JPH0335165A - Water quality monitor system for water area and its intake system - Google Patents

Abstract

PURPOSE:To monitor the water quality of the water source in a wide water area and to take in water by providing water quality monitor devices at plural positions of the water source also providing a monitor center which receives signals from the water quality monitor devices in a purification plant and monitoring the water quality. CONSTITUTION:The water quality monitor system is equipped with the water quality monitor devices (image monitor device) 1 which recognize the behavior of fishes in images to decide whether the water quality is normal or abnormal and the purification plant 2 which purifies supplied raw water and the water quality of the water source is monitored. Then the water quality monitor devices 1 are provided at plural positions of the water source and the monitor center 4 which receives the signals 3 from the monitor devices 1 is provided in the purification plant 2 to monitor the water quality, Further, the monitor devices 1 are provided at intakes 5 installed at plural positions of the water source and the monitor center 4 which receives the signals 3 from the monitor devices 1 are provided in the purification plant 1 to monitor the water quality of the water area, thereby controlling the water intake from the water source according to the result. Consequently, the water quality can be monitored at the plural positions of the water source and the water can be taken in.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water quality monitoring system for a body of water and a water intake system thereof.

[Conventional technology]

At water treatment plants, in order to determine whether poisonous substances have been mixed into the raw water, some of the raw water is channeled into aquariums where aquatic animals such as crucian carp, carp, dace, tanager, haya, and oysterfish are raised. That is, when a poisonous substance is mixed into the raw water, the above-mentioned phenomenon in which fish behave abnormally or die is used to monitor the inflow of the poisonous substance into the raw water. Also,
Sewage treatment plants need to know whether legally prohibited toxic substances have entered the incoming sewage, and rely on intermittent manual water quality analysis. Similarly, it is necessary to monitor the presence of toxic substances in treated water from water treatment plants and sewage treatment plants, as well as river water.

Water temperature and turbidity #p) using industrial instruments to measure the quality of raw water
(l Electrical conductivity etc. are measured continuously.

However, detection of toxic substances mixed into 1M water relies on chemical analysis, but there are many types to be detected, and measurement is extremely difficult in terms of time and economy.

As described above, monitoring of toxic substances in water currently relies on human visual inspection and complicated manual analysis. For this reason, there was a drawback that continuous monitoring and early detection were not possible.

One way to monitor fish is to detect fish in an aquarium from the top of the tank using an industrial television camera (ITV) and process the image (Reference: 36th Gold National Waterworks Research Presentation, Lecture Collection P4)
64-466) have been devised. In this method, fish are illuminated from the top of the aquarium and images are similarly taken from the top. However, this method cannot detect the fish until they rise to the surface of the water, so it is difficult to detect the three abnormal fish behaviors at an early stage.

Japanese Unexamined Patent Publication No. 61-46294 discloses a method of monitoring behavioral patterns of a plurality of living things in order to monitor water quality. In the disclosed technology, it is stated that the temperature and water quality are measured using a water quality sensor and the normality or abnormality of the behavior pattern is determined based on the measured values.It is stated that the six behavior patterns include speed and position. There is. However, even if we simply analyze behavioral patterns using image technology, such ideas are well known, and how do we specifically detect or evaluate the speed and position of multiple living things? Since this is not disclosed, it is difficult to implement.

Furthermore, conventional monitoring methods do not consider what areas of inflow water should be monitored.

[Problem to be solved by the invention]

In the above-mentioned conventional technology, fish in a breeding tank are detected using an industrial camera, and when the fish float to the surface, it is determined that there is an abnormality, but it is unclear what kind of change is caused. Furthermore, water sources such as rivers are spread over a wide area, and there are problems in monitoring their water quality.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a water quality monitoring system for a water area and its water intake system, which makes it possible to monitor and take water from a water source in a wide area.

