JP2002309530A - Cleaning device and cleaning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively restrict the atmospheric air pollution due to the exhaust gas. SOLUTION: The light output from a light projecting part 11 is reflected by a reflecting plate 13, and received by a receiver part 12. A concentration detecting part 31 analyzes a change of the spectrum of the light received by the light receiver part 12, and measures the concentration of the pollutant included in the atmospheric air. When the measured concentration exceeds the predetermined threshold value, the purified water is sprayed from purified water spraying parts 4-1 and 4-2 to eliminate the pollutant.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a purification apparatus and method for purifying the atmosphere by using a liquid such as water and causing the liquid to absorb substances present in the atmosphere.

[0002]

2. Description of the Related Art In recent years, in the field of road traffic, the problem of air pollution due to exhaust gas emitted from vehicles has been greatly highlighted, and various systems for removing atmospheric pollutants have been proposed. ing.

For example, JP-A-11-90173 discloses that the inner wall of a tunnel is covered with a porous body, and the porous body removes pollutants such as nitrogen oxides present in the atmosphere. I have.

Japanese Patent Application Laid-Open No. 2000-45208 discloses that the surface of a road is covered with a photocatalyst such as titanium dioxide, and the photocatalytic reaction of titanium dioxide is used to remove pollutants emitted by vehicles. Have been.

[0005]

However, the systems disclosed in these publications use a catalyst that adsorbs pollutants in the atmosphere, and among the pollutants that are present, the surface of the catalyst is not affected. Only those in contact with are removed. Therefore, there is a problem that the amount of contaminants that can be removed is not sufficient.

Further, Japanese Patent Application Laid-Open No. 7-241432 discloses a technique in which a voltage is applied to reduce the oxidation-reduction voltage, and water is sprayed on exhaust gas passing through a duct to remove harmful substances contained in the exhaust gas. A purification device is disclosed. It is disclosed that this purifying device is installed at an intersection, for example.

However, even in such an apparatus for purifying the air passing through the duct, the amount of the air that can be collected and purified is a small amount of the air existing around the intersection, and is described in the above-mentioned publication. Similar to the disclosed one, there was the problem that the amount of contaminants that could be removed was not sufficient.

The present invention has been made in view of such circumstances, and is intended to remove substances present in the atmosphere and purify the atmosphere.

[0009]

In order to solve the above-mentioned problems, a first purifying apparatus to which the present invention is applied comprises measuring means for measuring an amount of a predetermined substance present in the atmosphere, and measuring means. A determination means for determining whether the amount of the substance measured by the method exceeds a predetermined threshold, and a determination means
When it is determined that the amount of the substance exceeds the threshold, purified water supply means for supplying purified water absorbing the substance to the road is provided.

[0010] This purifying device is installed on, for example, an expressway, a general road, or an intersection.

The measuring means is, for example, the density detecting unit 3 shown in FIG.
1 and the determination unit is configured by, for example, the determination unit 32 of FIG. 3. The purified water supply unit is configured by, for example, FIG.
Of the purified water supply units 4-1 and 4-2.

The measuring means measures the amount of suspended substances such as gases such as nitrogen oxides, carbon monoxide, nitrogen dioxide, photochemical oxidants, benzene, trichloroethylene and tetrachloroethylene as substances existing in the atmosphere. Or measure the concentration. On the road, many of these substances are contained in the exhaust gases emitted by vehicles traveling on the road. The substance to be measured is desirably a substance that has an adverse effect on the human body, the environment, or a running vehicle, or an object or information that supports the existence of these substances. The measuring means irradiates the atmosphere with light, for example, and measures the amount of gas such as nitrogen oxides in the atmosphere according to the degree of attenuation of light having a specific wavelength in the irradiated light. In addition, the measuring means collects a part of the air, filters the air with a filter, and measures the weight difference before and after the filtration to determine the amount of the object (suspended particulate matter (SPM)) in the air. Measure.

The purified water supplied by the purified water supply means may be a liquid such as pure water, tap water, rainwater, or a solution.

[0014] The purified water supply means flows purified water on the road surface or sprays purified water from above the road surface.

As a result, a predetermined substance existing in the atmosphere can be removed. In particular, it is possible to remove pollutants causing air pollution contained in exhaust gas emitted from vehicles running on roads. Further, since the amount of a predetermined substance present in the atmosphere is measured and the purified water is supplied when the amount is higher than a preset threshold, compared to the case where the purified water is always supplied, The amount of purified water used can be suppressed.

Further, a small amount of purified water may be supplied at all times, and a large amount of purified water may be supplied if the measured amount of the substance is higher than a preset threshold.

Further, the purified water supplied to the road surface is wound up by the tires of the running vehicle and becomes mist. Substances present in the atmosphere are also removed by the mist-like purified water generated thereby.

[0018] The measuring means may measure the amount of the substance based on the intensity of light of a specific wavelength absorbed by the substance.

The wavelength of light absorbed by each substance existing in the atmosphere is different. The absorption of light by a substance is called light attenuation. Using this, the amount of a predetermined substance existing in the atmosphere is measured based on the change in the intensity of light having a predetermined wavelength, that is, the amount of light attenuation.

In this case, the measuring means simply determines the amount of the emitted light based on the amount of attenuation of the light that has reached the light receiving portion without being absorbed or scattered by a substance present in the air during propagation. Measure the amount of substances in the atmosphere.

When the amount of the substance in the atmosphere is measured based on the amount of light attenuation, the distance is preferably longer. This is because when the distance between the light projecting unit and the light receiving unit, that is, the optical path is short, the amount of attenuation of the light removed from the light projecting unit decreases. That is, the difference between the attenuation amounts of the case where the pollutant is large and the case where the pollutant is small is small. For this reason, the measurement accuracy of the pollutant amount deteriorates.

Therefore, the measuring means can emit the light so as to cross the road diagonally and measure the amount of the substance. In this case, the measuring means is arranged, for example, as shown in FIG.

Thus, for example, as compared with the case where the measuring means is installed so that the optical path of the emitted light crosses the road 1 almost vertically as shown in FIG. Can be long.

[0024] The measuring means may measure the amount of the substance present in the atmosphere at the shoulder of the road.
Here, the road shoulder means a peripheral point of a road to which purified water is supplied. In this case, the measuring means is arranged, for example, as shown in FIG. Exhaust gas generated from vehicles traveling on the road spreads around the road. As a result, residents around the road are affected by air pollution. Therefore, if you measure the concentration of substances in the air at points where you do not want to generate air pollution (for example, near houses near roads)
The supply of purified water can be controlled according to the degree of influence on the periphery of the road.

[0025] The measuring means may measure the amount of the substance at the median strip of the road. By installing the measuring means in the median, most of the surroundings of the measuring means are surrounded by the road on which the vehicle passes. Thereby, the predetermined substance on the road can be measured without being affected by the wind direction of the road. Also, measurements can be made over the length of the median strip as long as the median strip continues.

The purified water supply means can make the purified water into a mist and spray it into the air. When the vehicle is traveling at a low speed, such as when the road is congested, the tires of the vehicle do not roll up water, so that no fog is generated in the atmosphere. Thus, the purified water supply means supplies the purified water in the form of mist into the atmosphere in advance to remove a predetermined substance existing in the atmosphere.

