KR200175434Y1 - apparatus for filtering water by using rotating member provided with oxidized titan-coating optic-activated membrane - Google Patents

Abstract

The present invention includes a titanium oxide photocatalyst coating film having a plurality of rotary members coated with a titanium oxide photocatalyst, which induces activation of the photocatalyst as it is rotated at the interface between air and water to decompose the hardly degradable contaminants and harmful substances contained in the water. It relates to a water pollution purification device using the provided rotating member. The present invention comprises a pollutant purification means whose outer surface is coated with a titanium oxide photocatalyst coating film and rotated to widen the contact area with contaminants; Power transmission means for transmitting rotational power to the pollution purification means; And light irradiation means for inducing photochemical activity of the pollution purification means; Provided is a water pollution purification apparatus using a rotating member equipped with a titanium oxide photocatalyst coating film is activated by the light irradiation means, and rotated by the power transmission means to purify the pollutants in contact with the pollutants. There is a technical point to this.

Description

Water pollution purification device using a rotating member equipped with a titanium oxide photocatalyst coating film {apparatus for filtering water by using rotating member provided with oxidized titan-coating optic-activated membrane}

The present invention relates to an apparatus for purifying water pollution, and more particularly, a plurality of rotating members coated with titanium oxide photocatalysts are provided to induce activation of the photocatalyst as it rotates at the interface between the air and the water, thereby contaminating hardly decomposable pollutants contained in the water. The present invention relates to a water pollution purification device using a rotating member provided with a titanium oxide photocatalyst coating film for decomposing substances and harmful substances.

In general, as the industry develops, the amount of harmful substances flowing into rivers and lakes is increasing, and moreover, non-degradable organic matters are not properly purified in subsequent water purification processes, which have a fatal effect on the human body. Meanwhile, interest in drinking water disinfection due to pollution by protozoa such as copper, phytoplankton and Cryptosporidium distributed in water sources is increasing. Toxins such as microcystin and anatoxin saxitoxin, which are contained in algae, are leaked from the algae by ozone injected for the purpose of oxidative decomposition of harmful organic compounds. In order to remove them, an excessive amount of oxidizing agent is reacted with organic substances remaining in water to produce by-products such as trihalomethanes (THMs) and aldehydes known as carcinogenic substances. In addition, when some algae that cause odors dominate the streams or lakes, which are the sources of water, they are produced by the metabolism of geozimin (C ₁₂ H ₂₂ 0: trans-1,10-dimethyl-trans-9decaol ) Or 2-M-Ivy (C ₁₁ H ₂₀ O: 2-methyl-iso-borneneol) is released, causing odor.

In order to effectively remove the various foreign substances as described above, in the present water treatment plant, in addition to the general water treatment process, an advanced water treatment process using ozone and granular activated carbon (GAC) is performed. However, this high water purification process requires excessive facility investment and maintenance costs, and the treatment efficiency is significantly reduced after a period of about 3-6 months to maintain the adsorption performance of activated carbon despite the huge scale and cost investment. There is a problem. In addition, by the high water treatment process, disinfection by-products such as trihalomethane and bromate produced by ozone treatment, which are known to be carcinogenic substances produced by chlorine injected for sterilization, are hardly removed and reach a general home. This tends to remain until the reaction time is increased, but rather increases as the reaction time increases in the water conduit.

Since the secondary pollutants produced in the present advanced water treatment process cannot be properly removed, various methods have been proposed to remove the pollutants more efficiently. One such method is the decomposition of pollutants by photochemical treatment. The photochemical technology is very effective because the equipment is simple compared to the existing water treatment technology and there are few chemicals, so that the equipment cost and operating cost are low, and the light irradiation energy does not cause secondary pollution. In addition, the photochemical treatment technology is not only sludge generated, but also has recently been in the spotlight due to its high photodegradation effect on organic chlorine compounds, which are biologically difficult to decompose. As the photocatalyst used for the photochemical treatment, TiO ₂ , WO ₃ , ZnO, SiC, Cds, GaAs, and the like are used, but most commonly titanium oxide (TiO ₂ ) is widely used.

