JPH0483575A - Water quality monitor apparatus of water area - Google Patents

Abstract

PURPOSE:To monitor the quality of the head even when a harmful substance is generated individually or simultaneously by providing respective detectors of a toxic substance, an offensive smell and an oil component and guiding a part of the raw water introduced into a water purifying plant to the respective detectors and providing a monitor center receiving the signals from the respective detectors to the air purifying plant. CONSTITUTION:In a toxic substance detector 10, raw water is guided to a fish monitor water tank 12 breeding fishes 13 and the imaging signal of a camera 14 is sent to an image processor 15 to process the behavior of fishes to transmit a judgment signal to a monitor center 4. In an offensive smell detector 20, the raw water is guided to an offensive smell detecting water tank 22 and the value detected by an offensive smell sensor 23 is sent to an offensive smell judging device 24 to judge an offensive smell and a judgment signal 25 is transmitted to the monitor center 4. In an oil component detector 30, the raw water is guided to an oil component detecting water tank 32 and the light from the light emitting part 33 provided above the surface of the water in the tank 32 is detected by a light detection part 34 and the signal thereof is sent to an optical detector 35 to transmit a result signal 36 to the monitor center 4. Therefore, the discovery of abnormality at an early stage, emergent disposal such as a treatment measure or the stop of water-intake and the reopening of water-intake can rapidly be performed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a water quality monitoring system for water bodies.

[Conventional technology]

When harmful substances are mixed into raw water from a water treatment plant, etc., they may dissolve into the water, emit a foul odor, or form an oil film that floats to the surface of the ice. To determine this, a portion of the raw water is introduced into an aquarium, and the crucian carp is grown in this aquarium.

The method is used to raise aquarium animals such as carp, dace, and bitterling and monitor their reactions to harmful substances. That is, when a harmful poisonous substance is mixed into raw water, the above-mentioned phenomenon in which fish behave abnormally or die is used to monitor the inflow of toxic substances into the raw water. Furthermore, in order to detect odors and oil slicks, it is necessary to rely on the human sense of sight and smell through monitoring patrols, or on intermittent manual water quality analysis.

Water temperature, turbidity, p) using industrial instruments to measure the quality of raw water
(Electrical conductivity, etc. are measured in a series of ways.However, detection of toxic substances in raw water relies on chemical analysis, but there are many types to be detected, and measurement is time-consuming and economical. It is extremely difficult to detect oil content. Also, chemical analysis is required to detect oil content.

As described above, the current monitoring of hazardous substances in water relies on human vision, smell, and complicated manual analysis.

For this reason, there was a drawback that continuous monitoring and early detection were not possible.

A method for monitoring fish was discovered in Japanese Patent Laid-Open No. 6, which discovered that abnormal behavior of fish could be detected early by detecting fish in an aquarium using an industrial television camera (ITV) and processing the images.
No. 2-80557, Japanese Unexamined Patent Publication No. 62-83663). However, even in this case, it was impossible to detect the odor or oil itself.6 [Problems to be Solved by the Invention] The above-mentioned conventional technology does not allow the detection of harmful substances (toxic components) in water bodies.

There were problems in monitoring the water quality when water (foul odors, oil) was mixed in.

An object of the present invention is to provide a water quality monitoring system for a water area that enables water quality monitoring of a water source even if harmful substances occur singly or simultaneously.

[Means to solve the problem]

The above purpose is to provide a toxic substance detection device, an odor detection device, and
By installing oil detection devices, guiding some of the raw water introduced into the water treatment plant to these detection devices, and installing a monitoring center at the water treatment plant that receives signals from these three detection devices to monitor water quality. achieved.

[Effect]

Water quality of water sources can be monitored by providing image monitoring of fish behavior for toxic substance detection, an odor sensor for odor detection, and an oil film sensor for oil detection.

