JP2003305454A - Intake water quality controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intake water quality controller which can obtain an experimental result immediately, easily achieves the water quality standard and enables satisfactory control. <P>SOLUTION: Intake plants are disposed respectively on the upstream and the downstream of a water source, test water taken out at each intake plant is sent to each water quality monitor, water quality is measured there, the water quality is arithmetically processed by an operation processor and the changeover of a flow passage of the intake water by the use of a flow passage changer or the selection of water intake point is performed in accordance with the result of the arithmetic operation. <P>COPYRIGHT: (C)2004,JPO

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.

In Patent Document 1, a plurality of water quality detection sensors are provided in a water depth direction in a water intake tower, and water is taken from a gate of a sensor closest to preset optimum data among data detected by the sensors. It is disclosed.

In Patent Document 2, COD. BOD. TOC
It is described that the concentration of the suspended substance and the organic substance index are measured from the attenuation coefficient of the suspended substance in the sample by ultraviolet light or near infrared light in order to measure the organic substance index such as.

Patent Document 3 describes that the inner wall of the measuring pipe of the water quality measuring instrument for optically measuring the water quality characteristic is reciprocated with a predetermined stroke to scrape off the dirt.

[0010]

[Patent Document] 1. Japanese Utility Model Publication No. 58-90219 2. Japanese Examined Patent Publication No. 60-38654 3. Japanese Utility Model Publication No. 57-135948

[0011]

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 matter 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 coloring water such as dyeing wastewater is mixed in rivers, the coloring water is taken and flows into a storage pond or landing well to impose a burden on the water treatment facility, or at worst the water in the storage pond should be discarded. I won't. (3) Water intake operations from rivers, etc. are managed only by the amount of water intake, and no water intake point is selected considering the water quality at the water intake point, so a good water intake point could not be selected, and reliability was lacking.

The present invention has been made in view of the above-mentioned 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.

[0014]

The first aspect of the present invention is to install a first water intake facility installed upstream of a water source for collecting water source water.
A first water quality monitor that measures the water source water collected in the first water intake facility as a sample water; a first flow path switcher disposed 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 the water source water, a second water quality monitor for measuring the water source water collected by the second water intake facility as a test water, and the second water intake A second flow path switching device arranged in the downstream side flow path of the facility, an arithmetic processing based on the water detection data of the first water quality monitor and the water detection data of the second water quality monitor, and based on the operation result. To the first flow path switching device and the second
And a flow path switching control means for controlling the flow path switching device.

A second aspect of the present invention is characterized in that the water intake quality control device has means for performing the flow path switching control means.

In a third aspect of the present invention, when the water measurement data of the first water quality monitor or the water measurement data of the second water quality monitor exceeds a set value, the flow passage switching means switches the flow passages for draining. It is characterized by having means.

A fourth aspect of the present invention is that the water quality monitor is
A turbidimeter for measuring measurement items including turbidity, chromaticity, and UV absorption of the test water introduced through the measurement system flow path, and at least UV absorption from the test water flowing into the turbidity meter. And a measurement processing unit that detects a value, and the measurement processing unit irradiates the sample water in the measurement cell section of the turbidity meter with light to obtain a sample optical signal, and uses light other than the sample irradiation light. An optical system that obtains a reference light signal, and a calculator that performs calculation processing based on the sample light signal and the reference light signal obtained by the optical system, and is configured to calculate an estimated value of the inclusions in the test water. And a chemical liquid cleaning system flow path for supplying a chemical liquid from the chemical liquid tank to the turbidity meter for cleaning, and a water flow cleaning system flow path for supplying cleaning water to the turbidity color meter for cleaning. It is characterized by being composed of and.

In a fifth aspect of the present invention, in each of the water quality monitors, the measuring cell portion of the turbidity meter comprises a cylindrical body which is arranged at a predetermined angle with respect to the horizontal direction, and the optical system comprises , A light emitting section arranged on the axis of the cylindrical body, and a light separating splitter arranged between the light emitting section and the cylindrical body, wherein the measurement processing section is the light separated by the light separating splitter. A first photoelectric conversion element that receives the light and 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. And a computing unit for computing based on the photoelectric conversion signals of the first and second photoelectric conversion elements.

In a sixth aspect of the present invention, each of the water quality monitors further comprises a chemical cleaning agent system passage for injecting a chemical cleaning agent into the measuring cell portion and allowing it to stay for a predetermined time to remove dirt components in the measuring cell. And a high pressure flush flow path for washing out the separated dirt components in the measurement cell, and a measurement system for injecting test water to be inspected into the measurement cell washed by the turbulent water from the high pressure flush flow path. It is characterized by having a flow path.