The purified water supply means may spray purified water from a height corresponding to the exhaust port of the traveling vehicle. In this case, for example, the purified water supply means is as shown in FIG.
Is installed at almost the same height as the exhaust port 21A. Thus, the exhaust gas discharged from the exhaust port 21A can be directly covered with the mist-like purified water, so that the pollutants can be more effectively removed.

[0028] The purified water supply means can make the purified water flow on the road. For example, the purified water supply means
As shown in FIG. 13, it is installed in the median strip 1-3.

By flowing purified water on the road,
Since purified water is not applied to the vehicle, dirt on the vehicle is reduced. In addition, since purified water does not fall directly on a window such as a windshield of a vehicle, the driver is not surprised by, for example, flying when the weather is good, and the view of the vehicle is not obstructed.

[0030] The purified water supply means is provided at a position crossing the road, and can supply purified water in a curtain shape. For example, by providing a plurality of purified water supply means as shown in FIG. 12 at predetermined intervals, air pollution can be further suppressed.

For example, in a tunnel, exhaust gas generated by running a vehicle is concentrated in the tunnel.
The concentrated air flows out from the entrance and the exit of the tunnel, and contaminates the air near the entrance and the exit of the tunnel. Therefore, by providing curtain-shaped purified water supply means at each of the entrance and the exit of the tunnel, the purified air flows out of the tunnel, so that air pollution near the entrance and the exit of the tunnel can be prevented.

The purified water supply means is installed in the tunnel, and can spray a fire extinguishing liquid for fire or spray purified water. In this case, the purified water supply means is, for example, a purified water supply unit 142 shown in FIG.
And installed on the ceiling of a tunnel. The purified water supply means sprays a fire extinguishing liquid from a fire extinguishing spray nozzle when a fire is detected by a fire sensor (not shown), or when it is determined that contaminants are present at a predetermined concentration or more, the air Spray purified water from the spray nozzle for purification.

The vehicle further includes speed measuring means for measuring an average speed of the traveling vehicle, and the purified water supply means sprays purified water or supplies purified water based on the average speed measured by the speed measuring means. It can be made to spray in the form of a mist.

The speed measuring means is constituted by, for example, a speed calculating section 61 shown in FIG. When the speed of a vehicle traveling on a road is slow, a large amount of exhaust gas is discharged per unit time, so that a large amount of purified water is required to purify the exhaust gas. On the other hand, when the speed of the vehicle traveling on the road is high, the amount of exhaust gas discharged per unit time is small, so that it can be purified with a small amount of purified water. Therefore, when the average speed of the vehicle measured by the speed measuring means is lower than a predetermined threshold value, mist-like purified water is sprayed, and when the average speed is faster than the predetermined threshold value, the purified water is sprayed on the road surface.

As shown in FIG. 9, for example, the speed measuring means determines the timing at which the light emitted from the light emitting section 11-1 is blocked by the vehicle and the time at which the light emitted from the light emitting section 11-2 is changed by the vehicle. The time difference between the interrupted timings is measured, and the speed of each vehicle is measured from the time difference and the interval between the measuring devices 3A-1 and 3B-1. Further, the speed measuring means may acquire the speed (average speed) of the vehicle based on information notified from a management center managing traffic. Further, a sensor for measuring the speed may be provided.

The purified water supply means can control and supply the purified water amount according to the amount or concentration of the substance measured by the measuring means.

[0037] The purified water supply means can be installed so that the installation density increases in order in the traveling direction of the vehicle. Here, the digestive juice component and the purified water component may be different, or the digestive juice component and the purified water component may be the same, and the amount of water may be different. In this case, the purified water supply means is installed, for example, as shown in FIG.

Thus, it is possible to prevent the driver's view from being suddenly interrupted. In addition, even if it is not raining, even if water suddenly falls or fog is generated by purified water supply means, the amount gradually increases, so it may surprise the driver Absent.

Further, the purified water supply means can supply the purified water so that the supply amount of the purified water sequentially increases along the traveling direction of the vehicle. For example, FIG.
As shown in FIG. 4, the amount of purified water to be sprayed is gradually increased based on a predetermined position. This allows
The same effect as in the case where the purified water supply means is installed so that the installation density increases in order can be obtained.

[0040] The purified water supplied by the purified water supply means can be alkaline. For example, the purified water contains calcium hydroxide. Therefore,
Since contaminants such as nitrogen oxides and sulfur dioxide are acidic as described above, it is possible to remove contaminants more effectively by spraying alkaline purified water, utilizing neutralization. Become.

The purified water supply means is provided on both sides of the road, and the wind direction detecting means for detecting the wind direction and the wind direction detecting means when the determining means determines that the amount or concentration of the predetermined substance exceeds the threshold value. Selecting means for selecting purified water supply means for supplying purified water in accordance with the wind direction detected by the means.

The wind direction detecting means is constituted by, for example, a wind direction measuring device 122 shown in FIG.
The switching unit 131 shown in FIG.

According to the wind direction detected by the wind direction detection means, the purified water supply means on the leeward side of the purified water supply means installed on the road and its periphery is operated to supply purified water. Thereby, the pollutants generated on the lee can be removed by the purified water supplied by the purified water supply means on the lee. By operating the leeward purified water supply means affected by air pollution, the supply amount of purified water can be suppressed.

Before the supply of purified water is started by the purified water supply means, a display means for displaying warning information may be further provided.

This warning information is a message notifying the driver of the vehicle that the purified water is to be sprayed, for example, a message such as “Spray purified water. Be careful when driving.” Is done. As a result, the driver can confirm in advance that the purified water will be sprayed, so that suddenly spraying the purified water will obstruct the field of view and prevent a surprised driving mistake. Can be.

The warning information may be given by any method as long as it can draw the driver's attention. For example, a caution may be alerted by a warning sound or the like.

A recovery means for recovering the purified water supplied by the purified water supply means, an inspection means for inspecting the quality of the purified water recovered by the recovery means, and the quality of the purified water inspected by the inspection means being equal to a predetermined value Quality-determining means for determining whether or not the quality of the purified water is maintained, and the purified water supply means, when the quality-determining means determines that the purified water has a predetermined quality, the recovery means The recovered purified water can be reused.

For example, the collecting means is constituted by the waste water collecting tank 35 shown in FIG. 3, and the detecting means and the quality judging means are constituted by, for example, the water quality judging section 37 shown in FIG.

The quality judging means judges the quality of the purified water by measuring the content of the substance contained in the purified water. For example, the larger the amount of calcium hydroxide used to neutralize pollutants in purified water, the better the quality of purified water, and the smaller the amount of nitrogen oxides and carbon monoxide absorbed in purified water. The quality of purified water is good.

As long as usable quality is maintained, wasteful use of resources can be suppressed by repeatedly using purified water.

When the quality judging means judges that the quality of the purified water does not maintain the predetermined quality, a disposal means for discarding the purified water collected by the collecting means can be further provided.

The purified water supply means may be provided downstream of the measurement means with respect to the traveling direction of the vehicle on the road.

Purified water can be supplied by purified water supply means in accordance with the concentration of the predetermined substance discharged from each vehicle traveling on the road, and the measured predetermined substance discharged from the vehicle can be purified.

