KR20210058356A - Water treatment apparatus for purifing waste water using micro-bubbles - Google Patents

Abstract

The present invention relates to a water treatment apparatus and, more specifically, to a water treatment apparatus which uses microbubbles to allow foreign substances in water, such as tap water, recycled water, sewage, and wastewater, to be treated to float on the water and be removed and uses a multistage filter to remove various harmful substances contained in the water to be treated so that the amount of dissolved oxygen is increased and the water to be treated is effectively purified. According to the present invention, the water treatment apparatus comprises: a first filter generating a spiral swirling flow in water to be treated supplied through a supply line to pre-treat and filter foreign substances by the difference in specific gravity; a cylindrical flotation tank into which the water to be treated pretreated by the first filter flows; a bubble water supply means connected to the flotation tank to supply bubble water to the inside of the flotation tank to allow foreign substances in the water to be treated introduced into the flotation tank to float on the surface; a second filter filtering foreign substances from the water to be treated flowing out of the flotation tank with a filter medium; and a third filter filtering the remaining foreign substances and microorganisms through a filtration membrane for the water to be treated filtered in the second filter.

Description

Water treatment apparatus for purifying tap water, heavy water, sewage and wastewater using micro-bubbles

The present invention relates to a water treatment apparatus, and more particularly, by using fine bubbles to float and remove foreign substances in water to be treated, such as water, heavy water, sewage, and wastewater, and at the same time, contained in the water to be treated using a multi-stage filter. It relates to a water treatment device capable of effectively purifying water to be treated while increasing the amount of dissolved oxygen by removing various harmful substances.

In general, water treatment devices of various principles and structures have been developed according to the nature of the water to be treated, and water treatment methods and devices that combine physical and chemical methods or physical and chemical methods have been provided. There are two types of methods: sedimentation, in which impurities are collected by sedimentation under the surface of the water, and flotation, in which impurities are collected by floating above the water surface.

The precipitation method has mainly used a method of removing the precipitated impurities by precipitating various impurities mixed in raw water with a chemical or physical method, but expensive costs are consumed due to chemicals used for wastewater treatment. There is a drawback of not being completely treated, and there is a drawback that a long process and many processes are consumed until treatment is harmless to the human body.

In addition, the conventional water treatment apparatus according to the flotation method passes through a mixing tank for adding chemicals to the influent, pressurizes air and influent water with a pressure pump, stores it in a pressure tank, and supplies the pressurized influent water to a floating tank, which is a water treatment tank at atmospheric pressure. The pressurized influent water generates bubbles in the inflow water of the water treatment tank at atmospheric pressure, and these bubbles collect impurities in the inflow water and float the impurities by the buoyancy of the bubbles, and the impurities floating on the water surface were removed with a skim skimmer, which is a device for removing impurities.

However, the conventional water treatment apparatus according to the flotation method has a limitation in that it is difficult to remove the solid foreign matter having a large specific gravity because it floats the foreign matter only by the buoyancy of the bubbles. In addition, since the conventional water treatment apparatus generates bubbles by directly injecting air into the inflow water, there is a problem that the size of the bubbles cannot be miniaturized. The larger the bubble size, the shorter the residence time in the influent water, so the ability to trap impurities inevitably decreases.

The present invention was created to improve the above problems, and water treatment capable of improving water treatment efficiency by first separating solid foreign substances with a relatively high specific gravity contained in the water to be treated before removing foreign substances in the water to be treated by bubbles. Its purpose is to provide a device.

Another object of the present invention is not to inject air into the water to be treated to generate bubbles in the water to be treated, but to increase the residence time by increasing the rate of generation of fine bubbles by mixing the bubble water in which fine bubbles are generated into the water to be treated. It is to provide a water treatment device capable of effectively removing impurities by floating impurities by fine bubbles.

