KR20110096012A - Ultra-fine bubble generator and the method thereof for advanced water treatment - Google Patents

Abstract

PURPOSE: A micro-bubble generator, and an advanced water treatment method using thereof are provided to reduce the risk and the initial facility cost of the generator. CONSTITUTION: A micro-bubble generator includes an air pump(51), an underwater pump(60), and a dispersion device(70). The air pump includes a gas flow-meter(22), a motor-operated valve(23), and a gas line(24) for inflowing constant amount of air into a suction unit(63) of the underwater pump. The underwater pump includes a driving unit, a cutter type impeller, and the suction unit. The dispersion unit includes a collision inclined plate, a jet stream formation neck, and an outlet.

Description

Ultra-fine bubble generator and the method approximately for advanced water treatment

In the present invention, in the purification and wastewater treatment process of public water treatment plant, village water supply facility, public sewage treatment plant, wastewater treatment plant, village sewage treatment plant, etc. The present invention relates to an ultra-micropore generating device and an advanced water treatment method using the same, and more particularly, a gas flow meter, an electric valve, and a gas pipe, which introduce constant air into the suction part of a submerged pump, are connected. Air pump; The piping of the RPM inverter, pressure sensor, and gas / liquid vitality mixture, formed of a driving unit, a cutter-type impeller, and a suction unit, which sucks air from the air pump and liquid in the water to generate a gas / liquid vitality mixture Linked submerged pumps; The gas / liquid vitality mixture from the submerged pump is dispersed in the water of the target tank in the form of ultra-fine bubbles of nanometer (nm) to millimeter (mm) size by controlling the gap of the jet port. The dispersing apparatus includes a collision slope plate, a jet stream forming tree, and a jet port; Subsequent to the submerged pump, one or more vacuum ferromagnetic pumps are additionally provided to prevent coalescing of the ultra-micro-foamed bubbles in the pipe even in a pipe of 10 m or more. The present invention relates to an effective method for removing used water pollutant particles.

Due to the continuous industrialization and urbanization, environmental pollution is getting serious day by day, and the shape of discharged sewage, waste water and sewage (hereinafter referred to as 'waste water') is becoming very diverse, and the facilities for its treatment are advanced and treatment costs are increased. There is a situation. In addition, as water contaminants in the wastewater that have not been completely treated are introduced into rivers, lakes, and other water sources, there are many problems in efficient water quality management.

Currently, water and wastewater treatment technologies include physicochemical methods such as precipitation, pressurized dissolved air flotation (DAF), filtration, chemical coagulation, and oxidation treatment, and maximize the metabolism of microorganisms in a bioreactor in which activated sludge is stored. There is a biological treatment method for removing contaminants, which is mainly used for sewage treatment.

The pressure dissolved air flotation (DAF) method, which can easily remove water pollutants by attaching / injuring the ultra-fine cells generated by pressure changes to the surface of water pollutants during the physicochemical high water treatment process, It can be installed and used additionally without major changes to existing treatment facilities, and it has the advantage that it can obtain stable and high efficiency treatment effect not only for water pollutant particles but also for removing total phosphorus (TP). In the method of generating the ultra-fine foam used, the use of pressurized dissolved air in the range of 3-7 kg _f / cm ² requires a high pressure facility such as a pressure pump, an air compressor, a pressure mixing tank, and a high pressure pipe. There is this.

For example, the Republic of Korea Patent No. 10-0446141 is an invention to treat organic wastewater by linking the pressure dissolved air flotation (DAF) and gravity sedimentation by ultra-miniature bubbles, in the invention is mixed with raw water and air bubbles are included in the raw water The main process is floating / sedimentation tank which separates water pollutants contained in raw water from water by raising existing water pollutants to the surface or settling them to the bottom of the surface. Not only can the sludge be floated to reduce the overall contaminant treatment efficiency, but also the method for generating the ultra-fine foam can be pressurized pump and air because it uses pressurized dissolved air of about 5 kg _f / cm ^2. High pressure facilities such as compressors, pressure mixing tanks, and high pressure piping are required.

