KR101864339B1 - Tower of chemical cleaning with a partitioned water tank - Google Patents

Tower of chemical cleaning with a partitioned water tank Download PDF

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Publication number
KR101864339B1
KR101864339B1 KR1020170146403A KR20170146403A KR101864339B1 KR 101864339 B1 KR101864339 B1 KR 101864339B1 KR 1020170146403 A KR1020170146403 A KR 1020170146403A KR 20170146403 A KR20170146403 A KR 20170146403A KR 101864339 B1 KR101864339 B1 KR 101864339B1
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South Korea
Prior art keywords
water tank
main body
liquid
gas
chemical liquid
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KR1020170146403A
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Korean (ko)
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윤영호
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주식회사 에코코어기술
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • A61L9/145—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes air-liquid contact processes, e.g. scrubbing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
    • B01D47/06—Spray cleaning
    • B01D47/063—Spray cleaning with two or more jets impinging against each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/78—Liquid phase processes with gas-liquid contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/77—Liquid phase processes
    • B01D53/79—Injecting reactants

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Biomedical Technology (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Treating Waste Gases (AREA)

Abstract

The present invention relates to a chemical liquid cleaning tower having a partitioned water tank capable of removing odors of exhaust gas through a cleaning liquid and reusing the used cleaning liquid to improve the efficiency of the liquefying scrubbing tower, and an exhaust gas inlet is formed on the outside Liquid mixing space formed at a lower portion of the chemical liquid injecting port, and a second circulation pipe connected to the outer surface of the main body and connected to the chemical liquid injecting opening, And a second circulation line connected to the gas-liquid mixing space part, and a detection sensor connected to an outer surface of the main body, having a discharge port formed on a side surface thereof and having a detection sensor for measuring pH or ORP A second water tank, and a partition wall formed between the main body and the second water tank and having an opening through which a part is opened.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a tower for chemical cleaning with a partitioned water tank,

The present invention relates to a chemical liquid cleaning tower having a divided water tank, and more particularly, to a chemical liquid cleaning tower having a divided water tank capable of removing the odor of exhaust gas through a cleaning liquid and reusing the used cleaning liquid to improve the efficiency of the chemical liquid cleaning tower The present invention relates to a chemical liquid cleaning tower.

Generally, due to continuous economic development and industrialization, emissions of air pollution are continuously increasing, and the types of air pollutants are also diversifying. In particular, there are hydrogen sulfide (H 2 S), mercaptan (R-SH), ammonia (NH 3 ) and amines (RNH 2 ) and the like, which are generated in manure treatment plants, wastewater treatment plants and various factories. It usually causes headaches or discomfort when inhaled.

Accordingly, studies are being made to remove the above-mentioned odor gas in various aspects, and various odor gas treatment techniques are known. The currently used odor gas treatment technologies include biological treatment methods such as activated carbon adsorption method, chemical liquid cleaning method, ozone oxidation method, combustion deodorization and other physical and chemical treatment methods, soil microorganism treatment method, activated sludge method and biofilter. These methods are selected depending on the processing environment in which odor gas is to be removed, and they may be used alone or in combination of two or more.

Among them, the chemical liquid cleaning method related to the present invention is a method in which a cleaning liquid is sprayed to a deodorizing unit and a malodorous gas is supplied from the lower part thereof to bring the cleaning liquid into contact with a malodorous gas. In order to effectively perform such a chemical liquid cleaning process A deodorizing device is known.

A conventional deodorizing apparatus using the chemical liquid cleaning method includes a deodorizing unit for deodorizing the deodorizing unit by contacting with a malodor gas introduced from a malodor inlet by spraying a cleaning liquid and a water storage tank for collecting the washing liquid drained from the deodorizing unit, A filter for filtering the moisture contained in the deodorized gas from the deodorizer and allowing only gas to pass therethrough, and an exhaust port through which the gas passing through the filter is discharged to the outside.

In the conventional deodorizing device having the above-described structure, the odor gas is supplied from the lower part while spraying the washing liquid to the deodorizing part, and the odor gas is brought into contact with the washing liquid.

However, in the conventional chemical liquid cleaning tower, the pH measurement and the OPR measurement are not properly performed because the steps such as the input of the chemical, the measurement of the condition in the water tank, and the overflow due to the replenishment of the fresh water are performed in one water tank. There is a problem in that the amount of deviation is large.

