KR20070028498A - Bio trickling filter system for processing odor and volatile organic compounds - Google Patents

Abstract

The present invention relates to a biotrickle filter system for treating malodor and volatile organic compounds, and more particularly, has excellent microbial adhesion ability and high specific surface area in the system to maximize the removal efficiency of malodor and volatile organic compounds, and 80% In addition to having a higher porosity and a specific gravity of 1.05 to 1.20, the microorganism carrier, which is a filling medium capable of efficient backwashing, is embedded to decompose and remove odorous substances and volatile organic compounds by microorganisms so that they can be converted into stable and harmless forms. It relates to an environmentally friendly bio-trickle filter system for treating odor and volatile organic compounds.

The present invention is a first water discharge pipe is installed in the inner center of the circulating water is installed in the inner lower side of the first reaction chamber to remove the water-soluble gas by filling the media of the microorganism carrier on the support network formed a plurality of through holes, the circulation water in the upper side A second reaction chamber for supplying a second sprinkling water pipe and having a plurality of through-holes formed therein, a second reaction chamber for removing an egg / non-aqueous gas by filling a medium as a microbial carrier on a support network having a plurality of apertures, the first reaction chamber and the second reaction chamber A space chamber which is located between and fastened as a flange to each other and is empty inside, a hopper-shaped upper cover which is installed as a flange on the upper side of the second reaction chamber and has a gas outlet at the upper center thereof, and a lower side of the first reaction chamber. It is fastened and installed as a flange on the side, and a gas inlet for introducing harmful gas is formed on one side, and a circulating water outlet is formed at the lower center. Bio-cycling filter tree composed of a main body and a lower cover; A circulating water supply device for supplying circulating water to the media to grow microorganisms and dissolve water soluble gases through the first and second water pipes; In order to control the nutrient concentration, pH concentration of the circulating water introduced into the circulating water supply device and to maintain a constant water level, a stabilization controller is provided to supply nutrients, NaOH, and supplemental water, and the circulation flowed into the circulating water supply device. Water is supplied to the first and second water pipes through a first pipe and a circulating water supply valve as a pump, and a third pipe is installed between the circulating water outlet and the pump through a backwash water inlet valve. A fifth pipe is installed between the water outlet and the circulating water supply device through a circulation valve, and a fourth pipe is branched through a backwash water discharge valve on one side of the fifth pipe.

Description

Biotrickling filter system for removing odor and volatile organic compounds {Viotrickling filter system for removing odor and volatile organic compounds (VOCs)}

1 is a configuration diagram of a bio-trickle filter system for treating odor and volatile organic compounds according to the present invention.

Figure 2 (a) and (b) is a perspective view and a cross-sectional view of the media used in the bio trickling filter for treating odor and volatile organic compounds according to the present invention.

Figure 3 is a block diagram of the control unit of the bio-trickle filter for treating odor and volatile organic compounds according to the present invention.

Figure 4 is a control flow diagram of the bio-trickle filter control unit for treating odor and volatile organic compounds according to the present invention.

[Description of Symbols for Main Parts of Drawing]

7a, 7a-1: support network 7b, 7b-1: through hole

8: 4th piping 8a: 5th piping

9: 3rd pipe 10a, 10b: 1st, 2nd water pipe

11 outlet 12: top cover

13: first reaction chamber 14: space chamber

15: second reaction chamber 17: lower cover

18, 19: media 20: first pipe

21a to 21c: 1st to 3rd pressure gauge 22a, 22b: circulating water supply valve

22c: backwash water inlet valve 22d: backwash water outlet valve

22e: circulation valve 23: temperature sensor

24: pump 25: blower

26: water level sensor 27: heater

28: hydrogen ion concentration sensor 29: circulating water storage tank

30: second piping 31: nutrient supply tank

32: NaOH supply tank 33: circulating water supply tank

34a to 34d: first to third solenoid valves

40: bio trickling filter body 50: circulating water supply device

60: stabilization control device 71: control panel

72: MPU 73: Drive

The present invention relates to a bio trickling filter system for treating odors and volatile organic compounds (VOCs), and more particularly, has excellent microbial adhesion ability and high specific surface area in the system to maximize the removal efficiency of odors and volatile organic compounds. It has a porosity of more than 80% and has a specific gravity of 1.05-1.20, so it contains a microorganism carrier, which is a filling medium capable of efficient backwashing, and decomposes and removes odor components and volatile organic compounds by microorganisms. The present invention relates to a bio-trickle filter system for the treatment of environmentally friendly odors and volatile organic compounds that can be converted and discharged into materials.

