KR20150138972A - Processing device for sewage purification using organic-inorganic hybrid nano-porous materials and methods therefor - Google Patents

Abstract

The present invention relates to a sewage purification apparatus using organic-inorganic hybrid nanoporous bodies and a method thereof. More specifically, the apparatus purifies sewage for the first time by using bio-chips, uses the organic-inorganic hybrid nanoporous bodies as a catalyst to initiate a photocatalytic reaction in order to purify the sewage for the second time, is capable of recycling the organic-inorganic hybrid nanoporous body catalyst, and is capable of minimizing the catalyst consumption for sewage purification. The present invention uses the bio-chips to purify the sewage for the first time and uses the photocatalytic reaction to purify the sewage for the second time. Accordingly, the present invention can extend the UV lamp contamination period for the photocatalytic reaction compared to a method without the first sewage purification process. The organic-inorganic hybrid nanoporous bodies having a particle size of several hundred micrometers is used as the catalyst for the photocatalytic reaction. The present invention can easily separate and recover the sewage and recycle the catalyst with a simple process, thereby enabling continuous sewage purification while reducing costs thereof.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for purifying wastewater using organic / inorganic hybrid nanoporous materials,

The present invention relates to an apparatus and a method for purifying wastewater using an organic hybrid nanoporous material, and more particularly, to a method and apparatus for purifying wastewater using a biochip, The present invention relates to an apparatus and a method for purification of wastewater using an organic / inorganic hybrid nanoporous material capable of minimizing catalyst consumption by purifying wastewater and purifying wastewater by secondary purification of the organic and inorganic hybrid nanoporous catalyst.

Generally, environmental pollution problems are getting worse and the regulations on pollutants are being strengthened. In accordance with this trend, various methods for removing pollutants have been proposed. However, in the case of water pollution, the pollution sources are diversified and new pollutants are continuously generated.

Accordingly, various advanced oxidation methods called AOP (Advanced Oxidation Process) have been developed and devices have been invented. The advanced oxidation method which utilizes the high oxidizing power of the OH radical (· OH) has the advantages of decomposing the organic pollutants in water into CO ₂ and H ₂ O, thus not causing secondary pollution and treating biodegradable and degradable contaminants .

Therefore, many researches and devices for advanced oxidation methods have been invented as a technology that can replace the conventional water treatment process.

Since the OH radicals generated in the above-described advanced oxidation process react with the organic substances very rapidly and almost evenly with almost all organic substances, useful results can be obtained in the oxidation of the refractory organic pollutants. Particularly, the above-mentioned advanced oxidation method is a method in which ultraviolet rays are irradiated to ozone (O ₃ ) or hydrogen peroxide according to a method of generating an OH radical, a method in which pH is controlled, and a photoactive semiconducting metal compound such as titanium (TiO ₂ ) And how to use it.

In the oxidation system using a semiconductor metal compound such as titanium dioxide as a photocatalyst, since it can treat wastewater, which is difficult to treat by the standard activated sludge method, it can efficiently remove the decomposable organic compounds contained in the water or the atmosphere It is attracting attention. The water treatment method using a photocatalyst is advantageous in that the operation and operation of the process are convenient and can be easily applied to a water treatment process using ultraviolet light currently used. Therefore, the applications of photocatalytic processes with these advantages are very broad.

Particularly, as to the mechanism of photocatalytic oxidation by titanium and ultraviolet rays (UV) in an aqueous solution, ultraviolet rays emitted from an ultraviolet lamp emit light energy (wavelength <387.5) higher than band gap energy (= 3.2 eV) nm), electrons are emitted from the valence band of the titanium filled with the electrons to move to the conduction band, and at the same time, positive holes are generated in the valence band of the titanium.

The excited electrons react with oxygen, which is an electron acceptor adsorbed on the surface of the catalyst, to form a superoxide radical. The superoxide radical reacts with water molecules to form hydroxyl radicals having high oxidizing power hydroxylradical. At the same time, holes generated on the surface of titanium react with water molecules or hydroxyl ions adsorbed on the catalyst to generate hydroxyl radicals or directly react with organic compounds to decompose organic compounds. In addition, both electrons and holes generated in the photocatalyst generate OH radicals by oxidation and reduction reactions. At this time, the produced OH radicals react with organic matters in the water in various forms to proceed decomposition.

