KR20210062516A - Wastewater treatment system using microbubble aeration process - Google Patents

Abstract

The present invention relates to a wastewater treatment system and a wastewater treatment method using a microbubble aeration process. The present invention includes: an anaerobic tank releasing phosphorus by removing organic matter from stored wastewater by anaerobic bacteria; an anoxic tank storing the treated water from the anaerobic tank and removing nitrogen; an aeration tank storing the nitrogen-removed treated water to overabsorb and nitrify the released phosphorus; a wastewater supply unit supplying wastewater to the anaerobic tank; a returning unit returning the treated water of the aeration tank to the anoxic tank; a microbubble supply unit generating microbubbles using supplied gas and the treated water of at least one of the aeration and anoxic tanks and supplying the microbubbles to the aeration tank; an aeration stirring unit stirring the treated water in the aeration tank; and an anoxic stirring unit stirring the treated water in the anoxic tank. According to the present invention, the mixing rate of the organic matter- and phosphorus-released wastewater can be improved and phosphorus and nitrogen removal can be removed more efficiently.

Description

Wastewater treatment system using microbubble aeration process}

The present invention relates to a wastewater treatment apparatus, and more particularly, to remove organic matter, phosphorus, and nitrogen from sewage, but use microbubbles to improve the removal rate, thereby improving the treatment efficiency of wastewater using a microbubble aeration process. It relates to a processing device.

In general, various modifications have been made based on a method of treating wastewater using an anaerobic tank, an aeration tank, and an anoxic tank.

In this sewage treatment, organic matter is removed by flowing into the anaerobic tank, followed by flowing into the aeration tank to complete the removal of organic matter, but nitrogen is also removed along with the anoxic tank.

In some cases, when there are many non-decomposable substances in wastewater, advanced oxidation methods such as Fenton oxidation are used.

As previously disclosed in Patent Application Publication No. 2001-0076873, the method of removing high-concentration organic matter and nitrogen is because the microorganisms in the anaerobic tank, aerobic tank, and denitrification tank (anoxic tank) are independently maintained. The aerobic tank has the advantage that nitrifying bacteria are maintained as the dominant species in the aerobic tank and the denitrifying bacteria are the dominant species in the post denitrification tank, which has the advantage of having a higher processing capacity.

However, as there is a complicated configuration for independently maintaining each microorganism in the anaerobic tank, aerobic tank, and denitrification tank, there is a problem that the cost increases and management is difficult.

Accordingly, there is an urgent need to develop a technology that is easy to manage by reducing costs as well as efficient water treatment with a minimum configuration.

Accordingly, the present invention was devised to solve the above problems, an anaerobic tank for releasing phosphorus by removing organic matter from sewage water stored by anaerobic bacteria, an anoxic tank in which the treated water transferred from the anaerobic tank is stored and nitrogen is removed. , An aeration tank for overabsorbing and nitrifying phosphorus discharged by storing nitrogen-removed treated water in the anoxic tank, a wastewater supply unit for supplying wastewater to the anaerobic tank, a conveying unit for returning the treated water from the aeration tank to the anoxic tank, A microbubble supply unit that generates microbubbles using the treated water and supplied gas from the aeration tank and the oxygen-free tank and supplies them to the aeration tank, an aeration stirrer for agitating the treated water stored in the aeration tank, and stored in the oxygen-free tank. It is an object to provide a wastewater treatment apparatus using a microbubble aeration process capable of improving the removal rate of phosphorus and nitrogen by improving the mixing ratio of wastewater from which organic matter and phosphorus is released, including an oxygen-free agitator for stirring the treated water.

The present invention for achieving the above object is an anaerobic tank for releasing phosphorus by removing organic matter from sewage water stored by anaerobic bacteria, an anoxic tank in which treated water transferred from the anaerobic tank is stored to remove nitrogen, and nitrogen is removed from the anoxic tank. An aeration tank for overabsorbing and nitrifying phosphorus discharged from the treated water, a wastewater supply unit for supplying wastewater to the anaerobic tank, a transport unit for returning the treated water from the aeration tank to the anoxic tank, at least one of the aeration tank and the anoxic tank A biological microbubble supply unit for generating microbubbles using treated water and supplied gas to supply to the aeration tank, an aeration stirrer for agitating the treated water stored in the aeration tank, and oxygen-free for stirring the treated water stored in the anoxic tank It includes a stirring part.

Preferably, the wastewater supply unit supplies wastewater to the lower end of the anaerobic tank.

And the biological microbubble supply unit, a biological microbubble pump for forming a mixed liquid by mixing the supplied treated water and gas, a biological treatment for supplying one or more of the treated water of the aeration tank and the anoxic tank to the biological microbubble pump A water supply pipe, a biological air supply part for supplying air to the biological microporous pump, a biological mixed liquid supply pipe for supplying the mixed liquid formed by the biological microporous pump to the aeration tank, and moving along the biological mixed liquid supply pipe A biological pressure sensor for measuring the pressure of the mixed liquid to be mixed, and a biological microporous cell control unit for controlling the biological microporous pump by receiving a signal from the biological pressure sensor, and biologically treated water by the biological microporous pump When the treated water is supplied through a supply pipe and the mixed liquid mixed with air supplied from the biological air supply unit is supplied to the aeration tank through the biological mixed liquid supply pipe, it is transformed to normal pressure and generates fine bubbles.

In addition, the biological microporous pump includes a biological pump body having a rotating space part formed therein, a biological pump inlet formed in the biological pump body for supplying treated water and gas to the rotating space part, and a gas-liquid mixture liquid formed in the rotating space part. Has a biological pump outlet for supplying the biological mixed liquid supply pipe, and a biological double blade, and a biological impeller rotatably provided in the rotating space of the biological pump body.

In addition, the area of the biological pump inlet port is formed larger than the area of the biological pump outlet port.

In addition, the area of the biological pump inlet port is formed to be 1 to 4 times the area of the biological pump outlet port.

In addition, the biological double wing, a plurality of biological first blades formed at predetermined intervals along the edge of one surface of the biological impeller, a plurality of biological second blades formed at predetermined intervals along the edge of the other surface of the biological impeller, and the plurality of biological impellers A biological first mixing path formed between the first blades to guide and mix the treated water and gas flowing through the biological pump inlet, and each formed between the plurality of second biological blades to form the biological pump inlet. And a second biological mixing furnace for guided and mixing the treated water and gas introduced through the reactor.

And the biological first wing is positioned between the two adjacent biological second wings.

In addition, the first biological blade and the second biological blade are formed to be orthogonal to the corresponding surface of the biological impeller.

In addition, at least one biological mixing communication hole for communicating the first biological mixing furnace and the second biological mixing furnace is further formed.

In addition, the biological first wing and the biological second wing, respectively, 40 to 100 are formed.

In addition, the biological micropore pump is rotated at 1,900 to 3,600 rpm, and the amount of gas supplied from the biological air supply unit is 0.5 to 4% of the treated water introduced through the biologically treated water supply pipe.

In addition, it is deformed at normal pressure in the aeration tank, and the microbubbles are 10 to 75 μm.

And it further includes a biological piping mixing unit for mixing by passing the mixed solution moving along the biological mixed liquid supply pipe in a spiral.

In addition, the biological piping mixing unit, a biological piping mixing body provided to communicate with the biological mixture liquid supply pipe, and a biological piping for tertiary mixing by guiding the mixed liquid provided inside the biological piping mixing body in a spiral manner. It includes mixing screws.

And the wastewater supply step of supplying the sewage water to the anaerobic tank by the wastewater supply unit of the wastewater treatment apparatus of paragraphs 1 to 8 is an anaerobic treatment step of removing phosphorus by removing organic matter from the wastewater stored in the anaerobic tank by anaerobic bacteria, The treated water from which nitrogen has been removed from the anaerobic tank is stored in the aeration tank to overabsorb and nitrify the released phosphorus, the aeration treatment step in which the treated water transferred from the aeration tank is stored in the anoxic tank to remove nitrogen, and the treated water from the anoxic tank as an aeration tank The transfer step of conveying, the biological microbubble supply step of generating microbubbles using the treated water and supplied gas from the aeration tank and the anoxic tank and supplying them to the aeration tank, and the aeration tank and the anoxic tank by the aeration and anoxic agitator. And a stirring step of stirring each of the stored treated water.

In the biological microporous supply step, a plurality of biological first wings and a first biological mixing path are formed on one side, and a biological impeller having a plurality of second biological wings and a second biological mixing path is formed on the other side of the biological pump body. Biologically treated water inflow step in which treated water flows into the biologically treated water supply pipe by the biological microfluidic fabric pump of the biological microfluidic fabric supply unit rotatably provided in the rotating space part, the biological impeller rotates so that the treated water is introduced In this case, the biological air inflow step in which air is introduced into the rotating space through the biological air supply part, when the biological impeller is rotated so that the treated water is introduced, the biological gas inflow step in which gas is introduced into the rotating space part through the biological gas supply part, is rotated. A biological mixed liquid generation step of generating a mixed liquid by striking and mixing the treated water and air supplied by a plurality of first biological blades, second biological blades, biological first mixing furnace, second biological mixing furnace, and biological impeller And a biological microbubble generation step of generating micro-bubbles by lowering the pressure to normal pressure as the mixed liquid produced by is supplied to the aeration tank through the biological mixed-liquid supply pipe.