The water treatment apparatus of the present invention for achieving the above object comprises: a first filter for pre-filtering foreign substances by a difference in specific gravity by generating a helical swirling flow in the water to be treated supplied through a supply line; A cylindrical floating tank through which the water to be treated pretreated in the first filter flows into the interior; A bubble water supply means connected to the floating tank to supply the bubble water into the floating tank in order to float foreign substances in the water to be treated flowing into the floating tank to the surface of the floating tank; A second filter for filtering foreign matters through a filter medium for the water to be treated flowing out of the flotation tank; And a third filter for filtering residual foreign matter and microorganisms through a filtration membrane for the water to be treated filtered by the second filter, wherein the bubble water supply means includes a water storage tank in which water is stored, the water storage tank, and A pump connected to a first connection pipe to suck water stored in the water storage tank and discharge it to a second connection pipe, an intake pipe installed in the first connection pipe to suck gas, and connected to the second connection pipe A pressure chamber for storing the number of bubbles discharged from the pump at a set pressure, and a venturi member connected to the pressure chamber and a third connecting pipe are installed on the upper side, and a mixing tank in which the bubble water is injected downward, and the venturi member are installed. A nozzle in communication with the throttling flow path, a gas return pipe having one end connected to the nozzle and the other end exposed to the interior of the mixing tank so that the gas separated from the bubble water introduced into the mixing tank is sucked into the throttling flow path, and the mixing It is characterized in that it comprises a pulverizing unit connected to the tank and the fourth connecting pipe to pulverize the bubble water flowing out of the mixing tank to flow into the floating tank.

The first filter includes a cylindrical body having a space of a predetermined size therein, and an induction tube formed on a side of the body to guide water to be treated to be transferred through the supply line to be introduced along an inner wall surface of the body, A guide blade formed in a spiral shape along the inner circumferential surface of the main body to form a swirling flow of the treated water introduced through the guide pipe, and a settling part in which foreign substances in the treated water are precipitated due to a difference in specific gravity And, a sediment discharge pipe connected to the bottom of the main body to discharge the sediment deposited in the sediment to the outside, and to prevent the sediment deposited in the sediment from floating between the guide blade and the sedimentation unit. A conical sediment injury-preventing bulkhead having a through hole in the center, a blocking bulkhead installed above the guide blade to circulate the water to be treated to the upper portion of the main body through a circulation hole formed in the center, and a distribution hole of the blocking bulkhead. A cylindrical filter net installed to filter the incoming treatment water, an outlet pipe formed on the upper part of the main body so that the treatment subject water filtered by the filter net is discharged to the outside, and the upper part of the main body for backwashing the filter net. And a washing water supply pipe connected with the washing water to be supplied, and the pulverization unit has an inlet through which the water to be treated flows in, and a conical inner space gradually increasing as the inner diameter increases as the distance from the inlet is formed, and an inner peripheral surface of the housing A conical collider that is installed in the inner space of the housing so as to be spaced apart from and collides with the number of bubbles passing through the inlet of the housing, and a vortex forming blade formed in a spiral shape along the outer circumferential surface of the colliding body to form a vortex in the number of bubbles. And a driving part installed at the rear end of the housing to rotate the collider to rotate the collider.

As described above, according to the water treatment apparatus of the present invention, the entire water treatment by removing the foreign substances from the flotation tank after first removing the solid substances and bulky substances with relatively high specific gravity and bulky foreign substances contained in the water to be treated in the first centrifugal filter. It leads to an increase in the efficiency of the system.

In addition, bubbles with fine bubbles in the bubble water supply means are adopted by adopting a method of mixing the bubble water with fine bubbles generated in the water to be treated, not the method of injecting air into the water to be treated to generate bubbles in the water to be treated. Since the water is brought into contact with the water to be treated, the effect of collecting foreign substances due to fine bubbles can be greatly improved.

In addition, it is possible to effectively remove residual foreign substances and various harmful substances contained in raw water by a filter installed in multiple stages of the water to be treated through the floating tank using an appropriate filter medium according to the water quality of the water to be treated.

