KR101847352B1 - System and method for removing landfill ammonia nitrogen using bubble cap - Google Patents

Abstract

The present invention relates to a system and a method for removing ammonia nitrogen in a landfill using a bubble-cap. The system comprises: a degassing tower which provides a space for degassing of leachate therein, where a pH detecting unit is installed to measure pH of the leachate, where an air supply port is formed to supply air inwardly, where an injection nozzle is installed in the upper part of the air supply port in order to inject the leachate downwardly, where a bubble-cap is installed in the upper part of the injection nozzle, and where an exhaust port is installed in the upper part of the bubble-cap; a drug supply unit which supplies an alkaline reaction drug in the inside of the degassing tower; a blowing unit which blows air to the air supply port; a storage tank which stores the leachate circulated and supplied to the degassing tower for degassing; a supply unit which supplies the leachate to the injection nozzle and the bubble-cap from the storage tank; a discharge unit which discharges the leachate, that has undergone degassing from the degassing tower, to the storage tank; a steam supply unit which supplies steam to the inside of the degassing tower; a drug control unit which controls the supply amount of the reaction drug of the drug supply unit so that the pH measured by the pH detecting unit can be within the range of pH11 to pH14; and a blowing control unit which controls the blowing unit so that the amount of air blowing to the degassing tower can be 1.500-2,500 times greater than the supply amount or the discharge amount of the leachate to or from the degassing tower by volume. Therefore, the system and the method for removing ammonia nitrogen in a landfill by using a bubble-cap can maximize efficiency in a degassing process inside a degassing tower, by converting ammonia ions, existing in a leachate at a high concentration, into ammonia in a previous process by using a reaction drug where an alkaline agent and a catalyst are added, a bubble-cap, an injection nozzle, etc.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and system for removing ammonia nitrogen from a landfill using a bubble cap,

The present invention relates to a system and method for removing ammonia from a landfill using a bubble cap, and more particularly, to a method and system for removing ammonia from a leachate containing ammonia The present invention relates to a system and method for removing ammonia from a landfill site using a bubble cap that maximizes efficiency in the process of degassing in a desulfurization tower.

Generally, leachate pollutes odor and nearby lakes and rivers. Therefore, it is necessary to secure a leachate treatment facility with adequate purification facilities near landfill facilities. In particular, since leachate is generated continuously for at least 20 years after landfilling, such a leachate treatment facility should be designed to enable effective leachate treatment from the time of initial facility design.

As a technique related to conventional landfill leachate treatment, Korean Patent Registration No. 10-0934350 discloses a "movable leachate treatment apparatus ", which is a leachate treatment apparatus for recycling leachate for early stabilization of landfill, A biological reaction tank for subjecting the inflowed leachate to a nitrification process to partially nitrify ammonia nitrogen (NH4 + -N) of the leachate with nitrite nitrogen (NO2 - N) to transfer the biologically treated water having undergone a nitrification process to a recycle tank; A recycle tank for storing the biological treatment water introduced from the biological reaction tank for a predetermined period of time and transferring the biological treatment water to the landfill or chemical reaction tank corresponding to a predetermined property of the biological treatment water; A chemical reaction tank which is transferred to the landfill or discharged to the outside in accordance with a predetermined property of the chemical treatment water treated through the Fenton oxidation process for removing the refractory organic material in the biological treatment water passed through the biological reaction tank; A recirculation tank control unit for determining a predetermined property of the biological treatment water in the recycling tank and controlling the transfer of the biological treatment water to the landfill or the chemical reaction tank; And a chemical reaction tank control unit for determining the predetermined property of the chemical treatment water in the chemical reaction tank and controlling the transfer of the chemically treated water to the landfill or the outside so as to output a warning message in an emergency situation A controller unit; A biological reaction tank, the recycling tank, the chemical reaction tank, and the controller unit; .

However, this prior art has a problem that biological treatment of high concentration ammonia nitrogen of landfill leachate can not sufficiently complement the biological treatment.

