KR20110058999A - Unit for purifying polluted water or liquid or gas using ultraviolet and device for purifying polluted water or liquid having the same - Google Patents

Abstract

PURPOSE: An ultraviolet ray-based treating unit and a water treating apparatus including the same are provided to effectively treat contaminants and pathogenic microorganism in contaminated raw water and gas by maximizing the generation of hydroxyl radial. CONSTITUTION: An ultraviolet ray-based treating unit(50) includes an ultraviolet ray-based treating tank. A hollow sleeve(521) is installed in the ultraviolet ray-based treating tank. An ultraviolet ray lamp(52) is installed in the sleeve and radiates ultraviolet ray. An oxygen gas supplying unit supplies oxygen gas into a space between the sleeve and the ultraviolet ray lamp. An ozone gas supplying unit moves between the sleeve and the ultraviolet ray lamp and supplies ozone gas generated from the ultraviolet ray into the ultraviolet ray treating tank.

Description

Unit for purifying polluted water or liquid or gas using ultraviolet and device for purifying polluted water or liquid having the same}

The present invention relates to an ultraviolet treatment unit and a water treatment apparatus including the same, and more particularly, to an ultraviolet treatment unit for purifying contaminated raw water or gas by using ultraviolet rays and a water treatment apparatus including the same.

Pollution of water sources and rivers due to organic toxic compounds, pesticides, etc. discharged from various industries has emerged as a major problem around the world, and accordingly, interest in water treatment devices and water treatment methods is increasing day by day. In particular, there is an increasing interest in the sterilization treatment of aquatic microorganisms.

In the conventional water treatment apparatus, ozone is widely used as an alternative to suppression of trihalomethane (THM) generation, a by-product of chlorine disinfection, and the water treatment apparatus using the ozone-based advanced oxidation process is disclosed in Korean Patent Nos. 320,604 and 454,260. It is designed in various forms on the back.

However, a water treatment apparatus using an ozone-based advanced oxidation process requires a fairly large reactor to sufficiently secure the reactivity of ozone, and in particular, there is a limit to secure a sufficient reaction time. As a result, in the conventional water treatment apparatus for the advanced oxidation process using ozone, a large device installation area is required, and there is a problem in that the operation of the device is expensive.

On the other hand, ozone reacts very selectively with organic materials, such as slow reactions with most organic materials (saturated hydrocarbons such as Geosmin, MIB and THM, pesticides, etc.) or no reaction at all, and processes such as pH, temperature and inorganic salts in water. Factors are known to have great drawbacks, such as being greatly affected by their oxidative capacity. In an effort to overcome the drawbacks of ozone, an ultraviolet-based advanced oxidation process water treatment apparatus has been developed. A water treatment apparatus using such ultraviolet rays is disclosed in Korean Patent No. 419,828.

However, the water treatment apparatus disclosed in Korean Patent No. 419,828 has the following problems.

First, the inorganic and organic components in the water cling to the inner wall of the water treatment pipe line, thereby obstructing ultraviolet transmission. Then, after gradually depositing various microorganisms, a biofilm having a predetermined thickness is formed on the inner wall of the water treatment pipeline by microbial organisms and secretions, making it difficult to obtain a treatment effect by ultraviolet rays.

Second, ozone is formed by ultraviolet rays of oxygen in the air, and the ozone formed is discharged into the atmosphere without any filtration process, which causes adverse effects on the human body. As is well known, even when ozone of 0.1 ppm or more is present in the atmosphere, prolonged exposure to ozone causes various respiratory diseases such as asthma.

Third, nitrogen gas in the air becomes nitrogen oxides by ultraviolet rays. Nitrogen oxides, as is well known, are harmful to the human body, and when they encounter moisture, they are converted to nitric acid and form acid rain.

The present invention has been made to solve the above problems, an object of the present invention is to contaminated raw water by maximizing the generation of oxidative hydroxyl radical (Hydroxyl Radical, OH. In addition to treating pollutants and pathogenic microorganisms contained in the gas more effectively, ozone gas can be formed through the reaction of ultraviolet rays and oxygen gas without using a separate ozone gas source, and the ozone gas formed can be used to treat contaminants and pathogenic microorganisms. In addition, to provide an ultraviolet treatment unit and a water treatment apparatus including the same, the structure is improved to prevent the generation of additional pollutants such as nitrogen oxides when forming ozone gas by ultraviolet irradiation.

In order to achieve the above object, the ultraviolet treatment unit according to the present invention is a ultraviolet treatment tank; A hollow sleeve installed inside the ultraviolet treatment tank; An ultraviolet lamp disposed inside the sleeve to irradiate ultraviolet rays; Oxygen gas supply means for supplying oxygen gas between the sleeve and the ultraviolet lamp; And ozone gas supply means for supplying the ozone gas to flow between the sleeve and the ultraviolet lamp and to supply a gas containing ozone gas formed by the ultraviolet light into the ultraviolet treatment tank.

