KR102473760B1 - Deodorization apparatus using wet scrubber - Google Patents

Abstract

The present invention relates to a deodorization device using a wet scrubber, and the deodorization device using a wet scrubber according to the present invention is a reverse osmosis membrane filtration that produces washing water from which salts are removed from sewage treatment water using a reverse osmosis phenomenon and concentrated water containing salt, respectively. unit; a hypochlorous acid generating unit that electrolyzes the concentrated water generated in the reverse osmosis membrane filtration unit to generate sodium hypochlorite sterilized water; and a wet scrubber for spraying the washing water generated in the reverse osmosis membrane filtration unit and the sodium hypochlorite sterilizing water generated in the hypochlorous acid generation unit into contaminated air to remove odors from the polluted air.

Description

Deodorization apparatus using wet scrubber

The present invention relates to a deodorization device using a wet scrubber, and more particularly, to separate washing wastewater discharged from a wet scrubber into desalted washing water and concentrated water containing salt, and using the concentrated water containing salt The present invention relates to a deodorization device using a wet scrubber that can generate sodium hypochlorite disinfectant water and then provide the washing water and disinfectant water to a wet scrubber, which can reduce chemical costs and treat odor in an eco-friendly way.

Due to population growth and the development of the tertiary industry, the concentration of urban population, the increase in consumption activities, the improvement of living standards, and the development of science and technology increase the amount of pollutants and reduce the natural purification capacity. The seriousness of environmental pollution. is increasingly emerging as a social problem, and in particular, rapid social and economic growth causes an increase in the amount of waste and a diversification of waste properties, which not only deteriorates the quality of the environment but also causes mental stress to humans due to odor.

Unpleasant odors, that is, odors, are mainly generated by various human activities, and coping with extremely low concentrations of irritating gases including nitrogen or sulfur is insufficient.

In recent years, wet scrubbers have been used to collect and purify odor-containing gases from livestock manure recycling processes and wastewater or odor-generating substances, and then discharge the purified air to the atmosphere. These wet scrubbers have a simple structure and It is widely used because it can not only process a relatively large amount of odor gas, but also absorb odor gas and collect, clean, and deodorize dust at the same time in a single device.

However, these wet scrubbers use cleaning water and disinfection water to clean the odor of pollutant gases forcibly collected by the turbo blower, and since cleaning wastewater is generated in this process, costs and facilities for purifying it are required. In addition, there is a problem that the environment is polluted when the washing wastewater is discharged as it is.

In addition, the conventional wet scrubber cleans polluted air by spraying washing water and disinfecting water in the form of a mist, and it is necessary to minimize the use of washing water and disinfecting water in order to minimize the discharge of washing wastewater.

Korean Registered Patent No. 10-2001655 (July 18, 2019)

Accordingly, an object of the present invention is to solve these conventional problems, and to provide a deodorizing device using a wet scrubber capable of environmentally friendly odor treatment while reducing chemical costs.

In addition, since micro bubbles are formed in the washing water, the amount of washing water and disinfection water can be reduced, and as the oxygen saturation of the washing water increases, the deodorization performance can be further improved by oxidizing pollutants in the air. It is to provide a deodorizing device using a scrubber.

In addition, since salt-free cleaning water is used in the wet scrubber, the odor removal effect can be improved, and sodium hypochlorite disinfection water is prepared using highly concentrated water containing salt discharged from the reverse osmosis membrane filtration unit, so it is suitable for the production of disinfection water. It is an object of the present invention to provide a deodorization device using a wet scrubber capable of preventing environmental pollution due to discharge of highly concentrated concentrated water while requiring no additional supply of chloride.

In addition, it is to provide a deodorization device using a wet scrubber capable of preventing environmental pollution due to the discharge of washing wastewater by mixing and recirculating the cleaning wastewater discharged from the wet scrubber with sewage treatment water.