In order to solve the problems of the prior art described above, the present invention relates to a process for converting ammonia ions, which are present at a high concentration in leachate, into ammonia by using a reaction agent to which an alkali agent and a catalyst agent are added in a previous step, The purpose of this study is to maximize efficiency by changing various conditions such as air injection amount, temperature, contact time, contact speed, and pH.

According to an aspect of the present invention, there is provided a pH sensor for measuring the pH of the leachate, wherein the pH sensor is provided inside the leachate, A bubble cap is provided on the upper side of the injection nozzle on the inner side and an exhaust port is formed on the upper side of the bubble cap. Degassing tower; A medicament supply unit for supplying an alkaline reaction medicament to the inside of the deaeration tower; A blowing unit for blowing air to the air supply mechanism; A storage tank in which leachate circulating and supplied for degassing is stored in the deaeration tower; A supply unit for supplying leachate from the storage tank to the injection nozzle and the bubble cap; A discharge unit for discharging the deaerated water from the deaeration tower to the storage tank; A steam supply unit for supplying steam to the deaeration tower; A medicament control unit for controlling a supply amount of the reaction medicament in the medicament supply unit such that the pH measured by the pH sensing unit has a pH of 11 to 14; A blowing control unit for controlling the blowing unit such that the amount of air blown to the deaeration tower is 1,500 to 2,500 times the amount of the leachate supplied to the degassing tower or the discharge amount based on the volume; And a temperature control unit for receiving the detection signal of the first temperature sensing unit installed to measure the temperature of the leachate in the deaeration tower and controlling the steam supply unit to maintain the temperature of the leachate in the deaeration tower at 50 to 80 ° C. for 3 to 6 hours A control unit; A landfill ammonia nitrogen removal system using a bubble cap is provided.

Wherein the bubble cap is arranged to form a plurality of upper and lower layers by arranging the bubble cap on a part or the whole of the tray, A plurality of vertical barrier ribs may be provided so as to move in a zigzag manner downward.

In the storage tank, a diffuser for injecting the air supplied from the outside and mixing with the leachate may be installed in the inner lower part.

The medicament control unit may control the supply amount of the reaction medicament in the medicament supply unit such that the pH measured by the pH sensing unit has a pH in the range of 11.3 to 11.5.

Wherein the feed-in portion and the feed portion are arranged such that the contact time between the leachate and the air is 10 to 20 times as much as the capacity of the storage tank on the basis of 36 hours per batch of contact time between leachate and air in the deaerator, The air blowing amount of the air to be contacted and the supply amount of the leachate may be satisfied, and the air may pass through the deaeration tower at a speed of 0.1 to 1 m / s.

According to another aspect of the present invention, there is provided a method for removing ammonia nitrogen using a landfill ammonia nitrogen removal system using a bubble cap according to an aspect of the present invention, the method comprising: And an alkaline reaction agent is supplied to the inside of the deaeration tower by the medicament supply unit through the bubble cap, and air is blown and supplied to the inside of the deaeration tower by the air supply unit Supplying steam to the inside of the deaeration tower by the steam supply unit; Controlling the supply amount of the reaction medicament in the medicament supply unit by the medicament control unit such that the pH of the leachate in the deasophage measured by the pH sensing unit is in the range of pH 11-14; And controlling the blowing unit by the blowing unit so that the amount of air blown to the deaeration tower is 1,500 to 2,500 times the amount or amount of the leachate supplied to the degassing tower based on the volume. A method for removing ammonia nitrogen is provided.

And controlling the steam supply unit so that the temperature of the leachate in the degassing tower measured by the first temperature sensing unit is maintained at 50 to 80 DEG C for 3 to 6 hours after the step of controlling the blower unit have.

In the step of supplying the leachate, the reaction medicament, the air and the steam to the deaeration tower, the deaeration tower has a plurality of trays arranged in upper and lower layers in the deaeration tower, and the bubble cap is installed in part or all of the tray, A plurality of vertically arranged bulkheads may be installed so that the leachate overflows and moves downwardly in a zigzag manner on one side of the tray.

In the step of supplying the leachate, the reaction medicament, the air and the steam to the deaeration tower, the storage tank may be provided with a diffuser for injecting the air supplied from the outside and mixing it with the leachate.

