KR102387646B1 - Bubble flotation sterilization system using ultraviolet and ozone microbubbles - Google Patents

Abstract

The present invention provides a bubble floatation sterilization system using ultraviolet and ozone micro-bubbles having excellent sterilization efficiency against virus included in discharge water of a sewage treatment plant using ultraviolet and ozone micro-bubbles in order to solve a demerit of a single sterilization system in an ultraviolet sterilization method. The bubble floatation sterilization system using ultraviolet and ozone micro-bubbles for sterilizing virus in discharge water leaked from a sewage treatment plant comprises: a reaction chamber to introduce the discharge water and to flow out treated water and backwash water from which the virus is sterilized; an ultraviolet illuminator installed in the reaction chamber to illuminate ultraviolet ray to discharge water introduced in the reaction chamber; a spray nozzle for spraying ozone micro-bubbles inside the reaction chamber to generate OH radical in the discharge water by mutual reaction of the ozone micro-bubbles with the ultra violet illuminated from the ultraviolet illuminator; an ozone micro-bubble supply part to supply the ozone micro-bubble to the spray nozzle; a diffuse reflection part provided a side and a lower inner surface of the reaction chamber to diffuse-reflect the ultraviolet ray illuminated from the ultraviolet illuminator; a backwash nozzle to spray the backwash water inside the reaction chamber; and a backwash supply part to supply the backwash to the backwash nozzle.

Description

Bubble flotation sterilization system using ultraviolet and ozone microbubbles

The present invention relates to a bubble-floating sterilization system using ultraviolet and ozone microbubbles. It relates to a floating bubble sterilization system using

In general, sterilization of wastewater includes chlorine sterilization, ultraviolet sterilization, and ozone sterilization.

The sterilization of wastewater relied mainly on chlorine. However, due to the interaction between chlorine and organic matter in the effluent, the generation of carcinogen THM (Trihalomethane) and residual chlorine are known to have adverse effects that destroy the ecosystem of downstream and rivers. Chlorine sterilization began to be excluded from the sterilization method of

Due to the disadvantages of the chlorine sterilization method, the ultraviolet sterilization device using the ultraviolet sterilization method, which is a sterilization method that replaces the chlorine sterilization method, sterilizes the microorganisms in the water passing through the ultraviolet irradiation area by immersing the lamp horizontally in the water passage. .

Ultraviolet sterilization has the advantage of being environmentally friendly, and by using ultraviolet rays with a wavelength of 253.7 mm, it inactivates microorganisms by destroying DNA of microorganisms. It has the advantage of excellent sterilization efficiency. However, a large number of UV lamps are required for sewage treatment or wastewater treatment with a very large amount of water to be treated. There is a disadvantage that the adhesion of contaminants to the surface is accelerated, and the sterilization efficiency of microorganisms by ultraviolet rays is rapidly reduced.

The ozone sterilization method uses the strong oxidizing power of ozone to sterilize microorganisms, and ozone inactivates microorganisms by easily destroying the cell walls of microorganisms with its unique strong oxidizing power. However, since ozone reacts ahead of microorganisms in the reaction with organic matter, a very high ozone injection rate must be maintained in sewage treatment plant or wastewater treatment plant effluent containing a large amount of organic matter. That is, although the sterilization power is excellent, there is a disadvantage of avoiding application in most treatment plants because high concentration injection and operation stability of the ozone generator are not secured.

Although the sterilization method of the wastewater has advantages and disadvantages, among them, the ultraviolet sterilization method is the most applied.

However, as described above, since the ultraviolet sterilization method has a disadvantage in that the sterilization efficiency of microorganisms is lowered, it is necessary to apply a sterilization method for wastewater that can compensate for this disadvantage.

Republic of Korea Patent Publication No. 10-2036332

Therefore, the present invention has been devised to solve the above problems, and in order to compensate for the disadvantages of the sterilization system using the ultraviolet sterilization method alone, it uses ultraviolet rays and ozone microbubbles to provide excellent sterilization of viruses present in the effluent of a sewage treatment plant. An object of the present invention is to provide a bubble-floating sterilization system using ultraviolet and ozone microbubbles with efficiency.

