KR20120132709A - Device for Generating Micro Bubble Having Positive Charge and Water Treatment Apparatus Using the Same - Google Patents

Abstract

PURPOSE: A microbubble generating apparatus with positive charges and a water treatment apparatus using the same are provided to float microbubbles to be treated by attaching foreign materials with negative charges on the microbubbles without chemical. CONSTITUTION: A microbubble generating apparatus with positive charges includes an electrolytic cell(12) and a mixing tank(16). The electrolytic cell includes an anode electrode plate(12a) and a cathode electrode plate(12b) and electrolyzes water. The electrolyzed water is supplied to the mixing tank. Air is supplied to the mixing tank by an air introduction adjusting valve(15a). The mixing tank includes internal nozzles(17) to generate microbubbles. Microbubbles with positive charges and the water are drained through the outlet of the mixing tank.

Description

Device for Generating Micro Bubble Having Positive Charge and Water Treatment Apparatus Using the Same

The present invention relates to an apparatus for generating microbubbles with positive charges and a water treatment apparatus for sterilizing and disinfecting treated water using the same.

In general, microbubbles are environmentally friendly energy sources using only water and air, and are made in devices with very small bubbles from 1/100 mm to 1/1000 mm.

Unlike bubbles, these microbubbles are very fine bubbles having a diameter of 1 μm (1 micrometer) or less and microbubbles having a microbubble diameter of 50 μm or less.

The color is bright and the bubble bursts continuously in the water, and it shrinks and disappears in the water, and at the same time it rises at a very slow speed, and the shock wave including the ultrasonic wave of 40Khz generates the speed of 400 km per hour, generates a large amount of negative ion, It is known that there are properties that cause various effects, so that various application technologies can be developed using this.

As a result of the experiment that micro-bubbles can help the blood circulation of the human body, the micro-bubble-based hot spring has been recognized as a germicidal effect and an effect on biological activity by water including ozone and has been used for medical, health, food processing, And so on.

In addition, in the cleaning technique of vegetables and fruit, various pesticide residues remaining on the surface can be removed, and waste matter remaining on the skin of the human body can be easily discharged, thereby excelling in the beauty of the skin as well as relaxing the muscles of the human body, A function to help recovery is known.

Various types of micro-bubble generating devices for exploiting the various functions of such micro-bubbles are disclosed.

Republic of Korea Patent No. 10-0748580 is a micro-sized fine due to friction while passing through a porous hole nozzle while compressing at high pressure while injecting a small amount of water and injecting a small amount of air with a pump while injecting a small amount of air It is disclosed to generate bubbles.

The conventional micro-bubble generating device has a pump for pumping and circulating water in a tank, an air supply valve for supplying air to the circulating water, and a compression cylinder, and at the same time, the high-pressure compressed water is discharged to the exhaust side and is rubbed. In order to generate a large amount of micro bubbles, a specially manufactured micro nozzle must be separately configured.

Meanwhile, a water treatment method for removing particles in water by injecting microbubbles is known. Dissolved Air Flotation (DAF) generates microbubbles, which cause collisions between rising microbubbles and floating or settling particles. It is used to remove low-density particles such as algae or flocs in the water by lightly making bubbles and bubbles aggregated, and floating beneficiation is used to separate the minerals by blowing air.

 According to the collision theory of particles in water, the most important factor in removing particles by injecting microbubbles is the electrostatic property and size of the two factors, of which the electrostatic property is more important.

Most of the particles in the water are negatively charged, the micro-bubbles injected in the conventional water treatment method also has a negative charge.

Therefore, in the related art, since the negatively charged particles must also collide with the negatively charged bubbles, there is a problem that the efficiency is lowered or the pretreatment is excessive.

On the other hand, the floating beneficiation method is known to increase the efficiency of water treatment by artificially creating a positively charged microbubble using a surface adsorbent as a chemical, but using a chemical such as surface adsorbent in drinking water or natural water system Not only are they contaminating and compromising safety, but they are also expensive.

Accordingly, the present invention has been made to solve the above problems, the object of which is to generate a microbubble generating device capable of generating a large amount of fine bubbles having a positive charge to increase the adhesion with foreign matter having a negative charge To provide.