In addition, it further includes a settling unit for removing sediment from the treated water that has passed through the wastewater treatment apparatus using the microbubble aeration process.

And it further includes a solid-liquid separation device for removing the fine particles suspended in the treated water from which the precipitate has been removed by the settling unit.

In addition, the solid-liquid separation device is a storage tank having a storage space for containing raw water by being opened upward, a raw water supply for supplying raw water to the storage space of the storage tank, and microscopic floating of raw water of the storage tank. The concentrated liquid discharge part for discharging the particles, the treated water discharge part for discharging the treated water separated from the fine particles in the raw water of the storage tank, the treated water of the storage tank and the ozone gas are used to generate ozone microbubbles to store water. The ozone microbubble supply unit supplied to the unit, a plasma generating unit for discharging plasma in the storage space of the storage tank, and the sludge floating by the moving scraper are moved to the concentrated solution discharge unit, which is located above the storage tank. It includes a scraping part to separate and discharge.

And the storage space of the storage tank, the mixing space for mixing the raw water supplied from the raw water supply unit and the ozone microbubble supplied from the ozone microbubble supply unit, the raw water and the ozone microbubble mixed in the mixing space are moved. However, a floating space part in which the ozone microbubble and attached microparticles are floated and separated, a separation space part in which the treated water from which the fine particles are separated from the floating space part is moved to be stored, and an agent for dividing the mixing space part and the floating space part It includes one partition wall, and a second partition wall for partitioning the floating space part and the separation space part.

In addition, the first partition wall and the second partition wall are formed to communicate with the upper end of the corresponding space.

In addition, the upper end portion of the first partition wall is formed to be inclined toward the floating space portion.

In addition, the upper end of the first partition wall is formed at 30 to 60 degrees, and is preferably formed at 45 degrees.

In addition, the upper end of the second partition is located below the upper end of the first partition.

In addition, at least one treatment water communication is formed at the lower end of the second partition wall to communicate the lower end of the floating space and the lower end of the separation space.

In addition, the area of the treated water communication is formed to be smaller than the area communicated with the upper end of the second partition and is 5 to 30% of the amount of the treated water moved through the upper communication part of the second partition.

In addition, the raw water supply unit, a raw water supply pipe provided to supply raw water to the lower end of the mixing space, a raw water pump for supplying raw water through the raw water supply pipe, and measuring the amount of raw water introduced through the raw water supply pipe. And a flow sensor for, and a raw water supply control unit for controlling the raw water pump by receiving a signal from the flow sensor.

And the ozone microbubble supply unit, an ozone microbubble pump for forming an ozone mixture liquid by mixing the supplied treated water and ozone gas, and a treated water supply pipe for supplying the treated water of the separation space to the ozone microbubble pump. , An air supply unit for supplying air to the ozone micropore pump, an ozone gas supply unit for supplying ozone gas to the ozone micropore pump, and ozone for supplying the ozone mixture liquid formed by the ozone micropore pump to the mixing space unit A mixed liquid supply pipe, a pressure sensor for measuring the pressure of the ozone mixed liquid moving along the ozone mixed liquid supply pipe, and an ozone micropore control unit for controlling the ozone micropore pump by receiving a signal from the pressure sensor, And the ozone mixture liquid mixed with the air supplied from the air supply unit and the ozone gas supplied from the ozone gas supply unit by supplying treated water through the treated water supply pipe by the ozone micropore pump through the ozone mixture liquid supply pipe When supplied to the ozone mixing space, it is transformed to normal pressure and generates ozone microbubbles.

In addition, the ozone micropore pump includes a pump body having a rotating space portion formed therein, a pump inlet formed in the pump body for supplying treated water, air, and ozone gas to the rotating space portion, and ozone mixing formed in the rotating space portion. It includes a pump outlet through which liquid is supplied to the mixed liquid supply pipe, and an impeller having a double wing and rotatably provided in a rotating space portion of the pump body.

In addition, the area of the pump inlet port is formed larger than the area of the pump outlet port.

In addition, the area of the pump inlet port is formed to be 1 to 4 times the area of the pump outlet port.

And the double blades, a plurality of first blades formed at regular intervals along the edge of one surface of the impeller, a plurality of second blades formed at regular intervals along the edge of the other surface of the impeller, respectively formed between the plurality of first blades And a first mixing path for guided and mixing the treated water and gas flowing through the pump inlet, and the treated water and gas respectively formed between the plurality of second blades and introduced through the pump inlet are guided and mixed. It includes a second mixing furnace to become.

In addition, the first blade is located between the two adjacent second blades.

In addition, the first and second blades are formed to be orthogonal to the corresponding surface of the impeller.

In addition, 40 to 100 of the first and second blades are formed, respectively.

And the ozone micropore pump is rotated at 1,900 ~ 3,600rpm, the treated water introduced through the treated water supply pipe is 10 ~ 60wt% of the treated water of the separation space, the amount of gas supplied from the gas supply is the It is 0.5 to 4% of the treated water flowing through the treated water supply pipe.

In addition, it is deformed at normal pressure in the mixing space and the ozone microbubble is 10 to 75 μm.

And a pipe mixing unit for mixing by passing the ozone mixture liquid moving along the mixed liquid supply pipe in a spiral manner.

In addition, the piping mixing unit includes a piping mixing body provided to communicate with the mixed liquid supply pipe, and a piping mixing screw for tertiary mixing by guiding the ozone mixture liquid provided inside the piping mixing body in a spiral manner, Includes.

And the plasma generation unit is provided in the storage space of the storage tank, a plasma discharge unit for discharging plasma, a plasma power supply unit for supplying power to the plasma discharge unit, and the plasma power supply unit and the plasma discharge unit to control the amount of plasma generated. It includes a plasma control unit for controlling the.

In addition, the plasma discharge unit includes a dielectric tube provided in the mixing space, a discharge electrode disposed inside the dielectric tube, and a counter electrode provided outside the dielectric tube so as to correspond to the discharge electrode.

And a gas injection part for maintaining the internal gas pressure of the dielectric tube.

In addition, the gas injection unit receives a signal from a gas pump for supplying gas into the dielectric tube, a dielectric tube pressure sensor for measuring the internal pressure of the dielectric tube, and the gas pump by receiving a signal from the dielectric tube pressure sensor. And a gas control unit for controlling the internal pressure of the dielectric tube.

In addition, the plasma power supply unit supplies high voltage power.

Further, the dielectric tube is a circular tube, and is formed of any one selected from a quartz tube, a glass tube, and a ceramic tube.

And the discharge electrode is formed in a coil shape.

In addition, the scraping unit may include a first rotating part rotatably provided above the rear end of the separating space part of the storage tank, a second rotating part rotatably provided above the front end of the floating space part of the storage tank, and the second rotating part. A connecting member for rotating a caterpillar rotation of the first and second rotating parts in the same direction, a scraper provided on the connecting member to scrape the fine particles floating in the storage space of the storage tank as the connecting member rotates in the same direction, And a drive unit for rotating the connecting member and the scraper in an infinite orbit by rotating the first rotating part or the second rotating part.

And after discharging the floating fine particles to the concentrate discharge unit, a scraping cleaning unit provided at the upper end of the concentrate discharge unit to scrape the surface of the scraper rotated upward along the first rotating unit, further Includes.

In addition, the scraping and cleaning unit has elasticity and is formed to be inclined downward from the upper end of the concentrate discharge unit toward the first rotating unit.

And it further comprises a treatment water tank for storing the treated water discharged through the treated water discharge unit, and the treated water stored in the treatment water tank is transferred to the wastewater treatment plant.

In addition, a raw water tank in which the concentrated liquid discharged through the concentrated liquid discharge part is stored, an acid fermentation tank in which the concentrated liquid stored in the raw water tank is stored and fermented, a pulverizing part for pulverizing the concentrated liquid transferred from the raw water tank to the acid fermentation tank, and anaerobic organisms are used. A digestion tank for storing and decomposing the fermented liquid fermented in the acid fermentation tank, a storage tank for temporarily storing some of the concentrate discharged through the concentrate discharge unit, a second supply pump for supplying the concentrate stored in the storage tank to the digester, the It includes a gas discharge unit for discharging the gas generated in the digester.

And a digestive liquid storage tank for storing the digestive liquid decomposed in the digestion tank, a digestive liquid discharge part for transferring the digestive liquid stored in the digestive liquid storage tank to a wastewater treatment plant, and a circulation pump for circulating the digestive liquid stored in the digestive liquid storage tank to the storage tank.

