JPH08254528A - Continuous water-quality monitoring apparatus - Google Patents

Abstract

PURPOSE: To obtain a continuous water-quality monitoring apparatus by which a general liquid quality including a water quality can be detected accurately, automatically and successively (continuously) so as to correspond to a change, in the water quality, generated in a short time. CONSTITUTION: Water 1, to be inspected, which flows so as to be branched into a branch passage 4 from a duct 3 through which the water 1 to be inspected is passed is taken into a reaction passage 5. A reagent is mixed with the water 1, to be inspected, which flows into an inflow port in the reaction passage 5 from a reagent mixing part 6. The color of the water 1, to be inspected, which appears in an outflow port in the reaction passage 5 is judged by a colorimetric judgment part 7. The reagent is supplied to the reagent mixing part 6 in such a way that a pressure is supplied by one or reagent cartridges 12 in which the reagent has been stored. An inspection result can be recorded automatically so as to be transmitted to a distant place. Thereby, a turbidity, a coloring reaction, a discoloration reaction, a coloring reaction due to the addition of the reagent and the like can be measured automatically.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention is used to test water quality, and more generally liquid quality, automatically and continuously or by remote control. The present invention is a water quality inspection of water intake,
It is used for river water quality inspection, rainfall water quality inspection, lake water quality inspection, liquid quality inspection in a liquid tank installed in an industrial plant, continuous liquid quality inspection for many samples, and so on.

[0002]

2. Description of the Related Art Conventionally, inspection of water quality has been carried out by an inspection person visiting the inspection site and inspecting water according to a predetermined procedure by collecting water from a river or lake.
Japanese Patent Application Laid-Open No. 1-141351 discloses an automatic or remote control for water quality inspection. This method is a form in which an electrical sensor or an electrode is brought into direct contact with the sample liquid to be inspected, such as measuring the ion concentration of the sample liquid to be inspected. Further, as a result of the applicant's investigation, there is no known automatic inspection device that adds a reagent to the sample to be inspected. As described above, in the conventional apparatus, it is not possible to use the commonly used visual inspection methods such as the degree of turbidity and the color reaction caused by the reagent, which are conventionally used.

[0003]

[Problems to be Solved by the Invention] Regarding water quality inspection,
In many cases, as described above, it is necessary to directly perform the work by hand, which requires a large number of man-hours. In order to investigate the effects of environmental pollution, we often use water quality in rivers and rainfall,
In addition, although it is necessary to measure over a long period in time series, the sampling interval is extremely long as long as it is manually performed, and there is a disadvantage that it cannot be inspected at night or in bad weather. In addition, the water quality inspection requires knowledge and experience to the inspector, and such technicians cannot be dispatched to the place where the inspection is required with sufficient frequency. Measurements by untrained technicians will give uneven results.

Further, in the conventional method of sampling as described above, there is a possibility of overlooking abnormal contamination for a very short time. That is, when the water quality is inspected at a position near the point where pollution occurs in a river or the like, the pollutant is not yet diffused into the river when the pollution is short. In such a case, the sampling method can be used to understand if the pollutant corresponds to the sampling cycle, but if the pollutant does not exist at the time of sampling during the sampling cycle, it may be overlooked. Become.

The present invention has been made against such a background, and provides an apparatus capable of automatically and continuously inspecting and analyzing the water quality or the liquid quality without the need for manpower each time. With the goal. An object of the present invention is to provide an inspection device capable of accurately detecting a change in water quality that occurs in a very short time. An object of the present invention is to provide an apparatus capable of obtaining a uniform inspection result without requiring a person in charge of the inspection to have knowledge and experience. An object of the present invention is to provide an apparatus capable of recording an inspection result without requiring manual labor each time. It is an object of the present invention to provide an apparatus capable of automatically transmitting a test result to a remote place without requiring manpower each time. An object of the present invention is to provide a device that can continuously inspect water quality. The present invention
It is an object of the present invention to provide a device which has been conventionally versatile and can automatically measure turbidity, color reaction, color change reaction, color reaction due to addition of a reagent, and the like.

[0006]

The present invention is characterized in that the water quality or liquid quality of tap water, rivers or lakes, industrial liquids, etc. is monitored automatically and continuously by remote control.