The step of controlling the supply amount of the reaction agent may control the supply amount of the reaction agent of the agent supply unit such that the pH measured by the pH control unit of the agent control unit has a pH of 11 to 11.5.

In the step of supplying the leachate, the reaction agent, the air and the steam to the deaeration tower, the blowing section and the supplying section may be arranged such that the contact time between the leachate and the air in the deaerator tower is set to 36 hours per batch, And the amount of contact between the air and the air is in a range of 10 to 20 times the capacity of the storage tank and the supply amount of the leachate is 0.1 to 1 m / s Speed.

According to the system and method for removing ammonia nitrogen from the landfill site using the bubble cap according to the present invention, it is possible to remove ammonia ion present in the leachate at a high concentration by using a reaction agent, a bubble cap, To ammonia, it is possible to maximize the efficiency by varying various conditions such as air injection amount, temperature, contact time, contact speed, and pH during degassing in the degassing tower.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram illustrating a landfill ammonia nitrogen removal system using a bubble cap according to an embodiment of the present invention. FIG.
FIG. 2 is a partial cross-sectional view showing a main part of a landfill ammonia nitrogen removal system using a bubble cap according to an embodiment of the present invention.
3 is a flowchart illustrating a method for removing ammonia nitrogen from a landfill using a bubble cap according to another embodiment of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. It should be understood that the present invention is not limited to these specific embodiments but includes all changes, equivalents, and alternatives included in the technical idea of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or corresponding elements, and redundant description thereof will be omitted .

FIG. 1 is a schematic view illustrating a landfill ammonia nitrogen removal system using a bubble cap according to an embodiment of the present invention. FIG. 2 is a schematic view of a landfill ammonia nitrogen removal system using a bubble cap according to an embodiment of the present invention. Fig.

1 and 2, the landfill ammonia nitrogen removal system 100 using a bubble cap according to an embodiment of the present invention includes a degassing tower 110, a chemical feeder 120, a blower 130, A tank 140, a supply unit 150, a discharge unit 160, a medicine control unit 170, and a blowing control unit 180.

The degassing tower 110 is provided with a place for allowing the leachate to be deaerated on the inner side, a pH sensing unit 111 for measuring the pH of the leachate, and a feed mechanism 112 for supplying air to the inside is formed A bubble cap 114 is provided on the upper side of the injection nozzle 113 on the inner side and a bubble cap 114 is provided on the bubble cap 114 on the inner side of the bubble cap 114. In addition, And the exhaust port 115 is formed on the upper side of the exhaust port 115.

The degassing tower 110 includes an extraction inlet 117a for introducing leachate into the bubble cap 114 side, a steam inlet 117b for introducing steam from the steam supplier 190, A discharge port 117c for discharging the reagent to the reaction chamber 140 and a drug inlet 117d for introducing the reaction reagent may be respectively provided and a window 118 made of a transparent material may be provided for internal observation. Here, the window 118 may be provided on the deaerator 110 in a plurality of up and down directions, and may have a structure capable of being opened and closed to open the inside.

The deaerator 110 has a tray 114a arranged in an upper and lower multilayered structure and a bubble cap 114 is installed on a part or all of the tray 114a so that the bubble cap 114 forms a plurality of upper and lower layers And a plurality of vertical partition walls 114b may be installed so that the leachate overflows at one side of the tray 114a and moves zigzag downward. A plurality of bubble caps 114 may be provided for each tray 114a. The bubble cap 114 allows the leachate introduced from the upper portion to contact the steam supplied from the steam supply unit 190 while passing through the multi-stage tray 114a to remove gas components such as ammonia from the leachate. The steam or the like is discharged from the tray 114a through the exhaust port 115 at the upper end of the deaeration tower 110 and the vertical partition wall 114b overflows. In this process, the leachate is brought into contact with steam over a large surface area to remove harmful gases such as nitrogen, including ammonia, contained therein.