As described above, according to the wastewater treatment apparatus using the microbubble aeration process according to the present invention, it is a very useful and effective invention to improve the removal rate of phosphorus and nitrogen by improving the mixing ratio of wastewater from which organic matter and phosphorus is released.

1 is a view showing a wastewater treatment apparatus using a microbubble aeration process according to the present invention,
2 is a view showing a microbubble supply unit according to the present invention,
3 is a view showing a microbubble pump according to the present invention,
4 is a view showing a wastewater treatment method using a microbubble aeration process according to the present invention,
5 is a view showing a biological microporous supply step according to the present invention,
6 is a view showing a biological mixture liquid generation step according to the present invention,
7 is a diagram showing a biological microporous supply step according to the present invention,
8 is a view showing a state in which a sedimentation unit and a solid-liquid separation device are further provided in the wastewater treatment apparatus according to the present invention,
9 is a view showing a solid-liquid separation device according to the present invention,
10 is a view showing a side view of the solid-liquid separation device according to the present invention,
11 is a view showing an ozone microbubble supply unit according to the present invention,
12 is a view showing an ozone micropore pump according to the present invention,
13 is a view showing a plasma generator according to the present invention,
14 is a view showing a state in which a treatment water tank part, a fermentation part, and a circulation part are further provided in the water treatment apparatus according to the present invention,
15 is a view showing a water treatment method using plasma and ozone microbubble according to the present invention,
16 is a view showing a raw water supply step according to the present invention,
17 is a view showing the ozone microbubble supply step according to the present invention,
18 is a view showing a mixed solution generation step according to the present invention,
19 is a view showing another embodiment of the ozone microbubble supply step according to the present invention,
20 is a view showing a plasma ozone microbubble supply step according to the present invention,
21 is a view showing a concentrated liquid separation step according to the present invention,
22 is a view showing another embodiment of a water treatment method using plasma and ozone microbubble according to the present invention,
23 is a diagram showing a post-processing step according to the present invention,
24 is a view showing a fermentation step according to the present invention,
25 is a diagram showing a cycle step according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE INVENTION The detailed description to be disclosed below together with the accompanying drawings is intended to describe exemplary embodiments of the present invention, and is not intended to represent the only embodiments in which the present invention may be practiced. The following detailed description includes specific details to provide a thorough understanding of the present invention. However, those of ordinary skill in the art to which the present invention pertains knows that the present invention may be practiced without these specific details.

In some cases, in order to avoid obscuring the concept of the present invention, well-known structures and devices may be omitted, or may be illustrated in a block diagram form centering on core functions of each structure and device.

Throughout the specification, when a part is said to "comprising or including" a certain component, it means that other components may be further included rather than excluding other components unless specifically stated to the contrary. do. In addition, the term "... unit" described in the specification means a unit that processes at least one function or operation. In addition, "a or an", "one", "the" and similar related words are different from the present specification in the context of describing the present invention (especially in the context of the following claims). Unless indicated or clearly contradicted by context, it may be used in the sense of including both the singular and the plural.

In describing the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted. In addition, terms to be described later are terms defined in consideration of functions in an embodiment of the present invention, which may vary according to the intention or custom of users or operators. Therefore, the definition should be made based on the contents throughout the present specification.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a view showing a wastewater treatment apparatus using a microbubble aeration process according to the present invention, Figure 2 is a view showing a microbubble supply unit according to the present invention, Figure 3 shows a microbubble pump according to the present invention Figure 4 is a view showing a wastewater treatment method using a microbubble aeration process according to the present invention, Figure 5 is a view showing a biological microbubble supply step according to the present invention, Figure 6 is a diagram according to the present invention Figure 7 is a diagram showing a biological mixed liquid generation step according to the present invention, Figure 7 is a view showing a biological microbubble supply step according to the present invention, Figure 8 is a wastewater treatment apparatus according to the present invention, a sedimentation unit and a solid-liquid separation device further provided 9 is a view showing a solid-liquid separation device according to the present invention, Figure 10 is a view showing a side view of the solid-liquid separation device according to the present invention, Figure 11 is ozone according to the present invention Fig. 12 is a view showing a microbubble supply unit, Fig. 12 is a view showing an ozone microbubble pump according to the present invention, Fig. 13 is a view showing a plasma generator according to the present invention, and Fig. 14 is a water treatment apparatus according to the present invention It is a view showing a state in which the treatment water tank part, the fermentation part, and the circulation part are further provided, and FIG. 15 is a view showing a water treatment method using plasma and ozone microporous according to the present invention, and FIG. 16 is a raw water according to the present invention. Fig. 17 is a view showing the supplying step of the ozone microbubble according to the present invention, Fig. 18 is a view showing the step of producing a mixed solution according to the present invention, and Fig. 19 is Fig. 20 is a view showing another embodiment of the microbubble supply step, Fig. 20 is a view showing a plasma ozone microbubble supply step according to the present invention, and Fig. 21 is a view showing a concentrated liquid separation step according to the present invention, and Fig. 22 is a view showing another embodiment of a water treatment method using plasma and ozone microporous according to the present invention, Figure 23 is a view showing a post-treatment step according to the present invention, Figure 24 is a fermentation step according to the present invention Fig. 25 is a view showing a cycle step according to the present invention.

As shown in the drawing, the wastewater treatment apparatus 10 using the microbubble aeration process includes an anaerobic tank 1100 and an aeration tank 1200, an oxygen-free tank 1300, a wastewater supply unit 1400, a conveyance unit 1500, and a biological microbubble. It includes a supply unit 1600, an aeration stirrer 1700, and an oxygen-free stirrer 1800.

The anaerobic tank 1100 is provided to release phosphorus by removing organic matter from sewage water stored by anaerobic bacteria.

In addition, the aeration tank 1200 is provided to overabsorb and nitrify the phosphorus discharged by storing the treated water from which nitrogen has been removed in the anaerobic tank 1100.

In the anoxic tank 1300, the treated water transferred from the aeration tank 1200 is stored and nitrogen is removed.

In addition, the wastewater supply unit 1400 is provided to supply the wastewater to the anaerobic tank 1100.

The conveying unit 1500 is provided to convey the treated water of the aeration tank 1200 to the anoxic tank 1300.

In addition, the biological microbubble supply unit 1600 generates microbubbles using one or more of the treated water and supplied gas among the aeration tank 1200 and the oxygen-free tank 1300 and supplies them to the aeration tank 1200.

The aeration stirrer 1700 is provided to agitate the treated water stored in the aeration tank 1200.

In addition, the oxygen-free stirring unit 1800 is provided to stir the treated water stored in the oxygen-free tank (1300).

Here, the wastewater supply unit 400 supplies wastewater from the lower end of the anaerobic tank 1100, and the microbubble supply unit 1600 is supplied from the lower end of any one or more of the aeration tank 1200 and the anoxic tank 1300.

For this, as shown in FIG. 2, the biological micropore supply unit 600 includes a biological microporous pump 1610, a biologically treated water supply pipe 1620, a biological air supply unit 1630, and a biological mixed liquid supply pipe 1640. ), a biological pressure sensor 1650 and a biological microcellular control unit 1660.

The biological micropore pump 1610 is provided to form a gas-liquid mixture liquid by mixing the supplied treated water and gas.

In addition, the biologically treated water supply pipe 1620 is provided to supply one or more treated water of the aeration tank 1200 and the anoxic tank 1300 to the biological microporous pump 1610.

The biological air supply unit 1630 is provided to supply air to the biological micropore pump 1610.

In addition, the biological mixed liquid supply pipe 1640 is provided to supply the mixed liquid formed in the biological micropore pump 1610 to the aeration tank 1200.

The biological pressure sensor 1650 is provided to measure the pressure of the mixed liquid moving along the biological mixed liquid supply pipe 1640.

Further, the biological micropore control unit 1660 controls the biological microporous pump 1610 by receiving a signal from the biological pressure sensor 1650.

Looking at the operating state of the biological microbubble supply unit 1600, the treated water is supplied through the biological treatment water supply pipe 1620 by the biological microbubble pump 1610, and the mixture formed with the air supplied from the biological air supply unit 1630 When the liquid is supplied to the aeration tank 1200 through the biological mixed liquid supply pipe 1640, it is transformed to normal pressure and generates microbubbles.

Here, the biological microporous control unit 1660 controls the supply pressure by receiving a signal from the biological pressure sensor 1650, but it is natural that it is controlled in connection with the supply amount of sewage water supplied from the sewage water supply unit 1400 or the amount of treated water. Do.

Accordingly, the biological microbubble control unit 1660 is connected with the wastewater supply unit 1400 to control the generation amount of microbubbles when the supply of the wastewater is small or is stopped.

And the biological microbubble supply unit 1600 further includes a biological pipe mixing unit 1670.

The biological piping mixing unit 1670 is provided for mixing by passing the mixed solution moving along the biological mixed liquid supply pipe 1640 in a spiral manner.