However, titanium has a very good photocatalytic activity in the ultraviolet region occupying 4 to 5% of the sunlight, but has a disadvantage in that it does not have photocatalytic activity in the visible light region, which occupies most of the sunlight. In addition, the conventional titanium is in the form of a powder, which is difficult to be separated and recovered after the decomposition reaction of the pollutants, and thus has a limitation in commercial application.

In order to solve these problems, the effect of the catalyst in the visible light and the ultraviolet ray region is excellent, and since the particle size is about several hundred micrometers, it is easy to separate and recover after use, An apparatus and method for purifying wastewater using a porous body has been developed.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above problems occurring in the prior art, and an object of the present invention is to provide a hybrid organic / inorganic hybrid nanomaterial capable of generating a photocatalytic reaction primarily in purified wastewater to secondarily purify the organic wastewater, It is an object of the present invention to propose an apparatus and method for purifying wastewater using a porous body.

Another object of the present invention is to provide a catalyst for generating a photocatalytic reaction, which is capable of separating and recovering from wastewater using an organic hybrid nanoporous material, and capable of regenerating the catalyst, using an organic hybrid nanoporous material And an apparatus and method for purifying wastewater.

The present invention relates to an apparatus for purifying wastewater primarily purified by a biofilter, comprising: a biofilter for introducing wastewater into the biofilter to purify the wastewater using the biochip; at least one ultraviolet ray Wherein at least two photocatalytic reaction vessels are connected in series and the wastewater is moved by the head difference, and the wastewater is purified by the catalyst and the ultraviolet lamp A photocatalyst reaction unit and a diffuser provided in the bottom of the photocatalytic reaction tank for continuously stirring wastewater in the photocatalytic reaction tank with a catalyst, wherein the photocatalytic reaction tank contains an organic hybrid nanocomposite as a catalyst And a hybrid It provides a waste water purification device using the no-pore sieve.

(Step 1) of purifying wastewater by using a biochip, irradiating the primary purified wastewater with ultraviolet rays to irradiate the primary purified wastewater through the photocatalytic reaction of the organic hybrid nanocomposite catalyst (Step 2), and separating the catalyst having generated the photocatalytic reaction from the wastewater, and regenerating the catalyst in which the photocatalytic reaction has occurred (step 3) A method of purifying wastewater using a nano-porous body is provided.

(Step 1) of purifying wastewater by using a biochip, irradiating the primary purified wastewater with ultraviolet rays to irradiate the primary purified wastewater through the photocatalytic reaction of the organic hybrid nanocomposite catalyst (Step 2) of recovering the photocatalyst-containing catalyst from the wastewater, and recovering the catalyst in which the photocatalytic reaction has been generated by heating the catalyst after the photocatalytic reaction is separated from the wastewater (step 3) And the chemical oxygen demand (COD) of the wastewater is purified to 20 ppm or less.

According to the present invention, since the wastewater is firstly purified using the biochip and then the wastewater is secondarily purified using the photocatalytic reaction, the ultraviolet lamp for photocatalytic reaction The time for contamination to proceed can be prolonged. In addition, as a catalyst due to the photocatalytic reaction, organic hybrid nanoporous material having a particle size of about several hundreds of micrometers is used, and it is easy to separate and recover from wastewater, and the catalyst can be regenerated by a simple process, It is possible to reduce the cost for purification of wastewater.

1 is a view showing an apparatus for purifying wastewater using an organic / inorganic hybrid nanoporous material according to an embodiment of the present invention.
2 is a graph showing removal rates of chemical oxygen demand (COD) over time of the catalyst of Example 6 and Comparative Examples 3 to 5 of the present invention.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a photocatalytic reaction which is capable of generating a photocatalytic reaction on a primary purified wastewater and purifying the secondary wastewater, thereby increasing the time for contamination of the ultraviolet lamp for irradiating light, It is an object of the present invention to propose an apparatus and a method for purifying wastewater using an organic / inorganic hybrid nanoporous material which is easy to separate and recover from wastewater by using an organic / inorganic hybrid nanoporous material as a catalyst and regenerate a catalyst.

