KR20180064007A - Hybrid water treatment device - Google Patents

Abstract

The present invention relates to a hybrid water treatment apparatus which can effectively remove bacteria, virus, a small amount of pollutant, a recalcitrant substance or the like which are hard to remove with ultraviolet disinfection by using chlorine which has excellent sterilizing power, and can protect secondary pollution by removing non-reactive chlorine by a ultraviolet treatment. A hybrid water treatment apparatus according to an embodiment of the present invention comprises: a chlorine processing part which has a sewage inlet in which sewage is introduced and a chlorine inlet in which chlorine is injected formed at one end, has a first outlet in which a sewage sample is drawn out formed at the other end, and has a stirring wing for mixing introduced sewage and chlorine formed at the inside thereof; an ultraviolet processing part which has one end connected to the other end of the chlorine processing part, and has a ultraviolet lamp formed at the inside thereof in a longitudinal direction; a discharging part which is connected to the other end of the ultraviolet processing part, and has a sewage outlet in which purified sewage is discharged formed at one end and a second outlet in which a sewage sample is drawn out formed at the other end; and a measuring part which measures concentration of chlorine by using sewage sample which is drawn out from the first outlet and the second outlet.

Description

[0001] Hybrid water treatment device [0002]

More particularly, the present invention relates to a hybrid water treatment apparatus which effectively removes bacteria, viruses, trace pollutants, and refractory substances, which are difficult to be removed only by ultraviolet disinfection, using chlorine having excellent sterilizing power, To thereby prevent secondary pollution.

There is a growing need for techniques to effectively control viruses due to food poisoning accidents caused by Norovirus and Rotavirus, as well as collective health problems such as Swine flu H1N1 and Mervis virus.

Considering the characteristics of the virus that propagates through the propagation of the host (human pathogen is mostly used as a host) and the spread of the infection, the discharge facility (public treatment facility, sewage Virus control in the environment (eg, treatment facilities, wastewater treatment facilities, etc.) is the most basic method to reduce the risk of pathogenic viruses in the environment.

In the case of disinfection of effluent in Korea, the focus is on controlling E. coli. In the case of exhaust facilities discharged into rivers or the sea, there is a limitation in the use of persistent chemical disinfectants. In case of ultraviolet disinfection, Is not sufficient to control the < / RTI >

Currently, the water treatment system is divided into the water channel type and the channel type. In the water channel type, the ultraviolet ray device is installed inside the water channel in such a way that the water flows along the water channel in the treatment facility. In this case, And the amount of ultraviolet irradiation in the reactor is relatively constant.

In general, this type of water treatment facility is designed to inactivate 99.9% of bacteria by applying to sewage, but in fact, only 20% of the virus is inactivated (based on Norovirus). In order to inactivate Norovirus by 99.9% There is a problem in that it is difficult to secure economical efficiency in terms of installation and operation because the facility must be expanded 6 to 10 times.

Chlorine, on the other hand, is effective in removing viruses, but it reacts with various contaminants present in the effluent to rapidly reduce chlorine or generate carcinogens. Especially, when chlorine is released into rivers or oceans, it can directly affect ecosystem destruction Therefore, sterilization using chlorine in effluent water has a problem of causing secondary pollution.

The present invention effectively removes bacteria, viruses, micro-pollutants, and refractory substances, which are difficult to remove by ultraviolet disinfection only by using chlorine having excellent sterilizing power, and eliminates unreacted chlorine through ultraviolet treatment to prevent secondary contamination It is an object of the present invention to provide a hybrid water treatment apparatus.

In the hybrid water treatment apparatus according to the embodiment of the present invention,

A chlorine treatment section formed with a first inlet and a second inlet for introducing the sewage sample to the other end, and a stirrer for mixing the introduced sewage and chlorine; An ultraviolet processing unit having an end connected to the other end of the chlorine treatment unit and having an ultraviolet lamp formed in the longitudinal direction; A discharge port connected to the other end of the ultraviolet processing unit, having a sewage discharge port at one end for discharging purified sewage and a second discharge port for discharging a sewage sample at the other end; And a measuring unit for measuring chlorine concentration using the sewage water samples drawn from the first outlet and the second outlet.

