JPH0894608A - Intake water quality control device - Google Patents

Abstract

PURPOSE: To provide an intake water quality control device capable of quickly obtaining test results, facilitating attaining a water quality standard and controlling well. CONSTITUTION: For source water for inspection which is sampled in an intake facility 50, the water quality is measured with a water quality monitor 60, the water quality is operation-processed with an operation processor 72, and according to the operation result, the intake path is switched with a path switcher 80 to select the point of intake.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality monitoring device,
Particularly, it relates to a water quality control device for water intake such as river water and lake water.

[0002]

2. Description of the Related Art Generally, river water, lake water, and ground water are used as a tap water source. Raw water from the tap water source, which is taken by the water intake facility, is sent to the water purification facility via the storage pond or directly to the water purification plant.

When a river is used as a water source, the water quality changes greatly compared to lakes and dam lakes, and there is a high possibility that harmful substances will be mixed. The water quality of rivers is influenced by man-made pollution such as factory effluent, urban sewage, domestic effluent, livestock effluent, agricultural chemicals and fertilizers.
It changes due to weather conditions and geology.

At present, the water quality of the water source is controlled after the water is taken from a river or the like, and if there is a storage pond, the water quality (pH, conductivity,
Water quality, such as water temperature and turbidity, etc.) is automatically monitored, or water treatment staff collect water for manual analysis. When the water is directly sent to the water treatment plant, the water quality of the landing well is automatically monitored, or the staff regularly collects water and conducts manual analysis. However, in the current monitoring of water source water quality, humic substances, which are the basis of trihalomethane (subject to regulation of tap water quality standard), which is a carcinogen that has become a problem in recent years, and dissolved organic substances that are chromatic components such as fulvic acid Not monitoring. Therefore, many water purification plants do it. The chlorine and the dissolved organic matter react with each other by the pre-chlorine injection operation to remove ammonia and manganese in the water and generate trihalomethane. Further, when chemically synthesized color water such as dyeing wastewater is mixed, it is difficult to treat it by a normal water purification treatment operation, and therefore the raw water of a tap water such as a reservoir must be discarded at worst.

Further, in the river, since the water quality varies greatly as described above, even if the water quality is unsuitable as raw water for the tap water, the water treatment plan is performed according to the water intake plan and a great burden is imposed on the water purification facility. Therefore, it is necessary not only to select water with good water quality in the depth direction of rivers, but also to select water intake points with good water quality.

In the dam lake, seasonal thermal stratification phenomenon occurs, and the water quality may change remarkably depending on the depth. If there are many landslides and the particles are fine in the upstream part of the dam, the turbid water that flows in during the flood will form a layer according to the density of the water. If a turbid water layer occurs in a layer with an intake, the turbid water must be treated continuously, which is very disadvantageous. Therefore, the height of the water intake is set to multiple levels and the turbid water layer is removed to take in water. Selective water intake
It is conducted based on the results of water quality monitoring and water quality test for the introduced water.

[0007]

The selective water intake is performed based on the operator's visual inspection, the result of water quality monitoring by a water quality meter, and the result of water quality test. The water sampling point (installation site) of the water quality meter is preferably upstream of the intake, but in most cases, the uppermost stream of the facility such as a sand basin or landing well is used. When selective intake is performed based on the monitoring results of water that has already been taken, it is difficult to grasp the condition of thermal stratification in the dam lake, and it is difficult to select the best intake. In addition, iron, manganese, etc. that cause elution from bottom mud, which cannot be continuously measured using a water quality meter, must select the intake port based on the water quality test results, and the test results can be obtained. There is a delay until.

Further, the conventional water intake management system has the following problems.

(1) Since the ultraviolet absorption (UV) and chromaticity of the water source water quality are not measured, the concentration of organic substances in the water source cannot be grasped in real time. Therefore, chlorine and organic substances react with each other by the pre-chlorine injection operation in water purification treatment, and the production of trihalomethane, which is a carcinogen, increases, making it difficult to achieve the water quality standard.