[Means for Solving Problem 31] The above objective is to monitor water quality by installing water quality monitoring devices at multiple locations in the water source and by installing a monitoring center that receives signals from the water quality monitoring devices at the water treatment plant. , achieved. In addition, water intakes are provided at multiple locations in the water source, water quality monitoring devices are provided at these intakes, and a monitoring center that receives signals from the water quality monitoring devices is provided at the water purification plant to monitor the water quality of the water area.

This is achieved by controlling water intake from water sources based on the monitoring results.

[Effect]

Since the above means is provided, it becomes possible to monitor the water quality and take water from a plurality of water sources, thereby making it possible to monitor the water quality and take water from a water source in a wide area.

〔Example〕

The present invention will be explained below based on the illustrated embodiments. FIG. 1 shows an embodiment of the invention. A water quality monitoring device (image monitoring device) 1 that performs image recognition of fish behavior to determine normal water quality or abnormal water quality.

Equipped with a water purification plant 2 that purifies the supplied raw water.

This is a water quality monitoring system for water areas that monitors the water quality of water sources. In this embodiment, water quality monitoring devices 1 are provided at multiple locations in the water source, and a monitoring center 4 that receives signals 3 from the water quality monitoring devices 1 is provided at the water purification plant 2. We decided to monitor the water quality. In addition, water intakes 5 are provided at multiple locations in the water source, and water quality monitoring devices are installed at these intakes 5! 1, and a monitoring center 4 that receives the signal 3 from the water quality monitoring device 1 is provided in the water purification plant 2 to monitor the water quality of the water area, and based on the monitoring results, water intake from the water source is controlled. By doing so, it becomes possible to monitor the water quality and take water at a plurality of locations in the water source, thereby providing a water quality monitoring system for a water area and its water intake system that makes it possible to monitor the water quality and take water from a water source in a wide area.

That is, the figure shows a wide-area water purification process in which raw water from rivers 6 and lakes 7 is introduced to purified water@2 to produce purified water. The configuration and operation will be explained next. First, raw water from the river 6 is sent from the intake port 5a to the water treatment plant 2 via the water pipe 8, where it undergoes normal treatment processes (sedimentation, chemical injection, filtration, disinfection, etc.) to meet water quality standards. Thus, purified water is obtained and sent to the supply source through the water pipe 9. Further, the raw water of the lake 7 is similarly sent to the water purification plant 2 from the water intake port 5b via the water conduit 1o, and purified water is obtained through a purification process.

Water quality monitoring devices (image monitoring devices) la and 1b for fish behavior are installed at the water intakes 5a and 5b, respectively. A water quality monitoring bag fR1c is also installed on the upstream side of the river 6. By monitoring with this water quality monitoring device 1a, it is possible to monitor the mixing of harmful substances upstream, but if the water area is spread over a wide area, by installing the water quality monitoring device 1c, it is possible to monitor in which water area harmful substances are mixed in. In other words, it can be determined whether the water quality is the water area between the water quality monitoring device 1c and the water quality monitoring bag fila or the upstream water area of the water quality monitoring device 1c. Signals 3a, 3b, 3c of the monitoring results from each water quality monitoring device 1c, la, and 1b are transmitted to the monitoring center 4 located in the water purification pipe 2 (as remote transmission, TM/TC (telemeter/
Water quality monitoring equipment
, lb, and lc can be used to monitor the water quality in a wide area of each water source in real time.0 For example, if abnormal water quality occurs due to contamination of harmful substances, etc., and you want to reduce or stop water intake at the water intake 5a, use the water intake 5b. In addition, if abnormal water quality is detected on the upstream side of the water quality monitoring bag'/Itlc, monitoring by the water quality monitoring device 1a on the downstream side can be adjusted to increase the amount of water taken from upstream. The water intake at the water intake 5a is stopped with sufficient time before the harmful substances reach the water treatment plant 2, and abnormal water quality is detected in the water conduit 8 leading to the water treatment plant 2. Do not add raw water. Then water quality monitoring equipment! 1 c *
At the stage when it is confirmed that the water quality has returned to normal by 1a, water intake at the water intake port 5a is restarted. If the water quality monitoring device 1b detects abnormal water quality, immediately
The water intake is stopped, and the raw water in the water conduit 10 leading to the water treatment plant 2 is discharged downstream of the river 6 from this side of the water treatment plant through the drain pipe 11a indicated by the dotted line in the figure so as not to enter the water treatment plant. Thereafter, when normal water quality is confirmed by the water quality monitoring device 1b, water intake at the water intake port 5b is resumed. However, to prevent the raw water from entering the water treatment plant 2 immediately after restarting, the drain pipe 11
The water is discharged into the river 6 by a, and then guided to the water treatment plant 2.