According to one aspect of the present invention, the ultraviolet ray processing unit includes at least two pairs of ultraviolet ray reaction tubes stacked upward and connected in parallel and arranged in parallel, wherein the ultraviolet ray lamps are arranged in the at least two pairs of ultraviolet ray reaction tubes Wherein a plurality of ultraviolet lamps are formed on a first virtual concentric circle inside the ultraviolet ray tube and the remaining ones are formed on a second virtual concentric circle having a different diameter from the first virtual concentric circle, The plurality of ultraviolet lamps formed on the first and second virtual concentric circles are formed to be shifted at different angles with respect to the center of the first and second virtual concentric circles.

According to one aspect of the present invention, the chlorination section and the discharge section include a stop valve for controlling the flow rate.

According to one aspect of the present invention, the ultraviolet processing unit includes an ultraviolet sensor for measuring the intensity of the ultraviolet lamp.

According to one aspect of the present invention, there is provided an apparatus for purifying chlorine, comprising: a chlorine storage section for storing chlorine; and a supply pump for pumping chlorine stored in the chlorine storage section and supplying the chlorine to the chlorine inlet.

According to one aspect of the present invention, the chlorination section and the discharge section include a stop valve for controlling the flow rate, and the chlorination section further includes a flow meter or a flow rate sensor, Or a control unit for controlling the operation of the stop valve.

According to one aspect of the present invention, the chlorine treatment section and the discharge section include a stop valve for controlling the flow rate, and the chlorine treatment section further includes a flow meter or a flow rate sensor, And a control unit for generating the control signal.

Other specific embodiments of various aspects of the present invention are included in the detailed description below.

According to the embodiment of the present invention, it is possible to effectively remove bacteria, viruses, trace pollutants, refractory substances and the like which are difficult to remove by ultraviolet disinfection only by using chlorine having excellent sterilizing power, and to remove unreacted chlorine through UV treatment, Pollution can be prevented.

1 is a view showing a hybrid water treatment apparatus according to an embodiment of the present invention.
FIG. 2 is a photograph showing a chlorine treatment section in which a stirring blade is formed. FIG.
3 is a perspective view showing an ultraviolet processing unit.
4 is a cross-sectional view showing a plurality of ultraviolet lamps disposed in an ultraviolet reaction tube.

The present invention is capable of various modifications and various embodiments and is intended to illustrate and describe the specific embodiments in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present invention, terms such as "comprises" or "having" are used to designate the presence of stated features, integers, steps, operations, elements, components, or combinations thereof, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof. Hereinafter, a hybrid water treatment apparatus according to an embodiment of the present invention will be described with reference to the drawings.

1 is a view showing a hybrid water treatment apparatus according to an embodiment of the present invention. FIG. 2 is a photograph showing a chlorine treatment section in which a stirring blade is formed. FIG. 3 is a perspective view showing an ultraviolet processing unit. 4 is a cross-sectional view showing a plurality of ultraviolet lamps disposed in an ultraviolet reaction tube.

The hybrid water treatment apparatus of the present invention effectively removes bacteria, viruses, trace pollutants, and refractory substances, which are difficult to be removed only by ultraviolet disinfection, by using hypochlorous acid (HOCl) having excellent sterilizing power, Which is a hybrid water treatment device capable of preventing secondary contamination.

1, a hybrid water treatment apparatus according to an embodiment of the present invention includes a chlorine treatment unit 100, an ultraviolet treatment unit 200, a discharge unit 300, and a measurement unit 400 .

Sodium hypochlorite (NaOCl) or chlorine (Cl2) reacts with water to form hypochlorous acid (HOCl) as shown below. Hypochlorous acid (HOCl) is a free residual chlorine and has a strong germicidal effect. In the following description, sodium hypochlorite (NaOCl) and chlorine (Cl2) are collectively referred to as " chlorine ".