(2) When chemically synthesized colored water such as dyeing wastewater is mixed in a river or the like, the colored water is taken and flows into a storage pond or a landing well to impose a burden on the water treatment facility, or the water in the worst reservoir is discarded. Must.

(3) Since the operation of water intake from rivers etc. is controlled only by the amount of water intake and no water intake point is selected in consideration of the water quality at the water intake point, a good water intake point cannot be selected, resulting in lack of reliability. It was

The present invention has been made in view of the above problems, and an object thereof is to provide an intake water quality control device capable of obtaining test results quickly, facilitating achievement of water quality standards, and performing good control. It is characterized by doing.

[0013]

In order to achieve the above object, an intake water quality control device of the present invention is provided with an intake facility for taking in water from a water source, and a water quality sampled from the source water collected in the intake facility. A water quality monitor for measuring the water quality, a flow path switching device arranged in a downstream flow path of the water intake facility, and a flow path switching device based on the calculation processing result based on the water quality monitor water detection data. It consists of a management facility that controls and switches the flow path of the water source water sampled to the water intake facility, and monitors the water quality by a measurement cell unit for passing a sample water and a sample water in the measurement cell unit. An optical system that obtains a sample optical signal by irradiating light and obtains a reference optical signal by light other than the sample irradiation light, and performs arithmetic processing based on the sample optical signal and the reference optical signal obtained by the optical system. Estimated value of inclusions in the test water Calculated for measurement processing unit, characterized by being constituted by.

The intake water quality control device of the present invention comprises an intake facility for collecting water source water and a water quality monitor for detecting the water collected in the intake facility. A plurality of water quality monitor water intakes are provided at different depths of water taken into the water intake facility, and the water quality is measured by measuring the water source water flowing through any one of the plurality of water intakes. Is characterized by measuring.

[0015]

In the intake water quality control device according to the first to fourth aspects, the intake point is selected using the water quality monitor, the water source water quality is monitored, and when the set upper limit value is exceeded, the flowing water flow path is switched and drained.

In the intake water quality control device according to claims 6 to 8, in the selective intake facility, a water intake port is installed upstream of each intake port to grasp the water quality state in the depth direction.

[0017]

Embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 shows a schematic structure of a water intake control device according to a first embodiment of the present invention. In FIG. 1, 50 is a water intake facility for taking water from a water source such as a river or lake through a water flow pipe 40, and 60. Is a water quality monitor installed at the water intake facility, which measures pH, water temperature, conductivity, chromaticity, turbidity, ultraviolet absorption (U
V), dissolved oxygen (DO) is continuously measured. Reference numeral 70 denotes a management facility, which includes a control device (DDC) 71 and a processing unit (CP).
U) 72. Reference numeral 80 is a flow path switching device that switches the flow paths in accordance with a flow path switching signal from the control device of the management facility 70, and 90 is a reservoir.

In the water intake management device of FIG. 1, the water intake facility 5
0 takes water from the water source, inspects the water quality with the water quality monitor 60, and guides the water quality signal S1 to the control device 71 of the management facility 70.
The control device 71 guides a control signal to the arithmetic processing unit 72 based on the water quality signal S1. The arithmetic control unit 72 performs arithmetic processing based on the control signal and guides the arithmetic signal to the control device 71,
1 is a flow path switching signal S2 based on the calculation signal.
0, and the flow path switch 80 switches the flow path of the water source water to the reservoir 90 or drainage.

