KR101728846B1 - Apparatus for processing waste water using photo catalysis - Google Patents

Abstract

The present invention provides an apparatus for processing waste water using a photocatalyst, which effectively decomposes non-degradable organic materials using a floating photocatalyst, to make superior water quality. The apparatus for processing waste water using a photocatalyst according to the present invention comprises: a first UV irradiation device for irradiating ultraviolet rays to raw water and a recovered photocatalyst; a photocatalyst injecting device (15) for injecting an insoluble photocatalyst; a curved raw water pipe conduit, through which the raw water injected through the photocatalyst injecting device (15) flows; a second UV irradiation field for irradiating ultraviolet rays to decompose organic materials, floating in a pipe conduit from the outside of the curved raw water pipe conduit; a hollow fiber filter for filtering the photocatalyst to be recovered; and a photocatalyst recovery pipe conduit (50) for re-supplying the photocatalyst to the first UV irradiation device.

Description

TECHNICAL FIELD [0001] The present invention relates to a wastewater treatment apparatus using a photocatalyst,

The present invention relates to a wastewater treatment apparatus using a photocatalyst, and more particularly, to a wastewater treatment apparatus using photocatalyst, in which raw water pipe is substantially expanded to increase the decomposition effect of organic matter through injection of a photocatalyst, and titanium dioxide (TiO2) , It is possible to maximize the effective surface area and the panthen oxidation effect compared to the technology using the existing coating type valve, to improve the recovery efficiency of the built-in hollow fiber filter, to prevent the failure of the equipment and to increase the service life The present invention relates to a wastewater treatment apparatus using a photocatalyst configured to exert an effect.

Conventional electrolysis and a wastewater treatment apparatus using a photocatalyst are disclosed in Korean Patent Laid-Open Publication No. 1019990024785 (Apr.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration diagram showing a constitution of a conventional wastewater treatment apparatus using electrolysis and photocatalysis; FIG.

1, a conventional wastewater treatment apparatus using electrolysis and photocatalysis is provided with a cylindrical container 37 having a treated milk inlet 35 formed at a lower end thereof and a treated water outlet 36 provided at an upper end thereof, An electrolytic means composed of a cathode 34 in the form of a concentric circle and a cathode 33 in the form of a net; (CO 2) in the form of a thin film or a film so as to change into a hydroxyl radical (OH Radical) for removing the organic matter which is resistant to decomposition, which is provided between the cathode (34) and the cathode (33) A titanium (TiO2) photocatalyst layer 38; An ultraviolet lamp (31) for irradiating ultraviolet rays (UV) so that the photocatalyst of the photocatalyst layer (38) is activated; And a quartz tube (32) for protecting the ultraviolet lamp (31).

Such a conventional apparatus is directed to a wastewater treatment apparatus using electrolysis and a photocatalyst that can treat wastewater for domestic and industrial use more efficiently by using electrolysis and photocatalyst, but there is a problem in that titanium dioxide to be injected can not be recycled .

In addition, Korean Patent Application No. 1020100021286 (Mar. 10, 2010) relates to a method of treating a wastewater complex, comprising the steps of mixing a wastewater with a coagulating agent and fine bubbles to produce a wastewater containing the wastewater, The method according to claim 1, wherein the concentrated sludge in the liquid phase is separated and stored in a storage tank, and the concentrated sludge is separated from the concentrated sludge. Evaporating the water contained in the concentrated sludge, concentrating it, and drying the concentrated sludge.

The conventional wastewater treatment method has a problem in that it is not only inconvenient to use but also has an excessive treatment time and a high treatment cost due to the flocculation of suspended solids and subsequent treatment.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a wastewater treatment apparatus using a photocatalyst for efficiently decomposing refractory organic matter using a floating photocatalyst to produce high quality water.

Another object of the present invention is to increase the effective surface area by injecting an insoluble photocatalyst and a capsule type ultraviolet light emitting diode into a pipeline to maximize the panthen oxidation effect and to recover the efficiency of recycling the photocatalyst injected using a hollow fiber filter To provide a wastewater treatment apparatus using a photocatalyst which is capable of reducing the cost of wastewater treatment and packaging the reverse osmosis equipment to provide an integrated facility to enhance the stability and convenience of the wastewater treatment and prevent the failure of the equipment and increase the useful life will be.

