KR102246268B1 - Waste water treatment apparatus using plural underwaterbubble generator making different size bubble and oxidizable gas - Google Patents

Abstract

The present invention relates to a wastewater treatment device using a multi-stage underwater microbubble generator with different bubble sizes and oxidizing gas. The present invention comprises: an oxidation and flotation tank having a first microbubble generator for decomposing organic matter contained in wastewater by supplying oxidizing gas formed in an oxygen generator, ozone formed in an ozone generator, and compressed air and generating nano-sized microbubbles and installed at a relatively low position and a second microbubble generator for allowing a floating material to rise at a high speed by supplying the oxidizing gas formed in the oxygen generator, the ozone formed in the ozone generator, and the compressed air, generating micro-sized microbubbles, and making the microbubbles adhere to the surface of the floating material and installed at a relatively high position to make the oxidizing gas and the ozone react with the wastewater accommodated therein and oxidize the wastewater; a sedimentation tank for gravity sedimentation of solid substances among pollutants to a lower layer and generation of water separated from the solid substances in an upper layer by allowing treated water from which the wastewater has been oxidized to remain after flowing in the oxidization and floatation tank; a treated water tank for detecting the treated water in the upper layer of the sedimentation tank with a first level sensor, operating a circulation pump when the water level is low, operating a discharge pump when the water level is high, transferring a portion of the treated water to a micro-filter, and removing the fine solid substances from the treated water; and a reuse tank for detecting water, which is treated water from which the fine solid substances have been removed through the micro-filter in the treated water tank, with a second level sensor, and receiving the water when the water level is low. An object of the present invention is to increase the treatment efficiency of the wastewater treatment system and increase the reuse rate of the treated water.

Description

TECHNICAL FIELD A waste water treatment apparatus using plural underwater bubble generator making different size bubble and oxidizable gas.

In the present invention, the present invention decomposes pollutants using an oxidizing gas generator, and increases the contact efficiency between the oxidizing gas and pollutants by using an underwater bubble generator for the excess gas generated after decomposing the pollutants of the oxidizing gas. The present invention relates to a device for generating microbubbles in multistage water having different bubble sizes and a wastewater treatment device using oxidizing gas.

In the conventional wastewater treatment system, gas suction was a structure in which the gas was sucked by equipment installed on the ground such as a vacuum pump and injected into the water tank.In the above injection structure, it was not easy to control the amount of gas injected. The pump does not operate properly when gas is introduced, and the pump does not operate smoothly, so that the pump is idle, and when a small amount of gas is introduced through the idle rotation of the pump, a high pressure is formed in the gas pipe to supply the gas. There was a problem in that the tube was compressed and obstructed the gas flow.

In addition, after decomposing contaminants using oxidizing gas, excess gas remaining in the reaction tank and original gas such as ozone and plasma are guided by only one vacuum pump and contacted with contaminants to become diluted oxidizing gas. The efficiency of oxidation treatment was lowered, and when a small amount of foreign substances were sucked into the vacuum pump, the foreign substances remained in the vacuum pump impeller, resulting in a failure of the pump.

The object of the present invention, conceived in consideration of the above points, is to minimize the use of water by treating wastewater generated during the washing and washing process and reusing it, thereby saving water resources and reducing costs. It is to provide a wastewater treatment device using a microbubble generator and an oxidizing gas.

Another object of the present invention is to re-use the excess gas remaining in the reaction tank after decomposition of pollutants using oxidizing gas through a micro-bubble generator in multi-stage water with different bubble sizes, thereby increasing the treatment efficiency of the wastewater treatment system and recycling the treated water. It is to increase the utilization rate.

Another object of the present invention is to minimize the equipment cost by reusing the oxidizing gas to solve the problems such as the enormous expenditure of the oxidizing gas generator and the lack of installation space due to the enlargement of the oxidizing gas generator generated in the conventional wastewater treatment system. It is to be able to use it freely.