In addition, if the water quality monitoring device 11c detects normal water quality and the water quality monitoring device lla detects abnormal water quality, abnormal raw water enters the water pipe 8 from the water intake 5a;
a, and the raw water in the water pipe 8 is discharged from the front of the water treatment plant to the river 6 through the drain pipe 11b indicated by the dotted line in the figure.
Prevent abnormal raw water from entering the water treatment plant.

The water quality monitoring device 1 for fish behavior will be explained with reference to FIG.

Raw water from rivers and lakes is supplied to a water tank 14 by a water supply pipe 12 and a water supply pump 13.

The raw water introduced into the water tank 14 is drained through a drain pipe 15. Inside the water tank 14, there is a partition plate 16a such as a wire mesh or a perforated plate.
, 16b is provided, and fish 18a, 18b are raised here. In addition, although the figure shows the case where there are two fish 18a and 18b, the fish 18
Needless to say, the lighting device can also be applied in the same way when there are more a and 18b! 19 is fish 1 in the aquarium 14
A semitransparent plate 20 made of a semitransparent substance is provided between the lighting device 19 and the water tank 14. Lighting device 1
The semi-transparent plate 20 receives the light of 9, scatters the light, and illuminates the aquarium 14 with the light emitted from the entire semi-transparent plate 20! An imaging bag N21 such as an industrial television camera (ITV) is arranged on the opposite side of the water tank 14 when viewed from the camera 19. This imaging device F21 captures the light emitted from the illumination device 19 and passed through the semi-transparent plate 20, that is, the fish 18a and 18b in the rearing space 17.
Take an image.

Imaging bag! ! The signal 21 is guided to the water quality monitoring device 1. Water quality monitoring bag v! ! 1, first, captured images are captured at preset time intervals, image recognition is performed on the fish 18, and the center of gravity of the fish 18 (calculating position and speed) is calculated at intervals of 1 hour. The calculation results are sequentially calculated and stored in memory.

Based on this memory information, the behavior of the fish 18 is monitored by calculating the statistical pattern of the position and speed of the fish 18 during the preset measurement time T, and an alarm is issued in case of abnormality based on the monitoring results. emanate.

As explained above, the water quality monitoring devices lc and la shown in FIG.
The monitoring results at 1b are transmitted to the monitoring center 4 in the water purification plant 2. In this monitoring center 4, a monitor TV (not shown) receives signals 3 from each water quality monitoring device la, lb, and lc.
Display a, 3b, 3c. This makes it possible to monitor water quality and control water intake over a wide area.

As described above, according to this embodiment, by installing water quality monitoring devices at a plurality of locations in a water source to be treated and transmitting signals of monitoring results to a monitoring center, the monitoring center can monitor water quality in a wide area. By monitoring water quality in a wide area, it is possible to quickly discover the source of pollution in the event of an abnormality, take emergency measures such as taking treatment measures, stopping water intake, and even restarting water intake.

Water quality safety can be ensured to a high degree.

Note that an application has already been filed for a detailed explanation of the configuration and operation of the water quality monitoring device, a method for image recognition of fish, and a method for determining abnormal water quality based on fish behavior, and the already filed method can be applied to the present invention.

Another embodiment of the invention is shown in FIG.