A second purification device of the present invention purifies exhaust gas discharged from a vehicle according to a speed measuring means for measuring a speed of a vehicle traveling on a road and a speed of the vehicle measured by the speed measuring means. And purified water supply means for supplying purified water to the road.

The magnitude of the number of vehicles traveling on the road can be determined based on the speed of the vehicles traveling on the road, and the magnitude of the amount of a specific substance discharged from the vehicle can be estimated from the magnitude of the number of vehicles. . By controlling the supply of purified water according to the speed of the vehicle, the amount of purified water used can be suppressed according to the amount of the specific substance.

According to the purification method of the purification apparatus of the present invention, a measuring step of measuring an amount of a predetermined substance existing in the atmosphere and a step of determining whether the amount of the substance measured by the processing of the measuring step exceeds a predetermined threshold value A determining step of determining whether or not the processing is performed, and a purified water supplying step of supplying purified water for absorbing the substance onto the road when the amount of the substance is determined to exceed the threshold value by the processing of the determining step. It is characterized by.

The measuring step is constituted by, for example, step S1 of FIG. 4, the determining step is constituted by, for example, step S2 of FIG.
For example, it is configured by step S4 in FIG.

[0058]

FIG. 1 is a perspective view showing an example of the configuration of a purification apparatus to which the present invention is applied.

The road 1 is provided with a lane 1-1 and a lane 1-2, and outlined arrows indicate the traveling directions of the respective lanes. A drain groove 2-1 is provided on the shoulder side of the lane 1-1, and a drain groove 2-2 is provided on the shoulder side of the lane 1-2. Note that, in this example, the vehicle 21 is running on the lane 1-2.

The measuring device 3-1 provided on the shoulder of the lane 1-1 is provided with the light projecting unit 11 and the light receiving unit 12, and the measuring device provided on the shoulder of the lane 1-2. The reflection unit 13 is provided in 3-2. The light emitted from the light projecting unit 11 is reflected by the reflector 13 across the road 1 in a direction substantially perpendicular to the longitudinal direction, as shown by a dotted line in FIG. Received. Information about the light received by the light receiving unit 12 is output to a density detecting unit 31 (FIG. 3) described later, and is included in the air existing on the road 1 (on the optical path of the light emitted from the light projecting unit 11). The amount of contaminants being detected is detected (measured).

The pollutants whose concentration is detected by the concentration detector 31 are harmful substances such as nitrogen oxides, sulfur dioxide, carbon monoxide, and nitrogen dioxide contained in exhaust gas discharged from vehicles. is there.

The purified water supply unit 4-1 provided on the shoulder of the lane 1-1 and the purified water supply unit 4-2 provided on the shoulder of the lane 1-2 are respectively installed underground. The purified water supplied from the supply pipe (pipe 51)
Sprinkle on top. Then, the purified water sprayed on the road 1 absorbs substances contained in exhaust gas and the like emitted by vehicles traveling on the road 1 and purifies the atmosphere. In addition, Road 1
The purified water sprayed on the surface is wound up by the tires of vehicles running on the road 1, becomes a mist, is again sprayed on the road 1, absorbs pollutants in the atmosphere, and purifies the atmosphere.

FIG. 2 shows purified water supply units 4-1 and 4-
2 (hereinafter, when it is not necessary to distinguish each of the purified water supply units 4-1 and 4-2 individually,
It is referred to as purified water supply unit 4. FIG. 9 is a diagram illustrating an example of a spray nozzle installed in another configuration.

The spray nozzle applies pressure to the sprayed purified water and sprays it from an injection port (nozzle orifice). The spray nozzle supplies purified water to a rotating disk and sprays it by centrifugal force. However, in the purified water supply unit 4 and the like, switching is performed as necessary. For example, in the example of FIG. 9 described later, when the average speed of the traveling vehicle is low, the spray nozzle that sprays the mist-like purified liquid is selected, and when the average speed is high, the purified liquid is sprayed on the surface of the road 1. The spray nozzle to spray is selected as follows.

The spray nozzle 4A shown in FIG. 2 (A) and the spray nozzle 4C shown in FIG. 2 (B) correspond to the shapes of the noise orifices 4B and 4D, for example, as shown in FIG. Spray pattern (shape of spray ejected from noise orifice)
Spray purified water with.

The purified water sprayed by the purified water supply units 4-1 and 4-2 having such a spray nozzle is
It is hoisted by vehicles traveling on the road 1 and adsorbs and removes pollutants. The purified water (drain) containing the pollutant flows into the drain 2-1 or 2-2 and is collected by the drain collection tank 35 (FIG. 3).

The display device 5-1 provided on the shoulder of the lane 1-1 displays a message to warn the driver of the vehicle traveling on the lane 1-1 in advance that spraying of purified water is to be performed. . Similarly, the display device 5-2 provided on the shoulder of the lane 1-2 also displays a message to the driver of the vehicle traveling on the lane 1-2. The display of the display devices 5-1 and 5-2 is controlled by a display control device 34 described later.

FIG. 3 is a block diagram showing a configuration example of a purification device to which the present invention is applied. Each configuration shown in FIG. 3 is installed, for example, in the ground near the road 1 shown in FIG.

The concentration detecting section 31 measures the concentration of the pollutant in the atmosphere through which the light emitted from the light projecting section 11 has passed, based on the output from the measuring device 3-1.

For example, the concentration detecting section 31 analyzes which wavelength light is absorbed by the substance which is emitted from the light projecting section 11 and is received by the light receiving section 12,
Measure the concentration of a given contaminant. That is, the concentration detector 31 measures the concentration of the contaminant based on a change in the spectrum during the propagation of light.

Information on the concentration of the pollutant detected (measured) by the concentration detector 31 is output to the determiner 32.

The determination section 32 determines whether or not the concentration of the contaminant (concentration of the contaminant existing in the air) detected by the concentration detection section 31 exceeds a predetermined concentration. That is, the determination unit 32 has a concentration as a threshold for each substance to be measured, and determines based on the threshold.

When the determining unit 32 determines that the concentration of the predetermined pollutant contained in the atmosphere of the road 1 exceeds the set threshold value, it controls the display control unit 34 to Display device 5 that warns the user to spray
-1, and 5-2 are displayed.

When the determining unit 32 determines that the concentration of the predetermined pollutant contained in the air on the road 1 exceeds the set threshold value, the determining unit 32 controls the valve 33 to open the valve. Then, purified water is sprayed on the road 1 from the purified water supply unit 4. When the determining unit 32 determines that the concentration of the predetermined pollutant contained in the air on the road 1 does not exceed the set threshold, the determining unit 32 controls the valve 33, closes the valve,
The spraying of the purified water on the road 1 from the purified water supply unit is stopped.

The drainage recovery tank 35 recovers purified water (used purified water) as drainage flowing into the drains 2-1 and 2-2. Since the valve 36 is normally closed, the purified water stored in the wastewater recovery tank 35 flows out to the pipe 54.

The water quality judging section 37 inspects the quality of the purified water flowing into the pipe 54 and determines whether or not the purified water stored in the waste water recovery tank 35 has a predetermined quality (purification action). judge. In general, the purified water once sprayed and recovered from the purified water supply unit 4 has its purification effect attenuated as compared with unused purified water. It is determined whether or not the purified water has a predetermined purification action.