FIG. 4 shows an example of a water quality monitor. In FIG. 4, 1 is a pressure regulating valve, 2a is a first three-way switching solenoid valve connected to the pressure regulating valve 1 at its downstream stage, 3a.
Is a flow rate adjusting valve connected to the first three-way switching solenoid valve 2a, and the pressure adjusting valve 1, the first three-way switching solenoid valve 2a, and the first flow rate adjusting valve 3a are used to measure the measurement system flow path A.
Is formed. Further, in FIG. 4, 3b is a second flow rate adjusting valve connected to the first three-way switching valve 2a, and 4a and 4b are pipe cleaning filters 4a and 4b. It is formed. Furthermore, the pressure regulating valve 1
A high pressure flush cleaning system path C is formed by interposing a solenoid valve 7 between the downstream stage of the first three-way switching solenoid valve 2a and a turbidity meter 10 described later. Furthermore, 6 is a flow meter,
Reference numeral 2b is a second three-way switching solenoid valve connected between the downstream stage of the flow meter 6 and the turbidity meter 10, 8 is a chemical liquid tank, and 9 is a cleaning agent injection pump for injecting a cleaning agent such as a chemical solution. A pump for injecting a chemical liquid, and a chemical liquid cleaning system flow path D is formed by these second three-way switching electromagnetic valve 2b, chemical liquid tank 8 and chemical liquid injection pump 9. 30 is UV and VI
The measurement processing unit receives the reference signal R for S and the sample signal for UV and VIS.

FIG. 5 shows a schematic structure of the measurement cell section and the measurement processing section 30 of the turbidity meter 10. The cylinder 11 is arranged at a predetermined angle θ with respect to the horizontal plane.
A sample water inlet 12 is provided on one end side surface, and a sample water outlet 13 is provided on the other end side surface. A measurement window 14a is provided at one opening end of the cylindrical body 11, and a measurement window 14b is provided at the other opening end.

Further, as shown in FIG. 5, a low pressure mercury lamp 15 as a light emitting portion located on the axis of the cylindrical body 11 is disposed near the measurement window 14a, and the low pressure mercury lamp 15 is provided between the measurement window 14a and the low pressure mercury lamp 15. Is provided with a light separation slitter 32. A photoelectric conversion element 33a, which is a first light receiving portion, is arranged on the optical path of the separated light beam by the light separation slitter 32, and a second light receiving portion located on the axis of the cylinder 11 is provided in the vicinity of the measurement window 14b. A photoelectric conversion element 33b, which is a unit, is arranged. Three
4 is the output signal of the photoelectric conversion element 33a and the photoelectric conversion element 33.
An amplifier for amplifying the output signal of b as an input, 35 is an arithmetic processing unit for performing a predetermined arithmetic processing by using the output signal of the amplifier 34 as an input, and includes a low pressure mercury lamp 31, an optical separation slitter 3
2, the measurement processing unit 30 is configured by the photoelectric conversion elements 33a and 33b, the amplifier 34, and the arithmetic processing unit 35.

In the water quality monitor having the above structure, when cleaning the turbidity meter, the hydrochloric acid chemical solution (concentration about 2%) is supplied from the chemical solution tank 8 by the chemical solution injection pump 9 through the three-way switching solenoid valve 2b. Fill in 10 measuring cells,
Predominantly react hydrochloric acid in the measuring cell for a certain period of time. As a result, biological slime, total iron manganese, etc. attached to the inner wall of the measurement cell are peeled off.

After the chemical treatment, a high-pressure flow is passed through the high-pressure flush cleaning path C to the measurement cell section of the turbidity meter 10 to wash the measurement cell section and a water-flow cleaning system flow path B
After washing with water, the test water is passed through the measuring system flow path A and the turbidity meter 1
Lead to 0 measurement cell section.

That is, the dirty components in the chemical solution are washed with a turbulent water stream for a certain period of time. This completes the chemical cleaning and starts the inflow of test water. This series of chemical cleaning operations
This is performed by the control system shown in FIG. 6, using the sequencer 21 and the touch panel 22 to open and close the solenoid valve in the controlled device section 23 such as the turbidity meter, the solenoid valve, and the pump, turn on / off the chemical pump, etc. Is executed automatically.

In the washing of the turbidity meter, the flow rate of water washing can be 1 (liter / min), the sample stays in the measuring cell for 1.88 seconds and flows at an average velocity of 5.3 cm / sec. A turbulent flow of 0.106 can be realized in the measuring cell. As a result, a sufficient cleaning effect can be obtained.