1 is a configuration diagram schematically showing the configuration of a water treatment apparatus according to an embodiment of the present invention,
2 is a partially cut-away perspective view showing the first filter applied to FIG. 1,
3 is a partially cut-away perspective view showing the mixing tank applied to FIG. 1,
FIG. 4 is a partially cut-away perspective view showing the pulverization part applied to FIG. 1.

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

1 is a block diagram schematically showing the configuration of a water treatment apparatus according to an embodiment of the present invention, FIG. 2 is a partially cut-away perspective view showing a first filter applied to FIG. 1, and FIG. 3 is a mixing tank applied to FIG. It is a partially cut-away perspective view, and FIG. 4 is a partially cut-away perspective view showing a pulverized part applied to FIG. 1.

1 to 4, the water treatment apparatus according to an embodiment of the present invention is largely a first filter 100, a floating tank 60, a bubble water supply means 10, and a second filter 70. ) And a third filter (80).

First, the first filter 100 is for removing solid foreign substances and bulky suspended substances, etc. of a large specific gravity contained in the water to be treated before removing foreign substances from the floating tank 60 by air bubbles. It is a filter for pretreatment by the method.

The first filter 100 forms a swirling flow by the kinetic energy of the water to be treated and the guide blade 130 that flows into the cylindrical body 110, so that foreign matters with a greater specific gravity than the water to be treated settle down to the bottom. The water to be treated is primarily filtered by removing the suspended matter that rises together with the water to be treated because the specific gravity is smaller than that of the water to be treated. Water, heavy water, sewage, wastewater, etc. are applied as water to be treated.

The first filter 100 applied to an embodiment of the present invention will be described in more detail. A cylindrical body 110 is provided which has a space of a certain size therein and is filled with water to be treated. In addition, the guide tube 115 formed at the intermediate height of the main body 110 is connected to the supply line 6 through which the water to be treated is supplied. The guide pipe 115 allows water to be treated into the main body 110 through a pump (not shown) installed on the supply line 6. In this case, the inlet to which the induction tube 115 is connected is formed to pass through the body 110 at an angle so that the water to be treated flowing into the body 110 is introduced along the inner wall surface of the body 110. The kinetic energy of the water to be treated flowing together with the inlet structure induces the water to be treated to form a swirling flow inside the body 110.

The water to be treated flowing into the body 110 forms a swirling flow by the guide blades 130. The guide blade 130 is formed in a spiral shape inside the main body 110. The guide blade 130 is installed in an intermediate area inside the main body 110. The guide blade 130 starts from the inlet and is formed to a predetermined position below while drawing a spiral. The guide blade 130 is formed to rotate in two to three or more rotations within the main body 110 so that the number of objects to be treated can sufficiently form a swirling flow.

The water to be treated flowing through the guide pipe 115 by the guide blade 130 is rotated in a spiral shape along the wall surface of the main body 110 and moves downward. At this time, foreign matters having a greater specific gravity than the water to be treated are precipitated into the sedimentation unit 155 provided in the lower portion of the main body 110.

A sedimentation guide plate 140 and a conical sediment floatation barrier 150 are installed on the upper part of the sedimentation part 155 at regular intervals. The sedimentation guide plate 140 is formed of a plurality of plates, one side is connected along the wall surface of the main body 110 and the other side is located in the inner center of the main body (110). In this case, the sedimentation guide plate 140 is preferably installed inclined along the rotational direction of the water. That is, the water to be treated turning along the guide blade 130 flows along the settling guide plate 140 while descending. In addition, while passing the upper end of the sedimentation guide plate 140, foreign matters having a specific gravity greater than the number of objects to be treated are settled downward through the plurality of settling guide plates 140. In this case, the inclined sediment guide plate 140 serves to reduce the flow rate of water and prevent the sediment accumulated on the sediment floatation barrier 150 from rising and floating.

The sediment floatation barrier 150 is located below the sediment guide plate 140 and has a conical shape. In the center of the sediment floatation barrier 150, a through hole 153 is formed in the center so that foreign matters settled in the sedimentation guide plate 140 can move to the sediment 155. The sediment floatation prevention partition wall 150 having a conical shape serves as a guide so that foreign matter precipitated from the sedimentation guide plate 140 easily flows into the through hole 153.

