KR102477181B1 - High concentration organic wastewater pretreatment system using ozone microbubble and ultraviolet light - Google Patents

Abstract

The high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays of the present invention includes an ozone generator for generating air-containing ozone for pretreatment of the organic wastewater stored in a reaction chamber; After being discharged from the ozone generator, ozone at or below the predetermined ozone flow rate that is moved along the inlet path and introduced into the inside, the first fluid, which is pretreated water that is pretreated by ozone water in the reaction chamber and includes air and ozone, and ozone an ozonated water generator for generating ozone water composed of ozone microbubbles using a second fluid in which air is dissolved; a pump that sucks the first fluid and the second fluid and introduces them into the ozonated water generator; an injector for injecting the ozone water discharged from the ozone water generator into the reaction chamber; an ultraviolet irradiator comprising an ultraviolet lamp for irradiating ultraviolet rays into the reaction chamber and a quartz tube for enclosing the ultraviolet rays to transmit the ultraviolet rays; The contaminants adhered to the quartz tube are cleaned while the ozone water flowing into the reaction chamber is rotated in the direction of the whirl flow, and the ozone or ozone water moving along the bypass path partitioned from the inflow path is discharged into the reaction chamber. A radical shaft that sprays and generates OH radicals by the interaction between ultraviolet rays and ozone or ozone water; and a blade for rotating the radical shaft in the direction of the swirling flow of the ozone water flowing into the reaction chamber.

Description

High concentration organic wastewater pretreatment system using ozone microbubble and ultraviolet light}

The present invention relates to a pretreatment system for high-concentration organic wastewater using ozone microbubbles and ultraviolet rays, and more particularly, to a high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays capable of efficiently treating recalcitrant organic substances contained in high-concentration organic wastewater. It is about a wastewater pretreatment system.

Among the methods for treating polluted water such as sewage and wastewater, the oxidation method is a method of treating pollutants by injecting a substance with strong oxidizing power such as chlorine into the polluted water. However, the use of chlorine has a problem of generating Trihalomethane (THM), so the substances used as an alternative are ultraviolet rays and ozone.

UV rays can achieve high disinfection effects such as chlorine without generating carcinogenic by-products such as THM generated during chlorination, so most wastewater treatment facilities are introducing UV rays as final treatment facilities. However, UV-only treatment has a disadvantage in that the ability to treat other contaminants other than the disinfection effect targeting pathogenic microorganisms is very low. Due to the recent increase in the use of chemicals, the number of non-decomposable organic substances remaining in wastewater treatment water is also increasing, and thus, there is a demand for strengthening the function of ultraviolet treatment facilities.

Ozone has excellent oxidizing power compared to chlorine and excellent decomposition ability for THM, and the effect of increasing dissolved oxygen can also be expected.

However, ozone has high oxidizing power, but since it selectively reacts with organic matter, organic matter that cannot be oxidized remains, and depending on the characteristics of wastewater, pollutants cannot be completely decomposed into carbon dioxide and water, producing by-products such as aldehyde or bromine. In the case of treating wastewater containing ions, there is a disadvantage of generating by-products such as bromate.

As a way to solve this problem, an advanced oxidation process (AOP) has been proposed.

AOP technology treats contaminated water by using oxidizing agents such as ozone or hydrogen peroxide together or by irradiating ultraviolet rays to these oxidizing agents. It oxidizes and decomposes (or removes) organic substances contained in water, and is particularly effective in decomposing non-degradable organic substances.

AOP technology includes, for example, a UV photolysis method (UV/O ₃ or UV/H ₂ O ₂ ) in which an oxidizing agent such as ozone or hydrogen peroxide is irradiated with ultraviolet rays, and a Peroxone method in which ozone and hydrogen peroxide are used together. The performance of these technologies is significantly affected by the properties of the treated water, the efficiency of generating OH radicals, and the reaction efficiency between generated OH radicals and pollutants.

However, in the prior art, the interaction between ultraviolet rays and ozone and/or hydrogen peroxide was not efficiently performed in the reaction tank for AOP, so the overall AOP reaction efficiency, including the generation of OH radicals and the oxidation reaction with organic substances in polluted water through it, There was a problem with the decline.

In addition, in the case of the conventional AOP process using ultraviolet rays, as contaminants adhere to the ultraviolet irradiator as the ultraviolet irradiation is continuously performed, the ultraviolet transmittance of the ultraviolet irradiator decreases, and as a result, the AOP process such as the removal of recalcitrant organic substances There was a problem of reducing the removal efficiency of.

Furthermore, since the conventional AOP process needs to continuously supply ozone, there is a problem in that a lot of cost is required to treat wastewater.

Republic of Korea Patent Registration No. 10-2054625 Republic of Korea Patent Registration No. 10-0541573

Therefore, the present invention has been made to solve the above problems, and efficiently treats high-concentration organic wastewater by improving the interaction efficiency of ozone or ozone water and ultraviolet rays used in the treatment of recalcitrant organic substances contained in high-concentration organic wastewater. It is an object of the present invention to provide a high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays that can be treated with

Another object of the present invention is to provide a high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays that can efficiently treat high-concentration organic wastewater without continuously supplying ozone through ozone circulation.

However, the technical problem to be achieved in the present invention is not limited to the above-mentioned technical problems, and other technical problems not mentioned will become clear to those skilled in the art from the description below. You will be able to understand.

As a technical means for achieving the above object, a high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays according to an embodiment of the present invention includes air for pretreatment of the organic wastewater stored in the reaction chamber an ozone generator that generates ozone; After being discharged from the ozone generator, ozone at or below the predetermined ozone flow rate that is moved along the inlet path and introduced into the inside, the first fluid, which is pretreated water that is pretreated by ozone water in the reaction chamber and includes air and ozone, and ozone an ozonated water generator for generating ozone water composed of ozone microbubbles using a second fluid in which air is dissolved; a pump that sucks the first fluid and the second fluid and introduces them into the ozonated water generator; an injector for injecting the ozone water discharged from the ozone water generator into the reaction chamber; an ultraviolet irradiator comprising an ultraviolet lamp for irradiating ultraviolet rays into the reaction chamber and a quartz tube for enclosing the ultraviolet rays to transmit the ultraviolet rays; The contaminants adhered to the quartz tube are cleaned while the ozone water flowing into the reaction chamber is rotated in the direction of the whirl flow, and the ozone or ozone water moving along the bypass path partitioned from the inflow path is discharged into the reaction chamber. A radical shaft that sprays and generates OH radicals by the interaction between ultraviolet rays and ozone or ozone water; and a blade for rotating the radical shaft in the direction of the swirling flow of the ozone water flowing into the reaction chamber.