To this end, the present invention provides a biofilter comprising: a biofilter for introducing wastewater and purifying the wastewater using a biochip;

Wherein at least two photocatalytic reactors including at least one ultraviolet lamp provided in a housing are provided at least two or more than one, The photocatalytic reaction unit includes a photocatalytic reaction unit connected in series to move the wastewater by a head difference, and to purify the wastewater by the catalyst and the ultraviolet lamp. And

A photocatalytic reaction tank provided in the bottom of the photocatalytic reaction tank, for continuously stirring the wastewater in the photocatalytic reaction tank with the catalyst,

And a hybrid nanocomposite having an organic structure is included as a catalyst in the photocatalytic reaction tank. The present invention also provides an apparatus for purifying wastewater using an organic / inorganic hybrid nanoporous material.

Hereinafter, an apparatus for purifying wastewater using an organic / inorganic hybrid nanoporous material according to the present invention will be described in detail with reference to the drawings.

1 is a view illustrating an apparatus for purifying wastewater using an organic / inorganic hybrid nanoporous material according to an embodiment of the present invention.

1, an apparatus for purifying wastewater using an organic / inorganic hybrid nanoporous material may include a bio-filter unit 100, a photocatalytic reaction unit 200, and a diffusion unit 300.

The biofilter unit 100 may include a biochip therein to allow wastewater to be introduced from the outside. The biochip in the biofilter unit 100 may be formed of at least one or more materials. The bio-filter unit 100 is a device for primarily purifying the introduced wastewater, and may be means for removing suspended solids present in the wastewater by bio-chips having various sizes and materials.

The photocatalytic reaction unit 200 may include at least two photocatalytic reaction vessels 210. The photocatalytic reaction vessel 210 includes a housing 211, an ultraviolet lamp 212, a catalyst 213, and a mesh 214 can do. The at least two photocatalytic reaction vessels 210 may be connected in series. When the at least two photocatalytic reaction vessels 210 are formed in series, a water head difference occurs in the photocatalytic reaction vessel 210 due to the introduction of wastewater, and the introduced wastewater is discharged to the outlet by the water head difference.

The housing 211 is a hollow structure formed up and down, and wastewater can be introduced, and the flow of the introduced wastewater can be guided. The housing 211 may have one inlet for introducing the number of opalescence and one outlet for discharging the wastewater.

The ultraviolet lamp 212 is installed inside the housing 211 and can irradiate ultraviolet rays to the wastewater flowing into the housing 211. This is a means for causing a photocatalytic reaction and can decompose the organic matter by reacting with the organic material existing in the inside of the Auffice together with the catalyst 213. The hybrid organic / inorganic hybrid nanoporous material used in the photocatalytic reaction is a porous metal oxide-carbon composite which is economically, chemically or biologically stable, has no toxicity, And titanium, which exhibits excellent photocatalytic activity in the ultraviolet ray region, is impregnated. Therefore, it has an excellent photocatalytic activity as well as an effect of maintaining the shape and strength of the composite by using the carbon-based carrier.

As the carbon-based carrier, carbon black, activated carbon, mesoporous carbon, carbon nanotubes, carbon fiber and the like may be used, and it is more preferable to use activated carbon showing organic material removing characteristics, but the present invention is not limited thereto.

The content of titanium impregnated in the carbon-based carrier is preferably 1 to 10% by weight based on the carrier. When the content of titanium is less than 1% by weight based on the carrier, the produced porous metal oxide-carbon composite can not exhibit excellent photocatalytic activity. When the content of impregnated titanium exceeds 10% by weight, excessive titanium There is a problem in that an economic loss occurs.

The catalyst 213 preferably has a capacity of 10 to 30 g / L based on the wastewater. When the capacity of the catalyst 213 is less than 10 g / L, the photocatalytic reaction of the catalyst 213 is insignificant and the effect can not be expected. When the catalyst 213 is added to the wastewater at a rate of 30 g / L, the efficiency of the photocatalytic reaction may be lowered because the amount of the catalyst 213 is excessive.

The photocatalytic reaction tank 210 has one inlet and one outlet, and the mesh 214 may be installed at the inlet and the outlet. At this time, it is preferable that the mesh 214 is fabricated with 70 ~ 90 mesh. If the mesh 214 is less than 70 meshes, the catalyst 213 may be discharged to the outside, and if the mesh 214 exceeds 90 meshes, The flow of wastewater may not be active.

Diffuser 300 is in by injecting air into the can located in the bottom, the air diffuser (air diffuser, 300) wastewater in the photocatalyst reacting section 200 to the cell state, the catalyst present within the waste water sewage It is possible to perform a distributed operation. This may be a means for more efficiently performing the photocatalytic reaction due to stirring of the catalyst and wastewater.

