KR102655683B1 - Sewage treatment plant odor removal device and composition of deodorant - Google Patents

Abstract

The present invention seeks to remove odor from a sewage treatment plant using a more simplified odor removal device using an environmentally friendly deodorant.
In accordance with the above purpose, the present invention is a first treatment unit using a first deodorant that reduces and neutralizes and removes components contained in odor gas, and a second deodorant that removes odor components including ammonia generated in the first treatment unit. A sewage treatment plant odor removal device including a second treatment unit is provided.

Description

Sewage treatment plant odor removal device and composition of deodorant {Sewage treatment plant odor removal device and composition of deodorant}

The present invention relates to the composition of an odor removal device system and a deodorant that efficiently removes odors generated in a sewage treatment plant.

Previously, the level of emission of pollutants or harmful gases was simply regulated, but as the industry has advanced and emission standards have been strengthened worldwide, pollution due to odor is also being treated as a serious social pollution. In addition, various complaints related to odor are increasing day by day, but the technology to remove odor is not realistic enough to meet the requirements. In developed countries, the government is focusing on minimizing the occurrence of odor by enacting laws to prevent the occurrence of odor. I'm doing it.

Meanwhile, odors generated from food waste treatment plants, leather processing plants, and sludge treatment at sewage treatment plants contain harmful ingredients such as SOx, NOx, formaldehyde, H ₂ S, O ₃ , and VOCs, which cause various types of food decay and single cell damage. Gas caused by the death of spores (malodorous bacteria) is pointed out as the main cause. The characteristics of odor in each industry are reported through known research data, and in the case of sewage treatment plants, hydrogen sulfide, methyl mercaptan, etc. have been found to be odor-causing substances. Deodorization methods such as absorption, adsorption, oxidation, biological deodorization, and deodorant spraying methods are used to remove such odorous gases and substances contained in the gases. In the case of sewage treatment plants, acidic odors such as hydrogen sulfide account for most. Therefore, the chemical cleaning method by absorption is known to be the most efficient, and is currently being used universally.

In addition, because it is difficult to efficiently remove complex odors of various components by cleaning with only one agent, deodorizing systems that use acidic and alkaline agents sequentially or in combination in multiple stages have been developed and used.

Meanwhile, most current odor removal facilities use caustic soda (NaOH) in the first step to neutralize acidic odor gases through alkaline cleaning, and use sodium hypochlorite (NaOCl) in the second step to remove the remaining odor components that have not been removed. A method of removal by oxidation is used. At this time, sulfuric acid is sometimes used together to increase oxidation efficiency. This combination of chemicals can remove odorous ingredients such as hydrogen sulfide and methyl mercaptan, but in the case of sodium hypochlorite used in the second stage, the medicine itself is very irritating to the skin and respiratory tract and is highly corrosive, as well as chlorine generated during use. There is a problem in that secondary odor is generated due to gas. In addition, because the oxidizing power of the drug is high under acidic conditions, there is also a technical problem of having to use sulfuric acid to adjust the pH. These devices require three or more stages of chemical cleaning, which not only occupies a large installation area and complicates operation, but also makes it difficult to solve wastewater treatment problems that arise incidentally. The chemicals used for chemical cleaning, such as acids and alkalis, are partially replenished or replaced while operating the device to maintain deodorizing performance. In most cases, a pH sensor is installed in the deodorizing solution to measure the pH to determine the timing of chemical replenishment and replacement. You decide. This method is not linked to the level of complex odor from the actual outlet, but is based on experience and causes excessive use of chemicals. Although pH can be used as an indirect reference value to some extent, it has the disadvantage of not being able to be directly linked to real-time odor removal situations.

Meanwhile, as prior art, there are “Air Cleaning Device” in Japanese Patent Publication No. 07-096126 and “Mobile Air Purifying Device for Processing Various Types of Harmful Gases, Acid Gases, and Dusts” in Korean Patent Publication No. 10-2004-0086224. " has been introduced.