In order to achieve the object of the present invention as described above, the multi-stage water microbubble generator and the wastewater treatment apparatus using oxidizing gas with different bubble sizes are supplied with oxidizing gas formed in the oxygen generator and ozone and compressed air formed in the ozone generator. It decomposes organic matter contained in wastewater by generating nano-sized microbubbles, and supplies the first microbubble generator installed at a relatively low location, oxidizing gas formed in the oxygen generator, ozone and compressed air formed in the ozone generator. It generates micro-sized micro-bubbles to be attached to the surface of the floating material so that the floating material rises at a high speed, and a second micro-bubble generator installed at a relatively high position is provided so that the oxidizing gas and the ozone are accommodated therein. An oxidation flotation tank for oxidizing the wastewater by reacting with the wastewater; A sedimentation tank for allowing the wastewater to remain after the oxidized treated water is introduced in the oxidation tank, so that solid substances among pollutants are gravitationally settled in the lower part, and water separated from the solid substance is generated in the upper part; The first level sensor detects the treated water in the upper part of the sedimentation tank, and when the water level is low, the circulation pump is operated, and when the water level is high, the discharge pump is operated to transfer part of the treated water to the micro-filter to remove fine solid substances in the treated water. A treatment tank and; A reuse tank for receiving the water in the case of a low water level by sensing water, which is the treated water from which fine solid substances have been removed through the micro-filter in the treatment tank; It characterized in that it is configured to include.

Here, the first microporous generator and the second microporous generator may be connected to a pressurizing pump that pressurizes wastewater toward the first microbubble generator and the second microbubble generator.

In addition, a pump screen is installed around the pressurizing pump so that the wastewater filtered by the pump screen is pressurized toward the first microbubble generator and the second microbubble generator.

In addition, the bottom surface of the pump screen may be formed to have a predetermined length and may be formed of a plurality of hollow pipes.

In addition, a backwash pump is installed inside the treatment tank, and the backwash pump supplies the treated water inside the treatment tank from an upper side to a lower side of the pump screen to perform backwashing of the porous pipe.

In addition, the first microbubble generator and the second microbubble generator may be disposed to face above a boundary region between the oxidation flotation tank and the settling tank so as to guide the floating foam layer toward the sedimentation tank.

In addition, a separate baffle may be installed at the front end of the sedimentation tank adjacent to the boundary region between the oxidation flotation tank and the sedimentation tank so that foreign matter contained in the incoming foam layer is settled on the bottom surface of the front end of the sedimentation tank.

In addition, a pipe strainer that is filtered while passing through the wastewater flowing from the sedimentation tank to the treatment water tank is installed inside the treatment tank, and at one side of the pipe strainer, foreign matter contained in the wastewater filtered by the pipe strainer A foreign material collection container to collect may be connected.

In addition, a screen portion including a plurality of porous pipes having a predetermined length and formed with a hollow may be provided inside the pipe strainer.

In addition, a discharge pump for discharging the treated water to the outside of the treatment water tank is installed inside the treatment water tank, and a separate connection pipe between the discharge pump and the pipe strainer and the discharge pump and the foreign material collection tank is provided. Each of the check valves can be installed.

In addition, one side of the oxidation flotation tank may be connected to a separate excess ozone depletion device that allows the remaining ozone to be extinguished and then discharged to the outside.

As described above, the multi-stage water microbubble generator and the wastewater treatment device using oxidizing gas with different bubble sizes according to the present invention doubled the underwater microbubble generator to avoid the inefficient use of oxidizing gas, which was pointed out as a problem in the conventional wastewater treatment device. As it is used to increase reusability and improve wastewater treatment efficiency, the problem can be solved by reducing the amount and cost of used water such as tap water or groundwater consumed for washing and washing. Through miniaturization, the expenditure of power usage and facility costs and installation space can be minimized, and thus a remarkable effect can be exhibited compared to the conventional wastewater treatment system.

1 is a schematic diagram schematically showing the structure of a multistage water microbubble generator and a wastewater treatment apparatus using an oxidizing gas having different bubble sizes according to the present invention,
FIG. 2 is a perspective view showing the structure of a bottom surface of a pump screen of a multi-stage water-in-water microbubble generator with different bubble sizes and a wastewater treatment device using an oxidizing gas,
FIG. 3 is a plan view showing a connection structure between a pipe strainer and a foreign material collection container of a multi-stage water-in-water micro-bubble generator of FIG. 1 and a wastewater treatment device using an oxidizing gas.