In addition, the radical shaft may include a shaft body that surrounds the quartz tube in a screw shape and is rotated in a direction by a swirling flow of ozone water introduced into the reaction chamber by the blade coupled to a part; a supply pipe connected to the shaft body so that the shaft body rotates in a direction caused by the swirling flow of the ozone water flowing into the reaction chamber, and supplying ozone or ozone water moving along the bypass path to the shaft body; a plurality of cleaning brushes coupled to one surface of the shaft body adjacent to the quartz tube, and cleaning the contaminants by applying pressure to the contaminants attached to the quartz tube while the shaft body rotates; and a plurality of injection holes formed on one surface of the shaft body, through which ozone or ozone water supplied to the shaft body through the supply pipe is discharged into the reaction chamber.

And, the blade is coupled to a part of the radical shaft and rotates the radical shaft in a direction caused by the swirling flow of ozone water flowing into the reaction chamber by receiving pressure from the swirling flow of ozone water flowing into the reaction chamber. main body; and a plurality of pressure distributing holes formed in the blade main body to allow the ozone water flowing into the reaction chamber to pass through the blade main body so as to disperse the pressure caused by the swirling flow of the ozonated water flowing into the reaction chamber applied to the blade main body. ; can be included.

In addition, the blade body may be made of a material that reflects ultraviolet rays transmitted through the quartz tube, and diffusely reflect the ultraviolet rays in the reaction chamber.

And the OH radical is generated in the reaction chamber by the interaction of ultraviolet light transmitted from the quartz tube and/or ultraviolet light diffusely reflected from the blade body, and ozone or ozone water discharged from the radical shaft, thereby reducing the organic wastewater Degradable organic matter can be removed.

In addition, the ozonated water generator may include an inner body disposed inside the outer body, having a conical funnel shape, and having a discharge portion provided at one side for discharging ozone water; a first inlet for introducing ozone for generating the ozonated water into the inner body; a second inlet for introducing the first fluid for generating the ozonated water into the inner body; a third inlet for introducing the second fluid for generating the ozonated water into the inner body; and a first collision plate configured to generate ozone microbubbles in the ozone water through collision with the ozone water discharged from the discharge unit.

The ozone water generator is provided on a fluid inflow path formed by combining one side of the second inlet and the third inlet, and collides with the first fluid and/or the second fluid to generate the ozone water. It may further include a second collision plate for generating ozone microbubbles in the first fluid and/or the second fluid.

In addition, in the ozone water generator, ozone generated from the ozone generator flows into the inner body along the first inlet, and the first fluid from the reaction chamber flows along the second inlet at a predetermined fluid flow rate or more. When flowing into the main body, ozone water may be generated by mixing the ozone and the first fluid.

And the ozonated water generator, the ozone generated from the ozone generator flows into the inner body along the first inlet, the first fluid from the reaction chamber along the second inlet less than a predetermined flow rate of the inner body When the second fluid flows into the inner body along the third inlet, ozone water may be generated by mixing the ozone, the first fluid, and the second fluid.

In addition, in the ozone water generator, the ozone generated from the ozone generator flows into the inner body along the first inlet, but when the first fluid is not generated in the reaction chamber, the second fluid having a predetermined flow rate or more Ozone water may be generated by mixing the ozone and the second fluid by flowing into the inner body along the third inlet.

And the ozone water generator, when ozone is not generated from the ozone generator or does not flow into the inner body along the first inlet, the first and second fluids having a predetermined flow rate or more flow along the second and third inlets. Ozonated water may be generated by mixing the first and second fluids by flowing into the inner body.

In addition, the ozone water generator may include at least one opening/closing valve for opening or closing the first, second, and third inlets, respectively, in the first, second, and third inlets.

The second fluid may be a fluid containing ozone without being mixed with the first fluid.

In addition, the organic wastewater may be generated by mixing the first organic wastewater and the second organic wastewater flowing into the reaction chamber along different inflow paths.

And the pretreatment system, a first ozone flow meter for measuring the flow rate of the ozone moved along the inflow path after being discharged from the ozone generator; a first ozone monitor outputting the flow rate of ozone measured by the first ozone flow meter; a second ozone flow meter for measuring the flow rate of exhausted ozone discharged from the reaction chamber and moving along the discharge path; a second ozone monitor outputting the flow rate of exhausted ozone measured by the second ozone flow meter; an ozone decomposer that decomposes ozone moving along the bypass path or waste ozone moving along the discharge path; and a fluid flow meter measuring flow rates of the first and second fluids introduced into the ozonated water generator by the pump.

According to the present invention, it is possible to treat wastewater by maximizing the efficiency of the advanced ultraviolet oxidation treatment process through interaction of ultraviolet rays with ozone or ozone water, irregular reflection of ultraviolet rays, and cleaning of an ultraviolet irradiator.

In addition, according to the present invention, by circulating ozone used to treat recalcitrant organic substances contained in high-concentration organic wastewater, it is possible to treat wastewater without continuously supplying ozone, thereby reducing wastewater treatment costs. .

However, the effects obtainable in the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below. You will be able to.

