KR20140049138A

KR20140049138A - Rapid water treatment appratus using pulsed ultraviolet lamp

Info

Publication number: KR20140049138A
Application number: KR1020120113784A
Authority: KR
Inventors: 이성재; 허남국; 한종훈; 남기영
Original assignee: 한라산업개발 주식회사; 주식회사 삼안
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2014-04-25

Abstract

The present invention relates to a rapid water treatment apparatus using a pulse ultraviolet lamp. The rapid water treatment apparatus, according to an embodiment of the present invention, includes: a reaction tank wherein more than one pulse ultraviolet lamp is installed inside, and which treats and discharges the water flowing in, using the ultraviolet lamp; and a control device capable of controlling the operation of the pulse ultraviolet lamp installed inside the reaction tank. The control device decides the operating voltage, operating current, operating power, operating frequency, and pulse width, according to the quality of the water flowing in, and is capable of changing the interval between the operating lamps and the number of the lamps.

Description

RAPID WATER TREATMENT APPRATUS USING PULSED ULTRAVIOLET LAMP}

The present invention relates to a rapid water treatment apparatus using a pulsed ultraviolet lamp.

UV, ie, UV, is shown in Figure 1, depending on the wavelength, UA A (315-400 nm), UV B (280-315 nm), UV C (185-280 nm) and UV D (100-185 nm). UV C is the wavelength band typically used for disinfection and advanced oxidation process (AOP).

Sterilization / disinfection by UV is intensively destroyed the molecular structure of thymine in the base of DNA by UV irradiation, and thymine absorbed UV is polymerized with neighboring thymine or cytosine to prevent normal DNA replication and function as a living organism To stop. This mechanism, unlike chemical disinfection, is unlikely to produce microbial immunity.

Pulsed ultraviolet light (PUV) utilizes a point that causes the microbial cell membranes to be traumatized by controlling the osmotic pressure by killing the microbial cell membranes at short wavelengths with much higher energy than UV having a long wavelength band. In addition, the general low pressure UV and UV C are generated similarly, but problems such as disinfection radius (distance) and maintenance difficulty, which are pointed out as disadvantages of UV disinfection, can be solved and a large amount of disinfection can be performed in a short time. The disinfection ability of Aspergillus Niger and Escherichia coli by the PUV disinfection system is particularly excellent.

PUV was developed to overcome the weak power, a disadvantage of low voltage / low power lamps. PUV is a technology that irradiates UV with a pulse width of 10 microseconds (10 millionths of a second), the maximum number of pulses of 120 pulses / sec, and the maximum energy (40,000 W / pulse). The PUV disinfection system with high instantaneous power has a long effective disinfection distance of 30 to 40 cm, compared to a typical mercury lamp less than about 5 cm in purified water and less than 3 cm in sewage.

Such a PUV disinfection system can be applied to a water treatment system. A conventional storage facility can be divided into a CSOs storage facility for treating combined sewer overflows and a storage facility for preventing flooding. In this case, it is a facility installed to store the overflow water in order to prevent the initial surface wash water from overflowing with the rainfall and flowing into the river. In addition, the storage facility for the flooding prevention is a facility for storing a large amount of rainwater to prevent the flooding of the city issued by a lot of rainfall, it is designed for high rainfall frequency.

However, the existing water treatment system only discloses that the PUV is used for water treatment, and does not disclose the structure and control method of an apparatus for optimizing the water treatment effect.

KR 10-2008-0056717 A

The present invention has been made to solve the problems described above, and adopts a structure capable of effectively treating influent water such as CSOs, to provide a rapid belonging system for controlling the dynamics of the pulsed UV lamp with optimal efficiency The purpose is.

To this end, the rapid water treatment apparatus according to an embodiment of the present invention has one or more pulsed ultraviolet lamps installed therein, and the reaction tank for discharging and discharging the influent water using the ultraviolet lamp, and the operation of the pulsed ultraviolet lamp installed in the reactor And a control device for controlling the control device, wherein the control device determines the operating voltage, the operating current, the operating power, the operating frequency, and the pulse width of the pulsed ultraviolet lamp according to the water quality of the inflow water, and varies the number of movable lamps. .

The reaction vessel may include an inlet receiving the inflow water, an outlet for discharging the inflow water, and a body portion connected between the inlet and the outlet, and the body portion may have a cylindrical shape.

The body portion may be internally coated with a reflector therein, and the reflector may be aluminum foil.

Each of the pulsed ultraviolet lamps has a long rod-shaped cylindrical structure, and may be arranged in a row at regular intervals such that the longitudinal direction of the long rod is perpendicular to the direction in which the inflow water flows.