The present invention was devised to solve the conventional problems as described above, and provides two new types of cleaning fluids with completely different components from conventional cleaning fluids, and through these, odorous gases are sequentially cleaned to improve deodorizing performance. The purpose is to provide a deodorizing device that can be improved.

In addition, the deodorizing device is equipped with a complex odor sensor to measure and monitor the odor concentration in real time and automatically supplies chemicals in conjunction with the measured values, thereby creating a deodorizing device system that makes it easy to manage the deodorizing device and reduces chemical costs. We would like to provide

The deodorant of the present invention is a completely different substance from conventional detergents such as caustic soda and sodium hypochlorite, and is an environmentally friendly and stable substance. There is no additional secondary pollution such as chlorine gas, and odors from sewage treatment plants can be removed simply and efficiently.

The present invention for achieving the above object includes a reaction chamber into which air containing odorous gas is introduced; The reaction chamber is stacked in two stages at the top, and an odor discharge part is installed at the bottom to communicate with the lower layer, so that odor flows in from the lower layer through the odor discharge part, and a deodorizing liquid spray device is installed inside, and the odor discharge part is installed. Two reaction chambers that allow odors flowing in through each floor to be sequentially cleaned and deodorized; and a plurality of deodorant tanks in which two types of deodorizing liquids with different components are individually stored, each independently connected to the deodorizing liquid spraying device installed in the reaction chambers, and independently supplying the deodorizing liquid to the deodorizing liquid spraying device. Provided is a sewage treatment plant odor removal device comprising:

A fan may be provided on the side of the first-stage reaction chamber to allow external odors to flow into the reaction chamber.

The deodorant tank may be provided with a plurality of urea deodorizers and mineral deodorizers each stored independently.

The reaction chamber may be provided in plurality so that odors are independently cleaned by two types of deodorizing liquids.

Drain pipes are individually connected between the bottom of each reaction chamber and each deodorant tank, so that the deodorizing liquid accumulating at the bottom of each reaction chamber can be separately drained into each deodorant tank.

The deodorant tank is disposed lower than the reaction chamber, so that the deodorant liquid accumulated in the reaction chamber can be drained into the deodorant tank by its own weight.

A supply pipe is connected between each deodorant tank and each deodorant spray device; A pump is installed in the supply pipe to supply the deodorant stored in the deodorant tank to the deodorant spraying device.

An exhaust tower installed in communication with the uppermost (second stage) reaction chamber and discharging deodorized air through the reaction chambers; It is installed inside the discharge tower and may include a complex odor sensor that can measure the degree of odor of the deodorized air discharged through the discharge tower. The measured values of the sensor can be stored on a designated computer server by being connected to the main body's control system and connected to the Internet wirelessly or wired. Measurements can also be transmitted in real time to a designated mobile phone.

When the odor measurement value increases according to the setting value specified in the complex odor sensor, the odor removal lifespan of the deodorant has expired, so the deodorant can be automatically drained from the deodorant tank and filled with a new agent.

That is, the present invention:

In the sewage treatment plant odor removal device,

The reaction chamber that processes the object to be treated is,

first processing unit; and

A second processing unit that processes the object that has passed through the first processing unit,

The first treatment unit uses a first deodorant that removes components contained in odorous gas by reducing and neutralizing them,

The second treatment unit provides a sewage treatment plant odor removal device, characterized in that it uses a second deodorant to remove odor components including ammonia generated in the first treatment unit.

In the above, the first deodorizer is a sewage deodorizer comprising 5% to 35% parts by weight of urea (H ₂ NCONH ₂ ) and 95% to 65% parts by weight of purified water (H ₂ O). A treatment plant odor removal device is provided.

In the above, the second deodorizer is a mineral deodorizer containing ions of at least four components, including magnesium (Mg), calcium (Ca), potassium (K), and sodium (Na). A removal device is provided.

In the above, the mineral deodorizer is a sewage treatment plant characterized in that it is composed of 100% ionized ingredients in the range of 10,000ppm to 30,000ppm of magnesium, 3,000 to 10,000ppm of calcium, 10,000ppm to 30,000ppm of potassium, and 10,000ppm to 30,000ppm of sodium. Provides an odor removal device.