The biological piping mixing unit 1670 includes a biological piping mixing body 1672 and a biological piping mixing screw 1674.

The biological piping mixture body 1672 is provided to communicate with the biological mixture liquid supply pipe 1640.

In addition, the biological piping mixing screw 1674 is provided inside the biological piping mixing body 1672 to guide the conveyed mixed liquid in a spiral manner to perform tertiary mixing.

Accordingly, it is possible to improve the efficiency of generating fine bubbles by improving the mixing ratio of the mixed solution.

Here, the biological micropore pump 1610 includes a biological pump body 1612, a biological pump inlet 1614, a biological pump outlet 1616, and a biological impeller 1618, as shown in FIG. 3.

The biological pump body 1612 has a rotating space part 1613 formed therein.

In addition, the biological pump inlet 1614 is formed in the biological pump body 1610 for supplying treated water and gas to the rotating space unit 1613.

The biological pump outlet 1616 is provided to supply the gas-liquid mixture liquid formed in the rotating space unit 1613 to the biological mixed liquid supply pipe 1640.

In addition, the biological impeller 1618 has a biological double wing 1619, and is rotatably provided in the rotating space portion 1613 of the biological pump body 1612.

Here, the area of the biological pump inlet 1614 is formed larger than the area of the biological pump outlet 1616.

In other words, the area of the biological pump inlet 1614 is formed to be 1 to 4 times the area of the biological pump outlet 1616.

This means that the pressure discharged to the biological pump outlet 1616 is lower than the pressure flowing into the biological pump inlet 1614, and the speed is reduced by the lowered pressure to form bubbles first.

Thereafter, when supplied to the aeration tank 1200, it is deformed to normal pressure and microbubbles are generated.

In addition, the biological double wing 1619 includes a biological first wing 16192 and a second biological wing 16194, a first biological mixing furnace 16196, and a second biological mixing furnace 16198.

A plurality of biological first wings 16192 are formed at regular intervals along the edge of one surface of the biological impeller 1618.

In addition, a plurality of second biological blades 16194 are formed at regular intervals along the edge of the other surface of the biological impeller 1618.

The first biological mixing furnace 16192 is formed between the plurality of first biological blades 16192 and is provided to guide and mix the treated water and gas flowing through the biological pump inlet 1614.

In addition, the second biological mixing furnace 16198 is formed between the plurality of second biological blades 16194 and is provided to guide and mix the treated water and gas flowing through the biological pump inlet 1614.

Here, at least one biological mixing communication hole (16199) is further formed to communicate the first biological mixing furnace (16196) and the second biological mixing furnace (16198).

This biological mixing communication hole (16199) moves the treated water and gas that are moved along the first biological mixing furnace (16196) to the second biological mixing furnace (16198), and is moved along the second biological mixing furnace (16198). The treated water and gas are moved to the biological first mixing furnace (16196) to improve the mixing rate.

Such a biological mixing communication hole (16199) is formed by a slope from the biological first mixing furnace (16196) to the biological second mixing furnace (16198), and is formed to be inclined downward from the edge of the biological impeller (1618) to the center.

In addition, the biological mixing communication hole (16199) is formed to gradually decrease in diameter from the end where the mixed solution is introduced to the end that is discharged.

Accordingly, by increasing the speed of the mixed liquid to be moved, it is moved at a different speed from that of the mixed liquid hit by the biological double blades 1619 to improve the mixing rate.

In addition, the biological first wing 16192 is positioned between two adjacent biological second wings 16194, for example.

In addition, the biological first wing 16192 and the biological second wing 16194 are formed to be orthogonal to the corresponding surface of the biological impeller (1618).

The biological first wing (16192) and the biological second wing (16194) are formed in each of 40 to 100.

In addition, the biological micropore pump 1610 is rotated at 1,900 to 3,600 rpm, and the amount of gas supplied from the biological air supply unit 1630 is 0.5 to 4% of the treated water introduced through the biologically treated water supply pipe 1620.

In addition, it is deformed at normal pressure in the aeration tank 1200, and the micro-bubbles are 10 to 75 μm.

Here, the microbubbles supplied from the biological microbubble supply unit 1600 function to float the microparticles and generate OH radicals.

About 95% of these microbubbles float fine particles, and about 5% of them burst in water to create OH radicals (O ₂ , H ₂ , O _3, etc.).

This OH radical can oxidize and decompose dissolved organic matter through advanced oxidation.

As shown in FIG. 4, the wastewater treatment method by the wastewater treatment device 10 using the microbubble aeration process includes a wastewater supply step (S1000) and an anaerobic treatment step (S1100), an aeration treatment step (S1200), It includes a denitration step (S1300), a conveyance step (S1400), a biological microbubble supply step (S1500), and a stirring step (S1600).

In the wastewater supply step (S1000), the wastewater is supplied to the anaerobic tank 1100 by the wastewater supply unit 1400.

And the anaerobic treatment step (S1100) removes organic matter from the wastewater stored in the anaerobic tank 1100 by anaerobic bacteria to release phosphorus.

In the aeration treatment step (S1200), the treated water from which nitrogen has been removed in the anaerobic tank 1100 is stored in the aeration tank 1200 to overabsorb and nitrify the released phosphorus.

In addition, in the denitration step (S1300), the treated water transferred from the aeration tank 1200 is stored in the anoxic tank 1300 to remove nitrogen.

In the conveying step (S1400), the treated water of the anoxic tank 1300 is returned to the aeration tank 1200.

In addition, in the biological microbubble supply step (S1500), microbubbles are generated and supplied to the aeration tank 1200 by using the treated water and supplied gas of at least one of the aeration tank 1200 and the oxygen-free tank 1300.

In the agitation step (S1600), the treated water stored in the aeration tank 1200 and the anoxic tank 1300 is stirred by the aeration agitation unit 1700 and the oxygen-free agitation unit 1800, respectively.

In addition, the biological microbubble supply step (S1500), as shown in Figure 5, biologically treated water inflow step (S1510) and biological air inflow step (S1520), biological gas inflow step (S1530), biological mixture liquid generation step ( S1540) and biological microbubble generation step (S1550).

In the step of introducing biologically treated water (S1510), a plurality of first biological blades 15192 and a biological first mixing furnace 15196 are formed on one surface, and a plurality of second biological blades 15194 and a second biological mixing furnace are formed on the other surface. Biologically treated water by the biological microporous pump 1510 of the biological microporous supply unit 1500 provided so that the biological impeller 1518 with the 15198 formed is rotatable in the rotating space 1513 of the biological pump body 1512 The treated water flows into the biological micropore pump 1510 along the supply pipe 1520.

In addition, in the biological air inflow step (S1520), when the biological impeller 1518 is rotated so that the treated water is introduced, air is introduced into the rotating space part 1513 through the biological air supply part 1530.

In the biological gas inflow step (S1530), when the biological impeller 1518 is rotated so that the treated water is introduced, the gas is introduced into the rotating space part 1513 through the biological gas supply part 1580.

The biological mixed liquid generation step (S1540) is supplied by a plurality of rotating biological first blades 15192, biological second blades 15194, first biological mixing furnace 15194, and second biological mixing furnace 15198. The treated water and air are blown and mixed to create a mixed liquid.

In addition, in the biological microbubble generation step (S1550), as the mixed liquid generated by the biological impeller 1518 is supplied to the aeration tank 1200 through the biological mixed liquid supply pipe 1540, the pressure is lowered to normal pressure to generate microbubbles. Let it.

In addition, the biological mixed liquid generation step (S1540) includes a biological strike step (S1541), a first biological mixing step (S1542), and a second biological mixing step (S1543), as shown in FIG.

In the biological strike step (S1541), as the biological impeller 1518 is rotated and the biological first blade 15192 and the biological second blade 15194 are rotated, the treated water and gas supplied to the rotating space unit 1513 are hit. do.

In addition, in the first biological mixing step (S1542), the treated water and gas hitting are guided along the biological mixing path in the direction of the center of the biological impeller 1518 to be first mixed.

The second biological mixing step (S1543) is performed by any one of the biological mixing furnaces through the biological mixing communication hole (15199) formed to communicate the first biological mixing furnace (15196) and the second biological mixing furnace (15198) to each other. The secondary mixed liquid is transferred to another biological mixing furnace for secondary mixing.

Here, the biological mixed liquid generating step (S1540) further includes a third biological mixing step (S1544).

In the third biological mixing step (S1544), the mixed liquid passing through the biological pipe mixing unit 1570 is thirdly mixed.

Accordingly, the treated water and gas, which have been mixed two times through the second biological mixing step (S1543), are mixed three times to improve the mixing rate.

This, when the mixed liquid moves to the aeration tank 1200, it is possible to increase the amount of fine bubbles generated, it is possible to improve the treatment efficiency of raw water.

In addition, the biological microporous supply step (S1500) further includes a biological microbubble control step (S1560), as shown in FIG.