1 is a schematic conceptual diagram of a high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays according to an embodiment of the present invention.
2 is a schematic cross-sectional view of an ozone water generator according to an embodiment of the present invention.
3 is a schematic front view of a second collision plate according to an embodiment of the present invention.
4 is a schematic first use state diagram of the ozone water generator shown in FIG. 2;
FIG. 5 is a schematic second use state diagram of the ozone water generator shown in FIG. 2 .
FIG. 6 is a schematic diagram showing a third use state of the ozone water generator shown in FIG. 2 .
7 is a schematic fourth use state diagram of the ozone water generator shown in FIG. 2;
8 is a schematic perspective view of a radical shaft and a blade according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily carry out the present invention. However, since the description of the present invention is only an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiments described in the text. That is, since the embodiment can be changed in various ways and can have various forms, it should be understood that the scope of the present invention includes equivalents capable of realizing the technical idea. In addition, since the object or effect presented in the present invention does not mean that a specific embodiment should include all of them or only such effects, the scope of the present invention should not be construed as being limited thereto.

The meaning of terms described in the present invention should be understood as follows.

Terms such as "first" and "second" are used to distinguish one component from another, and the scope of rights should not be limited by these terms. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element. It should be understood that when an element is referred to as “connected” to another element, it may be directly connected to the other element, but other elements may exist in the middle. On the other hand, when an element is referred to as being “directly connected” to another element, it should be understood that no intervening elements exist. Meanwhile, other expressions describing the relationship between components, such as “between” and “immediately between” or “adjacent to” and “directly adjacent to” should be interpreted similarly.

Singular expressions should be understood to include plural expressions unless the context clearly dictates otherwise, and terms such as “comprise” or “having” refer to a described feature, number, step, operation, component, part, or It should be understood that it is intended to indicate that a combination exists, and does not preclude the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless defined otherwise. Terms defined in commonly used dictionaries should be interpreted as consistent with meanings in the context of related art, and cannot be interpreted as having ideal or excessively formal meanings unless explicitly defined in the present invention.

Hereinafter, a high-concentration organic wastewater pretreatment system 1 (hereinafter, 'pretreatment system 1') using ozone microbubbles and ultraviolet rays of a preferred embodiment will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the pretreatment system 1 includes a reaction chamber 10, an ozone generator 20, a first ozone flowmeter 30, a first Ozone monitor 40, control valve unit 50, second ozone flowmeter 60, second ozone monitor 70, ozone decomposer 80, ozone water generator 90, pump 100, fluid flowmeter 110 ), an injector 120, an ultraviolet irradiator 130, a radical shaft 140, and a blade 150.

The reaction chamber 10 includes a first wastewater inlet pipe 11, a second wastewater inlet pipe 12, and a pretreated water discharge pipe 13 to discharge pretreated water generated by the pretreatment process while storing high concentration organic wastewater. provide

In addition, the reaction chamber 10 is mixed with the first and second organic wastewater introduced along different wastewater inflow paths through the first and second wastewater inlet pipes 11 and 12, so that the first and second wastewater can store high-concentration organic wastewater mixed with

Further, the reaction chamber 10 may be provided in a form capable of inducing a swirling flow so that the radical shaft 140 and the blade 150 are rotated in one direction by the swirling flow of the ozone water flowing into the inside.

The first wastewater inlet pipe 11 passes through the lower surface of the reaction chamber 10 to allow the first organic wastewater to flow into the reaction chamber 10, and a first valve 14 for controlling the inflow of the first wastewater. ) and a pump for the inflow of the first wastewater may be installed.

Here, the first wastewater is organic wastewater different from the second wastewater, and contains recalcitrant organic substances to be treated by ozone microbubbles. For example, at least one of food effluent, food factory wastewater, sewage sludge, livestock manure, and human manure can

In addition, the first valve 14 may open or close the first wastewater inlet pipe 11 to control the inflow of the first wastewater.

As a specific example, the first valve 14 may close the first wastewater inlet pipe 11 while pretreatment of the organic wastewater is performed in the reaction chamber 10. In contrast, the pretreatment of the organic wastewater in the reaction chamber 10 It is possible to open the first wastewater inlet pipe 11 while not being made.

The second wastewater inlet pipe 12 passes through the side surface of the reaction chamber 10 to allow the second organic wastewater to flow into the reaction chamber 10, and a second valve 15 for controlling the inflow of the second wastewater. ) and a pump for the inflow of the second wastewater may be installed.

Here, the second wastewater is organic wastewater different from the first wastewater, and contains recalcitrant organic substances to be treated by ozone microbubbles. can

In addition, the second valve 15 may control the inflow of the second wastewater by opening or closing the second wastewater inlet pipe 12 .

As a specific example, the second valve 15 may close the second wastewater inlet pipe 12 while pretreatment of the organic wastewater is performed in the reaction chamber 10. In contrast, the pretreatment of the organic wastewater in the reaction chamber 10 It is possible to open the second wastewater inlet pipe 12 while not being made.

The pre-treated water discharge pipe 13 passes through the upper surface of the reaction chamber 10 and discharges the pre-treated water generated in the reaction chamber 10 when the organic wastewater is pre-treated by the ozone water composed of ozone microbubbles to the outside. A third valve 16 for controlling the discharge of the pre-treated water and a pump for discharging the pre-treated water may be installed.

Here, the outside where the pre-treated water is discharged may mean a post-treatment system that processes the pre-treated water discharged from the pre-treated system 1 .

The third valve 16 may open or close the pre-treated water discharge pipe 13 to control the discharge of the pre-treated water.

As a specific example, the third valve 16 may open the pre-treated water discharge pipe 13 when the pre-treatment of the organic waste water in the reaction chamber 10 is completed. During the pre-treatment discharge pipe 13 can be closed.

The ozone generator 20 generates ozone (O ₃ ) for pre-treatment of high-concentration organic wastewater stored in the reaction chamber 10 .

In addition, the ozone generator 20 may discharge ozone to the inflow path 2 according to predetermined discharge conditions after generating ozone.

Here, the predetermined emission conditions of the ozone generator 20 may be within 30 g/L (concentration), within 170 g/m ³ (density), and within 3 LPM (volume).

The ozone generator 20 generates ozone containing air so that ozone microbubbles are generated in the ozone water generator 90.

The first ozone flow meter 30 is installed on the inflow path 2 and measures the flow rate of ozone that is discharged from the ozone generator 20 and moves along the inflow path 2 .