The present invention also provides a method for producing a hybrid nanocomposite using the organic / inorganic hybrid nanoporous material,

 A step of purifying the wastewater by using a biochip (step 1);

(Step 2) of purifying the primarily purified wastewater through a photocatalytic reaction of the organic hybrid nanocomposite catalyst by irradiating ultraviolet rays to the primarily purified wastewater;

And separating the catalyst having generated the photocatalytic reaction from the wastewater and heating the catalyst to regenerate the catalyst having generated the photocatalytic reaction (Step 3). The present invention also provides a method for purifying wastewater using the organic / inorganic hybrid nanoporous material do.

Hereinafter, a method for purifying wastewater using the organic / inorganic hybrid nanoporous material according to the present invention will be described step by step.

In the method of purifying wastewater using the organic / inorganic hybrid nanoporous material according to the present invention, the wastewater is primarily purified by using a biochip.

At least one biochip used in the purification of step 1 may be used, and the biochip of various sizes and various kinds of biochips may be used to filter suspended matters of various sizes existing in the wastewater. In the step 1, the introduced wastewater can be primarily purified.

In the method for purifying wastewater using the organic / inorganic hybrid nanoporous material according to the present invention, the step 2 is a step of irradiating ultraviolet rays to the primarily purified wastewater to perform a photocatalytic reaction of the organic hybrid nano- Secondly purifies purified wastewater.

The treatment method of step 2 may cause the photocatalytic reaction as mentioned above to decompose the organic matter present in the primarily purified wastewater. The porous metal oxide-carbon composite is a catalyst which is economically, chemically or biologically stable, cost-effective, cost-effective, and non-toxic, Organic hybrid nanoporous materials impregnated with titanium exhibiting excellent photocatalytic activity can be used. In addition, when the organic / inorganic hybrid nanoporous material is used as a catalyst, a photocatalytic reaction can be generated by irradiating visible light as well as ultraviolet light. The chemical oxygen demand (COD) of the wastewater purified by the method of step 2 may be 20 ppm or less. In the method of the step 2, air bubbles may be generated inside the photocatalytic reaction tank through the air diffuser to disperse the catalyst in the wastewater. In this case, the air bubbles may have a capacity of 1 to 2 times the capacity of the photocatalytic reaction tank Lt; / RTI &gt; per minute. When the air bubbles are supplied at a capacity of less than 1 times the capacity of the photocatalytic reaction vessel, the catalyst may not be well dispersed in the wastewater, so that the photocatalytic reaction may not take place well. If it is supplied more than 2 times, the efficiency of the photo-oxidation reaction may be lowered due to over-feeding of the air bubbles.

In the method of purifying wastewater using the organic / inorganic hybrid nanoporous material according to the present invention, the step 3 separates the catalyst having generated the photocatalytic reaction from the wastewater, and then heating the catalyst to regenerate the catalyst having the photocatalytic reaction .

The heating in step 3 is preferably performed in a reaction space of nitrogen atmosphere at a temperature of 600 to 700 ° C for 50 minutes to 70 minutes. If the reaction space is not a nitrogen atmosphere, the efficiency of catalyst regeneration is lowered. If the temperature is lower than 600 ° C, the regeneration of the catalyst may not be performed well. If the temperature exceeds 700 ° C , The catalyst may be damaged. If the heating time is less than 50 minutes, regeneration of the catalyst may not be performed well, and if the heating time exceeds 70 minutes, the catalyst may be damaged.

Hereinafter, the present invention will be described in more detail with reference to specific examples and experimental examples. The following examples and experimental examples are provided to illustrate the present invention, but the present invention is not limited by the following examples and experimental examples.

&Lt; Example 1 >

An ultraviolet lamp (16 W, 254 nm) was installed in a housing having a capacity of 2 L to constitute a photooxidation reactor. At this time, the photo-oxidation reaction vessel was connected in series with four of the photo-oxidation reaction tanks to constitute a photooxidation reaction section so that the wastewater flows by the head difference. The flow rate of the wastewater flowing into the photooxidation reaction section was 100 mL / min. The chemical oxygen demand (COD) of the wastewater was 33.06 ppm. The catalyst added to the photooxidation reaction part was added to the wastewater at a rate of 10 g / L. As the carbon-based support, the catalyst of the present invention was an organic / inorganic hybrid nanocomposite catalyst in which titanium was supported on carbon black, which was a porous metal oxide-carbon composite. A mesh of 80 meshes was installed at the inlet and the outlet of each photo-oxidation reactor to recover the catalyst. The amount of air bubbles flowing into the photo-oxidation reaction tank through the air diffuser is introduced at an amount of 3 L / min to stir the catalyst in the wastewater.