The set flow rate of this cleaning operation, the chemical solution retention time,
The chemical solution density and the cleaning time can be freely changed by the sequencer and the touch panel according to the degree of contamination of the test water, and the following various effects can be obtained.

(1) By cleaning with a chemical solution (about 12% Hc), it is possible to effectively remove all manganese and all iron-based adhering chromaticity components that are difficult to remove by wiper cleaning.

(2) Dirt (turbid component, chromaticity component, biological slime) eluted in the stagnant chemical liquid can be effectively removed from the measurement cell by washing with a water stream which realizes a turbulent flow state.

(3) In a series of chemical cleaning operations, the control device (sequencer) and the touch panel can be used to automatically operate the control devices such as the solenoid valve and the pump, so that automatic cleaning is possible.

(4) The chemical cleaning operation parameters (water flow cleaning flow rate setting, chemical retention time, cleaning time, etc.) can be easily set and changed on the touch panel type graphic display,
The cleaning operation can be graphically monitored.

(5) Maintenance intervals can be significantly extended (3 months or more), and maintenance costs can be reduced.

(6) The maintenance interval can be greatly extended by the combination of chemical cleaning and periodic zero-point calibration of the turbidity meter.

(7) The main cleaning has a higher cleaning effect than the wiper cleaning or the jet water stream cleaning alone.

(8) Since the rotating part of the wiper cleaning does not exist in the cleaning system, the cause of failure is reduced.

The most characteristic feature of the above water quality monitor is that it is provided with a measurement processing unit as shown in FIG.
As shown in FIG. 7, the UV signal (absorbance at 25 mm) of the purified water has a high correlation with the amount of trihalomethane, so a low-concentration UV meter having a function of estimating the amount of trihalomethane using the UV signal is provided. Is.

That is, as shown in FIG. 5, the measuring unit having a constant inclination of the sample water is measured in a flow cell format with a measuring cell length of 10 mm.
UV signal (absorbance at 254 mm (Ab
is)) and VIS signal (absorbance at 546 mm (Ab
s)) is measured, and the total trihalomethane amount (TTH) is measured from the UV signal or the UV-VIS signal (turbidity correction signal).
M: Chloroform CHCl ₃ + CHCl ₂ Br + CHCl
The total amount of Br ₂ + gromoform CHBr ₃ ) is estimated and the UV signal and the VIS signal are output respectively. The light emitted from the low-pressure mercury lamp 31 (254 mm and 546 mm wavelength output) as a light source is a reference light (UV and VIS respectively) by the light separation slitter 32 before entering the measurement cell.
Sample light after passing through the measuring cell (UV, VI
S respectively) is measured. The reference light is photoelectrically converted by the photoelectric conversion element 33 a and input to the amplifier 34, and the sample light is photoelectrically converted by the photoelectric conversion element 33 b and input to the amplifier 34. Each signal based on the reference light and the sample light input to the amplifier 34 is amplified and input to the calculator 35. The arithmetic unit 35 performs arithmetic processing on the basis of these signals to perform each UV value, VIS value, TT
Output the HM estimate.

According to the water quality monitor of this example, the following effects can be obtained.

(1) Continuous measurement of UV signal and turbidity signal,
The amount of trihalomethane can be continuously estimated from the correlation equation between the UV signal or the turbidity-corrected UV signal and the amount of trihalomethane.

(2) At the same time, it becomes possible to estimate the amount of organic substances (for example, the amount of potassium permanganate dissolved or the like) from the UV signal, and it is possible to manage delicious water.

(3) Since it has an automatic zero point calibration function and a chemical cleaning function, the maintenance cycle can be extended (3 months or more).

(4) A series of automatic zero point calibration and chemical cleaning operation are performed by the controller (sequencer) and touch panel.
Can drive automatically.

(5) The measuring cell has a flow cell format,
Since the measuring cell is as long as 100 mm, it is possible to measure a low concentration UV value.

(6) Reference optical signal (UV, VI
Since S) is separated before entering the measuring cell, even if the low-pressure mercury lamp changes its output, it is not affected by it.

