KR102512015B1 - Bubble flotation water treatment system using ultraviolet and ozone microbubbles - Google Patents

Abstract

A bubble flotation water treatment system using ultraviolet rays and ozone microbubbles according to an embodiment of the present invention is a water treatment system for treating anaerobic digestion effluent or organic wastewater. a pretreatment tank provided with a ceramic filter for filtering the raw water and a first spray nozzle for injecting ozone microbubbles to the ceramic filter to remove contaminants accumulated in the ceramic filter; a first ozone micro-bubble supply unit supplying the ozone micro-bubbles to the first injection nozzle; A reaction chamber connected to the pretreatment chamber and into which raw water filtered by the ceramic filter flows, an ultraviolet irradiator for irradiating ultraviolet rays to the raw water, and ozone microbubbles for generating OH radicals by interaction with the ultraviolet rays a reaction tank equipped with a second spray nozzle for spraying into the reaction chamber; and a second ozone micro-bubble supply unit supplying the ozone micro-bubbles to the second injection nozzle.

Description

Bubble flotation water treatment system using ultraviolet and ozone microbubbles}

The present invention relates to a bubble flotation type water treatment system using ultraviolet rays and ozone microbubbles, and more particularly, to filter contaminants in anaerobic digestion effluent or organic wastewater through a membrane filtration process, and then treat them using ultraviolet rays and ozone microbubbles. It relates to a bubble flotation type water treatment system using ultraviolet rays and ozone microbubbles that can be used.

Wastewater treatment refers to treating toxic substances or harmful substances contained in wastewater from factories, cities, etc. to a predetermined acceptable limit water quality.

To preserve water quality in public waters, wastewater discharged from factories or business establishments must be purified and drained until it reaches the standards stipulated in the Framework Act on Environmental Policy, the Water Quality Environment Conservation Act, and the Act on the Treatment of Sewage, Manure, and Livestock Wastewater. To this end, methods such as solid/liquid separation, physicochemical treatment, and biological treatment are used depending on the type or content of wastewater.

The solid-liquid separation method is for separating and recovering suspended matter in wastewater, and the treatment cost is cheap and operation management is easy. The sedimentation separation method by gravity is the most widely used, but as opposed to gravity sedimentation, a method in which floating materials that are easy to float are naturally gathered on the surface of the water, or a forced flotation separation method using the lifting force of microbubbles in water generated by blowing or decompression is also used

Physical and chemical treatment includes methods such as neutralization/pH adjustment, oxidation/reduction, extraction, and adsorption. Neutralization/pH adjustment is to inject acid or alkali into wastewater to release dissolved gas or coagulate/precipitate metal salts, and to adjust pf to the most appropriate value for subsequent treatment. Oxidation and reduction include oxidation and reduction using negative substances, treatment by electrolysis, and oxidative decomposition using ozone or ultraviolet rays. Extraction is to recover useful substances present in wastewater using a solvent, and adsorption is to treat various organic substances and ammonia in wastewater with an adsorbent such as activated carbon or zeolite. In addition, ion exchange, electrodialysis, treatment by reverse osmosis membrane, etc. are also types of physicochemical treatment methods.

Biological treatment is a method of treating wastewater using microorganisms. Depending on the type of contact between microorganisms and wastewater, it is classified into a suspension method and a fixation method. In the suspension suspension method, microorganisms and wastewater are mixed, and microorganisms are separated into treated water and microorganisms in a suspended state, and then microorganisms are returned to wastewater treatment. The fixation methods include the watersprinkling bed method, the rotating disc method, the immersed furnace bed method, and the fluidized bed method, all of which have a fixed support for attaching microorganisms, so that only wastewater passes around the fixed microorganisms.

Wastewater treatment technology is evolving into an environmentally friendly membrane filtration process that is superior to these physicochemical and biological processes in improving water quality and excludes the use of chemicals. Particularly, in wastewater treatment, a membrane-separated activated sludge method combining the advantages of a biologically activated sludge method and a separation membrane technology is attracting attention. A separation membrane is a product that selectively permeates and separates only desired particles from a mixture in a liquid or gas environment. In general, depending on the separation performance, there are microfiltration (MF), ultrafiltration (UF), and nanofiltration membranes. , NF) and reverse osmosis (RO).