The medicament supply unit 120 supplies an alkaline medicament to the inside of the degassing tower 110. Here, the alkaline reaction agent is an alkaline agent added with a catalyst for deaeration, and the purity can always have a constant condition. Such a reaction agent may be a known product for degassing. The medicament supply unit 120 may supply the reaction medicament by pumping the medicament supply pump 122 through the medicament supply line 121 connected to the medicament inlet 117d of the degassing tower 110. [

The blowing unit 130 blows air to supply the air to the air supply unit 112. The blowing unit 130 blows air to the air supply unit 132 through the blowing line 131 connected to the air supply unit 112 side of the deaeration tower 110 Thereby blowing air.

The storage tank 140 stores the leachate circulated and supplied to the degassing tower 110 for degassing. The storage tank 140 is provided with a diffuser 141 for spraying upwardly the air supplied from the outside and mixing it with the leachate. The diffuser 141 may include an air injection nozzle provided along a longitudinal direction on an air supply line extending from the outside to the bottom of the storage tank 140. The storage tank 140 may be provided with a second temperature sensing unit 142 for sensing temperature and a water level sensing unit 143 for sensing water level.

The supply unit 150 supplies the leachate from the storage tank 140 to the injection nozzle 113 and the bubble cap 114. The supply unit 150 includes a leachate supply line 151 for providing a path for supplying leachate from the storage tank 140 to the valve cap 114 via the injection nozzle 113 and the bleed water inlet 117a, And a leachate feed pump 152 installed in the line 151 to provide a pumping force for supplying the leachate. Further, the leachate supply pump 152 may be installed in parallel to the leachate supply line 151 as a plurality.

When the contact time between leachate and air in the degassing tower 110 is set to 36 hours as a reference per batch, the number of times the leachate and the air are in contact with each other is controlled by the storage tank 140, And the air can be passed through the degassing tower 110 at a rate of 0.1 to 1 m / s. Therefore, when the contact time is at least the reference time, the number of contact between the leachate and the air in the degassing tower 110 is less than 10 times the capacity per storage tank 140 The amount of air blown by the blowing unit 130 and the amount of leachate supplied by the supply unit 150 may be set in advance or may be set to a predetermined value in order to satisfy both the blowing unit 130 and the supply unit 150, Or the like. Here, the amount of air blowing by the blowing unit 130 and the amount of the leachate supplied by the supplying unit 150 to satisfy such conditions may be calculated manually by a fluid mechanics or may be automatically calculated by a program for calculating the amount Of course. Also, the air flow rate in the deaeration tower 110 may be such that the air flow control unit 180 satisfies a predetermined range through the wind power control of the blowing unit 130 through the detection value of the flow rate sensing unit.

The discharge unit 160 discharges the deaerated water from the deaeration tower 110 to the storage tank 140, and may be configured as a discharge line, for example.

The steam supply unit 190 may supply the steam generated from the boiler or other steam generator to the deaeration tower 110 through the steam supply line.

The drug control unit 170 controls the amount of the drug supply supplied from the drug supply unit 120 so that the pH measured by the pH sensing unit 111 is in the range of pH 11-14. The medicine control unit 170 can control the number of revolutions of the pump motor 123 of the bad agent supply pump 122 in the medicine supply unit 120 to control the supply amount of the reaction medicine by the medicine supply unit 120. [ The medicament control unit 170 can control the amount of the reaction medicament supplied from the medicament supply unit 120 so that the pH measured by the pH sensing unit 111 has a range of pH 11,3 to 11.5.

The blowing control unit 180 can control the blowing unit 130 such that the amount of air blown into the degassing tower 110 is 1,500 to 2,500 times the amount of the leachate supplied to the degassing tower 110 or the discharge amount thereof based on the volume. The volume of the air supplied to the degassing tower 110 per hour is supplied to the degassing tower 110 or the volume of the leachate per unit time discharged from the tower tower 110 is 1,500 to 2,500 times the volume of the ventilation motor 133 The amount of blowing of air by the blowing unit 130 can be controlled through the blowing amount of the air output from the flow rate detecting unit 134 provided in the blowing line 131, And can be controlled to stay in the range.