Although the low-pressure mercury lamp is used as the light emitting portion (light source) in the example, the invention is not limited to this, and may be a light emitting diode or a light bulb as long as the above-mentioned conditions are satisfied.

FIG. 2 shows a water intake control device according to a second embodiment of the present invention. In FIG. 2, 50a is a first water intake facility provided with a first water quality monitor 60a. Reference numeral 80a is a first flow path switching device, 90a is a first reservoir, 100 is a water purification treatment facility and is provided with a management facility 70, and the management facility 70 is provided with a control device and an arithmetic processing device. 50b is a second intake facility, 80b is a second flow path switching device, and 90b is a second reservoir.

The first water intake facility 50a is disposed upstream of the water source 110 such as a river, and the first flow path switch 80a,
Water is supplied to the water purification treatment facility 100 through the first reservoir 90a. The second water intake facility 50b is arranged on the downstream side of the water source 110, and supplies the water intake to the water purification treatment facility 100 through the second flow path switch 80b and the second reservoir 90b.

In the water intake management device of FIG. 2, the water intake facility 5
The water quality monitors 60a and 60b of 0a and 50b constantly monitor the water quality of the tap water taken and send the water quality signal to the control tower at all times. Before judging the quality of water from the sent water quality signal, if polluted water is taken in and an abnormal value is indicated, the flow path switching device is activated, the flow path is switched to the reservoir direction, and before the polluted water flows into the reservoir etc. Drain to. Here, the abnormal water quality value is set in advance, and the priority order of the water quality is UV, chromaticity>turbidity>conductivity> pH. Switching of the flow path is performed by a weir for an open water channel and a three-way valve or the like for a pipeline.

When an abnormal value is shown in the water quality obtained by the water quality monitoring device 60a located upstream of the water source, the time taken for the contaminated water to reach the intake facility 50b located downstream is calculated based on the water amount and depth. At that time, the water intake of the water intake facility 50b is temporarily stopped. If the water quality of the water intake facility 50a returns to the allowable range while the water intake facility 50b is stopped, the water intake is restarted. After that, similarly, when the water quality of the water intake facility 50b is improved, the water intake is restarted.

Contamination continues for a long time and water intake facilities 50a, 5
Reservoir 40a, 40
b) While the water storage capacity in the treatment facility or in the treatment facility can be used, those water storage volumes will be used. If the amount of stored water cannot be handled, the water quality of the water intake facility, 50a, 50b is compared, and the water with better water quality is taken. In addition, at the intake point, it will be more effective if a selective intake method is used in which the intake is selected using a water quality monitor.

According to the treatment apparatuses of the first and second embodiments, the water quality monitor is used to select the intake point and the water quality of the water source is monitored. The following effects can be obtained because the water is drained by switching between the two.

(1) Even if polluted water such as factory wastewater and dye wastewater is taken in, no load is applied to the water purification treatment facility.

(2) It is easy to deal with sudden polluted water.

(3) Since organic substances are constantly monitored, it is possible to select an intake point with good water quality.

(4) The effect of suppressing disinfection by-products such as trihalomethane is high.

FIG. 3 shows an intake water quality control device according to a third embodiment of the present invention. In this embodiment, the intake facility 50 is used.
Is the water intake tank 71 and the water intake tower 7 disposed in the water intake tank 71.
The intake tower 71 is provided with a water quality monitor 60.

That is, the water source water quality monitor 6 is installed in the water intake tower 72.
0 and a water sampling pump 61, and water sampling ports 62a to 62c for monitoring the water source water quality are installed upstream of each water intake point. Water from each water sampling port is sampled, and the water is pumped to a water source water quality monitor to continuously measure various water quality, and the measurement data is sent to the management section. This makes it possible to monitor the water quality near the intake in the management building, which can be useful for water quality management of the water source and selection of the intake. For water sampling, there are two methods: a method of fixing the water sampling port and a method of automatically changing the water sampling port in a short time. The former can continuously grasp the change in water quality at the same intake, and the latter can grasp the water quality in the depth direction of the intake tower. The water quality monitor of this embodiment is based on the drainage water quality monitoring station shown in FIGS. 5 to 7, and is improved according to the intake water quality.