Membrane filtration process has the advantage of being able to perform separation and concentration automatically and continuously by simply combining with existing equipment, but it is difficult to perform membrane separation due to membrane contamination by contaminants (solutes) removed over time. As it becomes more difficult, there is a disadvantage in that wastewater treatment efficiency is lowered when applied alone.

Membrane fouling is caused by the formation of a gel layer on the surface of the membrane, solute adsorption in the pores of the membrane, and clogging of the pores. Since this increases, there is a problem in that contaminants must be periodically removed from the separation membrane.

Republic of Korea Patent Registration No. 10-1578977

Therefore, the present invention has been made to solve the above problems, and in order to overcome the disadvantages of a water treatment system using a membrane filtration process alone, the treatment efficiency of raw water containing contaminants is reduced due to membrane fouling, etc. It is an object of the present invention to provide a water treatment system using ozone microbubbles capable of increasing the treatment efficiency of raw water by integrating a separation membrane filtration process and an advanced ultraviolet oxidation treatment process while periodically solving the

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 bubble flotation type water treatment system using ultraviolet rays and ozone microbubbles according to an embodiment of the present invention is a water treatment system for treating anaerobic digestion and organic wastewater, the anaerobic A pretreatment chamber into which raw water such as digestion and desorption liquid or organic wastewater flows, a ceramic filter for filtering the raw water, and a first spray nozzle for spraying ozone microbubbles to the ceramic filter to remove contaminants accumulated in the ceramic filter. a pre-treatment tank; a first ozone micro-bubble supply unit supplying the ozone micro-bubbles to the first injection nozzle; A reaction chamber connected to the pretreatment chamber and into which raw water filtered by the ceramic filter flows, an ultraviolet irradiator for irradiating ultraviolet rays to the raw water, and ozone microbubbles for generating OH radicals by interaction with the ultraviolet rays a reaction tank equipped with a second spray nozzle for spraying into the reaction chamber; and a second ozone micro-bubble supply unit supplying the ozone micro-bubbles to the second injection nozzle.

In addition, the second injection nozzle is spaced apart from the quartz tube through which ultraviolet rays are transmitted in the ultraviolet irradiator, and is disposed in a form surrounding the quartz tube to inject ozone microbubbles into a space separated from the quartz tube, thereby separating the space from the quartz tube. OH radicals can be preferentially generated in the space.

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

In addition, the cleaning unit may include a rotating shaft coupled to an upper portion of the reaction chamber and extending and contracting while rotating in one direction or extending in the other direction; a rotating frame that moves upward while rotating in one direction by the rotating shaft or downward while rotating in the other direction, and has a through-hole formed in a central portion through which the ultraviolet irradiator passes; And when the ultraviolet irradiator passes through the through-hole, a plurality of parts are provided on the inner surface of the through-hole so as to surround and contact the outer side of the ultraviolet irradiator, and rotate the rotating frame in one direction or the other direction to rotate the ultraviolet irradiator. It may include; a cleaning brush for cleaning contaminants attached to the outside.

The cleaning unit may clean contaminants attached to the outside of the UV irradiator before backwashing after the treatment of the raw water is completed in the reaction tank.

In addition, the first and second ozone microbubble supply units use the fluid supplied through the first bypass pipe connected to the fluid supply unit to generate ozone microbubbles before the treated water containing OH radicals is generated in the reaction chamber. And when the treated water is generated in the reaction chamber, a portion of the treated water supplied through the second bypass pipe connected to the treated water outflow pipe for discharging the treated water from the reaction chamber is used to generate ozone fineness. bubbles can be created.

According to the present invention, by combining the separation membrane filtration process and the advanced UV oxidation treatment process, the treatment efficiency of raw water, which is an anaerobic digestion and evaporation liquid or organic wastewater, can be increased.