Hereinafter, an apparatus for generating microbubbles in multistage water having different bubble sizes and a wastewater treatment apparatus using an oxidizing gas according to an embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic diagram schematically showing the structure of a multistage water microbubble generator with different bubble sizes and a wastewater treatment device using an oxidizing gas according to the present invention, and FIG. 2 is a schematic diagram showing the microbubble generation in multistage water with different bubble sizes of FIG. It is a perspective view showing the structure of the bottom surface of the pump screen of the device and the wastewater treatment device using oxidizing gas, and FIG. 3 is a pipe strainer of the multi-stage water microbubble generator and the wastewater treatment device using oxidizing gas having different bubble sizes in FIG. It is a plan view showing the connection structure between the and foreign matter collection container.

As shown in these drawings, the multistage water microbubble generator and the wastewater treatment apparatus using oxidizing gas having different bubble sizes according to an embodiment of the present invention include oxidizing gas formed in the oxygen generator and ozone formed in the ozone generator. And compressed air is supplied to generate nano-sized microbubbles to decompose organic matter contained in wastewater, and in the first microbubble generator 110 installed at a relatively low position, and the oxidizing gas and ozone generator formed in the oxygen generator. Formed ozone and compressed air are supplied to generate micro-sized micro-bubbles to attach to the surface of the floating material to increase the floating material at a high speed, and a second micro-bubble generator 120 installed at a relatively high position is provided. An oxidation tank 100 for oxidizing the wastewater by reacting the oxidizing gas and the ozone with the wastewater contained therein; Sedimentation tank 200 for generating water separated from the solid material in the upper part by gravitationally sedimenting solid substances among pollutants in the lower part by allowing the wastewater to remain after the oxidized treated water flows in the oxidation flotation tank 100 )Wow; The first level sensor 210 senses the treated water in the upper part of the sedimentation tank 200, and operates the circulation pump 310 when the water level is low, and operates the discharge pump 320 when the water level is high, so that a part of the treated water is microcirculated. A treatment water tank 300 transferring to the filter 330 to remove fine solid substances in the treated water; The second level sensor 410 detects the water, which is the treated water from which the fine solids have been removed through the micro-filter 330 in the treatment tank 300, and when the water level is low, the reuse tank 400 receiving the water is supplied. ; Consists of including.

The oxidizing gas formed in the oxygen generator and the ozone and compressed air formed in the ozone generator are supplied to form microbubbles, and the oxidizing gas and the ozone contained in the microbubbles are oxidized by the oxidizing gas and the ozone. ) Acts to oxidize the wastewater by reacting with the wastewater contained in the interior.

To this end, the oxidation flotation tank 100 is provided with a first microbubble generator 110 and a second microbubble generator 120 for oxidizing and purifying wastewater.

The first microbubble generator 110 is installed inside the oxidation flotation tank 100 at a relatively lower position than the second microbubble generator 120 to generate nano-sized bubbles so that the bubbles generated in the water stay for a long time. So that organic matter contained in wastewater can be decomposed.

The second microbubble generator 120 is installed inside the oxidation flotation tank 100 at a relatively high position compared to the first microbubble generator 110 to generate micro-sized bubbles, so that the floating material is attached to the surface of the floating material. It rises rapidly so that floating matter can be effectively removed.

The most important and most used process of ozone treatment is the contact process of ozone gas and water, and the composition of ozone/air (or pure oxygen) generated by the ozone generator is dissolved by contacting water under a certain temperature/pressure.

This process can have a great influence on the ozone treatment efficiency problem and equipment/operation costs, and its performance must be well understood and decided.

Ozone is a poorly soluble gas with low solubility in water, and its solubility in water is determined according to Henry's law below.

- under -

P=HCs (here, H: Henry's constant P: ozone partial pressure Cs: saturated concentration in water)

Therefore, the deeper the water depth, the higher the pressure, so ozone is more easily dissolved in the water, and the air generated from the ozone generator is less, and less air bubbles are generated in the bubble generator. In addition, the dissolved ozone leaves the bubble generator and floats to the depth of the water. The pressure caused by is reduced and it turns into very small bubbles.