The first ozone flowmeter 30 may be formed of an ozone flowmeter using ultraviolet absorption spectroscopy that measures a change in ultraviolet absorption in the vicinity of a wavelength of 254 nm to measure the flow rate of ozone containing air.

However, the first ozone flowmeter 30 is not limited to an ozone flowmeter based on ultraviolet absorption spectroscopy, and may be formed of an ozone flowmeter of another method capable of measuring ozone flow rate (eg, chemiluminescence method, etc.).

The first ozone monitor 40 outputs the flow rate of ozone measured by the first ozone flow meter 30 whenever the flow rate of ozone is measured from the first ozone flow meter 30 so that the user of the pretreatment system 1 can The ozone flow rate measured by the ozone flow meter 30 can be monitored.

The first ozone monitor 40 may be a display of a microcomputer, a terminal, a computer, etc. in which a control unit for controlling the entire operation of the preprocessing system 1 is configured (or built-in).

Accordingly, the first ozone monitor 40 may output not only the flow rate of ozone measured by the first ozone flow meter 30 but also information for controlling the entire operation of the pretreatment system 1 . Through this, the user of the pretreatment system 1 can control the pretreatment system 1 using the first ozone monitor 40 .

The control valve unit 50 is installed in the first, second, and third bypass paths 3, 4, and 5 partitioned in different areas from the inlet path 2, respectively, and is operated by the control unit of the pretreatment system 1. It consists of first, second, third control valves (51, 52, 53).

The first control valve 51 is installed at the connection point between the inflow path 2 and the first bypass path 3, and opens or closes the inflow path 2 and the first bypass path 3 so that the inflow path ( 2) to control the movement of ozone moving along.

As a specific example, when the flow rate of ozone measured by the first ozone flow meter 30 is less than or equal to the preset ozone flow rate, the first control valve 51 opens the inflow path 2 and opens the first bypass path 3. It can be closed to control the movement of ozone to the ozonated water generator 90 along the inflow path 2. In contrast, when the flow rate of ozone measured from the first ozone flow meter 30 exceeds the preset ozone flow rate, measurement The ozone decomposer (80) opens the first bypass path (3) while closing the inflow path (2) until the flow rate of ozone becomes less than or equal to the predetermined ozone flow rate, so that the ozone flows along the first bypass path (3). can be controlled to move to .

Here, the preset ozone flow rate may be 200 gm ³ .

In addition, the first control valve 51 may be formed of a 3-way valve capable of controlling the movement of ozone.

The second control valve 52 is installed in the second bypass path 4 and opens or closes the second bypass path 4 to control the movement of ozone.

As a specific example, the second control valve 52 opens the second bypass path 4 so that some of the ozone moving to the ozone water generator 90 along the inlet path 2 is transferred to the second bypass path 4. ), it can be controlled to move to the radical shaft 140.

The third control valve 53 is installed in the third bypass path 5 and opens or closes the third bypass path 5 to control the movement of ozone water.

As a specific example, the third control valve 53 opens the third bypass path 5 so that some ozone water among the ozone water moved to the reaction chamber 10 along the inflow path 2 passes through the third bypass path 5 ), it can be controlled to move to the radical shaft 140.

As such, the second and third control valves 52 and 53 may be configured as 2-way valves capable of controlling the movement of ozone or ozone water.

The second ozone flowmeter 60 is used for pretreatment of organic wastewater stored in the reaction chamber 10 or not used for pretreatment of organic wastewater, and is discharged from the reaction chamber 10 and moved along the discharge path 6. Measure the flow rate of ozone.

The second ozone flow meter 60 may be configured as an ozone flow meter using ultraviolet absorption spectroscopy to measure the flow rate of exhausted ozone. However, the second ozone flowmeter 60 is not limited to an ozone flowmeter based on ultraviolet absorption spectroscopy, and may be formed of an ozone flowmeter of another method capable of measuring ozone flow rate (eg, chemiluminescence method, etc.).

The second ozone monitor 70 outputs the flow rate of exhaust ozone measured by the second ozone flow meter 60 whenever the flow rate of exhaust ozone is measured by the second ozone flow meter 60 so that the user of the pretreatment system 1 can The flow rate of the exhausted ozone measured by the second ozone flow meter 60 can be monitored.

The second ozone monitor 70 may be a display of a microcomputer, a terminal, a computer, etc. in which a control unit for controlling the entire operation of the preprocessing system 1 is configured (or built-in).

Accordingly, the second ozone monitor 70 may output information for controlling the entire operation of the pretreatment system 1 as well as the flow rate of exhausted ozone measured by the second ozone flow meter 30 .

However, when the first ozone monitor 40 outputs information for controlling the entire operation of the preprocessing system 1, the output of information for controlling the preprocessing system 1 is omitted from the second ozone monitor 70. And, it can be used for the purpose of outputting the flow rate of exhausted ozone measured by the second ozone flow meter (60).

Furthermore, when the flow rate of residual ozone measured by the second ozone flow meter 60 is less than or equal to the preset residual ozone flow rate, residual ozone moving along the discharge path 6 can be discharged to an external residual ozone treatment facility, In contrast, when the flow rate of residual ozone measured by the second ozone flow meter 60 exceeds the predetermined flow rate of residual ozone, the residual ozone moving along the discharge path 6 may be moved to the ozone decomposer 80. .

Here, the predetermined flow rate of exhaust ozone may be 100 gm ³ .

The ozone decomposer 80 decomposes ozone moving along the first bypass path 3 or waste ozone moving along the discharge path 6 .

In addition, the ozone decomposer 80 is provided with a catalyst (activated carbon) for decomposing ozone or waste ozone and converting it into oxygen (O ₂ ), a heating wire for applying heat to the catalyst, and a temperature controller for controlling the temperature of the heating wire. can

As such, the ozone decomposer 80 may discharge oxygen (O ₂ ) converted through the decomposition of ozone or residual ozone to the outside, where the outside may be one of atmospheric or residual ozone treatment facilities.

