KR102546797B1 - Byproduct Gas and Greenhouse Gas Monitoring Devices - Google Patents

Abstract

The present invention relates to a by-product gas and greenhouse gas monitoring device which comprises: a floating collection unit which is configured inside a biological reactor, has a floating port formed in the lower part thereof, has a collection space formed therein, and is formed with a gas discharge line in the upper part thereof, wherein gas collected in the collection space is discharged to the outside through the gas discharge line; a moisture absorption unit which has a lower end connected to the gas discharge line, and is formed with a moisture absorption layer that removes moisture as the gas introduced inside passes through; and a sensor unit which measures the amount of by-product gas and greenhouse gas mixed from the gas that has passed through the moisture absorption unit.

Description

Byproduct Gas and Greenhouse Gas Monitoring Devices}

The present invention relates to a device capable of diagnosing the status of a bioreactor and monitoring the amount of greenhouse gases generated by measuring by-product gas and greenhouse gases generated in a bioreactor of a wastewater treatment facility in real time.

As a greenhouse gas, nitrous oxide (N ₂ O) is mostly generated during the biological nitrogen removal process by nitrification/denitrification in wastewater treatment facilities, and wastewater treatment facilities occupy a very important position as a greenhouse gas emission source.

However, the technology for controlling greenhouse gases emitted from wastewater treatment facilities is very lacking, and the effluent water quality standards are becoming stricter every year. technology is required.

As an example of the prior art, Korean Patent Registration No. 10-1534244 is a floating type wireless by-product gas measuring device installed at one or more measurement points in an aeration tank to measure and transmit oxygen and carbon dioxide concentration data, temperature, humidity, and atmospheric pressure data in by-product gas in real time. and; a blower for supplying oxygen or air to the aeration tank; a blower controller for controlling the blower; A wireless power measurement device for transmitting real-time data on power consumption measured by the blower; A monitoring PC connected to the floating wireless by-product gas measuring device, blower control unit, and wireless power measurement device to calculate oxygen transfer efficiency using by-product gas-related data and power consumption data, and then transmit a blower control command to the blower control unit; included. However, the floating type wireless by-product gas measuring device includes a float having a buoyancy unit so as to float in the aeration tank; a by-product gas collection case installed on the upper part of the float; a dispersion cover installed on the upper portion of the collecting case and composed of a dispersion portion having a perforated hole in the center thereof; a measuring chamber installed above the dispersing unit and having one or more by-product gas outlets formed thereon; a sensor unit for measuring the by-product gas introduced into the measuring chamber; a controller for verifying and wirelessly transmitting the data measured by the sensor unit; A guide cover installed above the by-product gas outlet of the measuring chamber to protect the sensor unit and the control unit and guide the discharge flow of the by-product gas; is formed, and a fluid inlet is formed at one point of the cover of the buoyancy unit, and an aeration tank power control system using a floating wireless by-product gas measuring device is proposed.

However, in the case of the above technology, there is no proposal for monitoring of greenhouse gases.

Republic of Korea Patent Registration No. 10-1534244

The present invention is to solve the above problems, to provide a device capable of diagnosing the condition of a bioreactor and monitoring the amount of greenhouse gas generated by measuring in real time by-product gas and greenhouse gas generated in a bioreactor among wastewater treatment facilities. am.

As a means for achieving the above object, a by-product gas and greenhouse gas monitoring device (hereinafter referred to as "the device of the present invention") is configured inside the bioreactor, a floating port is formed at the bottom thereof, and a collection space is formed therein. is formed, and a floating collection unit having a gas discharge line formed at the top to discharge the gas collected in the collection space to the outside; a moisture absorbing unit connected to the lower end of the gas discharge line and having a moisture absorbing layer formed thereon so that moisture is removed while the gas flowing into the inside passes; It is characterized in that it comprises a; sensor unit for measuring the mixing amount of by-product gas and greenhouse gas from the gas passing through the moisture absorbing unit.

As an example, the by-product gas includes carbon dioxide and oxygen, and the greenhouse gas includes nitrous oxide.