In a seventh aspect of the present invention, the chemical cleaning route is constituted by a chemical 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, and the measurement system flow path. Is characterized by being constituted by an electromagnetic valve for allowing the test water to flow through the measurement cell section and a flow rate adjusting valve arranged between the electromagnetic valve and the measurement cell section.

An eighth aspect of the present invention is characterized in that the measurement items of each water quality monitor are turbidity, chromaticity, dissolved oxygen, pH, conductivity, ultraviolet absorption and water quality.

[0022]

1 is a block diagram of an intake water quality control device showing an embodiment of the present invention. In FIG. 1, reference numerals 50a and 50b denote first and second intake facilities, respectively. Water is taken from a water source 110 such as a river or lake through the pipes 40a and 40b. 60a and 60b are provided in the first and second water intake facilities, and continuously measure pH, water temperature, conductivity, chromaticity, turbidity, ultraviolet absorption (UV), and dissolved oxygen (DO).

Reference numerals 80a and 80b are first and second flow path switching devices, 90a and 90b are first and second reservoirs, and 100 is a water purification treatment facility having a management facility 70, and the management facility 70 is It is provided with a control device and an arithmetic processing unit.

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 disposed on the downstream side of the water source 110 and supplies the water intake to the water purification facility 100 through the second flow path switching unit 80b and the second reservoir 90b.

FIG. 2 shows an example of a water quality monitor. In FIG. 2, 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. 2, 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. Path B is formed. Further, an electromagnetic valve 7 is provided between a downstream stage of the pressure adjusting valve 1 and the first three-way switching electromagnetic valve 2a and a turbidity meter 10 described later to form a high pressure flush cleaning system path C. . Furthermore, 6 is a flow meter, 2
b 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. The second three-way switching solenoid valve 2b, the chemical liquid tank 8 and the chemical liquid injection pump 9 form a chemical liquid cleaning system flow path D.

Reference numeral 30 is a measurement processing unit which receives the reference signal R relating to UV and VIS and the sample signal relating to UV and VIS. FIG. 3 shows a schematic configuration of the measurement cell section of the turbidity meter 10 and the measurement processing section 30. 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 side surface of one end, and a sample water outlet 13 is provided on the other side surface of the end. A measurement window 14a is provided at one opening end of the cylindrical body 11,
A measurement window 14b is provided at the other opening end.

Further, as shown in FIG. 3, a low-pressure mercury lamp 31 which is a light emitting portion located on the axis of the cylindrical body 11 is arranged in the vicinity of the measurement window 14a, and between the measurement window 14a and the low-pressure mercury lamp 31. 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 monitoring device 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 measuring cell section of the turbidity meter 10 to wash the measuring 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 dirt 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. 4, 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 set to 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 the adhered chromaticity components of total manganese and total iron, which 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 that realizes a turbulent flow state. (3) In a series of chemical liquid cleaning operations, a control device (sequencer) and a touch panel can be used to automatically operate control devices such as a solenoid valve and a 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 changed on the touch panel graphic display, and the cleaning operation can be monitored graphically. (5) Maintenance intervals can be significantly extended (more than 3 months), and maintenance costs can be reduced. (6) The maintenance interval can be significantly extended by combining chemical cleaning and periodic zero-point calibration of the turbidity meter. (7) The main cleaning is more effective than the wiper cleaning or the jet water cleaning alone. (8) Since the rotating part of the wiper cleaning does not exist in the cleaning method, 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 section 30 as shown in FIG. As shown in FIG. 5, the UV signal of purified water (254 nm
Since a high correlation was obtained between the absorbance of (3) and the amount of trihalomethane, a low-concentration UV meter having a function of estimating the amount of trihalomethane by applying a UV signal is provided.

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
UV signal (absorbance at 254 mm (Ab
is)) and VIS signal (absorbance at 546 nm (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.

Low-pressure mercury lamp 31 (254 nm) as a light source
And the light emitted from the 546 nm wavelength output) are transmitted to the reference light (UV, V) by the light separation slitter 32 before entering the measurement cell.
IS)) and sample light (UV, VIS) after passing through the measurement cell is measured. The reference light is photoelectrically converted by the photoelectric conversion element 33a and the amplifier 3
4, and the sample light is input to the photoelectric conversion element 3
It is photoelectrically converted by 3b 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 based on these signals to obtain UV values,
Output the VIS value and TTHM estimated value.

According to the water quality monitor used in the present invention, the following effects can be obtained. (1) The UV signal and the turbidity signal are continuously measured, and the trihalomethane amount can be continuously estimated from the correlation formula of the UV signal or the turbidity-corrected UV signal and the trihalomethane amount. (2) At the same time, it is 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) Maintenance cycle can be extended (3 months or more) because it has an automatic zero point calibration function and a chemical cleaning function. (4) A series of automatic zero point calibrations and chemical cleaning operations are performed by the control device (sequencer) and touch panel, and automatic operation is possible. (5) The measurement cell has a flow cell format, and the measurement cell is 1
Since it is as long as 00 mm, it is possible to measure a low concentration UV value. (6) Since the reference light signals (UV, VIS) are separated before the light enters the measurement cell, even if the output of the low pressure mercury lamp fluctuates, it is not affected.