In the above, a first tank storing a first deodorant solution;

a second tank storing the second deodorant solution;

a first deodorant tank connected to the first tank to supply a first deodorant to the first processing unit; and

A second deodorant tank connected to the second tank to supply a second deodorant to the second processing unit,

The first deodorant tank is connected to the bottom of the first treatment unit through a drain pipe, so that the first deodorant sprayed from the first treatment unit is returned to the first deodorant tank and reused,

The second deodorant tank is connected to the bottom of the second treatment unit through a drain pipe, and the second deodorant sprayed from the second treatment unit is returned to the second deodorant tank and reused.

In the above, a discharge tower that communicates with the second processing unit to discharge the material to be treated; and

It includes a complex odor sensor disposed in the discharge tower,

The complex odor sensor connects the measured values to the control system that controls the sewage treatment plant odor removal device wirelessly or wired to the Internet, transmits the measured values to a designated computer server and stores them,

A sewage treatment plant odor removal device is provided, wherein the measured values can be transmitted in real time to a designated mobile phone.

In the above, when the odor measurement value increases with respect to the preset value in the complex odor sensor, the chemicals in the first deodorant tank and the second deodorant tank are drained, respectively, and the first tank and the second tank in which the deodorant solution is stored are respectively drained. A sewage treatment plant odor removal device is provided, wherein the deodorizers are drained from each other and the new deodorant solution is automatically filled into the first deodorant tank and the second deodorant tank.

The present invention,

As a deodorant used in sewage treatment plant odor removal devices,

The first deodorizer that treats the object to be treated first is a urea deodorizer containing 5% to 35% parts by weight of urea (H ₂ NCONH ₂ ) and 95% to 65% parts by weight of purified water (H ₂ O),

The second deodorant, which secondarily treats the object to be treated primarily by the first deodorant, contains ions of at least four components, including magnesium (Mg), calcium (Ca), potassium (K), and sodium (Na). Provided is a deodorant for a sewage treatment plant odor removal device, characterized in that it is a mineral deodorizer containing.

Through the above-described means of solving the problem, the present invention sequentially passes through a two-stage reaction chamber that sprays two types of eco-friendly deodorants that can replace the acidic, neutral, and basic cleaning solutions conventionally used, respectively, in a sewage treatment plant. The generated odor gas undergoes a chemical neutralization and reduction reaction with the deodorant and is decomposed and deodorized, and the remaining complex odor substances are also cleaned due to the strong binding force of mineral ions, thereby greatly improving deodorization efficiency. Therefore, it is possible to operate a simple yet eco-friendly odor removal system.

In addition, by attaching a complex odor sensor to the outlet and monitoring it through real-time odor measurement, it becomes convenient to operate the device, and by automatically supplying chemicals in conjunction with odor measurement values, it is expected to reduce operating costs by preventing unnecessary waste of chemicals.

Figure 1 is a diagram explaining a method for removing odor.
Figure 2 is a schematic diagram explaining the configuration of the odor removal system of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 schematically shows the configuration of the odor removal device of the present invention.

The odor removal device of the present invention consists of a two-stage reaction chamber in which air containing odor flows into the inlet 10 and reacts, and the odorous air (object to be treated) is removed in the lower layer (first processing unit 100). flows in, reacts with the deodorant sprayed through the nozzle installed on the upper ceiling of the first processing unit 100, and then communicates to the lower part of the next stage (second processing unit) through the communication of the upper ceiling again to the second processing unit 200 ) is configured to react with another deodorant sprayed from the upper ceiling of the second processing unit 200 and then finally discharged.

In the above, the inlet 10 is formed in the inlet 30 arranged at the lower part of the first processing unit 100, and the inlet communicates with the first processing unit 100 to discharge the object to be treated into the first processing unit.