The sedimentation part 155 does not generate a vortex by the sediment floatation barrier 150 located at the top, and the flow of water is almost stopped. Therefore, the sediment settled to the bottom of the sedimentation part 155 is prevented from being floated to the top of the main body 110 by the sediment floating prevention partition wall 150.

In addition, a sediment discharge pipe 160 that penetrates and connects to the bottom of the sediment part 155 is installed under the main body 110. The sediment discharge pipe 160 is for discharging the sediment accumulated on the bottom of the sediment 155 to the outside. Preferably, the bottom of the settling part 155 is formed in a conical shape with a wide upper portion and a narrow lower portion, and a sediment discharge pipe 160 is connected to the lowermost portion of the bottom to allow the sediment to be easily discharged.

In addition, a blocking partition wall 125 is installed across the inside of the main body 110 positioned above the guide blade 130. The blocking partition wall 125 is for preventing water to be treated flowing through the induction pipe 115 from being directly introduced into the upper portion of the main body 110, and has a dome-shaped structure that is convex downward. In addition, a circulation hole 124 is formed in the center of the blocking partition wall 125 through which the treatment target water rising from the lower side flows into the upper side of the main body 110 after forming a swirling flow.

A cylindrical filter net 120 having a hollow inside is installed in the distribution hole 124 of the blocking partition wall. The filter net 120 serves to filter foreign substances or suspended substances in the water to be treated that are not precipitated due to the formation of fine through holes. Preferably, the through hole of the filter net 120 has a size of 20 to 100 mesh to maintain an appropriate amount of water treatment.

Therefore, the water to be treated flows into the filter network 120 through the distribution hole 124 of the barrier partition, and the water to be treated is filtered while passing from the inside to the outside of the filter network 120. The water to be treated filtered by the filter net 120 is transferred to the floating tank through the outlet pipe 180 formed on the upper part of the main body 110.

In addition, a washing water supply pipe 170 is installed on the upper portion of the main body 110 so that backwashing can be performed when the through hole of the filter net 120 is blocked by foreign substances. When the filter net 120 is clogged and the pressure of the water to be treated passing through the filter net 120 is lowered, the valve 175 installed in the washing water supply pipe 170 is opened. When the washing water supply pipe 170 is opened, the washing water flowing into the upper portion of the main body 110 passes from the outside of the filter mesh 120 to the inside, and the filter mesh 120 is washed. The backwashing of the filter net 120 is performed by an administrator regularly opening the valve 175 or installing a pressure sensor (not shown) on the upper side of the filter net 120 to reduce the pressure of the filtered water. (175) can be made open.

The water to be treated that has passed through the first filter 100 having the above configuration is introduced into the floating tank 60 through the sixth connector 7. In addition, the floating tank 60 is connected to the bubble water supply means 10 so that the bubble water supplied from the bubble water supply means 10 is introduced.

Therefore, as the bubble water is mixed with the water to be treated, the bubbles in the bubble water collect foreign substances contained in the water to be treated and float to the surface. Although not shown, a conventional scum skimmer is installed in order to discharge foreign substances floating on the surface of the floating tank 60 to the outside. The scum skimmer is a known one, and a detailed description thereof will be omitted. A conventional disk-shaped diffuser (not shown) is installed below the floating tank 60 so that the number of bubbles supplied from the bubble water supply means is widely distributed and introduced into the floating tank.

The bubble water supply means 10 includes a water storage tank 15, a pump 17 connected to the water storage tank 15 and the first connection pipe 1, and an intake pipe installed in the first connection pipe 1 ( 19), a pressure chamber 20 connected to the second connection pipe 2, a mixing tank 30 connected to the pressure chamber 20, and a pulverizing unit 50 connected to the mixing tank.