In addition, the pollutant treatment method using the photocatalyst is currently used in the form of pellets or hollow balls coated on a powder or fixed carrier of titanium oxide.

Powdered titanium oxide is suspended in water to treat contaminants in water, and then used as a method of recycling through a recovery device. Suspensions of titanium oxide are fine particles of powder, which have a large specific surface area, and thus have high treatment efficiency due to many contact circuits with contaminants. However, since a separate recovery device is required, not only a large installation cost is required, but also a large facility such as water and sewage treatment is not applicable due to the limitation of the recovery device, and there is a problem that only a small device can be used.

In addition, if it cannot be reused due to coloring or contamination after a certain period of time, sludge is generated due to recovery and disposal. If too much titanium oxide is injected into the water, the yield of electron hole generation showing activity as a photocatalyst is lowered due to a decrease in light transmittance. There is a problem.

On the other hand, the pellet or hollow ball-type titanium oxide has a problem that unlike the powdery phase, there is no difficulty in the recovery recovery, but practically no removal efficiency of actual harmful substances. That is, the most important thing in the photocatalytic reaction is the reaction efficiency per unit particle, which is directly related to the contact opportunity with contaminants. Therefore, a form of stagnation in water or floating on the surface layer acts only on the water surface where light reaches, and thus the photocatalytic activity is lowered in the lower part of the water surface where it is difficult to reach the light, thereby reducing the decomposition efficiency of pollutants.

Therefore, although the usefulness according to the contaminant resolution of such titanium oxide photocatalyst has already been widely verified experimentally, although there are many patents, as well as Japanese Patent Application Laid-Open No. 6-328068, most of the patents applied are powdered and pelletized. Or due to the above-described problems using a hollow ball-type titanium oxide, it is not practically applied to a production site, and is also limited to a small-scale facility even if it is actually applied. This is activated by the irradiated light energy in order to maintain the high pollutant decomposition efficiency of the photocatalyst, the activated photocatalyst should play a role of decomposition of the pollutant in the water quality. However, the titanium oxide photocatalyst used today has a small contact area between a portion suspended on the surface of the water or fixed in the water and activated by the irradiated light and a portion which decomposes the actual contaminants in the water. . That is, while the upper surface portion of the photocatalyst suspended on the water surface is activated by the irradiated light, the photocatalytic portion submerged in the water surface is less activated because the amount of light irradiated is small. Therefore, the upper surface and the surface portion of the surface of the contaminants are actively decomposed by the activated photocatalyst, but the contaminants inside the water surface are not properly decomposed, and thus there is a problem that the efficiency is lowered.

In addition, unlike the above-described embodiment, another embodiment using a titanium oxide photocatalyst conventionally used includes a device in which a glass tube is spirally manufactured and the titanium oxide is immobilized on the inner wall of the glass tube. However, such a device also has a problem that the contaminants are in short contact with the titanium oxide photocatalyst on the inner wall of the glass tube, so the treatment effect is extremely insignificant. In addition, the light transmittance decreases due to the contaminants passing through the glass tube, so the amount of light reaching the inner wall is insufficient. Therefore, sufficient activity as a photocatalyst is not achieved. have.

Accordingly, an object of the present invention is to provide a water pollution purification apparatus equipped with an economical titanium oxide photocatalyst coating film by decomposing contaminants without the need for separate recovery.

Another object of the present invention is to provide a water pollution purification device having a higher decomposition efficiency by being semi-submersible and rotating as photocatalyst activated by light energy decomposes pollutants in the water quality.

In addition, another object of the present invention is to provide a water pollution purification apparatus that is configured to rotate to allow oxygen existing in the air to be introduced into the water quality, thereby further improving the oxidation ability of organic matter.

1-a view showing a first embodiment of a water pollution purification apparatus according to the present invention.

2 is a view showing a second embodiment of the water pollution purification apparatus according to the present invention.

Figure 3 shows a third embodiment of the water pollution purification apparatus according to the present invention.

Figure 4 shows a fourth embodiment of the water pollution purification apparatus according to the present invention.