&Lt; Example 2 >

The amount of air bubbles introduced into the photo-oxidation reaction tank through the air diffuser was introduced in an amount of 2 L / min.

&Lt; Example 3 >

The amount of air bubbles introduced into the photo-oxidation reaction tank through the air diffuser was introduced in an amount of 4 L / min.

&Lt; Comparative Example 1 &

The amount of air bubbles introduced into the photo-oxidation reaction vessel through the air diffuser was introduced at a rate of 1 L / min.

&Lt; Comparative Example 2 &

The amount of air bubbles introduced into the photo-oxidation reaction tank through the air diffuser was introduced in an amount of 6 L / min.

&Lt; Experimental Example 1 > Evaluation of purification degree of wastewater according to air flow rate

Table 1 summarizes the chemical oxygen demand (COD) of the uncleaned wastewater (COD) and the amount of the purified wastewater to analyze the cleanliness of the wastewater according to the amount of air bubbles introduced into the photo-oxidation reaction tanks of Examples 1 to 3 and Comparative Examples 1 and 2 of the present invention The chemical oxygen demand (COD) of the wastewater was measured, and the results of the analysis are shown in Table 1 below.

Chemical oxygen demand (COD) of unclean wastewater Chemical oxygen demand (COD) of wastewater after purification Example 1 33.06ppm 13.45 ppm Example 2 33.06ppm 14.23 ppm Example 3 33.06ppm 11.04 ppm Comparative Example 1 33.06ppm 25.09 ppm Comparative Example 2 33.06ppm 23.09 ppm

According to the analysis results shown in the above Table 1, in Examples 1 to 3, the chemical oxygen demand (COD) was measured to be 33.06 ppm before the purification or 20 ppm or less after the purification, and about 50% The removal efficiency of COD was found to be excellent.

On the other hand, in the case of Comparative Example 1, the chemical oxygen demand (COD) of the wastewater after the purification was measured to be 27.09 ppm, indicating that the removal effect of chemical oxygen demand (COD) was about 25% In the case of Comparative Example 2, as the amount of the catalyst increased, it was found that the catalyst was not suitable because it interfered with the flow of wastewater.

analysis

&Lt; Evaluation of regeneration degree of catalyst according to heating condition >

The degree of regeneration of the catalyst according to the heating conditions of the catalyst of the present invention was analyzed by using the catalyst treated under the conditions shown in Table 2 below. Iodine Valus and specific surface area (BET) of the catalyst were measured, and the results of the analysis are shown in Table 2 and FIG. 2 below.

Playback condition Iodine Valus (m ² / s) Specific surface area (BET, m ² / s) Condition 1 - (activated carbon) 987 1137.1 Condition 2 - (unused catalyst) 908 995.3 Condition 3 600 [deg.] C., 50 min 811 933.5 Condition 4 700 ° C, 60 min 822 923.1 Condition 5 650 [deg.] C., 60 min 828 943.8 Condition 6 25 ° C, 24h 486 662.8 Condition 7 120 ° C, 24h 486 804.8 Condition 8 300 [deg.] C., 2h 642 780.3 Condition 9 800 [deg.] C., 60 min - -

According to the results described in Table 2 and Figure 2, if the catalyst after being heated under the condition 3, and the value of the iodine 811 m ² / s, a specific surface area value is larger than the low, but activated carbon with 933.5m ² / s, It can be seen that the numerical value is somewhat lower than that of the non-regenerated catalyst. When being heated by the catalyst condition 4, the iodine value is 822 m ² / s, and the value of the specific surface area is 923.1m ² / s with activated charcoal low, but more significantly, compared with the non-regenerated catalyst is seen rather low levels And it can be seen that the difference in the numerical value is not so large that reproduction is possible. When being heated by the catalyst condition 5, the value of the iodine 828 m ² / s, and the value of the specific surface area is 943.8m ² / s with activated charcoal low, but more significantly, compared with the non-regenerated catalyst is seen rather low levels And it can be seen that the difference in the numerical value is not so large that reproduction is possible.