Deodorants of different chemical components are individually supplied and sprayed into the first processing unit 100 and the second processing unit 200 of the reaction chamber, and each deodorant is stored and supplied in separate storage tanks 400 and 500. . The chemicals that have once been sprayed and reacted with the odor gas are designed to be recovered in separate deodorant tanks (600, 700) installed at the bottom of the reaction chamber, and they are sprayed again and reused until their performance deteriorates.

That is, the first deodorant and the second deodorant are stored as undiluted solutions in the first tank 400 and the second tank 500, respectively, and the first deodorant tank ( 600) and a second deodorant tank 700 that receives the second deodorant solution from the second tank 500 is disposed, and a second deodorant tank (700) is provided from the first deodorant tank 600 to the first processing unit 100. The first deodorant and the second deodorant are sprayed from 700) to the second processing unit 200, respectively. The sprayed deodorants are recovered and re-sprayed into the first deodorant tank 600 and the second deodorant tank 700, respectively. For this recovery and reuse, drain pipes are individually connected between the bottom of the first processing unit 100 and the second processing unit 200 and the first deodorant tank 600 and the second deodorant tank 700, respectively. It is configured to drain the deodorizing liquid that accumulates at the bottom of the reaction chamber separately into each deodorizing tank.

The first deodorant tank 600 is arranged so that a drain pipe can be connected to a position lower than the bottom of the first processing unit 100, and the second deodorant tank 700 has a drain pipe connected to a position lower than the bottom of the second processing unit 200. It is placed so that it can be connected. In this embodiment, both deodorant tanks are placed adjacent to the inlet, which is the bottom of the reaction chamber.

The final discharge outlet (20) is equipped with a sensor (310) that can measure complex odors in real time to monitor whether the concentration standards for exhaust gases in accordance with environmental laws and regulations are met, and data is transmitted to the operator in real time. It is stored on a designated computer server. In addition, by monitoring the odor concentration in real time, it is possible to know when to replace or replenish the deodorant, thereby reducing the cost of the deodorant as much as possible.

The deodorant used in the present invention improves the problems of caustic soda (NaOH) and sodium hypochlorite (NaOCl), which are widely used in the present, and is a non-toxic, environmentally friendly agent containing 5% by weight of urea (H ₂ NCONH ₂ ). A deodorant (urea deodorizer) consisting of ~ 35% by weight and 95% ~ 65% by weight of purified water (H ₂ O), and a minimum of magnesium (Mg), calcium (Ca), potassium (K), and sodium (Na). It is a mineral deodorant composed of ions from more than four ingredients.

The existing method uses three or more stages of acid and base chemicals, which takes up a lot of space and has the problem of incidentally generating acid and base waste liquid. However, the chemicals used in the present invention use only two stages to eliminate the complex wastewater generated during sewage treatment. It has the advantage of efficiently removing odors and causing no additional problems.

In the present invention, the first processing unit 100 corresponding to the first stage uses a first deodorant that reduces and neutralizes most of the components of the odorous gas to remove it, and the second processing unit 200 corresponding to the second stage uses the first deodorant generated in the first stage. Use a second deodorant that removes ammonia and other odorous substances.

The deodorant is a deodorant that can remove major components of odors generated in sewage treatment plants, such as hydrogen sulfide, methyl mercaptan, hydrocarbons, and nitrogen compounds. It consists of 5% to 35% parts by weight of urea (H ₂ NCONH ₂ ) and purified water (H ₂ O) A deodorant (urea deodorant) consisting of 95% to 65% weight is used as the first deodorant.

The second deodorant consists of at least four ions, including magnesium (Mg), calcium (Ca), potassium (K), and sodium (Na).

That is, the second deodorant is a mineral deodorant containing 100% ionized ingredients in the range of 10,000ppm to 30,000ppm of magnesium, 3,000 to 10,000ppm of calcium, 10,000ppm to 30,000ppm of potassium, and 10,000ppm to 30,000ppm of sodium.

The complex odor sensor 310 mounted on the outlet monitors the complex odor concentration in real time, and automatically replenishes or replaces the deodorant in conjunction with the measured value.