1. Korean Registered Patent No. 10-0966737 " Drug cleansing type deodorizing tower " (registered on June 22, 2010)

DISCLOSURE Technical Problem Accordingly, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a water tank for remedying chemicals and fresh water by converting a conventional water tank, and a water tank for pH measurement, OPR measurement and discharge, And it is a main object of the present invention to provide a chemical liquid cleaning tower having a partitioned water tank capable of not only increasing the reuse rate of chemicals but also efficiently discharging salts produced after water treatment to the outside.

The chemical liquid cleaning tower having the divided water tank according to the present invention has an exhaust gas inlet formed on the outer side thereof, an exhaust port formed on the upper side thereof, a chemical liquid jetting port provided therein, and a gas-liquid mixed space formed below the chemical liquid jetting port A first circulation line connected to the outer surface of the main body and connected to the chemical liquid injection port, and a second circulation line communicating with the main body, and a second circulation line coupled to the outer surface of the main body, And a partition wall formed between the main body and the second water tank and having an opening through which a part thereof is opened. The first water tank has a discharge port formed therein and has a detection sensor for measuring pH or ORP.

The discharge port may include a first discharge port provided below the second water tank and a second discharge port provided above the second water tank.

In addition, the second circulation line is formed between the gas-liquid mixing space part and the first water tank so as to be spaced up and down at a predetermined interval.

The chemical liquid cleaning tower having the divided water tank according to the present invention is divided into a first water tank for supplying and circulating the chemical solution and fresh water and a second water tank for discharging the water treated salt or mist, There is an effect that the salt after the water treatment can be efficiently discharged to the outside.

In addition, since a plurality of the second circulation lines are formed vertically, the circulation water can be efficiently controlled according to the concentration of the circulating water circulating from the gas-liquid mixing space portion to the first tank.

1 is a perspective view showing a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention.
2 is a rear view of a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention.
3 is a conceptual view showing a flow of fluid in a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention.
4 is a table showing the specific gravity of the reaction products produced by the reaction of the cleaning liquid and the malodor gas.
FIG. 5 is a graph showing the specific gravity of a conventional chemical solution cleaning tower and a salt solution tank having a divided water tank according to an embodiment of the present invention.
FIG. 6 is a table showing the specific gravity and mixed odor multiple of a conventional chemical liquid scrubbing column and a chemical liquid scrubbing column having a divided water bath according to an embodiment of the present invention, wherein the specific salt concentration varies from one end to the other.

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

In the following description of the present invention, however, the well-known functions or constructions will not be described in order to simplify the gist of the present invention.

FIG. 1 is a perspective view showing a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention, FIG. 2 is a rear view of a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention, 3 is a conceptual view showing a flow of fluid in a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention.

 1 to 3, a chemical liquid cleaning tower having a divided water tank according to the present invention includes a main body 100, a first water tank 200, a second water tank 300, and a partition wall 400 .

An exhaust gas inlet 110 is formed on the outer side of the main body 100 and an exhaust port 120 is formed on the upper side of the main body 100. A chemical liquid injecting hole 130 is provided in the upper portion of the main body 100, Liquid mixing space portion 140 is formed.

The malodor gas or exhaust gas flowing through the exhaust gas inlet 110 is deodorized by the cleaning liquid injected from the chemical liquid injection opening 130 in the gas-liquid mixing space 140 inside the main body 100, The deodorized exhaust gas passes through the demister 150 formed on the upper part of the main body 100 to remove mist and the like and then is discharged to the atmosphere through the exhaust port 120. The cleaning liquid is contained in the exhaust gas Depending on the liquidity of the compound causing the odor, it is selected and used in an alkaline liquid or an acidic liquid.

The first water tank 200 is connected to the outer surface of the main body 100 and includes a first circulation line 210 connected to the chemical liquid injection port 130 and a second circulation line 210 connected to the main body 100, A circulation line 220 is formed.

The first water tank 200 is provided with a fresh water replenishing line 201 and a chemical liquid input line 202 through which a fresh water replenishing and washing liquid is input. The first circulation line 210 and the circulation pump 203 are installed.

The fresh water and the washing liquid to be supplied to the first water tank 200 from the new water replenishing line 201 and the chemical liquid inlet line 202 are discharged through the circulation pump 203 and the first circulation line 210, (130).