It is still another object of the present invention to provide a photocatalytic wastewater treatment apparatus configured to automatically charge ultraviolet light emitting diodes at predetermined time intervals to exert a panthen oxidation effect.

In order to accomplish the above object, the present invention provides a wastewater treatment apparatus using a photocatalyst, comprising: a first UV irradiation device for irradiating raw water and a photocatalyst with ultraviolet rays (UV) to induce sterilization and pentylene oxidation reaction; 1 A photocatalyst injecting apparatus for injecting an insoluble photocatalyst to decompose organic matter contained in a pipeline connected to a UV irradiation apparatus, a curved raw water channel through which the raw water injected through the photocatalyst injecting apparatus flows, A second UV irradiation device for irradiating ultraviolet rays (UV) to decompose the organic matter suspended in the channel from the outside of the channel, a hollow fiber membrane filter connected to the rear end of the second UV irradiation device for filtering and recovering the photocatalyst And a photocatalyst recovery pipe for re-supplying the photocatalyst recovered after the filtering treatment in the hollow fiber membrane filter (UF) to the first UV irradiation device, Device is characterized in that the ultraviolet light-emitting diode is turned on.

Preferably, the ultraviolet light emitting diode is sealed in the capsule.

Here, a wireless rechargeable battery for supplying power to the ultraviolet light emitting diode is installed in the capsule

In addition, a magnet may be installed in the capsule.

On the other hand, the first UV irradiation device may be provided with an electromagnet and a wireless charger.

Here, the photocatalyst uses titanium dioxide (TiO 2) to decompose the organic matter suspended in the curved raw water pipe, recovers the photocatalyst from the hollow fiber membrane filter (UF) (R / O) 60 having a configuration for producing secondary pure water through secondary filtration to produce and discharge pure water and separately discharging the concentrated water.

In addition, the first UV irradiation device may include a transfer pump in a channel between the first UV irradiation device and the second UV irradiation device so as to smoothly transfer the supplied raw water to the hollow fiber membrane filter (UF) (R / O) is applied between the end of the hollow fiber membrane filter (UF) and the reverse osmosis filter unit (R / O) so as to receive a pressure of 15 kgf / And a pressurizing pump for increasing the pressure of the pressurizing fluid.

Preferably, the hollow fiber membrane filter is provided with an air scattering member for scattering air to be injected.

The cleaning agent supply member may further include a tank, a pump installed in the tank, and a hood valve for sucking the cleaning agent in the tank, , And the lower end of the hood valve is disposed below the bottom of the tank.

Preferably, a residual cleaning agent guide is provided at the center of the bottom of the tank.

Here, the bottom of the tank may be inclined by performing the residual cleaning agent guide portion.

According to the embodiment of the present invention, it is possible to efficiently decompose the refractory organic oxide by using the floating photocatalyst and produce high quality water.

In addition, by injecting an insoluble photocatalyst and a capsule type ultraviolet light emitting diode, the effective surface area and the panthen oxidation effect can be maximized.

In addition, the efficiency of collecting the photocatalyst injected using the hollow fiber membrane filter can be improved to reduce the cost of wastewater treatment, and the reverse osmosis equipment can be packaged to provide an integrated facility, thereby enhancing the stability and convenience of wastewater treatment.

In addition, it is possible to prevent failure of the apparatus and increase the service life.

In addition, the apparatus can be easily managed by automatically charging the ultraviolet light emitting diodes at predetermined time intervals to exert a panthen oxidation effect.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram showing the constitution of a conventional wastewater treatment apparatus using electrolysis and photocatalysis,
2 is a configuration diagram of a wastewater treatment apparatus using a photocatalyst according to a preferred embodiment of the present invention,
3 is a front view showing a state in which the ultraviolet light-emitting diode to be charged into the wastewater treatment apparatus is embedded in a capsule,
4 is a configuration diagram of a cleaning agent introducing member included in the wastewater treatment apparatus.

Hereinafter, the configuration of the present invention will be described in detail with reference to the accompanying drawings.