In general, odorous substances and harmful pollutants are formed in paint plants, petrochemical plants, printing plants, automobile coating plants, food waste recycling facilities, aquatic product processing facilities, and wastewater treatment plants. As a general method for removing substances, acidic water is sprayed in an open indoor storage tank or fermentation aging tank to neutralize and oxidize alkaline gases such as ammonia and amines contained in odorous gases and harmful gases and neutral oxidizing gases.

The general removal method as described above always contains acid gases such as hydrogen sulfide and mercaptans, neutral reducing gas and volatile organic compounds in which odor gas and noxious gas are not removed by acidic water. And there is a problem that the working conditions of the worker is poor by the volatile organic compounds and pollute the environment.

In addition, a large amount of volatile organic compounds are produced in paint plants, petrochemical plants, printing plants, and automobile coating plants, and these volatile organic compounds generally refer to hydrocarbon compounds having a vapor pressure of 0.02 psi or more or a boiling point of less than 100 ° C. Air pollutant-related substances are defined as substances that form optical smog, ozone generation, and odor-causing substances by photochemical reactions with nitrogen oxides when they are released into the atmosphere, and regulate the emission of harmful substances including volatile organic compounds. To this end, the Republic of Korea has established regulations on air pollution preservation law to establish emission control and prevention facilities, but the technology to fundamentally remove volatile organic compounds is insufficient.

In order to solve the above problems, the Republic of Korea Patent No. 665800 (Registration Date: December 29, 2006) is a photocatalytic reaction as a whole process for the treatment of air or waste gas containing volatile organic compounds or odor emitted from the workplace The same AOP (Advanced Oxidation Process) oxidizes volatile organic compounds or odor generating substances that are highly degradable or toxic to microorganisms with OH radicals to produce small BDOC (Biologically degradable organic compounds) or lower concentrations. A hybrid system process and apparatus have been proposed that combine a photocatalytic reactor as a pre-process and a biofilter as a post-process to facilitate microbial treatment in.

In addition, the Republic of Korea Patent No. 460179 (Registration Date: December 08, 2004) uses acidic and alkaline water produced by electrolysis of electrolyzed water and a strong oxidizing agent and absorption solvent mixed therewith, which causes odor gas, VOC and harmful substances. An apparatus for removing odorous gases, VOCs and harmful gases simultaneously using electrolysis of water, which can protect workers and prevent environmental pollution by removing gas, and a method of removing the same have been proposed.

Conventional Patent Nos. 665800 and 460179 as described above have the effect of partially removing VOCs and harmful gases, but also have a problem of low removal efficiency of volatile organic compounds.

The present invention has a porosity of 80% or more in order to solve the above problems, excellent microbial adhesion ability and high specific surface area to maximize the removal efficiency of odor and volatile organic compounds, as well as built-in microorganism carrier which is a filling medium capable of backwashing And a first reaction chamber for removing water-soluble gases such as ammonia and hydrogen sulfide, and a second reaction chamber for treating egg- and water-insoluble gases such as amines and aldehydes, respectively. It is a technical problem to decompose and remove the material so that it can be converted and discharged into a stable and harmless form.

In addition, the present invention by adding a pH sensor for sensing the concentration of hydrogen ions in the circulation tank to automatically operate the pH concentration of the circulating water in order to prevent the microorganism inert phenomenon by acid or alkali gas in the inlet flue gas to enable stable operation It is technical problem to do.

In addition, the present invention prevents the pore clogging of the microbial carrier by excessive microbial growth by installing a pressure gauge in the first and second reaction chambers respectively to grasp the backwash cycle by the differential pressure between the microbial carrier layers. It is a technical problem to install a heater in a circulation water tank so that it can cope with a sudden change in temperature, such as winter, so that stable and effective operation is possible by maintaining a stable circulation water temperature.

