KR102162077B1 - Odor removal device for wastewater and sewage disposal plant - Google Patents

Abstract

The present invention relates to an odor removal device for a sewage and manure treatment plant, comprising: an odor collection pipe which collects and supplies odors from a sewage and manure treatment plant; a cleaning tower which sprays washing water on the odor to clean the same and discharges the clean exhaust gas from which the odor is cleaned to the outside; a main water tank including a first water tank for storing a cleaning liquid falling on the cleaning tower with a partition wall installed therein, and a second tank for storing the cleaning liquid overflowing from the first tank to the upper part of the partition wall; an ozone bubble generation unit which pumps the cleaning liquid of the second tank to generate OH-ranical ozone bubble water, and supplies the generated ozone bubble water to the second tank again; a deodorizing unit for spray-mixing the ozone bubble water generated in the ozone bubble generating unit with the odor introduced through the odor collection pipe, and activating the oxidation decomposition of the odor by microwave to firstly deodorize; a water spraying unit for secondary deodorization by mixing the cleaning liquid pumped from the second tank and the odor firstly deodorized by the deodorizing unit; and a bubble water tank for receiving the washing water mixed with the odor from the water spraying unit directly into the water, deodorizing the same in the form of bubbles, and supplying the same to the washing tower, wherein the ozone bubble generation unit branches and supplies the ozone bubble water to the deodorizing unit, and the washing water of the second tank is further supplied to the cleaning tower.

Description

Sewage and wastewater treatment plant odor removal device {ODOR REMOVAL DEVICE FOR WASTEWATER AND SEWAGE DISPOSAL PLANT}

The present invention relates to an apparatus for removing odor in a wastewater and excreta treatment plant, and more particularly, by heating OH-ranical ozone bubble water by microwave to activate oxidative decomposition of odor components to first deodorize odors and continuously 1 The secondary deodorized odor is mixed with washing water containing ozone bubble water to deodorize the secondary, while the secondary deodorized odor is continuously supplied to the water of the bubble tank to deodorize the third stage in the form of bubbles, and the remaining deodorized third The present invention relates to an apparatus for removing odor in a wastewater and excreta treatment plant by configuring the odor to be supplied to the washing tower so that it can be finally discharged in the form of exhaust gas in a clean state through a wet column and a scrubber in the washing tower.

Generally speaking, odor refers to a odor that stimulates a person's nervous system and causes mental and physical damage.

These odor-causing substances are very diverse depending on the source, and sewage treatment plants, incineration plants, food waste treatment facilities, waste landfills, compost manufacturing facilities, oil refineries, chemical plants, manure and livestock wastewater treatment plants, etc. are considered as major sources of odor in cities. .

Since the odor generated from the odor generating facility is caused by decaying substances or various volatile organic compounds, it not only causes discomfort, but is also harmful to the human body, and there are many problems ranging from a decrease in efficiency or an increase in safety accidents due to a decrease in concentration. do.

As such odor components, ammonia, methyl mercaptan, hydrogen sulfide, methyl sulfide, methyl disulfide, trimethylamine, acetaldehyde, and styrene are regulated and regulated as legally regulated substances.

Malodorous substances can be classified into basic, acidic and neutral systems depending on the pH. For example, ammonia and trimethylamine belong to the basic system, hydrogen sulfide, methyl mercaptan, propionic acid, normal butyric acid, isovaleric acid, etc. belong to the acidic system, and methyl sulfide, methyl disulfide, acetaldehyde, etc. belong to the neutral system. Belongs.

Conventional methods for removing such malodorous substances are largely classified into physical, chemical and biological treatment methods, and currently mainly used methods include combustion methods, washing methods, oxidation methods, adsorption methods, and microbial treatment methods.

Of these, the combustion method is effective in removing almost all flammable odor components, but the fuel cost or maintenance cost required for catalyst replacement is expensive, and if the operation management is neglected, nitrogen oxides are generated and there is a risk of explosion.

The adsorption method is a method of removing odors using activated carbon. When various odor components accumulate in the pores of activated carbon and are adsorbed in a saturated state, there is no more deodorizing effect and the odor begins to flow out. When the concentration of the target material is high, there is a disadvantage in that the concentration is reduced by performing pretreatment steps such as washing, absorption, cooling, and condensation, and then activated carbon adsorption is performed.