Referring to FIG. 2, the ozone water generator 90 includes an outer body 91, an inner body 92, a first inlet 93, a second inlet 94, and a first inlet to generate ozone water made of ozone microbubbles. 3 Inlets 95, a first impact plate 97 and a second impact plate 98 are provided.

Here, the ozone water containing ozone microbubbles may also contain hydroxyl radicals for the treatment of non-decomposable organic substances.

The outer body 91 has a tubular shape, and an inner body 92 is disposed therein.

The inner body 92 is disposed inside the outer body 91, has a conical funnel shape with an empty inside through an inclined surface 92a on one side, and ozone water containing ozone microbubbles generated inside is injected into an injector ( 120) may be provided on one side of the discharge unit 92b for discharging.

The first inlet 93 penetrates the side surfaces of the outer body 91 and the inner body 92 to introduce ozone to be used for generating ozonated water into the inner body 92 . Here, the ozone is equal to or less than a preset ozone flow rate moving along the inflow path 2, and may include air.

In addition, a first opening/closing valve for controlling the inflow of ozone may be installed in the first inlet 93, and the first opening/closing valve is remotely controlled by the control unit of the pretreatment system 1 so that the first inlet ( 93) can be open or closed.

The second inlet 94 introduces a first fluid to be used for generating ozonated water into the inner body 92 . Here, the first fluid is pretreated water discharged from the reaction chamber 10 through a discharge path different from the pretreated water discharge pipe 13, and may contain OH radicals.

In addition, a second on-off valve for controlling the inflow of the first fluid may be installed in the second inlet 94, and the second on-off valve is remotely controlled by the control unit of the pretreatment system 1 to control the inflow of the second fluid. Section 94 can be open or closed.

The third inlet 95 introduces a second fluid to be used for generating ozonated water into the inner body 92 . Here, the second fluid is discharged from a separate storage chamber, and may contain ozone and dissolved air without being mixed with the first fluid.

In addition, a third on-off valve for controlling the inflow of the second fluid may be installed in the third inlet 95, and the third on-off valve is remotely controlled by the control unit of the pretreatment system 1 to control the inflow of the second fluid. Part 95 can be open or closed.

As such, the second and third inlets 94 and 95 are formed as one side is joined to the other, and the fluid inflow path 96 penetrates the upper surface of the outer body 91 and the inner body 92, The first and second fluids may be introduced into the main body 92 .

The first collision plate 97 generates ozone microbubbles in the ozone water through collision with the ozone water discharged from the discharge unit 92b.

Here, the ozone water in which the ozone microbubbles are generated may be moved to the injector 120 connected to the ozone water generator 90 .

In addition, the first collision plate 97 can generate ozone microbubbles in the ozone water because the ozone, the first fluid, and the second fluid that can flow into the inner body 92 include air and ozone, respectively.

The second collision plate 98 is provided on the fluid inlet path 96 and is provided with a first fluid moving along the second inlet 94 and/or a second fluid moving along the third inlet 95 and Ozone microbubbles are generated in the first fluid and/or the second fluid through the collision of.

As shown in FIG. 3, the second collision plate 98 is a fluid guide penetrating from one side to the other side so that the first fluid and/or the second fluid flows into the inner body 92 to generate ozone microbubbles. A plurality of spheres 98a are formed, and a collision member 98b coupled to the other surface is provided so that a collision with the first fluid and/or the second fluid passing through the fluid guide sphere 98a occurs.

In addition, since the second collision plate 98 contains ozone while air is dissolved in the first and second fluids introduced through the second and third inlets 94 and 95, the first fluid and/or the second fluid Ozone microbubbles can be generated in the fluid.

On the other hand, the ozone water generator 90 can generate ozone water containing microbubbles of ozone through the circulation of ozone without continuously supplying ozone to the inner body 92, and the ozone water generation process is variously as follows. It can be done.

Referring to FIG. 4, ozone generated from the ozone generator 20 flows into the inner body 92 along the first inlet 92, and the first fluid from the reaction chamber 10 is pumped by the pump 100. When the fluid flows into the inner body 92 along the second inlet 94 at a predetermined flow rate or more, ozone water made of a mixture of ozone and the first fluid may be generated in the inner body 92 .

In the ozone water generation process shown in FIG. 4, the pretreatment process of the first and second wastewater is performed one or more times in the reaction chamber 10, and the flow rate of the ozone water to be generated is sufficient as the flow rate of the first fluid is greater than the predetermined fluid flow rate. can be done when

Referring to FIG. 5, ozone generated from the ozone generator 20 is introduced into the inner body 92 along the first inlet 92, and the first fluid from the reaction chamber 10 is supplied by the pump 100. When flowing into the inner body 92 along the second inlet 94 at a lower flow rate than the preset fluid flow rate, the ozonated water generator 90 adjusts the second fluid so that the flow rates of the first and second fluids exceed the preset fluid flow rate. By flowing into the inner body 92 along the third inlet 95, the inner body 92 may generate ozonated water composed of a mixture of ozone, the first fluid, and the second fluid.

In the ozone water generation process shown in FIG. 5, the first fluid is generated by performing the pretreatment process of the first and second wastewaters one or more times in the reaction chamber 10, and the first fluid is generated when the flow rate of the first fluid is less than the preset fluid flow rate. This can be done when the flow rate of ozonated water becomes insufficient.

Referring to FIG. 6, ozone generated from the ozone generator 20 flows into the inner body 92 along the first inlet 92, but the reaction chamber 10 does not pre-treat the organic wastewater, so that the first When the fluid is not generated, the ozone water generator 90 allows the second fluid equal to or higher than the predetermined fluid flow rate to flow into the inner body 92 along the third inlet 95, so that the inner body 92 removes ozone from the water. Ozonated water can be created by mixing the two fluids.

The ozone water generation process shown in FIG. 6 may be performed before the first and second wastewater pretreatment processes are performed in the reaction chamber 10, that is, before the first fluid is generated.