NaOCl + H ₂ O ⇔ HOCl + NaOH (1)

Cl ₂ + H ₂ O ⇔ HOCl + HCl (2)

HOCl ⇔ OCl ^- + H ⁺ (3)

The chlorine treating unit 100 receives the chlorine, reacts the chlorine with water, and sterilizes the sewage introduced through the sewage inlet 110 with hypochlorous acid (HOCl) generated.

The chlorine treatment unit 100 may be formed of a hollow pipe having a predetermined shape, for example, a cylindrical shape, and the sewage inlet 110 is formed by opening one end of the hollow pipe.

A chlorine inlet 120 is formed near the sewage inlet 110. For example, the chlorine inlet 120 may be formed in one or a plurality of holes on one upper surface of the hollow pipe. The number of the chlorine inlet ports 120 can be selectively designed according to the water treatment capacity to be treated. In the present invention, although it is called "chlorine inlet 120", it is possible to inject sodium hypochlorite instead of only chlorine.

The chlorine inlet 120 is connected to the feed pump 620 and the chlorine storage 610. The feed pump 620 pumps the chlorine stored in the chlorine storage 610 and supplies it to the chlorine inlet 120.

At the other end of the chlorine treatment unit 100, a first outflow port 130 for extracting a sewage sample is formed. The first outflow port 130 draws out a sewage sample flowing in the chlorination unit 100. The extracted sewage sample is sent to the measuring unit 400, and the measuring unit 400 measures the amount of chlorine contained in the sewage.

A stirrer (140) is formed in the chlorine treatment part (100). The stirring wing 140 has an inclined surface for blocking a part of the hollow pipe and has an opening to allow the remaining portion to pass therethrough so that the sewage introduced into the sewage inlet 110 and chlorine injected into the chlorine inlet 120 are well- Mix.

The stirring wing 140 may be installed in a fixed form inside the pipe or in a form rotatable by the flow of sewage in the pipe.

A stop valve (150) for controlling the flow rate of sewage is formed at a predetermined portion of the chlorine treatment section (100). When the stop valve 150 is completely locked, the sewage flow inside the chlorination unit 100 is shut off to maintain the hybrid water treatment apparatus. In addition, when the flow rate of the sewage is large, the stop valve 150 is slightly opened to secure time for sterilizing chlorine and to improve ultraviolet treatment efficiency in the ultraviolet treatment unit 200. In addition, when the flow rate of the sewage water is small, the stop valve 150 can be opened more and the processing time can be shortened.

The ultraviolet ray processing unit 200 performs ultraviolet ray treatment on the sterilized sewage water through the chlorination unit 100 to sterilize remaining bacteria and viruses and remove chlorine remaining unreacted in the chlorination unit 100 to remove 2 Prevent tea pollution.

One end of the ultraviolet ray processing unit 200 is connected to the other end of the chlorination unit 100, and the ultraviolet ray lamp 210 has a length Direction. Further, a plurality of ultraviolet sensors 230 spaced a predetermined distance in the longitudinal direction are disposed. The ultraviolet sensor 230 senses the ultraviolet intensity of the ultraviolet lamp 210 so that the operator can adjust the ultraviolet intensity.

As shown in FIG. 3, the ultraviolet processing unit 200 includes at least two pairs of ultraviolet reaction tubes 201 to 206 which are stacked and connected in an upward direction and arranged in parallel. In FIG. 3, the ultraviolet reaction tubes 201 to 203 on the left side are arranged on the chlorine processing unit 100 side and the left side external processing tubes 204 to 206 on the right side are arranged on the discharge unit 300 side. A connection pipe 207 is formed between each ultraviolet reaction tube.

3, the six parallel ultraviolet reaction tubes 201 to 206 are arranged in series to provide a maximum ultraviolet processing space in a limited space. In FIG. 3, there are six ultraviolet reaction tubes, but the present invention is not limited thereto.