In addition, the microbial treatment method is a method of decomposing the adsorbed odor components using microorganisms when the odor passes through wood debris or soil. If the growth conditions of the microorganism are properly established, the ability to remove odor is excellent and secondary pollutants are generated. On the other hand, it takes up a lot of land and takes a lot of time.

In addition, the cleaning method is a method of deodorizing the odor gas by washing it with water, acid, or alkali aqueous solution, and has the advantage of relatively simple equipment and low operating cost, but the application range of odor components is narrow and the effect of odor removal is low. have.

In addition, as an oxidation method, there is a "liquid regeneration type odor reduction device (Korean Patent Registration No. 10-1553927)", which uses oxidation to oxidize and remove odor components. It consumes little power and is easy to maintain, so it has a large capacity. Although it is relatively effective in removing gas from the gas, the application range is small, and the size of the cleaning tower is enlarged.

Accordingly, there is a need for a hybrid type odor removal device having the advantages of a cleaning method and an oxidation method capable of minimizing the size of the cleaning tower and increasing the odor removal efficiency.

Korean Patent Registration No. 10-1553927

The present invention was devised in view of the above problems, and the first object of the present invention is to first deodorize odors by activating oxidative decomposition of odor components by heating OH-ranical ozone bubble water by microwave. , The odor that has been continuously deodorized first is mixed with washing water containing ozone bubble water to deodorize it secondarily, while the odor that has been continuously deodorized secondarily is supplied to the water of the bubble tank to deodorize the third time in the form of bubbles, and 3 It is to provide a wastewater and excreta treatment plant odor removal device that is configured to supply the residual odor deodorized from the car to the cleaning tower, so that it can be finally discharged in the form of clean exhaust gas through a wet column and a scrubber in the cleaning tower. .

The second object of the present invention is to minimize the size of the washing tower by removing 80 to 90% of odors through a magnetron, water spray pipe, and bubble bath without expensive equipment, and finally deodorizing odors through the washing tower. It is to provide a device for removing odors from wastewater and manure treatment plants.

According to the characteristics for achieving the above object, the first invention relates to a device for removing odor in a wastewater and excreta treatment plant, and for this purpose, an odor collection pipe for collecting and supplying odors in a wastewater and excreta treatment plant; And, cleaning against odors. A washing tower for washing by spraying water and discharging a clean exhaust gas from which odor is washed to the outside; and a first water tank for storing a washing liquid falling on the washing tower around a partition wall installed therein, and the first The main water tank consisting of a second water tank for storing the cleaning liquid flowing from the water tank to the upper part of the partition wall; And, by pumping the cleaning liquid in the second water tank to generate OH-ranical ozone bubble water, and the generated ozone bubble water 2 The ozone bubble generation unit resupplied to the tank; And, the ozone bubble water generated by the ozone bubble generation unit is spray-mixed with the odor introduced through the odor collection pipe, and the oxidation decomposition of the odor is activated by microwaves to be A deodorizing unit for deodorizing; And, a water spray unit for secondary deodorization by mixing the cleaning liquid pumped from the second tank and the odor first deodorized by the deodorizing unit; And a bubble tank for receiving the washing water mixed with the odor from the water spraying unit directly into the water, deodorizing it in the form of bubbles, and supplying it to the washing tower, wherein the ozone bubble generating unit deodorizes the ozone bubble water. It is supplied by branching to the part, and the washing water of the second tank is further supplied to the washing tower, and the deodorizing unit heats the particles of the ozone water bubble water through microwave to activate the reaction with the odor, and the odor component by OH-radicals It characterized in that it is made to accelerate the oxidative decomposition of.

In the second invention, in the first invention, the deodorization unit includes a chamber in which an odor collection pipe is connected to one side, a magnetron connected to a side of the chamber to emit microwaves, and a spiral along the direction of the odor on the inner wall of the chamber. It consists of a reflector installed and an aerosol spraying section that sprays the ozone bubble water branched from the ozone bubble generating section into an aerosol state, and the reflecting plate diffuses microwaves to increase the heating rate and heat generation of the aerosol spray particles while increasing A plurality of through holes are further formed to diffuse the odor, and the aerosol spray unit is configured to delay the discharge of the odor by spraying in a direction opposite to the discharge direction of the odor from the other side of the chamber.