Prior to this, the terms used in the specification and claims should not be construed in a dictionary sense, and the inventor may, on the principle that the concept of a term can be properly defined in order to explain its invention in the best way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Therefore, the embodiments shown in the present specification and the drawings are only exemplary embodiments of the present invention, and not all of the technical ideas of the present invention are presented. Therefore, various equivalents It should be understood that water and variations may exist.

2 is a configuration diagram of a wastewater treatment apparatus using a photocatalyst according to a preferred embodiment of the present invention, and Fig. 3 is a cross-sectional view of a wastewater treatment apparatus using a photocatalyst according to a preferred embodiment of the present invention. FIG. 4 is a configuration diagram of a detergent dispensing member included in the wastewater treatment apparatus. FIG. 4 is a front view of a state in which an ultraviolet light emitting diode inserted in the wastewater treatment apparatus is embedded in a capsule.

2 to 4, the apparatus 100 for treating a wastewater using a photocatalyst according to the present invention comprises a first UV irradiation unit for irradiating raw water and a photocatalyst with ultraviolet rays (UV) A photocatalyst injecting device 15 for injecting an insoluble photocatalyst to decompose organic matter contained in a conduit connected to the first UV irradiating device 2; A second UV irradiation device 20 for irradiating ultraviolet rays (UV) to decompose the organic matter suspended in the channel from the outside of the curved raw water line 20 A hollow fiber membrane filter (UF) 46 connected to the downstream end of the second UV irradiator 30 for filtering and recovering the photocatalyst, a hollow fiber membrane filter (UF) 46 including the ultrafiltration Filter) 46 is subjected to the first UV irradiation And a photocatalyst recovery pipe (50) for re-supplying the wastewater to the device (2), wherein the wastewater treatment device is charged with an ultraviolet light emitting diode (80).

In general, chemical oxygen demand (COD) is a measure of water contamination. When wastewater is discharged into rivers or oceans, water is contaminated by organic substances. An aqueous solution such as potassium permanganate or potassium dichromate is added to the water When added as an oxidizing agent, organic matter is oxidized.

The amount of oxygen required for the amount of oxidizer consumed at this time is referred to as the chemical oxygen demand, expressed in parts per million (ppm) (1 ppm = 0.0001%).

The first UV irradiating device 2 is configured to sterilize and purify raw water to be irradiated with ultraviolet (UV) light, and to induce the pentane oxidation reaction of the photocatalyst to decompose the organic matter.

The first UV irradiating device 2 is installed in a tank housing 10 and an electromagnet 4 for attracting the ultraviolet light emitting diodes 80 to the wireless charging device 6 is installed on one side of the tank housing 10, Respectively.

The electromagnet 4 is operated for a predetermined period of time to attract the magnet 84 installed in the capsule type ultraviolet light emitting diode 80 to the wireless charging device 6 to charge the wireless charging battery 86 do.

The capsule type ultraviolet light emitting diode 80 may be injected through the photocatalyst injecting device 15.

The photocatalyst injector 15 is a device for injecting a titanium dioxide (TiO 2) photocatalyst to decompose organic matter suspended in the curved raw water pipe 20.

The curved raw water line 20 is formed in a curved structure in order to increase the residence time of the raw water injected with the photocatalyst and induce pentylene oxidation.

In the embodiment of the present invention, titanium dioxide (TiO 2) is used as a photocatalyst in order to decompose organic matter suspended in the curved raw water pipe 20.

In addition, the photocatalyst is recovered in the hollow fiber membrane filter (UF) 46, and the treated water that has been primarily filtered is subjected to secondary filtration through a reverse osmosis filter to produce and discharge pure water. And an osmotic filter (R / O) unit 60.

With this configuration, the ultraviolet light-emitting diode 85 is encapsulated together with the titanium dioxide (TiO 2) photocatalyst on the water subjected to the organic decomposition treatment through sterilization and purification through the first UV irradiation device 2, And then flows into the curved raw water pipe 20 to increase the decomposition efficiency of the organic material through the pentane oxidation of the photocatalyst with respect to the substances contained in the raw water and floating in the raw water.