The second circulation line 220 is communicated between the first water tank 200 and the gas-liquid mixing space 140. After the cleaning liquid, the fresh water, and the exhaust gas react with each other in the gas-liquid mixing space 140 The circulating water having a low concentration of the generated salt can be introduced into the first water tank 200 and reused.

In addition, the second circulation line 220 is formed between the main body 100 and the first water tank 200 by a plurality of spaced apart from each other at regular intervals. The specific gravity measuring unit 501 is installed in each of the second circulation lines 220 and the specific gravity measuring unit 501 is connected to each of the second circulation lines 220 in the gas- The specific gravity of the circulating water can be measured.

In addition, since the plurality of second circulation lines 220 are formed in the upper and lower portions, the reaction product generated after the cleaning liquid, the fresh water, and the exhaust gas react with each other in the gas-liquid mixing space portion 140, To the first water tank 200 from a lower level.

Accordingly, the second circulation line 220, which is formed in accordance with the specific gravity of reaction products generated after the cleaning liquid, the fresh water, and the exhaust gas react with each other, is sequentially opened and closed from the bottom of the second circulation line 220, There is an effect that it can be efficiently reused.

Next, the second water tank 300 is connected to the outer surface of the main body 100, and a discharge port 310 is formed on a side surface thereof. An ORP meter 321 for measuring ORP and a pH meter A detection sensor 320 including a sensor 322 is formed. The second water tank 300 is installed adjacent to the first water tank 200. The first water tank 200 and the second water tank 300 are separated from each other by a diaphragm, (140) is designed to discharge the salt generated by the reaction of the cleaning liquid and the exhaust gas.

The chemical liquid cleaning column having the divided water tank according to the present invention is a method for removing odor substances due to chemical reaction, not using the solubility of the malodorous substance in water, unlike the conventional cleaning column, To form a product, and when the reactants are all reacted to convert into a product, a conversion rate of 100% or a reaction rate of 100% is produced.

On the other hand, in the case of a chemical reaction using a washing liquid, the reaction product and the product are subjected to a reversible reaction which varies depending on the concentration of the reactant and the product, not the irreversible reaction which proceeds only on one side. When the concentration of the reactant is larger than the concentration of the product, The reaction proceeds slowly or rather returns to the reactant.

As described above, in the gas-liquid mixing space part 140, a salt, which is a product, is formed by the reaction of the cleaning liquid and the exhaust gas, and the salt is generated in the gas-liquid mixing space part 140 in a large amount, Liquid mixing space 140, the efficiency of removing the malodor becomes low, so that the concentration of the reactant is increased by further supplementing the washing liquid or the fresh water .

The salt formed by the reaction between the cleaning liquid and the exhaust gas in the gas-liquid mixing space 140 is precipitated in the lower part of the gas-liquid mixing space 140, so that the salt is formed in the opening 410 of the partition wall 400 Liquid mixing space portion 140 to the outside through the discharge port 310 formed in the second water tank 300 so that the concentration of the salt in the gas-liquid mixing space portion 140 can be lowered have.

The discharge port 310 is divided into a first discharge port 311 provided on the lower side of the second water tank 300 and a second discharge port 312 provided on the upper side of the second water tank 300 .

The first valve 311a is formed in the first outlet 311 to open and close the first valve 311a according to the concentration of the salt moved in the gas- The reaction product can be controlled inside. The second outlet 312 is formed on the upper side of the second water tank 300 and the second valve 312a is formed on the second outlet 312 so that the reaction product When this overflow phenomenon occurs, it can be automatically discharged to the outside.

The detection sensor 320 senses the pH or ORP of the circulating water flowing in the gas-liquid mixing space 140, the first water tank 200 and the second water tank 300, And the control unit 500 controls the flow rate of the flow of the second circulation line 220 measured by the specific gravity measuring unit 501 installed in each of the second circulation lines 220 And receives information on the weight of the circulation water.

At this time, the controller 500 controls the opening and closing of the respective valves of the second circulation line 220, which are vertically spaced from each other according to the specific gravity of the washing liquid filled in the gas-liquid mixing space part 140 do.

Next, the partition 400 is formed between the main body 100 and the second water tank 300, and an opening 410 through which a part thereof is opened is formed. 2, the partition 400 may be installed in the first water tank 200, the rear surface of the second water tank 300, and the outer surface of the main body 100.

