KR100528104B1 - Method of improving the quality of water using micro-bubble ozone - Google Patents

Abstract

The present invention relates to a water purification method using microbubble ozone. In the past, ozone was introduced into water to promote oxidation, promote dissolution, or decompose harmful substances, but it was difficult to increase the dissolved oxygen rate. It was difficult to dissolve this low ozone, and it was not possible to achieve a sufficient effect because the corresponding bubble was large, the contact area with water was small, the buoyancy was large, and the contact time with water (liquid) was short. I want to solve it.

The present invention is capable of supplying ultra-fine microbubble ozone having high dissolution efficiency in water by combining an ozone generator and a microbubble generator of an underwater pump, and at the same time, the ability of the ozone generator to be installed on land and the best It is possible to determine the number of installations of the submersible pump-type microbubble generating device installed in an effective place.

Thus, by supplying the most efficient amount of microbubble ozone to the water to be treated, the ozone concentration can be increased to the maximum. In this way, the strong oxidation, sterilization, deodorization and bleaching activities exceeding hydrogen peroxide can be achieved. As expected, dioxin-based water purification, decomposition of harmful substances such as PCBs and nonylphenols, and the promotion of oxidation of organic matters in water, sterilization of bacteria, countermeasures for red tide, removal of green algae Needless to say, it is very effective in disinfecting and discoloring deodorization and wastewater treatment, and making a significant contribution to social and economic activities.

Description

Method of improving the quality of water using micro-bubble ozone}

The present invention relates to a water purification method using microbubble ozone. More specifically, ozone is generated efficiently by an ozone generator, and the ozone is used as a microbubble generator of an underwater pump method to produce water by using microbubbles. Injecting and contacting to ensure high efficiency dissolution rate of ozone, and decompose organic matters in water by using strong oxidizing and sterilizing properties, reducing COD and BOD, and purifying water quality and at the same time The present invention relates to a water purification method using microbubble ozone in which the occurrence of water or red tide is prevented.

In general, ozone has a strong oxidation and sterilization effect that surpasses hydrogen peroxide, but its low solubility in water is a problem.

Currently, most of the methods of dissolving ozone in water are bubbles with large bubbles and are dissolved in water, and thus, a large amount of ozone must be generated.

Nevertheless, various environmental and social problems, including water purification, must be solved by the beneficial use of ozone.

For example, Korea and Japan are the only countries in the world that use chlorine for disinfection of waterworks, and therefore, the incidence rate of gastric cancer and colorectal cancer is over 60%. This is because chlorine is involved in the digestion of the stomach and harmful substances are generated, which is likely to affect our health directly or indirectly. Chlorine also contributes to the generation of dioxins in incinerators and is believed to be involved in the generation of trihalomethane in downstream regions.

Public sewage, agricultural village wastewater and manure treatment facilities accept and clean up manure and household wastewater.However, our meals consume more than 200pg of dioxin, the most harmful substance per day, and most other environmental hormones. Although they are excreted in vitro, they are currently being drained without harmless treatment, which is causing a vicious cycle ingested by our meals from the river to the sea and through the food chain.

In this chain, variations in fish and shellfish, species reduction, and depletion of populations are occurring, and environmental hormones, such as dioxin, are hampering our health, including teratogenicity, carcinogenicity, feminization and masculinity contraction.

In addition, O-157, red bacteria, and other pathogens exist in the environment, and infection by them has become common. However, the effect is not achieved by sterilizing tap water with hypochlorous acid or sterilization or sterilization by other drugs. Can't expect In addition, surfactants, which are a kind of environmental hormones contained in soaps and various detergents, and nonylphenols (the surfactants are biodegradable), which are the most present in the environment, are affected by fish and these environmental hormones are affected. Teratogenicity and mesogenic incidence of action are reported to be 0.17 μg / l. If the river or the sea is contaminated above this concentration, a fertility phenomenon occurs due to massification, resulting in extinction of various fish species and reduction of population.