Hereinafter, described in detail with reference to Figure 1 to Figure 4 attached to the bio-trickle filter system for treating malodor and volatile organic compounds according to the present invention.

1 is a configuration diagram of a bio-trickle filter system for treating odor and volatile organic compounds according to the present invention, and is largely stable and harmless by decomposing and removing water-soluble gas, odor components and volatile organic compounds by microorganisms attached to the media. A bio trickling filter main body 40 for converting and discharging the substance into a substance of the present invention, a circulating water supply device 50 for supplying water for growth of microorganisms attached to the media loaded in the bio trickling filter main body 40; In order to prevent microorganism inactivation caused by acidic or alkaline gas in the inlet flue gas such as volatile organic compounds in the circulating water supply device 50, the pH concentration of the circulating water is adjusted and stabilization to maintain a constant level of the circulating water. It consists of an adjusting device (60).

The bio trickling filter main body 40 is provided with first and second sprinkling pipes 10a and 10b for supplying circulating water to an upper side thereof, and a plurality of through holes 7b and 7b-1 are formed in the lower side thereof. Median, a microorganism carrier that is a filling medium capable of effective backwashing with low specific gravity compared to general microbial carriers with high microbial adhesion ability and high specific surface area on the support network (7a) (7a-1). (18) and (19) are loaded to remove the first reaction chamber 13 for removing water-soluble gases such as ammonia and hydrogen sulfide, and the second reaction chamber for removing gases of volatile organic compounds, such as amines and aldehydes, which are poorly / insoluble in water. 15 is provided.

Adhering microorganisms of the median 18 filled in the first reaction chamber 13 are Thiobacillus sp or Acidithiobacillus sp as the main species to remove water-soluble gases such as ammonia and hydrogen sulfide. To this end, the attached microorganisms of the median 19 filled in the second reaction chamber 15 are Pseudomonas sp, Methylobacillus sp and Bacillus cereus 1. This is for removing volatile organic compound gases which are poorly water-insoluble, such as amines and aldehydes.

In this way, the microorganisms inhabiting the two media (18) and (19) are different from each other to allow the treatment of gases having different components in the first reaction chamber (13) and the second reaction chamber (15).

In the upper portion of the second reaction chamber 15, a hopper-shaped upper cover 12 having a gas outlet 11 formed at the center thereof is fastened as a flange, and harmful gas is introduced into one side of the lower portion of the first reaction chamber 13. A gas inlet 16 is formed, and a lower cover 17 having a circulating water outlet 17a is fastened as a flange at a lower central portion, and an interior is formed between the first reaction chamber 13 and the second reaction chamber 15. The empty space chamber 14 is fastened as a flange, and the first to third pressure gauges 21a to 21c are provided at one side of each of the first reaction chamber 13, the space chamber 14, and the second reaction chamber 15. ) Is installed.

One side of the first and second water spray pipes 10a and 10b installed in the first and second reaction chambers 13 and 15 may include circulation water supply valves 22a and 22b and a first pipe 20. Connected to the pump 24 through, the third water pipe (9) is provided at one side of the circulation water discharge port (17a) formed in the lower center of the lower cover (17) via a backwash water inlet valve (22c), and the circulation water On the other side of the outlet 17a, the fourth and fifth pipes 8 and 8a are branched through the backwash water discharge valve 22d and the circulation valve 22e.

The circulating water supply device 50 includes a circulating water storage tank 29 through which circulating water is introduced and stored, and a heater 27 for maintaining the circulating water at a constant temperature on an inner bottom surface of the circulating water storage tank 29; , The water level sensor 26 for generating an electrical signal according to the water level level, the temperature sensor 23 for sensing the temperature of the circulating water and generating an electrical signal proportional thereto, and the pH concentration of the circulating water for sensing Hydrogen ion concentration sensor 28 for generating an electrical signal to the air and a blower 25 is provided on the outer side of the circulating water storage tank 29 to supply air to the circulating water, the pump 24 by the first It is configured to supply water and washing water for the growth of microorganisms attached to the media (18) (19) to the second reaction chamber (13), (15).