The landfill ammonia nitrogen removal system 100 using the bubble cap according to an embodiment of the present invention may further include a temperature controller 210.

The temperature control unit 210 receives the sensing signal of the first temperature sensing unit 116 installed to measure the temperature of the leachate in the desulfurization tower 110 and adjusts the temperature of the leachate in the degassing tower 110 from 50 to 80 ° C to 3 The control of the steam supply unit 190 may be performed by controlling the steam supply amount control valve provided in the steam supply unit 190. [ In addition, the temperature controller 210 may be provided with a timer for counting the time.

3 is a flowchart illustrating a method for removing ammonia nitrogen from a landfill using a bubble cap according to another embodiment of the present invention.

Referring to FIG. 3, the method for removing ammonia nitrogen from landfill using a bubble cap according to another embodiment of the present invention includes the steps of supplying leachate, a reaction agent, air and steam to a degassing tower (S11) (S12) of controlling the supply amount of the reaction agent, and a step (S13) of controlling the amount of air to be supplied to the degassing tower. However, in the case of using the bubble cap according to one embodiment of the present invention, The same structure as that of the landfill ammonia nitrogen removal system 100 using the bubble cap will not be described.

The step S11 of supplying the leachate, the reaction medicament, the air and the steam to the degassing tower is carried out by injecting the leachate stored in the storage tank 140 into the degassing tower 110 through the injection nozzle 113 and the bubble cap 114 An alkaline reaction agent is supplied to the inside of the degassing tower 110 by the medicament supply unit 120 and the air is blown and supplied to the inside of the degassing tower 110 by the air supply unit 130, Steam is supplied to the inside of the degassing tower 110 by the steam generator 190.

In the step S11 of supplying the leachate, the reaction medicament, the air and the steam to the degassing tower, the degassing tower 110 may have a plurality of trays 114a arranged in the upper and lower layers and a part or all of the trays 114a The bubble cap 114 can be arranged to form a plurality of upper and lower layers by the bubble cap 114 being installed on the tray 114a and the vertical partition wall 114b can be arranged so that the leachate overflows on one side of the tray 114a and moves zigzag downward. ) Can be installed in a plurality. The storage tank 140 may be provided with a diffuser 141 for spraying upwardly the air supplied from the outside to mix with the leachate. The feed-in part 130 and the feed part 150 are arranged such that the contact time between the leachate and the air in the degassing tower 110 is 36 hours per batch, It is possible to satisfy the air blowing amount and the leachate feeding amount for contacting 10 to 20 times the capacity.

According to the step S12 of controlling the supply amount of the reaction agent supplied to the degassing tower, the pH of the leachate in the degassing tower 110 measured by the pH sensing unit 111 is adjusted to the pH of 11 to 14 170 can control the supply amount of the reaction medicine in the medicine supply part 120. [ More specifically, the step S12 of controlling the supply amount of the reaction medicament is performed such that the medicament control unit 170 controls the pH of the medicament supply unit 120 such that the pH measured by the pH sensing unit 111 is in the range of pH 11, The amount of the reaction agent supplied can be controlled. Reaction chemicals are alkaline chemicals with added catalysts. Their purity is always constant. At least 11pH should be maintained at the beginning of degassing, and the concentration of ammonia nitrogen in leachate is more than 2,500mg / ℓ. Degassing is very effective. The dose of the reaction drug can be adjusted by the proportional control method within the set range of the lower limit value and the upper limit value of pH since the reaction agent is continuously injected simultaneously with the transfer of the leachate.