In addition, the water treatment apparatus according to the present invention includes a pump for pumping raw water to be treated; An ultraviolet treatment unit for introducing the transported raw water and treating the raw water by irradiating the introduced raw water with ultraviolet rays; Raw water outflow control module for adjusting at least one of the flow rate and the flow rate of the raw water flowing into the ultraviolet treatment unit; And a controller for controlling the operation of the raw water discharge control module, wherein the ultraviolet treatment unit comprises: an ultraviolet treatment tank; A hollow sleeve installed inside the ultraviolet treatment tank; An ultraviolet lamp disposed inside the sleeve to irradiate ultraviolet rays; Oxygen gas supply means for supplying oxygen gas between the sleeve and the ultraviolet lamp; And ozone gas supply means for supplying the ozone gas to flow between the sleeve and the ultraviolet lamp and to supply a gas containing ozone gas formed by the ultraviolet light into the ultraviolet treatment tank.

According to the present invention, it is possible to form a large amount of oxidizing ozone gas as well as oxidizing hydroxyl radical (OH ·) by ultraviolet light, and the raw water or gas contaminated using the formed hydroxyl radical and ozone gas Effectively treat contaminants and pathogenic microorganisms contained in.

In addition, since ultraviolet rays are irradiated only to oxygen gas, no additional contaminants such as nitrogen oxides are generated.

In addition, even if foreign matters or various contaminants are attached to the outer circumferential surface of the sleeve, it can be effectively cleaned, so that the ultraviolet rays can be effectively irradiated between the sleeve and the ultraviolet lamp or inside the ultraviolet treatment tank.

In addition, since the user can adjust the pH of the water introduced into the ultraviolet treatment tank, hydroxyl radicals can be formed more effectively to more effectively purify contaminated water or gas.

1 is a schematic configuration diagram of a water treatment apparatus according to an embodiment of the present invention, Figure 2 is a schematic block diagram illustrating a control process of the water treatment apparatus shown in Figure 1, Figure 3 is shown in Figure 1 Is a detailed view of the ultraviolet treatment unit.

1 to 3, the water treatment apparatus 100 of the present embodiment includes a pump 10, a filtration tank 20, a buffer tank 30, a raw water discharge control module 40, and an ultraviolet treatment unit. 50, a hydrogen ion concentration adjusting unit 60, a raw water storage tank 70, a valve 80, and a controller 90 are provided.

The pump 10 pumps raw water, which is to be treated, for example, contaminated water or wastewater. The pump 10 is installed at the front end of the filtration tank 20 and operates so that raw water flows into the filtration tank 20.

The filtration tank 20 is fed with the raw water conveyed by the pump 10, the introduced raw water is filtered out of the filtration tank 20 and then flows out of the filtration tank. Inside the filtration tank 20, a filter (not shown) capable of filtering raw water is provided. The filter is preferably provided with a giant filter for primarily filtering the giant suspended substances or microorganisms present in the raw water and a coarse filter for secondaryly filtering the giant suspended substances or microorganisms. The filtration performance is adjusted according to the filter, and in order to prevent clogging of the filter in advance, it is preferable to periodically replace the filter or periodically wash the filter. In particular, a separate filter cleaner (not shown) should be provided to clean the filter.

The buffer tank 30 is connected to the filtration tank 20 through the connection line (1). The raw water filtered by the filtration tank 20 flows into the buffer tank 30, and the stored raw water flows out of the buffer tank 30. Outflow of raw water may be achieved by the operation of a pump (not shown) installed separately. In addition, when the raw water in the buffer tank 30 is stored above a certain level, an outlet (not shown) may be formed in the buffer tank 30 at a predetermined level so that the stored raw water may flow out naturally. On the other hand, the buffer tank 30 may not be provided if necessary, when the buffer tank 30 is provided, the buffer tank 30 is to maintain the raw water above a certain level so that the raw water can be discharged at a constant flow rate Function as a buffer.

Raw water outflow control module 40 adjusts at least one of the flow rate and flow rate of the raw water flowing out from the buffer tank (30). Raw water outflow control module 40 may be composed of a mass flow controller (Mass Flow Controller) disclosed in the Republic of Korea Patent Publication No. 2008-81464 or an electronic valve capable of electronically controlling the flow, such as the mass flow controller If the solenoid valve is configured, it is possible to control both the flow rate and the flow rate of the outflowing raw water. The raw water outflow control module 40 may be directly coupled to the buffer tank 30, or may be coupled to a connection line 2 connecting the buffer tank 30 and the ultraviolet treatment tank 51 to be described later. Meanwhile, in some cases, the buffer tank 30 may not be provided. In this case, the raw water outflow control module 40 is coupled to the pipe connecting the filtration tank 20 and the ultraviolet treatment tank 51.

Raw water outflow control module 40 is the inner circumferential surface of the connection line (2) or the ultraviolet treatment tank 51 to be described later, in particular the inner surface of the inner tank is corroded by the intense raw water flowing from the filtration tank 20 or the sleeve (described later) 521 is prevented from being broken. In addition, the raw water outflow control module 40 serves to allow the raw water to flow out evenly to the UV treatment tank 51.

The ultraviolet treatment unit 50 is for treating the raw water by irradiating the ultraviolet light to the raw water. The ultraviolet treatment unit 50 includes an ultraviolet treatment tank 51, an ultraviolet lamp 52, an oxygen gas supply means, an ozone gas supply means, a cleaning member 55, and a driving means (not shown). .