The stabilization control device 60 is a nutrient supply tank 31 for supplying nutrients when there is a lack of microbial nutrients in the inlet flue gas, such as volatile organic compounds, and by adjusting the pH concentration of the circulating water to acid or alkali gas in the inlet flue gas NaOH supply tank 32 for preventing the microbial inert phenomenon by the circulating water, and the circulating water supply tank 33 for replenishing the circulating water introduced into the circulating water storage tank 29 to maintain a constant level of water at all times. Each nutrient, NaOH, and circulating water are configured to be supplied to the circulating water storage tank 29 through the first to third solenoid valves 34a to 34c and the second pipe 30.

Here, the nutrient is a nutrient necessary for the growth of microorganisms attached to the media 18 and 19 filled in the first and second reaction chambers 13 and 15, and the nutrient is usually KH ₂ PO ₄ , K _2. HPO ₄ , MgCl ₂ , (NH 4) ₂ SO ₄ , FeSO _4, etc. are adjusted to appropriate concentrations.

Figure 2a is a perspective view of the media (18) (19) is filled in the first and second reaction chamber (13), 15 to decompose and remove the water-soluble gas, odor components and volatile organic compounds by the attached microorganisms, FIG. 2B is a cross-sectional view of FIG. 2A, in which a plurality of culture plates 3 are attached as the outer support 4 to the outer circumferential surface of the tubular body 2 firmly supported by the inner support 1 crossed in a "+" shape, A partition 5 having a disc shape in the center of the longitudinal section of the tubular body 2 is formed at the inner periphery of the culture plate 3 so that a water hole 6 is formed between the outer wall surface of the tubular body 2 and the partition 5. Formed and configured.

The culture plate (2), the tubular body (2), the inner support (1), the outer support (4) and the partition (5) are roughly processed by surface processing, etc. in order to increase the surface area and improve adhesion, the material is synthetic resin 50 ~ 95wt% and ceramic (zeolite or carbide) 5% ~ 50wt% are mixed and used as synthetic resin, polyvinyl chloride (PVC), low density polyethylene (LDPE), high density polyethylene (High Density Polyethylene) HDPE), polypropylene (PP), ethylene vinyl acetate (Ethylene Vinyl Acetate: EVA), etc. can be used in various ways.

3 is a block diagram of a control unit of the odor and volatile organic compound biotreating filter processing according to the present invention, a micro process for controlling the bio trickling filter system according to the present invention by the operation signal input from the operation unit 71 A unit (MPU) 72 is provided, and an input terminal of the MPU 72 is connected with a temperature sensor 23, a water level sensor 26, a hydrogen ion concentration sensor 28, and the MPU 72. The pump 24, the blower 25, the heater 27, and the first to third solenoid valves 34a to 34d are respectively connected to the input terminal of the pump 24 through the drive 73.

The MPU 72 stores the most optimal hydrogen ion concentration and the temperature range of the circulating water as data, and the operation unit 71 can control the power supply of the system and the pump 24 and the blower 25. Button is installed.

Figure 4 is a control flow chart of the bio-trickle filter control unit for treating odor and volatile organic compounds according to the present invention.

Referring to the process of removing the odor and volatile organic compounds in the bio-trickle filter system for treating odor and volatile organic compounds according to the present invention as described above.

First, when the circulating water supply valves 22a and 22b and the circulation valve 22e are opened to operate the power button of the operation unit 71 to supply power to the system, the MPU 72 initializes the system, The pump 24 and the blower 25 are operated. When the pump 24 is operated, the first and second water spray pipes 10a and 10b installed in the first and second reaction chambers 13 and 15 are operated. Through the supply of water to the media (18) (19) is filled in to allow the microorganism to grow.

The circulating water supplied through the first sprinkling pipe 10a is continuously supplied in a constant amount to the media 18 filled in the first reaction chamber 13 so that the microorganisms 18 are attached to the microorganisms by the circulating water. The water layer is formed on the surface of the water, while the circulating water supplied through the second water pipe (10b) is the minimum at which microorganisms attached to the media (19) filled in the second reaction chamber (15) can grow and live. It is supplied intermittently at regular intervals.