In this biological microfluidic cell control step (S1560), the biological microfluidic cell control unit 1560 receiving a signal from the biological microfluidic cell pressure sensor 1550 provided in the biological mixed liquid supply pipe 1540 uses the biological microfluidic cell pump 1510. Control to control the amount of fine bubbles produced.

The biological microporous control step (S1560) includes a biological pressure signal receiving step (S1561) and a biological microporous control step (S1562).

In step S1561 of receiving a biological pressure signal, a signal from the biological microporous pressure sensor 1550 provided in the biological mixed liquid supply pipe 1540 is received.

In addition, the biological micropore control step (S1562) controls the biological microporous pump 1510 by the biological microporous control unit 1560 receiving a signal from the biological microporous pressure sensor 1550 to control the treated water at the rear end of the aeration tank 1200. And, the amount of microbubbles generated is controlled by controlling the amount of the treated water in the anoxic tank 1300 and the gas inflow amount of the biological air supply unit 1530.

Here, the biological microbubble supply step (S1500) further includes a second biological microbubble control step (S1567).

In the second biological microbubble control step (S1567), the biological microbubble control unit 1560 of the biological microbubble control step (S1560) is linked with the wastewater supply unit 1400 of the sewage supply step (S1000) to correspond to the amount of inflow of the sewage and microbubbles. Control the amount of generation.

As shown in FIG. 8, the treated water passing through the wastewater treatment apparatus 10 using the microbubble aeration process passes through the sedimentation unit 20.

The sedimentation part 20 is provided with an inclined separating plate 22 inside to precipitate and separate the sediment downward, and removes the sediment from the treated water discharged through the oxygen-free tank 1300.

And the treated water that has passed through the sedimentation unit 20 is removed by the solid-liquid separation device 30 to remove the suspended matter.

The solid-liquid separation device 30 is provided to remove fine particles suspended in the treated water from which the precipitate has been removed by the settling unit 20.

As shown in FIG. 9, the solid-liquid separation device 30 includes a storage tank 100 and a raw water supply unit 200, a concentrate discharge unit 300, a treated water discharge unit 400, and an ozone microbubble supply unit 500. , A plasma generating unit 1000 and a scraping unit 600.

The storage tank 100 is opened to the upper side of the inside to form a storage space 102 for containing the treated water (hereinafter referred to as “raw water”) that has passed through the wastewater treatment device 10.

In addition, the raw water supply unit 200 is provided to supply raw water to the storage space 102 of the storage tank 100.

Here, the raw water includes even high-concentration wastewater such as general wastewater, drinking wastewater, livestock wastewater, and digestive wastewater.

The concentrate discharge unit 300 is provided to discharge fine particles floating in the raw water of the storage tank 100.

In addition, the treated water discharge unit 400 is provided to discharge the treated water separated from the fine particles in the raw water of the storage tank 100.

The ozone microbubble supply unit 500 generates ozone microbubbles using the treated water of the storage tank 100 and supplies them to the storage space unit 102.

In addition, the plasma generating unit 1000 is provided to discharge plasma in the storage space 102 of the storage tank 100.

The scraping unit 600 is located on the upper side of the storage tank 100, and separates and discharges the sludge floated by the moving scraper 640 to the concentrate discharge unit 300.

Accordingly, the water treatment apparatus 10 using plasma and ozone microbubbles can be separated by mixing the supplied raw water and ozone microbubbles, as the ozone microbubbles and fine particles contained in the raw water are attached and floated.

The separated fine particles floating are discharged to the concentrate discharge unit 300 by the scraping unit 600, and a part of the treated water is discharged to the treated water discharge unit 400, and the other part is the ozone microbubble supply unit 500 ) To generate ozone microbubbles and circulate them to the storage space unit 102, thereby diluting raw water and supplying ozone microbubbles to improve treatment efficiency.

Here, the storage space part 102 of the storage tank 100 includes a mixing space part 102a, a floating space part 102b, and a separation space part 102c, as shown in FIG. 10.

The mixing space unit 102a is provided to mix the raw water supplied from the raw water supply unit 200 and the ozone microbubble supplied from the ozone microbubble supply unit 500.

In addition, in the floating space part 102b, raw water and ozone microparticles mixed in the mixing space part 102a are moved, and the ozone microparticles and attached microparticles are floated and separated.

The separation space part 102c is stored by moving the treated water from which the fine particles are separated from the floating space part 102b.

The mixing space part 102a, the floating space part 102b, and the separation space part 102c are partitioned by a first partition wall 110 and a second partition wall 120.

The first partition wall 110 is provided to partition the mixing space part 102a and the floating space part 102b, and the second partition wall 120 divides the floating space part 102b and the separation space part 102c. Is equipped for.

The first partition wall 110 and the second partition wall 120 are formed to communicate with the upper end of the corresponding space and are moved step by step.

Here, the upper end of the second partition wall 120 is positioned below the upper end of the first partition wall 110.

In addition, the upper end 112 of the first partition wall 110 is formed to be inclined toward the floating space portion 102b, is formed at 30 to 60 degrees, and is preferably formed at 45 degrees.

In addition, at least one treated water communication 122 for communicating the lower end of the second partition wall 120 with the lower end of the floating space 102b and the lower end of the separation space 102c is formed.

The area of the treated water communication 122 is formed to be smaller than the area communicated with the upper end of the second partition wall 120, and the amount of movement of the treated water moved through the treated water communication 122 is the upper communication part of the second partition wall 120 It is 5 to 30% of the amount of treated water that is transferred through.

And the raw water supply unit 200 includes a raw water supply pipe 210, a raw water pump 220, a flow sensor 230, and a raw water supply control unit 240.

The raw water supply pipe 210 is provided to supply raw water to the lower end of the mixing space 102a, and the raw water pump 220 is provided to supply raw water through the raw water supply pipe 210.

In addition, the flow sensor 230 is provided to measure the amount of raw water introduced through the raw water supply pipe 210, and the raw water supply control unit 240 controls the raw water pump 220 by receiving a signal from the flow sensor 230. It is equipped to do.

In addition, the scraping part 600 includes a first rotating part 610 and a second rotating part 620, a connecting member 630, a scraper 640, and a driving part 650.

The first rotating part 610 is provided to be rotatable above the rear end of the separation space part 102c of the storage tank 100.

In addition, the second rotating part 620 is provided to be rotatable above the front end of the floating space part 102b of the storage tank 100.

The connecting member 630 is provided to rotate the first rotating part 610 and the second rotating part 620 in a caterpillar orbit in the same direction, and is preferably formed of a chain.

And the scraper 640 is provided on the connecting member 630 and rotates equally, so that the fine particles floating in the storage space 102 of the storage tank 100 are scraped and discharged to the concentrate discharge unit 300. .

The scraper 640 is formed to be curved, and is formed to be bent in the opposite direction in which the lower end is rotated.

Accordingly, when the ozone microbubbles with floating fine particles are discharged, the movement of the treated water is minimized.

The driving unit 650 is provided to rotate the first rotation unit 610 or the second rotation unit 620 to rotate the connecting member 630 and the scraper 640 in an infinite orbit.

And the scraping part 600 further includes a scraping cleaning part 660.

This scraping and cleaning unit 660 is provided at the upper end of the concentrate discharge unit 300, and discharges the floating fine particles to the concentrate discharge unit 300, and then upwards along the first rotating unit 610. The surface of the scraper 640 is cleaned by scraping the surface of the rotating scraper 640.

The scraping and washing part 660 has elasticity and is formed to be inclined downward from the upper end of the concentrate discharge part 300 toward the first rotating part 610.

The concentrated liquid scraped from the surface of the scraper 640 falls to the concentrated liquid discharge unit 300 and is discharged.

In addition, as shown in FIG. 11, the ozone microbubble supply unit 500 includes an ozone microbubble pump 510 and a treated water supply pipe 520, an air supply unit 530, an ozone gas supply unit 580, and a mixed liquid supply pipe. (540), and an ozone microbubble pressure sensor 550 and an ozone microbubble control unit 560.

The ozone micropore pump 510 is provided to form an ozone mixture liquid by mixing the supplied treated water and gas.

And the treated water supply pipe 520 is provided to supply the treated water of the separation space unit 102c to the ozone micropore pump 510, the air supply unit 530 supplies air to the ozone micropore pump 510 It is equipped to do.

The ozone gas supply unit 580 is provided to supply gas to the ozone micropore pump 510, and the mixed liquid supply pipe 540 contains the ozone mixed liquid formed by the ozone micropore pump 510 into the mixing space unit 102a. It is equipped to feed into.

In addition, the ozone micropore pressure sensor 550 is provided to measure the pressure of the ozone mixed liquid that is moved along the mixed liquid supply pipe 540.

The ozone micropore control unit 560 controls the ozone microporous pump 510 by receiving a signal from the ozone microporous pressure sensor 550.