The raw water in which the flow rate and flow rate are controlled is introduced from the raw water discharge control module 40 into the ultraviolet ray treatment tank 51, and the ultraviolet ray is irradiated from the ultraviolet ray treatment tank 51 to purify the raw water. The ultraviolet treatment tank 51 is composed of a double structure, in particular the outer tank 511 and the inner tank 512 disposed inside the outer tank. The outer tank 511 is made of metal or reinforced plastic material. The inner tank 512 has an inlet port 512a through which raw water flows in and an outlet port 512b through which raw water flows out. The inlet port 512a and the outlet port 512b are formed to protrude outside the outer tank 511. And, the connection line 2 for connecting the buffer tank 30 and the ultraviolet treatment tank 51 is coupled to the inlet port (512a), and thus the raw water controlled flow rate and flow rate is introduced into the inner tank (512). . In addition, the connection line 3 is also coupled to the outflow port 512b, and thus the stored raw water is discharged after the ultraviolet treatment. The inner tank 512 is preferably made of a metal material, in particular a metal material such that ultraviolet rays can be reflected well, for example, made of aluminum or stainless steel or titanium dioxide, or a metal material including any one of them.

The ultraviolet lamp 52 is installed inside the ultraviolet treatment tank 51. In particular, most of the ultraviolet lamp 52 is disposed inside the inner tank 512, the end of the ultraviolet lamp 52 protrudes from the inner tank 512 between the outer tank 511 and the inner tank 512. Is placed. At the end of the ultraviolet lamp 52, a terminal for applying power is formed, and the terminal is preferably disposed outside the inner tank 512 in which raw water is stored, which is short-circuit when the raw water itself or the reaction between the raw water and the ultraviolet ray occurs. This is to prevent problems such as failure or malfunction.

The ultraviolet lamp 52 is formed long in one direction and irradiates ultraviolet rays. In particular, it is preferable that the ultraviolet lamp 52 is comprised with the vacuum ultraviolet ray lamp which irradiates a vacuum ultraviolet ray. Ultraviolet rays are generally classified into UV-A, UV-B, and UV-c by wavelength, and have wavelengths of 320 to 400 nm, 280 to 320 nm, and 254 to 280 nm, respectively, and vacuum ultraviolet rays have smaller wavelengths than general ultraviolet rays, 155 to 260 nm. Becomes However, the wavelength at which water molecules are decomposed corresponds to 190 nm. Therefore, in order to decompose water molecules more effectively, it is preferable to irradiate ultraviolet rays, that is, vacuum ultraviolet rays, having a wavelength of about 190 nm. Vacuum ultraviolet rays simultaneously treat organic substances such as microorganisms remaining in raw water and organic substances such as harmful compounds.

The vacuum ultraviolet ray lamp 52 generally has a wavelength range of 150 nm to 260 nm, and the highest wavelengths having the highest energy intensity may be about 172 to 185 nm and 254 nm. In particular, the wavelength band of 172nm to 185nm is the wavelength band that the water molecules absorb most effectively, and the vacuum ultraviolet rays of such wavelength band can effectively decompose the water, thereby decomposing the water to generate radical species with high reactivity. Therefore, in addition to the strong irradiation of ultraviolet rays, these radical species have a strong synergistic effect in sterilizing or disinfecting organisms such as microorganisms in raw water or destroying or removing organic contaminants contained in raw water. This is due to the physical and chemical properties of the water molecules in the aqueous solution, and originates from the reaction mechanism of the water molecules by the vacuum ultraviolet light energy described below. Water molecules are decomposed at wavelengths of 190 nm or less, which are vacuum ultraviolet rays, and are changed as shown in <Scheme 1> to <Scheme 3>.

H ₂ O + VUV → OH + H

H + O ₂ → HO ₂ ㆍ

HO ₂ and ↔ O ₂ ^- and H + ⁺

In addition, in this wavelength range, reaction with oxygen gas is accompanied, and further synergistic effect can be expected. That is, the oxygen gas is decomposed triplet ^{(triplet, O (3 P)} ) with the oxygen atoms singlet ^{(singlet, O (1 D)} ) of oxygen atoms by participating in the reaction by absorbing light energy of the vacuum ultraviolet region, and the resulting These oxygen atoms are again reacted with oxygen gas to change as shown in <Scheme 4> to <Scheme 5> to generate ozone gas. Here, the oxygen gas may be dissolved in raw water and may be supplied to the ultraviolet lamp 52 and the sleeve 521 by the oxygen gas supply means described later.

O ₂ + VUV → O ( ³ P) + O ( ¹ D)

O ₂ + O ( ³ P) → O ₃

As described above, in the reaction process according to <Scheme 1> to <Scheme 5>, various radical species having excellent reactivity are produced. Namely hydroxyl radical (hydroxyl radical, and OH), hydro-peroxy radical (hydroperoxyl radical, HO ₂ and), superoxide anion radical (superoxide anion radical, O ₂ ^- and), singlet oxygen atoms and triplet oxygen, ozone Is generated. These radical species, together with the vacuum ultraviolet light energy, sterilize or destroy microorganisms in raw water, and at the same time, effectively decompose organic contaminants.

In addition, ozone gas is generated in addition to the above excellent effects, and the generated ozone gas exhibits a significant synergistic effect with the radical species. This is attributable to the physicochemical properties of ozone in aqueous solution, which originates from the reaction mechanism of ozone in water described below. Ozone is changed in water as in <Scheme 6> to <Scheme 9> below.