The opening 410 is formed in the partition wall 400 such that the second water tank 300 communicates with the main body 100. The opening 410 extends from a lower side of the partition wall 400 to a predetermined height And an opening portion (not shown) corresponding to the opening portion 410 is formed on the side surface of the main body 100.

In the main body 100, the cleaning liquid and the exhaust gas react with each other to remove odors and mist, and the gas is discharged to the atmosphere through the exhaust port 120. The salt or mist, which is a reaction product, Liquid mixing space part 140 located at a lower portion of the main body 100. The gas-

The reaction product formed in the gas-liquid mixing space part 140 is settled from the bottom so that the opening part 410 opened from the lower side of the partition wall 400 to the intermediate height of the partition wall 400, And the reaction product is moved to the second water tank 300.

If the opening 410 is formed larger than half of the size of the partition 400, not only the reaction product but also the reusable cleaning liquid and the fresh water are transferred to the second water tank 300, The barrier ribs 410 may be formed to be smaller than half the size of the barrier ribs 400.

3, in the chemical liquid cleaning tower having the divided water tank according to the present invention constructed as described above, exhaust gas is introduced into the main body 100 through the exhaust gas inlet 110, The washing liquid and the fresh water are injected into the water tub 200 and the washing liquid and the fresh water are injected from the chemical liquid injection opening 130 to react with the exhaust gas in the gas mixing space part 140. The exhaust gas, To the outside.

In addition, the reusable cleaning liquid and fresh water among the reaction products reacted in the gas-liquid mixing space 140 are circulated to the first water tank 200 through the first circulation line 210 to increase the use rate of the cleaning liquid material, The middle salt or must is moved to the second water tank 300 through the opening 410 of the partition wall 400 and discharged to the outside through the outlet 310 connected to the second water tank 300 .

The pH or ORP of circulating water flowing in each of the gas-liquid mixing space 140, the first water tank 200 and the second water tank 300 is measured through the detection sensor 320, The control unit 500 controls the opening and closing of the valve of the second circulation line 220 according to the specific gravity of the cleaning liquid that has reacted in the gas-liquid mixing space unit 140, A chemical liquid cleaning tower capable of automating the circulation and the discharge of the salt or mist.

Accordingly, the chemical liquid cleaning tower having the divided water tank according to the present invention is divided into the first water tank 200 for replenishing and circulating the chemicals and the fresh water, and the second water tank 300 for measuring pH and ORP and discharging the salt , It is possible to increase the performance and efficiency of the chemical liquid cleaning column having the partitioned water tank as described below.

4 is a table showing the specific gravity of the reaction products produced by the reaction of the cleaning liquid and the malodor gas.

(NH 3 ), hydrogen sulfide (H 2 S), methyl mercaptan (CH 3 SH), acetaldehyde (RCHO), which are one of the 22 major odorous substances that fall under the Anti-Odor Control Law, Chemical reaction mechanism with sulfuric acid (H 2 SO 4 ), caustic soda (NaOH), and sodium hypochlorite (NaOCl).

As shown in FIG. 4, when the specific gravity is compared with the water ratio of 1.0 as shown in FIG. 4, the resulting salt is in the range of 1.2 to 2.7. When the reaction is completed, Liquid mixing space portion 140 and also forms crystals when left standing for a long time.

These crystals (Na 2 SO 4 ) are mechanically injected into the second circulation line 220 to shorten the life of the pump or block the chemical liquid injecting opening 130 to raise the maintenance cost and chemically smooth Liquid mixing space part 140 and the partition wall 400 having the opening part 410 formed in the second water bath part 300. In this case, It is possible to prevent the liquid chemical reaction rate from being inhibited.

FIG. 5 is a graph showing the specific gravity of a conventional chemical liquid cleaning tower and a chemical liquid cleaning tower having a divided water tank according to an embodiment of the present invention, and FIG. 6 is a graph showing the specific gravity of a conventional chemical liquid cleaning tower, 4 is a table showing the specific gravity of salt and complex odor multiple of a chemical liquid cleaning tower having a divided water tank according to an example.

As shown in FIG. 5 to FIG. 6, the complex odor drainage change according to the salt changes in the chemical solution washing tower having the conventional chemical solution washing tower and the partitioned water tank according to the present invention, based on the specific density of water, In the case of the conventional liquid chemical washing tower, the specific gravity was maintained at 1.0670 until the 10th day of the experiment, and within 15 days, the specific gravity of salt was increased from 1.0810 to 1.1000 on 30th day, , Which is 669 times to 1,000 times, and it did not satisfy 500 times that of the mixed odor drainage regulation.