These first micro-cannon generator 110 and the second micro-cannon generator 120 have different depths to be installed as described above, so that the first micro-cannon generator 110 and the second micro-cannon generator 120 Although the size of the bubbles may be different, the size of the bubbles generated in the first micro-bubble generator 110 and the second micro-bubble generator 120 itself may be different.

The first microbubble generator 110 and the second microbubble generator 120 are located above the boundary area between the oxidation flotation tank 100 and the settling tank 200 so that the floating foam layer can be guided to the sedimentation tank 200 side. It is preferable to be arranged to face.

In addition, the first micropore generator 110 and the second microbubble generator 120 are connected to a pressure pump 130 that pressurizes the wastewater toward the first microbubble generator 110 and the second microbubble generator 120. It is possible to guide the floating foam layer to the sedimentation tank 200 side more quickly.

A pump screen 140 is installed around the pressurizing pump 130, and the wastewater that is primarily filtered by the pump screen 140 is the first microfluidic cell generator 110 and the second microfluidic cell generator 120 ) Side, it is pressurized together with ozone generated from the ozone generator and oxygen and compressed air generated from the oxygen generator to generate fine bubbles.

As shown in FIG. 2, the bottom surface of the pump screen 140 is formed to have a length relatively longer than that of a fiber type foreign material, and is formed of a plurality of hollow pipes 141, thereby forming a long fiber type included in the wastewater. It is desirable to effectively perform backwashing in the future while the foreign matter is filtered.

In other words, after filtering while the thin and long foreign matters of the fiber type are caught on the screen in the form of a general net, the foreign matters of the fiber seed oil are bound to the screen surface by twisting the surface of the screen, so even if backwashing is performed, the backwashing is not performed properly. However, in the case of the porous pipe 141, since foreign substances of fiber type are not bound to the porous pipe 141 having a predetermined length by mutual twisting, backwashing is performed accurately and quickly.

In addition, the porous pipe 141 is preferably disposed in a vertical direction so that backwashing can be effectively performed.

It is effective to increase the efficiency of filtration treatment by oxidizing and floating wastewater in the oxidation flotation tank 100 by increasing the time for the bubbles to stay by using the pump screen 140 having such a shape.

One side of the oxidation tank 100 is connected to a separate excess ozone destruction device 150 that allows the remaining ozone to be discharged to the outside after extinguishing, thereby preventing the remaining ozone from being discharged to the atmosphere, thereby preventing environmental pollution. It is effective to be able to.

The sedimentation tank 200 allows the wastewater to be retained after the oxidized treated water flows in from the oxidation-suspension tank 100, so that solid substances among pollutants are gravity settled in the lower layer, and water separated from the solid material is generated in the upper layer. Plays a role.

At the front end of the sedimentation tank 200 close to the boundary region between the oxidation flotation tank 100 and the sedimentation tank 200, there is a separate It is preferable that the baffle 220 is installed.

The baffle 220 is installed at the front end of the sedimentation tank 200 to prevent the floating matter and oil transferred to the sedimentation tank 200 from spreading to the surface of the sedimentation tank, and only the floating material is guided to the bottom of the settling tank and settled by gravity. To be able to do it.

To this end, the baffle 220 is disposed upright in a direction perpendicular to the bottom surface of the sedimentation tank 200 and extends from the ceiling of the sedimentation tank 200 to the inside of the treated water filled in the sedimentation tank 200 by 50 cm to 100 It is preferable that cm is inserted and the lower end of the baffle 220 is installed in a form spaced apart from the bottom surface of the settling tank 200 by a predetermined distance.

Bubbles floating in the water by the baffle 220 continuously rise to the upper layer of the water surface, and the bubbles formed in this way are accumulated on the surface of the water, and the bubbles accumulated in the air layer above the water surface do not come into contact with the ozone gas discharged to the surface of the water. Suspended substances that were destroyed by and attached to the destroyed bubbles aggregate together to form larger coarse particles.

In addition, the baffle 220 confines the suspended bubbles in a specific range to induce effective generation of coarse particles, traps ozone gas discharged from the water surface to decompose bubbles such as surfactants, and continuously removes trapped ozone gas. By re-suctioning and reusing, the ozone contact efficiency can be maximized.