A plurality of ultraviolet lamps 210 are installed on one end of each of the ultraviolet reaction tubes 201 to 206. The support plate 220 of the ultraviolet reaction tube 201 directly connected to the other end of the chlorination unit 100 is provided with an opening through which chlorinated sewage can be introduced from the chlorination unit 100, The support plate of the ultraviolet reaction tube 206 directly connected to the other end is provided with an opening through which the ultraviolet treated sewage can flow to the discharge part 300.

4, some of the plurality of ultraviolet lamps 211, 212, and 213 disposed in the ultraviolet reaction tubes 201 to 206 are connected to the first virtual concentric circles C1 And the remainder 214, 215, 216 are formed on the second virtual concentric circle C2 having a different diameter from the first virtual concentric circle.

In addition, the plurality of ultraviolet lamps 211 to 216 formed in the first and second virtual concentric circles are formed at different angles with respect to the center of the first and second virtual concentric circles.

By doing so, it is possible to efficiently dispose a plurality of ultraviolet lamps in the ultraviolet ray reaction tube of a limited space, and the wastewater flowing in the ultraviolet ray tube is uniformly irradiated with ultraviolet rays.

As shown in FIG. 3, the ultraviolet reaction tubes are connected in parallel and arranged in a stacked manner in the upward direction, thereby minimizing the unevenness of the sewage flow and smoothly mixing the flows.

Meanwhile, the ultraviolet lamp 210 used in the hybrid water treatment apparatus of the present invention may use at least one of a low pressure, a low pressure-high output, a low pressure amalgam lamp, a medium pressure, and a high pressure lamp.

The low-pressure lamp consists of two tungsten filaments and a quartz tube which constitutes a vacuum space between the two filaments. Vacuum pressure in a quartz tube contains about 60 mg of mercury at a low pressure of less than 10 torr (0.013 bar). These low-pressure lamps emit a single beam at a wavelength of 253.7 nm. The output of the low-pressure lamp is very much influenced by the temperature and it takes more than 400 seconds to get the maximum output at cold or hot water temperature.

Low-pressure-high-power lamps have almost the same general characteristics as low-pressure lamps, but their power consumption and output power are about twice as high as low-pressure lamps. .

The low-pressure amalgam lamp contains about 120 mg of mercury inside the quartz tube. Compared to a low-pressure lamp, it is less influenced by water temperature and its power consumption and power are more than three times higher. The maximum output time of the lamp depends on the water temperature, but generally takes more than 800 seconds. Amalgam lamps also emit a single wavelength of ultraviolet light like low-pressure lamps.

The medium pressure lamp has a vacuum pressure of 1000 torr (1.3 bar) in a quartz tube and about 300 mg of mercury in a 3.5 kW lamp. For example, the MS-2 Coliphage has the highest ultraviolet absorption rate at 210 nm. Considering the efficient sterilization of these microorganisms, the broad-band medium-pressure lamp is actually used It has much higher sterilization efficiency.

The discharge unit 300 discharges the sterilized and unreacted residual chlorine from the ultraviolet ray processing unit 200.

The discharging unit 300 may be formed of a hollow pipe having a predetermined shape, for example, a cylindrical shape, and the sewage outlet 310 is formed by opening one end of the hollow pipe.

The other end of the discharge part 300 is connected to the other end of the ultraviolet treatment part 200, and the second outflow port 330 for drawing out the sewage sample is formed. The second outflow port 330 draws out the sewage sample discharged from the ultraviolet ray processing unit 200. The extracted sewage sample is sent to the measuring unit 400, and the measuring unit 400 measures the amount of chlorine contained in the sewage. The measurement result of the measurement unit 400 is transmitted to the control unit 500.

The control unit 500 controls the operation of the supply pump 620 so that more chlorine is injected through the chlorine inlet 120. When the amount of chlorine contained in the sewage sample drawn from the first outlet 130 is small, do. Further, in the opposite case, the operation of the feed pump 620 is controlled so that the chlorine injection amount becomes small.