An embodiment of the present invention will be described in more detail as follows.

an inlet 30 having an inlet 10 through which the object to be treated containing odorous gas flows;

It is stacked in two stages on the upper part of the inlet 30, and odor discharge parts 40, 50 are installed on the bottom to communicate with the lower layer, so that odor flows in from the lower layer through the odor discharge part, and deodorizing liquid is inside. The first processing unit 100 and the second processing unit 200 are composed of two reaction chambers in which spraying devices 110 and 210 are installed to sequentially clean and deodorize the odor flowing in through the odor discharge unit as it passes through each floor. ;

A deodorizing liquid spraying device connected independently to a first tank 400 and a second tank 500 in which two types of deodorizing liquids with different components are individually stored, and installed in the first processing unit and the second processing unit, which are the reaction chambers. It is characterized in that it includes a plurality of deodorant tanks (600, 700), which are each independently connected to (110, 210) and independently supply deodorizing liquid to the deodorizing liquid spraying device.

A fan (not shown) may be provided on the side of the inlet 30 corresponding to the first-stage reaction chamber to allow objects to be treated, including external odors, to flow into the reaction chamber.

In the above, the reaction chamber may mean encompassing the inlet 30, the first processing unit 100, and the second processing unit 200, where a series of processes in which materials to be treated are introduced, processed, and discharged occur, The inlet 30, the first processing unit 100, and the second processing unit 200 can be regarded as individual reaction chambers stacked in 1st, 2nd, and 3rd stages, respectively.

The deodorant tank may have a plurality of urea deodorizers and mineral deodorizers stored independently in the first tank 400 and the second tank 500, respectively.

The first tank 400 and the second tank 500 independently supply two types of deodorizing liquid, a first deodorant and a second deodorant, to the first deodorant tank 600 and the second deodorant tank 700, respectively. , the first deodorant tank 600 and the second deodorant tank 700 are used to independently clean and remove malodorous objects in the first treatment unit 100 and the second treatment unit 200, respectively. It is connected to the spraying device 110 of the second processing unit 200 and supplies deodorizing agent, and the first deodorizing tank 600 and the second deodorizing tank 700 may each be provided in one or more plurality. You can.

A drain pipe is provided between the bottom of the first processing unit 100 and the bottom of the second processing unit 200 corresponding to each reaction chamber, and each of the first deodorant tank 600 and the second deodorant tank 700. Each is individually connected, and is configured to drain the deodorizing liquid accumulated at the bottom of the first processing unit 100 and the second processing unit 200 corresponding to each reaction chamber separately into each deodorizing agent tank 600 and 700.

The deodorant tanks 600 and 700 are disposed lower than the first processing unit 100 and the second processing unit 200, which are reaction chambers, so that the deodorizing liquid accumulated on the bottom of the first processing unit and the second processing unit is separated from each other by its own weight. It can be drained into the deodorant tanks (600, 700).

The first deodorant tank 600 is connected to the first spray device 110 through a supply pipe, and the second deodorant tank 700 is connected to the second spray device 210 through a supply pipe, and the supply pipe has a pump. is installed, so that the deodorant stored in the deodorant tanks 600 and 700 can be supplied to each of the deodorant spraying devices 110 and 210.

At the top of the second treatment unit 200, which is the uppermost stage (second stage) where the reaction occurs, a discharge tower 300 is installed in communication with the second treatment unit, and discharges the deodorized air through the first treatment unit and the second treatment unit.

It is installed inside the discharge tower 300 or around the discharge port, and may include a complex odor sensor 310 that can measure the degree of odor of the deodorized air discharged through the discharge tower. The measured values of the sensor 310 can be stored in a designated computer server by being connected to the control system of the main body and connected to the Internet wirelessly or wired. Additionally, the sensor's measurement values can be transmitted in real time to a designated mobile phone. This allows administrators to control the control system more conveniently and quickly.

When the odor measurement value increases relative to the set value pre-specified in the complex odor sensor 310, the odor removal lifespan of the deodorant has expired, so the agent in the first deodorant tank 600 and the second deodorant tank 700 is automatically drained. Then, the deodorants can be drained from the first tank 400 and the second tank 500, where the deodorant solution is stored, so that the first deodorant tank 600 and the second deodorant tank 700 can be filled with new chemicals.