In other words, by receiving a signal from the ozone microbubble pressure sensor 550 to control the supply pressure, it is natural that the control is performed in connection with the supply amount of raw water or the amount of treated water.

Accordingly, the ozone microbubble control unit 560 is connected with the raw water supply control unit 240 to control the generation amount of ozone microbubbles when the supply of raw water is small or stopped.

Looking at the operating state of the ozone microbubble supply unit 500, the treated water is supplied through the treated water supply pipe 520 by the ozone microbubble pump 510

When the air supplied from the air supply unit 530 and the ozone mixture liquid mixed with the ozone gas supplied from the ozone gas supply unit 580 are supplied to the mixing space unit 102a through the ozone mixture liquid supply pipe 540, normal pressure And generates ozone microbubbles.

And the ozone microbubble supply unit 500 further includes a pipe mixing unit 570.

The piping mixing unit 570 is provided for mixing by passing the ozone mixed liquid moving along the mixed liquid supply pipe 540 in a spiral manner.

The piping mixing unit 570 includes a piping mixing body 572 and a piping mixing screw 574.

The piping mixing body 572 is provided to communicate with the mixed liquid supply pipe 540.

In addition, the piping mixing screw 574 is provided in the piping mixing body 572 to guide the transported ozone mixed liquid in a spiral manner for tertiary mixing.

Accordingly, it is possible to improve the efficiency of generating ozone microbubbles by improving the mixing ratio of the ozone mixture liquid.

Here, the ozone micropore pump 510 includes a pump body 512, a pump inlet 514, a pump outlet 516, and an impeller 518, as shown in FIG. 12.

The pump body 512 has a rotating space part 513 formed therein.

And the pump inlet 514 is formed in the pump body 510 for supplying the treated water and gas to the rotating space 513.

The pump outlet 516 is provided to supply the ozone mixed liquid formed in the rotating space 513 to the mixed liquid supply pipe 540.

In addition, the impeller 518 has a double wing 519, and is rotatably provided in the rotational space 513 of the pump body 512.

Here, the area of the pump inlet 514 is formed larger than the area of the pump outlet 516.

In other words, the area of the pump inlet 514 is formed to be 1 to 4 times the area of the pump outlet 516.

This means that the pressure discharged to the pump outlet 516 is lower than the pressure introduced to the pump inlet 514, and the speed is reduced by the lowered pressure to form bubbles first.

Thereafter, when supplied to the mixing space part 102a, it is transformed to normal pressure and generates ozone microbubbles.

In addition, the double wing 519 includes a first wing 5192 and a second wing 5194, a first mixing furnace 5194 and a second mixing furnace 5198.

A plurality of first blades 5192 are formed at regular intervals along the edge of one surface of the impeller 518.

In addition, a plurality of second blades 5194 are formed at regular intervals along the edge of the other surface of the impeller 518.

The first mixing furnace 5194 is formed between the plurality of first blades 5192 and provided to guide and mix the treated water and gas flowing through the pump inlet 514.

In addition, the second mixing furnace 5198 is formed between the plurality of second blades 5194 and is provided to guide and mix the treated water and gas flowing through the pump inlet 514.

Here, at least one mixing communication hole 5199 for communicating the first mixing furnace 5194 and the second mixing furnace 5198 is further formed.

The mixing communication hole 5199 moves the treated water and gas moving along the first mixing furnace 5196 to the second mixing furnace 5198, and the treated water and gas moving along the second mixing furnace 5198 Is moved to the first mixing furnace 5194 to improve the mixing ratio.

The mixing communication hole 5199 is formed by an inclined yarn from the first mixing furnace 5194 to the second mixing furnace 5198, and is formed to be inclined downwardly from the edge of the impeller 518 to the center.

In addition, the mixing communication hole (5199) is formed to gradually decrease in diameter from the end where the mixed liquid is introduced to the end that is discharged.

Accordingly, by increasing the speed of the mixed liquid to be moved, it is moved at a different speed than the mixed liquid hit by the double wings 519 to improve the mixing rate.

In addition, the first blade 5192 is positioned between two adjacent second blades 5194, for example.

In addition, the first blade 5192 and the second blade 5194 are formed to be orthogonal to the corresponding surface of the impeller (518).

Each of the first wing 5192 and the second wing 5194 is formed in 40 to 100.

And the ozone micropore pump 510 is rotated at 1,900 to 3,600 rpm, and the treated water introduced through the treated water supply pipe 520 is 10 to 60 wt% of the treated water of the separation space unit 102c, and the ozone gas supply unit The amount of gas supplied from 530 is 0.5 to 4% of the treated water introduced through the treated water supply pipe 520.

In addition, it is deformed to normal pressure in the mixing space part 102a, and the ozone microbubble is 10 to 75 μm.

Here, the micro-bubbles and ozone micro-bubbles supplied from the ozone micro-bubble supply unit 500 generate OH radicals as well as a function of floating micro-particles and a sterilization and disinfection function.

More specifically, about 95% of the microbubbles float microparticles, and about 5% of them explode in water to generate OH radicals.

In addition, about 60% of the ozone microbubbles float microparticles, and about 40% of the ozone microbubbles are exploded in water, generating more OH radicals than the amount of OH radicals generated when microbubbles are exploded by air.

This OH radical can oxidize and decompose dissolved organic matter through advanced oxidation.

Accordingly, the ozone microbubble supply unit 500 may sterilize and disinfect, and simultaneously remove the floating material and the soluble material.

In addition, as shown in FIG. 13, the plasma generating unit 1000 includes a plasma discharge unit 1010, a plasma power supply unit 1020, and a plasma control unit 1030.

The plasma discharge unit 1010 is provided in the storage space 102 of the storage tank 100 and is provided to discharge plasma.

In addition, the plasma power supply unit 1020 is provided to supply power to the plasma discharge unit 1010.

The plasma power supply unit 1020 supplies high voltage power.

The plasma control unit 1030 controls the plasma power supply unit 1020 and the plasma discharge unit 1010 to control the amount of plasma generated.

The plasma discharge unit 1010 includes a dielectric tube 1012, a discharge electrode 1014, and a counter electrode 1016.

The dielectric tube 1012 is provided in the mixing space 102a, and the discharge electrode 1014 is located inside the dielectric tube 1012.

The dielectric tube 1012 is a circular tube and is formed of any one selected from a quartz tube, a glass tube, and a ceramic tube.

In addition, the discharge electrode 1014 is formed in a coil shape.

The counter electrode 1016 is provided outside the dielectric tube 1012 so as to correspond to the discharge electrode 1014.

In addition, the plasma generating unit 1000 further includes a gas injection unit 1040.

The gas injection part 1040 is provided to maintain the internal gas pressure of the dielectric tube 1012.

The gas injection unit 1040 includes a gas pump 1042, a dielectric tube pressure sensor 1044, and a gas control unit 1046.

The gas pump 1042 supplies gas into the dielectric tube 1012.

In addition, the dielectric tube pressure sensor 1044 is provided to measure the internal pressure of the dielectric tube 1012.

The gas control unit 1046 receives a signal from the dielectric tube pressure sensor 1044 and controls the gas pump 1042 to adjust the internal pressure of the dielectric tube 1012.

The plasma generated by the plasma generating unit 1000 generates fine bubbles (O ₂ , H ₂ , O _3, etc.) by about 10% to float fine particles, and OH radicals are generated by about 90%. .

The OH radicals generated by the plasma generating unit 1000 may oxidize and decompose dissolved organic matter through advanced oxidation.

Here, the plasma generating unit 1000 may improve the removal rate of the dissolved material by the microbubble supply unit 500 by about 30% or more.

And, as shown in Figure 14, the solid-liquid separation apparatus 10 using a plasma and ozone microbubbles further includes a treatment water tank (700).

The treatment water tank unit 700 includes a treatment water tank 710 and a treatment water tank pump 720.

The treatment water tank 710 stores the treated water discharged through the treatment water discharge unit 400, and the treatment water tank pump 720 is provided to transfer the treated water stored in the treatment water tank 710 to a wastewater treatment plant.

In addition, the solid-liquid separation apparatus 10 using plasma and ozone microbubbles further includes a fermentation unit 800 and a circulation unit 900.

The fermentation unit 800 includes a raw water tank 810 and an acid fermentation tank 820, a pulverization unit 830, a digester 840, a storage tank 850, a second supply pump 860 and a gas discharge unit 870 do.

The raw water tank 810 stores the concentrate discharged through the concentrate discharge unit 300, and the acid fermentation tank 820 stores the concentrate stored in the raw water tank 810 and is fermented.

In addition, the pulverizing unit 830 pulverizes the concentrated liquid transferred from the raw water tank 810 to the acid fermentation tank 820.

The digester 840 is provided to store and decompose the fermented liquid fermented in the acid fermentation tank 820 using anaerobic organisms.

In addition, the storage tank 850 is provided to temporarily store some of the concentrate discharged through the concentrate discharge unit 300.