Another object of the present invention is to provide a bubble-floating sterilization system using ultraviolet and ozone microbubbles that can maintain sterilization efficiency in an optimal state by removing contaminants adhering to the ultraviolet irradiator during the treatment of effluent.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

As a technical means for achieving the above object, the bubble-floating sterilization system using ultraviolet and ozone microbubbles according to an embodiment of the present invention is a sterilization system for sterilizing viruses in effluent discharged from a sewage treatment plant. , a reaction chamber in which the inflow of the effluent, the virus-sterilized treated water and the backwashing water are discharged; an ultraviolet irradiator provided in the reaction chamber to irradiate ultraviolet rays to the effluent flowing into the reaction chamber; an injection nozzle for injecting ozone microbubbles into the reaction chamber so that OH radicals are generated in the effluent by interaction with the ultraviolet rays irradiated from the ultraviolet irradiator; an ozone microbubble supply unit for supplying the ozone microbubbles to the injection nozzle; a diffuse reflector provided on the side and lower inner surfaces of the reaction chamber to diffusely reflect the ultraviolet rays irradiated from the ultraviolet irradiator; a backwash nozzle for spraying the backwashing water into the reaction chamber; and a backwash water supply unit supplying the backwashing water to the backwashing nozzle.

In addition, the diffuse reflection unit may be a zigzag mirror having mountains and valleys so that the ultraviolet rays irradiated from the ultraviolet ray irradiator are diffusely reflected.

The backwash nozzle may be coupled to the upper portion of the reaction chamber, and may spray the backwashing water into the reaction chamber while it is extended while rotating in one direction or expanded and contracted while rotating in the other direction.

In addition, the injection nozzle is spaced apart from a quartz tube through which ultraviolet rays are transmitted in the ultraviolet irradiator, and is disposed to surround the quartz tube and sprays ozone microbubbles into the space spaced apart from the quartz tube to the spaced space. It is possible to preferentially generate OH radicals.

And the sterilization system is coupled to the upper part of the reaction chamber, and moves upward during rotation in one direction or moves downward during rotation in the other direction so that when the UV irradiator passes through the center, it is attached to the outside of the UV irradiator. It may further include; a cleaning unit for cleaning contaminants.

In addition, the cleaning unit may include a rotating shaft coupled to the upper portion of the reaction chamber and extending and contracting while rotating in the one direction or extending in the other direction; a rotating frame that moves upward while rotating in the one direction by the rotating shaft or downward while rotating in the other direction, and having a through hole formed in the center to allow the ultraviolet irradiator to pass therethrough; and a plurality of UV irradiators are provided on the inner surface of the through-holes so as to surround and contact the outside of the UV irradiator when the UV irradiator passes through the through-hole, and through the rotation of the rotating frame in the one direction or the other direction of the UV irradiator It may include; a cleaning brush for cleaning the contaminants attached to the outside.

In addition, the cleaning unit may clean the contaminants attached to the outside of the UV irradiator after the treatment of the effluent in the reaction chamber is completed and before the backwashing process.

In addition, the ozone microbubble supply unit generates ozone microbubbles using the fluid supplied through the first bypass pipe connected to the fluid supply unit before the treatment water is generated in the reaction chamber, and in the reaction chamber When the treated water is generated, ozone microbubbles may be generated using a portion of the treated water supplied through the second bypass pipe connected to the treated water outlet pipe for discharging the treated water from the reaction chamber.

According to the present invention, the sterilization efficiency of effluent from a sewage treatment plant can be improved by supplementing the disadvantages of the sterilization system using the ultraviolet sterilization method alone using ultraviolet rays and ozone microbubbles.

In addition, according to the present invention, it is possible to maintain the effluent sterilization efficiency in an optimal state by removing the contaminants attached to the ultraviolet irradiator.

However, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

1 is a schematic explanatory view of a bubble floating sterilization system using ultraviolet and ozone microbubbles according to an embodiment of the present invention.
FIG. 2 is a schematic explanatory view for explaining the ozone microbubble injection method of the injection nozzle shown in FIG. 1 .
FIG. 3 is a schematic explanatory view for explaining a method for cleaning contaminants of the cleaning unit shown in FIG. 1 .

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. However, since the description of the present invention is merely an embodiment for structural or functional description, the scope of the present invention should not be construed as being limited by the embodiment described in the text. That is, since the embodiment may have various changes and may 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, it should not be understood that the scope of the present invention is limited thereby.

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

Terms such as “first” and “second” are for distinguishing one component from another, and the scope of rights should not be limited by these terms. For example, a first component may be termed a second component, and similarly, a second component may also be termed a first component. When a component is referred to as being “connected to” another component, it may be directly connected to the other component, but it should be understood that other components may exist in between. On the other hand, when it is mentioned that a certain element is "directly connected" to another element, it should be understood that the other element does not exist in the middle. Meanwhile, other expressions describing the relationship between elements, that is, "between" and "between" or "neighboring to" and "directly adjacent to", etc., should be interpreted similarly.