Therefore, it is important to have an ultra-miniature gun generator that is low in operation risk, low in initial facility cost and required power cost, and can easily control the size of generated bubbles, and is easy to operate even for general people without specialized knowledge. One situation.

For example, the Republic of Korea Patent Publication 10-2009-0037238, using the minus pressure (minus pressure) at the time of operating the helical pump to introduce air from the outside, and to force the incoming air and water to violently hit the rotational force of the helical pump Thereby creating a gas / liquid vitality mixture. This vital mixture is sent to a stationary mixer and stirred / mixed with a stationary mixer to produce an ultrafine gas / liquid vitality mixture. The static mixer is composed of a screw part of an upstream layer and a cutter part of a downstream side, wherein the screw part is composed of a cylindrical main body, a partition rod disposed at an axial center of the main body, and a plurality of protrusions disposed on an inner circumferential surface of the main body. The vigorous mixture is a swirl flow in the process of passing through the screw portion, and the invention relates to an ultra-fine foam generator that can continuously generate an ultra-fine foam of about 0.5 to 3.0 μm while the swirl flow collides with the projection of the cutter. However, there is no disclosure about the means for dispersing the gas / liquid vital mixture in water.

On the other hand, the Republic of Korea Patent 10-0338795, using the ultra-microporous bubbles to separate the various impurities dissolved in the waste water, to constitute a device for generating ultra-fine double membrane bubble, -ionic hydrophilic group and + ionic hydrophobic group In dissolving the surfactant molecules composed of water in water, the surfactant molecule concentration is 10 to 200 ppm, which is the critical micelle concentration, so that the surfactant molecules can be in the micelle colloid state. Here, the bubble-producing stock solution in which air is injected at a pressure of ¹ to 1.5 kg / cm ² is mixed with a stirring mixer. At this time, the surfactant molecules are ionically bonded to the water molecules in a double ultra-fine double membrane bubble (diameter of 2 to 8 μm). It is a micro-miniature bubble generator that generates bubbles formed by a double membrane to form a thin film. Since there is a need to inject, there is a concern that the concentration of sewage water, particularly phosphorus, may be increased.

Republic of Korea Patent No. 10-0902189 discloses an ultra-fine strength bubble generator and a precipitation device using the same, the disclosed device has an inlet space for temporarily storing the raw water flowing through the raw water inlet pipe on one side, in the inlet space A treatment tank provided with a recovery device for removing a floe floating on the surface of the stored raw water; An ultra-miniature bubble generator for generating ultra-miniature bubbles by receiving the treated water containing air bubbles in a portion of the treated water discharged from the treatment tank; And a plurality of inclined plates inclined at intervals parallel to each other on one side of the treatment tank, wherein the raw water is introduced into the treatment tank together with the ultra-fine cloth generated by the ultra-miniature cloth generator, As the flocks in the water float to the surface of the raw water and are first filtered by the recovery device, and the unremoved floes contained in the raw water collide with the inclined plates and settle on the bottom surface of the treatment tank while passing between the plurality of inclined plates. It is characterized in that the secondary filtration, as in the Republic of Korea Patent Registration 10-0446141 it is to generate the ultra-mini strength foam in the pressurized state using a pressure pump.

Republic of Korea Patent Application Publication No. 10-2010-0070040, relates to a cross-moving pressurized floating water purification system using an ultra-miniature gun ion water generator, an inline stirrer; First and second reactors; First and second pressure relief tanks; Sludge outlet; First and second float recovery units; Ultra-fine strength ionized water generator; First and second self-priming pumps; Bucket and; It is configured to include a control unit having a microprocessor, and to transfer the effluent water to the water purification device in a short time, and the oxygen supply and stirring is performed before reaching the water purification device to improve the purification efficiency. Like these, the ultra-compact foam is generated in a pressurized state using an air compressor and a pressure pump.