In addition, the present invention is to provide a water treatment apparatus using a microbubble having a positive charge that can be sterilized and sterilized by using the explosive energy generated during the explosion of microbubbles foreign matter, bacteria contained in the treated water.

As a specific means for achieving the above object, the present invention comprises an electrolytic cell for electrolyzing the treated water by having a positive electrode plate and a negative electrode plate in the inner space supplied with a predetermined amount of the treated water; The electrolyzed treated water is supplied under pressure by a pump provided in the middle of the length of the water supply pipe extending from the electrolyzer, and the air supplied through the air inlet control valve is supplied, and the microbubbles are formed while the treated water mixed with the air passes. And a mixing tank having a plurality of internal nozzles in a plurality of internal nozzles, the micro-bubble generating device for discharging the treated water together with the microbubbles given with positive charge generated during electrolysis through the outlet of the mixing tank. to provide.

Preferably, the inner nozzle includes a plurality of nozzle blocks spaced apart from each other at predetermined intervals on the inner surface of the mixing tank, and at least one nozzle hole formed through the nozzle block to allow a mixture of the treated water and air to pass therethrough. .

More preferably, the nozzle hole is elongated linearly or nonlinearly in the discharge direction so as to cause friction between the mixture of the treated water and air passing therethrough.

Preferably, the air inlet control valve is installed in the air inlet pipe connected to the treatment water supply pipe for supplying the treatment water to the electrolytic cell or in the air inlet pipe connected to the water supply pipe connected to the inlet side of the pump.

Preferably, the negative electrode plate and the positive electrode plate is made of any one of iron, aluminum and stainless steel.

In addition, the present invention is a micro bubble generator for generating a micro bubble having a positive charge; A processing tank in which the microbubbles generated in the microbubble generating device are supplied and a predetermined amount of raw water is stored; Bacteria attached to the microbubble by the explosive force generated during the explosion of the microbubble, including an ultrasonic oscillator for generating an ultrasonic wave of a certain intensity when the power is applied to explode the microbubbles floated to the surface after being supplied into the treatment tank It provides a water treatment apparatus using a micro-bubble generating device having a positive charge characterized in that the sterilization treatment.

Preferably, the treatment tank is connected to the raw water supply pipe having a raw water inlet control valve.

Preferably, the micro-bubble generating device is connected to the circulation pipe connected to the treatment tank so that the treated water sterilized in the treatment tank can be recycled.

Preferably, the micro-bubble generating device and the treatment probe is disposed in the storage tank for sterilization and sterilization treatment in the treatment tank to receive a drinking water available for storage.

Preferably, the micro-bubble generating device is connected via a raw water storage tank and a treated water supply pipe in which a predetermined amount of raw water is stored, and the treated water supply pipe is connected to a circulation pipe connected to the treatment tank.

Preferably, the treatment tank is connected to the microbubble supply pipe extending from the microbubble generating device to arrange the diffuser on the bottom surface to supply the microbubble with positive charge to the treatment tank.

Preferably, the ultrasonic oscillator is disposed at the same height as the diffuser or at different heights to supply the microbubble having the positive charge to the treatment tank.

Preferably, the micro-bubble generator is provided with a control unit for controlling the operation time for generating the microbubble having a positive charge and the operation time for generating the ultrasonic wave delivered to the microbubble having a positive charge in the ultrasonic oscillator.

According to the present invention as described above, by generating a positive charge by electrolyzing the treated water supplied from the outside, and passing the treated water and air through the inner nozzle of the mixing tank to generate fine bubbles having a positive charge, such as chemicals such as adsorbents Without the use of the negatively charged foreign matter attached to the micro-bubbles can be floated on the surface of the water treatment can reduce the cost of water treatment, and water pollution can be prevented.

In addition, microbubbles in water can be exploded in water by providing ultrasonic waves of a certain intensity to the microbubbles that float on the surface with bacteria or Escherichia coli attached to microbubbles with positive charges. By the explosive force generated during the explosion, the effect of disinfecting and sterilizing the bacteria attached to the microbubbles is obtained.

1 is a schematic diagram showing a microbubble generating device according to a preferred embodiment of the present invention.
Figure 2 is a schematic diagram showing a water treatment apparatus using a micro-bubble generating device according to a first embodiment of the present invention.
3 is a schematic view showing a water treatment apparatus using a microbubble generating device according to a second embodiment of the present invention.
Figure 4 is a schematic diagram showing the sterilization process by the explosion of micro-bubbles.