The singular expression is to be understood to include the plural expression unless the context clearly dictates otherwise, and terms such as "comprise" or "have" are not intended to refer to the specified feature, number, step, action, component, part or any of them. It is intended to indicate that a combination exists, and it should be understood that it does not preclude the possibility of the existence or addition of one or more other features or 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 otherwise defined. Terms defined in the dictionary should be interpreted as being consistent with the meaning of the context of the related art, and cannot be interpreted as having an ideal or excessively formal meaning unless explicitly defined in the present invention.

Hereinafter, a bubble floating sterilization system (hereinafter, 'sterilization system') using ultraviolet and ozone microbubbles of a preferred embodiment will be described in detail with reference to the accompanying drawings.

1 to 3, the sterilization system sterilizes the effluent discharged from the sewage treatment plant and at the same time maintains the sterilization efficiency of the effluent, the reaction chamber 10, the ultraviolet irradiator 20, the spray nozzle 30, It includes an ozone microbubble supply unit 40 , a diffuse reflection unit 50 , a backwash nozzle 60 , a backwash water supply unit 70 , a washing unit 80 , and a fluid supply unit 90 .

The reaction chamber 10 is provided with a effluent inlet pipe 11 for inflow of effluent discharged from the sewage treatment plant on one side, and the outflow of treated water in which the virus is sterilized by the interaction between ultraviolet rays and ozone microbubbles (ozone). A treated water outlet pipe 12 for

The ultraviolet irradiator 20 includes an ultraviolet lamp 21, a quartz tube 22, and a socket 23 in order to sterilize the virus of the effluent by the ultraviolet Advanced Oxidation Process (AOP) in the reaction chamber 10 . ) and a cable 24 .

The ultraviolet lamp 21 irradiates ultraviolet (Ultraviolet, UV) to cause interaction with the ozone microbubbles to be sprayed from the injection nozzle 30 into the reaction chamber 310 .

The quartz tube 22 surrounds and protects the ultraviolet lamp 21 , and is made of a quartz material for transmitting (refracting) ultraviolet rays irradiated from the ultraviolet lamp 21 into the reaction chamber 10 .

Here, the transmission of the quartz tube 22 may be diffusion transmission for allowing the ultraviolet rays irradiated from the ultraviolet lamp 21 to be diffused to the entire area within the reaction chamber 10, and according to this ultraviolet diffusion transmission, the reaction chamber 10 As the interaction efficiency of ultraviolet rays and ozone microbubbles is improved in the inside, the generation of OH radicals is maximized, viruses and difficult-to-decompose organic substances can be easily removed in the reaction chamber 10 .

The socket 23 is an inlet for supplying electricity to the ultraviolet lamp 21, and is coupled to the end of the ultraviolet lamp 21 and the end of the quartz tube 22, and from the effluent flowing into the reaction chamber 10, the ultraviolet lamp ( 21) and the quartz tube 22 are supported.

The cable 24 passes through one side of the socket 23 , and is connected to the UV lamp 21 to constitute an electricity supply circuit, thereby supplying electricity to the UV lamp 21 so that UV rays are irradiated from the UV lamp 21 . do.

The injection nozzle 30 injects ozone microbubbles into the reaction chamber 10 in order to sterilize the virus of the effluent by the UV advanced oxidation treatment process in the reaction chamber 10 .

As the spray nozzle 30 sprays the ozone microbubbles, viruses such as microorganisms or organic matter in the effluent are floated to the surface by the ozone microbubbles according to the droplet effect attached to the interface between the ozone microbubbles and water and can be removed.

In addition, the injection nozzle 30 injects ozone microbubbles to generate OH radicals by interaction with ultraviolet rays in the reaction chamber 10 .

And the injection nozzle 30 is spaced apart from the quartz tube 22, as shown in FIG. 2, is disposed in a form surrounding the quartz tube 22, preferentially in the space A separated from the quartz tube 22 As ozone microbubbles are sprayed, OH radicals are preferentially generated in the space A separated from the quartz tube 22 .

Accordingly, in the reaction chamber 10, OH radicals may be preferentially generated in the vicinity of the separation space A between the injection nozzle 30 and the quartz tube 22, and thereafter, ultraviolet and ozone microbubbles are diffused and reacted. OH radicals are generated in the entire effluent in the chamber 10 to sterilize the virus.

In addition, the separation space A is not only a space in which OH radicals are preferentially generated, but also a space in which the cleaning unit 80 can be moved downward toward the lower portion of the reaction chamber 10 .