When the water quality determination section 37 determines that the purified water stored in the waste water recovery tank 35 has a predetermined purification action, the water quality determination section 37 removes the purified water stored in the waste water recovery tank 35. The purified water switching unit 38 is controlled so that it can be reused and sprayed from the purified water supply unit 4. That is, based on the control from the water quality determination unit 37, the purified water switching unit 38 determines whether the purified water discharged to the pipe 52 has been supplied from the wastewater collection tank 35 via the pipe 54, or The valve provided is switched to select whether or not to be supplied from 39 through the pipe 53.

On the other hand, when the water quality judging section 37 judges that the purified water collected by the waste water collecting tank 35 does not have a predetermined purifying action, the valve 36 is opened and stored in the waste water collecting tank 35. The discharged purified water is discharged to a sewer (not shown) and discarded.

The water source 39 draws water from a water pipe (not shown) or the like and supplies the water to the pipe 53. The lime supply unit 40 releases lime (calcium hydroxide) at a predetermined timing by mixing with the water supplied from the water source unit 39 to the pipe 53 so that purified water having a predetermined concentration is generated. I do.

That is, the generated purified water is alkaline and is neutralized (a kind of purification) with nitrogen oxides and the like contained in the atmosphere.

The substance contained in the purified water to be sprayed is not limited to lime, but may be any substance as long as alkaline purified water is generated by mixing with water. Further, the purified water to be sprayed may be the water that does not contain any mixture and is drawn in by the water source unit 39.

Next, referring to the flowchart of FIG.
The air purification process of the purification device shown in FIGS. 1 and 3 will be described.

In step S1, the density detector 31
Is based on the output from the measuring device 3-1,
Of the contaminants existing on the optical path (on the road 1) of the light emitted from. The concentration detecting unit 31 analyzes, for example, the wavelength of the light received by the light receiving unit 12 and the intensity of the light,
The concentration of contaminants is detected from the amount of light absorbed by the substances present in the atmosphere. In other words, the lower the intensity of light having a wavelength corresponding to a contaminant such as nitrogen oxide, the higher the concentration of the contaminant.

The concentration detector 31 outputs information on the detected concentration of the pollutant to the determiner 32.

In step S2, the determination section 32 determines whether or not the concentration of the contaminants existing on the road 1 exceeds a predetermined threshold value. That is, the determination unit 32
, Threshold concentration information is set in advance for each contaminant such as nitrogen oxide or sulfide oxide.

If the determining unit 32 determines that the concentration of the contaminants existing on the road 1 does not exceed the predetermined threshold, the process returns to step S1 and repeats the subsequent processes. On the other hand, when the determination unit 32 determines that the concentration of the contaminant exceeds the threshold, the process proceeds to step S3.

In step S3, the display control unit 34
Based on the control from the determination unit 32, the warning information that warns the driver of the vehicle traveling on the road 1 to start spraying the purified water is displayed on the display devices 5-1 and 5-2. indicate. Thereby, for example, a message such as "Spray purified water. Be careful of driving" is displayed on the display devices 5-1 and 5-2.

By displaying such a message on the display device 5, the driver can confirm in advance that the purified water is sprayed. Accordingly, it is possible to suppress a driving error or the like caused by suddenly blocking the view.

In step S 4, the judgment unit 32 opens the valve 33 and sprays purified water from the purified water supply unit 4 onto the road 1. That is, during normal times (when the concentration of the pollutant does not exist above the threshold), the valve 33 is closed, and when the valve 33 is opened, the purified water supplied through the pipe 52 is released. The water flows into the pipe 51 and is sprayed on the road 1 from the purified water supply unit 4.

Further, the judging section 32 can adjust the degree of opening the valve 33 according to the detected concentration, and can control the amount of purified water to be sprayed.

The purified water supplied through the pipe 52 is sprayed and recovered by the processing of a flowchart shown in FIG. 5 to be described later, and the purified water generated from the newly drawn water. One of the waters is selected.

Further, by measuring the concentration of the pollutant discharged from the vehicle 21 for each vehicle 21 traveling on the road 1, the spraying of the purified water is controlled in accordance with the amount of the pollutant discharged from the vehicle 21. You may do it. This makes it possible to supply purified water in accordance with the amount of the pollutant by spraying the purified water to the vehicle that emits a large amount of the pollutant. Further, by supplying purified water to a vehicle that emits a large amount of pollutants, it is possible to notify the driver of the vehicle that the amount of the pollutant emitted is large.

By spraying purified water in this way,
Air pollution by exhaust gas can be minimized. Also, to measure the concentration of pollutants on the road 1, and when the value is higher than a predetermined threshold, to spray purified water,
Compared to the case where the purified water is constantly sprayed, the amount of the purified water to be used can be suppressed.

Next, referring to the flowchart of FIG.
The purified water selection process of the purification device will be described.

In step S11, the water quality judgment section 37
Measures (examines) the quality of purified water flowing through the pipe 54 (purified water collected by the wastewater recovery tank 35). Then, in step S12, the water quality determination unit 37 determines whether or not the purified water inspected in step S11 has a predetermined water quality.

As described above, the purified water to be sprayed includes:
Contains lime (calcium hydroxide) and is sprayed,
By neutralizing hydroxide ions contained in calcium hydroxide with oxygen ions contained in nitrogen oxides which are pollutants, the concentration of calcium hydroxide decreases. That is, since the purification action is attenuated by repeatedly using the purified water, the water quality determination unit 37 determines in step S12 that the purified water collected in the wastewater collection tank 35 has a predetermined purification action. Whether or not
Determination is made by measuring the concentration of calcium hydroxide contained in the purified water.

In step S12, the water quality judgment unit 37
If it is determined that the purified water stored in the wastewater recovery tank 35 has a predetermined water quality, the process proceeds to step S13.
Then, the purified water switching unit 38 is controlled, and the purified water supplied from the pipe 54 is set as the purified water for spraying. That is, FIG.
When a pollutant having a concentration equal to or higher than a predetermined threshold is detected by the processing of the flowchart shown in FIG.
The purified water stored in 5 is reused and sprayed.

On the other hand, in step S12, when the water quality determination unit 37 determines that the purified water collected in the wastewater recovery tank 35 does not maintain the predetermined water quality, the process proceeds to step S14, and the valve 36 is opened. And the wastewater collection tank 3
Release the purified water stored in 5 and discard.

Then, the water quality judging section 37 proceeds to step S1.
In 5, the purified water switching unit 38 is controlled, and the unused purified water supplied from the pipe 53 is used as the purified water for spraying.

As described above, the waste water can be suppressed by repeatedly reusing the purified water used once as long as the usable quality is maintained.

In the example described above, the density detector 31
Although the concentration of the pollutant on the road 1 is determined based on the intensity of light of a specific wavelength absorbed by the pollutant, it is determined simply based on the attenuation of the emitted light. Is also good.

Since this determination method is a method of measuring the concentration of a substance existing in the atmosphere based on the attenuation factor of transmitted light, the light emitted from the light projecting unit 11 is received by the light receiving unit 12. It is preferable that the distance of the optical path before the light is long. That is, when the distance of the optical path between the light projecting unit 11 and the light receiving unit 12 is short, the amount of light to be attenuated is very small, so that measurement in a low concentration range cannot be performed.