5 is a diagram showing a decomposition graph of trihalomethane using the device of the present invention.

Figure 6 is a diagram showing an exploded graph of off-flavor substances using the present invention device.

7-shows a chlorophyll a decomposition graph using the device of the present invention.

8- is a diagram showing an exploded graph of trihalomethane when the rotational speed of the plate-like member of the present invention is varied.

Figure 9-Chlorophyll a, odor substance decomposition graph when the rotational speed of the plate-shaped member of the present invention different.

10 is a view showing the decomposition efficiency by the device and the conventional device.

* Explanation of symbols for the main parts of the drawings *

10: plate member 20,20 ': power transmission means

30,30 ': light irradiation means 40: reflector

50: buoyancy member 50 ': support member

The present invention for achieving the above object is, the outer surface is coated with a titanium oxide photocatalyst coating film, the pollution purification means is rotated to widen the contact area with contaminants; and the power to transfer the rotational power to the pollution purification means; Delivery means; And light irradiation means for inducing photochemical activity of the pollution purification means; Provided is a water pollution purification apparatus using a rotating member equipped with a titanium oxide photocatalyst coating film is activated by the light irradiation means, and rotated by the power transmission means to purify the pollutants in contact with the pollutants. There is a technical point to this.

In addition, the contamination purification means, a plurality of plate-like members are installed in parallel, one side of each plate-like member is exposed to the air, the other side is to be formed to rotate in the liquid phase. The plate member may include metals of copper, platinum, aluminum, gold, zinc and iron; Photoactive materials of silicon oxide, zinc oxide, silicon carbide, tungsten oxide, cadmium sulfide, gallium arsenide, copper monoxide and copper dioxide; It is preferable to further include any one or more of the coating film is formed.

On the other hand, the power transmission means is preferably made of a motor, or made of a rotary blade that rotates by natural wind. The light irradiating means is preferably made of natural light or made of UV lamps, and further comprising a reflecting plate for reflecting light by the UV lamps.

Next, the present invention will be described in more detail with reference to the drawings showing preferred embodiments of the present invention configured as described above.

1 is a view showing an embodiment of a water pollution purification apparatus according to the present invention. As shown in the drawing, the present invention consists of a pollution purification means 10 for greatly purifying water pollution, and a power transmission means 20 and a light irradiation means 30 for transmitting power to the pollution purification means 10.

The contamination purification means 10 is composed of a plate-like member 10 coated with a titanium oxide coating film on the surface of the circular glass disk. Briefly describing the process of forming the coating film used in the present invention, first, the circular glass disk was washed with potassium dichromate and dried in a dry oven, then coated with a sol-gel method and heat treated at 500 ° C. for about 4 hours. It was prepared by. The titanium oxide coating film was used in the form of a bead phase, and since the details are well known in the art, a detailed description thereof will be omitted. And the amount of titanium oxide consumed by the coating is extremely small. That is, since the amount of titanium oxide used in one coating is about several micrograms, it is consumed only in the order of tens of thousands compared to conventional powdered titanium oxide. And, the larger the amount of titanium oxide that induces photoactivity, the faster the decomposition of contaminants, and the amount of coral titanium contained in the coating film is possible by adjusting the number of coatings. Usually, about 2 to 5 times is preferable, and when the coating is too much, the thickness of the coating film becomes so thick that the photoactivity may be rather deteriorated by the cloudiness, so it is preferable not to apply 7 times or more.

On the other hand, since the site for decomposing contaminants present in the waste water is the surface of the plate member 10 coated with a titanium oxide coating film, the larger the surface area of the plate member 10 is effective. Therefore, although shown as a plate-like member in the present embodiment, it can be seen that it is not limited thereto. Various shapes such as cylindrical or conical shapes are possible, and the surface may have a concave-convex structure in order to increase the unit surface area. And, the plate member 10 is composed of a plurality so that the contact area with the waste water as the source of contamination to the maximum.