That is, according to the present invention, a branch passage provided in a pipe through which the water to be inspected passes, a reaction passage through which the water to be inspected divided into the branch passage passes, and an inflow port of the reaction passage is introduced. It is equipped with a reagent mixing section for mixing a reagent with water to be inspected, and a colorimetric determination section for determining the color of water to be inspected appearing at the outlet of this reaction path, for accumulating reagents and slightly lowering the internal pressure of the reagent mixing section One or more reagent cartridges for supplying a reagent to the reagent mixing section at a high pressure are provided.

The colorimetric determination section disperses a transparent pipe through which water to be inspected mixed with a reagent passes, a light source for irradiating the pipe, and an output light of the light source transmitted through the pipe. A color filter and a photoelectric converter that converts the amount of light separated by this color filter into an electric signal, and a jam plate that retains the water to be inspected passing through the reaction path is provided, and the reagent cartridge is A cylinder for holding the reagent, a movable piston provided in the cylinder,
A drive unit for moving the piston so as to generate the slightly higher pressure, and a check valve provided in the branch passage for measuring the amount of water passing through the discharge port of the colorimetric determination unit. It is desirable to have equipment.

[0009]

[Operation] The water (or liquid) to be monitored is taken into the pipe as the water to be inspected (or liquid), a part of it is branched into the branch passage and introduced into the reagent mixing section provided at the inlet of the reaction passage. At the same time, the reagents accumulated in one or more reagent cartridges are introduced into the test water (or liquid) introduced and mixed, and the mixture is passed through the reaction passage to promote the mixing. The test water (or liquid) mixed with the reagent is sent to the colorimetric determination unit, and the colorimetric determination unit determines the color of the test water (or liquid). Since the internal pressure of the reagent cartridge is kept slightly higher than the internal pressure of the reagent mixing section, the reagent is injected into the reagent mixing section by the internal pressure.

Collection of such test water (or liquid),
Since a series of processes of reagent mixing, colorimetric determination, and disposal can be performed automatically and continuously (continuously) by the control circuit, there is no individual difference even if the person in charge does not have the knowledge and experience. Such inspection results can be obtained. This inspection result can be automatically recorded and can be transmitted to a remote place from a communication path. Further, these can be automatically performed by utilizing the know-how of measurement including turbidity, coloring reaction, color change reaction, color reaction due to addition of a reagent, etc. which have been conventionally performed as a versatile test.

In the colorimetric determination section, the water to be inspected (or the liquid) mixed with the reagent passes through a transparent pipe, irradiates the pipe with light from a light source, and outputs the output light transmitted through the pipe. The light is separated by the color filter, and the amount of light separated by this separation is converted into an electric signal and transmitted. Therefore, the inspection result can be transmitted in real time to a remote place without requiring human labor.

Since a plurality of baffle plates are provided inside the reaction passage, the water to be inspected (or the liquid) into which the sample is collected and charged with the reagent is partially retained when passing through the reaction passage. Mixing and reaction are facilitated.

In the reagent cartridge, the driving means moves the piston provided in the cylinder holding the reagent in accordance with the instruction of the control circuit. Therefore, the pressure generated by the movement of the piston causes the reagent mixing section to move. The reagent can be added in a precise amount.

Further, since the backflow prevention valve is provided in the branch passage, the backflow of the test water (or liquid) sent to the reaction passage is prevented, and the concentration of the reagent is prevented from changing due to the backflow. It The amount of water passing through the outlet of the colorimetric determination unit is measured by the measuring device, and the measured value is fed back to the control circuit as control information.

[0015]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a diagram showing the overall configuration of an embodiment of the present invention.

In the embodiment of the present invention, the branch passage 4 provided in the pipe 3 of the water sampling / injection unit 2 through which the test water 1 passes, and the reaction through which the test water 1 split into the branch passage 4 passes. A channel 5, a reagent mixing section 6 for mixing a reagent into the test water 1 flowing into the inflow port of the reaction channel 5, and a colorimetric determination section for determining the color of the test water 1 appearing at the outflow port of the reaction channel 5. 7 and the colorimetric determination unit 7
Measuring device 8 for measuring the amount of water passing through the discharge port of water, and a waste water tank 9 for discarding the water to be inspected 1 measured by this measuring device 8.
And a data processing transfer unit 11 that processes data from the colorimetric determination unit 7 and the measuring device 8 and transfers the data via the communication line 10.
And one or more reagent cartridges 12 for accumulating the reagents and supplying the reagents to the reagent mixing section 6 at a pressure slightly higher than the internal pressure of the reagent mixing section 6, and a control circuit 13 for controlling from water collection to disposal. . If necessary, a throw-in type turbidimeter 14 or the like is used.