In the third invention, in the first invention, the water spraying part is composed of a water pipe receiving the washing water of the second water tank through a pump, and a discharge pipe extending to the discharge side of the water pipe and connected to the deodorization part, The discharge pipe is formed to have a relatively smaller inner diameter than the water pipe so as to lower the pressure, and is configured to suck the odor in the deodorization part, and has a length of at least twice that of the water pipe 61.

In the fourth invention, in the first invention, a plurality of perforated plates are further coupled to the inside of the bubble tank to relieve the discharge pressure of the washing water, and the through holes of each perforated plate gradually decrease in diameter from one side to the other. Is composed.

The fifth invention is characterized in that, in the first invention, the washing tower comprises a single wet column and a single wet scrubber disposed above the wet column and spraying the washing water in the first water tank.

In the sixth invention, in the first invention, the bubble tank is configured to be supplemented with washing water in the second tank, discharge contaminated water to the first tank to balance water quality, and the partition wall of the main tank is It is composed of a filter filter, characterized in that the deodorizing unit is connected to the first water tank to discharge contaminated water.

According to the apparatus for removing odor in wastewater and excreta treatment plant according to the present invention, there is an effect of securing the stability of odor removal efficiency by deodorizing odors four times through an oxidation method and a washing method.

In addition, without expensive equipment, 80 to 90% of odors are removed through a magnetron, a water spray pipe, and a bubble bath, and finally, odors are deodorized through the washing tower, thereby minimizing the size of the washing tower.

In addition, there is an effect of minimizing energy consumption of operating facilities by introducing odors using the pumping pressure of the water jet.

1 is an overall configuration diagram of a sewage and manure treatment plant odor removal device according to the present invention,
2 is a detailed configuration diagram of a deodorizing unit extracted from FIG. 1,
3 is a detailed configuration diagram showing a bubble tank extracted from FIG. 1;

The following objects, other objects, features, and advantages of the present invention will be easily understood through the following preferred embodiments related to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms.

Rather, the embodiments introduced herein are provided so that the disclosed content may be thorough and complete, and the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

The embodiments described and illustrated herein also include complementary embodiments thereof.

In this specification, the singular form also includes the plural form unless specifically stated in the phrase. As used in the specification, "comprise" and/or "comprising" does not exclude the presence or addition of one or more other components.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific contents have been prepared to more specifically describe the invention and to aid understanding. However, readers who have knowledge in this field enough to understand the present invention can recognize that it can be used without these various specific contents. In some instances, it should be noted in advance that parts that are commonly known in describing the invention and are not significantly related to the invention are not described in order to avoid confusion in describing the invention.

Hereinafter, an apparatus for removing odor in a wastewater and manure treatment plant according to the present invention will be described in detail together with the accompanying drawings.

1 is an overall configuration diagram of an apparatus for removing odor in a sewage and excreta treatment plant according to the present invention, FIG. 2 is a detailed configuration diagram of a deodorization unit extracted from FIG. 1, and FIG. 3 is a detailed configuration diagram showing a bubble tank extracted from FIG. to be.

1 to 3, in the present invention, the OH-ranical ozone bubble water is heated by microwave to activate oxidative decomposition of malodorous components to first deodorize the malodor, and continuously first deodorize the malodor. Is mixed with washing water containing ozone bubble water to secondarily deodorize it, while continuously supplying the secondly deodorized odor to the water of the bubble bath to deodorize the third time in the form of bubbles, and also to remove the remaining odor from the third deodorant The present invention relates to a sewage and excreta treatment plant odor removal device that is configured to be supplied to the cleaning tower and finally discharged in the form of clean exhaust gas through a wet column and a scrubber in the cleaning tower.

Sewage and wastewater treatment plant odor removal device of the present invention is largely a deodorization unit 50, a water spray unit 60, a bubble water tank 70, a washing tower 20, the main water tank 30, and ozone bubble generation It consists of part 40.