In this embodiment, the river 6 is connected to tributaries 6a and 6b. 6M water is sent from the water intake 5c to the water purification plant 2 through the water pipe 8, but a water quality monitoring device 1d is installed at the water intake 5c. , transmits the water quality monitoring result signal 3d to the monitoring center 4. Further, a water quality monitoring device 111e is also provided in the tributary stream 6b, and the water quality monitoring signal 3e is transmitted to the monitoring center 4. By doing this, the main stream (river 6) at monitoring center 4
It is now possible to monitor the water quality of tributary 6b.

The same effects as in the case described above can be achieved.

In the present embodiment, the tributary water quality was monitored on the tributary 6b side, but it is not limited to this, and it is also possible to monitor the tributary 6a (i). Suspension and restart of water intake can be done in the same way as in the above case.

FIG. 4 shows still another embodiment of the present invention. This embodiment is a case of a river 6 whose water source is a dam 22. The raw water stored in the dam 22 is sent to the water purification plant 2a through the water pipe 8a, where it undergoes each treatment process as described above to obtain clean water, and is sent to the supply source through the water pipe 9a. Also, dam 22
Even in the case of the river 6 whose main water source is 1, as described above, the raw water is sent from the intake port 5d to the water treatment plant 2b through the water conduit 8b, and at the water purification plant 2b, clean water is obtained through each treatment process, and then sent to the supply source from the water transmission pipe 9b. It will be done. In this way, the raw water stored in the dam 22 and the raw water in the river 6 are purified respectively @2a.

2b for treatment, water quality monitoring devices 1e and 1d are installed to monitor the quality of raw water at each water intake, and the respective water quality monitoring signals 3e and 3d are sent to the monitoring centers ( (not shown). By doing this, water IR monitoring of the dam 22° river 6 can be carried out, and if abnormal water quality is determined by the water quality monitoring device 1e, measures can be taken to introduce water through the water pipe 8a and from the water treatment plant 2a to the water treatment plant 2b. By contacting the water quality monitoring device 1d, water intake, suspension of water intake, and restart of water intake are performed while estimating the flow time of harmful substances that cause abnormal water quality.

Also, water quality monitoring device lls is normal, water quality monitoring device 1
If abnormal water quality is determined in step d, the contamination of harmful substances is determined by river 6.
Therefore, the location of contamination can be discovered and countermeasures can be taken at an early stage. In addition, a water pipe 9c is installed between the water purification plants 2a and 2b so that fresh water can be sent to each other.By doing this, for example, if abnormal water quality occurs on the river 6 side, the purified water Fresh water can be sent from @2a to 2b through the water pipe 9c, and water can be sent from the water pipe 9b to the supply source without any hindrance. In the opposite case, that is, when abnormal water quality occurs on the dam 22 side, the water treatment plant 2
Water can be sent from b to 2a.

FIG. 5 shows still another embodiment of the present invention. In this embodiment, a water purification plant 2a2b is installed in a tributary 6a and a river 6, respectively, of a river 6 where tributaries 6a and 6b join together. This is the case. Water intake via water pipes 8a, 8b, water treatment plant 2a,
Processing step in 2b.

The water supply pipes 9a and 9b supply fresh water to the supply source in the same manner as described above. Water quality monitoring device 1e, ld is water conduit 8a
, installed at water intakes 5e and 5f of 8b.

Monitor the water quality of tributary 6a and river 6, and send the monitoring result signal 3
a, 3d are sent to the monitoring center (not recovered) located in the water purification plants 2a, 2b. At these monitoring centers, the water quality situation can be grasped from the monitoring results of the water quality monitoring devices 1e and ld, and as in the case described above, the water quality situation can be grasped in a wide area, and for example, the monitoring by the water quality monitoring device 1d indicates that the water quality is normal. , If abnormal water quality occurs in the water quality monitoring device 1d, water intake through the water conduit 8b is stopped, and raw water of normal water quality is transferred from the water conduit 8a to the water conduit 8c,
Then, water guide pipes 8a and 8b are connected by a water guide pipe 8C so that water can be introduced to the water purification plant 2b through 8b.
When using the water conduit 8c, other water conduit pipes 8a, 8
It is used by operating a valve (not shown) provided in b.