The water storage tank 15 has a cylindrical shape in which a storage space is provided so that a certain amount of water can be stored therein, and water is introduced through a raw water inlet pipe. And a first connection pipe 1 through which water is discharged is installed. Valves for opening and closing the passage are installed in the raw water inlet pipe and the first connection pipe 1, respectively. The first connection pipe 1 extending from the water storage tank 15 is connected to an inlet of a pump 17 that pressurizes and transports water. A typical high-pressure pump is used, and the transfer pressure of the pump 17 is about 8 to 10 bar. Although not shown, a pressure gauge may be installed in the second connector 2 connected to the outlet side of the pump 17.

An intake pipe 19 is installed in the first connection pipe 1. The end of the intake pipe 19 is exposed to the atmosphere. Therefore, air in the atmosphere is sucked into the first connection pipe 1 through the intake pipe 19. In addition, the intake pipe 19 may be connected to a gas storage tank or a gas generator in which a specific gas is stored. For example, the intake pipe 1 is connected to an ozone tank or an ozone generator so that ozone can be sucked into the first connector. A conventional check valve may be installed in the intake pipe 19. The air sucked through the intake pipe 19 is mixed with water in the first connection pipe 1 and sucked into the pump 17 and discharged to the pressure chamber 20 through the second connection pipe 2 and temporarily stored. . The pressure chamber 20 is a container having a size larger than an appropriate volume to accommodate the number of bubbles discharged by the pump, and is equipped with a relief valve (not shown) to maintain the internal pressure at a set pressure. A pressure gauge (not shown) is installed in the pressure chamber 20 to indicate pressure.

The bubble water flowing out of the pressure chamber 20 through the third connection pipe 3 flows into the mixing tank 30. The mixing tank 30 is maintained at atmospheric pressure. Accordingly, as the pressure of the bubble water introduced into the mixing tank 30 is lowered, fine bubbles are generated by the air mixed in the water. A venturi member 33 formed therein is installed at the upper part of the mixing tank 30 with a throttling passage 34 that gradually decreases in cross-sectional area and then increases again. The venturi member 33 is connected to the third connector 3. Bubble water is sprayed to the lower side of the mixing tank 30 through the venturi member 33. The venturi member 101 is provided with a nozzle 37 communicating with the throttling passage. And the nozzle 37 is connected to the gas return pipe (39). The gas return pipe 39 has one end connected to the nozzle 37 and the other end exposed to the interior of the mixing tank 30. Preferably, the end of the gas return pipe 39 is positioned at a position higher than the maximum water surface of the number of bubbles introduced into the mixing tank 30. When the number of air bubbles introduced into the venturi member 33 through the third connection pipe 3 passes through the narrowing neck of the throttling passage 37 of the venturi member 33, the flow rate increases and the pressure decreases. As the pressure decreases, the venturi member 33 is separated from the bubble water through the gas return pipe 39 connected to the nozzle 37 and strongly sucks and mixes the gas remaining on the water surface. After that, the venturi member 33 passes through the enlarged neck of the throttling passage 34. While doing so, the flow rate is lowered and the pressure is increased, so that the gas is dissolved under pressure in the bubble water.

A large amount of gas can be dissolved in the water by circulating and re-dissolving the bubbles separated from the bubble water through the venturi member 33. When ozone is used as a gas, ozone is not discharged to the outside, so environmental damage can be prevented, and ozone can be reused.

In the pulverizing unit 50 connected to the mixing tank 30 and the fourth connecting pipe 4, the air bubbles in the bubble water flowing out of the mixing tank 30 are pulverized more finely. The flange 59 formed at the front end of the pulverizing portion 50 is coupled with a flange (not shown) formed on the fourth connector 4. The pulverization unit 50 is provided with an inlet 54 through which water to be treated flows in, and a housing 51 having a conical inner space gradually increasing its inner diameter as it moves away from the inlet 54, and the inner peripheral surface of the housing 51 It is installed in the inner space of the housing 51 so as to be spaced apart, and is formed in a spiral shape along the outer circumferential surface of the collision body 52 and a conical collider 52 that collides with the number of bubbles passing through the inlet of the housing to form a vortex in the number of bubbles. It includes a vortex forming blade 55 to rotate, and a driving unit (not shown) installed at the rear end of the housing 51 to rotate the collision body 52 to rotate the collision body 52.