Table 1 shows the main specifications of the water source water quality monitor.
Table 2 shows the water quality measurement items and ranges of the water source water quality monitor. Table 3 shows the measurement principle and calibration method. The main improvements are the deletion of residual chlorine and water pressure items from the measurement items, and the addition of an existing dissolved oxygen meter, turbidity, chromaticity, conductivity, UV absorbance,
This is the point that the measurement range of each item of water temperature was changed.

[0059]

[Table 1]

[0060]

[Table 2]

[0061]

[Table 3]

According to the intake water quality monitoring device of the third embodiment,
The following effects can be obtained.

(1) Seven items of turbidity, chromaticity, dissolved oxygen, pH, conductivity, UV and water temperature are automatically measured and output.

(2) The sensor part is easily attached and detached, and cleaning and replacement are easy, so maintenance is easy.

(3) Water quality data can be automatically measured and monitored remotely 24 hours online.

(4) By using the monitor panel of the flat display, it is possible to easily monitor the measurement / inside environment and change the maintenance set value.

(5) Equipped with automatic zero point calibration (turbidity meter, colorimeter) and self-diagnosis function, maintenance frequency can be reduced.

(6) By arranging all the electrical control-related equipment in the electrical control room in a centralized manner and completely separating it from the water quality measurement room of the piping / detection section for water quality measurement, corrosion of the electrical control related equipment can be prevented.

(7) A dehumidifier is provided to prevent dew condensation in the water quality measuring chamber.

(8) The outer wall of the board has a double plate structure, a heat insulating material is attached to the inner surface of the outer board, and a fan and a heater are installed in both the electric control room and the water quality measuring room, so that the temperature inside the board can be adjusted. .

The above is the operation and effect relating to the water quality monitor main body.

The following are actions and effects peculiar to the third embodiment.

(9) By installing a water intake at the intake of the intake tower, the raw water quality can be measured without water intake.

(10) By fixing the water intake port and measuring the water quality, it is possible to continuously grasp the change over time in the water quality at the same water intake port.

(11) A water intake is installed at the intake of the selective intake tower, the water intake is automatically changed, and the water quality is measured, whereby the water quality in the depth direction can be grasped.

(12) The best water intake can be selected from (10) and (11). The role of each water quality item in selecting the intake is shown below.

(12a) By continuously measuring the water temperature at each intake, it becomes possible to grasp the temperature stratification condition near the dam lake intake, which is useful for managing the intake selection.

(12b) By continuously measuring the DO at each intake, it is possible to grasp the anaerobic state of the bottom layer during the summer stratification period, and to estimate the elution of iron, manganese, etc. from the bottom mud. You can select an intake with less iron, manganese, etc. without waiting for the results of the water quality test.

(12c) The state of elution of bottom mud and circulation of water can be estimated by continuous measurement of conductivity.

(12d) It is possible to grasp the vertical distribution of pH by continuous measurement of pH, and it is possible to select a water intake in the pH range that does not interfere with the purification process. Therefore, the alkaline agent can be reduced in the water purification process. (During the circulation period,
The nutrient salts accumulated at the bottom in the stratification period are rolled up,
Phytoplankton increases and the pH difference between daytime and nighttime becomes significant. (12e) The continuous measurement of turbidity makes it possible to select an intake with less turbidity and reduce the turbidity load of water purification treatment.

(12f) By continuous measurement of chromaticity, it becomes possible to select an intake port with less chromaticity component which is difficult to be removed by existing water purification treatment.

(12 g) Continuous measurement of UV makes it possible to continuously estimate organic matter, and it is possible to select a water intake port with a small amount of organic matter.

In summary, (A) In the selective intake facility, install a sampling water inlet of the water source water quality monitor in the upstream portion of each intake.

(B) As a method of operating the intake water sampling monitor, a method of fixing the sampling port and continuously grasping a change in water quality of the same sampling port, and a method of automatically changing the sampling port automatically in the depth direction It should be a method to grasp the water quality condition.