The circulating water continuously supplied through the first sprinkling pipe 10a passes through the media 18, and then through the circulating water discharge port 17a and the fifth pipe 8a formed at the lower side of the lower cover 17. The circulating water reservoir 29 is introduced again.

In this state, when a water-soluble gas such as ammonia or hydrogen sulfide, and an egg / non-insoluble gas such as amines or aldehydes, which are volatile organic compounds, enter the lower cover 17 through the gas inlet 16, ammonia, hydrogen sulfide, etc. The aqueous layer is formed on the surface of the media 18 by the circulating water supplied from the first sprinkling pipe 10a of the first reaction chamber 13 in the process of moving the water-soluble gas from the bottom of the first reaction chamber 13 to the top. After being absorbed into and removed by the microorganisms thiobacillus species or asididithiobacillus species that grows in the media (18) to grow in the media (18) is more than 98% of the odor and water-soluble gas is removed.

The non-aqueous gas, such as amines, aldehydes, and the like, which are not removed in the process of passing through the first reaction chamber 13, flows up into the space chamber 14, and then supports the support network 7a-1. Through the through hole (7b-1) of the second reaction chamber 15 is introduced into the interior via the media (19).

At this time, more than 98% of the volatile organic compounds are removed by the microorganisms, which are mainly Pseudomonas species, methylovacillus species and Bacillus cereus 1 grown in the median (19).

In other words, the egg / water-insoluble odor and volatile organic compounds are mainly removed in the second reaction chamber 15, because in the second reaction chamber 15, unlike the first reaction chamber 13, water is sprayed in the upper part of the chamber. By reducing the amount of circulating water to reduce the material transfer resistance in the water column to increase the treatment efficiency by the microorganisms.

Next, a process for stably operating the biotrickle filter system for treating malodor and volatile organic compounds according to the present invention will be described with reference to FIGS. 3 and 4.

First, when power is supplied to the system by operating the power button of the forward manipulation unit 71, the MPU 72 initializes the system and reads information from each sensor.

That is, the hydrogen ion concentration sensor 28 installed in the circulating water storage tank 29 senses the hydrogen ion concentration of the circulating water and transmits an electrical signal proportional thereto to the MPU 72. By analyzing the signal transmitted from the ion concentration sensor 28, if the hydrogen ion concentration value is lower than the reference setting range, the second solenoid valve 34b is controlled to supply a predetermined amount of NaOH stored in the NaOH supply tank 32. This process is repeated until the hydrogen ion concentration of the circulating water reaches the standard value range.

The reason for maintaining the hydrogen ion concentration as a reference value by supplying NaOH to the circulating water as described above is to prevent microbial inactivation caused by acidic or alkaline gas in the inlet flue gas, thereby enabling stable operation.

In addition, by artificially detecting the concentration of nitrogen (or phosphorus) present in the circulating water in the circulating water storage tank 29, when the nutrient concentration value is less than a predetermined reference setting range, the operation unit 71 is operated to operate the first solenoid valve. By controlling 34a, a certain amount of NaOH stored in the NaOH supply tank 32 is supplied, and this process is repeated until the nutrient concentration of the circulating water reaches a reference value range.

The reason for maintaining the nutrient concentration in the circulating water as described above is that when treating odors and volatile organic compounds, when the concentration of nutrients necessary for the growth of microorganisms in the inlet gas is insufficient, the treatment efficiency is lowered periodically After measuring the treatment efficiency and the concentration of nutrients in the circulating water, the nutrients can be manually injected into the circulating water by the appropriate amount based on these results to enable stable and effective operation.

In addition, by maintaining the temperature of the circulating water 20 ~ 40 ℃ by the heater 27 and the temperature sensor 23 installed in the circulating water storage tank 29 to cope with a sudden change in temperature, such as winter.

That is, the temperature sensor 23 installed in the circulating water storage tank 29 generates an electrical signal proportional to the temperature of the circulating water and transmits it to the MPU 72. The MPU 72 has a temperature sensor ( By controlling the heating degree of the heater 27 by the temperature information of the circulating water output from the 23) to maintain the temperature of the circulating water within the set range, the temperature setting of the circulating water can be adjusted according to the season It will be able to cope with sudden changes in temperature such as winter season, thus enabling stable operation.