The above object, according to the present invention, a reverse osmosis membrane filtration unit for producing concentrated water containing salt and washing water from which salts are removed from sewage treatment water using a reverse osmosis phenomenon, respectively; a hypochlorous acid generating unit that electrolyzes the concentrated water generated in the reverse osmosis membrane filtration unit to generate sodium hypochlorite sterilized water; And a wet scrubber for spraying the washing water generated in the reverse osmosis membrane filtration unit and the sodium hypochlorite sterilizing water generated in the hypochlorous acid generation unit into the contaminated air to remove odors from the contaminated air; by a deodorizing device using a wet scrubber comprising is achieved

The wet scrubber has an inlet for supplying polluted air into the inner space at one side of the lower part, an outlet for discharging the air passing through the inner space to the outside, and an outlet for discharging the air passing through the inner space to the outside. body part; and a washing unit spraying the washing water and the disinfecting water to the air passing through the inner space, respectively.

In addition, the cleaning unit preferably includes a first cleaning unit spraying washing water into the inner space of the main body and a second cleaning unit spraying disinfecting water into the inner space of the main body.

In addition, it is preferable that the second cleaning unit sprays the disinfecting water in a direction parallel to the air flow direction.

In addition, the cleaning unit further includes a third cleaning unit supplying washing water to the inner space, and the first, second and third cleaning units follow an air flow direction within the inner space. It is preferable to arrange them sequentially.

In addition, a washing water supply pipe for supplying washing water to the first washing part and the second washing part and a second supply pipe for supplying disinfectant water to the washing water supply pipe for supplying washing water to the second washing part are included. It is desirable to do

In addition, it is preferable to include; a micro bubble generating unit for forming micro bubbles in the washing water provided to the wet scrubber.

In addition, a flow control tank for storing cleaning wastewater between the wet scrubber and the reverse osmosis membrane filtration unit; a production tank for storing washing water between the reverse osmosis membrane filtration unit and the wet scrubber; and a pretreatment unit configured to purify the treated sewage water supplied to the reverse osmosis membrane filtration unit.

According to the present invention, a deodorization device using a wet scrubber capable of reducing chemical costs and treating odors in an environmentally friendly manner is provided.

In addition, since micro bubbles are formed in the washing water, the amount of washing water and disinfection water can be reduced, and as the oxygen saturation of the washing water increases, the deodorization performance can be further improved by oxidizing pollutants in the air. A deodorizing device using a scrubber is provided.

In addition, since salt-free cleaning water is used in the wet scrubber, the odor removal effect can be improved, and sodium hypochlorite disinfection water is prepared using highly concentrated water containing salt discharged from the reverse osmosis membrane filtration unit, so it is suitable for the production of disinfection water. Provided is a deodorizing device using a wet scrubber that does not require an additional supply of chloride and can prevent environmental pollution due to discharge of highly concentrated concentrated water.

In addition, since cleaning wastewater discharged from the wet scrubber is mixed with sewage treatment water and recycled, a deodorization device using a wet scrubber capable of preventing environmental pollution due to discharge of the cleaning wastewater is provided.

1 is a block diagram of a deodorizing device using a wet scrubber of the present invention;
2 is a configuration diagram of the wet scrubber shown in FIG. 1;

Prior to description, in various embodiments, components having the same configuration are typically described in the first embodiment using the same reference numerals, and in other embodiments, components different from those of the first embodiment will be described. do.

Hereinafter, a deodorizing device using a wet scrubber according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Among the accompanying drawings, FIG. 1 is a configuration diagram of a deodorizing device using the wet scrubber of the present invention, and FIG. 2 is a configuration diagram of the wet scrubber shown in FIG.

1 and 2, the deodorization device using the wet scrubber of the present invention includes a flow control tank 10, a pretreatment unit 20, a reverse osmosis membrane filtration unit 30, a production tank 40, and a hypochlorous acid generating unit ( 50), a wet scrubber 60 and a micro bubble generating unit 70.