Hereinafter, with reference to the accompanying drawings, it will be described in detail a preferred embodiment of the present invention.

Microbubble generating device 10 according to a preferred embodiment of the present invention, as shown in Figure 1, includes an electrolytic cell 12, a pump 14 and the mixing tank 16.

The electrolytic cell 12 includes a plurality of positive and negative electrode plates 12a and 12b in an internal space in which a predetermined amount of treated water is supplied to electrolyze water that is introduced into the internal space to impart a positive charge to the treated water. .

One end of the electrolyzer 12 is connected to the treatment water supply pipe 11, and the other end thereof is connected to the water supply pipe 13 supplying the treatment water to the pump 14.

The anode and cathode electrode plates 12a and 120b are formed of a plurality of metal plates in which the voltage is applied from the outside in parallel with the supply direction of the treatment water and spaced apart at predetermined intervals in the electrolytic cell 12.

The cathode electrode plate 12a is an electrode plate from which an anode is applied to generate hydrogen gas by electrolysis of the treated water in the electrolytic cell, and an anode is applied from the outside to elute the positive charge of the metal thin plate to elute it from the cathode electrode plate. It may be composed of an electrode plate for imparting a positive charge to the gas to be.

Accordingly, the electrode plate 12a may be made of any one of iron, aluminum, or stainless steel.

That is, when a voltage is applied from the outside to the positive electrode plate and the negative electrode plate spaced apart from each other at a predetermined interval, and the positive electrode is applied to the positive electrode plate and the negative electrode is applied to the negative electrode plate, the negative electrode made of aluminum material by electrolysis. Hydrogen gas is generated in the electrode plate, and positive charges are eluted from the positive electrode plate to impart positive charges to the treated water.

Accordingly, when the cathode electrode plate is formed of an iron material, an electrolysis chemical reaction according to Chemical Formula 1 below occurs in the anode electrode plate.

≪ Formula 1 >

Fe → Fe ^{2 + +} 2e ^-

^{Fe 2 + → Fe 3 + +} e -

^{Fe 3 + + 3OH - → Fe} (OH) 3 ↓

In addition, when the cathode electrode plate is formed of aluminum, an electrolysis chemical reaction according to Chemical Formula 2 below occurs around the anode electrode plate.

<Formula 2>

Al → Al ^{3 + +} 3e ^-

^{Al 3 + + 3OH - → Al} (OH) 3 ↓

When voltage is applied to the positive electrode plate, metal ions (iron ions, aluminum ions) having positive potentials elute from the electrode plate, and insoluble metal hydroxides (iron hydroxide, aluminum hydroxide, etc.) are produced. The resulting metal hydroxide has a specific gravity greater than that of water, so that the electrolytic cell is gradually precipitated.

On the other hand, the electrolytic chemical reaction according to the formula (3) occurs in the negative electrode plate.

<Formula 3>

2H ^{+ +} 2e ^- → H2 ↑

When voltage is applied to the cathode electrode plate, hydrogen gas eluted from the electrode plate is generated.

The mixing tank 16 is pumped through the water supply pipe 13 so that the treated water electrolyzed by the pump 14 provided in the middle of the water supply pipe 13 extending from the electrolytic cell 12 is pressurized. 14).

The mixing tank 16 is supplied with the treated air with the external air supplied through the opening of the air inlet control valve 15a installed in the air inlet pipe 15, and the treated water mixed with the external air in the inner space. At least one inner nozzle 17 is formed to pass through and form microbubbles.

Here, the air inlet control valve 15a is illustrated and described as being installed in the air inlet pipe 15 connected to the treatment water supply pipe 11, but is not limited thereto and is connected to the inlet side of the pump 14. It is also possible to supply external air to the water supply pipe which is installed in the air inlet pipe connected to the water supply pipe 14 and supplies the treated water with positive charge.

The mixing tank 16 discharges microbubbles generated while passing through the inlet port 16a for introducing a mixture of the treated water and air fed from the pump 14 and the inner nozzle 17 and imparted a positive charge. Outlet 16b.