FIG. 6 is a diagram showing an example of the arrangement of the measuring device 3-1 in which the light projecting unit 11 and the light receiving unit 12 are installed, and the measuring device 3-2 in which the reflecting unit 13 is installed. In this figure, for convenience of explanation, the purified water supply unit 4,
The components such as the display device 5 and the like are omitted.

As shown in the figure, in this example, the measuring device 3-1 is arranged such that the optical path of the light emitted from the light projecting section 11 (indicated by a dotted line in the figure) crosses the road 1 diagonally. And a measuring device 3-2. Therefore, for example, as shown in FIG. 1, the optical path can be made longer as compared with a case where each measuring device is arranged so that the optical path crosses the direction of the road 1 almost perpendicularly. That is, the attenuation of the emitted light can be increased, and even if the concentration of the substance existing in the atmosphere is low, the concentration can be measured more accurately.

FIG. 7 shows the measuring device 3-1 and the measuring device 3-2.
It is a figure showing the example of other arrangement of.

In this example, lane 1-1 and lane 1
2, a median strip 1-3 is provided, and both of the measuring devices 3-1 and 3-2 are provided with the median strip 1--3.
3 above.

Therefore, similar to the arrangement example of FIG. 6 described above,
The optical path can be made longer as compared with the case where each measuring device is arranged so that the optical path crosses the light path substantially perpendicularly to the longitudinal direction of the road 1.

When the road 1 is on a curve and the measuring device 3 is installed in the median strip, each device can be arranged as shown in FIG.

In the arrangement example shown in FIG. 8, a measuring device 3-1 provided with a light projecting portion 11, a measuring device 3-2 provided with a reflecting portion 13, and a measuring device provided with a light receiving portion 12 are provided. The devices 3-3 are arranged in the median strip 1-3, respectively.

When the devices are arranged as described above, the light emitted from the light projecting section 11 is reflected by the reflecting section 1 as shown by the dotted line.
The light is reflected by 3 and received by the light receiving unit 12. The information on the amount of light received by the light receiving unit 12 is transmitted to the measuring device 3
-3 is connected to the concentration detector 31 (FIG. 3), and the concentration of the substance present in the atmosphere is measured from the attenuation.

As described above, the measuring device 3 can be arranged at various positions.

FIG. 9 is a perspective view showing an example of the configuration of another purification device to which the present invention is applied. Components corresponding to those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted as appropriate.

In the example shown in FIG. 9, the measuring device 3A-1,
And 3A-2, and measuring devices 3B-1 and 3B
-2 is installed, information about light emitted from the light projecting unit 11-1 installed in the measuring device 3A-1 and received by the light receiving unit 12-1 and installed in the measuring device 3B-1. Emitted from the light emitting unit 11-2
The information about the light received at -2 is a speed calculation unit 61,
And output to the density detector 62.

When a pollutant having a concentration higher than a predetermined threshold is detected by the concentration detector 62, the purified water supply is performed according to the average speed of the vehicle traveling on the road 1 calculated by the speed calculator 61. The method of spraying the purified water (the spray nozzle to be used) in the units 4-1 and 4-2 is controlled.

For example, when the average speed of the vehicle traveling on the road 1 is less than 30 km, even if the purified water is sprayed on the surface of the road 1, the amount of the purified water wound up by the vehicle is very small. I can not expect much. Therefore, when the average speed of the traveling vehicle is low, the spraying control unit 63 (FIG. 10) described later switches the spray nozzle of the purified water supply unit 4 to make the purified water into a mist and onto the road 1. Spray.

Thus, for example, even if traffic congestion occurs on the road 1 and the flow is poor, it is possible to remove pollutants.

FIG. 10 is a block diagram showing a configuration example of a purification device installed near the road 1 in FIG. 10, parts corresponding to those in FIG. 3 are denoted by the same reference numerals.

The speed calculating section 61 calculates the average speed of the vehicle traveling on the road 1 based on the outputs from the measuring devices 3A-1 and 3B-1. Light emitting units 11-1 and 1
The light emitted from 1-2 is blocked by the vehicle body when a vehicle exists on the optical path, and the light is received by the light receiving unit 12-1 or 12-1.
The amount of light received at -2 decreases. Then, the speed calculation unit 61 determines whether the measuring devices 3A-1 and 3B-1
Then, the speed of each vehicle is measured from the interval of and the timing at which the emitted light is blocked, and the average speed of each predetermined time or every predetermined number of vehicles is calculated.

The concentration detector 62 analyzes the intensity of the absorbed light in the emitted light and measures the concentration of the contaminant, similarly to the concentration detector 31 shown in FIG. The concentration detector 62 can measure the concentration based on the output from the measuring device 3A-1 and the measuring device 3B-1, and therefore, measures the concentration based only on the output from the measuring device 3-1. Compared to the case of the concentration detector 31 in FIG. 3, a more accurate concentration of the contaminant can be measured over a wide range.

Note that the concentration detector 62 may measure the concentration of a substance present in the atmosphere from the amount of attenuation of the emitted light, as described with reference to FIG. In that case, the measuring devices 3A-1 to 3B-2 respectively correspond to FIG.
As described with reference to FIGS. 8 to 8, they can be arranged at various positions.

When the sprinkling control section 63 determines that a contaminant having a predetermined threshold value or more is present based on the output from the concentration detecting section 62, the sprinkling control section 63 calculates the average speed of the vehicle calculated by the speed calculating section 61. The spraying method of the purified water supply unit 4 is controlled (switched).

Next, the air purification process of the purification device shown in FIGS. 9 and 10 will be described with reference to the flowchart of FIG.

In step S31, the density detector 62
Measures the concentration of pollutants contained in the air on the road 1 based on the outputs from the measuring devices 3A-1 and 3B-1. For example, the concentration detection unit 62 determines the concentration of the contaminant existing on the optical path of the light emitted from the measuring device 3A-1 and the concentration of the contaminant existing on the optical path of the light emitted from the measuring device 3B-1. Are measured from the change in the spectrum or the amount of attenuation as described above, and the average value is calculated.

In step S32, the spraying control section 63 determines whether or not the concentration of the contaminant measured in step S31 exceeds a predetermined threshold based on the output from the concentration detecting section 62. If it is determined that the time has not exceeded, the process returns to step S31, and the subsequent processes are repeatedly executed.

On the other hand, in step S32, when the spraying control unit 63 determines that the concentration of the contaminant detected in step S31 exceeds a predetermined threshold value, the process proceeds to step S33.

In step S33, the speed calculating section 61
Calculates the average speed of the vehicle traveling on the road 1. The speed calculation unit 61 measures a time difference between the timing when the light emitted from the light emitting unit 11-1 is blocked by the vehicle and the timing when the light emitted from the light emitting unit 11-2 is blocked by the vehicle. Time difference, measuring device 3A-1 and measuring device 3B-
From one interval, the speed of each individual vehicle is measured. And
The speed calculation unit 61 calculates an average speed of a vehicle that has traveled within a predetermined time such as one hour, for example.

At step S34, the display control section 34
Displays on the display devices 5-1 and 5-2 warning information that warns the driver of the vehicle to spray purified water. The warning information displayed on the display devices 5-1 and 5-2 is, for example, a message such as "spray purified water. Be careful of driving" as described above.