The flow control tank 10 stores sewage treatment water and is connected to the wet scrubber 60 and the pretreatment unit 20 through pipes, respectively.

Here, the treated sewage water refers to raw water that can be reused, and various water resources such as sewage, wastewater, groundwater, valley water, and river water may be used in addition to sewage.

The pretreatment unit 20 may remove solid foreign substances such as impurities contained in the treated sewage water prior to supplying the treated sewage water to the reverse osmosis membrane filtration unit 30, and may be composed of a sand filtration device or the like. have.

In general, solutions having different concentrations, such as salt water and fresh water, are separated by a semi-permeable membrane, and after a certain period of time, the water of the low-concentration solution moves to the high-concentration side, resulting in a difference in water level. This phenomenon is called 'osmosis', and the difference in water level that occurs at this time is called 'osmotic pressure'. On the other hand, when a pressure higher than the osmotic pressure is applied to a high-concentration solution, water moves toward a low-concentration solution. This phenomenon is called 'reverse osmosis'.

The reverse osmosis membrane filtration unit 30 is capable of producing low-concentration washing water from which salts are removed from sewage treatment water and high-concentration concentrated water containing salts, respectively, using the reverse osmosis phenomenon as described above, and the pretreatment unit 20 and wet It is connected to the scrubber 60 through pipes, respectively. Since the detailed configuration of the reverse osmosis membrane filtration unit 30 corresponds to a general known technology, a detailed description thereof will be omitted.

The production water tank 40 is for storing washing water discharged from the reverse osmosis membrane filtration unit 30 between the reverse osmosis membrane filtration unit 30 and the wet scrubber 60, and the reverse osmosis membrane filtration unit 30 and the wet scrubber (60) and each is connected by a pipe.

The hypochlorous acid generating unit 50 is for electrolyzing the concentrated water generated in the reverse osmosis membrane filtration unit 30 to produce sodium hypochlorite sterilized water, and includes a pair of electrodes for electrolysis of the concentrated water. It may be made in the form of a diaphragm electrolysis tank, and since the detailed configuration of the electrolysis tank for producing sodium hypochlorite disinfectant water corresponds to a general known technology, a detailed description thereof will be omitted.

The wet scrubber 60 removes (deodorizes) odors of the contaminated air by spraying cleaning water and disinfection water into the moving contaminated air, and includes a body part 61, a washing part 63, a bed part 62, a filter A unit 64 and a sensor unit 65 may be included.

Here, the main body portion 61 is formed in a tubular shape, an inlet 61a for supplying polluted air to the inner space is formed at one lower end, and an outlet 61b for discharging the air passing through the inner space to the outside is formed at the upper end. It is formed in, and washing wastewater can be stored in the lower part of the inner space.

In addition, the washing unit 63 injects the washing water and the disinfecting water into the air passing through the inner space of the main body part 61, respectively, in a direction opposite to the air flow direction in the inner space of the main body part 61. a first washing part 63a for spraying washing water in a direction, disposed above the first washing part 63a and dispensing washing water and disinfecting water in a direction parallel to the air flow direction in the internal space of the main body part 61 A second washing part 63b for spraying, and a third washing part disposed above the second washing part 63b and supplying washing water in a direction opposite to the air flow direction in the inner space of the body part 61 (63c) receives the washing water from the production tank 40 and supplies the washing water to the first washing part 63a, the second washing part 63b and the third washing part 63c respectively. A line and a second supply line for supplying disinfectant water to the washing water supply line for supplying washing water to the second washing unit 63b may be included.

On the other hand, the discharge side opening of the inlet 61a provided at the lower end of one side of the main body 61 is disposed at a position lower than the water level of the washing wastewater stored in the main body 61, and accordingly, the inside of the main body 61 Contaminated air supplied to the space passes through the cleaning wastewater and moves into the inner space. As can be seen from FIG. 2 , the contaminated air supplied to the inside of the body part 61 through the inlet 61a passes through the washing wastewater stored in the lower part of the inner space of the body part 61 to clean the washing part 63 ) moves upward to the side.