The inside of the housing 51 is formed with a conical inner space whose inner diameter gradually increases along the flow direction of the bubble water, and a collision body 52 is installed in the inner space. A rotation shaft (not shown) is formed on the rear surface of the collision body 52, and the rotation shaft penetrates through the rear surface of the housing 51 and extends to the outside of the housing 51. The rotating shaft is supported by a bearing (not shown) and is installed to be rotatable in the housing. The collision body 52 has the same conical shape as the inner space of the first housing 51, but has an outer diameter smaller than the inner diameter of the housing 51. The outer circumferential surface of the collision body 52 is installed to be spaced apart from the inner circumferential surface of the housing 51 by a predetermined distance. In addition, the front end of the collision body 52 is formed with a collision surface 53 formed perpendicular to the longitudinal direction of the vortex induction part 40. The outer circumferential surface of the collision body 52 is provided with vortex forming blades 55 formed in a spiral shape. The vortex forming blade 55 is formed in two or more.

The number of bubbles flowing at a constant speed through the inlet 54 of the housing collides with the impact surface 53 of the impact body 52. In this process, the bubble water is pulverized and split into finer bubbles. In addition, the number of bubbles collided is scattered around the collision body 52 and flows between the space between the collision body 52 and the housing 51. At this time, the number of bubbles forms a vortex flow that rotates around the collision body 52 by the vortex guide blades 55. In particular, the number of bubbles is accelerated as the turning radius gradually increases as the number of bubbles proceeds toward the rear surface of the housing 51 by the collision body 52 rotating in the driving unit. The drive unit has a conventional configuration for rotating the axis of rotation of the collision body 52. For example, a driven pulley installed at the end of a rotation shaft penetrating the rear of the housing 51, an electric motor installed at the rear of the housing 51, a driving pulley coupled to the driving shaft of the electric motor, and a driving pulley and a driven pulley are connected. It can be made of a belt.

By increasing the contact area between gases and liquids by the vortex flow in the housing 51 and extending the residence time, some undissolved gases can be dissolved in water, thereby increasing the overall dissolution efficiency. The bubble water flows out through the fifth connector 5 connected to the outlet formed at the rear of the housing 61 and is supplied to the diffuser of the floating tank 60. A flow control valve for adjusting the flow rate is installed in the fifth connection pipe 5. As the bubble water flowing into the floating tank 60 through the diffuser is mixed with the water to be treated, the fine bubbles in the bubble water collect foreign substances in the waste water and rise to the surface.

As described above, since the present invention introduces the bubble water generated by the bubble supply means 10 into the floating tank 60, the size of the bubble in contact with the water to be treated can be made smaller than in the prior art, thereby greatly increasing the treatment efficiency. .

The water to be treated discharged from the floating tank 60 flows into the second filter 70 through which foreign matter is filtered by the filter medium through the seventh connecting pipe 8. As the second filter 70, a known automatic pressure type filter can be used. The second filter 70 may use activated carbon and sand as a filter medium. As the water to be treated passes through the sand layer of the second filter 70, suspended substances and solids in the raw water are removed, and residual B.O.D., C.O.D., nitrogen, and heavy metals are removed and decolorized and deodorized by activated carbon. In addition, it is possible to effectively remove various harmful substances such as nitrogen, fluorine, iron, manganese and radium contained in raw water by using various filter media such as iron making, manganese sand, anthracite, and ion resin according to the quality of the water. The second filter 70 is configured to be discharged to the outside by periodically backwashing foreign matter deposited on the upper portion of the tank.

The water to be treated filtered by the second filter 70 is introduced into the third filter 80 through the eighth connecting pipe 9. The third filter 80 filters residuals and microorganisms by a conventional micro filter. The third filter 80 is formed of a micro filter having a pore size of 0.1 to 10 μm to remove microscopic impurities or bacteria. The water to be treated passing through the third filter 80 is finally filtered and introduced into the treated water storage tank 90 and stored.