FIG. 2 is a diagram showing the construction of the water sampling / injecting section, the reagent mixing section and the reaction path in the embodiment of the present invention. In the water sampling / injection unit 2, a pump 21 that absorbs the test water 1 into the pipeline 3, a drive unit 22 that drives the pump 21 according to a control signal from the control circuit 13, and the absorbed test water. 1, a water pressure sensor 23 for detecting the water pressure, a water pressure adjusting shutter 24 for manually adjusting the water pressure, a filter 25 arranged in the branch passage 4, and a backflow provided at the outlet side of the branch passage 4 to prevent backflow. A check valve 26 is provided.

The reagent mixing section 6 is connected to a pipe for supplying water to be inspected from the check valve 26, and a pipe for introducing a reagent from the reagent cartridge 12 is introduced. A plurality of baffle plates 27 that promote mixing of the test water 1 and the reagent are disposed in the reaction path 5.

FIG. 3 is a diagram showing the structures of the colorimetric determination unit and the measuring device in the embodiment of the present invention. In the colorimetric determination unit 7, a transparent conduit 31 that is connected to the reaction path 5 and allows the test water 1 mixed with the reagent to pass therethrough, a light source 32 that illuminates the transparent conduit 31, and a transparent conduit 31 that passes through the transparent conduit 31. A plurality of color filters that disperse the output light of the light source 32 and a photoelectric converter 33 that converts the amount of light separated by the color filters into an electric signal are provided. As the color filters, a first color filter 34a that disperses red, a second color filter 34b that disperses green, and a third color filter 34c that disperses blue are arranged. The colorimetric determination unit 7 is configured to be movable manually or by driving means.

The measuring device 8 includes the transparent conduit 3 of the colorimetric judging section 7.
The amount of water is measured from the water droplets of the water to be inspected 1 that has passed through 1, and the light source 41 that irradiates the water droplets to be dropped and the light source 41
The control circuit 13 measures the drop interval of water drops by receiving light from the
And a photo sensor 42 for transferring the measured value.

FIG. 4 is a diagram showing the structure of the reagent cartridge in the embodiment of the present invention. A plurality of reagent cartridges 12 arranged on the base 51 are cylinders 5 for holding reagents.
2, a movable piston 53 provided in the cylinder 52, and a drive means 54 for moving the piston 53 in the direction in which the reagent is supplied to the reagent mixing section 6. The piston 53 and the drive means 54 are connected by a screw shaft 55, and the piston 53 moves in the arrow direction by the rotation of the drive means.

Next, the operation of the embodiment of the present invention configured as described above will be described.

A predetermined reagent is stored in advance in each of the plurality of reagent cartridges 12. The amount is, for example, about 500 cc, which corresponds to 40 to 50 days. When a drive signal is sent from the control circuit 13 to the drive unit 22 of the water sampling / injection unit 2, the drive unit 22 drives the pump 21. The water to be inspected 1 is sucked into the pipe 3 by the driving of the pump 21, and a part of the water 1 flows into the branch 4 due to the resistance of the water pressure adjusting shutter 24. The water pressure at that time is detected by the water pressure sensor 23, and the control circuit 13 controls the drive unit 22 based on the detected value and adjusts the output to the pump 21 to make the water pressure constant so as to reach the set flow rate. During this adjustment, the water pressure adjusting shutter 24 is manually operated to facilitate the adjustment.

The water 1 to be inspected, which has been branched to the branch passage 4, is filtered by the filter 25 and flows into the reagent mixing section 6. The reagent mixing unit 6 is charged with a required amount of reagents from a plurality of reagent cartridges 12. As shown in FIG. 4, the supply of this reagent is performed by rotating the drive means 54 which receives a drive instruction from the control circuit 13, and by this rotation, the screw shaft 55 moves in the direction of the arrow to push out the piston 53. Be seen.