In addition, the surfactant may inhibit the baby's apnea and may die depending on the concentration. In addition, since seaweed germination is detrimental, there is a situation that the impact of sluggish coastal fishing, seaweed farming, etc. is concerned due to the reduction of fish and shellfish caused by the iso-yake (decline or dryness of the seaweed community) phenomenon in the rivers and seas. Incidentally, in the East Sea jointly conducted by the Japanese government and the German university, the concentration of nonylphenol in every 100m depth was 2pg / ℓ at 100m depth, and 145pg / ℓ, which is about 70 times at 1,000m depth. It became apparent that there was a high concentration in the depths of the genus.

For this reason, ozone water purification and green algae removal methods have been developed, but since the bubble diameter of ozone to be injected into and contact with water is a bubble having a large particle diameter of about 0.2, 0.3 to 2, 3 m, contact with water to be treated Due to its small area, its high floating speed, and its short contact time with the water to be treated, it is not possible to expect a sufficient catalytic oxidation effect with suspended organic matter in water. For this reason, studies have been conducted to increase the effect by adding a larger amount of ozone, but the initial cost due to the enlargement of the facility is increasing and the running cost is increasing.

For these reasons, new technologies have been eagerly developed that can inexpensively and reliably, more safely, purify water, remove algae, prevent red tide, deodorize, and decompose and sterilize harmful substances such as environmental hormones.

An object of the present invention is to research and develop in order to solve the conventional problems as described above.

The present invention focuses on the strong oxidation and sterilization, deodorization and decolorization, which surpasses the hydrogen peroxide of ozone. By introducing and contacting ozone made of ultra-fine microbubbles with a particle diameter of around 20 µm in water, micro-microbubbles do not coalesce in water and drift into the water as it flows. A lot of contact time and contact area can be secured especially.

Therefore, it exhibits high contact oxidation effect and sterilization effect on suspended organic matter, green algae, pathogens, etc., inexpensive, safe and more securely and more reliably, water purification, decomposition of harmful substances, removal of green algae, discoloration, deodorization, sterilization and insecticide. It aims to use for doing.

The present invention for achieving the above object has the following features.

Firstly, as a microbubble generating device using a water pump method, by supplying microbubble ozone centered on a bubble of 10 to 20 µm, the contact area and water contact time with water are increased, and the method currently used. With less ozone input and less time, the catalytic oxidation effect such as water purification can be enhanced.

Secondly, the microbubble generator is a water drop type, and the deeper the depth, the greater the force of the generated microbubble ozone, and the smaller the bubble, for example, at 10m depth, the microbubble becomes finer, It does not float simply because it floats on the water stream, and ozone does not need to be treated with waste ozone because it is oxygenated and dissolved in water by contact oxidation or self-oxidation with organic substances in water.

Thirdly, the present invention is a combination of an ozone generator installed on the ground and a microbubble generator installed in the water, and the microbubble generator can be freely increased or decreased depending on the quantity of water to be treated. It is possible to treat up to 30 million tons of dams in a small controlled pond.

Fourthly, the ozone generating device of the present invention generates oxygen from water and generates hydrogen, which is inevitably incidental, and can be used as a fuel for fuel cells or automobiles, which are expected to be practically used in the future. The initial cost and running cost can be reduced.

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As a general feature of this device, the power consumption is 220V 50A or 60A and 110V 50A or 6OA, and the device is used under ozone atmosphere, so each part is made of silicon, vinyl chloride, stainless steel and titanium, for example. shall.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described based on FIG.

The ozone generator (O 3 dev.) Is a device that generates ozone of 20% or more by generating and separating oxygen from water. The ozone generator O 3 dev. May use an ozone generator by electric discharge or an ozone generator by ultraviolet irradiation. At this time, the ozone generator (O 3 dev.) Is a known general ozone generator. However, the ozone generator which extracts oxygen by electrolyzing water among known ozone generators, but this is also not limited in the present invention, and generally uses an ozone generator that generates ozone from air or water. . For those skilled in the art, such an ozone generator (O 3 dev.) Is a very general device, so a detailed description thereof will be omitted.

The ozone delivery hose (2) supplies ozone generated in the ozone generator (O 3 dev.) To a microbubble generator (mb dev.) Of an underwater pump type in which ozone is introduced into the water from a blower built in the apparatus. .