The amount of air blown to the degassing tower 110 is controlled to be 1,500 to 2,500 times the amount of the leachate supplied to the degassing tower 110 or the amount of the discharged water to the degassing tower 110 based on the volume, (130) can be controlled by the controller (130). The amount of air injected refers to the amount of air to be in contact with the amount of leachate sprayed into the degassing tower 110, and the amount of air requires an air amount of 1,500 to 2,500 times the amount of discharged leachate. The contact time is determined based on 36 hours per batch, and the discharge amount of the leachate supply pump 152 should be determined so that the number of contact times can be more than 10 times the capacity of the storage tank 140. The air amount is determined when the discharge amount is determined, and the air should be designed so that the passing speed of the deaeration tower is 1 m / sec or less in determining the surface area of the deaeration tower (110). The leachate is drawn in from the upper part, and the air passes through the bubble cap 114 and the stages 1 and 2 to be in contact with the leachate, and part of the leachate is injected downward by the injection nozzle 113 to increase the specific surface area to be contacted, To be deaerated in contact with air. The contact time and pH value should be determined according to the predicted concentration of ammonia nitrogen and the concentration to be removed. If the pH value is set to 10.5 or less, it should be supplemented by a timer after a certain time. At this time, even if the operation is performed around pH 11, there is no large change in the removal efficiency, so the operation should be economical.

After the step S13 of controlling the blower unit, the steam supply unit 190 is operated to maintain the temperature of the leachate in the degassing tower 110 measured by the first temperature sensing unit 116 from 50 to 80 DEG C for 3 to 6 hours (Step S14). In the case of landfill, it is possible to supply waste heat using methane gas. Therefore, if ammonia can be easily removed by raising the temperature, if it can be maintained at 50 ° C or more for 3 hours or more, not only the total degassing time can be shortened, Since the air amount according to the change can be varied by proportional control, it is economical and can produce more deaeration water. Since there is a difference in response time depending on the change in the amount of air, it is necessary to find the most economical driving index in consideration of the concentration to be obtained.

According to the ammonia nitrogen removal system and method using the bubble cap according to the present invention, it is possible to remove ammonia nitrogen from the leachate at a high concentration in the leachate using a reaction agent, a bubble cap, a spray nozzle, In the process of converting ammonia into ammonia, various conditions such as air injection amount, temperature, contact time, contact speed, and pH can be changed in the process of degassing in the degassing tower, thereby maximizing the efficiency.

Although the present invention has been described with reference to the accompanying drawings, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiment, but should be determined by the claims and equivalents thereof.

110: degassing tower 111: pH sensing unit
112: feed mechanism 113: injection nozzle
114: bubble cap 114a: tray
114b vertical barrier 115 air outlet
116: first temperature sensing unit 117a: take-out water inlet
117b: Steam inlet 117c: Outlet
117d: Drug input port 118: Window
120: drug supply part 121: drug supply line
122: chemical feed pump 123: pump motor
130: blowing fan 131: blowing line
132: blower 133: blowing motor
134: flow rate sensing unit 140: storage tank
141: Diffuser 142: Second temperature sensing unit
143: water level sensing unit 150:
151: Leachate supply line 152: Leachate supply pump
160: discharge unit 170: drug control unit
180: air blowing control unit 190: steam supply unit
210:

Claims (10)