Referring to FIG. 7 , when ozone is not generated from the ozone generator 20 or ozone does not flow into the inner body 92 along the first inlet 1, the ozonated water generator 90 operates at a flow rate equal to or higher than the preset fluid flow rate. By allowing the first and second fluids to flow into the inner body 92 along the second and third inlets 94 and 95, ozone water made of a mixture of the first and second fluids can be generated in the inner body 92. .

The process of generating ozone water shown in FIG. 7 may be performed when ozone generation in the ozone generator 20 is temporarily stopped and ozone needs to be introduced to generate ozone water.

Referring back to FIG. 1 , the pump 100 is installed in the second inlet 94 and sucks the first fluid generated in the reaction chamber 10 so that the first fluid flows along the second inlet 94. It is introduced into the inner body 92.

The pump 100 is also installed in the third inlet 95 to suck in the second fluid stored in a separate storage chamber so that the second fluid flows into the inner body 92 along the third inlet 95. It is desirable to do

The fluid flow meter 110 is installed in the second inlet 94 and measures the flow rate of the first fluid moved along the second inlet 94 by the pump 100 .

Preferably, the fluid flow meter 110 is also installed in the third inlet 95 to measure the flow rate of the second fluid moved along the third inlet 95 by the pump 100 .

Meanwhile, the pretreatment system 1 may control the operation of the pump 100 through the flow rates of the first and second fluids measured by the fluid flow meter 110 .

As a specific example, the pretreatment system 1 may introduce the first fluid into the inner body 92 by the pump 100 when the flow rate of the first fluid measured by the fluid flow meter 110 is greater than or equal to a preset fluid flow rate. In contrast, when the flow rate of the first fluid is less than the predetermined fluid flow rate, the first fluid as well as the second fluid is supplied to the inner body 92 by the pump 100 so that the flow rates of the first and second fluids are equal to or greater than the preset flow rate. ) can be introduced.

Here, the preset fluid flow rate is 10 to 30 LPM, and a preferred preset fluid flow rate may be 20 LPM. Accordingly, when the flow rate of the first fluid is 20 LPM or more, the flow rate of the second fluid may be omitted, whereas when the flow rate of the first fluid is less than 20 LPM, the flow rate of the second fluid may be performed.

In addition, the preprocessing system 1 outputs the flow rate of the first fluid and/or the second fluid measured by the fluid flow meter 110 and monitors the fluid so that the user can monitor the flow rate of the first fluid and/or the second fluid. can be provided.

Referring back to FIG. 1 , the injector 120 may inject the ozone water in which micro-bubbles of ozone are discharged from the ozone water generator 90 into the reaction chamber 10 .

The injector 120 directly injects the ozone water in which ozone microbubbles are generated into the reaction chamber 10 or injects it into the inflow path 2 connecting the injector 120 and the reaction chamber 120 to form the reaction chamber 10. The organic wastewater within is pre-treated.

Here, the ozone water injected from the injector 120 is not only injected into the reaction chamber 10 or the inflow path 2, but also the radical shaft 140 along the third bypass path 53 partitioned from the inflow path 2. ) can be moved.

The ultraviolet irradiator 130 includes an ultraviolet lamp 131, a quartz tube 132, a socket 133, and a cable 134 so that an advanced ultraviolet oxidation process (AOP) occurs in the reaction chamber 10. ) is made up of

The ultraviolet lamp 131 irradiates into the reaction chamber 10 ultraviolet rays (UV) that will interact with ozone or ozone water discharged from the radical shaft 140 into the reaction chamber 10 .

The quartz tube 132 surrounds and protects the UV lamp 131 and is made of a quartz material for transmitting (refracting) UV rays irradiated from the UV lamp 131 into the reaction chamber 10 .

Here, the transmission of the quartz tube 132 may be diffusion transmission to allow the ultraviolet light irradiated from the ultraviolet lamp 131 to diffuse to the entire area within the reaction chamber 10, and according to the diffuse transmission of the ultraviolet light, the reaction chamber 10 As the interaction efficiency between ultraviolet rays and ozone or ozonated water is improved to maximize the generation of OH radicals in the reaction chamber 10, it is possible to easily remove the non-decomposable organic substances.

The socket 133 is an inlet for supplying electricity to the ultraviolet lamp 131, and is combined with the end of the ultraviolet lamp 131 and the end of the quartz tube 132 to provide first and second wastewater flowing into the reaction chamber 10. Supports the ultraviolet lamp 131 and the quartz tube 132 from.

The cable 134 penetrates one side of the socket 133 and is connected to the UV lamp 131 to form an electricity supply circuit, thereby supplying electricity to the UV lamp 131 so that the UV lamp 131 emits ultraviolet rays. do.

The radical shaft 140 cleans the contaminants attached to the quartz tube 22 while being rotated in the direction of the swirling flow of the ozone water flowing into the reaction chamber 10 along the introduction path 2, and the second bypass Ozone flowing along the path 4 or ozone water flowing along the third bypass path 5 is sprayed to the area adjacent to the quartz tube 22 so that the interaction between ultraviolet rays and ozone or ozone water occurs primarily , OH radicals can be generated by causing a secondary interaction between the diffused ultraviolet rays and ozone or ozone water after being emitted.

The radical shaft 140 includes a shaft body 141, a supply pipe 142, a cleaning brush 143, and a spray hole 144.

The shaft body 141 surrounds the quartz tube 132 in a screw shape, receives pressure from the swirling flow of ozone water, and rotates in the direction of the swirling flow of ozone water.

In addition, a plurality of cleaning brushes 143 and spray holes 144 may be disposed on one surface of the shaft body 141 .

Here, one surface of the shaft body 141 means a surface of the shaft body 141 adjacent to the quartz tube 132 .

The supply pipe 142 has a bearing structure, is rotatably coupled to the reaction chamber 10, and is connected to the shaft body 141 so as to rotate the shaft body 141 in the direction of the swirling flow of the ozone water.

In addition, the supply pipe 142 may rotate the shaft body 141 in the direction of the swirling flow of the ozone water through remote control such as PCB control or PLC control.