FIG. 6 shows yet another embodiment of the present invention. This embodiment is a case of rivers 6A and 6B having different water sources. Raw water is taken from the rivers 6A and 6B through water pipes 8a and 8d, and is sent to the water purification plant 2. Water quality monitoring device ile and 1st floor
is a monitoring center (not shown) that monitors the water quality of rivers 6A and 6B, respectively, and sends signals 3e and 3d of the water quality results to the water treatment plant 2.
Send to. By doing this, the monitoring center can grasp the water quality situation in a wide area from the monitoring results of the water quality monitoring devices 5i1e and if, as in the case described above. If abnormal water quality occurs in either river 6A or 6B, water intake from the river with abnormal water quality is stopped. At this time, a part of the abnormal raw water enters the water pipe 8a or 8d. In this case, the raw water in the water pipe 8a or 8d is discharged into the river from the front of the water treatment plant through the drain pipe indicated by the dotted line in the figure, and the raw water is discharged into the water treatment plant. Do not add abnormal raw water. After that, water quality monitoring device V! Water intake will be resumed once it is confirmed that the water quality has returned to normal at 11e or 1f. However, so that the raw water immediately after restarting does not enter the water purification plant 2, it is discharged into the river through the above-mentioned drainage pipe, and after the raw water that was stagnant before the water intake of the water conveyance pipe 8a or 8d is stopped, it is discharged to the water treatment plant 2. Make sure to conduct water.

In this way, in the case of this embodiment as well, when abnormal water quality is detected and the water quality returns to normal after that, the water production operation at the water purification plant can be quickly restored.

FIG. 7 shows another embodiment of the water quality monitoring device of the present invention. A preliminary water tank 14a, an ultraviolet lamp 23, an automatic feeder 24, and an underwater wiper 25 are added to those shown in FIG. 2 above.

Raw water is supplied to the preliminary water tank 14a by a water supply pipe 12 and a water supply pump 13. An ultraviolet lamp 23 is installed in the preliminary water tank 14a, and the ultraviolet lamp 23 irradiates the raw water with electric power 26. This irradiation charges microorganisms in the raw water. This prevents algae from adhering to the imaging surface of the monitoring aquarium 14. The raw water that has been irradiated with ultraviolet rays is guided to a water tank 14 for monitoring through a water pipe 27.

An automatic feeder 24 installed at the top of the rearing space of the aquarium 14 is used to supply food to the fish using a timer (not shown).
This can be done automatically in combination with

In addition, an underwater wiper 25 is provided on the underwater side of the imaging surface (glass) of the aquarium 14, but this is used to wipe away debris adhering to the imaging surface in order to make the imaging of the fish rearing space clearer with the television camera. Wipe it off.

According to the water quality monitoring device shown in the same figure.

Clear images can be obtained by removing organic organisms in the raw water, which are the source of algae, and by removing deposits from the imaging surface. In addition, automatic feeding of farmed fish can be performed.

Although the present invention has been described above with reference to freshwater such as rivers and lakes, it can also be applied to water quality monitoring of seawater (saltwater fish).

〔Effect of the invention〕

As described above, the present invention enables water quality monitoring and water intake of water sources in wide areas, thereby providing a water quality monitoring system for water areas and its water intake system that enables water quality monitoring and water intake of water sources in wide areas. .

[Brief explanation of drawings]

FIG. 1 is a perspective view of an embodiment of a water quality monitoring system for a water area and its water intake system according to the present invention, FIG. 2 is a perspective view of a water quality monitoring device according to an embodiment, and FIGS. 3 to 6 are a perspective view of an embodiment of the water quality monitoring system of the present invention. FIG. 7 is a perspective view showing different embodiments of a water quality monitoring system for a water area and a water intake system thereof according to the present invention, and FIG. be. 1, la, lb, lc, ld, le, lf - water quality monitoring device, 2, 2a, 2b - water treatment plant, 3, 3a. 3b, 3c, 3d, 3e-signal,
4... Monitoring center, 5.5a, 5b, 5c, 5d, 5
e, 5f-water intake 0.6, 6A, 6B...river, 18,
18a, 18b...fish, 23...ultraviolet lamp,
24...Automatic feeder. 25...Underwater wiper 1 Fig. 2 5d...Water intake Fig. 23...Ultraviolet lamp 24...Automatic feeder 25...・Underwater wiper