A pH sensing unit 111 for measuring the pH of the leachate is provided, a supply mechanism 112 for supplying air to the inside is formed, A bubble cap 114 is provided on the upper side of the injection nozzle 113 on the inner side and an upper side of the bubble cap 114 is provided on the upper side of the bubble cap 114 A degassing tower 110 having an exhaust port 115 formed therein;
A drug supply unit 120 for supplying an alkaline reaction medication to the inside of the deaeration tower 110;
A blowing unit 130 for blowing air to the air supply mechanism 112;
A storage tank 140 in which the leachate circulating and supplied for degassing is stored in the deaeration tower 110;
A supply unit 150 for supplying leachate from the storage tank 140 to the injection nozzle 113 and the bubble cap 114;
A discharge unit 160 for discharging the deaerated water from the deaeration tower 110 to the storage tank 140;
A steam supply unit 190 for supplying steam into the deaeration tower 110;
A drug control unit 170 for controlling a supply amount of the drug to be supplied to the drug supply unit 120 so that the pH measured by the pH sensing unit 111 is in a range of pH 11 to pH 14;
A blowing control unit 180 for controlling the blowing unit 130 such that the amount of air blown to the deaeration tower 110 is 1,500 times to 2,500 times the amount or amount of the leachate supplied to the deaeration tower 110 based on the volume thereof; And
The temperature of the leachate in the degassing tower 110 is adjusted to 50 to 80 ° C. for 3 to 6 hours by receiving the detection signal of the first temperature sensing unit 116 installed to measure the temperature of the leachate in the degassing tower 110. And a temperature control unit (210) for controlling the steam supply unit (190)
The degassing tower (110)
A tray 114a is arranged on the inner side of the tray 114a and the bubble cap 114 is installed on part or all of the tray 114a so that the bubble cap 114 is arranged to form a plurality of upper and lower layers, A plurality of vertical partition walls 114b are installed on one side of the tray 114a so that the leachate overflows and moves downward zigzag,
The medicine control unit 170,
Controls the supply amount of the reaction medicines of the medicament supply unit 120 such that the pH measured by the pH sensing unit 111 has a range of pH 11.3 to pH 11.5,
The feed-in unit 130 and the feed unit 150 are connected to each other,
The contact time of the leachate with the air is 10 times to 20 times the capacity of the storage tank 140 on the basis of 36 hours of contact time between the leachate and the air in the degassing tower 110, And the air is passed through the desulfurization tower 110 at a rate of 0.1 m / s to 1 m / s, so that the amount of the air to be blown and the amount of the leachate to be supplied to the desalination tower 110 Removal system. delete The method according to claim 1,
The storage tank (140)
And a diffuser (141) for spraying upwardly the air supplied from the outside and mixing with the leachate is installed in the lower part of the inner side. delete delete A method for removing ammonia nitrogen using a landfill ammonia nitrogen removal system using the bubble cap according to claim 1 or claim 3,
The leachate stored in the storage tank 140 is supplied to the inside of the degassing tower 110 through the injection nozzle 113 and the bubble cap 114, An alkaline reaction agent is supplied to the inside of the degassing tower 110 and the air is blown into and supplied to the inside of the degassing tower 110 by the blowing unit 130. The steam is supplied to the degassing tower 110 Supplying steam to the inside of the steam generator;
The control unit 170 controls the supply amount of the reaction medicines of the medicament supply unit 120 so that the pH of the leachate in the deodorization tower 110 measured by the pH sensing unit 111 is in the range of pH 11 to pH 14 ;
The amount of air blown into the deaeration tower 110 may be 1,500 times to 2,500 times the amount or amount of the leachate supplied to the deaerator 110 based on the volume of the deaeration tower 110, ; And
After the step of controlling the blowing unit, the temperature of the leachate in the degassing tower 110 measured by the first temperature sensing unit 116 is maintained at 50 ° C. to 80 ° C. for 3 hours to 6 hours, 190, < / RTI >
In the step of supplying leachate, reaction agent, air and steam to the deaeration tower,
The degassing tower (110)
A tray 114a is arranged on the inner side of the tray 114a and the bubble cap 114 is installed on part or all of the tray 114a so that the bubble cap 114 is arranged to form a plurality of upper and lower layers, A plurality of vertical partition walls 114b are installed on one side of the tray 114a so that the leachate overflows and moves downward zigzag,
Wherein the step of controlling the supply amount of the reaction agent comprises:
The drug control unit 170 controls the supply amount of the drug to be supplied to the drug supply unit 120 so that the pH measured by the pH sensing unit 111 has a pH range of 11.3 to 11.5,
In the step of supplying leachate, reaction agent, air and steam to the deaeration tower,
The feed-in unit 130 and the feed unit 150 are connected to each other,
The contact time of the leachate with the air is 10 times to 20 times as much as the capacity of the storage tank 140 on the basis of 36 hours of contact time between leachate and air in the degassing tower 110, And the air is passed through the desulfurization tower 110 at a rate of 0.1 m / s to 1 m / s, so that the amount of the air to be blown and the amount of the leachate to be supplied to the desalination tower 110 Removal method. delete The method of claim 6,
In the step of supplying leachate, reaction agent, air and steam to the deaeration tower,
The storage tank (140)
Wherein a diffuser (141) for spraying upwardly the air supplied from the outside and mixing with the leachate is installed in the lower part of the inner side. delete delete

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