The second UV irradiator 30 is disposed outside the curved raw water pipe 20 for further sterilizing and decomposing organic substances suspended in the channel.

A feed pump (not shown) is connected to the channel between the first UV irradiator 2 and the second UV irradiator 30 to smoothly feed and feed the supplied raw water to the hollow fiber filter (UF) 18).

The reverse osmosis filter unit (R / O) 60 is disposed between the end of the hollow fiber membrane filter (UF) 46 and the reverse osmosis filter unit (R / O) And a pressure pump 48 for increasing the pressure of the process water so as to be able to receive and maintain the pressurized pressure.

According to the experiment of the present inventor, it was confirmed that the reverse osmosis filter unit (R / O) 60 has an effect of producing high quality pure water when a high pressure of not less than 15 [kgf / cm 2] is provided.

In addition, the curved raw water pipe 20 may be disposed inside the second UV irradiating device 30.

That is, by providing the curved raw water pipe 20 in the second UV irradiator 30, it is possible to elicit an effective pentylene oxidation reaction and prolong the reaction time by the curved induction pipe, The volume (size) of the waste water treatment apparatus 100 according to the present invention can be reduced.

The hollow fiber membrane filter (UF) 46 is connected to a return duct 50 for recovering the photocatalyst, and filters the photocatalyst and the ultraviolet LED capsules 80.

In the conventional wastewater treatment apparatus, a hollow fiber membrane filter 46 having such an action is basically not provided, but in the present invention, the hollow fiber membrane filter UF having such an action is integrally provided, And it is possible to secure the quality of water of good quality through filtering.

Air is intensively injected through the nozzle 42 to remove the photocatalyst and the ultraviolet light-emitting diode capsules 80 from the hollow fiber membrane filter 46.

However, when air is continuously injected through the nozzles 42 in the fixed position, a passage opening through which air passes is formed only in a certain region of the hollow fiber filter 46 by the channeling phenomenon, The light emitting diode capsules 80 remain in the hollow fiber membrane filter 46 and can not be recovered.

Thus, the air scattering member 44 for scattering the air supplied through the nozzle 42 is disposed in front of the hollow fiber membrane filter 46, thereby forming irregular turbulence in the supplied air, thereby preventing the channeling phenomenon .

As the air scattering member 44, a small-sized impeller may be used.

The photocatalyst return line 50 is configured to supply the recovered photocatalyst and the capsule type infrared LED 80 to the first UV irradiation device 2 after the filtering process in the hollow fiber filter (UF) to be.

The reverse osmosis filter (R / O) 60 is further connected to a secondary filtration filter (R / O) 60 through the hollow fiber membrane filter (UF) It is a device for producing filtered pure water.

In the conventional wastewater treatment apparatus, the hollow fiber membrane filter (UF) and the reverse osmosis filter (R / O) are provided without using the hollow fiber membrane filter (UF) and the reverse osmosis filter (R / O), thereby improving the convenience of use and providing the advantage of securing the stability of wastewater treatment through primary filtration and secondary filtration.

The ultraviolet light emitting diode 85 is encapsulated in a capsule 82 together with a driving substrate 88 for driving the ultraviolet light emitting diode 85 and a micro wireless rechargeable battery 86 and a magnet 84.

The ultraviolet light emitting diode 85 and the driving substrate 88 are sealed by the capsule 82 so that the structure of the ultraviolet light emitting diode 85 and the like can be mixed and moved in the raw water by buoyancy.

The wireless rechargeable battery 86 installed in the capsule 82 is guided to the wireless charging device 6 by being driven by the electromagnet 4 in the tank 10 in which the first UV irradiation device is installed and charged.

Thus, the wireless rechargeable battery 86 can be charged by driving the electromagnet 4 and the wireless recharging device 6 in predetermined time periods.

A cleaning agent input member 70 for introducing a cleaning agent into the hollow fiber membrane filter 46 is provided and the cleaning agent input member 70 includes a tank 72 and a pump 74 installed in the tank 72. [ And a hood valve 74 for sucking a cleaning agent in the tank 72. The lower end of the hood valve 74 is disposed below the tank bottom 76. [

When the medicine in the tank 72 is sucked through the hood valve 74, it is preferable that the medicine is continuously sucked. If the hood valve 74 is in operation, The operator must operate with the air in the hood valve 74 directly removed.