The second supply pump 860 is provided to supply the concentrated liquid stored in the storage tank 850 to the digester 840.

And the gas discharge unit 870 is provided to discharge the gas generated in the digester (840).

The gas discharged from the gas discharge unit 870 is biogas and includes hydrogen, methane, and the like.

Here, according to the solid-liquid separation apparatus 10 using plasma and ozone microbubbles, the solid-liquid separation rate is improved by 60% or more compared to the prior art, and the methane generation amount is improved by 15% or more than the conventional one.

In addition, the circulation unit 900 includes a digestive solution storage tank 910, a digestive solution discharge unit 920, and a circulation pump 930.

The digestive liquid storage tank 910 stores the digestive liquid decomposed in the digestion tank 840.

In addition, the digestive fluid discharge unit 920 transfers the digestive fluid stored in the digestive fluid storage tank 910 to a wastewater treatment plant.

The circulation pump 930 circulates the digestive fluid stored in the digestive fluid storage tank 910 to the storage tank 100.

Accordingly, the separation efficiency can be improved, as well as used as compost or fertilizer, and treatment efficiency in a wastewater treatment plant can be improved.

As shown in FIG. 15, the water treatment method using a water treatment device using plasma and ozone microbubbles includes a raw water supply step (S10) and an ozone microbubble supply step (S20), a plasma microbubble supply step (S30), Ozone microbubble mixing step (S40), ozone microbubble floating step (S50), and a concentrated liquid separation step (S60) and treated water discharging step (S70).

In the raw water supply step (S10), raw water is supplied to the storage space 102 by the raw water supply unit 200 in a state in which raw water, concentrate, and treated water are contained in the storage space 102 of the storage tank 100.

In the ozone microbubble supply step (S20), after the ozone microbubble supply unit 500 sucks the treated water, air, and ozone gas from the storage space unit 102 to generate an ozone mixed liquid, the storage space unit 102 It generates ozone microbubbles as it is supplied to.

In the plasma micro-bubble supply step (S30), as plasma is formed in the water storage space 102 by the plasma generating unit 1000, micro-bubbles are generated.

In addition, in the ozone microporous mixing step (S40), the ozone microporous and raw water are mixed so that the fine particles contained in the raw water are attached to the ozone microporous.

In addition, in the ozone microbubble floating step (S50), the ozone microbubble to which the microparticles are attached is floated upward and separated.

In the concentrated liquid separation step (S60), the concentrated liquid floated by the scraping part 600 is scraped to the concentrated liquid discharge part 300 and discharged.

In addition, the treated water discharging step (S70) discharges the treated water from which the concentrated liquid has been separated to the treated water discharging unit 400.

Here, the raw water supply step (S10) includes a raw water inflow step (S11), an inflow amount measurement step (S12), and a raw water amount control step (S13), as shown in FIG.

In the raw water inflow step S11, raw water is supplied to the mixing space 102a of the water storage space 102 along the raw water supply pipe 210 by the raw water pump 220 of the raw water supply unit 200.

In addition, the inflow amount measurement step (S12) measures the amount of raw water introduced through the raw water supply pipe 210 by the flow sensor 230 of the raw water supply unit 200.

In the raw water amount control step (S13), the raw water pump 220 is controlled by the raw water supply control unit 240 that has received the signal from the flow sensor 230 to control the inflow raw water amount.

As shown in FIG. 17, the ozone microbubble supply step (S20) includes a treated water inflow step (S21) and an air inflow step (S22), an ozone gas inflow step (S23), an ozone mixed liquid generation step (S24) and ozone. It includes a microbubble generation step (S25).

In the treated water inflow step (S21), a plurality of first wings 5192 and a first mixing furnace 5194 are formed on one side, and a plurality of second wings 5194 and a second mixing furnace 5198 are formed on the other side. The impeller 518 is stored along the treated water supply pipe 520 by the ozone micropore pump 510 of the ozone microporous supply unit 500 provided to be rotatable in the rotation space 513 of the pump body 512. The treated water of the water space part 513 flows into the ozone micropore pump 510.

In the air inflow step (S22), when the impeller 518 is rotated so that the treated water is introduced, air is introduced into the rotating space part 513 through the air supply part 530.

In the ozone gas inflow step (S23), when the impeller 518 is rotated so that the treated water is introduced, ozone gas is introduced into the rotating space part 513 through the ozone gas supply part 580.

In the ozone mixed liquid generation step (S24), the treated water and air supplied by a plurality of rotating first blades 5192, second blades 5194, first mixing furnace 5195, and second mixing furnace 5198 , The ozone gas is blown and mixed to produce an ozone mixed liquid.

In addition, in the ozone microbubble generation step (S25), as the ozone mixed liquid generated by the impeller 518 is supplied to the mixing space 102a through the ozone mixed liquid supply pipe 540, the pressure is lowered to normal pressure and the microbubbles Create

In addition, the ozone mixed liquid generating step (S24) includes a striking step (S241), a first mixing step (S242), and a second mixing step (S243), as shown in FIG. 18.

In the striking step (S241), as the impeller 518 is rotated so that the first blade 5192 and the second blade 5194 are rotated, the treated water and ozone gas supplied to the rotating space part 513 are struck.

In addition, in the first mixing step (S242), the treated water and ozone gas that have been hit are guided along the mixing furnace in the direction of the center of the impeller 518 to be first mixed.

The second mixing step (S243) is a mixed liquid that is first mixed by any one mixing furnace through the mixing communication hole 5199 formed to communicate the first mixing furnace 5196 and the second mixing furnace 5198 with each other. Is moved to another mixing furnace for secondary mixing.

Here, the mixed liquid generation step (S24) further includes a third mixing step (S244).

In the third mixing step (S244), the mixed liquid passing through the pipe mixing unit 570 is thirdly mixed.

Accordingly, the treated water and ozone gas, which have been mixed two times through the second mixing step (S243), are mixed three times to improve the mixing ratio.

This, when the ozone mixed liquid moves to the mixing space 102a, it is possible to increase the amount of ozone microbubbles generated, thereby improving the treatment efficiency of raw water.

In addition, the ozone microbubble supply step (S20) further includes an ozone microbubble control step (S26), as shown in FIG. 19.

In this ozone microbubble control step (S26), the ozone microbubble control unit 560 receiving a signal from the ozone microbubble pressure sensor 550 provided in the ozone mixed liquid supply pipe 540 uses the ozone microbubble pump 510. Control to control the amount of ozone microbubbles produced.

The ozone microbubble control step (S26) includes a pressure signal receiving step (S261) and an ozone microbubble control step (S262).

In the pressure signal receiving step (S261), a signal from the ozone microbubble pressure sensor 550 provided in the ozone mixed liquid supply pipe 540 is received.

In addition, the ozone micropore control step (S262) is performed by controlling the ozone microporous pump 510 by the ozone microporous control unit 560 receiving a signal from the ozone microporous pressure sensor 550 to process the separation space unit 102c. The amount of ozone microbubbles generated is controlled by controlling the amount of ozone gas inflow from the water and the ozone gas supply unit 530.

Here, the ozone microbubble supply step (S20) further includes a second ozone microbubble control step (S27).

In the second ozone microbubble control step (S27), the ozone microbubble control unit 560 of the ozone microbubble control step (S26) is connected with the raw water supply control unit 240 of the raw water quantity control step (S13) to correspond to the raw water inflow amount. Control the amount of ozone microbubbles generated

In addition, the plasma micro-bubble supply step (S30) includes a plasma power supply step (S31), a plasma generation step (S32), and a plasma micro-bubble generation step (S33), as shown in FIG.

In the plasma power supply step (S31), high voltage power is supplied to the plasma discharge unit 1010 having the dielectric tube 1012, the discharge electrode 1014, and the counter electrode 1016 by the plasma power supply unit 1020.

In the plasma generating step (S32), plasma is generated in the plasma discharge unit 1010 by the high voltage power of the plasma power supply unit 1020.

In the plasma micro-bubble generation step (S33), plasma micro-bubbles are generated in the mixing space portion 102a by the generated plasma.

The plasma microbubbles are combined with fine particles included in raw water together with the ozone microbubbles generated by the ozone microbubble supply unit 500 to improve separation efficiency.

The plasma microbubble supply step (S30) further includes a gas pressure control step (S34).

In this gas pressure control step (S34), the internal gas pressure of the dielectric tube 1012 is maintained by a gas injection unit 1040 having a gas pump 1042, a dielectric tube pressure sensor 1044, and a gas control unit 1046. .

As shown in FIG. 21, the concentrate separation step (S60) includes a scraping step (S61), a concentrate discharge step (S62), and a scraper washing step (S63).

In the scraping step (S61), as the connecting member 630 is rotated by the drive unit 650 of the scraping unit 600, the scraper 640 is rotated together, so that the floating space part 102b and the separation space part ( The fine particles floating in 102c) are scraped.

In addition, in the concentrated solution discharging step (S62), the concentrated solution is discharged to the concentrated solution discharging unit 300 by the scraping unit 600.