As an example, the sensor unit is composed of a first sensor unit and a second sensor unit, and a portion of the gas passing through the moisture absorption unit is allowed to flow into the first sensor unit so that the mixed amount of carbon dioxide and oxygen in the gas is sensed. It is characterized in that a portion of the gas that has passed through the moisture absorption unit is introduced into the second sensor unit so that the amount of nitrous oxide in the gas is sensed.

As an example, the gas flowing into the second sensor unit is passed through the carbon dioxide absorbing unit having the carbon dioxide absorbing layer formed at the front end so that the gas from which carbon dioxide is removed is introduced into the second sensor unit.

As an example, the carbon dioxide absorbing unit includes a housing having an inlet line at the bottom and an exhaust line connected to the second sensor unit at the top, and a carbon dioxide absorbing layer filled with a carbon dioxide absorbing agent while partitioning the housing up and down. , It is characterized in that it includes a rotating shaft that is rotationally interlocked by a driving means and extends into the carbon dioxide absorption layer, and a plurality of stirring rods protruding from the rotation shaft into the carbon dioxide absorption layer and having hot wires embedded therein.

As an example, the floating collection unit includes a collection housing having a collection space formed therein, a floating sphere surrounding the collection housing, a second rotating shaft rotated by a driving means, and a plurality of fixings protruding from the second rotating shaft. It is characterized in that it is composed of a filter plate mounted with the same inclination gradient to the bar and the fixing bar and filtering foreign substances from colliding gas and pushing bubbles to expose the surface of the water.

As an example, a coating layer containing silicone oil is applied to the surface of the filter plate.

The device of the present invention monitors by-product gases and greenhouse gases generated in wastewater treatment facilities in real time, diagnoses the state of the bioreactor and provides data on the amount of greenhouse gases, thereby satisfying water quality standards and enabling greenhouse gas reduction operations. Advantages there is

In addition, the device of the present invention has the advantage of being able to accurately sense the mixing amount of by-product gas as well as the mixing amount of nitrous oxide, especially as a greenhouse gas, among the generated gases.

1 is a schematic diagram showing the apparatus of the present invention;
2 is a schematic diagram showing an embodiment of the present invention;
3 is a schematic diagram showing an embodiment of a carbon dioxide absorbing unit as one configuration of the present invention;
4 is a side cross-sectional view showing an embodiment of a floating collecting unit as one configuration of the present invention;
5 is a plan view of the floating collection unit shown in FIG. 4;
Figure 6 is an operating state diagram of the wing in the floating collector shown in Figure 4.

Hereinafter, the present invention will be described in more detail through drawings and examples. Since the following description is for a specific example of the present invention, even if there is a conclusive and limited expression, it does not limit the scope of rights determined from the claims.

As shown in FIG. 1, the device 1 of the present invention is configured inside the bioreactor 2, a floating port 32 is formed at the bottom thereof, a collection space is formed therein, and a collection space is formed at the top. a floating collection unit 3 in which a gas discharge line 36 is formed to discharge the collected gas to the outside; a moisture absorption unit 4 having a moisture absorption layer connected to the lower end of the gas discharge line 36 and having a moisture absorption layer through which the gas introduced into the inside passes through; It is characterized in that it includes; a sensor unit (8) for measuring the mixing amount of by-product gas and greenhouse gas from the gas passing through the moisture absorption unit (4).

Here, the by-product gas includes carbon dioxide and oxygen, and the greenhouse gas includes nitrous oxide.

That is, the device 1 of the present invention can provide data on diagnosis of the state of the bioreactor by sensing by-product gas generated in the bioreactor in real time in a wastewater treatment facility, as well as sensing greenhouse gas in real time to reduce greenhouse gas emissions. By providing data on the amount generated, it is possible to reduce greenhouse gases while satisfying water quality standards in wastewater treatment facilities.

The floating collection unit 3 is configured inside the bioreactor 2, and a floating port 32 is formed at the bottom thereof to float in the bioreactor 2, and a collection space is formed inside the bioreactor. It is to capture by-product gas and greenhouse gas generated in (2).

The collected gas is discharged to the rear end through the gas discharge line 36 .