Republic of Korea Patent No. 10-0466280 is a invention for a multi-function settling chamber combined with the sludge upper portion and the sludge settling portion, the center of the settling tank floats the sludge by the micro-bubbles generated by the compressed air or electrolytic reaction It consists of the flotation part and the sludge sedimentation part where the sludge is settled by gravity sedimentation outside the center, and the anaerobic reaction gas generated by the anaerobic sedimentation of the sludge and the nitrogen bubble generated by the denitrification reaction Sludge precipitated by the flotation again, and the invention is a preferred invention for the circular sedimentation tank of a small wastewater treatment plant, there is a limit to apply to a rectangular sedimentation battery in a large-scale sewage treatment process.

Therefore, in the flotation separation process of water pollutants in the high water treatment method, it is necessary to search for a new method of high flotation of water pollutants, which is easy to install and operate large-scale treatment facilities in terms of economic and technical aspects.

Republic of Korea Patent Registration 10-0446141 (2004.08.18) Republic of Korea Patent Publication 10-2009-0037238 (2009.04.15) Republic of Korea Patent Registration 10-0338795 (2002.05.18) Republic of Korea Patent Registration 10-0902189 (2009.06.03) Republic of Korea Patent Publication 10-2010-0070040 (2010.06.25) Republic of Korea Patent Registration 10-0466280 (2005.01.05)

In order to solve the above problems of the prior art, the present invention provides a high pressure facility such as a pressure pump, an air compressor, a pressure mixing tank, and a high pressure pipe, which were required in the process of generating a micro-foam in the conventional pressure dissolved air flotation (DAF) process. skip; In addition to being able to substitute for normal pressure (normal pressure), it is possible to easily control the size of the bubble in the size of nanometer (nm) to millimeters (mm) during operation, the ultra-low intensity generator for normal pressure operation The purpose is to provide.

In addition, the ultra-mini-foam generated from the ultra-mini-foam generating device is attached to the surface of the water-contaminated particles to float the water, characterized in that to effectively remove the water-contaminated particles, to provide an advanced water treatment method using the ultra-micro-foam. There is this.

In order to solve the above problems, the present invention, the gas flow meter 22, the electric valve 23, and the gas pipe 24 for introducing a constant air into the suction portion 63 of the submerged pump 60 An associated air pump 51; RPM inverter, which is formed of a drive unit 61, a cutter-type impeller 62, and a suction unit 63, and sucks air from the air pump 51 and liquid in the water to generate a gas / liquid vitality mixture. 64, a submerged pump 60 to which the pressure sensor 26 and the piping 29 of the gas / liquid vitality mixture are linked; The gas / liquid vitality mixture from the submerged pump 60 is dispersed in the water in the form of ultra-miniature bubbles of nanometer (nm) to millimeter (mm) size by adjusting the gap (d _o ) of the jet port 83. Dispersing device 70 is formed to include, impingement slope plate 79, jet stream forming tree 82 and the ejection port 83; And one or more vacuum ferromagnetic pumps 66 are additionally provided after the submerged pump 60 to prevent coalescing of the ultra-miniature bubbles in the pipe even in a pipe of 10 m or more. It provides an ultra-miniature gun generator 50 is operated at normal pressure.

In particular, the present invention is characterized in that to remove the water contaminant particles 91 by attaching / injured to the surface of the water contaminant particles (91) generated from the ultra-micro-intensity bubble generator (50), Provided is an advanced water treatment method using the flotation separation method by the ultra-fine strength gun (34).

By providing an ultra-microporous bubble generating apparatus 50 operated at normal pressure according to the present invention to a water treatment process, the following effects can be obtained than in the conventional pressurized dissolved air flotation (DAF) method.