^{_{O 3 + OH - → O 2}} - and O ₂ + H ⁺ +

O ₃ + O ₂ ^- and → O ₃ ^- + O ₂ and

O ₃ ^- and O → ^- + O ₂ and

O ^- and H ⁺ + OH ↔ and

At this time, the second reaction rate constant of <Scheme 6> is about 70 M ⁻¹ s ⁻¹ , which means that the reaction of <Equation 6> is very slow as an initial reaction. In addition, the superoxide anion radical (O ₂ ⁻ ·) generated in <Scheme 6> reacts with ozone as in <Scheme 7>, wherein the second rate constant constant is 1.52 × 10 ⁹ M ⁻¹ s ⁻¹ , which means that the reaction of Scheme 7 occurs within a very short time. In addition, in the reaction of <Scheme 7>, the presence form and the fate of the superoxide anion radical are in equilibrium relation (pK _HO2 = 4.8) according to the pH value in water as in <Scheme 3>. In other words, the reaction of <Equation 3> is different in the degree of predominant reaction and reverse reaction depending on the acid-base equilibrium according to the pH. For example, pH 4.8 or less in the forward reaction is dominant mainly in the hydro-peroxy radical (hydroperoxyl radical, and HO ₂₎ are present one, pH 4.8 over the reverse reaction is dominant mainly exists shooter oxide anion radicals. Eventually, when the pH is 4.8 or more, a large amount of superoxide anion radicals are present, and the superoxide anion radicals are converted into a strong oxidizing radical, which is a strong oxidant, through the reactions described in the previous schemes, thereby effectively treating raw water. Will be.

<Scheme 6> to <Scheme 9> show a reaction in which a strong oxidizing radical (hydroxyl radical, OH) is produced by rapid reaction between ozone and superoxide anion radical.

In addition, <Reaction formula 2> and <Scheme 3> is formed as in the hydro-peroxy radical and superoxide according to the disproportionation reaction (disproportionation) between the anion radical HO ₂ and about HO ₂ and and HO ₂ and for O ₂ ^- between and When the reactions occur relatively quickly, reactions such as <Reaction Scheme 10> and <Reaction Scheme 11> occur to generate hydrogen peroxide (H ₂ O ₂ ). On the other hand, O ₂ ^- and for O ₂ ^- and is very slow reaction between almost negligible.

HO ₂ ㆍ + HO ₂ ㆍ → H ₂ O ₂ + O ₂

And HO ₂ + O ₂ ^- and ^{_{+ H + → H 2 O 2}} + O 2

Through such reactions, hydrogen peroxide plays a very important role. Hydrogen peroxide produced as in <Reaction Scheme 12> is decomposed by the ultraviolet wavelength irradiated and generates 2 moles of radicals when 1 mole of hydrogen peroxide is decomposed. As mentioned above, the generated radicals are applied to the treatment of organic contaminants and organic contaminants, such as microorganisms contained in raw water, together with the ultraviolet energy to be irradiated, in particular the ultraviolet energy of vacuum ultraviolet wavelength.

H ₂ O ₂ + UV → 2, OH

On the other hand, hydrogen peroxide is naturally generated from <Reaction Scheme 10> and <Reaction Scheme 11> is supplied to the inner tank 511 of the ultraviolet treatment tank without a separate hydrogen peroxide source. In addition, ozone gas is naturally generated from <Scheme 5> and is supplied to the inner tank 511 of the ultraviolet treatment tank without a separate ozone source.

On the other hand, as in <Reaction Scheme 4> and <Reaction Scheme 5>, ozone gas is generated from oxygen gas when the vacuum ultraviolet lamp is operated. The ozone gas produced at this time is of two types. That is, one type of ozone gas is produced by oxygen molecules present in the form of dissolved to bubbles present in raw water. The other kind of ozone gas is generated by the oxygen gas supplied to the space between the ultraviolet lamp 52 and the sleeve 521 by receiving energy from the ultraviolet light. And ozone gas formed between the ultraviolet lamp 52 and the sleeve 521 is used for the purification of raw water.

And, as described above, when the inner tank 512 is formed of titanium dioxide, the reaction of <Reaction Scheme 13> to <Reaction Scheme 17> is additionally made by titanium dioxide during ultraviolet irradiation to generate hydroxide radicals. Hydrogen radicals contribute to the treatment of raw water.

TiO ₂ + UV → h ^{+ +} e ^-

^{_{e - + O 2 → O 2}} - and

h ⁺ + H ₂ O → ㆍ OH

h ^{+ +} OH ^- → OH and

H ₂ O ₂ + e ^- → OH + and OH ^-

As such, when titanium dioxide is used, more hydroxyl radicals and various radical species are generated in addition to vacuum ultraviolet light energy, thereby making the physicochemical treatment of raw water more effective.