The water treatment apparatus of the present invention described above floats and removes foreign substances in water to be treated, such as water, heavy water, sewage, and wastewater, using microbubbles, and at the same time removes various harmful substances contained in water to be treated using a multi-stage filter. do.

In the above, the present invention has been described with reference to an embodiment shown in the drawings, but this is only exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent embodiments are possible therefrom. .

Therefore, the true scope of protection of the present invention should be determined only by the appended claims.

10: bubble water supply means 15: water storage tank
17: pump 20: pressure chamber
30: mixing tank 50: crushing unit
60: floating tank 70: second filter
80: third filter 100: first filter

Claims (2)

A first filter for pre-filtering foreign substances by a difference in specific gravity by generating a helical swirling flow in the water to be treated supplied through the supply line;
A cylindrical floating tank through which the treated water pre-treated in the first filter flows into the interior;
A bubble water supply means connected to the floating tank to supply bubble water into the floating tank in order to float foreign substances in the water to be treated flowing into the floating tank to the surface of the floating tank;
A second filter for filtering foreign matters through a filter medium for the water to be treated flowing out of the flotation tank;
And a third filter for filtering residual foreign matter and microorganisms through the filter membrane for the water to be treated filtered by the second filter, and
The bubble water supply means includes a water storage tank in which water is stored, a pump connected to the water storage tank through a first connection pipe to suck water stored in the water storage tank and discharge it to a second connection pipe, and the second connection pipe. An intake pipe installed in the connection pipe to suck gas, a pressure chamber connected to the second connection pipe to store the number of air bubbles discharged from the pump at a set pressure, and a venturi connected to the pressure chamber through a third connection pipe. A mixing tank with a member installed at the top and injecting bubble water downward, a nozzle installed on the venturi member and communicating with the throttling passage, and one end connected to the nozzle and the other end exposed to the inside of the mixing tank to flow into the mixing tank And a gas return pipe through which the gas separated from the bubble water is sucked into the throttling flow path, and a pulverizing unit connected to the mixing tank and a fourth connection pipe and pulverizing the bubble water flowing out of the mixing tank and flowing into the floating tank. Water treatment device characterized in that.
The method of claim 1, wherein the first filter includes a cylindrical body having a space of a predetermined size therein, and the water to be treated, which is formed on a side surface of the body and transferred through the supply line, to flow along an inner wall surface of the body. An induction tube that guides, a guide blade formed in a spiral shape along the inner circumferential surface of the main body to form a swirling flow, and a guide blade formed in the lower part of the main body to form a swirling flow. A sedimentation unit in which foreign substances are settled, a sediment discharge pipe connected to the bottom of the body to discharge the sediment deposited in the sedimentation unit to the outside, and a sediment formed between the guide blade and the sedimentation unit and deposited in the sedimentation unit A conical sediment injury prevention bulkhead having a through hole formed in the center to prevent this from floating; a blocking partition wall installed above the guide blade to circulate the water to be treated to the upper portion of the body through a circulation hole formed in the center; A cylindrical filter net installed in the distribution hole of the barrier partition to filter the incoming treatment water, an outlet pipe formed on the upper part of the main body so that the treatment target water filtered from the filter net is discharged to the outside, and the filter net are reversed. It has a washing water supply pipe connected to the upper part of the main body to supply washing water for washing,
The pulverization unit is provided with an inlet through which the water to be treated flows in, and a housing having a conical inner space that gradually increases as an inner diameter increases as a distance from the inlet is formed, and is installed in the inner space of the housing so as to be spaced apart from the inner circumferential surface of the housing. A conical collision body colliding with the number of bubbles passing through the inlet of the collision body, a vortex forming blade formed in a spiral shape along the outer circumferential surface of the collision body to form a vortex in the number of bubbles, and installed at the rear end of the housing to rotate the collision body Water treatment apparatus using microbubbles, characterized in that it comprises a drive unit for rotating the collision body.

Images