〔Example〕

An embodiment of the present invention will be described below with reference to FIG. First, the configuration of the embodiment of the present invention will be described. Raw water is taken from a river and sent to a water purification plant 2 via a water supply pipe 1. The water undergoes various purification processes at the water treatment plant, becomes purified water, and is sent to the supply source through the water pipe 3. A portion of the raw water in the water pipe 1 is transferred to the toxic substance detection device 1.
0. It is sent to the odor detection device 20 and the oil content detection device 30. Harmful substances mixed into the raw water are detected by these three detection devices 10, 20 and 30, and the respective detection results are transmitted as signals 16, 25 and 36 to a monitoring center located in the water purification plant 2. Next, each detection device will be described. In the toxic substance detection device 10, raw water is sent to an unmonitored water tank 12 via an introduction pipe 11.

Fish 13 are kept in a fish monitoring tank 12, and their behavior is imaged with an industrial camera 14, and the imaged signal is sent to an image processing device 15, where the fish behavior is processed and a judgment signal 1 is generated.
6 to the monitoring center 4.

The raw water that has passed through the unmonitored water tank 12 is discharged from the discharge pipe 17.

In the odor detection device 20, raw water is sent to an odor detection water tank 22 via an introduction pipe 21. An odor sensor 23 is installed near the water surface of the odor detection water tank 22. The value detected by the odor sensor 23 is sent to the odor determiner 24, where the odor is determined and a signal 25 is sent to the monitoring center. The raw water that has entered the odor detection water tank 22 is discharged from the system through a drain pipe 26.

Furthermore, in the oil detection device 30, raw water is sent to an oil detection water tank 32 via an introduction pipe 31. A light emitting section 33 and a light receiving section 34 are provided above the water surface of the oil detection water tank 32, a signal from the light receiving section 34 is sent to an optical detector 35, and a result signal from the optical detector 35 is sent to the monitoring center 4. The raw water that has entered the oil detection water tank 32 is discharged from the system through a drain pipe 37.

Next, the operation will be explained. In the toxic substance detection device 10, the behavior of fish 13 in a fish monitoring tank 12 is captured by a camera 14. The imaging signal is guided to an image processing device 15. The image processing device 15 first captures captured images at preset time intervals and performs image recognition of the fish 13.
Calculate the center of gravity (position) and velocity of 3. The center of gravity and velocity of the fish 13 are calculated sequentially at each time interval, and the calculation results are stored in the memory. Based on this memory information,
The behavior of the fish 13 is monitored by calculating the statistical pattern of the position and speed of the fish 13 during a preset measurement time T, and based on the monitoring results, a signal indicating whether the water quality is normal or abnormal is sent to the monitoring center 4. Send. The monitoring center 4 displays the signal on a monitor television (not shown). This allows monitoring of toxic substances in water bodies.

Next, in the odor detection device W20, an odor sensor 23 is installed near the surface of the raw water that has entered the odor detection water tank 22. The odor sensor 23 is a semiconductor gas sensor or a catalytic gas sensor (electrical resistance changes when a gas component is adsorbed to the semiconductor surface or undergoes a chemical reaction on the surface), and the value detected by this sensor is sent to the odor determination device 24. The odor determiner 24 converts the electrical signal into an odor concentration.

A signal 25 from the odor determiner 24 is transmitted to the monitoring center 4, and the monitoring center 4 displays the signal on a monitor television (not shown). This makes it possible to monitor the presence or absence of odors in water bodies.

Furthermore, in the oil detection device 30, an optical surface scattering turbidity meter is installed above the water surface of the raw water in the oil detection water tank 32, and the light from the light emitting section 33 is received by the light receiving section 34, and this signal is optically transmitted. It is sent to the detector 35. The optical detector 35 measures the surface scattering turbidity value in advance with an oil film formed, compares it with this value, and sends a result signal 36 to the monitoring center 4. The monitoring center 4 displays the signal on a monitor television (not shown). This makes it possible to monitor the presence or absence of oil in water bodies.