In addition, the water level detection sensor 26 installed in the circulation water storage tank 29 allows the circulation water flowing into the circulation water storage tank 29 to be maintained at a constant water level at all times.

That is, when the water level sensor 26 reaches the highest water level level introduced into the circulation water storage tank 29, the water level sensor 26 is energized to generate an electrical signal and transmit it to the MPU 72. By controlling the third solenoid valve 34c according to the water level information of the circulating water output from the circulating water, the circulating water is constantly supplied by automatically supplying and replenishing the circulating water stored in the circulating water supply tank 33 to the circulating water storage tank 29. By securing the water level, stable operation is possible.

Next, the back taxation section in the biotrickle filter body 40 will be described.

When microorganisms excessively proliferate in the media 18 and 19 loaded in the first and second reaction chambers 13 and 15, a pore blockage occurs, thereby increasing the pressure load and decreasing gas removal efficiency. As a result, washing should be performed at regular intervals, and this washing cycle can be confirmed by the differential pressure of the first reaction chamber 13, the space chamber 14, and the second reaction chamber 15.

That is, the first to third pressure gauges 21a to 21c installed at one side of the first reaction chamber 13, the space chamber 14, and the second reaction chamber 15 may measure values measured in proportion to the pressure in each chamber. The microorganisms that are excessively attached to the media (18) (19) continue to grow by ingesting organic matter and nutrients in the gas during the operation process, and when the operation time has elapsed for a certain time, the media (18) (19) The flow rate of the gas and the circulating water is disturbed by the microbial film attached to the shell, thereby increasing the pressure of each chamber and determining the backwashing time by the differential pressure of the first to third pressure gauges 21a to 21c.

At this time, the manager closes the circulating water supply valves 22a and 22b, the backwash water discharge valve 22d, and the circulation valve 22e when backwashing is necessary according to the differential pressure of the first to third pressure gauges 21a to 21c. At the same time, after opening the backwash water inlet valve 22c and operating the pump 24 at a high discharge pressure, the circulating water introduced into the circulating water storage tank 29 is formed through the third pipe 9. The media (18) and (19) of the reaction chamber (13) and (15) are caused to collide with each other while being agitated, and the collision causes detachment of excess microorganisms attached to the media (18) and (19).

Therefore, the microorganisms detached from the media (18) (19) during the repeated backwashing process is precipitated by the lower cover (17), the precipitate is the fourth pipe (8) and the discharge valve (22d) with the backwashing water. By being discharged to the outside through the media (18) (19) to prevent the clogging of the pore due to excessive microbial growth will be able to operate stable and effective.

As described above, the present invention has a porosity of 80% or more, and has excellent microbial adhesion ability and high specific surface area, maximizing the removal efficiency of odors and volatile organic compounds, as well as embedding a microorganism carrier which is a backwashing-filling medium. And a first reaction chamber for removing water-soluble gas such as hydrogen sulfide, and a second reaction chamber for treating egg / insoluble water such as amines and aldehydes, respectively, to decompose and remove odor components and volatile organic compounds by microorganisms. By converting and discharging the material into a stable and harmless form, it protects workers in the workplace and prevents environmental pollution.

In addition, the present invention by adding a pH sensor for sensing the hydrogen ion concentration of the circulation tank in the circulation tank for supplying water to the growing microorganisms attached to the media flowing into the first and second reaction chamber, the acid in the inlet flue gas Or in order to prevent the microorganism inert phenomenon by alkali gas, the pH concentration of the circulating water is automatically adjusted, and when there is a lack of microbial nutrients in the inlet flue gas such as volatile organic compounds, it is possible to operate stably by supplying nutrients.

In addition, the present invention prevents the pore clogging of the microbial carrier by excessive microbial growth by installing a pressure gauge in the first and second reaction chambers respectively to grasp the backwash cycle by the differential pressure between the microbial carrier layers. By installing a heater in the circulation water tank, it is possible to cope with a sudden change in temperature such as winter season, thereby maintaining a stable temperature of the circulation water, thereby having a stable and effective operation.