Here, the deodorizing unit 50 serves to primarily deodorize odors by activating oxidative decomposition of odor components by heating the OH-ranical ozone bubble water by microwave.

The deodorizing unit 50 is configured to spray-mix the ozone bubble water generated in the ozone bubble generation unit 40 with the odor introduced through the odor collection pipe 10 and generate microwaves.

In more detail, the deodorizing unit 50 includes a chamber 51 to which the odor collecting pipe 10 is connected to one side, a magnetron 52 connected to a side of the chamber 51 to generate microwaves, and the chamber A reflecting plate 511 spirally installed along the direction of the odor on the inner wall of 51, and an aerosol spraying unit 53 for spraying the ozone bubble water branched and supplied from the ozone bubble generation unit 40 into an aerosol state. Is composed.

Here, the reflector 511 functions to increase the mixing by contacting the sprayed aerosol-type ozone bubble water by increasing the residence time by turning the odor.

In addition, a plurality of through holes H for diffusing microwaves throughout the chamber 51 are further formed in the reflective plate 511.

The reflector 511 diffuses the microwave oscillated from the magnetron 52 to increase the amplitude, and synchronizes the expanded amplitude and the particles of the ozone bubble number (electric dipole) to increase the heating rate and the degree of heat generation. It also serves as an additional function.

In addition, the aerosol spray unit 53 sprays the ozone bubble water branched and supplied from the ozone bubble generation unit 40 in an aerosol state, and is sprayed in a direction opposite to the discharging direction of the odor from the other side of the chamber 51 As a result, it is configured to be able to delay the discharge of odors, and thereby promote oxidative decomposition of odor components.

In addition, it is generally known that when the residence time of air is set at 600 to 800°C for 0.5 seconds or more, odors contained in the air are significantly removed. Accordingly, the odor in the chamber 51 is instantaneously increased at 600 to 800° C. by microwaves, so that the deodorizing effect of the odor can be further promoted apart from the oxidative decomposition of the ozone bubble water.

Therefore, the deodorization unit 50 not only deodorizes by thermal decomposition of odors, but also heats ozone bubble water particles heated through microwaves by spraying ozone bubble water in an aerosol state, thereby preventing oxidative decomposition by OH-radicals. By activating it, it functions to deodorize more than 50% of odor components.

On the other hand, the main water tank 30 includes a first water tank 31 for storing the cleaning liquid falling on the cleaning tower 20 with the partition wall 33 installed therein, and the partition wall 33 in the first water tank 31. It consists of a second water tank 32 that stores the washing liquid flowing to the top of the.

Here, the first water tank 31 is configured to precipitate odor components and foreign substances and receive contaminated water in the deodorization unit 50 and the bubble water tank 70, and a drain pipe capable of carrying out washing water to the outside. (34) can be connected.

In addition, the second water tank 32 is configured to supply the washing water stored therein to the ozone bubble generator 40 to receive the generated ozone bubble water again, so that the concentration of ozone can be continuously increased. This is possible due to the high solubility of ozone water in a bubbling manner.

As a result, the second tank 32 having high solubility of ozone water is supplied to the water spraying unit 60, the bubble tank 70, and the washing tower 20 to provide a structure capable of continuously deodorizing odor components. The water level sensor (not shown) may be further coupled so that the time constant is directly supplied so that the flow rate of the washing water can be automatically adjusted.

In addition, the partition wall 33 in the main water tank 30 is composed of a filtration filter to prevent the inflow of odor components and foreign substances precipitated in the first water tank 31.

Meanwhile, the ozone bubble generation unit 40 pumps water into the second tank 32 to generate OH-ranical ozone bubble water, and resupplies the generated ozone bubble water to the second tank 32.

In more detail, the ozone bubble generation unit 40 generates ozone bubble water by mixing the ozone generation unit 41 and the ozone generated in the ozone generation unit 41 and the washing water of the second tank 32. It consists of a bubble generator (42).

Accordingly, the ozone bubble generation unit 40 not only increases the dissolved concentration of ozone (OH-ranical) in the second tank 32, but also supplies a part of the generated ozone bubble water to the deodorization unit 50 Thus, it is configured to promote oxidative decomposition of odors in the deodorizing unit 50.