A stop valve 350 for controlling the flow rate of the sewage is formed at a predetermined portion of the discharge part 300. When the stop valve 350 is completely locked, the sewage flow inside the discharge portion 300 is shut off to maintain the hybrid water treatment apparatus. In addition, when the flow rate of sewage is large, the stop valve 350 is slightly opened to improve the ultraviolet treatment efficiency in the ultraviolet treatment unit 200. Further, when the flow rate of the sewage water is small, the stop valve 150 can be opened more to shorten the discharge time.

The discharge unit 300 may further include a flow meter 320 for measuring the flow rate of the discharged sewage water. When the flow meter 320 measures the flow rate of the sewage, it transmits the measured value to the controller 500. The controller 500 controls the operation of the feed pump 620 and / or the stop valve 350 according to the measured value .

That is, if the flow rate of the sewage measured by the flow meter 320 is larger than a preset reference value, the controller 500 accelerates the operation of the supply pump 620 so that the supply of chlorine by the supply pump 620 becomes faster, If the flow rate of the sewage is smaller than the predetermined reference value, the operation of the supply pump 620 is slowed so that the supply of chlorine by the supply pump 620 is slowed.

If the flow rate of the sewage water measured by the flow meter 320 is greater than a predetermined reference value, the control unit 500 controls the stop valve 350 to reduce the sewage flow space inside the pipe, Controls the stop valve 350 so that the sewage flow space inside the pipe becomes larger.

Here, the preset reference value may be any reference flow rate, or it may be a reference flow rate subdivided into several steps. If the reference value is subdivided into several stages, control according to various flow rates can be made more accurate.

When the flow rate of the sewage measured by the flow meter 320 changes, the control unit 500 can send a notification signal to the operator. The notification signal can be light, sound, or vibration, and can be sent to the operator's smart device. In this case, the control unit 500 does not automatically control the feed pump 620 or the stop valve 350, but can manually control the operator. By doing so, it is possible to improve the water treatment efficiency according to the flow rate and to reduce the manufacturing cost.

The chlorine treatment unit 100 may include a flow meter for measuring the flow rate of the inflow sewage. The flow meter installed in the chlorination unit 100 may include a flow meter 320 of the discharge unit 300, It is possible to perform substantially the same function. At this time, the controller 500 may control the operation of the supply pump 620 and / or the stop valve 150 according to the measured value of the flow meter.

Alternatively, a flow rate sensor may be used instead of the flow meter 320. [ When the flow rate sensor senses the flow rate of the sewage and transmits a detection signal to the control unit 500, the control unit 500 can control the operation of the supply pump 620 and / or the stop valve 350 based on the detection signal .

The measuring unit 400 measures the concentration of chlorine contained in the sewage water using the sewage samples drawn out from the first and second outlets 130 and 330. The sewage sample drawn out from the first outflow port 130 is a sample from which chlorine has not been removed since it has not been passed through the ultraviolet treatment section 200 and the sewage sample drawn out from the second outflow port 330 has passed through the ultraviolet treatment section 200 Therefore, the sample is chlorine-free. The measuring unit 400 can measure the chlorine concentration from the sewage samples of the first and second outflow ports 130 and 330 to confirm whether the ultraviolet ray processing unit 200 operates properly. If the measurement result of the measuring unit 400 does not satisfy the discharge reference value, the intensity of the ultraviolet lamp 210 is adjusted to be adjusted to satisfy the discharge reference value.

The control unit 500 controls the operation of the entire hybrid water treatment apparatus, and in particular, receives the measured value of the flow meter 320 to control the operation of the supply pump 620 or the stop valve 150. Also, the measurement value of the measuring unit 400 is received and the operation of the supply pump 620 is controlled.

The operation of the hybrid water treatment apparatus according to an embodiment of the present invention will now be described.

When sewage flows into the chlorination unit 100 through the sewage inlet 110, chlorine is injected through the chlorination inlet 120. The introduced sewage and chlorine are mixed while flowing in the stirring vanes 140, and water and chlorine react to produce hypochlorous acid (HOCl). Hypochlorous acid (HOCl) sterilizes bacteria, viruses, trace contaminants, and refractory substances contained in sewage.