In addition, the ultraviolet lamp 52 is preferably disposed inside the circular sleeve 521 formed long in one direction. The sleeve 521 is for protecting the ultraviolet lamp 52 by preventing the ultraviolet lamp 52 from coming into direct contact with raw water, and has a hollow cylindrical shape. The sleeve 521 is preferably made of a material capable of transmitting ultraviolet light emitted from the ultraviolet lamp 52, for example, quartz. In addition, the sleeve 521 prevents the ultraviolet lamp 52 from being damaged by the pressure of the raw water introduced thereto, and when the ultraviolet lamp is broken during use, the raw water is contaminated by various components constituting the ultraviolet lamp. To prevent them. In addition, it is preferable that a plurality of ultraviolet lamps 52 are provided, and the ultraviolet lamps 52 are disposed in parallel with the horizontal direction, but in some cases, may be disposed parallel to the vertical direction or inclined with the vertical direction. The sleeve 521 may be formed to correspond to the size of the ultraviolet lamp 52, and may be configured to be disposed only inside the inner tank 512, but in this embodiment, the end is open to the outside of the inner tank 512. Since one end of the sleeve 521 and the ultraviolet lamp 52 is disposed between the outer tank 511 and the inner tank 512, respectively. Therefore, the space between the sleeve 521 and the ultraviolet lamp 52 is connected to each other with the space between the outer tank 511 and the inner tank 512.

In addition, a power supply 522 for supplying power to the ultraviolet lamp 52 is provided. The power supply 522 includes a ballast for continuously supplying a constant voltage and current to generate a constant ultraviolet light energy, and also includes an automatic leakage breaker capable of preparing for a short circuit. The power supply 522 also supplies power to the fan 542.

The oxygen gas supply means supplies only oxygen gas between the sleeve 521 and the ultraviolet lamp 52. The oxygen gas supply means includes an oxygen tank 531, a connection line 532, and a valve 533.

Only oxygen gas is stored in the oxygen tank 531. The oxygen tank 531 is generally sold and can be easily obtained.

The connection line 532 interconnects the space between the sleeve 521 and the ultraviolet lamp 52 and the oxygen tank 531. Oxygen stored in the oxygen tank 531 is supplied between the sleeve 521 and the ultraviolet lamp 52 through the connection line 532.

The valve 533 is coupled to the connection line 532 separately or to form a body with the oxygen tank 531. The valve 533 regulates the volume and velocity of the oxygen gas supplied from the oxygen tank 531. The valve 533 may be configured in various forms such as a solenoid valve or a mechanical valve.

In addition, air should not be present between the ultraviolet lamp 52 and the sleeve 521. If air is present, the air may be removed by using a separate pump or before the raw water is irradiated with ultraviolet rays or the ultraviolet treatment tank 51 It is preferable to supply oxygen gas in advance so that only oxygen gas exists between the ultraviolet ray lamp 52 and the sleeve 521 before supplying it. In addition, there should be no air in the space between the inner tank 512 and the outer tank 511 and the air may be removed using a separate pump or oxygen gas may be added to the space between the inner tank 512 and the outer tank 511. It is preferable to prefill. And, the inner space of the inner tank 512 is preferably completely isolated from the space between the inner tank 512 and the outer tank 511, the inner space of the inner tank 512 is the inner tank 512 and the outer tank ( When connected to the space between the 511, it is preferable to remove the air in the inner space of the inner tank 512 using a separate pump or to pre-fill the oxygen gas in the inner tank 512 inner space.

Of course, the oxygen may be configured to be supplied directly to the inner tank 512, but if oxygen gas is sucked after flowing through the space between the ultraviolet lamp 52 and the sleeve 521, the flow path of oxygen gas is long, The longer the exposure to ultraviolet light, the more ozone gas is formed.

The ozone gas supply means is for supplying ozone gas formed from oxygen gas when irradiated with ultraviolet rays into the ultraviolet treatment tank 51, in particular, the inner tank. The ozone gas supply means includes a connection line 541 and a fan 542.

The connection line 541 interconnects the space between the sleeve 521 and the ultraviolet lamp 52 and the inside of the inner tank 512 of the ultraviolet treatment tank. In this embodiment, one end of the connecting line 541 is an outer tank. It is coupled to the outer tank 511 to be connected to the inside of the 511, the other end of the connection line 541 is coupled to the connection line 2 to be connected to the interior of the connection line (2). As such, when the connection line 541 is installed, the ozone gas formed during ultraviolet irradiation is spaced between the ultraviolet lamp 52 and the sleeve 521, the space between the outer tank 511 and the inner tank 512, and the connection line 541. ) Is supplied to the raw water to be introduced into the inner tank 512 of the ultraviolet treatment tank through the inside and the connecting line 2 and mixed with the raw water, and then introduced into the inner tank 512 along the flow path of the raw water. On the other hand, the connection line 541 may be configured to be directly coupled to the inner tank 512 of the ultraviolet treatment tank so that ozone gas is directly supplied to the raw water introduced into the inner tank 512, the connection line 541 is Directly connected to the space between the ultraviolet lamp 52 and the sleeve 521 so that the ozone gas flows directly into the connecting line 541 without flowing between the outer tank 511 and the inner tank 512, the raw water It can also be configured to be supplied to. In addition, in order to prevent raw water from flowing into the inner tank 512 and flowing back into the connection line 541, a check valve (not shown) is installed in the connection line 541, so as to be close to the connection line 2. It is desirable to install it properly.

The fan 542 is coupled on the connection line 541. The fan 542 functions to suck ozone gas formed between the ultraviolet lamp 52 and the sleeve 521 and to supply the raw water. Of course, when neither oxygen gas turns into ozone gas, oxygen gas as well as ozone gas is supplied to raw water.