The inner nozzle 17 penetrates the nozzle block 17a spaced apart from the inner surface of the mixing tank 16 at a predetermined interval, and the mixture of treated water and air passes through the nozzle block 17a. At least one nozzle hole 17b, such as an orifice, is formed.

At this time, the nozzle hole 17b penetrating through the nozzle block 17a causes friction between the mixture of the treated water and the air passing therethrough, thereby increasing the amount of microbubbles and further reducing the size of the microbubbles. It is desirable to extend linearly or non-linearly in the discharge direction so that it can.

The diameter and the number of formation of the nozzle holes 17b formed through the plurality of nozzle blocks 17a may be optional according to the required pressure of the mixture passing therethrough.

Accordingly, the pressurized mixture of the treated water and the air introduced into the internal space through the inlet 16a of the mixing tank 16 is discharged through the outlet 16b of the mixing tank 16 to each nozzle block 17a. It passes quickly through the nozzle holes 17b formed in FIG.

At this time, the fluid mixture supplied into the mixing tank has a faster passage flow rate as it is closer to the outlet port 16b, while the fluid pressure between the adjacent nozzle blocks 17a is closer to the outlet port 16b. The faster it decreases.

As such, the air contained in the treated water is generated while passing through the nozzle by a very rapid decrease in the fluid pressure during a short time when the fluid mixture mixed with the treated water and the air exits the outside in the mixing tank 16. The size of the bubbles is further reduced to generate a larger number of fine bubbles from the outlet 16b.

Further, by supplying the treated water having a positive charge to the internal space of the mixing tank 16, the fine bubbles to which a positive charge is applied through the outlet 16b of the mixing tank 16 is generated.

That is, the treated water electrolyzed in the electrolytic cell 12 by the operation of the pump 14 is pumped to the inlet 16a of the mixing tank 16 through the water supply pipe 13 together with the air, the mixing tank The mixture of the treated water and the air supplied to the inside of the passage 16 passes through the nozzle holes 17b formed in the respective nozzle blocks 17a, and a high turbulent mixing region is generated behind the nozzle holes 17b.

Turbulent flow in these mixing zones causes severe pressure fluctuations, and due to the low jet stream pressure, negative pressure zones are formed below atmospheric pressure, and under these conditions, bubbles are generated whenever a sudden pressure drop occurs. More and smaller microbubbles are generated as they pass through the two nozzle blocks.

At this time, the fine bubbles discharged through the discharge port of the mixing tank are given positive charges generated during electrolysis in the electrolytic cell, and the fine bubbles having positive charges are discharged from the discharge port to the outside, and the fine bubbles having such positive charges are bubble supply lines. It is supplied to the place of use through (18).

Figure 2 is a schematic diagram showing a water treatment apparatus using a microbubble generating device having a positive charge showing a first embodiment of the present invention.

As shown in FIG. 2, the water treatment device 100 of the present invention includes a micro bubble generator 10, a treatment tank 20, and an ultrasonic oscillator 30.

The microbubble generating device 10 is the same as the above-described configuration, the detailed description thereof will be omitted, and the same reference numerals are assigned.

The treatment tank 20 may be formed of a box-shaped tank structure in which microbubbles having positive charges generated by the microbubble generating device 10 are supplied, and a predetermined amount of raw water that is a sterilization treatment target is filled.

This treatment tank 20 is connected to the raw water supply pipe 21 having the raw water inlet control valve 23 is filled with a certain amount of raw water through this, and is provided with a water level gauge 22 to measure the level of raw water filled in the treatment tank can do.

The treatment tank 20 is connected to the microbubble supply pipe extending from the microbubble generating device 10 to arrange the diffuser 24 on the bottom surface to supply microbubbles with positive charges, thereby generating microbubbles with positive charges. The surface of the treatment tank 20 can be floated to the surface.

Accordingly, foreign matters, bacteria, and bacteria contained in the raw water filled in the treatment tank are attached to the microbubbles having positive charges and are floated together with the bubbles to the surface by buoyancy.

The treatment tank 20 has a drinking water discharge pipe 26 having a control valve 26a to discharge the sterilized and sterilized drinking water to the outside and a control valve 27a to discharge the remaining raw water to the outside. A drain pipe 27 is included.