In the scraper cleaning step (S63), the fine particles are discharged by the scraping cleaning unit 660 provided at the upper end of the concentrated solution discharging unit 300, and the scraper 640 passing through the first rotating unit 610 is washed.

In addition, as shown in Fig. 22, the wastewater treatment method using plasma and ozone microbubbles further includes a post-treatment step (S80), a fermentation step (S90), and a circulation step (S100).

The post-treatment step (S80) includes a treatment water tank storage step (S81) and a treated water transfer step (S82), as shown in FIG. 23.

In the treatment water tank storage step S81, the treated water discharged through the treated water discharge unit 400 in the treatment water discharge step S60 is stored in the treatment water tank 710.

And the treated water transfer step (S82) transfers the treated water stored in the treatment water tank 710 by the treatment water tank pump 720 to the wastewater treatment plant.

In addition, as shown in FIG. ), a concentrated solution addition step (S96) and a gas discharge step (S97).

In the raw water tank storage step (S91), the concentrated liquid discharged through the concentrated liquid discharge unit 300 is stored in the raw water tank 810.

In the concentrated liquid pulverization step (S92), the concentrated liquid in the raw water tank 810 to be stored in the acid fermentation tank 820 is pulverized by the pulverizing unit 830.

In the concentrated liquid fermentation step (S93), the concentrated liquid pulverized by the pulverizing unit 830 is stored in the acid fermentation tank 820 for fermentation.

In addition, in the concentrated liquid decomposition step (S94), the fermented liquid fermented in the acid fermentation tank 820 is stored in the digester 840 to be decomposed into anaerobic organisms.

In the concentrated liquid temporary storage step (S95), some of the concentrated liquid discharged through the concentrated liquid discharge unit 300 is temporarily stored in the storage tank 850.

In addition, in the concentrated liquid addition step (S96), the concentrated liquid stored in the storage tank 850 by the second supply pump 860 is supplied to the digester 840.

In the gas discharging step (S97), the gas generated in the digester 840 is discharged by the gas discharging unit 870.

In addition, the circulation step (S100) includes a digestive liquid storage step (S101), a digestive liquid transfer step (S102), and a digestive liquid circulation step (S103), as shown in FIG.

In the digestive liquid storage step (S101), the digestive liquid decomposed in the digester 840 is stored in the digestive liquid storage tank 910.

In addition, the digestive liquid transfer step (S102) transfers the digestive liquid stored in the digestive liquid storage tank 910 by the digestive liquid discharge unit 920 to a wastewater treatment plant.

In the extinguishing liquid circulation step (S103), the extinguishing liquid stored in the extinguishing liquid storage tank 910 by the circulation pump 930 is circulated to the storage tank 100.

10: wastewater treatment device 1100: anaerobic tank
1200: aeration tank 1300: anoxic tank
1400: sewage water supply unit 1500: transport unit
1600: micro-bubble supply unit 1610: micro-bubble pump
1620: treated water supply pipe 1630: air supply
1640: mixed liquid supply pipe 1650: pressure sensor
1660: fine bubble control unit 1670: piping mixing unit
1700: aerated stirrer 1800: anoxic stirrer
20: sedimentation unit 30: solid-liquid separation device

Claims (10)

An anaerobic tank for releasing phosphorus by removing organic matter from wastewater stored by anaerobic bacteria;
An aeration tank for overabsorbing and nitrifying phosphorus discharged by storing the treated water from which nitrogen has been removed in the anaerobic tank;
An oxygen-free tank in which the treated water transferred from the aeration tank is stored and nitrogen is removed;
A wastewater supply unit for supplying wastewater to the anaerobic tank;
A conveying unit for conveying the treated water from the anoxic tank to the aeration tank;
A biological microbubble supply unit for generating microbubbles using the treated water and supplied gas from the aeration tank and the oxygen-free tank and supplying them to the aeration tank;
An aeration stirrer for agitating the treated water stored in the aeration tank; And
Wastewater treatment apparatus using a microbubble aeration process comprising; an oxygen-free stirring unit for agitating the treated water stored in the oxygen-free tank. The method of claim 1, wherein the biological microparticle supply unit,
Biological micropore pump for forming a mixed liquid by mixing the supplied treated water and gas;
A biological treated water supply pipe for supplying one or more treated water of the aeration tank and the anoxic tank to the microbubble pump;
A biological air supply unit for supplying air to the biological micropore pump;
A biological mixed liquid supply pipe for supplying the mixed liquid formed by the biological micropore pump to the aeration tank;
A biological pressure sensor for measuring the pressure of the mixed liquid moving along the biological mixed liquid supply pipe; And
Including; a biological micro-pore control unit for receiving the signal from the biological pressure sensor to control the biological micro-pore pump,
When the treated water is supplied through the biological treatment water supply pipe by the biological microporous pump and the mixed liquid mixed with air supplied from the biological air supply unit is supplied to the aeration tank through the biological mixed liquid supply pipe, it is transformed to normal pressure and fine Wastewater treatment apparatus using a microbubble aeration process, characterized in that generating air bubbles. The method of claim 2, wherein the biological micropore pump,
A biological pump body having a rotating space portion formed therein;
A biological pump inlet formed in the biological pump body for supplying treated water and gas to the rotating space part;
A biological pump outlet for supplying the gas-liquid mixed liquid formed in the rotating space to the biological mixed liquid supply pipe; And
A wastewater treatment apparatus using a microbubble aeration process comprising; a biological impeller that has a biological double wing and is rotatably provided in the rotating space portion of the biological pump body. The method of claim 3, wherein the biological double wing,
A plurality of biological first wings formed at predetermined intervals along an edge of one surface of the biological impeller;
A plurality of biological second wings formed at regular intervals along the edge of the other surface of the biological impeller;
A first biological mixing path formed between the plurality of biological first wings to guide and mix the treated water and gas flowing through the biological pump inlet; And
A sewage treatment apparatus using a microbubble aeration process comprising a; a second biological mixing furnace formed between the plurality of biological second blades and guided and mixed with the treated water and gas flowing through the biological pump inlet. The method of claim 4, wherein the biological first wing,
Wastewater treatment apparatus using a microbubble aeration process, characterized in that located between the two adjacent biological second wings. The method of claim 4, wherein the biological first wing and the biological second wing,
Wastewater treatment apparatus using a microbubble aeration process, characterized in that formed to be orthogonal to the surface of the biological impeller. According to 4,
A sewage treatment apparatus using a microbubble aeration process, characterized in that at least one biological mixing communication hole for communicating the first biological mixing furnace and the second biological mixing furnace with each other is formed. The method of claim 2,
A wastewater treatment apparatus using a microbubble aeration process further comprising: a biological pipe mixing unit for mixing by passing the mixed solution moving along the biological mixed liquid supply pipe in a spiral shape. The wastewater supply step of supplying the wastewater to the anaerobic tank by the wastewater supply unit of the wastewater treatment apparatus of claim 1 to claim 8;
The anaerobic treatment step of releasing phosphorus by removing organic matter from the wastewater stored in the anaerobic tank by anaerobic bacteria includes;
An aeration treatment step of overabsorbing and nitrifying phosphorus released by storing the treated water from which nitrogen has been removed in the anaerobic tank in the aeration tank;
A denitrification step in which the treated water transferred from the aeration tank is stored in an oxygen-free tank to remove nitrogen;
A transfer step of returning the treated water from the anoxic tank to the aeration tank;
A biological microbubble supply step of generating microbubbles by using one or more of the treated water and supplied gas of the aeration tank and the anoxic tank and supplying them to the aeration tank; And
A method for treating wastewater using a microbubble aeration process comprising a stirring step of agitating each of the treated water stored in the aeration tank and the anoxic tank by the aeration and anoxic stirrer. The method of claim 9, wherein the biological microporous supply step,
A biological impeller with a plurality of first biological blades and a biological first mixing path is formed on one side, and a plurality of second biological blades and a second biological mixing path is formed on the other surface to be rotatable in the rotating space of the biological pump body. A biologically treated water inlet step in which the treated water is introduced into the biological fine fabric pump along the biologically treated water supply pipe by the biological fine fabric pump of the biological fine fabric supply unit;
When the biological impeller is rotated so that the treated water is introduced, a biological air introduction step in which air is introduced into the rotating space through the biological air supply unit;
When the biological impeller is rotated so that the treated water is introduced, a biological gas introduction step in which gas is introduced into the rotating space through the biological gas supply unit;
A biological mixed liquid generating step of striking and mixing the treated water and air supplied by the rotating plurality of first biological blades, second biological blades, first biological mixing furnace, and second biological mixing furnace to produce a mixed liquid; And
As the mixed liquid generated by the biological impeller is supplied to the aeration tank through the biological mixed liquid supply pipe, the pressure is lowered to normal pressure to generate microbubbles; a method for treating wastewater using a microbubble aeration process including; .

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