The cleaning member 55 has an annular shape and is fitted to the sleeve 521 to be in contact with the outer circumferential surface of the sleeve 521. The cleaning member 55 is linearly movable along the longitudinal direction of the sleeve 521. The cleaning member 55 may be made of rubber as a whole, or a fabric or rubber may be attached to the inner circumferential surface of the annular body and the annular body made of metal or plastic so that the fabric or rubber contacts the outer circumferential surface of the cleaning member. When the cleaning member 55 rubs the outer circumferential surface of the sleeve 521 while linearly moving along the longitudinal direction of the sleeve 521, foreign matter (especially occurring when exposed to raw water for a long time) is cleaned on the outer circumferential surface of the sleeve 521. Accordingly, the ultraviolet rays of the ultraviolet lamp 52 are more effectively irradiated into the raw water of the inner tank 512.

The drive means drives the cleaning member 55. The drive means may be composed of a hydraulic actuator (not shown). When the hydraulic actuator is configured, the main body of the hydraulic actuator is disposed outside the inner tank 512, and the piston of the hydraulic actuator is fixed to the cleaning member 55 and disposed inside the inner tank 512. In addition, the driving means is configured to include a coil (not shown) disposed outside the inner tank and a magnet (not shown) fixed to the cleaning member, and fixed to the magnet by changing the strength or direction of the current applied to the coil. The cleaning member may be configured to move linearly. Since a structure using such a coil and a magnet is already known in a plunger pump or the like, a detailed description thereof will be omitted.

The hydrogen ion concentration adjusting unit 60 is for adjusting the hydrogen ion concentration, that is, pH of the inner tank 512. The hydrogen ion concentration adjusting unit 60 includes a pH adjusting material storage tank 61 and a pH adjusting module 62.

pH control material storage tank 61 is stored a material for adjusting the pH. For example, the pH adjusting material storage tank 61 may be configured as an acidic pH adjusting material storage tank storing an acid solution containing a lot of H ⁺ ions or a basic pH adjusting material storage tank storing a basic solution containing a lot of OH ⁻ ions. In addition, a pair of acidic pH regulator storage tank and basic pH regulator storage tank may be provided. The pH adjusting material storage tank 61 is interconnected through the inner tank 512 and the connection line (4).

pH adjustment module 62 is installed in the connection line (4). The pH adjusting module 62 adjusts the outflow amount of the acidic solution or the basic solution stored in the pH adjusting material storage tank 61. Therefore, the amount of acidic solution or basic solution flowing into the inner tank 512 can be controlled. The pH control module 62, like the raw water outflow control module 40, is composed of a mass flow controller (Mass Flow Controller) or an electronic valve capable of electronically controlling the flow rate.

Meanwhile, a solid material other than a solution may be stored in the pH adjusting material storage tank 61, and the pH of the raw water may be adjusted by supplying the solid material to the inner tank 512 and dissolving it in the raw water. When the solid material is stored in the pH control material storage tank, the pH control module is changed to be suitable for the transport of the solid material.

In the raw water storage tank 70, raw water in which both filtration and ultraviolet light treatment are completed is stored. The raw water storage tank 70 is connected to the inner tank 512 of the ultraviolet light treatment tank, and the raw water treated by the ultraviolet light in the inner tank 512 is stored in the raw water storage tank 70 through the connection line 3.

The valve 80 changes the flow path of the treated raw water flowing out of the treated raw water storage tank 70. The valve 80 is provided at the intersection of the discharge line 6 and the bypass line 7. In the present embodiment, the valve 80 is composed of a three-way solenoid valve, so that the raw water flows to the bypass line 7 or to the discharge line 6 depending on the operation of the valve. Of course, two-way valves may be installed in the discharge line 6 and the bypass line 7 to replace the three-way valves. Here, the discharge line 6 refers to the pipe discharged from the treated raw water storage tank 70, the bypass line 7 is a pipe connecting the treated raw water storage tank 70 and the filtration tank 20. Say In addition, in the present embodiment, a piping system including various connection lines 1, 2, 3, 4, 532, 541, a discharge line 6, and a bypass line 7 is disclosed. It is obvious that design is possible.

The controller 90 controls the operation of the raw water outflow control module 40, the pH control module 62 and the valve 80.

The controller 90 controls the operation of the valve 80 based on the quality of the raw water stored in the raw water storage tank 70. Here, the water quality of the treated raw water is calculated by integrating various values such as pH, water temperature, salinity, turbidity, dissolved oxygen amount, total suspended solids, biological oxygen demand, and chemical oxygen demand, and these various values are treated as raw water storage tanks. It is measured by installing a separate water quality sensor (71) in the (70). In addition, the quality of the raw water may be determined by the number and size of the microorganisms analyzed through the image of the raw water, and the image of the raw water is made by the camera 72 installed in the raw water storage tank 70. Based on the numerical value measured by the water quality measuring sensor 71 and the image taken by the camera 72, when the water quality of the raw water meets a preset water quality standard, the controller 90 causes the raw water to be discharged. Operate the valve so that it can flow through (6). On the other hand, when the water quality of the raw water does not meet the predetermined water quality standard, the controller 90 operates the valve 80 so that the raw water flows into the bypass line 7 so that the filtration and ultraviolet treatment can be performed again. .