In addition, although not shown in the drawing, the height of the baffle 220 is variable along the height direction of the sedimentation tank 200, and the location where the baffle 220 is installed is configured to be installed so as to be movable along the width direction of the sedimentation tank 200 Thus, by maximizing the efficiency of filtration of wastewater by the baffle 220, the operator can prevent sudden exposure to ozone gas and protect the environment, and at the same time, the management of the sedimentation tank 200 can be made easily. It is effective.

Meanwhile, a separate first level sensor 210 is installed at one side of the settling tank 200 to detect the level of the treated water charged in the settling tank 200.

As the first level sensor 210 is installed, the first level sensor 210 senses the treated water inside the sedimentation tank 200 and operates the circulation pump 310 when the water level is low, and the discharge pump 320 is operated when the water level is high. By operating, a part of the treated water is transferred to the micro-filter 330 so that fine solid substances in the treated water can be removed.

A backwash pump 340 is installed inside the treatment water tank 300, and the backwash pump 340 supplies the treated water inside the treatment water tank 300 from the upper side to the lower side of the pump screen 140 to prevent oxidation. Backwashing of the porous pipe 141 installed in the 100 is made.

In addition, a pipe strainer 350 that is filtered while passing through the wastewater flowing from the sedimentation tank 200 to the treatment water tank 300 is installed inside the treatment water tank 300, and a pipe strainer 350 is installed at one side of the pipe strainer 350. The foreign material collection container 360 for collecting the foreign material contained in the wastewater filtered by 350 is connected.

The pipe strainer 350 is used to filter the fine foreign substances contained in the treated water, and the filtered fine foreign substances are collected in the foreign substance collection container 360.

To this end, it is effective that the inside of the pipe strainer 350 is provided with a screen portion formed of a plurality of porous pipes 351 formed with a relatively longer length (in the range of 10 mm to 100 mm) than a foreign material of a fiber type.

As shown in FIG. 3, by installing a screen unit made of a plurality of porous pipes 351 inside the pipe strainer 350, long fibrous foreign substances contained in the treated water are filtered so that backwashing is effectively performed later.

In other words, after filtering while the thin and long foreign matters of the fiber type are caught on the screen in the form of a general net, the foreign matters of the fiber seed oil are bound to the screen surface by twisting the surface of the screen, so even if backwashing is performed, the backwashing is not performed properly. However, in the case of the porous pipe 351, since foreign substances of fiber type are not bound to the porous pipe 351 having a predetermined length by mutual twisting, backwashing is performed accurately and quickly.

In addition, the porous pipe 351 is preferably disposed in a vertical direction so that backwashing of the porous pipe 351 disposed inside the pipe strainer 350 can be effectively performed.

A discharge pump 320 for discharging the treated water to the outside of the treatment water tank 300 is installed inside the treatment water tank 300, and the discharge pump 320, the pipe strainer 350, and the Separate check valves 370 are installed in the connection pipe between the discharge pump 320 and the foreign material collection container 360, respectively.

This separate check valve 370 is installed in the connection pipe between the discharge pump 320 and the pipe strainer 350 and the discharge pump 320 and the foreign material collection container 360, thereby selectively selecting the check valve 370. By opening and closing, foreign substances contained in the treated water contained in the treatment water tank 300 are filtered and collected in the foreign substance collection container 360, or the treated water is discharged to the microfilter 330 and filtered so that it can be reused. .

The reuse tank 400 senses the water, which is the treated water from which the fine solids have been removed through the micro-filter 330 in the treatment tank 300, and receives the water when it is at a low water level and reuses it. It plays a role in making this possible.

A process of operating the multistage water microbubble generator and the wastewater treatment apparatus using oxidizing gas having different bubble sizes according to the present invention having the configuration as described above are as follows.

First, when the wastewater to be purified is introduced into the oxidation levitation tank 100 and charged to a certain level, the pressurization pump 130 is driven so that the ozone generated from the ozone generator and the oxygen and pressurized air generated from the oxygen generator are It is sprayed into the water through the first microbubble generator 110 and the second microbubble generator 120 to form fine bubbles.

Here, the first microbubble generator 110 is disposed at a relatively deeper position than the second microbubble generator 120 to generate nano-sized micro-bubbles, thereby allowing the nano-sized micro-bubbles to stay in water for a long time and thus to the wastewater. It reacts with the contained organic matter so that the organic matter can be decomposed.