In addition, the supply pipe 142 transfers ozone flowing into the inside after moving along the second bypass path 4 or ozone water flowing into the inside after moving along the third bypass path 5 to the shaft body 141. supply

A plurality of cleaning brushes 143 are coupled to one surface of the shaft body 141, and while the shaft body 141 is pivoted in the direction by the swirling flow of ozone water, pressure is applied to the contaminants attached to the quartz tube 132 to Contaminants adhering to the quartz tube 132 are cleaned.

In addition, the cleaning brush 143 is a hydrophobic material (eg, methallyltrimethylsilane, allyltrimethylsilane, vinyltrimethylsilane, etc.) or an elastomeric material (eg, styrene-based, PVC-based, polyamide-based, poly esters, etc.) and the like.

In addition, the cleaning brush 143 is attached to the quartz tube 132 through cleaning of the quartz tube 132 and is capable of removing non-decomposable organic substances remaining in the reaction chamber 10, through which the UV irradiator 130 By delaying the replacement period, the cost of the advanced UV oxidation treatment process can be reduced.

A plurality of injection holes 144 are formed on one surface of the shaft body 141, and while ozone or ozone water is supplied to the shaft body 141, ozone or ozone water is injected into the quartz tube 132 and the reaction chamber 10. spread

Also, since the shaft body 141 of the spray hole 144 is pivoted in a direction corresponding to the swirling flow of ozone water, the discharge direction of ozone or ozone water can be changed.

Accordingly, the spray hole 144 can discharge ozone or ozone water in various discharge directions.

Furthermore, a plurality of injection holes 144 are formed on one side of the shaft body 141 adjacent to the quartz tube 132 because ozone or ozonated water is exposed to the ultraviolet irradiator 130 by the first and second wastewater having low ultraviolet transmittance. This is because when sprayed into the reaction chamber 10 at a distance, interaction efficiency between ultraviolet rays and ozone or ozone water is reduced due to the influence of the first and second wastewater.

The blade 150 rotates the radical shaft 140 in a direction corresponding to the swirling flow of the ozone water by receiving pressure from the swirling flow of the ozone water flowing into the reaction chamber 10 .

In addition, the blade 150 may change the direction in which ozone or ozone water is sprayed by the radical shaft 140 by rotating the radical shaft 140 in a direction corresponding to the swirling flow of the ozone water.

This blade 150 is composed of a blade body 151 and a pressure distribution hole 152.

The blade body 151 is coupled to a part of the shaft body 141, and rotates the shaft body 141 in the direction of the swirling flow of ozone water by receiving pressure from the swirling flow of ozone water.

In addition, it is preferable that the blade body 151 extends to a length that does not collide with the inner wall of the reaction chamber 10 based on when it is coupled to the shaft body 141 in order to be rotated in the direction of the swirling flow of ozone water. .

And, the blade body 151 is made of a material that reflects ultraviolet light diffusely transmitted from the quartz tube 9132 into the reaction chamber 10 .

Through this, while the blade body 151 receives pressure from the swirling flow of ozone water and rotates in the direction of the swirling flow of ozone water, it can diffusely reflect ultraviolet rays transmitted into the reaction chamber 10 by the quartz tube 132. .

Due to the diffuse reflection of the ultraviolet rays, the interaction efficiency between the ultraviolet rays and ozone or ozonated water is improved in the reaction chamber 10, and the generation of OH radicals is maximized, so that the difficult to decompose organic substances can be easily removed.

Furthermore, in the reaction chamber 10, the ultraviolet light diffusely transmitted through the quartz tube 132 and/or the ultraviolet light diffusely reflected from the blade body 151 and the ozone or ozone water sprayed from the injection hole 144 interact with each other. It is preferable that the hardly decomposable organic substances are removed by the generated OH radicals.

A plurality of pressure distribution holes 152 are formed in the blade body 151 to allow the ozone water flowing into the reaction chamber 10 to pass through the blade body 151 to disperse the pressure applied to the blade body 151 .

Through the pressure distributing hole 152, the blade body 151 may be less likely to be damaged from the pressure caused by the swirling flow of ozone water, thereby prolonging its lifespan.

Detailed descriptions of the preferred embodiments of the present invention disclosed as described above are provided to enable those skilled in the art to implement and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art will understand that the present invention can be variously modified and changed without departing from the scope of the present invention. For example, those skilled in the art can use each configuration described in the above-described embodiments in a manner of combining with each other. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention. Accordingly, the above detailed description should not be construed as limiting in all respects and should be considered as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit citation relationship in the claims may be combined to form an embodiment or may be included as new claims by amendment after filing.

1: high-concentration organic wastewater pretreatment system, 2: inflow path,
3: first bypass path, 4: second bypass path,
5: third bypass path, 6: discharge path,
10: reaction chamber, 11: first wastewater inlet pipe,
12: second wastewater inlet pipe, 13: pretreated water discharge pipe,
14: first valve, 15: second valve,
16: third valve, 20: ozone generator,
30: first ozone flow meter, 40: first ozone monitor,
50: control valve unit, 51: first control valve,
52: second control valve, 53: third control valve,
60: second ozone flow meter, 70: second ozone monitor,
80: ozone decomposer, 90: ozonated water generator,
91: outer body, 92: inner body,
92a: slope, 92b: discharge unit,
93: first inlet, 94: second inlet,
95: third inlet, 96: fluid inlet path,
97: first impact plate, 98: second impact plate,
98a: fluid guide, 98b: collision member,
100: pump, 110: fluid flow meter,
120: injector, 130: ultraviolet irradiator,
131: ultraviolet lamp, 132: quartz tube,
133: socket, 134: cable,
140: radical shaft, 141: shaft body,
142: supply pipe, 143: cleaning brush,
144: injection hole, 150: blade,
151: blade body, 152: pressure distribution hole.