Preferably, as shown in the drawing, the floating collecting part 3 is configured in a shape with an open bottom and the floating part 32 forms a certain distance from the lower end of the side wall to the upper part, so that in the floating collecting part 3 The lower end of the float 32 forms a blocking edge submerged on the surface of the water.

The reason why the blocking border is formed is to prevent the air outside the floating collector 21 from being mixed with off-gas and greenhouse gas collected inside the floating collector 3, so that the sensor unit ( This is to increase the accuracy of sensing in 8). That is, it is to prevent the collection space formed by the floating collection unit 3 from being exposed to the outside air even when the floating collection unit 3 is shaken by various causes.

The moisture absorbing part 4 is characterized in that the gas discharge line 36 is connected to the lower end and a moisture absorption layer is formed so that moisture is removed while the gas introduced into the inside passes.

Since various known materials may be used for the moisture absorption layer in the moisture absorption portion 4, a detailed description thereof will be omitted.

In addition, as shown in the drawing, a pump 5 is configured at the rear end of the water absorbing part 4 to pass gas through the water absorbing part 4.

As shown in the drawing, it is reasonable to configure one more water absorption unit 4 at the rear end of the pump 5 to increase the water removal rate from the gas.

In this way, the water is separated from the collected gas to increase the accuracy of sensing in the sensor unit 8 at the rear end, and to control the deposition of foreign substances mixed in water in the pump 5 to cause failure will be.

As shown in the drawing, the gas that has passed through the moisture absorption unit 4 is allowed to pass through the drying unit 6 to further lower the moisture content. In the case of the drying unit 6, various well-known devices may be applied, so a detailed description thereof will be omitted.

In addition, the sensor unit 8 is composed of a first sensor unit 81 and a second sensor unit 82 as shown in FIG. 1 and the like.

Some of the gas that has passed through the moisture absorbing unit 4 and the drying unit 6 flows into the first sensor unit 81 so that the mixed amount of carbon dioxide and oxygen in the gas is sensed. In this way, the mixing amount of carbon dioxide and oxygen in the gas, that is, the mixing amount of by-product gas is measured in real time by the first sensor unit 81 so that the state of the reaction tank is monitored.

In addition, some of the gas that has passed through the moisture absorbing unit 4 and the drying unit 6 flows into the second sensor unit 82 so that the amount of nitrous oxide contained in the gas is sensed. In this way, the amount of nitrous oxide in the gas, that is, the amount of greenhouse gas mixed in is measured by the second sensor unit 82 in real time, so that the amount of greenhouse gas discharged from the reaction tank is monitored.

In particular, the gas flowing into the second sensor unit 82 passes through the carbon dioxide absorbing unit 7, which is because carbon dioxide acts as noise when the amount of nitrous oxide in the gas is measured by the second sensor unit 82. It is for controlling the excessive measurement of the amount of nitrous oxide in the gas.

The carbon dioxide absorbing portion 7 has a carbon dioxide absorbing layer 72 formed therein, so that the gas introduced from the lower end of the carbon dioxide absorbing portion 7 passes through the carbon dioxide absorbing layer 72 while the carbon dioxide is removed. It is to be discharged to the second sensor unit (82).

The carbon dioxide adsorption layer 72 is formed by filling the carbon dioxide adsorbent, and various known materials such as soda lime may be applied to the carbon dioxide adsorbent.

In this way, the carbon dioxide absorbing unit 7 is configured at the front end of the second sensor unit 82 so that the second sensor unit 82 accurately measures the amount of nitrous oxide incorporation, thereby more accurately monitoring the emission of greenhouse gases. .

Meanwhile, FIG. 2 presents an example in which the prediction unit 9 and the control unit 10 of the management server control the bioreactor 2 in conjunction with the first sensor unit 81 and the second sensor unit 82. are doing

For example, the prediction unit 9 collects data from the sensor unit 8, analyzes the data through a learning algorithm, generates a prediction model for each wastewater treatment plant, and selects wastewater based on the prediction model. It is to predict the allowable load of the treatment plant.

The prediction unit 9 collects data from the sensor unit 8, analyzes the data through a learning algorithm, generates a prediction model for each sewage and wastewater treatment plant, and selects the wastewater treatment plant based on the prediction model. It is characterized by being equipped with an artificial intelligence program that predicts the allowable load of.