The ozone microbubble supply unit 40 is provided with an ozone microbubble supply pipe 41 connected to the jetting nozzle 30 in order to supply ozone microbubbles to the jetting nozzle 30 .

The ozone microbubble supply unit 40 generates ozone microbubbles in a different way depending on whether the water treatment in the sterilization system is performed.

If, before the virus-sterilized treated water is generated in the reaction chamber 10 , the ozone microbubble supply unit 40 uses the fluid supplied through the first bypass pipe 91 connected to the fluid supply unit 90 . This can create ozone microbubbles in which ozone and air are dissolved.

In contrast, when the treated water is generated in the reaction chamber 10 , the ozone microbubble supply unit 40 uses a portion of the treated water supplied through the second bypass pipe 100 connected to the treated water outlet pipe 12 . This can create ozone microbubbles in which ozone and air are dissolved.

In addition, the ozone microbubble supply unit 40 generates ozone microbubbles by generating bubbles in supersaturated ozone water in which ozone is dissolved at low temperature and high pressure, and after adjusting the amount and size of ozone microbubbles through temperature and pressure control It can be supplied to the injection nozzle (30).

The diffuse reflector 50 is provided on the side and lower inner surfaces of the reaction chamber 10 to diffusely reflect the ultraviolet rays diffusely transmitted from the quartz tube 22 in the reaction chamber 10 .

In addition, the diffuse reflection unit 50 may be formed of a zigzag mirror in which a plurality of mountains 51 and valleys 52 are provided in order to achieve diffuse reflection of ultraviolet rays.

The backwash nozzle 60 injects backwash water supplied from the backwash water supply unit 70 into the reaction chamber 10 .

In addition, the backwash nozzle 60 is coupled to the upper portion of the reaction chamber 10, and is rotated in one direction to expand and contract while rotating in the other direction by spraying backwashing water into the reaction chamber 10 to the reaction chamber ( 10) backwashing of the inner surface, the ultraviolet irradiator 20 , the spray nozzle 30 and the non-jet part 50 .

This backwashing nozzle 60 can be moved upwards toward the upper portion of the reaction chamber 10 or downward toward the lower portion of the reaction chamber 10 than shown in FIG. 1 as it can be stretched and contracted, where The downward movement is preferably made until it comes into contact with the injection nozzle 30 in order to prevent damage to the injection nozzle 30 .

The backwash water supply unit 70 includes a backwash water supply pipe 71 connected to the backwash nozzle 60 to supply backwash water to the backwash nozzle 60 .

As shown in FIG. 3 , the cleaning unit 80 includes a rotating shaft 81 , a rotating frame 82 and a cleaning brush ( 83).

The rotating shaft 81 is coupled to the upper portion of the reaction chamber 10 and expands and contracts while rotating in one direction or extended while rotating in the other direction.

The rotating frame 82 is connected to the rotating shaft 81 and rotates in one direction by the rotating shaft 81 while rotating upward or downward while rotating in the other direction, and a through hole 82a for allowing the quartz tube 22 to pass therethrough. is formed in the center.

When the quartz tube 22 passes through the through hole 82a according to the vertical movement of the rotating frame 82 , the cleaning brush 83 surrounds the outside of the quartz tube 22 and is in contact with the through hole 82a. It is provided in plurality on the inside.

In addition, the cleaning brush 83 cleans the contaminants by applying pressure to the contaminants attached to the outer periphery of the quartz tube 22 through rotation of the rotating frame 82 in one direction or the other direction.

In addition, the cleaning brush 83 is a hydrophobic material (eg, methallyltrimethylsilane, allyltrimethylsilane, vinyltrimethylsilane, etc.) or an elastomer material (eg, styrene-based, PVC-based, polyamide-based, polyester) that is easy to clean contaminants. system, etc.), and the like.

Furthermore, the cleaning brush 83 is attached to the quartz tube 22 through the cleaning of the quartz tube 22 and it is possible to remove the hardly decomposable organic material remaining in the reaction chamber 10, through which the ultraviolet irradiator 20 ), it is possible to reduce the cost of the advanced UV oxidation treatment process of the sterilization system by delaying the replacement time.

The detailed description of the preferred embodiments of the present invention disclosed as described above is provided to enable any person skilled in the art to make and practice the present invention. Although the above has been described with reference to preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications and changes can be made to the present invention 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 way in combination with each other. Accordingly, 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 restrictive in all respects but as exemplary. The scope of the present invention should be determined by a reasonable interpretation of the appended claims, and all modifications within the equivalent scope of the present invention are included in the scope of the present invention. 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. In addition, claims that are not explicitly cited in the claims may be combined to form an embodiment, or may be included as new claims by amendment after filing.