Claims (1)

[Claims] 1. A water area that monitors the water quality of a water source, including a water quality monitoring device that performs image recognition of fish behavior to determine normal water quality or abnormal water quality, and a water purification plant that purifies supplied raw water. In the water quality monitoring system, the water quality is monitored by providing the water quality monitoring devices at a plurality of locations in the water source and by providing a monitoring center at the water purification plant that receives signals from the water quality monitoring devices. water quality monitoring system. 2. The water quality monitoring device is installed upstream and downstream of the river area of the water source, and if abnormal water quality is detected at the upstream water quality monitoring point, the water quality monitoring device is installed to detect harmful substances that cause abnormal water quality up to the downstream water quality monitoring point. 2. The water quality monitoring system for a water area according to claim 1, wherein the water quality monitoring system on the downstream side is performed by predicting the arrival time of the water. 3. The water quality monitoring system transmits water quality monitoring results to the monitoring center differently when normal water quality and abnormal water quality are transmitted, and issues an alarm when abnormal water quality is determined, or transmits the water quality monitoring results to the monitoring center differently. 2. The water quality monitoring system for a water area according to claim 1, wherein the display is different from normal display in red. 4. The water quality monitoring system for a water area according to claim 1, wherein the water quality monitoring device is equipped with an ultraviolet lamp, an underwater wiper, and an automatic feeder. 5. In a water intake system for a water area that takes water from a water source, it is equipped with a water quality monitoring device that determines normal water quality or abnormal water quality by image recognition of fish behavior, and a water purification plant that purifies the supplied raw water. Water intakes are provided at multiple locations, the water quality monitoring device is provided at the water intakes, and a monitoring center that receives signals from the water quality monitoring device is provided at the water purification plant to monitor the water quality of the water area, and based on the monitoring results. A water intake system for a water area, characterized in that water intake from the water source is controlled. 6. The water intake system is configured to take water at both the upstream and downstream water intakes if the water quality is normal in monitoring of the water quality at the upstream and downstream water intakes of the river as the water source. water intake system for water bodies. 7. If the water intake system detects abnormal water quality at the upstream water intake by monitoring the water quality at the upstream and downstream water intakes of the river of the water source, it will stop water intake at the upstream water intake, and By predicting the time it takes for the harmful substances to reach the downstream water intake, only normal water quality is taken at the downstream water intake, and water intake at the downstream water intake is stopped before the harmful substances reach the downstream water intake. , raw water with abnormal water quality is not allowed to enter the waterway from this downstream water intake to the water purification plant, and when the water quality at the downstream water intake returns to normal by monitoring the water quality, water intake at the downstream water intake is resumed. 6. The water intake system for a water area according to claim 5. 8. The water intake system stops the treatment operation at the water treatment plant that produces raw water of abnormal water quality, performs treatment operation at the water treatment plant that produces raw water of normal water quality, and clean water obtained from the water treatment plant that performed this treatment operation. 6. The water intake system for a water area according to claim 5, wherein a part of the water is sent to a water purification plant where treatment operations have been stopped. 9. The water intake system for a water area according to claim 5, wherein the water intake system is provided with a water purification plant and a water quality monitoring device upstream and downstream of the river as the water source, respectively. 10. If abnormal water quality is detected by either the upstream or downstream water quality monitoring device, the water intake system stops the intake of the raw water where the abnormal water quality has been detected, takes only water of normal quality, and uses this normal raw water. 8. The water intake system for a water area according to claim 7, wherein the water intake system is adapted to guide water to upstream and downstream water purification plants.