Next, in the control unit 10, when the allowable load predicted by the predictor 9 deviates from the standard allowable load, selecting one or more control variables among the inflow water amount and the operation factor to control the process of the wastewater treatment plant, Process control of sewage and wastewater treatment plants is to minimize greenhouse gas emissions while satisfying discharged water quality.

Meanwhile, in the present invention, as shown in FIG. 3, an embodiment of the carbon dioxide absorbing unit 7 is proposed.

The carbon dioxide absorbing unit 7 of this embodiment includes a housing 71 having an inlet line 711 at the bottom and a discharge line 712 connected to the second sensor unit 82 at the top, and the housing 71 ), the carbon dioxide adsorption layer 72 filled with the carbon dioxide absorbent, and the rotational shaft 74 extending into the carbon dioxide absorption layer 72 while being rotationally interlocked by the driving means 73 while partitioning the carbon dioxide absorption layer 72 upward and downward, and the rotation shaft In 74, it is characterized in that it includes a stirring bar 75 protruding in plurality from the inside of the carbon dioxide adsorption layer 72 and having a hot wire 752 therein.

As mentioned above, the carbon dioxide absorbing part 7 for removing carbon dioxide from the gas is configured at the front end of the second sensor part 82, and the carbon dioxide absorbing layer 72 of the carbon dioxide absorbing part 7 continuously When carbon dioxide is excessively adsorbed on the carbon dioxide absorbent of the carbon dioxide adsorption layer 72 during operation, the carbon dioxide removal efficiency of the carbon dioxide adsorption layer 72 is lowered, so that the second sensor unit 82 cannot accurately sense nitrous oxide. There is a problem not

Accordingly, in the present invention, the rotating shaft 74 and the stirring bar 75 are configured in the carbon dioxide absorbing unit 7 so that when the carbon dioxide adsorption layer 72 is clogged, the carbon dioxide in the carbon dioxide adsorption layer 72 is removed by heat while stirring. It is to allow carbon dioxide adsorbed from the absorbent to be desorbed.

The rotating shaft 74 is to be interlocked with rotation by a driving means 73 such as a motor, and the stirring rod 75 protrudes from the rotating shaft 74 to achieve stirring and to dissipate heat at the same time will be.

To this end, the stirring bar 75 has an outer shell 751 of heat transfer material and a hot wire 752 inside the outer shell 751. ) It is connected to the wire inside so that heat is generated in the hot wire 752 by applying electricity from the electricity supply means.

With this configuration, heat is uniformly transferred to the carbon dioxide adsorption layer 72 by stirring as well as heat generated by the rotation of the stirring bar 75 to increase the desorption efficiency.

The desorbed carbon dioxide is stored in the carbon dioxide storage tank 76 to be recycled for other purposes.

In addition, in the present invention, an embodiment of the floating collecting unit 3 is presented in FIGS. 4 to 6.

The floating collection unit 3 of this embodiment is composed of a collection housing 31 having a collection space 311 formed therein, a float 32 surrounding the collection housing 31, and a driving means 33. It is characterized in that it includes a second rotating shaft 34 that rotates, and wings 35 protruding from the second rotating shaft 34 and performing rotational interlocking at a portion where the water level is formed.

When bubbles are deposited on the inner water surface of the floating collection unit 3, the collection of gas in the floating collection unit 3 is not smooth, so it is easy to sense the by-product gas and greenhouse gas of the sensor unit 8 by the collected gas. This may not be the case, but in this embodiment, when the gas covers the inner water surface of the floating collector 3, the water surface is exposed from the gas so that the gas can be collected smoothly.

The shape of the collecting housing 31 is not limited, but as shown in FIG. 4, a mountain-shaped rim is formed on the rim of the upper end, and the gas discharge line 36 is formed on the rim.

The wing 35 has a plurality of fixing bars 351 protruding from the second rotating shaft 34 and is mounted on the fixing bar 351 with the same inclination, respectively, so that foreign substances are filtered from the colliding gas g. And an example consisting of a filter plate 352 that pushes out the bubbles to expose the surface of the water is presented.