The control device is characterized in that the operating voltage of the pulsed ultraviolet lamp is greater than 0 V and less than 2400 V, the operating current is greater than 0 A and less than 6 A, and the operating power is greater than 0 W and less than 6000 W, operating frequency The value can be set within the range of 1 ~ 100 Hz and the pulse width within the range of 10 ~ 200 200.

In this case, the control device may set the operating power of the pulsed UV lamp to a value between 4000 and 6000 W, and operate the pulsed UV lamp for 10 seconds.

In addition, the rapid water treatment apparatus according to an embodiment of the present invention may further include a water quality measuring sensor for measuring the water quality of the influent.

The control device may calculate an effective disinfection distance of the ultraviolet pulse lamp based on the water quality of the water inflow water measured by the water quality measurement sensor, and determine the interval and the number between the movable lamps according to the calculated effective disinfection distance. have.

The influent may be Combined Sewer Overflows.

The rapid sterilization system according to the present invention can determine the interval and the number of lamps to be operated according to the quality of the influent to control the on and off, it is possible to disinfect the influent in the optimum conditions for the influent.

In addition, the rapid disinfection system according to the present invention adopts a reflector for increasing the disinfection efficiency inside the body of the reactor, and in particular, by using a highly efficient aluminum foil as a reflector, the disinfection efficiency can be maximized.

In addition, the rapid disinfection system according to the present invention has a high disinfection efficiency by operating the operating power of the pulsed ultraviolet lamp for more than 10 seconds at a condition of 4000 W or more.

1 is a diagram illustrating wavelength distribution for each type of ultraviolet light.
2 is a schematic configuration diagram of a rapid sterilization apparatus according to an embodiment of the present invention.
Figure 3 is a side view of the reaction tank of the rapid sterilization apparatus according to an embodiment of the present invention.
4A and 4B are side and plan views, respectively, when only one lamp in the center of the five lamps is turned on in the reactor.
5A and 5B are a side view and a plan view when only two lamps at the far left and the right of the five lamps in the reactor are turned on, respectively.
6A and 6B are a side view and a plan view, respectively, when three lamps at the far left, the center and the right of the five lamps in the reactor are turned on.
7A to 7C are diagrams showing the results of microbial killing experiments according to the operation power of the pulsed ultraviolet lamp, the internal coating agent and the shape of the reaction tank.
Figure 8a is a diagram showing the results of microbial killing experiments according to the form of the internal coating agent and the reaction tank and the concentration of suspended solids.
8B is a view showing the results of microbial killing experiments in the form of the internal coating agent and the reaction tank and the distance from the center of the lamp.
9A and 9B are graphs showing microbial killing rate according to the form of the internal coating agent and the reaction tank.
10A and 10B are graphs showing BPA and E2 treatment results according to internal coating agents and reactors, respectively.
11A to 11E are graphs showing BPA treatment results according to pulsed ultraviolet lamp irradiation time.
12A to 12E are graphs showing the results of the E2 treatment according to the pulsed ultraviolet lamp irradiation time.
13 is a view showing the concentration of suspended solids before and after disinfection using a pulsed ultraviolet lamp according to the present invention.

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

Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art, and the following embodiments may be modified in various other forms, The present invention is not limited to the following embodiments. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an," and "the" include plural forms unless the context clearly dictates otherwise. Also, " comprise " and / or " comprising " as used herein specify the presence of stated shapes, numbers, steps, operations, elements, elements, and / , But does not preclude the presence or addition of one or more other features, integers, operations, elements, elements, and / or groups. As used herein, the term " and / or " includes any and all combinations of any of the listed items.

Although the terms first, second, etc. are used herein to describe various elements, regions and / or regions, it should be understood that these elements, components, regions, layers and / Do. These terms do not imply any particular order, top, bottom, or top row, and are used only to distinguish one member, region, or region from another member, region, or region. Thus, the first member, region or region described below may refer to a second member, region or region without departing from the teachings of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings schematically showing embodiments of the present invention. In the figures, for example, variations in the shape shown may be expected, depending on manufacturing techniques and / or tolerances. Accordingly, embodiments of the present invention should not be construed as limited to any particular shape of the regions illustrated herein, but should include variations in shape resulting from, for example, manufacture.

2 is a schematic configuration diagram of a rapid sterilization apparatus according to an embodiment of the present invention.

2, the rapid disinfection device according to an embodiment of the present invention includes a control device 10 and the reaction vessel 20.