(a) The ultra-mini-foam generator 50 according to the present invention omits a high pressure facility such as a pressure pump 14, an air compressor 15, a pressure mixing tank 16, a high pressure pipe, and a risk and initial facility cost. Can reduce

(b) The ultra-miniature gun generator 50 according to the present invention replaces the high pressure pressure regulator 21, the gas flow meter 22, the electric valve 23, and the high pressure piping (24, 29) for atmospheric pressure Can reduce the initial investment cost

(c) Since the ultra-miniature gun generator 50 according to the present invention is operated at normal pressure, it can reduce the required power costs and maintenance costs.

(d) The ultra-miniature bubble generator 50 according to the present invention can easily adjust the size of generated bubbles to several nanometers (nm) to several millimeters (mm) in size.

(e) In the conventional floating separation facility configured in a complicated manner, by providing and simplifying the ultra-miniature artillery generating device 50 according to the present invention, convenience of operation can be achieved.

(f) Providing the ultra-microporous bubble generating apparatus 50 according to the present invention in various water treatment processes, by attaching / injuring water contaminant particles to remove water particles (SS), total phosphorus (TP), etc. have

(g) The ultra-miniature gun generator 50 according to the present invention can be easily installed in an existing water treatment facility without changing the civil structure, and thus, the existing facility can be easily upgraded to an advanced facility.

(h) Since the ultra-miniature gun generator 50 according to the present invention is a simplified device that is operated at normal pressure, ordinary people who do not have expertise can easily operate.

In addition to the above effects, the ultra-micro-foam (34) generated from the ultra-micro-bubble generating device 50 according to the present invention, microbial reactor, fluidized bed, bubble column, extraction process, machine parts cleaner as well as water treatment process such as purified water / wastewater It can be used in a wide range of places, such as fish farms, aquariums, and public baths.

1 is a front configuration diagram of a conventional conventional pressure-dissolving method ultra-fine foam generator;
Figure 2 is a front configuration diagram of the ultra-miniature gun generator according to the present invention,
3 is a front view of the submerged pump according to the present invention,
Figures 4a, 4b and 4c is a front cross-sectional view, a plan view, and AA planar cross-sectional view of the dispersion apparatus according to the present invention,
5 is a simplified embodiment of FIG. 2;
Figure 6 is an ultra-miniature cloth generation view according to the present invention,
Figure 7 is a simplified configuration of the flotation method using the ultra-miniature artillery generating device according to the present invention.
<Description of the code | symbol about the principal part of drawing>
10: conventional ultra-miniature gun generator 11: target water tank
12: circulation water tank 13: rectifying wall
14 pressure pump 15 air compressor (compressor)
16 pressurized mixing tank 17 liquid intake
18: liquid piping 19: air filter
21: regulator 22: gas flowmeter
23: electric valve 24: gas piping
25: gas distributor 26: pressure sensor
29: Piping of gas / liquid vitality mixture 31: Emergency shutoff means
32: distribution pipe 33: dispersion nozzle (nozzle)
34: ultra-mini century gun 50: ultra-mini-gun gun generator
51: air pump 60: submerged pump
61 drive unit 62 cutter type impeller
63: suction unit 64: RPM inverter (inverter)
66: vacuum ferromagnetic pump 70: diffuser
71: dispersion top plate 72: tightening / loosening groove
73: upper curved plate 74: fastening means
75: dispersed lower plate 76: lower plate curved surface
77: support rod 78: main pipe connecting means
79: crash slope plate 82: jet stream forming tree
83: spout 91: water pollution particles
92: scum removal unit 93: scum outflow pipe

As described above, the floating separation process of water pollutant particles in the physicochemical advanced water treatment process can be additionally installed and used without significant change to the existing treatment facility, and the treatment effect of stable and high efficiency can be obtained. There are advantages, but in terms of economics and technical aspects, a new method of high-float separation of water pollutants should be devised that is not unreasonable even for the installation and operation of large-scale treatment facilities.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the dissolved air flotation (DAF) method, the microbubbles generated by the pressure change in the process of ejecting the supersaturated water under the pressurized state through the dispersion nozzle or the like under normal pressure are floated in the water. It refers to colliding / attaching colloidal material in the water in the process of causing floating materials such as colloids to surface.