As described above, according to this embodiment, water quality monitoring equipment W (toxic substance detection equipment, odor detection equipment, oil content detection equipment) is installed in the water area to be treated, and signals of monitoring results are sent to the monitoring center. Water quality can be monitored at the monitoring center, and emergency measures such as early detection of abnormalities, treatment measures and suspension of water intake can be taken, and water intake can be restarted quickly, ensuring a high level of water quality safety. .

Other embodiments of the invention are set out below.

1) As a method for detecting toxic substances, in addition to image processing of fish behavior, a phototube sensor may be used as shown in FIG. In FIG. 2, a fish tank 40. Raw water introduction pipe 41. Drainage pipe 42, fish 43. Floodlight 44.
Light receiver 45. It is composed of a counter 47. Fish 43 are raised in a fish tank 40 into which raw water is introduced, and the fish 43 are raised using a feeder 44 and a light receiver 45 installed on both sides of the fish tank 40.
The behavior of the operator is measured as a light shielding frequency, and the signal 46 is transmitted to a counter 47. This determines whether the water quality is normal or abnormal based on the swimming behavior characteristics of the fish.

Although not particularly shown, it is also possible to determine whether the water quality is normal or abnormal based on the respiration characteristics of fish using electrodes.

2) As an odor detection method, gas (air) on the surface of raw water can be drawn close to the observer, as shown in FIG. In FIG. 3, odor detection water tank 50. Raw water introduction pipe 51. Drain pipe 52. Suction pump 53. It is composed of a gas delivery pipe 54.

Gas near the surface of the raw water is suctioned by a suction pump 53 and sent to the vicinity of the operator in the monitoring room through a gas delivery pipe 54. This allows odor to be determined using the human sense of smell.

3) As an oil content detection method, oil content can be measured from the amount of absorption in an infrared spectrum (not shown).

4) In Figure 1, separate detection tanks were used for toxic substance detection, odor detection, and oil detection, but
It is also possible to monitor fish behavior, detect odor, and detect oil in one aquarium.

〔Effect of the invention〕

According to the invention, detection of toxic substances in water pollution sources.

It is possible to provide a water quality monitoring system that makes it possible to monitor the water quality of a water body by detecting odor and detecting oil content.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a water quality monitoring system for a water area according to the present invention, and FIGS. 2 and 3 are explanatory diagrams of other embodiments. 2... Water purification plant, 4... Monitoring center, 10... Toxic substance detection device, 14... Camera, 15... Image processing device, 20... Odor detection device, 23... Odor Sensor, 24... Odor determination device, 30... Oil detection device, 3
3... Light emitting section, 34... Light receiving section, 35. Optical detector.

Claims (1)

[Scope of Claims] 1. A water quality monitoring system for a water area that includes a water purification plant that purifies raw water supplied from a river or the like and monitors the water quality of the water source, comprising: a toxic substance detection device and an odor detection device in the water quality monitoring system; and an oil content detection device, and a monitoring center for receiving signals from the three detection devices is provided at the water purification plant to monitor water quality. 2. In claim 1, the toxic substance detection device performs image recognition of the behavior of fish in the aquarium into which the raw water is introduced, or recognizes the behavior of the fish using a phototube sensor, or further recognizes the respiration of the fish by using an electrode. A water quality monitoring system for water bodies that determines whether the water quality is normal or abnormal based on its characteristics. 3. In claim 1, the odor detection device is provided with a semiconductor gas sensor or a catalytic gas sensor and an adsorbent usage sensor as an odor sensor near the water surface of the aquarium into which the raw water is introduced, and detects the odor based on the signal from the odor sensor. A water quality monitoring system for water bodies that detects. 4. In claim 1, the oil content detection device is provided with an optical light emitting part and a light receiving part above the water surface of the aquarium into which the raw water is introduced, and detects the oil content by the signal from the light receiving part. Monitoring system. 5. The water quality monitoring system according to claim 1, wherein at least two of the detection devices are used in combination.