In addition, according to the present invention, by removing contaminants attached to the ceramic filter used in the separation membrane filtration process and the ultraviolet irradiator used in the advanced ultraviolet oxidation treatment process, the raw water treatment efficiency of the separation membrane filtration process and the advanced ultraviolet oxidation treatment process can be maintained. can

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 explanatory view of a bubble flotation type water treatment system using ultraviolet rays and ozone microbubbles according to an embodiment of the present invention.
FIG. 2 is a schematic explanatory view for explaining an ozone microbubble injection method of the first injection nozzle shown in FIG. 1 .
FIG. 3 is a schematic explanatory view for explaining an ozone micro-bubble injection method of the second injection nozzle shown in FIG. 1;
FIG. 4 is a schematic explanatory view for explaining a contaminant cleaning method 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 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 bubble flotation type water treatment system (hereinafter referred to as 'water treatment system') using ultraviolet rays and ozone microbubbles of a preferred embodiment will be described in detail with reference to the accompanying drawings.

1 to 4 , the water treatment system includes a pretreatment tank 100, a first ozone micro-bubble supply unit 200, a reaction tank 300, and a second ozone micro-bubble supply unit 400.

The pre-treatment tank 100 includes a pre-treatment chamber 110, a ceramic filter 120, and a first spray nozzle 130 to pre-treat an anaerobic digestion solution or organic wastewater (hereinafter referred to as 'raw water').

The pretreatment chamber 110 is provided with a raw water inlet pipe 111 for inflow of raw water, and a raw water discharge pipe 112 for moving raw water from which pollutants have been filtered by the ceramic filter 120 to the reaction tank 300. ) is provided on the side.

In addition, although the pretreatment chamber 110 is not shown in the drawing, the backwashing water inlet pipe and the backwashing water inlet for backwashing the inner surface of the pretreatment chamber 110, the ceramic filter 120, and the first spray nozzle 130 are introduced. It is preferable that a backwashing water outflow pipe is provided to enable the outflow of the backwashing water used in the above.

The ceramic filter 120 is provided inside the pretreatment chamber 110 to filter contaminants (eg, organic and/or inorganic substances) from the raw water in order to perform the membrane filtration process in the pretreatment chamber 110 .

In addition, the ceramic filter 120 not only filters contaminants of the raw water, but also reduces the turbidity of the raw water, thereby facilitating the treatment process of the raw water using ozone and ultraviolet rays in the reaction tank 300.

In addition, a plurality of ceramic filters 120 may be provided in the pretreatment chamber 110, not just one, and the plurality of ceramic filters 120 may include a microfiltration membrane (MF) for filtering bacteria included in the raw water, and raw water. An ultrafiltration membrane (UF) for filtering high molecular weight organic substances contained in the water, a nanofiltration membrane (NF) for filtering low molecular weight organic substances of polyvalent ions, and a reverse osmosis membrane (RO) for filtering alga ions, etc. It is arranged to filter contaminants in raw water, and the spacing of each membrane is adjusted so that each membrane is in close contact or separated.

The first injection nozzle 130 receives ozone from the first ozone micro-bubble supplier 200 to prevent the function of the ceramic filter 120 from being deteriorated due to contaminants accumulated on the surface of the ceramic filter 120. Fine bubbles are injected into the ceramic filter 120 .

Here, the timing at which the first injection nozzle 130 injects the ozone microbubbles to the ceramic filter 120 is from after the inflow of raw water into the pretreatment chamber 110 is finished to before backwashing of the pretreatment chamber 110 is performed. it is desirable

In addition, as shown in FIG. 2, the first injection nozzle 130 is a through-hole 131 through which raw water passes in order to move raw water filtered through the ceramic filter 120 to the raw water outlet pipe 112. ) is formed in the center of the frame 132 and is preferably provided in plurality on the inner surface of the through hole 131 .

Also, the first injection nozzle 130 is illustrated as being provided at the rear end of the ceramic filter 120 as shown in FIG. 1 , but is not limited thereto, and may also be provided at the front end of the ceramic filter 120 .

Furthermore, the distance between the first injection nozzle 130 and the ceramic filter 120 may be adjusted through a moving means (not shown) further provided in the pretreatment tank 100 . Through this, in the pretreatment tank 100, the strength of the ozone microbubbles applied to the ceramic filter 120 can be adjusted.