[0128] Then, the spraying control section 63 executes step S3.
In 5, the spray nozzle to be used is switched according to the speed calculated by the speed calculation unit 61 to spray purified water. For example, when the average speed calculated in step S33 is a low speed such as 30 km, the spraying control unit 63 selects a spray nozzle that sprays purified water in the form of a mist. Select a spray nozzle that sprays purified water so that it is spread over the surface.

As described above, by switching the spraying method according to the average speed of the vehicle, the purified water can be sprayed by a more effective spraying method.

Further, the amount of sprayed purified water may be controlled in accordance with the average speed of the vehicle, or the presence or absence of sprayed purified water may be controlled.

In the examples shown in FIGS. 9 and 10, the average speed of the vehicle is measured by itself. However, the average speed may be obtained based on a notification from a management center or the like which manages traffic on the road 1. . In addition, two measuring devices 3A-
1, 3B-1 and the measuring devices 3A-1, 3B-
Although the speed of the vehicle is measured based on the interval 1, the speed may be obtained by installing a speed sensor using an ultrasonic wave or light.

FIG. 12 is a perspective view showing a configuration example of a purifying apparatus to which the present invention is applied.

In FIG. 12, instead of the purified water supply sections 4-1 and 4-2 shown in FIG. 1, the support members 71A and 71B are supported across the road 1 by
A gantry 71 is provided. Then, purified water is sprayed in a curtain shape from a spray port provided at a predetermined interval in the gantry 71.

In FIG. 12, a purifying device having the same configuration as that shown in FIG. 3 is provided in the nearby ground, etc., and purified water is sprayed by the same processing as in the flowcharts of FIGS. 4 and 5. You. That is, the determination unit 32 determines whether or not the concentration of the contaminant detected by the concentration detection unit 31 is higher than a threshold value. When it is determined that the concentration is higher than the threshold value, the valve 33 is opened and purified water is supplied to the pipe 51. Supply. The purified water supplied to the pipe 51 flows into the inside of the support member 71A, is supplied to the gantry 71, and is sprayed from the spray port.

As described above, the purified water can be sprayed by various methods (configurations).

FIG. 13 is a perspective view showing a configuration example of another purifying apparatus to which the present invention is applied.

In FIG. 13, purified water supply units 81 to 86 for supplying (flowing) purified water to the surface of the road 1 are installed in the central separation zone 1-3. Purified water supply units 81 to 8
6 are provided with supply ports 81-1 to 86-1 for flowing purified water to the lane 1-1 side and supply ports 81-2 to 86-2 for flowing purified water to the lane 1-2 side, respectively. I have.

FIG. 14 is a diagram showing a cross section of the road 1 shown in FIG.

As shown in FIG. 14, the purified water supply unit 81-
The purified water supplied from 1 crosses the lane 1-1 and flows out to the drain 2-1. The purified water supplied from the purified water supply section 81-2 crosses the lane 1-2 and drains. It flows out into the groove 2-2.

FIG. 15 is a view of the road 1 shown in FIG. 13 as viewed from above.

As shown in FIG. 15, each supply port is formed so that purified water supplied from the purified water supply units 81 to 86 onto the road 1 gradually spreads to a predetermined width and flows.

As shown in FIGS. 13 to 15, the flow of purified water directly on the surface of the road 1 obstructs the driver's view as compared with the case where purified water is sprayed from above as described above. Can be suppressed.

Further, as shown in FIG. 16, the supply section of purified water can be installed at a predetermined height. The height of the purified water supply unit 101 in FIG.
The height is almost the same as 1A (less than 1 m).

By supplying (squirting) mist-like purified water from the purified water supply unit 101, the exhaust gas discharged from the exhaust port 21A can be directly covered with the purified water.
Nitrogen oxides and the like contained in the exhaust gas and calcium hydroxide in the purified water can be more effectively neutralized.

In each of the above-described examples, the road 1
Although it was assumed that the concentration of pollutants contained in the above air was measured, it is normal for nearby residents to suffer from air pollution due to exhaust gas. Alternatively, the concentration of the contaminant may be measured and removed.

FIG. 17 is a diagram showing an example of a place where the concentration of a pollutant is measured.

As shown in FIG.
When there are 11-1 and 111-2, the area between the residential area and the road 1 is set as the measurement area. It is the residents near Road 1 that are affected by air pollution. Therefore, by measuring the concentration of pollutants in the air near residential areas, roads 1 can be adjusted according to the degree to which residents are affected.
Pollutants can be purified. For example, the concentration of the contaminant is measured in the measurement area 112-1, and when it is determined that the measured concentration exceeds a predetermined threshold, the purified water is sprayed by the above-described various methods, so that the residential area 111- The influence of pollutants on one inhabitant can be suppressed.

FIG. 18 shows the measurement area 111-1 in FIG.
FIG. 3 is a perspective view showing a configuration example of a purification device to which the present invention is applied when measuring the concentration of a contaminant in Examples and 111-2.

In FIG. 18, the measuring device 3A for measuring the concentration of the contaminant in the measuring area 112-1 shown in FIG.
-1 and 3A-2, and measuring devices 3B-1 and 3B-2 for measuring the concentration of contaminants in the measurement area 112-2.

FIG. 3 shows information on the light received by the light receiving unit 12-1 provided in the measuring device 3A-1 and the light receiving unit 12-2 provided in the measuring device 3B-1. The concentration is output to the concentration detector 31 and the concentration of the contaminant in each measurement area is detected.

Note that the other configuration shown in FIG. 18 is the same as that shown in FIG. 1, and a description thereof will be omitted.

The residential area 111 as shown in FIG.
It is also possible to provide a purified water supply section along the longitudinal direction of the road 1 so that the pollutants do not affect -1 and 111-2.

FIG. 19 is a perspective view showing a configuration example of another purifying apparatus to which the present invention is applied. In the example of FIG.
The measuring devices 3-1 and 3-2 are installed in a direction crossing the road 1, as shown in FIG.

The gantry 121-1 includes a support member 121.
A-1 and 121B-1 are provided on the shoulder of the lane 1-1 along the longitudinal direction of the road 1. Further, in the gantry 121-1, similarly to the gantry 71 shown in FIG. 12, spray ports for purified water are provided at predetermined intervals. Gantry 121-
A gantry 121-2 is installed at a position facing 1 and, like the gantry 121-1, sprays supplied purified water in a curtain shape. Gantry 1
Purified water is supplied to the tube 21-1 from the tube 51-1 and purified water is supplied to the gantry 121-2 from the tube 51-2.

The wind direction measuring device 122 measures the wind direction and the wind speed, and outputs the measured information to the judgment section 32.

In the example of FIG. 19, purified water is sprayed according to the wind direction so that the contaminants do not affect the residential areas 111-1 and 111-2. For example, in FIG. 19, when the wind is blowing in the direction indicated by the arrow, the influence of the contaminants existing near the road 1 affects the residents of the residential area 111-1 on the lee side. 1 and the purified water is sprayed, so that the influence of the pollutants does not reach the residents of the downtown residential area 111-1.

FIG. 20 is a block diagram showing a configuration example of a purification device installed near the road 1 shown in FIG.

The concentration detector 31 measures the concentration of pollutants contained in the air on the road 1 based on the output from the measuring device 3-1 and outputs the measurement result to the determination unit 32. .