The water to be inspected 1 into which the reagent has been fed is sent to the reaction path 5 and temporarily retained by the plurality of jamming plates 27 to promote mixing. The test water 1 in which the reagents are sufficiently mixed is sent to the colorimetric determination unit 7. As shown in FIG. 3, the colorimetric determination unit 7 has a transparent pipe 31 as its conduit. Therefore, the light passes through the water to be inspected 1 and the first color filter 34.
a, the second color filter 34b and the third color filter 3
4c splits into red, green and blue. The dispersed light is converted into an electric signal by the photoelectric converter 33 and transmitted to the data processing transfer unit 11. The colorimetric determination unit 7 can be set to an optimum position manually or by a separately provided driving means according to the inspection target water.

The water 1 to be inspected, which has passed through the colorimetric judging section 7, is dropped on the measuring device 8 as shown in FIG. The measuring device 8 irradiates light from the light source 41 to the water drops of the test water 1 to be dropped, measures the drop interval of the water drops, and sends the measured value to the data processing transfer unit 11 and the control circuit 13. The control circuit 13 draws water according to the dropping interval (dripping flow rate).
The drive unit 22 of the injection unit 2 is controlled, and the measurement data transmitted from the colorimetric determination unit 7 to the data processing transfer unit 11 is processed and sent to the measurement base via the communication line 10.

[0027]

As described above, according to the present invention, the quality of water or liquid is automatically and continuously (continuously), without going to the sampling site of the water or liquid to be inspected.
It has the effect of being able to accurately detect water quality changes that occur in a very short time. Further, even a person in charge who does not have the knowledge and experience necessary for performing the inspection can obtain the inspection result without individual difference and can automatically transmit the inspection result to a remote place. Furthermore, it is possible to automatically perform the measurement using know-how such as turbidity, color reaction, color change reaction, and color reaction due to addition of a reagent, which have been conventionally used and have general versatility.

[Brief description of drawings]

FIG. 1 is a diagram showing the overall configuration of an embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of a water sampling / injecting section, a reagent mixing section, and a reaction path in the example of the present invention.

FIG. 3 is a diagram showing a configuration of a colorimetric determination unit and a measuring device according to an embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a reagent cartridge according to an embodiment of the present invention.

[Explanation of symbols]

 1 Water to be inspected 2 Water sampling / injection section 3 Pipe line 4 Branch path 5 Reaction path 6 Reagent mixing section 7 Colorimetric determination section 8 Measuring device 9 Waste water tank 10 Communication line 11 Data processing transfer section 12 Reagent cartridge 13 Control circuit 14 Turbidity Degree meter 21 Pump 22 Drive part 23 Water pressure sensor 24 Water pressure adjusting shutter 25 Filter 26 Backflow prevention valve 27 Jam plate 31 Transparent pipe 32, 41 Light source 33 Photoelectric converter 34a First color filter 34b Second color filter 34c Third Color filter 42 Photo sensor 51 units 52 Cylinder 53 Piston 54 Driving means 55 Screw shaft

Claims (6)

[Claims] 1. A branch passage provided in a pipe through which the water to be inspected passes, a reaction passage through which the water to be inspected divided into this branch passage passes, and water to be inspected flowing into an inlet of the reaction passage. It is equipped with a reagent mixing section that mixes reagents and a colorimetric determination section that determines the color of the water to be inspected that appears at the outlet of this reaction path, and accumulates the reagent to make the reagent slightly higher than the internal pressure of the reagent mixing section. A continuous water quality monitoring device comprising one or more reagent cartridges for supplying the above to the reagent mixing section. 2. The colorimetric determination unit includes a transparent pipe through which water to be inspected mixed with a reagent passes, a light source for irradiating the pipe, and an output light of the light source passing through the pipe. 2. A color filter for separating the light and a photoelectric converter for converting the amount of light separated by the color filter into an electric signal.
The continuous water quality monitoring device described. 3. The continuous water quality monitoring device according to claim 1, further comprising a baffle plate for retaining the test water passing inside the reaction passage. 4. The reagent cartridge includes a cylinder for holding a reagent, a movable piston provided in the cylinder, and a drive means for moving the piston so as to generate the slightly high pressure. Item 5. The continuous water quality monitoring device according to any one of items 1 to 3. 5. The continuous water quality monitoring device according to claim 1, wherein a check valve is provided in the branch passage. 6. The continuous water quality monitoring device according to claim 1, further comprising a measuring device that measures the amount of water passing through the discharge port of the colorimetric determination unit.