The sewage sterilized first with hypochlorous acid (HOCl) flows to the UV treatment unit 200 through the chlorine treatment unit 100. The primary sterilized sewage is irradiated with ultraviolet rays by the ultraviolet lamp 210 while flowing through the ultraviolet ray treatment unit 200, and the untreated chlorine contained in the sewage is removed by secondary ultraviolet rays. Ultraviolet rays irradiated from ultraviolet lamps inactivate the metabolism or proliferation of microorganisms by destroying the DNA and RNA of the microorganisms, thereby sterilizing the primary sterilized sewage. Ultraviolet rays generate radical ions in the sewage, and these radical ions react with chlorine to remove unreacted chlorine.

The sewage that has been secondarily sterilized and dechlorinated by the UV treatment unit 200 is discharged through the discharge unit 300. The measuring unit 400 measures the concentration of chlorine contained in the sewage water from the sewage samples drawn out from the first and second outflow ports 130 and 330 to check whether the ultraviolet treatment unit 200 operates properly. Of course, when the flow meter 320 is installed, the operation of the feed pump 620 and / or the stop valve 350 is controlled by the control unit 500.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit of the invention as set forth in the appended claims. The present invention can be variously modified and changed by those skilled in the art, and it is also within the scope of the present invention.

100: chlorine treatment unit 200: ultraviolet ray treatment unit
300: discharging part 400: measuring part
500:

Claims (7)

A chlorine treatment section formed with a first inlet and a second inlet for introducing the sewage sample to the other end, and a stirrer for mixing the introduced sewage and chlorine;
An ultraviolet processing unit having an end connected to the other end of the chlorine treatment unit and having an ultraviolet lamp formed in the longitudinal direction;
A discharge port connected to the other end of the ultraviolet processing unit, having a sewage discharge port at one end for discharging purified sewage and a second discharge port for discharging a sewage sample at the other end; And
And a measuring unit for measuring chlorine concentration using the sewage water samples taken out from the first outlet and the second outlet,
The hybrid water treatment apparatus comprising:
The ultraviolet ray treatment apparatus according to claim 1,
At least two pairs of ultraviolet reaction tubes stacked and connected in an upward direction and arranged in parallel,
Wherein the ultraviolet lamps are formed in a plurality of at least two pairs of ultraviolet reaction tubes,
Wherein some of the plurality of ultraviolet lamps are formed on a first virtual concentric circle inside the ultraviolet ray tube and the remainder are formed on a second virtual concentric circle having a different diameter from the first virtual concentric circle, Wherein the plurality of ultraviolet lamps formed on the virtual concentric circle are formed to be shifted at different angles with respect to the center of the first and second virtual concentric circles.
The method according to claim 1,
Wherein the chlorine treatment section and the discharge section include a stop valve for controlling the flow rate.
The ultraviolet ray treatment apparatus according to claim 1,
And an ultraviolet sensor for measuring the intensity of the ultraviolet lamp.
The method according to claim 1,
A chlorine storage section for storing chlorine,
A chlorine storage unit for storing the chlorine stored in the chlorine storage unit;
And a controller for controlling the hybrid water treatment system.
The method of claim 5,
Wherein the chlorination section and the discharge section include a stop valve for controlling the flow rate,
Wherein the chlorine treatment section further comprises a flow meter or a flow rate sensor,
A control unit for controlling the operation of the supply pump or the stop valve according to the measured value of the flow meter or the flow rate sensor,
And a controller for controlling the hybrid water treatment system.
The method of claim 5,
Wherein the chlorination section and the discharge section include a stop valve for controlling the flow rate,
Wherein the chlorine treatment section further comprises a flow meter or a flow rate sensor,
A controller for generating a notification signal according to the measured value of the flow meter or the flow rate sensor,
And a controller for controlling the hybrid water treatment system.

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