The first ozone micro-bubble supply unit 200 includes a first ozone micro-bubble supply pipe 210 connected to the first injection nozzle 130 to supply ozone micro-bubbles to the first injection nozzle 130 .

The first ozone micro-bubble supply unit 200 generates ozone micro-bubbles in different ways depending on whether water treatment has been performed in the water treatment system.

If, in the reaction chamber 310, before treated water from which contaminants are removed by OH radicals is generated, that is, before water treatment is performed, the first ozone microbubble supply unit 200 is connected to the fluid supply unit 500. 1 Ozone microbubbles in which ozone and air are dissolved can be generated using the fluid supplied through the bypass pipe 510.

In contrast, when treated water is generated in the reaction chamber 310, the first ozone microbubble supply unit 200 is part of the treated water supplied through the second bypass pipe 600 connected to the treated water outlet pipe 311. It is possible to generate ozone microbubbles in which ozone and air are dissolved by using.

In addition, the first ozone microbubble supply unit 200 generates ozone microbubbles by generating bubbles in supersaturated ozone water in which ozone is dissolved at low temperature and high pressure, and adjusting the amount and size of ozone microbubbles by adjusting the temperature and pressure After that, it can be supplied to the first injection nozzle 130.

The reaction tank 300 includes a reaction chamber 310, an ultraviolet irradiator 320, a second spray nozzle 330, and a cleaning unit 340 to post-process raw water from which pollutants have been filtered.

The reaction chamber 310 has a treated water outlet pipe 311 on the side of the reaction chamber 310, in which raw water flowing out from the raw water outflow pipe 112 is introduced, and treated water from which recalcitrant organic substances are removed by the interaction of ozone and ultraviolet rays flows out. and a backwash water inlet pipe 312 is provided at the upper part to introduce backwash water for backwashing the inner surface of the reaction chamber 310, the ultraviolet irradiator 320, the second spray nozzle 330, and the washing unit 340. and a backwashing water outflow pipe 313 is provided at the bottom to enable the outflow of the backwashing water used for backwashing.

The ultraviolet irradiator 320 includes an ultraviolet lamp 321, a quartz tube 322, a socket 323, and a cable 324 so that an ultraviolet advanced oxidation process (AOP) is performed in the reaction chamber 310. includes

The ultraviolet lamp 321 irradiates into the reaction chamber 310 ultraviolet rays (UV) that will interact with ozone microbubbles (ozone) to be injected from the second spray nozzle 330 .

The quartz tube 322 surrounds and protects the UV lamp 321 and is made of a quartz material for transmitting (refracting) UV rays irradiated from the UV lamp 321 into the reaction chamber 310 .

Here, the transmission of the quartz tube 322 may be diffusion transmission to diffuse the ultraviolet rays irradiated from the ultraviolet lamp 321 to the entire area within the reaction chamber 310, and according to the diffusion transmission of the ultraviolet rays, the reaction chamber 310 As the interaction efficiency between ultraviolet rays and ozone microbubbles is improved and generation of OH radicals is maximized in the reaction chamber 310, difficult-to-decompose organic substances can be easily removed.

The socket 323 is an inlet for supplying electricity to the ultraviolet lamp 321, and is combined with the end of the ultraviolet lamp 321 and the end of the quartz tube 322 to supply the ultraviolet lamp from raw water flowing into the reaction chamber 310 ( 321) and the quartz tube 322 are supported.

The cable 324 passes through one side of the socket 323 and is connected to the UV lamp 321 to form an electricity supply circuit, thereby supplying electricity to the UV lamp 321 so that the UV lamp 321 emits ultraviolet rays. do.

The second injection nozzle 330 injects micro-bubbles of ozone into the reaction chamber 310 so that OH radicals are generated in the reaction chamber 310 by interaction with the ultraviolet rays of the ultraviolet irradiator 320 .