In addition, the second microbubble generator 120 is disposed at a relatively lower position than the first microbubble generator 110 to generate micro-sized micro-bubbles, so that micro-sized micro-bubbles are attached to the surface of the floating material to prevent the floating material. It rises rapidly so that floating matter can be effectively removed.

And, by the porous pipe 141 provided on the bottom surface of the pressure pump 130, the foreign matter of the fine fiber type contained in the wastewater is caught in the porous pipe 141 and removed, and the type of fiber caught in the porous pipe 141 The foreign substances of the treatment water can be supplied in the reverse direction by the backwash pump 340 provided in the treatment tank 300 so that backwashing can be performed quickly.

As this process proceeds, since the first microbubble generator 110 and the second microbubble generator 120 are disposed in an inclined direction toward the boundary area between the oxidation floatation tank 100 and the sedimentation tank 200, the suspended material is It is removed by moving to the edge of 100) and leading to the settling tank 200.

At the same time as organic matter is decomposed, the wastewater from which the suspended matter is removed flows into the sedimentation tank 200 and is stacked on the bottom surface of the sedimentation tank 200 so that pollutants contained in the wastewater are once again removed.

The wastewater that has gone through this process is then moved to the treatment water tank 300, and fine contaminants contained in the treated water are filtered through the pipe strainer 350 and the micro-filter 330, and then moved to the recycling tank 400 to be external. To be discharged or used as water.

Here, looking at the process of filtering fine pollutants in the treatment tank 300 in more detail with reference to FIG. 3, when the discharge pump 320 is operated, the valve 370 installed in the connection pipe connected to the pipe strainer 350 is The valve 370, which is opened and installed in the connection pipe connected to the foreign substance collection container 360, is closed, and the treated water passes through the porous pipe 351 installed inside the pipe strainer 350, while fibrous foreign substances are filtered and a microfilter ( While calling 330), fine pollutants are filtered and then drained to a subsequent process.

In addition, when filtering the pipe strainer 350, the valve 370 installed in the connection pipe connected to the pipe strainer 350 is closed, and the valve 370 installed in the connection pipe connected to the foreign matter collecting container 360 is opened. When the treated water is injected into the pipe strainer 350 in a direction opposite to the direction in which the treated water flows during filtration, foreign substances of the fiber type attached to the pipe strainer 350 are collected in the foreign substance collecting container 360 to perform backwashing. .

The treated water stored in the treatment water tank 300 according to the above-described process is reused in the production process, and in the process requiring more high purity water, the treated water is filtered again and advanced treatment, and then transferred to the reuse tank to be stored and reused. do.

And, when the water level of the reuse tank 400 measured by the level sensor 410 installed in the reuse tank 400 is a low water level, the water supply valve 420 is opened and automatically replenished, and the level installed in the reuse tank 400 When the water level of the reuse tank 400 measured by the sensor 410 is high, the water supply valve 420 is closed so that water required for the production process can be smoothly supplied.

In the above, the apparatus for generating microbubbles in multistage water having different bubble sizes and the wastewater treatment apparatus using oxidizing gas of the present invention have been described through preferred embodiments, but this is only intended to help understanding the invention, and the technical scope of the present invention is limited thereto. Of course it's not what you want to do.

Without departing from the technical gist of the present invention, a person having ordinary knowledge in the technical field to which the present invention pertains can, of course, make various modifications or modifications, and such changes or modifications are within the technical scope of the present invention for interpretation of the claims. There is no need to say.

100: oxidative levitation tank 110: first microbubble generator
120: second fine gun generator 130: pressure pump
140: pump screen 141: porous pipe
150: excess ozone destruction device 200: sedimentation tank
210: first level sensor 220: baffle
300: treatment tank 310: circulation pump
320: discharge pump 330: micro filter
340: backwash pump 350: pipe strainer
360: foreign matter collection container 370: valve
400: reuse tank 410: level sensor
420: water supply valve

Claims (11)