Figure 1 is a front configuration diagram of a conventional conventional pressure-dissolving method ultra-microporous generating device, the conventional ultra-mini-foam generating device 10 according to the pressure-dissolving method is largely pressurized gas, liquid pressurization, gas / liquid vitality It consists of a pressurization system for the mixture, a means for dispersing the gas / liquid vitality mixture, a high pressure piping, and the like. More specifically, the pressurized mixing tank 16 holding the liquid sucked through the liquid suction unit 17 (usually called the circulating water with suction of clear treated water) is maintained at a pressure of 3 to 7 kg _f / cm ² . Pressurized pump 14 is connected to the liquid pipe 18, which is pressed into the pressure; The air filter 19, the pressure regulator 21, the gas flow meter 22, the electric valve 23, and the gas pipe (2) which pressurizes and pushes air into the gas distributor 25 in the pressure mixing tank 16 24 is connected to the air compressor (15); A pressure sensor 26 is provided, which mixes the injected liquid and gas at an operating pressure of 3 to 7 kg _f / cm ² and raises the solubility of the injected gas under the high pressure by the applied pressure. Pressurized mixing tank 16; In the pressurized mixing tank 16, the super dissolved air in the supersaturated state is released in a normal pressure state at a moment to induce the generation of the ultra-mini-foam 34, while the ultra-mini-foam in the water of the target tank 11 ( 34, which consists of a piping 29 of gas / liquid vitality mixture, and a dispersion nozzle 33 associated with the distribution tube 32, which is maintained at a constant pressure subsequent to the pressure mixing tank 16. It is preferable that the main body is provided with a pressure regulator 27 for the gas / liquid vitality mixture, an electric valve 28, and an emergency shutoff means 31 that can block a high pressure state in an emergency. However, the ultra-micro-foaming device 10 according to the pressure-dissolving method can generate the ultra-mini-foaming under high pressure operating conditions of 3 to 7 kg _f / cm ² , the use of a high-pressure facility is inevitable to use a high-pressure facility Operation risk, high initial facility cost and required power cost, cumbersome and maintenance costs due to frequent replacement of high pressure parts due to high pressure operation, frequent defects in the dispersion nozzle 33 formed of fine nozzles, There are many problems, such as the need for expertise.

Therefore, FIG. 2 according to the present invention is designed to solve the above problems in the ultra-mini-foam generating device 10 according to the pressure-dissolving method. It is also. 2, the ultra-low intensity gun generator 50 according to the present invention replaces the high-pressure pressurizing pump 14 in the pressure-dissolving method, and it is a submerged pump for atmospheric pressure of about 1 kg _f / cm ^2. 60); A low pressure air pump (51, air pump) in place of the high pressure air compressor (15) in the pressure dissolved method; A dispersing device (70, diffuser) of the gas / liquid vitality mixture in place of the dispersing nozzle (33) formed of the fine nozzle in the pressure dissolving method; And an atmospheric pressure pipe that replaces the high pressure pipe in the pressure-dissolving method.

More specifically, the air flow pump 51 is connected to the gas flow meter 22, the electric valve 23, and the gas piping 24, which injects a constant air into the suction portion 63 of the submerged pump 60 ); RPM inverter, which is formed of a drive unit 61, a cutter-type impeller 62, and a suction unit 63 to suck the air from the air pump 51 and the liquid in the water to generate a gas / liquid vitality mixture. 64), the submersible pump 60 to which the pressure sensor 26 and the piping 29 of the gas / liquid vitality mixture are linked; The gas / liquid vitality mixture from the submerged pump 60 is dispersed in water in the form of ultra-miniature bubbles of nanometer (nm) to millimeter (mm) size by adjusting the gap (d _o ) of the jet port (83). Dispersing apparatus 70 is formed to include, impingement slope plate 79, jet stream forming tree 82, and the ejection opening 83; And one or more vacuum ferromagnetic pumps 66 are additionally provided after the submerged pump 60 to prevent coalescing of ultra-miniature bubbles in the pipe even in a pipe of 10 m or more. According to the ultra-miniature gun generator 50 is configured.