As the second injection nozzle 330 sprays the ozone microbubbles, contaminants such as microorganisms or organic matter in the raw water are floated to the surface of the water by the ozone microbubbles and removed according to the droplet effect attached to the interface between the ozone microbubbles and the water. can

In addition, the second injection nozzle 330 is spaced apart from the quartz tube 322 as shown in FIG. As the ozone microbubbles are preferentially sprayed to, OH radicals are preferentially generated in the space A separated from the quartz tube 322.

Accordingly, in the reaction chamber 310, OH radicals may be generated first in the vicinity of the separation space A between the second injection nozzle 330 and the quartz tube 322, and then ultraviolet rays and ozone microbubbles are diffused. Thus, OH radicals may be generated in all raw water in the reaction chamber 310.

Further, 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 340 can move downward toward the lower part of the reaction chamber 310 .

As shown in FIG. 4, the cleaning unit 340 includes a rotating shaft 341, a rotating frame 342, and a cleaning brush 343 to clean contaminants attached to the outer periphery of the quartz tube 322 during the raw water treatment process. ).

Here, the cleaning process of the cleaning unit 340 cleaning the contaminants attached to the quartz tube 322 is from after the inflow of raw water into the reaction chamber 310 is finished to before backwashing of the reaction chamber 310 is performed. it is desirable

The rotating shaft 341 is coupled to the upper portion of the reaction chamber 310, and expands while rotating in one direction or extends while rotating in another direction.

The rotating frame 342 is connected to the rotating shaft 341 and moves upward while rotating in one direction by the rotating shaft 341 or moving downward while rotating in the other direction, and has a through hole 342a for allowing the quartz tube 322 to pass through is formed in the center.

When the quartz tube 322 passes through the through hole 342a according to the vertical movement of the rotating frame 342, the cleaning brush 343 surrounds the outside of the quartz tube 322 and comes into contact with the through hole 342a. It is provided in plurality on the inside.

In addition, the cleaning brush 343 applies pressure to the contaminants attached to the outer periphery of the quartz tube 322 through rotation of the rotating frame 342 in one direction or the other direction to clean the contaminants.

And the cleaning brush 343 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 343 is attached to the quartz tube 322 through cleaning of the quartz tube 322 and can remove non-decomposable organic substances remaining in the reaction chamber 310, through which the ultraviolet irradiator 320 ) It is possible to reduce the cost of the advanced ultraviolet oxidation treatment process of the reaction tank 300 by delaying the replacement time.

The second ozone micro-bubble supply unit 400 includes a second ozone micro-bubble supply pipe 310 connected to the second spray nozzle 330 to supply ozone micro-bubbles to the second spray nozzle 330 .

The second ozone micro-bubble supply unit 400 generates ozone micro-bubbles in different ways depending on whether or not water treatment has been performed in the water treatment system.

If the reaction chamber 310 is before the treated water from which contaminants are removed by OH radicals is generated, the second ozone microbubble supply unit 400 is a first bypass pipe 510 connected to the fluid supply unit 500 It is possible to generate ozone microbubbles in which ozone and air are dissolved by using the fluid supplied through the air.

In contrast, when treated water is generated in the reaction chamber 310, the second ozone microbubble supply unit 400 is part of the treated water supplied through the second bypass pipe 600 connected to the treated water outlet pipe 311. It is possible to generate ozone microbubbles in which ozone and air are dissolved by using.

In addition, the second ozone microbubble supply unit 400 creates ozone microbubbles by generating bubbles in supersaturated ozone water in which ozone is dissolved at low temperature and high pressure, and adjusting the amount and size of ozone microbubbles by adjusting the temperature and pressure After that, it can be supplied to the second injection nozzle 330.

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 way of combining 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 can 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.

100: pretreatment tank, 110: pretreatment chamber,
111: raw water inlet pipe, 112: raw water discharge pipe,
120: ceramic filter, 130: first injection nozzle,
131: through hole, 132: frame,
200: first ozone microbubble supply unit, 210: first ozone microbubble supply pipe,
300: reaction tank, 310: reaction chamber,
311: treated water outflow pipe, 312: backwash water inlet pipe,
313: backwash water outflow pipe, 320: ultraviolet irradiator,
321: ultraviolet lamp, 322: quartz tube,
323: socket, 324: cable,
330: second injection nozzle, 340: washing unit,
341: rotation axis, 342: rotation frame,
342a: through hole, 343: cleaning brush,
400: second ozone microbubble supply unit, 410: second ozone microbubble supply pipe,
500: fluid supply unit, 510: first bypass pipe,
600: second bypass pipe.