The rope 3a is provided between two or more shores 4 so that the entire underwater device does not flow by wind or water flow, and the shore 4 holds the entire underwater device with the rope 3a.

The anchor 5 prevents the entire microbubble generating device (mb dev.), Which is an underwater device, from being floated when installed in a place where the water flow is fast.

The buoy 6 prevents the rope 3a from sinking in water by the weight of the microbubble generating device mb dev. The rope 3b is to suspend the submersible pump-type microbubble generator (mb dev.) In water and to adjust the depth at the same time. The deeper the depth, the finer the particle size of the microbubble and the effect can be expected. Therefore, the microbubble generator (mb dev.) Of the water pump type is fixed at a height of 1 to 2 m from the bottom so that the water depth is measured and the bottom mud is not stirred.

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The hydrogen storage tank 9 is a container for storing hydrogen inevitably generated in an ozone generator (O 3 dev.) That decomposes water to form ozone.

A description will be given with reference to FIGS. 2 to 4 which are preferred embodiments of the microbubble generating device mb dev. Of the present invention.

The submersible motor 10 is connected to an electric cord 11 that receives commercial power from the ground, and the output rotating shaft 12, which is a rotor of the submersible motor 10, together with the microbubble generating impellers 13 and 14. It is used as a maneuvering force to generate very fine microbubbles by rotating about 3000 ~ 6000 times per minute.

The microbubble generating impellers 13 and 14 are installed in two stages at predetermined intervals on the output rotating shaft 12 of the submersible motor 10, which is radial when viewed from the bottom so as to crush bubbles with a large particle diameter. As a result, a plurality of rotary blades 13a having stepped teeth are formed in a sawtooth shape. The upper surfaces of the microbubble generating impellers 13 and 14 are irrelevant to the microbubble generation, so it is preferable to form a flat surface in order to minimize resistance with liquid.

The lower end of the submersible motor 10 is equipped with an impeller protection member 15 for discharging the microbubbles while surrounding the microbubble generating impellers 13 and 14, and the impeller protection member 15 is an underwater motor 10. The partition walls 15a, 15b, and 15c extend from the lower surface of the bottom surface thereof, and the filter-shaped cross section filter 15d is covered on the lower ends of the partitions 15a, 15b and 15c. Since the partition walls 15a, 15b, and 15c efficiently discharge microbubbles generated by the rotary blades 13a of the microbubble generating impellers 13 and 14, slits are formed, and particularly, micro The bulkhead 15b of the outer part of the bubble generating impeller 13 is discharged only through the upper part of the partition wall 15a in which only microbubbles are formed, and bubbles having a large particle diameter of the remaining microbubbles are formed on the upper part of the microbubble generating impeller 14. It is formed by the partition wall 15b without a slit so that the furnace flow is guided.

The slit-formed partition walls 15a and 15c have a smaller slit as they rise upward from the lower portion of the microbubble generating impellers 13 and 14 so as to break or break the bubbles more finely.

The filter 15d prevents inhalation of mud, small stones, sand, or ozone foreign substances, etc., which may cause the occurrence of microbubbles or failure.

In addition, the submersible motor 10 is provided with an ozone injector 16 to supply ozone from the ground to the microbubble generating impeller 13, which is ozone (or air) from the ground compressor. Is supplied to the submersible motor 10, and the branch injection nozzle 16c is provided at the end of the ozone injection hose 16a at the bottom of the center of the microbubble generating impeller 13; The ozone injection pipe 16b is connected to be positioned.

The two-stage microbubble generating impellers 13 and 14 fixed to the output rotating shaft 12 of the submersible motor 10 are specifications of large-capacity processing, that is, a large apparatus, and small and medium specifications for small-volume processing are required. If you need to create a relatively large microbubble, and the water flow to rise to the surface by pressure and injury, it is possible to respond by installing one of the two stage microbubble generating impeller (13, 14) Can be.

In the figure, reference numeral 16d denotes an adjustment valve for adjusting the amount of ozone (air) injected through the ozone injection hose 16a.