A total of five pulse ultraviolet lamps 21, 23, 25, 27, 29 are installed in the reactor 20, and the reactor 20 uses the pulse ultraviolet lamps 21, 23, 25, 27, 29. It serves to treat influent. Of course, in the embodiment of Figure 2 is shown as five pulse ultraviolet lamps, but this is only one embodiment, it may be set in various ways depending on the amount and design specifications of the treatment port influent.

The reactor 20 is configured to include an inlet 24 receiving the influent, an outlet 26 for discharging the influent and a body portion connected between the inlet 24 and the outlet 26.

As shown in FIG. 2, the inlet 24 and the outlet 26 are connected to a side having a funnel-shaped diameter, and the central predetermined length portion has a cylindrical cylindrical structure.

Each of the pulsed ultraviolet lamps 21, 23, 25, 27, and 29 has a long rod-shaped cylindrical structure, and the long rod-shaped lamps may be arranged in a row at regular intervals so that the lengthwise direction of the long rods is perpendicular to the direction in which the inflow water flows. .

The control device 10 controls the operation of the pulsed ultraviolet lamps 21, 23, 25, 27, 29 installed in the reactor 20. Specifically, the control device 10 determines the operating voltage, the operating current, the operating power, the operating frequency and the pulse width of the pulse ultraviolet lamps 21, 23, 25, 27, 29 according to the quality of the inflow water, and the number of the operating lamps. Can be changed.

A reflector may be coated inside the reactor 20, and a reflector may be used as a mirror, stainless steel, aluminum foil, aluminum 1050, 5052, 6061, or the like. . Preferably, it is preferable to use aluminum foil as a coating to maximize disinfection efficiency. This will be described later together with the experimental results.

Figure 3 is a side view of the reaction tank of the rapid sterilization apparatus according to an embodiment of the present invention.

It can be seen that the pulsed ultraviolet lamps 21, 23, 25, 27, 29 located inside the reactor 20 are shown in a circle. The darkly indicated pulsed ultraviolet lamp 25 is in the state of operation.

The inside diameter of the cylindrical tub 20 can be designed to 120 cm, the length of the flat portion of the body portion can also be designed to about 120 cm. However, these values are only one embodiment, and can be produced in various values according to the incoming water quality and the size of the reactor 20.

4A and 4B are side and plan views, respectively, when only one lamp in the center of the five lamps is turned on in the reactor.

Referring to FIG. 4A, only the pulsed ultraviolet lamp 25 is in an operating state, and the control device 10 has an operating voltage, an operating current, an operating power, an operating frequency, and a pulse width so as to have an effective disinfection distance of about 60 cm. Determine. In FIG. 4A the effective disinfection distance is shown to a radius of 60 cm relative to the center of the pulsed ultraviolet lamp 25.

FIG. 4B is a plan view from above, showing that only the center pulse ultraviolet lamp 25 is shown in dark operation.

5A and 5B are a side view and a plan view when only two lamps at the far left and the right of the five lamps in the reactor are turned on, respectively.

In FIG. 5A, it can be seen that the leftmost pulsed UV lamp 21 and the rightmost pulsed UV lamp 29 are operating, and the effective disinfection distance is also indicated by a circle having a radius of 60 cm.

FIG. 5B also shows a state in which only two pulse ultraviolet lamps 21 and 29 are in operation as a plan view.

6A and 6B are a side view and a plan view, respectively, when three lamps at the far left, the center and the right of the five lamps in the reactor are turned on.

In FIG. 6A, it can be seen that the leftmost pulsed UV lamp 21 and the central pulsed UV lamp 25 and the rightmost pulsed UV lamp 29 are operated, and the effective disinfection distance has a radius of 60 cm. .

FIG. 6B is also a top view, showing that only the three pulsed ultraviolet lamps 21, 25, 29 above are in operation.

As can be seen in the above three embodiments, the rapid disinfection system according to the present invention is characterized by operating by determining the interval and the number of lamps to operate among a plurality of pulsed UV lamps according to each situation. At this time, the effective disinfection distance is also considered to determine the interval and number of lamps to operate.

For example, if the turbidity is very high, the effective disinfection distance should be about 30 cm or less, and the number of lamps operated increases the disinfection efficiency. If the turbidity is low, the effective disinfection distance is about 60 cm. The number can be reduced.

In addition, the rapid water treatment apparatus according to an embodiment of the present invention may further include a water quality measuring sensor (not shown) for measuring the water quality of the influent, the control device 10 is to measure the water quality of the influent measured by the water quality sensor The effective disinfection distance of the pulsed ultraviolet lamp can be calculated on the basis, and the interval and number between movable lamps can be determined according to the calculated effective disinfection distance.