On the other hand, when the catalyst was heated under the conditions 6 and 7, the values of the iodine valus and the specific surface area (BET) were significantly lower than those of the non-regenerated catalyst, When the catalyst was heated, the catalyst was broken due to heating at a high temperature, and measurement was impossible.

Referring to FIG. 2, the unregenerated catalyst and the catalyst of Example 6 exhibit a reduction in chemical oxygen demand (COD) of about 80% for about 12 hours, sharply dropping after 20 hours from about 60 hours to 30% Indicating a decrease in the chemical oxygen demand (COD). In Comparative Example 3 and Comparative Example 4, it was found that the chemical oxygen demand (COD) was reduced by 25%. In the case of Comparative Example 5, it was found that the chemical oxygen demand (COD) was reduced by about 40% for about 20 hours, and the decrease of the chemical oxygen demand (COD) was drastically decreased after about 20 hours .

100: Biofilter unit
200: photocatalyst reaction part
300: aeration device
210: Photocatalytic reaction tank
211: Housing
212: ultraviolet lamp
213: Catalyst
214:

Claims (10)

A biofilter for introducing wastewater into the wastewater and purifying the wastewater using biochip;
Wherein at least two photocatalytic reactors including at least one ultraviolet lamp provided in a housing are provided at least two or more than one, The photocatalytic reaction unit includes a photocatalytic reaction unit connected in series to move the wastewater by a head difference, and to purify the wastewater by the catalyst and the ultraviolet lamp. And
A photocatalytic reaction tank provided in the bottom of the photocatalytic reaction tank, for continuously stirring the wastewater in the photocatalytic reaction tank with the catalyst,
Wherein the photocatalytic reaction tank contains an organic hybrid nano-porous body as a catalyst inside the photocatalytic reaction tank.
The method according to claim 1,
Wherein the organic / inorganic hybrid nano-
Wherein the porous metal oxide-carbon composite is a porous metal oxide-carbon composite in which titanium is impregnated in a carbon-based carrier.
3. The method of claim 2,
Wherein the organic / inorganic hybrid nano-
Wherein the carbon-based carrier is a carbon-based material selected from the group consisting of carbon black, activated carbon, mesoporous carbon, carbon nanotube, and carbon fiber.
The method according to claim 1,
Wherein the organic / inorganic hybrid nano-
Wherein the content of titanium is 1 to 10% by weight based on the carbon-based carrier.
The method according to claim 1,
Wherein the organic / inorganic hybrid nano-
And a capacity of 10 to 30 g / L is added to the wastewater. The apparatus for purifying wastewater using the organic / inorganic hybrid nanoporous material.
A step of purifying the wastewater by using a biochip (step 1);
(Step 2) of purifying the primarily purified wastewater through a photocatalytic reaction of the organic hybrid nanocomposite catalyst by irradiating ultraviolet rays to the primarily purified wastewater; And
(3) separating the catalyst having generated the photocatalytic reaction from the wastewater and regenerating the catalyst in which the photocatalytic reaction has been generated by heating the catalyst (Step 3). The method according to Claim 1, wherein the purification of the wastewater using the organic / inorganic hybrid nanoporous material A method for purifying wastewater using a device.
The method according to claim 6,
In the step 1,
The method for purifying wastewater using the wastewater purification apparatus using the organic / inorganic hybrid nanoporous material according to claim 1, wherein the suspended matter (sludge) remaining in the wastewater is extracted.
The method according to claim 6,
The step (2)
The method according to claim 1, further comprising the step of irradiating ultraviolet rays to the organic matter existing in the primarily purified wastewater to decompose the organic matter into the catalyst. How to clean.
The method according to claim 6,
The heating in the step 3 is carried out,
The method of claim 1, further comprising the step of heating the reaction mixture at a temperature of 600 to 700 ° C for 50 minutes to 70 minutes in a reaction space in a nitrogen atmosphere, to purify wastewater using the wastewater purification apparatus using the organic / inorganic hybrid nanoporous material .
A step of purifying the wastewater by using a biochip (step 1);
(Step 2) of purifying the primarily purified wastewater through a photocatalytic reaction of the organic hybrid nanocomposite catalyst by irradiating ultraviolet rays to the primarily purified wastewater; And
Separating the catalyst having generated the photocatalytic reaction from the wastewater, and heating the catalyst to regenerate the catalyst having the photocatalytic reaction (Step 3)
Wherein the chemical oxygen demand (COD) of the wastewater is purified to 20 ppm or less.

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