The above embodiment can be modified in various ways while still employing the core technical idea of the present invention. For example, an inlet is formed in the first processing unit 100 without an inlet.

As described above, an efficient, simple, and eco-friendly odor removal system can be operated.

The rights of the present invention are not limited to the embodiments described above but are defined by the claims, and those skilled in the art can make various changes and modifications within the scope of the claims. This is self-evident.

Inlet (10)
Outlet (20)
Inlet (30)
First processing unit 100
Second processing unit (200)
Discharge tower (300)
Sensor(310)
First tank (400)
2nd tank (500)
First deodorant tank (600)
Second deodorant tank (700)

Claims (8)

In the sewage treatment plant odor removal device,
The reaction chamber that processes the object to be treated is,
first processing unit; and
A second processing unit that processes the object that has passed through the first processing unit,
The first treatment unit uses a first deodorant that removes components contained in odorous gas by reducing and neutralizing them,
The second processing unit uses a second deodorant to remove odor components including ammonia generated in the first processing unit,
The second deodorizer is a sewage treatment plant odor removal device characterized in that it is a mineral deodorizer containing ions of at least four components, including magnesium (Mg), calcium (Ca), potassium (K), and sodium (Na). The method of claim 1, wherein the first deodorant is a urea deodorant comprising 5% to 35% parts by weight of urea (H ₂ NCONH ₂ ) and 95% to 65% parts by weight of purified water (H ₂ O). Sewage treatment plant odor removal device. delete The method of claim 1, wherein the mineral deodorant is composed of 100% ionized ingredients ranging from 10,000 ppm to 30,000 ppm of magnesium, 3,000 to 10,000 ppm of calcium, 10,000 ppm to 30,000 ppm of potassium, and 10,000 ppm to 30,000 ppm of sodium. Sewage treatment plant odor removal device. The method of claim 1, further comprising: a first tank storing a first deodorant solution;
a second tank storing the second deodorant solution;
a first deodorant tank connected to the first tank to supply a first deodorant to the first processing unit; and
A second deodorant tank connected to the second tank to supply a second deodorant to the second processing unit,
The first deodorant tank is connected to the bottom of the first treatment unit through a drain pipe, so that the first deodorant sprayed from the first treatment unit is returned to the first deodorant tank and reused,
The second deodorant tank is connected to the bottom of the second treatment unit through a drain pipe, and the second deodorant sprayed from the second treatment unit is returned to the second deodorant tank and reused. The method of claim 1, wherein the discharge tower communicates with the second treatment unit to discharge the material to be treated; and
It includes a complex odor sensor disposed in the discharge tower,
The complex odor sensor connects the measured values to the control system that controls the sewage treatment plant odor removal device wirelessly or wired to the Internet, transmits the measured values to a designated computer server and stores them,
A sewage treatment plant odor removal device, characterized in that the measured value can be transmitted in real time to a designated mobile phone. The method of claim 6, wherein when the odor measurement value increases with respect to a preset value in the complex odor sensor, the chemicals in the first and second deodorant tanks are drained, respectively, and the first and second deodorant tanks in which the deodorant stock solution is stored are respectively drained. A sewage treatment plant odor removal device, characterized in that it is controlled to automatically fill the first deodorant tank and the second deodorant tank with new deodorant solution by draining the deodorants from each tank. As a deodorant used in sewage treatment plant odor removal devices,
The first deodorizer that treats the object to be treated first is a urea deodorizer containing 5% to 35% parts by weight of urea (H ₂ NCONH ₂ ) and 95% to 65% parts by weight of purified water (H ₂ O),
The second deodorant, which secondarily treats the object to be treated primarily by the first deodorant, contains ions of at least four components, including magnesium (Mg), calcium (Ca), potassium (K), and sodium (Na). A deodorant for a sewage treatment plant odor removal device, characterized in that it is a mineral deodorizer containing.