Further, copper, platinum, aluminum, gold, zinc, iron, and manganese oxide may be added to the titanium oxide coating layer by adding a metal and a photoactive material such as SiO ₂ , ZnO, SiC, WO ₃ , CdS, GaAs, CuO, CuO _2, and the like. The treatment efficiency may be increased by increasing or assisting the optical activity of the titanium oxide. The increase in photoactivity by the addition of these materials has already been shown in many papers and data and is well known in the art, so the detailed description thereof will be omitted.

Then, the plate member 10 is to be installed in a semi-submersible. That is, one side of the plate member 10 is to be located in the atmosphere, the other side is to be located in the waste water. This is to induce the activation of the photocatalyst for the smooth decomposition of the contaminants present in the waste water, and to enable the decomposition of the pollutants smoothly by activating the widened contact area with the waste water. That is, after the coating film portion existing in the atmosphere is activated by the direct contact of the light energy, the activated portion is in contact with the waste water as it is moved into the waste water by rotation so that the decomposition of the pollutant is made.

Next, the power transmission means 20 will be described. The power transmission means 20 is to transmit the power to the plate member 10 so that the plate member 10 is rotated. By the rotation, the plate member 10 is exposed to the atmosphere and the activated portion is delivered to the waste water so that the decomposition of the pollutant is made continuously. The power transmission means 20, the support 22 is connected to the plate member 10, and the power transmission source 20 for rotating the support 22. The power transmission means may consist of a motor 20 that is simply installed on one side of the support to allow the plate member 10 to rotate as the support 22 is rotated by the power transmission of the motor 20.

On the other hand, the power transmission source, as shown in Figure 2, may use natural wind power. That is, the rotary support 24 'is connected to one side of the support 22', and may have a structure in which the rotary blade 26 'is installed on the upper end of the rotary support 24'. In addition, the connection portion of the support 22 'and the rotary support 24' allows power to be transmitted to the support 22 'by the rotation of the rotary blade 26' using a gearing structure of the gear. Therefore, the rotation of the plate member 10 by the rotation of the rotary blades 26 'by natural wind may be configured to prevent the loss of energy for a separate power transmission.

Next, the light irradiation means 30 will be described. The light irradiation means 30 is for irradiating light energy for activating the titanium oxide photocatalyst, and it is sufficient to have a wavelength of 400 nm or less suitable for the photoactivity of titanium oxide. To this end, it is composed of natural light 30 'or UV lamp 30 and xenon lamp. In addition, when using a UV lamp 30 or the like in addition to the natural light 30 ′, it is preferable to provide a separate reflector 40 to increase energy efficiency. Therefore, the light energy irradiated from the artificial light irradiation means such as the UV lamp 30 is transferred to the plate member 10 by the reflecting plate 40 to prevent the loss of the electric energy used to the maximum.

On the other hand, as shown in Figures 1 and 2, in this embodiment the water pollution purification apparatus is supported by the buoyancy member (50). The buoyancy member 50 not only allows the water pollution purification device to maintain a floating state on the water surface, but also enables movement. Therefore, not only can be easily moved from a large area to a heavily polluted area, but can also be moved within a large water source to effectively purify pollutants. However, instead of the buoyancy member 50, as shown in FIG. 3, it is also possible to fixally install at a specific place by using a separate support member 50 ′. The key point in the present invention is that the plate-like member 10 coated with a titanium oxide photocatalyst coating film is positioned on both sides of the atmosphere and the surface of the water so that the titanium oxide coated portion activated by rotation is continuously in contact with the pollutant. It is aimed at increasing the contact area of the pollutants so that pollution purification activities can be actively carried out. Therefore, it can be seen that the installation of the water pollution purification apparatus can be installed in various forms.

Next will be described the operation by the present invention by the configuration as described above.