(C) As the water source water quality monitor, use the one having an improved specification of the drainage water quality monitor station (the water source water quality monitor is a partial improvement of the distribution water quality monitor station, and the packaging is the same as the distribution water quality monitor). Therefore, the operation and effects of the above (1) to (12) are directly inherited.

[0086]

The present invention is as described above, and in the intake water quality control device, the intake point is selected using the water quality monitor, and the water source water quality is monitored. The flow path is switched and drained. In addition, the present invention provides a water intake in the depth direction by installing a water intake upstream of each intake in the selective intake facility.

Therefore, according to the present invention, it is possible to provide an intake water quality control device capable of obtaining test results quickly, easily achieving the water quality standard, and capable of good control.

[Brief description of drawings]

FIG. 1 is a block diagram of an intake water quality control device according to a first embodiment of the present invention.

FIG. 2 is a block diagram of an intake water quality control device according to a second embodiment of the present invention.

FIG. 3 is a block diagram of an intake water quality control device according to a third embodiment of the present invention.

FIG. 4 is a configuration block diagram of a main part of a water quality monitor according to an embodiment of the present invention.

FIG. 5 is a configuration diagram of a main part of a water quality monitor according to an embodiment of the present invention.

FIG. 6 is a block diagram of a control system used for controlling the water quality monitor according to the embodiment of the present invention.

FIG. 7 is a characteristic diagram showing a relationship between UV values of purified water and distribution water and THM (trihalomethane).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Pressure adjusting valve 2a ... 1st three-way switching solenoid valve 2b ... 2nd 3 way switching solenoid valve 3a ... 1st flow rate adjusting valve 3b ... 2nd flow rate adjusting valve 4a, 4b ... Filter 7 ... Solenoid valve 8 ... chemical solution tank 9 ... chemical solution injection pump 10 ... turbidity meter 11 ... cylindrical body 30 ... measurement processing section 31 ... low-pressure mercury lamp 32 ... optical separation splitter 33a, 33b ... photoelectric conversion element 34 ... amplifier 35 ... arithmetic unit A ... measurement system Flow path B ... Water flow cleaning system flow path C ... High pressure flush cleaning system flow path 40, 40a, 40b ... Flow path 50 ... Water intake facility 50a ... First water intake facility 50b ... Second water intake facility 60 ... Water quality monitor 60a ... 1 water quality monitor 62a-62 ... Water intake 70 ... Management tower 71 ... Control device 72 ... Arithmetic processing device 73 ... Water intake tower 74a-74c ... Water intake 80 ... Flow path switch 80a ... 1st flow path switch 80b ... Second flow path switching Bowl 110 ... water source

Claims (11)