The water purification method using the microbubble ozone according to the present invention configured as described above will be described.

First, throw water where the aeration of water is needed, for example, improving water quality in closed waters such as lakes, swamps, dams, red tide measures and water flower removal, oxygen deficiency measures, oxygen supply and purification of farms, and merger septic tanks. Start with it set.

First, when the switch is turned on and power is applied to the ozone generator (O 3 dev.) And the underwater motor 10, the high concentration of ozone generated from the ozone generator (O 3 dev.) Causes the ozone injection hose 16a to be turned on. As soon as it is injected through the output shaft 12 of the underwater motor 10 is rotated. As the output rotation shaft 12 is rotated as described above, the microbubble generating impellers 13 and 14 on the output rotation shaft 12 begin to rotate, thereby discharging the water radially through the partition walls 15a and 15c in which the slit is formed. Will be. At the same time, a phenomenon in which water is sucked through the filter 15d below the partition 15a is repeated. The filter 15d prevents inhalation of mud, small stones, sand, or ozone foreign substances, etc., which can cause the occurrence of microbubbles or failure.

In this state, when the ozone supplied from the ozone generator (O 3 dev.) Is supplied through the branch injection nozzle 16c via the ozone injection hose 16a and the ozone injection pipe 16b, the microbubble generating impeller 13 Due to the radial blade (13a) formed radially to push the water adjacent to the rotary blade (13a) radially.

Therefore, since negative pressure is generated in the central portion of the microbubble generating impeller 13, the ozone supplied to the branch injection nozzle 16c rises to the central part of the microbubble generating impeller 13. The ozone injection hose 16a is connected to the ozone injection pipe 16b because of its convenience for movement. The branching nozzles 16c are branched into several parts to prevent the bubbles of the microbubbles from expanding when a large amount of air is injected at a time.

At this time, if the amount of ozone supplied from the compressor is large, the bubbles of the microbubbles are similarly large. Therefore, it is necessary to provide the finest microbubbles by providing the adjustment valve 16d in the ozone injection hose 16a and adjusting them. .

Thus, when ozone reaches the central portion of the microbubble generating impeller 13, finely crushed and broken by the step of the rotary blade 13a that rotates at high speed to generate the finest microbubbles. This is largely due to the shape and rotation speed of the generating impeller 13.

In other words, since the shape of the rotary blade 13a of the microbubble generating impeller 13 is radial when viewed from the bottom and is serrated when viewed from the side, when rotating at high speed, that is, the center part of the microbubble generating impeller 13, that is, the rotary blade The contracted portion of (13a) is in a vacuum state, and when the ozone (air) mass is sent there, it is finely crushed and split into microbubbles. The lower portion of the microbubble generating impeller 13 is radially swirled in the rotational direction thereof, and heavy water (liquid) hits the partition wall 15a in which the slit is formed by centrifugal force and discharges it outward from the slit. It is becoming. At this time, since the microbubble refined has little buoyancy, it is discharged together with water (liquid) through the bottom of the partition wall 15a in which the slit is formed.

On the other hand, bubbles that have not yet been miniaturized by the rotary blades 13a of the microbubble generating impeller 13 have a buoyancy as the larger bubbles have a larger buoyancy, so even if they try to be discharged through the upper portion of the partition wall 15a in which the slit is formed. Since it hits the partition 15b which does not have a slit, it cannot pass. Therefore, when a relatively large bubble that is not refined rises upward by the partition 15b without a slit, the microbubble generating impeller 14 due to the swirl flow generated as the microbubble generating impeller 14 in the upper position is also rotated at a high speed 14 It is fed upwards toward the center of the center.

Subsequently, the process of refining the bubbles is refined by the rotary blade 13a of the microbubble generating impeller 14 by the method described above, and all directions along with water (liquid) through the partition wall 15c in which the slits are formed. Is discharged.

At this time, the microbubbles discharged from the microbubble generating impellers 13 and 14 are generated in a range of 10 to 30μ, which is extremely fine. Therefore, when the same amount of ozone is introduced into a liquid, it is possible to contact and dissolve and promote oxidation very efficiently. Done.