When the judging section 32 judges that a contaminant having a predetermined threshold value or more exists near the road 1 based on the output from the concentration detecting section 31, the judgment is made by the wind direction measuring device 122 and notified. Switching unit 131 according to wind direction
Control. For example, the determination unit 32 determines that the residential area 1 in FIG.
When it is notified that the wind is blowing from 11-2 in the direction of the residential area 111-1 (from left to right in FIG. 17), the purified water is sprayed from the gantry 121-1 (purified water). Is supplied to the tube 51-1).
31 is controlled.

On the other hand, the judging section 32 determines whether the residential area 11 shown in FIG.
When it is notified that the wind is blowing from 1-1 to the residential area 111-2 (from right to left in FIG. 17),
The switching unit 13 so that the purified water is sprayed from the gantry 121-2 (so that the purified water is supplied to the pipe 51-2).
Control 1

The determining unit 32 controls the degree of opening of the valve 33 and determines the amount of purified water sprayed from the gantry 121-1 or 121-2 according to the wind speed notified from the wind direction measuring device 122. Adjust.

Next, the air purification process of the purification device shown in FIGS. 19 and 20 will be described with reference to the flowchart in FIG.

Steps S51 and S52 are the same as steps S1 and S2 in FIG.
The processing is the same as the processing in steps S31 and S32 in FIG. That is, the concentration detecting unit 31 measures the concentration of the contaminant present on the optical path of the light emitted from the light projecting unit 11 based on the output from the measuring device 3-1 in FIG. If it is determined in step S52 that the density is equal to or higher than the predetermined threshold, the process proceeds to step S53.

In step S53, the judgment section 32
Based on the output from the wind direction measuring device 122, it is determined whether the wind speed measured by the wind direction measuring device 122 exceeds a predetermined threshold wind speed, and if it is determined that the wind speed is not exceeded, the process returns to step S51, The subsequent processing is repeatedly executed. That is, in the processing of the flowchart shown in FIG. 21, only when a predetermined wind speed is measured,
Purified water is sprayed.

On the other hand, if the determination section 32 determines in step S53 that a wind speed equal to or greater than the predetermined threshold value has been measured, the process proceeds to step S54, and controls the switching section 131 in accordance with the wind direction notified from the wind direction measurement device 122. I do.

For example, the judging section 32 determines that the residential area 1 shown in FIG.
When the wind direction measurement device 122 notifies that the wind is blowing from 11-2 in the direction of the residential area 111-1, the switching unit 131 is controlled so that purified water is sprayed from the gantry 121-1 on the leeward side. , So that purified water is supplied to the pipe 51-1.

On the other hand, the judging section 32 determines whether the residential area 11 shown in FIG.
When the wind direction measuring device 122 notifies that the wind is blowing in the direction of the residential area 111-2 from 1-1, the switching unit 131 is controlled so that purified water is sprayed from the gantry 121-2 on the leeward side. , So that purified water is supplied to the pipe 51-2.

In step S55, the determination section 32 controls the degree of opening of the valve 33 according to the wind speed notified from the wind direction measuring device 122, so that purified water is sprayed from the gantry selected in step S54. To
That is, the determination unit 32 holds a correspondence table of the wind speed and the amount of purified water passing through the valve 33, and distributes the flow rate corresponding to the notified wind speed from the gantry.
Control the valve 33.

As described above, according to the wind direction and its strength,
By controlling the gantry that sprays purified water and the amount of purified water that is sprayed, it saves resources and reduces the impact of air pollution on residents living in areas susceptible to air pollution. It is possible to more reliably suppress the spread.

FIG. 22 is a diagram showing an example of the arrangement of each device when a purification device to which the present invention is applied is installed in a tunnel 141.

The purified water supply unit 142 installed on the ceiling of the tunnel 141 includes, for example, a fire spray nozzle for spraying a fire extinguishing liquid when a fire occurs in the tunnel 141, and a purification spray nozzle for purifying pollutants. A spray nozzle is provided, and the nozzle to be used is appropriately switched.

In the purifying device installed in the tunnel 141, the concentration of the contaminants in the tunnel 141 is detected by the concentration detecting section 31 in the same manner as in the processing in the flowchart of FIG. Then, when a concentration equal to or higher than the predetermined threshold is detected, a spray nozzle for air purification is selected in the purified water supply unit 142, and the purified water is sprayed.

FIG. 23 and FIG.
It is a figure which shows the example of arrangement | positioning of the purified water supply part installed in the inside.
FIG. 23 and FIG. 24 are views of the tunnel 141 as viewed from above.
The traveling direction of the lane 1-2 is upward, and the traveling direction of the lane 1-2 is upward. The purified water sprayed from each purified water supply unit is indicated by a dotted arrow, and the amount of the arrow indicates the amount of the purified water.

In FIG. 23, purified water supply units 151 to 156 for spraying purified water above lane 1-1 in tunnel 141, and purified water supply units 171 to 171 for spraying purified water above lane 1-2. 176 are provided, and are arranged so that the installation density gradually increases in each traveling direction.

For example, in the purified water supply units 151 to 156, the interval between the purified water supply units 151 and 152, the interval between the purified water supply units 152 and 153, and the purified water supply units 153 and 1
The interval of 54, the interval between the purified water supply units 154 and 155, and the interval between the purified water supply units 155 and 156 are arranged so as to be sequentially narrowed.

Referring to FIG. 24, purified water supply units 151 to 154 for spraying purified water are provided above the lane 1-1 in the tunnel 141, and a purified water supply unit for spraying the purified water above the lane 1-2. 171 to 174 are provided at equal intervals. And as shown by the dotted line in the figure, the amount of water sprayed from each purified water supply unit is configured to gradually increase in the traveling direction.

For example, in the purified water supply units 151 to 154, the amount of purified water sprayed from the purified water supply unit 151 is indicated by one dotted line arrow.
The amount of purified water sprayed from No. 2 is indicated by two dotted arrows. The amount of purified water sprayed from the purified water supply unit 153 is indicated by three dotted arrows, and the amount of purified water sprayed from the purified water supply unit 154 is indicated by four dotted arrows. I have.

When the driver enters the tunnel 141, the driver's vision suddenly becomes dull. Therefore, as shown in FIGS. 23 and 24, the density or the amount of the purified water to be sprayed is gradually increased to increase the sharpness. It is possible to suppress a driver's driving mistake or the like due to spraying of purified water.

The various devices described above can be configured by combining them. For example, tunnel 1
In the inside of 41, the purified water supply unit is not provided on the ceiling, but the purified water supply units 81 to 86 as shown in FIG.
May be provided in the median strip 1-3, or the purified water supply unit 1 having a predetermined height as shown in FIG.
01 may be provided. The median strip 1-
3 and a purified water supply unit 142 provided on the ceiling.

Further, the purified water supply units 4 shown on a general road such as that shown in FIG. 1 may be arranged at intervals as shown in FIG.
The control may be performed as shown in FIG.

[0181]

According to the present invention, air pollution caused by exhaust gas and the like can be more effectively suppressed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration example of a purification device to which the present invention is applied.