In addition, the controller 90 controls the pH adjusting module 62 based on the pH of the raw water stored in the inner tank 512. The inner tank 512 is provided with a pH measuring sensor 513 to measure the pH. When the pH of the raw water measured by the pH measuring sensor 513 is not in the range of 4.8 to 9, the controller 90 adjusts the pH adjusting module 62 so that an acidic solution or a basic solution flows into the inner tank. It also controls the amount of incoming solution. As such, when the acidic solution or the basic solution is introduced, the pH of the inner tank 512 can be adjusted, and if the amount of the solution is controlled, the time taken to obtain the desired pH can be controlled.

And, the controller 90 controls the raw water outflow control module 40. As described above, since the flow rate or flow rate of the raw water flowing into the inner tank 512 affects the overall durability of the apparatus or the stability of the raw water treatment, the control of the raw water flowing into the inner tank 512 is essential. The flow rate measuring sensor 31 for measuring the flow rate is disposed in the connection line 2 connecting the buffer tank 30 and the inner tank 512, and the raw water flows out based on the flow rate measured from the flow rate measuring sensor 31. The control module 40 is controlled. Then, the discharge flow rate is calculated based on the flow rate measured from the flow rate measuring sensor 31 and the diameter of the connection line (2).

Of course, the controller 90 also controls the operation of the ultraviolet lamp 52, and receives the flow rate of the raw water that is pumped by the pump (10). In addition, the controller 90 performs a control operation that monitors and monitors the operation of the entire water treatment apparatus 100. Since this is already well known, a detailed description thereof will be omitted.

An ozone sensor (not shown) capable of detecting ozone may be installed in the space between the ultraviolet lamp 52 and the sleeve 521 or between the inner tank and the outer tank. The ozone sensor measures the volume of ozone to the concentration of ozone.

In the water treatment apparatus 100 configured as described above, since the raw water is first filtered in the filtration tank 20 and then secondarily treated by ultraviolet light in the ultraviolet treatment unit 50, the raw water can be treated more effectively. have.

In particular, since the most effective vacuum ultraviolet lamp 52 for water decomposition is used and various kinds of radicals are generated accordingly, raw water can be more effectively decomposed.

In addition, since the oxygen gas supplied between the ultraviolet lamp 52 and the sleeve 521 is converted into ozone gas by ultraviolet rays, and the ozone gas is supplied to the raw water to be treated again and used for purification of raw water, ozone gas, a powerful oxidant, is used. There is an advantage that can be supplied in large quantities without a separate ozone gas source. In particular, since air is not used in the generation of ozone gas unlike in the prior art, nitrogen oxides are not generated by a large amount of nitrogen gas in the air. This means that only ozone gas necessary for purification of raw water is formed, and pollutants do not form nitrogen oxides. Therefore, unlike the related art, nitrogen oxides, which are pollutants, are formed, and thus, a large amount of nitrogen oxides are contained in the raw water discharged or treated in the air, thereby not significantly reducing the treatment effect of the raw water.

The treated raw water is discharged only when the water quality of the raw water satisfies a predetermined water quality standard, so that only the raw water that meets the water quality standard is discharged.

The outer circumferential surface of the sleeve 521 may be cleaned by the cleaning member 55. Therefore, even if foreign matter is attached to the surface of the sleeve 521 in use, it is possible to easily remove the foreign matter, it is possible to effectively irradiate ultraviolet light with raw water and oxygen gas.

In addition, by controlling the raw water outflow control module 40, it is possible to adjust the flow rate and flow rate of the raw water flowing into the inner tank 512 of the ultraviolet treatment tank, it is possible to prevent the breakage of the sleeve 521, furthermore the raw water It can be made constant and stabilizes a process.

In addition, the inner tank 512 is made of a metal material containing titanium dioxide, and the reaction of various radicals is more active to generate a large amount of strong hydroxide radicals, so that the dissolved organic matter present in the raw water can be more effectively oxidized. do.

As mentioned above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the technical idea of the present invention. It is obvious.

For example, the present embodiment is configured to include one ultraviolet treatment tank, but as necessary, the plurality of ultraviolet treatment tanks may be connected in series or in parallel to configure the above-described physicochemical reaction in multiple stages. have.

In addition, in the present embodiment, the ultraviolet treatment tank is configured to include an inner tank and an outer tank, but the ultraviolet treatment tank may be composed of only one tank.

In the present embodiment, the oxygen gas supply means is configured to include an oxygen tank, a connection line and a valve, but the oxygen gas supply means is configured to supply oxygen gas obtained by extracting only oxygen gas from the atmosphere or by electrolysis of water. You may. As such, a device for extracting oxygen gas from the atmosphere or generating oxygen gas through electrolysis of water is already commercialized, and thus a detailed description thereof will be omitted.

In addition, in this embodiment, the process of processing the raw water as the object to be treated, but the ultraviolet treatment unit and the water treatment apparatus of the present embodiment may each purify the contaminated gas. In this way, if the object to be treated is contaminated gas, it is not necessary to provide a hydrogen ion concentration control unit, a pH measuring sensor, a water quality measuring sensor, and the like.