On the other hand, the water spraying unit 60 functions to mix the odors first deodorized by the deodorizing unit 50 with washing water in which ozone bubble water is dissolved, and send them to the water of the bubble bath 70.

The water spraying part 60 extends to the end of the water pipe 61 to receive the washing water in the second water tank 32 through a pump and is mixed with the washing water to be discharged. It consists of a discharge pipe 62 that is connected to the deodorizing unit 50 to be able to.

At this time, the discharge pipe 62 is formed to have a relatively smaller inner diameter than the water pipe 61 so that the pressure is lowered, so that the odor in the deodorization unit 50 can be automatically sucked.

More specifically, as the inner diameter of the discharge pipe 62 is relatively smaller than the inner diameter of the water pipe 61, the pressure of the water flowing inside becomes smaller (the pressure head is ↓), and the speed increases (the speed head is ↑). By using Bernoulli's theorem, it functions so that the primary deodorized odor in the deodorizing unit 50 is mixed with the washing water and then discharged.

In addition, since the water spraying unit 60 sucks the odor of the deodorizing unit 50, a negative pressure is generated inside the deodorizing unit and automatically introduces the odor of the odor collecting pipe 10, so a separate blower is not required. A structure that can save energy is prepared.

In addition, the discharge pipe 62 has a length of at least twice that of the water pipe 61, and increases the path of the washing water mixed with the odor in the discharge pipe to further increase the deodorizing effect to further deodorize.

The bubble water tank 70 receives and dissolves the washing water including the odor of the water spraying unit in water, dissolves it, and discharges it in the form of bubbles to perform third deodorization.

At this time, the bubble water tank 70 is further coupled with a plurality of perforated plates 71, and the through holes H of each perforated plate 71 are configured to gradually decrease in diameter from one side to the other side, so that the discharge pressure of the washing water ( By reducing the flow rate), the oxidative decomposition effect of the odor discharged in the form of bubbles can be increased.

In addition, the bubble water tank 70 is supplemented with the washing water of the second water tank 32 and discharges contaminated water to the first water tank 31 so that the water quality can be balanced.

The washing tower 20 functions to discharge the third deodorized odor as a clean exhaust gas after deodorizing and washing the third stage.

The cleaning tower 20 includes a wet column 21 for adsorbing the third deodorized residual odor, and a wet scrubber disposed on the top of the wet column 21 to spray the cleaning water in the first tank 31 ( 22).

Here, the material to be filled in the wet column 21 is not limited, but a known filler capable of adsorbing and decomposing malodorous components is used.

Usually, the wet scrubber 22 and the wet column 21 in the washing tower 20 are installed in at least two stages to increase the odor removal efficiency, but the present invention is because the thirdly deodorized odor flows into the washing tower 20. There is an effect of reducing the number of wet scrubber 22 and wet column 21 to a single unit.

Hereinafter, with reference to FIG. 1, the operation of the apparatus for removing odor in the wastewater and manure treatment plant according to the present invention will be briefly described.

First, the odor of the sewage and manure treatment plant is supplied to the deodorization unit 50 through the odor collection pipe 10.

In the deodorization unit 50, the ozone bubble water generated by the ozone bubble generation unit 40 is sprayed on the introduced odor, and at the same time, the ozone bubble water particles are heated by microwaves to promote oxidative decomposition of odor components to reduce odor. To seize the car.

In addition, the primary deodorized odor is sucked into the discharge pipe 62 of the water spray unit 60 and is secondarily deodorized by mixing with the washing water in the second water tank 32.

The secondary deodorized odor is discharged into the water of the bubble water tank 70 in which the washing water of the second water tank 32 is stored, and the third deodorant is discharged in the form of bubbles.

Finally, the third deodorized odor is discharged as exhaust gas in a clean state through a wet column 21 and a wet scrubber 22 in the cleaning tower 20.

Since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical spirit of the present invention, various equivalents that can replace them at the time of application And it should be understood that there may be variations.