First, the light energy irradiated by the natural light 30 ′ or the UV lamp 30 is transmitted to one side of the plate member 10 exposed to the atmosphere. Activation of the individual titanium oxide photocatalysts is accomplished by the transferred light energy. And, at this time, the other side of the plate member 10 is locked under the water surface is less light energy transmitted is less active. In the above state, the plate member 10 is rotated by the power transmitted by the motor 20 or the natural wind 20 ', so that the activated part reaches the water surface and comes into contact with the surface. Will be decomposed. The active energy is lost by the decomposition and then moved back to the surface of the water, and is reactivated by the light energy, thereby enabling continuous pollutant decomposition. On the other hand, the progress of the oxidative decomposition reaction according to the activation of the photocatalyst is made in a very short time (light transmission and electron, hole generation time is about ^10-5 seconds), the faster the rotational speed of the plate member 10, the faster the decomposition efficiency Increases. In addition, as the rotational speed increases, the contact area between the contaminant and the plate member 10 increases, so that the decomposition efficiency is improved, and the underwater water supply of oxygen present in the air is caused by the rotation of the plate member 10. Because it is smooth, even if a separate oxidant is not added, it promotes oxidation of pollutants.

On the other hand, when the surface of the coating film is contaminated with contaminants with a long time use, there is no need to replace the device itself. In other words, the contaminants can be removed by simply scouring or washing. This is because the titanium oxide coating film is firmly adhered to the glass surface, so that damage to the titanium oxide coating film can be prevented even when mopping with a mop or the like. Therefore, the device according to the present invention can be used semi-permanently.

Next, an embodiment of the present invention will be described.

For the experiment of the present invention, various experiments were performed by implementing the apparatus as shown in FIG. 4 and the results will be described. As shown, a plurality of plate member 10 is connected by a support in the reactor 60 of the batch type 2.5L of the tank for the experiment, the support is controlled by a motor (not shown) to control the rotational speed The experiment was carried out. As the light irradiation means, a 10W UV lamp 30 having a small amount of power consumption was used.

Experimental items included carcinogenic chlorine by-product trihalomethane, odorous substance geozmin (C ₁₂ H ₂₂ 0: trans-1,10-dimethyl-trans-9 decaol) and 2-M-Ivy (C ₁₁ H ₂₀ O: 2-methyl-iso-borneneol), general bacteria, the number of E. coli and chlorophylla indirectly know the algal concentration and microcystine, a cyanobacteria toxin, were measured, respectively. In addition, all experiments were analyzed according to the Water Pollution Process Test, the Japanese Waterworks Test, and the Standard Methods. For the organic matter and the products contained in the sample, a gas chromatography mass spectrometer (GC / MSD: Bearion) was used. Product name Star 3400CX) was analyzed and confirmed. In this experiment, a device with seven plate members having a diameter of about 15 cm was used. The coating film of each plate member was applied twice, and the rotational speed was a test value under 24 RPM as a reference value.

(1) trihalomethane removal efficiency; Trihalomethane is rarely removed in the present advanced water treatment process using ozone and granular activated carbon. ₅ shows a decomposition graph and its analysis (using a gas chromatography mass spectrometer) over time of chloroform (CHCl ₃ ) and dichlorobromethane (CHCl ₂ Br), which occupy a relatively large amount in trihalmethane. As shown, it can be seen that after about 60 minutes, trihalomethane is decomposed in a large amount and almost decomposed after about 120 minutes.

(2) Off-flavor removal efficiency: Recently, various river water and water purification plants have a large amount (450cell / ml) of Anabaena sp, which is a off-flavor algae species. Even through activated carbon, the removal efficiency was only about 50%. However, as shown in Figure 6, it can be seen that the removal efficiency of about 70 to 80% after about 60 minutes by using the present invention by collecting the precipitated water in the middle stage of the water purification process, and after 120 minutes It can be seen that decomposition takes place.

(3) Chlorophyll a removal efficiency: Figure 7 shows the chlorophyll a concentration change indirectly knowing the algae concentration of river water in front of Noksan hydrologic gate in Gangseo-gu, Busan. As shown, it gradually shows a decrease in the initial 117ppb, after about 180 minutes it can be seen that the drop to 58ppb shows a removal efficiency of about 50%.

(4) Removal efficiency of general bacteria and E. coli

Although not shown in the graph, the experiment was carried out by using the device according to the present invention, which was prepared by mixing an appropriate amount of stream water taken from the water of Nakdong River in July 1999 and the sewage of Sasang-gu electric shock basin in Busan. As a result, the general bacteria were found to be killed after 10 minutes in the initial 2079, E. coli was initially positive, but all were killed after 10 minutes.