In addition, the ultraviolet treatment unit and the water treatment apparatus of this embodiment may be used to treat ballast water. Here, the ballast water is seawater stored in the lower part of the ship in order to maintain the balance of the ship loaded with cargo, in particular refers to the seawater of the starting point, the ballast water is discharged to some extent after the ship arrives at the destination.

1 is a schematic diagram of a water treatment apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic block diagram illustrating a control process of the water treatment apparatus shown in FIG. 1.

3 is a detailed view of the ultraviolet treatment unit shown in FIG.

<Description of the symbols for the main parts of the drawings>

1,2,3,4,532,541 Connection line 6 Exhaust piping

7.Bypass piping 10 ... Pump

20 ... filtration tank 30 ... buffer tank

31.Flow sensor 40 ... Water flow control module

50 ... UV treatment unit 51 ... UV treatment tank

52 UV lamp 55 Cleaning member

60 ... Hydrogen concentration control unit 61 ... pH regulator storage tank

62 ... pH control module 70 ... treated water storage tank

71 Water quality sensor 72 Camera

80,533 ... Valve 90 ... Controller

Water treatment unit 513 pH measuring sensor

521 ... sleeve 522 ... power supply

531 Oxygen Tank 542 Fan

Claims (11)

Ultraviolet treatment tank; A hollow sleeve installed inside the ultraviolet treatment tank; An ultraviolet lamp disposed inside the sleeve to irradiate ultraviolet rays; Oxygen gas supply means for supplying oxygen gas between the sleeve and the ultraviolet lamp; And And ozone gas supply means for supplying the ozone gas to flow between the sleeve and the ultraviolet lamp and to supply a gas containing ozone gas formed by the ultraviolet light into the ultraviolet treatment tank. Processing unit. The method of claim 1, The oxygen gas supply means, An oxygen tank in which the oxygen gas is stored; A connection line connecting between the sleeve and the ultraviolet lamp and the oxygen tank; And And a valve for controlling the supply amount of the oxygen gas. The method of claim 1, The ozone gas supply means, A connection line interconnected between the sleeve and the ultraviolet lamp and inside the ultraviolet treatment tank; And And a fan that sucks the ozone gas so that the ozone gas flows along the inside of the connection line. The method of claim 1, The sleeve is formed long in one direction, A cleaning member which is in contact with an outer surface of the sleeve and is coupled to the sleeve so as to be linearly movable along the longitudinal direction of the sleeve, and which rubs and cleans the outer surface of the sleeve during the linear movement; And And a driving means for driving the cleaning member. The method of claim 1, In the ultraviolet treatment tank, raw water flows in as the object to be treated and is discharged after being treated with ultraviolet and ozone gas, a pH adjusting material storage tank in which a material for adjusting pH is stored; A pH control module disposed between the pH control material storage tank and the ultraviolet light treatment tank and configured to adjust an amount of the material stored in the pH control material storage tank to flow out to the UV light treatment tank; And And a controller for controlling the operation of the pH adjusting module so that the pH of the raw water is in the range of 4.8 to 9 based on the pH of the raw water stored in the ultraviolet light treatment tank. The method of claim 3, wherein The ultraviolet treatment tank includes an outer tank and an inner tank disposed inside the outer tank, A portion of the sleeve is disposed between the outer tank and the inner tank, Between the sleeve and the ultraviolet lamp is connected between the outer tank and the inner tank, The fan is a UV treatment unit, characterized in that for sucking the gas between the outer tank and the inner tank. The method of claim 1, The tank is an ultraviolet treatment unit, characterized in that made of a metal material containing any one of aluminum, stainless steel and titanium dioxide. The method according to any one of claims 1 to 7, The ultraviolet lamp is a UV treatment unit, characterized in that the vacuum ultraviolet lamp for irradiating vacuum ultraviolet rays. A pump for pumping raw water to be treated; An ultraviolet treatment unit for introducing the transported raw water and treating the raw water by irradiating the introduced raw water with ultraviolet rays; Raw water outflow control module for adjusting at least one of the flow rate and the flow rate of the raw water flowing into the ultraviolet treatment unit; And And a controller for controlling the operation of the raw water discharge control module. The ultraviolet treatment unit, Ultraviolet treatment tank; A hollow sleeve installed inside the ultraviolet treatment tank; An ultraviolet lamp disposed inside the sleeve to irradiate ultraviolet rays; Oxygen gas supply means for supplying oxygen gas between the sleeve and the ultraviolet lamp; And And ozone gas supply means for supplying the ozone gas to flow between the sleeve and the ultraviolet lamp and to supply a gas containing ozone gas formed by the ultraviolet light into the ultraviolet treatment tank. . The method of claim 9, The raw water discharge control module is characterized in that the mass flow controller (Mass Flow Controller). The method of claim 9, A filtration tank disposed between the pump and the ultraviolet treatment tank, wherein the raw water fed by the pump flows in and out, and the raw water is filtered; A raw water storage tank in which raw water processed by the ultraviolet treatment unit is stored; A piping system including a discharge pipe connected to the raw water storage tank and a bypass pipe interconnecting the discharge pipe and the filtration tank; And A valve which is installed in the piping system and changes the flow path of the raw water to be discharged through the discharge pipe or flows to the filtration tank; The controller comprising: And an operation of the valve based on the quality of the raw water stored in the raw water storage tank.

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