The oxidizing gas formed in the oxygen generator and ozone and compressed air formed in the ozone generator are supplied to generate nano-sized micro-bubbles, thereby decomposing organic matter contained in the wastewater, and the first microbubble generator 110 installed at a relatively low position. ), and the oxidizing gas formed in the oxygen generator and ozone and compressed air formed in the ozone generator are supplied to generate micro-sized micro-bubbles to adhere to the surface of the floating material, thereby allowing the floating material to rise at a high speed. An oxidizing tank 100 provided with a second microbubble generator 120 installed at a location to oxidize the wastewater by reacting the oxidizing gas and the ozone with the wastewater contained therein;
Sedimentation tank 200 for generating water separated from the solid material in the upper layer by allowing the wastewater to remain after the oxidized treated water flows in the oxidation flotation tank 100 so that solid substances among pollutants are gravity settled in the lower layer. )Wow;
The first level sensor 210 senses the treated water in the upper part of the sedimentation tank 200 and operates the circulation pump 310 when the water level is low, and operates the discharge pump 320 when the water level is high to reduce a part of the treated water to a microcomputer. A treatment water tank 300 transferring to the filter 330 to remove fine solid substances in the treated water;
The second level sensor 410 detects the water, which is the treated water from which the fine solids have been removed through the micro-filter 330 in the treatment tank 300, and when the water level is low, the reuse tank 400 receiving the water is supplied. ; Including,
At the front end of the settling tank 200 adjacent to the boundary region between the oxidation flotation tank 100 and the settling tank 200, the sedimentation tank ( A separate baffle 220 is installed which is arranged to be upright in a direction perpendicular to the bottom surface of 200, extends from the ceiling of the settling tank 200, and is inserted into the treated water filled in the settling tank 200, and ,
The first micro-pore generator 110 and the second micro-pore generator 120 include a pressure pump 130 that pressurizes wastewater toward the first micro-cannon generator 110 and the second micro-cannon generator 120 It is connected, and a pump screen 140 is installed around the pressure pump 130, and the wastewater filtered by the pump screen 140 is the first microbubble generator 110 and the second microbubble generator 120 ) To the side,
The bottom surface of the pump screen 140 is formed to have a length relatively longer than that of a fiber type foreign material and is formed of a plurality of hollow pipes 141, and a backwash pump 340 inside the treatment tank 300 ) Is installed, and the backwash pump 340 supplies the treated water in the treatment water tank 300 from the upper side to the lower side of the pump screen 140 so that backwashing of the porous pipe 141 is performed. A wastewater treatment device using an oxidizing gas and a device for generating microbubbles in multistage water having different bubble sizes, characterized by delete delete delete delete The method of claim 1,
The first microbubble generator 110 and the second microbubble generator 120 are provided at the boundary between the oxidation flotation tank 100 and the settling tank 200 so that the floating foam layer can be guided toward the settling tank 200. A device for generating microbubbles in multistage water having different bubble sizes and a wastewater treatment device using an oxidizing gas, which are arranged to face the upper side of the region. delete The method of claim 1,
Inside the treatment tank 300, a pipe strainer 350 that is filtered while passing through the wastewater flowing from the sedimentation tank 200 to the treatment water tank 300 is installed, and at one side of the pipe strainer 350, the A wastewater treatment device using an oxidizing gas and a device for generating microbubbles in multi-stage water having different bubble sizes, characterized in that a foreign material collection container 360 for collecting foreign matter contained in the wastewater filtered by a pipe strainer 350 is connected. The method of claim 8,
The inside of the pipe strainer 350 is provided with a screen unit consisting of a plurality of porous pipes 351 having a predetermined length and formed with hollows, characterized in that the microbubble generator in multistage water with different bubble sizes and wastewater treatment using oxidizing gas Device. The method of claim 8,
A discharge pump 320 for discharging the treated water to the outside of the treatment water tank 300 is installed inside the treatment water tank 300, and the discharge pump 320, the pipe strainer 350, and the Separate check valves 370 are installed in the connection pipe between the discharge pump 320 and the foreign material collection container 360, respectively, a device for generating microbubbles in multistage water having different bubble sizes, and a wastewater treatment device using an oxidizing gas. . The method according to any one of claims 1, 6, 8 to 10,
One side of the oxidation flotation tank 100 is connected to a separate excess ozone depletion device 150 that allows the remaining ozone to be discharged to the outside after extinguishing it. Wastewater treatment system using oxidizing gas.

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