To summarize the experiment briefly, (1) trihalomethane, which is a hardly decomposable substance, was removed by 95% at 60 minutes of reaction time, and nearly 99% was removed after 120 minutes, which was not treated in the advanced water treatment process. It can be seen that this material is almost completely removed. And, (2) the off-gas removal efficiency in the actual water treatment plant process is confirmed around 50%, using the device according to the present invention can be seen that a high removal efficiency of about 70 to 80% for 60 minutes. (3) The concentration of chlorophylla, which can indirectly check algae concentration, also decreased gradually during the reaction time. (4) It can be seen that both general bacteria and E. coli are killed after about 10 minutes.

Next, as described above, it can be seen that as the plate member rotates at a higher speed, the photoactive portion has a larger contact area with the contaminant, and the oxygen supply amount is increased, thereby increasing the decontamination efficiency. Let's look at the result.

8 is a diagram showing a decomposition result of trihalomethane. The above results are the results of experimenting with the rotational speed of the plate-like member to 260 RPM. That is, the comparison result of the case of irradiating the UV lamp with only the UV lamp is irradiated for comparison and the plate member rotation speed of the device to 260 RPM.

As shown, the chloroform of (1) shows a slight decomposition effect when only the u-lamp is irradiated, which may be due to the light energy of the u-lamp itself. However, according to the present invention, it can be seen that after about 10 minutes all degradation. Comparing with the graph of Figure 5 experimented with the 24RPM described above, it can be seen that the decomposition effect is more excellent as the rotational speed is increased. This is because, as described above, the contact increase of the photoactive portion and the smoother oxygen supply are caused. And in the case of the dichlorobromethane of (2) it can be seen that after about 10 minutes all decompose, which is also more effective when compared with FIG.

9 is a diagram showing the removal efficiency of chlorophylla which can indirectly check the amount of algae toxin microcystine and algae using a plate member rotated at 260 RPM. All.

This experiment is the result of experiment of batch lyophilized cyanobacteria into batch distilled water artificially. In addition, since only the initial concentration and two concentrations after 180 minutes were measured and expressed, the change in the middle portion was simply illustrated in a linear graph, but if more results were checked per hour than in actual form, they may appear in a parabolic form. In any case, the results of the chlorophyll-a, as shown, the removal efficiency of about 83.3% to 40ppb after 180 minutes at an initial concentration of 240ppb. Comparing this result with FIG. 7 tested at 24 rpm, it can be seen that the removal efficiency of chlorophyll increases by about 33% as the rotational speed of the plate member increases. In addition, it can be seen that after the reaction time of 180 minutes at 2.518ppb for M-RR, 3.89ppb for M-LR, which is one type of microcystin, which is an algae toxin substance.

10 is a graph showing a comparison of various forms of titanium oxide and contaminant removal efficiencies of the apparatus according to the present invention and conventionally used. This experiment was prepared by using 10ppb of concentration of odorous substances, the apparatus according to the present invention was to maintain the rotational speed of 24rpm, and the coating film was used as a plate member coated twice. G is UV lamp, Pw is titanium oxide powder, POD is the device of this invention, H-Bead is hollow ball, Pellet is glass grain.

As shown, only the light irradiation by the UV lamp (G) and the titanium oxide-coated hollow ball (H-Bead) and the glass pellet under the UV lamp were effective at 120.98 minutes after the reaction time. Insignificant%, 36.02% and 36.57%, while the POD was 97%. The suspension was 89.1% at 50PPM and 98.8% at 100PPM. According to the above results, the present invention shows higher removal efficiency than 50PPM suspension, but shows a similar result to 100PPM suspension. However, the apparatus of the present invention shows a case where it is applied with two coatings, and the amount of titanium oxide used in the two coatings is only used in the order of millions of parts than in the case of suspension. Therefore, even though a smaller amount of titanium oxide is used, it shows a higher removal efficiency and thus is more effective than a suspension, and the more coatings, the more effective it can be seen. As described above, since the higher the rotational speed, the more effective the rotational speed is.