FIG. 2 is a diagram illustrating an example of a spray nozzle installed in a purified water supply unit in FIG. 1;

FIG. 3 is a block diagram illustrating a configuration example of the purification device of FIG. 1;

FIG. 4 is a flowchart illustrating a process of the purification device of FIG. 1;

FIG. 5 is a flowchart illustrating another process of the purification device in FIG. 1;

FIG. 6 is a diagram showing an example of the arrangement of the measuring device in FIG. 1;

FIG. 7 is a diagram showing another arrangement example of the measuring device of FIG. 1;

FIG. 8 is a diagram showing still another arrangement example of the measuring device of FIG. 1;

FIG. 9 is a perspective view showing a configuration example of another purification device to which the present invention is applied.

FIG. 10 is a block diagram illustrating a configuration example of the purification device of FIG. 9;

FIG. 11 is a flowchart illustrating a process of the purification device in FIG. 9;

FIG. 12 is a perspective view showing a configuration example of still another purification device to which the present invention is applied.

FIG. 13 is a perspective view showing a configuration example of a purification device to which the present invention is applied.

14 is a diagram showing a cross section of the purification device of FIG.

FIG. 15 is a view of the purification device of FIG. 13 as viewed from above.

FIG. 16 is a diagram showing a configuration example of another purification device to which the present invention is applied.

FIG. 17 is a diagram illustrating an example of a measurement area.

FIG. 18 is a perspective view showing a configuration example of still another purification device to which the present invention is applied.

FIG. 19 is a perspective view showing a configuration example of a purification device to which the present invention is applied.

20 is a block diagram illustrating a configuration example of the purification device in FIG. 19;

FIG. 21 is a flowchart illustrating a process of the purification device in FIG. 19;

FIG. 22 is a diagram showing a configuration example of a purification device to which the present invention is applied.

FIG. 23 is a view of the purification device of FIG. 22 as viewed from above.

FIG. 24 is another view of the purification device of FIG. 22 as viewed from above.

[Explanation of symbols]

 2-1 and 2-2 Drain 3-1 and 3-2 Measuring device 4-1 and 4-2 Purified water supply unit 5-1 and 5-2 Display device 11 Light emitting unit 12 Light receiving unit 13 Reflecting unit 31 Concentration Detecting unit 32 Judging unit 34 Display control unit 35 Drainage recovery tank 37 Water quality judging unit 61 Speed calculating unit 62 Concentration detecting unit 63 Spray control unit 71 Gantry 81 to 86 Purified water supply unit 101 Purified water supply units 121-1 and 121-2 Gantry 142 Purified water supply unit 151 to 156 Purified water supply unit 171 to 176 Purified water supply unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B01D 53/70 B01D 53/34 135A 53/72 120E 53/77 134F ZAB 125A G01N 21/27 125K // B01D 53/30 (72) Inventor Sakamoto Sumao 801 Shimogyo-ku, Shimogyo-ku, Higashi-iri, Minamifudo-cho, Shimogyo-ku, Kyoto F-term (reference) 2D026 BB01 2G059 AA01 BB01 CC04 CC05 CC19 EE01 EE12 GG00 JJ01 JJ13 KK01 MM01 PP04 4D002 AA02 AA12 AA21 AA33 AC10 BA02 CA01 DA05 DA12 DA35 GA02 GB05 HA01

Claims (22)

[Claims] A measuring means for measuring an amount of a predetermined substance present in the atmosphere; a determining means for determining whether or not the amount of the substance measured by the measuring means exceeds a predetermined threshold; A purifying apparatus, comprising: purified water supply means for supplying purified water absorbing the substance onto a road, when the determining means determines that the amount of the substance exceeds the threshold value. 2. The purification apparatus according to claim 1, wherein the measuring unit measures the amount of the substance based on the intensity of light having a specific wavelength absorbed by the substance. 3. The purification apparatus according to claim 1, wherein the measuring unit emits the light so as to cross the road diagonally, and measures the amount of the substance. 4. The apparatus according to claim 1, wherein said measuring means measures an amount of said substance at a shoulder of said road.
The purification device according to any one of 2 and 3. 5. The purification device according to claim 1, wherein the measuring unit measures the amount of the substance at a median strip of the road. 6. The purification apparatus according to claim 1, wherein the purified water supply unit atomizes the purified water and sprays the purified water into the air. 7. The purification device according to claim 6, wherein the purified water supply means sprays the purified water from a height corresponding to an exhaust port of a running vehicle. 8. The purification device according to claim 1, wherein the purified water supply means causes the purified water to flow on a road. 9. The purification device according to claim 1, wherein the purified water supply means is installed at a position crossing a road, and sprays the purified water in a curtain shape. 10. The purified water supply means, which is provided in a tunnel and sprays a fire extinguishing liquid or sprays the purified water. Purification device according to any one of the above. 11. A vehicle according to claim 11, further comprising speed measuring means for measuring an average speed of the traveling vehicle, wherein said purified water supply means sprays said purified water based on said average speed measured by said speed measuring means. The purification device according to any one of claims 1 to 10, wherein the purified water is sprayed in a mist state. 12. The apparatus according to claim 1, wherein the purified water supply unit controls the amount of the purified water according to the amount of the substance measured by the measuring unit. Purification equipment. 13. The purification apparatus according to claim 1, wherein the purified water supply means is installed so that an installation density is sequentially increased in a traveling direction of the vehicle. 14. The purified water supply means according to claim 1, wherein the purified water supply means supplies the purified water such that a supply amount of the purified water increases sequentially along a traveling direction of the vehicle. Purification device according to any one of the above. 15. The purification apparatus according to claim 1, wherein the purified water supplied by the purified water supply means is alkaline. 16. The purified water supply means is provided on both sides of the road, a wind direction detecting means for detecting a wind direction, and a case in which the determination means determines that the amount of the substance exceeds the threshold value. 16. The apparatus according to claim 1, further comprising a selection unit that selects the purified water supply unit that supplies the purified water according to the wind direction detected by the wind direction detection unit. Purification equipment. 17. The purification device according to claim 1, further comprising a display device that displays warning information before the supply of the purified water is started by the purified water supply device. apparatus. 18. A recovery unit for recovering the purified water supplied by the purified water supply unit, an inspection unit for inspecting a quality of the purified water recovered by the recovery unit, and an inspection unit for inspecting the quality of the purified water. Quality control means for determining whether or not the quality of the purified water holds a predetermined quality, wherein the purified water supply means maintains the predetermined quality of the purified water by the quality determination means. 18. The purifying apparatus according to claim 1, wherein when it is determined that the purifying water is used, the purified water collected by the collecting unit is reused. 19. A disposal means for discarding the purified water recovered by the recovery means when the quality determination means determines that the quality of the purified water does not maintain the predetermined quality. 2. The method according to claim 1, wherein
9. The purification device according to 8. 20. The purifying apparatus according to claim 1, wherein the purified water supply unit is provided downstream of the measuring unit with respect to a traveling direction of the vehicle on the road. 21. A speed measuring means for measuring a speed of a vehicle traveling on a road; and purifying water for purifying exhaust gas discharged from the vehicle according to the speed of the vehicle measured by the speed measuring means. A purification device comprising: purified water supply means for supplying to a road. 22. A measuring step of measuring an amount of a predetermined substance present in the atmosphere, and determining whether or not the amount of the substance measured by the processing of the measuring step exceeds a predetermined threshold. And a purified water supply step of supplying purified water absorbing the substance onto a road when it is determined that the amount of the substance exceeds the threshold by the processing of the determining step. And purification method.