Therefore, since the microbubbles generated in the device of the present invention are very fine, the floating speed is slow and drifting according to the water current in the water, and it is possible to dissolve oxygen in the water efficiently, so that ozone (air) is introduced into the water for a certain time. The dissolved oxygen rate can be maximized.

In addition, if it is determined that the water to be treated has achieved the purpose of purifying water, etc. by the input contact of ozone, the operation of the ozone generator (O 3 dev.) Is stopped to stop the ozone input and the ozone generator (O 3 dev.) Is stopped. It is a matter of course that the water quality can be purified by supplying only air (oxygen) by replacing with a compressor (not shown) to generate microbubbles.

For example, in an experiment using a microbubble generator (mb dev.) With an 750-watt submersible pump, blue seaweed powder of 13,000 tons of water can be treated in a week, and water quality can be treated for two weeks. Since the purification is realized, it is sufficient to determine the number of units to be put in the water by how much water purification of the amount of the object to be treated is performed and for what period.

As described in detail above, the present invention combines an ozone generator and an underwater pump type microbubble generator that can make ozone into a microscopic microbubble centering on a particle diameter of 10 to 20 µm. It is possible to increase ozone's strong oxidation and sterilization effect to the limit by directly in the water of the closed water.

In this regard, the present invention can be effectively used in the following fields.

1.Water purification, sterilization and deodorization of rivers, dams and lake swamps

2.Prevention of green algae and red tide in rivers, dams and lake swamps

3. Harmless to harmful substances such as rivers, dams and lake swamps

4. Purification, disinfection, deodorization and discoloration of the treated wastewater such as barn, piglet and house.

5. Advanced treatment of purification lamp drainage

5.Water purification and sterilization of bath

In addition, in the ozone generator according to the present invention, since hydrogen is inevitably separated and extracted, it can be utilized as a raw material of a fuel cell, a fuel of a hydrogen engine, and the like, which will be put to practical use in the future. It can contribute to the reduction.

1 is an explanatory diagram for explaining the water purification method using the microbubble ozone of the present invention.

Figure 2 is a cross-sectional view showing an extract of the microbubble generating device according to the present invention.

Figure 3 is a perspective view of the impeller only in FIG.

4 is a bottom view of FIG. 3.

<Explanation of symbols for main parts of drawing>

2: ozone delivery hose 3a, 3b: rope

4: prop 5: anchor

6: buoy 9: hydrogen storage tank

10: submersible motor 11: electric cord

12: output shaft 13, 14: microbubble generating impeller

15: impeller protective member 15a, 15b, 15c: partition wall

15d: filter 16: ozone injector

16a: ozone injection hose 16b: ozone injection pipe

16c: branch injection nozzle mb dev .: microbubble generator

O ₃ dev .: High concentration ozone generator

Claims (5)

In the ozone generator which separates oxygen from water and generates ozone from the oxygen, The ozone generator is installed on land, and the ozone generated from the ozone generator is connected to the ozone generator and the microbubble generator, so that the ozone delivery hose is connected to the blower pressure of the blower built in the ozone generator. The ozone of the ozone generator is transferred to the microbubble generator placed in the water, and the props which are set up at both shores so as not to flow along the wind or the water flow, the rope which is laid over the props, and the microbubble generators The microbubble generating device floated in the water by using a rope with buoys to float at a predetermined depth and anchors to prevent them from moving generates microbubble ozone in the water and makes contact with water to be treated by harmful substances. Microber to remove decomposition, water purification, sterilization and green algae, red tide, etc. Water purification method using ozone. delete The water purification method using microbubble ozone according to claim 1, wherein when the water to be treated reaches the water quality standard set by the ozone injection contact, ozone is stopped and air or oxygen is sent to generate microbubbles. The water purification method according to claim 1, wherein while extracting and storing hydrogen inevitably generated from the ozone generator in a hydrogen storage tank, microbubble ozone is used. According to claim 1, when the ozone generator is small, even if the storage of hydrogen is not economical, if the economy is not good, water purification using microbubble ozone to increase the purification effect by heating the sewage with heat generated at this time to increase the purification effect Way.