Such operations are cumbersome and sometimes cause a significant reduction in the throughput of the entire wastewater treatment system.

If the bottom portion 76 of the tank 72 is flat, the cleaning agent will remain in the unintended area at the bottom of the tank, and at this time, air may be drawn into the hood valve 74, .

Therefore, by forming the bottom portion 76 of the tank 72 obliquely as shown in FIG. 4 and forming the remaining detergent guide portion 78 at the center thereof, the residual detergent is guided into the residual detergent guide portion 78 Respectively.

The lower end of the hood valve (74) is disposed in the residual cleaning agent guide (78) so that the cleaning agent can be sucked, thereby preventing air from being introduced into the hood valve (74).

While the present invention has been described with reference to the exemplary embodiments and the drawings, it is to be understood that the technical scope of the present invention is not limited to these embodiments and various changes and modifications may be made without departing from the spirit and scope of the present invention by those skilled in the art. Various modifications and variations may be made without departing from the scope of the appended claims.

2: first UV irradiation device
18: Feeding pump
20: Curved water pipe
15: Photocatalyst injection device
30: Second UV irradiation device
46: Hollow fiber membrane filter (UF)
48: Pressure pump
50: Photocatalyst recovery pipe
60: reverse osmosis filter unit (R / O)
100: Wastewater treatment system using photocatalyst

Claims (11)

A first UV irradiation device for irradiating raw water and photocatalyst with ultraviolet rays (UV) to induce sterilization and pentylene oxidation reaction;
A photocatalyst injector for injecting an insoluble photocatalyst to decompose organic matter contained in a conduit connected to the first UV irradiation device;
A curved raw water line through which raw water injected through the photocatalyst injecting apparatus flows;
A second UV irradiation device for irradiating ultraviolet rays (UV) from the outside of the curved raw water pipe to decompose the organic matter suspended in the pipe;
A hollow fiber membrane filter (Ultrafiltration (UF)) connected to a downstream end of the second UV irradiator for filtering and recovering the photocatalyst;
And a photocatalyst recovery pipe for re-supplying the photocatalyst recovered after the filtering treatment in the hollow fiber filter to the first UV irradiation device,
In the wastewater treatment apparatus, an ultraviolet light emitting diode is charged,
Wherein the ultraviolet light emitting diode is sealed in a capsule,
A wireless rechargeable battery for supplying power to the ultraviolet light emitting diode is installed in the capsule,
A magnet is installed in the capsule,
Wherein the first UV irradiation device is provided with an electromagnet and a wireless charger,
The hollow fiber membrane filter is provided with an air scattering member for scattering air to be injected,
Wherein the air scattering member is composed of an impeller,
Further comprising a cleansing agent input member for inputting a cleansing agent into the hollow fiber membrane filter,
The detergent dispensing member includes a tank;
A pump installed in the tank;
And a hood valve for sucking the cleaning agent inside the tank,
The lower end of the hood valve is disposed below the bottom of the tank
A residual cleaning agent guide is provided at the center of the bottom of the tank,
Wherein the bottom of the tank is inclined toward the residual detergent guide portion. The method according to claim 1,
The photocatalyst uses titanium dioxide (TiO 2) to decompose organic matter suspended in the curved raw water pipe,
After the photocatalyst is recovered from the hollow fiber membrane filter, the treated water that has been primarily filtered is subjected to secondary filtration through a reverse osmosis filter to produce and discharge pure water.
Further comprising a reverse osmosis filter unit (R / O) configured to separate and discharge the concentrated water. 3. The method of claim 2,
Wherein the first UV irradiation device comprises:
And a feed pump is provided in a channel between the first UV irradiation device and the second UV irradiation device so as to smoothly feed and supply the supplied raw water to the hollow fiber membrane filter,
(R / O) is provided between the end of the hollow fiber membrane filter and the reverse osmosis filter unit (R / O) to increase the pressure of the treatment water so that the reverse osmosis filter unit (R / And a pump for pressurizing the photocatalyst. delete delete delete delete delete delete delete delete

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