[Claims] 1. A water intake facility for taking in water from a water source, a water quality monitor for measuring the water quality by using the water source water collected in the water intake facility as a water sample, and a flow disposed in a downstream side flow path of the water intake facility. From a path switching device and a management facility that performs a calculation process based on the water quality monitor water detection data and controls the flow path switching device based on the calculation processing result to switch the flow path of the water source water collected in the water intake facility. The monitor of the water quality, the measurement cell unit for flowing the test water, and the reference light by the light other than the test water irradiation light while irradiating the test water in the measurement cell unit with light to obtain a sample optical signal. An optical system that obtains a signal, and a measurement processing unit that calculates the estimated value of the inclusions in the test water by performing an arithmetic process based on the sample optical signal and the reference optical signal obtained by the optical system. Characteristic water quality monitoring device 2. A first water intake facility installed upstream of the water source for collecting the water source water, and a first water quality monitor for measuring the water source water collected by the first water intake facility as a test water, A first flow path switching device arranged in a downstream side flow path of the first water intake facility, a second water intake facility installed downstream of the water source for collecting water source water, and the second water intake facility Second water quality monitor for measuring the water source water sampled in the water as a sample water, a second flow path switching device arranged in a downstream side flow path of the second water intake facility, and the first water quality monitor Flow path switching control means for performing arithmetic processing based on the measured water data of the second water quality monitor and the water measured data of the second water quality monitor and controlling the first flow path switcher and the second flow path switcher based on the calculation result. A water intake management device characterized by being configured by. 3. The intake water quality control device according to claim 2,
An intake water quality control device having means for selecting an intake point by the flow path switching control means. 4. The intake water quality control device according to claim 2,
An intake water quality control device having means for switching and draining the flow path by the flow path switching means when the test water data of the first water quality monitor or the water test data of the second water quality monitor exceeds a set value. . 5. The water intake water quality control device according to claim 2, 3 or 5, wherein the monitor monitors the water quality and irradiates the measuring cell section for allowing the sample water to flow therethrough and the measuring water in the measuring cell section with light. An optical system that obtains a sample optical signal and obtains a reference optical signal by light other than the test irradiation light, and a sample optical signal and a reference optical signal obtained by the optical system are subjected to arithmetic processing to obtain a sample optical signal. An intake water quality control device comprising a measurement processing unit that calculates an estimated value of inclusions. 6. An intake facility for collecting water source water, and a water quality monitor for detecting water collected in the intake facility, wherein the source water taken by the intake facility is located upstream of the intake port of the intake facility. Intake water quality characterized in that a plurality of water quality monitor water intakes are provided at different depths, and the water quality is measured by using the water source water flowing through any one of the plurality of water intakes as the water intake. Management device. 7. A water intake facility for collecting water source water, and a water quality monitor for detecting water collected in the water intake facility. The water source water taken up by the water intake facility upstream of the water intake facility of the water intake facility. An intake water quality control device, characterized in that a plurality of water quality monitor water intake ports are provided at different depths and the water quality condition in the depth direction is measured by periodically selecting the plurality of water quality intake ports. 8. The intake water quality control device according to claim 3, 4, 6 or 7, wherein a light is supplied to the measurement cell part for allowing the monitor of the water quality to flow the sample water and the sample water in the measurement cell part. An optical system that obtains a sample optical signal by irradiation and a reference optical signal that is obtained by light other than the sample irradiation light; and an optical system that performs arithmetic processing based on the sample optical signal and the reference optical signal obtained by the optical system to perform the detection An intake water quality control device comprising a measurement processing unit that calculates an estimated value of inclusions in water. 9. The intake water quality control device according to claim 1, 5 or 8, wherein the measurement cell portion is formed of a cylindrical body that is arranged at a predetermined angle with respect to the horizontal direction, and the optical system is the The light emitting unit is arranged on the axis of the cylinder, and the light separating splitter is arranged between the light emitting unit and the cylinder, and the measurement processing unit receives the light separated by the light separating splitter. A first photoelectric conversion element that outputs a photoelectric conversion signal, and a second photoelectric conversion element that receives the light emitted through the sample water in the cylinder through the light separation splitter and outputs a photoelectric conversion signal, An intake water quality control device comprising an arithmetic unit that performs arithmetic processing based on the photoelectric conversion signals of the first and second photoelectric conversion elements. 10. The intake water quality control device according to claim 1, 3, 5 or 8, wherein the water quality monitor further injects a chemical cleaning agent into the measurement cell section and allows the cleaning agent to stay therein for a predetermined time, and A chemical cleaning agent system path for separating the dirt component, a high-pressure flush flow path for cleaning and discharging the separated dirt component in the measurement cell, and a measurement cell washed with turbulent water from the high-pressure flash flow path. An intake water quality control device having a measurement system flow path for injecting test water to be inspected. 11. The water intake quality control device according to claim 10, wherein the chemical cleaning path is constituted by a chemical solution tank for storing a hydrochloric acid solution and a chemical solution injection pump for injecting the hydrochloric acid solution in the chemical solution tank into the measurement cell. A water intake water quality control, characterized in that the measurement system flow path is configured by an electromagnetic valve for allowing a test water to flow through the measurement cell section, and a flow rate adjustment valve arranged between the electromagnetic valve and the measurement cell section. apparatus.