In addition, the ultrasonic oscillator 30 is supplied through the diffuser installed in the bottom surface of the treatment tank 20 and the ultrasonic wave of a certain intensity when the power is applied to deliver the ultrasonic waves to the surface floating in the surface of the treatment tank By providing it inside, microbubbles can be exploded in water before they reach the surface.

The ultrasonic oscillator 30 is installed on the bottom surface of the treatment tank 20 in which the diffuser 24 for supplying fine bubbles having positive charges is disposed and is disposed at the same installation height as the diffuser 24. Although described, the present invention is not limited thereto, and may be disposed at a position spaced apart from the bottom of the treatment tank 20 by a predetermined height, and may be disposed at different installation heights from the diffuser 24.

In addition, the microbubble generating device 10 is connected to the circulation pipe 29 connected to the treatment tank 20 to recirculate and supply the treated water sterilized and treated in the treatment tank 20.

In addition, the operation time for generating a microbubble having a positive charge in the microbubble generating device 10 and the operation time for generating an ultrasonic wave delivered to the microbubble having a positive charge in the ultrasonic oscillator 30 does not overlap each other. And a control unit 25 for controlling the operation timing of the bubble generator and the operation timing of the ultrasonic oscillator.

Figure 3 is a schematic diagram showing a water treatment apparatus using a microbubble generating device having a positive charge showing a second embodiment of the present invention.

As shown in FIG. 3, the water treatment apparatus 100a of the present invention includes a microbubble generator 10, a treatment tank 20, and an ultrasonic oscillator 30, and the same configuration as in the first embodiment is the same. Reference numerals are given, and detailed description is omitted below.

Between the micro-bubble generating device 10 and the treatment tank 20 may be disposed in the storage tank 40 for sterilization and sterilization treatment in the treatment tank 20 to receive a drinkable drinking water, and to store a predetermined amount, such a storage tank ( 40) the drinking water discharge pipe 43 having a control valve 43a to discharge the sterilized sterilized drinking water to the outside and the drain pipe having a control valve 44a to discharge the remaining drinking water to the outside. (44).

The treatment tank 20 may be provided with water level sensors 22a and 22b for detecting the maximum water level and the lowest water level of the filled raw water.

The treatment tank 20 is connected to the microbubble supply pipe 18 extending from the microbubble generator 10 as in the first embodiment, and is supplied to the surface together with the diffuser 24 to supply microbubbles with positive charges. An ultrasonic oscillator 30 is provided on the bottom surface to generate ultrasonic waves of a certain intensity when power is applied so that ultrasonic waves can be delivered to the floating micro bubbles.

The diffuser 24 and the ultrasonic oscillator 30 may be installed at the same height on the bottom surface of the treatment tank 20 or may be installed at different heights.

In addition, the micro-bubble generating device 10 is connected to the raw water storage tank 20a and the treated water supply pipe 11 in which a predetermined amount of raw water is stored, and the treated water supply pipe 11 is circulated connected to the treatment tank 20. It is connected with the tube (29).

Accordingly, the microbubble generating device 10 may be selectively supplied to the raw water stored in the raw water storage tank or the treated water stored in the processing tank.

The process of sterilizing and disinfecting bacteria such as bacteria contained in raw water in a water treatment plant (1 00,100a) using microbubbles having positive charges having the above-described constitution is to sterilize and disinfect the treatment tank 20 first. When the raw water reaches the highest level, the microbubbles having positive charges are supplied to the inside of the treatment tank 20 through the bubble supply pipe and the diffuser by the operation of the microbubble generator 10.

In this case, the microbubble discharged from the diffuser 24 floats to the surface due to buoyancy. At this time, since the microbubble has a positive charge, as shown in FIG. 4, such as bacteria or Escherichia coli having a negative charge. In addition to the bacteria attached to the surface will rise.

And, by generating the ultrasonic wave of a certain intensity by the operation of the ultrasonic oscillator 30 disposed in the processing tank 20, if the generated ultrasonic wave is delivered to the floating micro-bubble, as shown in FIG. By the microbubbles are artificially exploded, by sterilizing the bacteria adhered to the microbubbles by the explosive force of the microbubbles exploding during the rise to the water, the raw water filled in the treatment tank can be converted into drinking water.