The water quality sensor may be installed inside the reactor 20, or may be installed in another device of the inflow path of the influent water before the reactor 20.

Hereinafter, the configuration and effects of the rapid water treatment apparatus according to the present invention will be described in detail based on experimental data for each parameter of the rapid water treatment apparatus according to the present invention. In the present invention will be described based on the disinfection reactor in which the PUV lamp is arranged according to the water quality of the CSOs as influent.

As described above, the reactor 20 of the present invention is cylindrical, the material is aluminum, and the length of the reactor 20 is 120 cm or more. Depending on the CSOs influent water quality, one, two or three PUV lamps can be selected and operated, which are preset to cover all the fluid influents according to the analysis results according to the influent characteristics studied.

The rapid water treatment apparatus of the present invention is composed of a control device 10 and a reaction vessel 20, the control device 10 is provided with a power supply device for supplying power therein, although not shown. The power supply ranges from an average output voltage of up to 2,400 V, an output current average of up to 6 A, an output power of up to 6,000 W, an operating frequency of 1 to 100 Hz, a pulse width of 10 to 200 Hz, and a simmer current of 200 to 300 Hz. The operating voltage, operating current, operating power, operating frequency, pulse width, etc. are changed in accordance with the processing purpose and the target material within the operating conditions.

7A to 7C are diagrams showing the results of microbial killing experiments according to the operating power of the pulsed ultraviolet lamp, the internal coating agent and the shape of the reaction tank. Is 10 seconds)

7A to 7C, the x axis represents irradiation time and the y axis represents microbial killing rate. 7A shows when the operating power is 1000W, FIG. 7B shows when the operating power is 2000W, and FIG. 7C shows when the operating power is 4000W.

Looking at the three graphs, it can be seen that the maximum microbial killing rate is obtained by securing an irradiation time of at least 10 seconds, and the use of aluminum foil as an internal coating agent is more efficient than the use of a mirror or stainless steel as a coating agent. It can be seen that high.

Figure 8a is a diagram showing the results of microbial killing experiments according to the type of the internal coating agent and the reaction tank and the concentration of suspended solids. )

Referring to Figure 8a it can be seen that the higher the concentration of suspended solids, the lower the rate of microbial death. Specifically, the mortality rate was maintained at 100% until the concentration of the suspended solids was 20 mg / L, but thereafter, it was found to drop significantly.

However, it can also be seen that the mortality rate when the aluminum foil is used as the reflector is also higher.

8B is a diagram showing the results of microbial killing experiments in the form of the internal coating agent and the reaction tank and the distance from the center of the lamp. (The operating power is 4000 W, the concentration of suspended solids is 20 mg / L, and the irradiation time is 10 seconds. )

Referring to Figure 8b, the effective disinfection distance is maintained at a killing rate of 100% up to 35 cm, after that it can be seen that the killing rate is significantly reduced.

However, also in this case, the use of aluminum foil as a reflector can be seen that the relatively high mortality.

9A and 9B are graphs showing the killing rate of microorganisms according to the type of internal coating agent and the reaction tank. Second)

Referring to FIG. 9A, the mortality rates of the reaction vessel 20 in the form of plate, hexagon, and circle are compared. It can be seen that when the inner coating is aluminum foil, stainless steel, or mirror, the roundness is the highest, followed by hexagon and then plate.

As a result, in Figure 9a it can be seen that the shape of the reaction vessel 20 is circular, the death rate is the maximum when the inner coating agent is made of aluminum foil.

9B shows the mortality rate when the internal coating agent is further diversified. The mortality rates when the internal coating agent is aluminum mirror, aluminum 6061, mirror, aluminum 1050, aluminum 5052, stainless steel, aluminum foil are shown respectively.

Referring to Figure 9b it can be confirmed once again that the highest mortality rate using the aluminum foil as a coating.

10A and 10B are graphs showing BPA and E2 treatment results according to reaction tanks and other conditions. 10A illustrates a case where the operating power is 2000 W, the effective disinfection distance is 10 cm, and the BPA concentration is 1 uM. FIG. 10B illustrates the case where the operating power is 2000 W, the effective disinfection distance is 15 cm and the concentration of E2 is 1 uM.

Referring to FIG. 10A, when the PUV lamp is applied to a cylindrical reactor and hydrogen peroxide (H ₂ O ₂ ) is used together, the concentration of BPA (bispenol A) decreases with time. In other cases, such as the use of a wire mesh (wire mesh), the reduction rate was not greater than the previous case.

