by filling the particulate filter material of the metal oxide is removed by adsorbing the impurities on the filter medium Kiyoshi
Wherein the permanent magnet is molded from plastic.
Fan-shaped ceramic magnets in a closed fan-shaped case
Inner circumference is S pole to outer circumference N pole, or vice versa
Single-pole cased magnet, multiple inside and outside
By combining multiple pieces with the same polarity
The use of a cylindrical permanent magnet in a case
A method for purifying contaminated water. 2. When supplying contaminated water to a filtration tank via a pipe and filtering the same, a permanent magnet having an S-pole or N-pole on the inner side and an N-pole or S-pole on the outer side is provided around the pipe. the attached, giving a magnetic field to process the contaminated water, then fed to the filter tank with the contaminated water by filling the particulate filter material of the metal oxide is removed by adsorbing the impurities on the filter medium Kiyoshi
Wherein the permanent magnet is molded from plastic.
The outer periphery is N-pole or S-pole,
Multiple pole magnets with inner or south poles
Single pole type with several layers stacked to form a single pole configuration
Multiple permanent magnets at the same interval at equal intervals
Place and wrap the separated part with the plastic of the case
<br/> A method for purifying contaminated water, wherein a magnet in a case is used . 3. The magnet is made of ceramic, aluminum-
3. The method for purifying contaminated water according to claim 1, wherein the method is made of nickel-cobalt, cerium, or ceramic ferrite. 4. The method according to claim 1, wherein the metal oxide-based particulate filter medium is silica sand,
The method for purifying contaminated water according to claim 1 or 2, wherein the method is selected from silica sand, fine quartz rock particles, granular glass, porous siliceous or ceramic granular filter media.