Claims (15)

In the pretreatment system for pretreatment of high concentration organic wastewater,
an ozone generator generating air-containing ozone for pre-treating the organic wastewater stored in the reaction chamber;
After being discharged from the ozone generator, ozone at or below the predetermined ozone flow rate that is moved along the inlet path and introduced into the inside, the first fluid, which is pretreated water that is pretreated by ozone water in the reaction chamber and includes air and ozone, and ozone an ozonated water generator for generating ozone water composed of ozone microbubbles using a second fluid in which air is dissolved;
a pump that sucks the first fluid and the second fluid and introduces them into the ozonated water generator;
an injector for injecting the ozone water discharged from the ozone water generator into the reaction chamber;
an ultraviolet irradiator comprising an ultraviolet lamp for irradiating ultraviolet rays into the reaction chamber and a quartz tube for enclosing the ultraviolet rays to transmit the ultraviolet rays;
The contaminants adhered to the quartz tube are cleaned while the ozone water flowing into the reaction chamber is rotated in the direction of the whirl flow, and the ozone or ozone water moving along the bypass path partitioned from the inflow path is discharged into the reaction chamber. A radical shaft that sprays and generates OH radicals by the interaction between ultraviolet rays and ozone or ozone water; and
A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that it includes a blade for rotating the radical shaft in a direction caused by the swirling flow of the ozone water flowing into the reaction chamber. According to claim 1,
The radical shaft,
a shaft body that surrounds the quartz tube in a screw shape and is rotated in a direction by the swirling flow of the ozone water flowing into the reaction chamber by the blade coupled to a part thereof;
a supply pipe connected to the shaft body so that the shaft body rotates in a direction caused by the swirling flow of the ozone water flowing into the reaction chamber, and supplying ozone or ozone water moving along the bypass path to the shaft body;
a plurality of cleaning brushes coupled to one surface of the shaft body adjacent to the quartz tube, and cleaning the contaminants by applying pressure to the contaminants attached to the quartz tube while the shaft body rotates; and
A plurality of injection holes are formed on one surface of the shaft body and discharge the ozone or ozone water supplied to the shaft body through the supply pipe into the reaction chamber; Wastewater pre-treatment system. According to claim 1,
the blade,
a blade body coupled to a part of the radical shaft and receiving pressure from the swirling flow of ozone water flowing into the reaction chamber to rotate the radical shaft in a direction caused by the swirling flow of ozone water flowing into the reaction chamber; and
a plurality of pressure distributing holes formed in the blade main body to allow the ozone water flowing into the reaction chamber to pass through the blade main body and to disperse the pressure of the swirling flow of the ozonated water flowing into the reaction chamber applied to the blade main body; High-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that it comprises a. According to claim 3,
The blade body,
A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that it is made of a material that reflects ultraviolet rays transmitted from the quartz tube and diffusely reflects the ultraviolet rays in the reaction chamber. According to claim 4,
The OH radical,
It is generated in the reaction chamber by the interaction of ultraviolet rays transmitted from the quartz tube and / or ultraviolet rays diffusely reflected from the blade body and ozone or ozone water discharged from the radical shaft to remove recalcitrant organic substances of the organic wastewater A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that. According to claim 1,
The ozone water generator,
an inner body disposed inside the outer body, having a conical funnel shape, and having a discharge portion provided at one side for discharging ozone water;
a first inlet for introducing ozone for generating the ozonated water into the inner body;
a second inlet for introducing the first fluid for generating the ozonated water into the inner body;
a third inlet for introducing the second fluid for generating the ozonated water into the inner body; and
A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that it comprises a first collision plate for generating ozone microbubbles in the ozone water through collision with the ozone water discharged from the discharge unit. According to claim 6,
The ozone water generator,
It is provided on a fluid inflow path formed as one side of the second inlet and the third inlet is merged, and the first fluid and/or the second fluid collide with the first fluid and/or the second fluid. A pretreatment system for high-concentration organic wastewater using ozone microbubbles and ultraviolet rays, further comprising a second collision plate for generating ozone microbubbles in the second fluid. According to claim 6,
The ozone water generator,
When ozone generated from the ozone generator flows into the inner body along the first inlet, and the first fluid from the reaction chamber flows into the inner body along the second inlet at a predetermined flow rate or more, the A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that ozone water is generated by mixing ozone and a first fluid. According to claim 6,
The ozone water generator,
When the ozone generated from the ozone generator flows into the inner body along the first inlet, and the first fluid from the reaction chamber flows into the inner body along the second inlet at a flow rate less than a preset fluid flow rate, the A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that the ozone water is generated by mixing the ozone, the first fluid and the second fluid by allowing the second fluid to flow into the inner body along the third inlet . According to claim 6,
The ozone water generator,
Ozone generated from the ozone generator flows into the inner body along the first inlet, but when the first fluid is not generated in the reaction chamber, the second fluid equal to or greater than a predetermined flow rate flows along the third inlet. A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that the ozone water is generated by mixing the ozone and the second fluid by flowing into the inner body. According to claim 6,
The ozone water generator,
When ozone is not generated from the ozone generator or does not flow into the inner body along the first inlet, the first and second fluids at a predetermined flow rate or more flow into the inner body along the second and third inlets, A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that ozone water is generated by mixing the first and second fluids. According to claim 6,
The ozone water generator,
A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that at least one opening/closing valve for opening or closing the first, second, and third inlets is provided in the first, second, and third inlets, respectively. According to claim 1,
The second fluid,
A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that the fluid does not mix with the first fluid and contains ozone. According to claim 1,
The organic wastewater,
A high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that it is generated by mixing the organic first wastewater and the second wastewater flowing into the reaction chamber along different inflow paths. According to claim 1,
The pretreatment system,
a first ozone flow meter for measuring a flow rate of ozone moving along an inlet path after being discharged from the ozone generator;
a first ozone monitor outputting the flow rate of ozone measured by the first ozone flow meter;
a second ozone flow meter for measuring the flow rate of exhausted ozone discharged from the reaction chamber and moving along the discharge path;
a second ozone monitor outputting the flow rate of exhausted ozone measured by the second ozone flow meter;
an ozone decomposer that decomposes ozone moving along the bypass path or waste ozone moving along the discharge path; and
The high-concentration organic wastewater pretreatment system using ozone microbubbles and ultraviolet rays, characterized in that it further comprises;

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