Referring to FIG. 10B, similarly, when the PUV lamp is applied to the reactor and hydrogen peroxide (H ₂ O ₂ ) is used together, the concentration of E 2 (17 β-estradiol) decreases with time.

From the above experiment, it can be seen that adding hydrogen peroxide is more effective when removing BPA or E2.

11A to 11E are graphs showing BPA treatment results according to the pulsed UV lamp irradiation time, and FIGS. 12A to 12E are graphs showing E2 treatment results according to the pulsed UV lamp irradiation time. uM, operating power is 4000 W)

11A to 11E, it can be seen that 100% of the BPA is removed in about 20 minutes and 100% of the EPA in about 30 minutes.

Fig. 13 is a view showing the concentration of suspended solids before and after disinfection using a pulsed ultraviolet lamp according to the present invention. (The operating power is 4000 W, the effective disinfection distance is 25 cm, and the irradiation time is 10 seconds.)

Referring to FIG. 13, it can be seen that when the rapid water treatment apparatus according to the present invention is used, the concentration of suspended solids in each sample is significantly reduced.

Comprehensive examples of all above, the operating power is more than 4000 W, the effective disinfection distance is 35 cm or less, irradiation time 10 seconds or more, the internal coating agent can be confirmed that the highest microbial killing rate when using aluminum foil. .

Therefore, the rapid water treatment system of the present invention can be operated by preferably using aluminum foil as the internal coating, setting the operating power to 4000 W or more, the irradiation time to 10 seconds or more, and the effective disinfection distance to 35 cm or less.

However, the above embodiment is only an optimum embodiment covering all cases, it is obvious that the value of each parameter may vary depending on the type and quality of the influent.

The embodiments of the present invention have been described with reference to the drawings. However, this is only for the purpose of illustrating the present invention and is not intended to limit or limit the contents of the present invention. Therefore, it will be possible to one skilled in the art to practice various modifications and equivalent other embodiments from this. Therefore, the true technical protection scope of the present invention will be defined by the technical details of the appended claims.

10: controller 20: reactor
21, 23, 25, 27, 29: pulsed ultraviolet lamp 24: inlet
26: outlet

Claims

A reaction tank having one or more pulsed ultraviolet lamps installed therein and discharging the influent water by using the ultraviolet lamps; And
It is provided with a control device for controlling the operation of the pulsed ultraviolet lamp provided in the reactor,
The control device is a rapid water treatment apparatus, characterized in that for determining the operating voltage, the operating current, the operating power, the operating frequency and the pulse width of the pulsed ultraviolet lamp according to the water quality of the inflow water, and varying the interval and the number of the movable lamp.

The method of claim 1,
The reactor is an inlet receiving influent;
An outlet for discharging the inflow water; And
A body portion connected between the inlet and the outlet,
Rapid water treatment apparatus, characterized in that the body portion has a cylindrical shape.

3. The method of claim 2,
Rapid treatment apparatus, characterized in that the body portion is internally coated with a reflector therein.

The method of claim 3,
The reflector is an aluminum foil, characterized in that the rapid water treatment apparatus.

3. The method of claim 2,
Each of the pulsed ultraviolet lamps has a long rod-shaped cylindrical structure,
And the long rod-shaped longitudinal direction is arranged in a row at regular intervals so as to be perpendicular to the direction in which the inflow water flows.

3. The method of claim 2,
The control device includes:
The operating voltage of the pulsed ultraviolet lamp is greater than 0 V and less than 2400 V, the operating current is greater than 0 A and less than 6 A, the operating power is greater than 0 W and less than 6000 W, and the operating frequency is from 1 to 100. A rapid water treatment device, characterized in that the value between Hz and the pulse width is set within the range of 10 to 200 Hz.

The method according to claim 6,
The control device includes:
And setting the operating power of the pulsed ultraviolet lamp to a value between 4000 and 6000 W, and operating the pulsed ultraviolet lamp for 10 seconds.

3. The method of claim 2,
Rapid water treatment apparatus further comprises a water quality measuring sensor for measuring the water quality of the influent.

9. The method of claim 8,
The control device includes:
Calculate an effective disinfection distance of the ultraviolet pulse lamp based on the quality of the influent water measured by the water quality measurement sensor,
And the interval and the number of the movable lamps are determined according to the calculated effective disinfection distance.

3. The method of claim 2,
The influent is a rapid sewage treatment apparatus, characterized in that the combined sewer overflows (Combined Sewer Overflows).