3 is a front view of the submerged pump 60 according to the present invention, and FIGS. 4A, 4B, and 4C are a front sectional view, a plan view, and an A-A plan sectional view of the dispersing apparatus 70 according to the present invention.

Hereinafter, the operation function and method of the ultra-miniature cloth generator 50 according to the present invention will be described in detail with reference to FIGS.

First, in sucking the liquid of the submerged pump 60, the air is naturally sucked from the outside by using the minus pressure applied to the suction unit 63, and the suctioned constant air flow rate is sucked into the cutter impeller ( 62, impeller) and violently collide with the sucked liquid to break it into fine bubbles to form a gas / liquid vitality mixture, and the gas / liquid vitality mixture produced from the above process is a gas / liquid vitality mixture A submerged pump 60 forcibly transferring the pipe 29 through the pipe 29 to the diffuser 70 is configured on the upper side of the water in the circulation water tank 12. The impeller (impeller) of the submerged pump 60 is preferably a cutter type that can finely grind the contaminants that may be present in the water, the rotational force of the cutter-type impeller 62 on one side of the submerged pump 60 By adjusting the, it is preferable to provide an RPM inverter (64, inverter) to adjust the intake amount of the gas, the intake amount of the liquid, the transfer amount of the gas / liquid vitality mixture and the size of the microbubble, the submerged pump 60 A low pressure air pump 51 to maintain a constant flow rate of air naturally sucked by the negative pressure formed in the suction unit 63; Gas flow meter 22; And an electric valve 23 operated in conjunction with the pressure sensor 26 is preferably provided on the gas pipe 24. Further, after the submerged pump 60, the changed pressure signal of the pressure sensor 26 generated from defects such as clogging of foreign matters and loosening of the dispersing device 70 is generated on the gas pipe 24. It is another feature of the present invention to automatically adjust the flow rate of the air delivered to the provided electric valve (23).

In a general liquid pump, the inflow of air causes cavitation in the liquid pump to lose the suction power of the liquid. The submerged pump 60 according to the present invention of FIG. It is located in a positive pressure atmosphere and does not have a suction lift, so that no amount of air is introduced, so that the cavitation is not much higher than that of the ground pump. In the practical embodiment of the submerged pump 60 of the present invention, the liquid intake amount (volume unit) to the air intake amount (STP; volume unit in terms of standard temperature / standard pressure condition) is up to 4.0 vol%, and the intake amount of the liquid is somewhat It was found to be reduced but not significantly affected by cavitation. In addition, by adjusting the air flow rate flowing into the submerged pump (60) it was possible to adjust the size of the ultra-miniature cloth (34) generated finally, that is, in the amount of air inlet to 0.01 to 0.5 vol% Nano-scale ultra-fine bubbles, 0.5-1.5 vol%, micro-meter-sized fine bubbles, and air inflow (volume) compared to liquid intake At 1.5 to 4.0 vol%, coarse bubbles of millimeter size were generated. The size of the generated bubbles can be easily adjusted by adjusting the flow rate of the air flowing in during the operation of the submerged pump (60).

The gas / liquid vitality mixture generated from the above process is a submerged pump through a pipe 29 and a distribution tube 32 of the gas / liquid vitality mixture to a diffuser 70 located in the water tank 11. After being conveyed by the discharge pressure of 60, the ultra-low intensity gun 34 is once again caused by the turbulence intensity and the jet stream generated by the collision slant plate 79 and the jet stream forming tree 82 of the dispersing apparatus 70. It is split into and dispersed in the water of the target tank (11). 4A, 4B, and 4C are a front sectional view, a plan view, and an AA planar sectional view of the dispersing device 70 according to the present invention, wherein the dispersing device 70 according to the present invention of FIG. Unwinding groove 72 is formed, the lower side of the upper surface of the curved surface 73 and the fastening fixing means 74, the dispersion top plate 71 is formed in linkage; Dispersion lower plate 75 in which the lower plate curved surface 76, the support bar 77, and the main pipe connecting means 78 is formed in linkage; And a plurality of collision inclined plates 79 formed inside the support bar 77 and having a nut-type fastening means 81 linked thereto.