The bed part 62 may be made of a sieve and polling, the filter part 64 may be made of an activated carbon filter, and the sensor part 65 may be used to detect the deodorized clean air discharged through the outlet 61b. It may be made in the form of a sensor capable of detecting a component.

On the washing water supply line for supplying washing water to the first washing part 63a and the third washing part 63c and the disinfecting water supply line for supplying disinfection water to the second washing part 63b, the flow rate can be adjusted, respectively. A control valve (V) is disposed, and a fluid pump (P) for transferring the washing water may be disposed on the washing water supply line, and the control valve (V) and the fluid pump (P) are control units (not shown). can be controlled by That is, the control unit receives a detection signal from the sensor unit 65 disposed at the outlet 61b and controls the supply flow rate of the washing water and the disinfecting water accordingly, thereby securing the deodorizing performance of the contaminated air and using the washing water and the disinfecting water. can be minimized.

For example, the control unit increases the amount of washing water discharged from the third washing unit 63c when the discharge concentration of the water-soluble material increases in association with the detection signal detected by the sensor unit 65, and When the discharge concentration increases, the amount of disinfection water discharged from the second cleaning unit 63b is increased. The amount of sterilizing water discharged from the cleaning unit 63c may be simultaneously increased, and through this, the efficiency of using the rinsing water and the sterilizing water may be improved.

On the other hand, in the present embodiment, the washing unit 63 has been described as being composed of three, but it is not limited thereto, and it may be possible to consist of two or four depending on the processing capacity of contaminated air. In addition, since the sieve and polling of the bed part 62 are the same as those used in the general wet scrubber 60, a detailed description thereof will be omitted.

A circulation pipe for discharging the washing wastewater stored in the lower part of the main body part 61 is connected to a lower part of one side of the main body part 61, and the water level of the washing wastewater can be determined by the installation height of the circulation pipe. The circulation pipe connects the body part 61 and the flow control tank 10 and transfers the washing wastewater discharged from the body part 61 to the flow control tank 10.

The microbubble generating unit 70 is disposed on the washing water supply pipe 63d to form microbubbles in the washing water, and cleans the oxygen supply unit providing air containing oxygen and the air determined in the oxygen supply unit. It may include a bubble generating unit supplying water to generate micro bubbles in the washing water.

The oxygen supply unit may be formed in the form of an air pump for sucking and providing oxygen-containing external air, or a supply tank capable of supplying oxygen or oxygen-containing air, and the bubble generating unit may be an ejector type, a venturi type, etc. Through this, microbubbles can be formed. Since the configuration for generating such microbubbles corresponds to a general known technology, a detailed description thereof will be omitted.

Now, the operation of the first embodiment of the deodorizing device using the above-described wet scrubber will be described.

First, as shown in FIG. 1, according to the deodorization device using the wet scrubber of this embodiment, the sewage treatment water stored in the flow control tank 10 passes through the pretreatment unit 20 to remove impurities such as impurities present in the sewage treatment water. After the solid foreign matter is removed, it is supplied to the reverse osmosis membrane filtration unit (30).

The reverse osmosis membrane filtration unit 30 receiving the sewage treatment water from which impurities are removed produces low-concentration washing water from which salts are removed from the sewage treatment water using reverse osmosis and high-concentration concentrated water containing salt, respectively. It is stored in the production tank 40, and the concentrated water is supplied to the hypochlorous acid generating unit 50.

The hypochlorous acid generating unit 50 electrolyzes the concentrated water containing salt provided from the reverse osmosis membrane filtration unit 30 to produce disinfected sodium hypochlorite water.