10: reaction chamber, 11: discharge water inlet pipe,
12: treated water outflow pipe, 13: backwash water outflow pipe,
20: ultraviolet irradiator, 21: ultraviolet lamp,
22: quartz tube, 23: socket,
24: cable, 30: spray nozzle,
40: ozone microbubble supply unit, 41: ozone microbubble supply pipe,
50: difficult ejection part, 51: acid,
52: goal, 60: backwash nozzle,
70: backwash water supply unit, 71: backwash water supply pipe,
80: cleaning unit, 81: rotating shaft,
82: rotating frame, 82a: through hole,
83: cleaning brush, 90: fluid supply,
91: a first bypass tube, 100: a second bypass tube.

Claims (8)

In the sterilization system for sterilizing viruses in effluent discharged from a sewage treatment plant,
a reaction chamber in which the inflow of the effluent, the virus-sterilized treated water and the backwashing water are discharged;
an ultraviolet irradiator provided in the reaction chamber to irradiate ultraviolet rays to the effluent flowing into the reaction chamber;
an injection nozzle for injecting ozone microbubbles into the reaction chamber so that OH radicals are generated in the effluent by interaction with the ultraviolet rays irradiated from the ultraviolet irradiator;
an ozone microbubble supply unit for supplying the ozone microbubbles to the injection nozzle;
a diffuse reflector provided on the side and lower inner surfaces of the reaction chamber to diffusely reflect the ultraviolet rays irradiated from the ultraviolet irradiator;
a backwash nozzle for spraying the backwashing water into the reaction chamber; and
A bubble-floating sterilization system using ultraviolet and ozone microbubbles, comprising: a backwash water supply unit that supplies the backwashing water to the backwashing nozzle. The method of claim 1,
The diffuse reflector,
Bubble floating sterilization system using ultraviolet and ozone microbubbles, characterized in that it is a zigzag mirror having mountains and valleys so that the ultraviolet rays irradiated from the ultraviolet irradiator are diffusely reflected. The method of claim 1,
The backwashing nozzle is
A bubble-floating sterilization system using ultraviolet and ozone microbubbles, which is coupled to the upper portion of the reaction chamber and sprays the backwashing water into the reaction chamber while it is extended while rotating in one direction or expanded and contracted while rotating in the other direction. . The method of claim 1,
The spray nozzle is
The ultraviolet irradiator is spaced apart from a quartz tube through which ultraviolet rays are transmitted, and is disposed to surround the quartz tube so that ozone microbubbles are sprayed into the space spaced apart from the quartz tube so that OH radicals are preferentially generated in the space spaced apart. Bubble floating sterilization system using ultraviolet and ozone microbubbles, characterized in that The method of claim 1,
The sterilization system is
It is coupled to the upper part of the reaction chamber, and moves upward during rotation in one direction or moves downward during rotation in the other direction to clean contaminants attached to the outside of the UV irradiator when the UV irradiator passes through the center. Government; bubble floating sterilization system using ultraviolet and ozone microbubbles, characterized in that it further comprises. 6. The method of claim 5,
The cleaning unit,
a rotation shaft coupled to the upper portion of the reaction chamber and extending or contracting while rotating in the one direction or extending in the other direction;
a rotating frame that moves upward while rotating in the one direction by the rotation shaft or downward while rotating in the other direction, and a through hole for allowing the ultraviolet irradiator to pass therethrough is formed in the center; and
When the ultraviolet irradiator passes through the through hole, a plurality of are provided on the inner surface of the through hole so as to surround and contact the outside of the ultraviolet irradiator, and the outer side of the ultraviolet irradiator through the rotation of the rotating frame in the one direction or the other direction A bubble-floating sterilization system using ultraviolet and ozone microbubbles, including a cleaning brush that cleans contaminants attached to the . 6. The method of claim 5,
The cleaning unit,
A bubble-floating sterilization system using ultraviolet and ozone microbubbles, characterized in that after the treatment of the effluent in the reaction chamber is completed, the contaminants attached to the outside of the ultraviolet irradiator are cleaned before the backwashing process. The method of claim 1,
The ozone microbubble supply unit,
When the treated water is generated in the reaction chamber, ozone microbubbles are generated using the fluid supplied through the first bypass pipe connected to the fluid supply unit,
When the treated water is generated in the reaction chamber, ozone microbubbles are generated using a portion of the treated water supplied through a second bypass pipe connected to the treated water outlet pipe for discharging the treated water from the reaction chamber. Bubble floating sterilization system using ultraviolet and ozone microbubbles, characterized in that.

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