The gas / liquid vitality mixture conveyed by the discharge pressure of the submerged pump 60 vibrates with a plurality of collision inclined plates 79 formed inside the dispersing device 70, and increases its turbulence intensity to the extreme. After splitting into the ultra-fine foam, the flow rate of the gas / liquid vitality mixture in the jet stream forming tree 82 formed from the upper plate curved surface 73 and the lower plate curved surface 76 is accelerated at the jet air velocity, and the gas of high velocity The liquid-liquid mixture is ejected to the jet port 83 formed from the gap d _o of the dispersion top plate 71 and the dispersion bottom plate 75 and once again collides with the liquid in the water tank 11 to the ultra-fine foam 34 again. It is split and dispersed in the water of the target tank 11. Here, by adjusting the space volume of the jet stream forming tree 82 and the gap (d _o ) of the jet port 83, it is possible to adjust the size and shape of the ultra-fine foam 34 generated from the process, bolt type The fastening fixing means 74 and the nut-type fastening means 81 are characterized in that the space volume of the jet stream forming tree 82 and the gap d _o of the jet port 83 can be easily adjusted. In the present invention, in the practical embodiment of the jet port 83, a gap (d _o ) of 2 to 10 mm is preferable to generate the ultra-miniature bubbles, and the phenomenon of coalescence of the ultra-mini-foam bubbles in the pipe even in a pipe of 10 m or more is preferable. In order to prevent this, it is preferable to configure one or more vacuum self-priming pumps 66 in connection with the submerged pump 60.

As described above, the size and distribution form of the ultra-miniature gun 34 generated from the ultra-miniature gun generator 50 according to the present invention, a) the air flowing into the inlet portion 63 of the submerged pump 60 Control of flow rate; b) rotational force adjustment of the cutter-type impeller 62 of the submerged pump 60; And c) by adjusting the gap (d _o ) of the dispersing device 70, the jet port 83, it can be easily adjusted to the size of the bubble desired by the driver.

FIG. 5 is a simplified embodiment of FIG. 2, which is an ultra-miniature cloth generator 50 according to the present invention, and FIG. 6 is a generation diagram of the ultra-fine cloth 34 according to the embodiment of FIG. By adjusting the air flow rate flowing into the inlet portion 63 of the submerged pump 60 and the gap d _o of the spout 83 of the dispersing apparatus 70, the millimeter (FIG. 6A), the micron (FIG. 6B), and It is possible to freely generate the ultra-miniature gun 34 of nano (Fig. 6c) size. The submerged pump 60 used in the embodiment of FIGS. 5 and 6 is a 0.2 hp HP impeller pump and was carried out in an actual ecosystem of 500L.

FIG. 7 is a schematic configuration diagram of a flotation method using the ultra-micropore gun generator according to the present invention. When adhered to the surface of the particles 91, the water contaminant particles 91 to which the ultra-miniature foam 34 is attached are floated to the surface by buoyancy, and the water contaminant particles 91 floated to the surface are scum. The removal unit 92 and the scum outflow tube 93 can be installed and removed easily. The above-mentioned floating method is not the conventional pressure dissolved air flotation method (DAF), but the floating separation method of water contaminated particles by ultra-fine foam.

As described above, when the ultra-miniature gun generator 50 according to the present invention is applied to the water treatment process of water purification and wastewater facilities, it is easily upgraded to an advanced flotation separation facility operated at atmospheric pressure to effectively remove water pollutant particles. In addition, it can simplify the complicated conventional pressurized flotation separation facility.