Claims (6)

In the water treatment system for treating anaerobic digestion effluent or organic wastewater,
A pretreatment chamber into which raw water, which is the anaerobic digestion effluent or organic wastewater, flows, a plurality of ceramic filters provided in the pretreatment chamber to filter the raw water, and ozone microbubbles for removing contaminants accumulated in the ceramic filter. A pre-treatment tank equipped with a first spray nozzle spraying the filter;
a first ozone micro-bubble supply unit supplying the ozone micro-bubbles to the first injection nozzle;
A reaction chamber connected to the pretreatment chamber and into which raw water filtered by the ceramic filter flows, an ultraviolet irradiator for irradiating ultraviolet rays to the raw water, and ozone microbubbles for generating OH radicals by interaction with the ultraviolet rays a reaction tank equipped with a second spray nozzle for spraying into the reaction chamber;
a second ozone micro-bubble supply unit supplying the ozone micro-bubbles to the second injection nozzle; and
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 ultraviolet irradiator when the ultraviolet irradiator passes through the center. including the government;
The plurality of ceramic filters,
A microfiltration membrane (MF), an ultrafiltration membrane (UF), a nanofiltration membrane (NF), and a reverse osmosis membrane (RO) are arranged in the order to filter contaminants from raw water, and the spacing of each membrane can be adjusted so that each membrane is in close contact or separated,
The first injection nozzle,
At the front or rear end of the ceramic filter, ozone microbubbles are injected into the ceramic filter from after the inflow of raw water into the pretreatment chamber is completed until backwashing of the pretreatment chamber is performed, and ozone microbubbles applied to the ceramic filter The distance from the ceramic filter is adjusted through the moving means of the pretreatment tank so that the intensity of
The second injection nozzle,
It is spaced apart from the quartz tube through which ultraviolet rays are transmitted in the ultraviolet irradiator, and is disposed in a form surrounding the quartz tube to preferentially inject ozone microbubbles into the space separated from the quartz tube so that OH radicals are preferentially generated in the space. to be created,
The cleaning unit,
When moving to the lower side of the reaction chamber, it moves toward the lower side of the reaction chamber along the separation space,
a rotating shaft coupled to an upper part of the reaction chamber and extending and contracting while rotating in one direction or extending in the other direction;
a rotating frame that moves upward while rotating in one direction by the rotating shaft or downward while rotating in the other direction, and has a through-hole formed in a central portion through which the ultraviolet irradiator passes; and
When the ultraviolet irradiator passes through the through-hole, a plurality of parts 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 one direction or the other direction. A cleaning brush for cleaning by applying pressure to contaminants attached thereto;
The cleaning brush,
It is made of a hydrophobic material that is at least one of methallyltrimethylsilane, allyltrimethylsilane, and vinyltrimethylsilane, which is easy to clean contaminants attached to the outside of the ultraviolet irradiator, or among styrene, PVC, polyamide, and polyester. A bubble flotation type water treatment system using ultraviolet rays and ozone microbubbles, characterized in that it is made of at least one elastomer material. delete delete delete According to claim 1,
The cleaning unit,
A bubble flotation type water treatment system using ultraviolet rays and ozone microbubbles, characterized in that after the treatment of the raw water is completed in the reaction tank, the contaminants attached to the outside of the ultraviolet irradiator are cleaned before the backwashing process. According to claim 1,
The first and second ozone microbubble supply units,
When treated water containing OH radicals is generated in the reaction chamber, ozone microbubbles are generated using a fluid supplied through a first bypass pipe connected to a fluid supply unit,
When the treated water is generated in the reaction chamber, generating ozone microbubbles 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 A bubble flotation water treatment system using ultraviolet rays and ozone microbubbles, characterized in that.

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