On the other hand, in the case of the chemical liquid cleaning tower having the partitioned water tank of the present invention, the specific gravity increased to 1.0580 at 30 days after the initial specific gravity of 1.0020, but increased to 60% or less based on 30 days as compared with the conventional chemical liquid cleaning tower. In the case of complex odor drainage, it is confirmed that it maintains 448 times less than 500 times.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

100:
110: exhaust gas inlet
120: Exhaust port
130:
140: gas-liquid mixing space part
150: Demister
200: First tank
201: New water supplement line
202: chemical solution line
203: circulation pump
210: first circulation line
220: second circulation line
300: Second tank
310: Outlet
311: First outlet
311a: first valve
312: second outlet
312a: the second valve
320: Detection sensor
321: ORP meter
322: pH meter
400:
410: opening
500:
501: specific gravity measuring section

Claims (3)

And a gas-liquid mixing space formed at a lower portion of the chemical liquid injecting port, wherein the gas-liquid mixing chamber is formed at an outer side thereof with an exhaust gas inlet port, at an upper portion thereof with an exhaust port,
A first circulation line coupled to an outer surface of the main body and connected to the chemical liquid injection port, and a second circulation line communicating with the main body;
A second water tank coupled to an outer surface of the main body and having a discharge port formed on a side surface thereof and having a detection sensor for measuring pH or oxidation reduction potential (ORP); And
And a partition wall formed between the main body and the second water tank and having an opening through which a part is opened,
Wherein the second circulation line is formed between the main body and the first water tank so that the second circulation line is formed by a plurality of spaced-apart upper and lower spaces.
The method according to claim 1,
The first water tank and the second water tank are formed separately from each other by a diaphragm,
The discharge port
A first outlet provided below the second water tank, and a second outlet provided above the second water tank, wherein the second outlet is provided below the second water tank.
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KR1020170146403A 2017-11-06 2017-11-06 Tower of chemical cleaning with a partitioned water tank KR101864339B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102230332B1 (en) * 2021-02-08 2021-03-22 (주)에스에스에코텍 Variable setting type deodorizer and deodorization method
KR102693585B1 (en) * 2024-05-31 2024-08-12 (주)에스에스에코텍 Energy-saving deodorizer through automatic circulation pump control

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200418205Y1 (en) * 2006-03-23 2006-06-09 여일엔지니어링(주) Scrubber system for cleaning harmful process gas like nitrogen oxides
KR100966737B1 (en) 2010-01-05 2010-06-29 대명엔텍(주) Deodorizing tower for chemical cleaning
KR20100121713A (en) * 2009-05-11 2010-11-19 아쿠아셀 주식회사 Wet scrubber
KR101443157B1 (en) * 2014-05-30 2014-09-22 (주)한성플랜트 Apparatus for purification of pollution gas
KR101553927B1 (en) * 2015-02-27 2015-09-17 (주)성온엘앤씨 Stench reducing apparatus with chemical recycling type
KR101608195B1 (en) * 2016-01-29 2016-04-01 (주)이화에코시스템 Chemical cleaning and deodorizing device having a foam salt removal

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200418205Y1 (en) * 2006-03-23 2006-06-09 여일엔지니어링(주) Scrubber system for cleaning harmful process gas like nitrogen oxides
KR20100121713A (en) * 2009-05-11 2010-11-19 아쿠아셀 주식회사 Wet scrubber
KR100966737B1 (en) 2010-01-05 2010-06-29 대명엔텍(주) Deodorizing tower for chemical cleaning
KR101443157B1 (en) * 2014-05-30 2014-09-22 (주)한성플랜트 Apparatus for purification of pollution gas
KR101553927B1 (en) * 2015-02-27 2015-09-17 (주)성온엘앤씨 Stench reducing apparatus with chemical recycling type
KR101608195B1 (en) * 2016-01-29 2016-04-01 (주)이화에코시스템 Chemical cleaning and deodorizing device having a foam salt removal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102230332B1 (en) * 2021-02-08 2021-03-22 (주)에스에스에코텍 Variable setting type deodorizer and deodorization method
KR102693585B1 (en) * 2024-05-31 2024-08-12 (주)에스에스에코텍 Energy-saving deodorizer through automatic circulation pump control

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