Claims (5)

In the ultra-mini-foam generating device which generates the ultra-mini-foam in water,
The ultra-mini strength gun generator,
An air pump 51 having a gas flow meter 22, an electric valve 23, and a gas pipe 24 connected to the suction unit 63 of the submerged pump 60 to connect the air;
It is formed of a drive unit 61, a cutter-type impeller 62, and a suction unit 63, the pressure sensor to suck the air from the air pump 51 and the liquid in the water to create a gas / liquid vitality mixture ( 26) and the submerged pump 60 in which the piping 29 of the gas / liquid vitality mixture is connected and configured; And
Collision inclined plate 79, jet airflow forming tree to disperse the gas / liquid vitality mixture from the submerged pump 60 in the form of ultra-miniature bubbles of nanometer (nm) to millimeter (mm) size And a dispersing device 70 including 82 and a blower outlet 83 formed therein.
Ultra-miniature gun generator 50, characterized in that for generating ultra-miniature guns under the operating conditions of less than 1 kg _f / cm ² . The method according to claim 1,
One side of the submerged pump (60), the RPM inverter 64 is connected to the configuration, by adjusting the rotational force of the submerged pump (60), the pumping amount of the submerged pump (60); And it is configured to include a submerged pump 60, to adjust the size of the bubble is ejected,
Ultra-miniature gun generator 50, characterized in that for generating ultra-miniature guns under the operating conditions of less than 1 kg _f / cm ² . The method according to claim 1,
The inside of the dispersing device 70, a fluid fastening fixing means 74 is provided, by adjusting the gap (d _o ) of the jet port 83, thereby the size of the bubble ejected from the dispersing device 70, It comprises a dispersing device 70, which can be adjusted to the bubble size in the range of nanometer (nm) to millimeter (mm),
Ultra-miniature gun generator 50, characterized in that for generating ultra-miniature guns under the operating conditions of less than 1 kg _f / cm ² . The method according to claim 1,
In the piping of 10 m or more, in order to prevent the coalescence of the ultra-mini-foam bubbles in the piping, one or more vacuum ferromagnetic pumps 66 are formed in succession after the submerged pump 60,
Ultra-miniature gun generator 50, characterized in that for generating ultra-miniature guns under the operating conditions of less than 1 kg _f / cm ² . In the floating separation process of removing water contaminant particles by attaching / injuring ultra-fine cells on the surface of water contaminant particles during the advanced water treatment process of water treatment and sewage treatment facilities,
The ultra-mini-foam generator 50 for generating the ultra-mini-foam gun,
An air pump 51 having a gas flow meter 22, an electric valve 23, and a gas pipe 24 connected to the suction unit 63 of the submerged pump 60 to connect the air;
RPM inverter, which is formed of a drive unit 61, a cutter-type impeller 62, and a suction unit 63 to suck the air from the air pump 51 and the liquid in the water to generate a gas / liquid vitality mixture. 64) the submerged pump 60 in which the pressure sensor 26 and the piping 29 of the gas / liquid vitality mixture are connected and configured;
The gas / liquid vitality mixture from the submerged pump 60 is dispersed in water in the form of ultra-miniature bubbles of nanometer (nm) to millimeter (mm) size by adjusting the gap (d _o ) of the jet port (83). Dispersing apparatus 70 is formed to include, impingement slope plate 79, jet stream forming tree 82, and the ejection opening 83; And
Subsequent to the submerged pump 60, one or more vacuum ferromagnetic pumps 66 are additionally provided to prevent coalescing of the ultra-miniature bubbles in the pipe even in pipes of 10 m or more;
The ultra-mini-foam 34 is characterized in that the ultra-mini-foam 34 generated from the ultra-mini-foam generating device 50 is attached / injured to the surface of the water-contaminated particles 91 to remove the water-contaminated particles 91. Advanced water treatment method using).

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