Preferably, as shown in the drawing, the filter plate 352 is such that an inclination gradient is formed in a state in which the lower end is submerged under the water surface so that the water surface is exposed by pushing the bubble B while contacting the rising gas g. .

As shown in FIG. 6, the gas (g) discharged to the water surface passes (g2) through the filter plate 352 or rises (g2) through the filter plate 352 so that foreign substances mixed in the gas (g) are removed. will be.

In this way, as the wings 35 filter foreign substances from the discharged gas, the foreign substances contained in the gas cause a load on the moisture absorbing part 4, the drying part 6, and the carbon dioxide absorbing part 7 at the rear, It is to be deposited on the sensor unit 8 to control the problem of causing an error in the sensed value.

As the filter plate 352, various known materials may be used, and a detailed description thereof will be omitted.

More preferably, a coating layer containing silicone oil is applied to the surface of the filter plate 352. By this configuration, in addition to pushing the bubbles on the water surface as mentioned above by the filter plate 352 to expose the water surface, the bubbles in contact with the filter plate 352 are defoamed.

The silicone oil is an inorganic antifoaming agent, and the silicone oil contains an organic group.

Silicon (organosilicone) and oxygen are chemically bonded, and it is artificially synthesized that does not exist in nature and has a side chain on an alkyl group.

The coating layer allows the surfactant to contain the silicone oil, and it is appropriate that the silicone oil is preferably blended in an amount of 10 to 20 parts by weight based on the total weight of the coating layer.

Through the above description, those skilled in the art will know that various changes and modifications are possible without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

2: bioreactor
3: floating collection unit
4: moisture absorption part
5: pump
6: drying part
7: carbon dioxide absorption unit
8: sensor part
9: prediction unit

Claims (8)

It is constituted inside the bioreactor, a floating collection unit is formed at the bottom, a collection space is formed therein, and a gas discharge line is formed at the top to discharge the gas collected in the collection space to the outside;
a moisture absorbing unit connected to the lower end of the gas discharge line and having a moisture absorbing layer formed thereon so that moisture is removed while the gas flowing into the inside passes; and
A sensor unit for measuring an amount of by-product gas including carbon dioxide and oxygen and a greenhouse gas including nitrous oxide from the gas passing through the moisture absorbing unit,
The sensor unit is composed of a first sensor unit and a second sensor unit, and some of the gas that has passed through the moisture absorbing unit is allowed to flow into the first sensor unit so that the mixed amount of carbon dioxide and oxygen in the gas is sensed. Some of the gas is allowed to flow into the second sensor unit so that the amount of nitrous oxide in the gas is sensed,
The by-product gas and greenhouse gas monitoring device, characterized in that the gas flowing into the second sensor unit passes through the carbon dioxide absorbing unit having the carbon dioxide absorbing layer formed at the front end so that the gas from which carbon dioxide is removed flows into the second sensor unit.
delete According to claim 1,
A by-product gas and greenhouse gas monitoring device, characterized in that a drying unit for drying moisture from the gas is further configured at the rear end of the moisture absorbing unit.
delete delete According to claim 1,
The carbon dioxide absorption unit,
A housing having an inlet line at the bottom and a discharge line connected to the second sensor unit at the top, a carbon dioxide adsorption layer filled with a carbon dioxide absorbent while partitioning the housing up and down, and a driving means rotationally interlock the housing. A monitoring device for by-product gas and greenhouse gas, characterized in that it comprises a rotating shaft extending into the carbon dioxide adsorption layer, and a plurality of stirring rods protruding from the rotation shaft into the carbon dioxide adsorption layer and having hot wires embedded therein.
According to claim 1,
The floating collection unit,
A collection housing having a collection space formed therein, a floating sphere surrounding the collection housing, a second rotating shaft rotated by a driving means, a plurality of fixing bars protruding from the second rotating shaft and the fixing bar are mounted with the same inclination gradient, By-product gas and greenhouse gas monitoring device, characterized in that composed of a filter plate that filters foreign substances from the colliding gas and pushes the bubbles to expose the surface of the water.
According to claim 7,
A by-product gas and greenhouse gas monitoring device, characterized in that a coating layer containing silicone oil is applied to the surface of the filter plate.

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