As described above, it can be seen that the water pollution purification apparatus according to the present invention is excellent in decomposing pollutants, and the removal efficiency is increased depending on the number of times of coating, size, number, and rotation speed of the coating film to increase the contact area with the pollutants. It can be seen that the difference, but fundamentally superior to the conventional suspension, hollow ball and pellet form. Therefore, it can be seen that the apparatus according to the present invention is applicable to various fields. For example, the killing of Legionella bacteria in the cooling towers of large buildings, the removal of secondary pollutants from tap water, such as large building reservoirs and rooftop tanks, the removal of common bacteria and Escherichia coli, and the suppression of algae growth and deodorant algae By-product decomposition such as toxins, killing of Vibrio bacteria in large tanks (seafood reproduction), sterilization and disinfection of swimming pools, sterilization and disinfection in liver and water, advanced treatment of sewage, advanced treatment of water, as well as softening of domestic sewage and industrial water Applicable to all water quality such as treatment. In addition, the conventional powder and hollow balls are not applicable to the air pollution purification facility by increasing the photoactivity and the contact area due to rotation, but the present invention can be installed in a predetermined place by using a rotating member of a predetermined size. It can be seen that it is also applicable to pollution purification facilities.

According to the present invention, a rotating member coated with a titanium oxide coating film has a large surface area, and when it is used for water treatment such as a reservoir and a sewage treatment plant, it is configured as semi-submersible and can be applied as it is even in general atmosphere. In addition to being applicable to both air and air, maximizing the contact area with the material to be treated by increasing the rotation speed has the effect of improving efficiency.

In addition, when used in water treatment, there is another effect of increasing the strong oxidizing power by generating an aeration effect in which air in the air is introduced into the water due to rotation.

In addition, there is no need for additional facilities such as a powdered titanium oxide recovery device, miniaturization is possible, and can be manufactured according to the size of the facility, so it is suitable for large-capacity processing, and can be installed at any place.

If the surface of the coating film is contaminated by prolonged use, it can be removed by simply separating and cleaning, so there is another effect that can be easily reused and used semi-permanently.

Claims (8)

A pollution purification means whose outer surface is coated with a titanium oxide photocatalyst coating film and rotated to widen the contact area with contaminants; Power transmission means for transmitting rotational power to the pollution purification means; And Including light irradiation means for inducing photochemical activity of the pollution purification means; Water pollution using a rotating member equipped with a titanium oxide photocatalyst coating film, characterized in that the titanium oxide coating film is activated by the light irradiation means and is rotated by the power transmission means to purify the pollutants in contact with the pollutants. Purifier. The titanium oxide photocatalyst coating film according to claim 1, wherein the contamination purification means has a plurality of plate members installed in parallel, one side of each plate member is exposed to air, and the other side is rotated by being located inside the liquid phase. Water pollution purification device using a rotating member provided. The method of claim 2, wherein the plate member, Metals of copper, platinum, aluminum, gold, zinc and iron; Photoactive materials of silicon oxide, zinc oxide, silicon carbide, tungsten oxide, cadmium sulfide, gallium arsenide, copper monoxide and copper dioxide; Water pollution purification device using a rotating member provided with a titanium oxide photocatalyst coating film, characterized in that the coating film is formed further comprising any one or more of the above. The method of claim 1 or 2, wherein the power transmission means, Water pollution purification device using a rotating member provided with a titanium oxide photocatalyst coating film, characterized in that consisting of a motor. According to claim 1 or claim 2, The power transmission means, water pollution purification apparatus using a rotating member provided with a titanium oxide photocatalyst coating film, characterized in that consisting of a rotary blade rotating by natural wind. The water pollution purification apparatus according to claim 1 or 2, wherein the light irradiation means is made of natural light. The water pollution purification apparatus according to claim 1 or 2, wherein the light irradiation means comprises a UV lamp. 8. The apparatus of claim 7, wherein the light irradiating means further comprises a reflecting plate for reflecting light from the UV lamp.