10: odor collection pipe
20: washing tower 21: wet column 22: wet scrubber
30: main tank 31: first tank 32: second tank
33: bulkhead 34: drain pipe
40: ozone bubble generation unit 41: ozone generation unit 42: bubble generator
50: deodorant 51: chamber 511: reflector
52: magnetron 53: aerosol injection unit
60: water injection unit 61: water pipe 62: discharge pipe
70: bubble tank 71: perforated plate
H: through hole

Claims (6)

Odor collection pipes 10 for collecting and supplying odors from sewage and manure treatment plants;
A washing tower (20) for washing by spraying washing water on the malodor and discharging the clean exhaust gas from which the malodor is washed to the outside;
A first water tank 31 that stores the washing liquid falling on the washing tower 20 centering on the partition wall 33 installed therein, and the washing liquid overflowing from the first water tank 31 to the top of the partition wall 33 is stored. The main water tank 30 consisting of a second water tank 32 to let;
An ozone bubble generation unit 40 for pumping the cleaning liquid in the second tank 32 to generate OH-ranical ozone bubble water, and for resupplying the generated ozone bubble water to the second tank 32;
A deodorizing unit 50 for primary deodorization by spray-mixing the ozone bubble water generated in the ozone bubble generation unit 40 with the odor introduced through the odor collecting pipe 10, and activating the oxidative decomposition of the odor by microwave ;
A water spray unit 60 for secondary deodorization by mixing the cleaning liquid pumped from the second tank 32 and the odor first deodorized by the deodorization unit 50; And
Containing; including; a bubble water tank 70 for receiving the washing water sent from the water spraying unit 60 directly into the water, deodorizing it in the form of bubbles, and supplying it to the washing tower 20,
The ozone bubble generation unit 40 supplies ozone bubble water by branching it to the deodorization unit 50,
The washing water of the second water tank 32 is supplied to the washing tower 20,
The deodorizing unit 50 is a wastewater and excreta treatment plant, characterized in that it is made to promote the oxidative decomposition of odor components by OH-radicals by heating particles of ozone water bubble water through microwaves to activate a reaction with odor Odor removal device.
The method of claim 1,
The deodorizing part 50 includes a chamber 51 to which the odor collecting pipe 10 is connected to one side, a magnetron 52 connected to a side of the chamber 51 to generate microwaves, and the chamber 51 Consisting of a reflecting plate 511 spirally installed on the inner wall along the direction of the odor, and an aerosol spraying unit 53 for spraying the ozone bubble water branched and supplied from the ozone bubble generation unit 40 into an aerosol state,
The reflective plate 511 is further formed with a plurality of through holes (H) for diffusing microwaves while increasing the heating rate and heat generation degree of the aerosol spray particles by diffusely reflecting microwaves,
The aerosol spray unit 53 is a wastewater and excreta treatment plant odor removal device, characterized in that it is configured to delay the discharge of the odor by spraying in the direction opposite to the discharge direction of the odor from the other side of the chamber (51).
The method of claim 1,
The water spraying unit 60 includes a water pipe 61 receiving the washing water of the second water tank 32 through a pump, and extending to the discharge side of the water pipe 61 and connected to the deodorizing unit 50. Consisting of a discharge pipe 62,
The discharge pipe 62 is formed to have a relatively smaller inner diameter than the water pipe 61 so as to lower the pressure, and is configured to suck the odor in the deodorization unit 50, and is more than twice as long as the water pipe 61 Sewage and manure treatment plant odor removal device, characterized in that having a.
The method of claim 1,
A plurality of perforated plates 71 are further coupled to the inside of the bubble water tank 70 to relieve the discharge pressure of the washing water,
Sewage wastewater and excreta treatment plant odor removal device, characterized in that the through hole of each of the perforated plate 71 is configured to gradually decrease in diameter from one side to the other side.
The method of claim 1,
The washing tower 20 is composed of a single wet column 21 and a single wet scrubber 22 disposed above the wet column 21 to spray the washing water in the first water tank 31. Sewage and manure treatment plant odor removal device characterized by.
The method of claim 1,
The bubble water tank 70 is configured to be supplemented with washing water in the second water tank 32 and to discharge contaminated water to the first water tank 31 to balance water quality,
The partition wall 33 of the main water tank 30 is composed of a filtration filter,
The deodorizing unit 50 is a wastewater and manure treatment plant odor removal device, characterized in that connected to the first water tank 31 to discharge contaminated water.

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