Claims (4)

The first sprinkling pipe (10a) for supplying the circulating water is provided in the inner central portion and the medial (18), which is a microbial carrier, is filled on the support net (7a) formed with a plurality of through holes (7b) in the inner lower side to remove the water-soluble gas. The reaction chamber 13, The second sprinkling pipe 10b for supplying the circulating water is installed inside the upper side, and the media 19 as the microbial carrier is filled on the support net 7a-1 having the plurality of through holes 7b-1 formed therein. A second reaction chamber 15 for removing the water-soluble gas, A space chamber 14 positioned between the first reaction chamber 13 and the second reaction chamber 15 and fastened as a flange to each other and having an empty inside; A hopper-shaped upper cover 12 which is fastened and installed as a flange on an upper side of the second reaction chamber 15 and in which a gas outlet 11 is formed at the center thereof; The first inlet chamber 13 is fastened and installed as a flange, the gas inlet 16 is formed on one side of the harmful gas flow in the lower central portion is formed of a lower cover 17 formed with a circulating water outlet (17a) A trickling filter body 40; A circulation water supply device (50) for supplying circulating water to the media (18) (19) through the first and second water pipes (10a, 10b) to dissolve the growth of microorganisms and water-soluble gas; A stabilization controller 60 is provided to control the pH concentration of the circulating water introduced into the circulating water supply device 50 and to supply NaOH and supplemental water to maintain a constant water level. The circulating water introduced into the circulating water supply device 50 is a pump 24 through the first pipe 20 and the circulating water supply valves 22a and 22b to form the first and second sprinkling pipes 10a ( 10b), A third pipe 9 is installed between the circulating water outlet 17a and the pump 24 through a backwash water inlet valve 22c. A fifth pipe 8a is installed between the circulation water outlet 17a and the circulation water supply device 50 through the circulation valve 22e. One side of the fifth pipe (8a), the fourth pipe (8) is branched through a backwash water discharge valve (22d) is characterized in that the bio-trickle filter system for treating odor and volatile organic compounds. According to claim 1, The circulating water supply device 50, A circulation water storage tank 29 in which circulation water for dispersing microorganisms and dissolving water-soluble gases is stored in the first and second reaction chambers 13 and 15; A heater 27 installed on an inner bottom surface of the circulation water storage tank 29 and maintaining the circulation water at a constant temperature; A water level sensor 26 installed at one side of the circulation water storage tank 29 and energized at the highest water level to generate an electrical signal; A temperature sensor 23 installed at the other side of the circulation water storage tank 29 and sensing an temperature of the circulation water to generate an electrical signal proportional thereto; A hydrogen ion concentration sensor 28 installed at the other side of the circulation water storage tank 29 to sense pH concentration of the circulation water and generate an electrical signal proportional thereto; Biotickling filter system for treating odor and volatile organic compounds, characterized in that it comprises a blower (25) installed on the outer side of the circulating water storage tank (29) to supply air to the circulating water. According to claim 1 or 2, wherein the stabilization control device 60, A nutrient supply tank 31 for supplying nutrients when the microbial nutrients in the inlet flue gas are insufficient in the circulating water introduced into the circulating water storage tank 29; NaOH supply tank 32 for adjusting the pH concentration by supplying NaOH to the circulating water introduced into the circulating water storage tank 29, A circulating water supply tank 33 for replenishing the circulating water introduced into the circulating water storage tank 29 to maintain a constant level of water at all times; First to third solenoid valves for supplying to the circulating water storage tank 29 through the second pipe 30 on one side of the nutrient supply tank 31, NaOH supply tank 32, circulating water supply tank 33 Biotickling filter system for treating odor and volatile organic compounds, characterized in that (34a ~ 34c) is provided. According to claim 3, wherein the first to third pressure gauges (21a to 21c) are provided on one side of the first reaction chamber 13, the space chamber 14, the second reaction chamber 15, the back washing time by the differential pressure Biotrickling filter system for the treatment of odor and volatile organic compounds, characterized in that the recognition.

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