In the above, although one preferred embodiment of the present invention has been described, it is clear that the present invention may use various changes, modifications, and equivalents, and may be applied in the same manner by appropriately modifying the above embodiments. Accordingly, the above description does not limit the scope of the invention as defined by the limitations of the following claims.

10: micro bubble generator 12: electrolytic cell
12a, 12b: positive electrode and negative electrode plate 14: pump
16 mixing tank 17 inner nozzle
20: treatment tank 30: ultrasonic oscillator

Claims (13)

An electrolytic cell which electrolyzes the treated water by equipping an inner space to which a predetermined amount of treated water is supplied;
The electrolyzed treated water is supplied under pressure by a pump provided in the middle of the length of the water supply pipe extending from the electrolyzer, and the air supplied through the air inlet control valve is supplied. And a mixing tank having a plurality of internal nozzles in the internal space.
Microbubble generating device having a positive charge is discharged to the outside of the treated water in addition to the fine bubble is given to the positive charge generated during the electrolysis through the outlet of the mixing tank. The method of claim 1,
The inner nozzle includes a plurality of nozzle blocks spaced apart at regular intervals on the inner surface of the mixing tank, and at least one nozzle hole formed through the nozzle block to allow a mixture of the treated water and air to pass through. Microbubble generating device having a positive charge. The method of claim 2,
The nozzle hole is a microbubble generating device having a positive charge, characterized in that extending in a linear or non-linear direction in the discharge direction so as to cause friction between the mixture of the treated water and air passing through it. The method of claim 1,
The air inlet control valve has a positive charge, characterized in that installed in the air inlet pipe connected to the water inlet pipe connected to the treatment water supply pipe for supplying the treated water to the electrolytic cell is connected to the water supply pipe connected to the inlet side of the pump Micro bubble generator. The method of claim 1,
The cathode electrode plate and the anode electrode plate is a microbubble generating device having a positive charge, characterized in that made of any one of iron, aluminum and stainless steel. The microbubble generating device of any one of claims 1 to 5;
A processing tank in which the microbubbles generated in the microbubble generating device are supplied and a predetermined amount of raw water is stored;
And an ultrasonic oscillator for generating ultrasonic waves of a certain intensity when the power is applied to explode the micro bubbles floating on the water surface after being supplied into the treatment tank.
Water treatment apparatus using a micro-bubble generating device having a positive charge characterized in that the sterilization by sterilizing the bacteria attached to the microbubble by the explosive force generated during the explosion of the microbubble. The method according to claim 6,
The treatment tank is a water treatment device using a microbubble generating device having a positive charge, characterized in that connected to the raw water supply pipe having a raw water inlet control valve. The method of claim 7, wherein
The microbubble generating device is a water treatment device using a microbubble generating device having a positive charge, characterized in that it is connected to the circulation pipe connected to the treatment tank so as to receive the recycled treated water sterilized in the treatment tank. The method according to claim 6,
And the microbubble generating device and the treatment probe are disposed in a storage tank for sterilizing and disinfecting in the treatment tank to receive a drinking water and store a predetermined amount thereof. 10. The method of claim 9,
The microbubble generating device is connected to the raw water storage tank and the treated water supply pipe in which a predetermined amount of raw water is stored, and the treated water supply pipe is connected to the circulation pipe connected to the treatment tank, the water treatment using the microbubble generating device having a positive charge Device. 11. The method according to any one of claims 6 to 10,
The treatment tank is connected to a microbubble supply pipe extending from the microbubble generator, the water treatment device using a microbubble generator, characterized in that the diffuser disposed on the bottom surface to supply a microbubble having a positive charge to the treatment tank. 11. The method according to any one of claims 6 to 10,
The ultrasonic oscillator is a water treatment device using a micro-bubble generating device having a positive charge, characterized in that it is arranged at the same height or different heights to the diffuser to supply the microbubble having the positive charge to the treatment tank. 11. The method according to any one of claims 6 to 10,
The microbubble generating device having a fine charge having a positive control, characterized in that it comprises a control unit for controlling the operation time for generating the microbubble having a positive charge and the ultrasonic wave delivered to the microbubble with a positive charge in the ultrasonic oscillator Water treatment device using a bubble generator.

Images