The wet scrubber 60 can deodorize polluted air by cleaning it using the washing water stored in the production tank 40 and the disinfectant water generated in the hypochlorous acid generating unit 50. On the other hand, the cleaning wastewater containing the cleaning water and disinfection water used to deodorize the polluted air may be transferred to the flow control tank 10 and reused.

That is, in this embodiment, since washing water and disinfection water can be produced using the washing waste water discharged from the wet scrubber 60, environmental pollution due to the discharge of washing waste water can be prevented.

In addition, by using the reverse osmosis phenomenon, washing water from which salt is removed from sewage treatment water and concentrated water containing salt are produced, respectively, and sodium hypochlorite disinfection water is produced using high-concentration concentrated water containing salt, so chloride for the production of disinfection water Additional supply of is unnecessary, and at the same time, environmental pollution due to discharge of highly concentrated concentrated water can be prevented.

In this way, when washing water from which salts have been removed from sewage treatment water is supplied to the wet scrubber 60 using the reverse osmosis phenomenon, since washing water of constant quality can be continuously supplied, stable deodorization performance can be provided.

Hereinafter, a process of deodorizing contaminated air in the wet scrubber 60 will be described.

As shown in FIG. 2, the contaminated air supplied to the inner space through the lower inlet 61a of the main body 61 passes through the washing wastewater and then through the outlet 61b on the upper part of the main body 61. (61) It is discharged to the outside, and in this process, the first cleaning part 63a, the second washing part 63b, and the third washing part 63c disposed along the air flow direction in the inner space of the body part 61 ) and is deodorized while being washed.

First, the first cleaning unit 63a is configured to spray the washing water downward, the second cleaning unit 63b to spray the washing water including the disinfecting water upward, and the third cleaning unit 63c to spray the washing water downward. do.

Here, the micro bubble generating unit 70 is disposed on the washing water supply pipe 63d for supplying washing water to the first washing part 63a, the second washing part 63b, and the third washing part 63c, respectively. Accordingly, the washing water becomes a state containing microbubbles.

That is, since the washing water sprayed from the first washing part 63a and the third washing part 63c and the washing water including the disinfecting water sprayed from the second washing part 63b each contain micro bubbles, the washing water In addition to reducing the amount of water used for disinfection and disinfection, as the oxygen saturation of the washing water is increased by micro bubbles, contaminants in the polluted air can be oxidized, and the deodorization performance of the polluted air can be further improved.

In particular, since the second cleaning unit 63b and the third cleaning unit 63c are disposed to face each other, contaminants are concentrated in the space between the second cleaning unit 63b and the third cleaning unit 63c. In addition, since the disinfectant water sprayed from the second cleaning unit 63b moves upward and then falls downward again, the contact distance and time with contaminated air can be increased, further increasing the deodorization efficiency. can improve

Since the bed part 62 is disposed below the washing part 63, contact between contaminated air and washing water can be increased, and an activated carbon filter part 64 is provided between the washing part 63 and the outlet 61b. Since is disposed, it is possible to finally remove harmful components or odors in the polluted air that has passed through the cleaning unit 63.

As described above, the clean air deodorized through the bed part 62, the washing part 63, and the filter part 64 is discharged to the outside of the main body part 61 through the outlet 61b provided on the upper part of the main body part 61. It is discharged.

In addition, the cleaning water and disinfecting water used for deodorization of polluted air in the wet scrubber 60 are stored as cleaning wastewater in the lower part of the main body 61 and transferred to the flow control tank 10 to be reused.

Meanwhile, the sensor unit 65 disposed at the outlet 61b detects odor components of the deodorized clean air and transmits a detection signal to the control unit. The control unit controls the supply amount of washing water through the fluid pump P on the washing water supply pipe 63d according to the detection signal detected by the sensor unit 65, or the washing water supply pipe 63d and the disinfecting water supply pipe ( 63e) the flow rate of the washing water supplied to the first washing part 63a and the third washing part 63c or the flow rate of the disinfecting water supplied to the second washing part 63b through the control valve V disposed on the You can control it. In this way, when the control unit controls the supply flow rate of the washing water and the disinfecting water according to the state of the clean air discharged from the outlet 61b, the use of the washing water and the disinfecting water can be minimized while securing the deodorizing performance of the contaminated air.

The scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms of embodiments within the scope of the appended claims. Anyone with ordinary knowledge in the art to which the invention pertains without departing from the subject matter of the invention claimed in the claims is considered to be within the scope of the claims of the present invention to various extents that can be modified.

10: flow control tank, 20: pretreatment unit, 30: reverse osmosis membrane filtration unit,
40: production tank, 50: hypochlorous acid generating unit, 60: wet scrubber,
61: main body, 61a: inlet, 61b: outlet,
62: bed part, 63: washing part, 63a: first washing part,
63b: second cleaning unit, 63c: third cleaning unit, 63d: washing water supply pipe,
63e: disinfection water supply pipe, 64: filter unit, 65: sensor unit,
V: control valve, P: fluid pump, 65: filter unit,
70: micro bubble generating unit

Claims (8)

A reverse osmosis membrane filtration unit that produces washing water from which salts are removed from sewage treatment water by reverse osmosis and concentrated water containing salt, respectively;
a hypochlorous acid generating unit that electrolyzes the concentrated water generated in the reverse osmosis membrane filtration unit to generate sodium hypochlorite sterilized water; and
A wet scrubber for removing odors from the contaminated air by spraying the washing water generated in the reverse osmosis membrane filtration unit and the sodium hypochlorite sterilizing water generated in the hypochlorous acid generating unit into the contaminated air,
The wet scrubber,
A main body portion having an inlet for supplying polluted air into the inner space at one side of the lower part, an outlet for discharging the air passing through the inner space to the outside, and storing washing wastewater in the lower part of the inner space;
A cleaning unit for spraying the cleaning water and the disinfecting water to the air passing through the inner space, respectively;
A bed part disposed under the washing part in the inner space and having a sieve;
A sensor unit for detecting components of the deodorized clean air discharged through the outlet, and
The flow rate of the washing water supplied to the washing unit is controlled through a fluid pump disposed on the washing water supply pipe supplying the washing water to the washing unit, and on the disinfecting water supply pipe supplying the disinfecting water to the washing unit. And a control unit for controlling the flow rate of the sterilizing water supplied to the cleaning unit through a control valve disposed on the
The deodorization device using a wet scrubber, characterized in that the contaminated air supplied to the inside of the main body through the inlet passes through the washing wastewater stored in the lower part of the inner space and moves upward toward the washing part. delete According to claim 1,
The deodorizing device using a wet scrubber, characterized in that the cleaning unit comprises a first cleaning unit for spraying washing water into the inner space of the main body and a second cleaning unit for spraying disinfectant water into the inner space of the main body. According to claim 3,
The deodorization device using a wet scrubber, characterized in that the second cleaning unit sprays disinfectant water in a direction parallel to the air flow direction. According to claim 3,
The cleaning unit further includes a third cleaning unit supplying washing water to the inner space, and the first, second and third cleaning units are sequentially disposed in the inner space along an air flow direction. Deodorization device using a wet scrubber, characterized in that. According to claim 3,
A washing water supply pipe supplying washing water to the first washing unit and the second washing unit, respectively, and a second supply pipe supplying disinfectant water to the washing water supply pipe supplying washing water to the second washing unit. Deodorization device using a characterized wet scrubber. According to claim 1,
A deodorization device using a wet scrubber comprising a; micro bubble generating unit for forming micro bubbles in the washing water provided to the wet scrubber. According to claim 1,
a flow control tank for storing cleaning wastewater between the wet scrubber and the reverse osmosis membrane filtration unit;
a production tank for storing washing water between the reverse osmosis membrane filtration unit and the wet scrubber; and
A deodorization device using a wet scrubber, characterized in that it comprises at least one of;

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