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 it satisfies the above conditions.

Next, the operation of the water intake control device of the present invention shown in FIG. 1 will be described. The first water intake facility 50a is disposed upstream of the water source 110 such as a river, and has a first flow path switching unit 80.
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.

Water quality monitor 60 of water intake facility 50a, 50b
With a and 60b, the water quality of the raw water taken in is constantly monitored, and the water quality signal is constantly sent to the management tower. 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 the water quality obtained by the water quality monitoring device 60a located upstream of the water source shows an abnormal value, the time taken for the contaminated water to reach the intake facility 50b located downstream is calculated from 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.

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, and 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, the addition of an existing dissolved oxygen meter, and the change of the measurement range for each item of turbidity, chromaticity, conductivity, UV absorbance, and water temperature. That is the point.

[0044]

[Table 1]

[0045]

[Table 2]

[0046]

[Table 3]

According to the above-described processing apparatus, the water intake point is selected using the water quality monitor, the water source water quality is monitored, and when the set value upper limit is exceeded, the flow path is switched to drain the water. The following effects can be obtained. (1) Even if polluted water such as factory wastewater and dyeing wastewater is taken in, it does not burden the water purification facility. (2) It is easy to deal with sudden polluted water. (3) Since organic substances are constantly monitored, water intake points with good water quality can be selected. (4) Highly effective in suppressing disinfection by-products such as trihalomethane. (5) Seven items of turbidity, chromaticity, dissolved oxygen, pH, conductivity, UV and water temperature are automatically measured and output. (6) The sensor part is easily attached and detached, and cleaning and replacement are easy, so maintenance is easy. (7) Water quality data can be automatically measured and monitored remotely 24 hours online. (8) By using the monitoring panel of the flat display, it is possible to easily monitor the measurement and the environment inside the panel and change the maintenance setting value. (9) Equipped with automatic zero point calibration (turbidity meter, colorimeter) and self-diagnosis function, maintenance frequency can be reduced. (10) By arranging all the electrical control-related equipment in the electrical control room and completely separating it from the water quality measurement room of the piping / detection section related to water quality measurement, corrosion of the electrical control related equipment can be prevented. (11) A dehumidifier is provided to prevent dew condensation in the water quality measurement room. (12) The outer wall of the panel has a double plate structure, a heat insulating material is attached to the inner surface of the outer panel, 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 panel can be adjusted.

[0048]

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.

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

FIG. 3 is a configuration diagram of a main part of a water quality monitor according to an embodiment of the present invention.

FIG. 4 is a block diagram of a control system used for controlling the water quality monitor according to the embodiment of the present invention.

FIG. 5 is a characteristic diagram showing a relationship between UV values of purified water and distribution water and THM (trihalomethane).

[Explanation of symbols]

1 ... Pressure control valve 2a ... first three-way switching solenoid valve 2b ... second three-way switching solenoid valve 3a ... first flow rate adjusting valve 3b ... second flow rate adjusting valve 4a, 4b ... Filter 7 ... Solenoid valve 8 ... Chemical tank 9 ... Chemical injection pump 10 ... turbidity meter 11 ... Cylinder 30 ... Measurement processing unit 31 ... Low-pressure mercury lamp 32 ... Optical splitter 33a, 33b ... Photoelectric conversion element 34 ... Amplifier 35 ... arithmetic unit A ... Measuring 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 intake facility 60 ... Water quality monitor 60a ... first water quality monitor 62a-62 ... Water sampling port 70 ... Management tower 80 ... Flow path switching device 80a ... first flow path switching device 80b ... Second flow path switching device 110 ... water source

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G01N 21/33 G01N 21/33 33/18 33/18 A B C D Z 106 106A 106E 106Z F term (reference) ) 2G059 AA01 BB05 CC12 CC19 DD12 EE01 EE11 FF10 GG05 HH02 HH03 HH06 JJ22 KK03 MM01 NN07

Claims (8)

[Claims] 1. 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. An intake water quality control device characterized by being configured by. 2. The intake water quality control device according to claim 1, wherein the intake water quality control device includes means for performing the flow path switching control means. 3. When the water detection data of the first water quality monitor or the water detection data of the second water quality monitor exceeds a set value,
The intake water quality control device according to claim 1 or 2, further comprising means for switching the flow path by the flow path switching means and discharging the water. 4. The water quality monitor is a turbidity meter for measuring measurement items including turbidity, chromaticity, and ultraviolet absorption of the test water introduced through a measurement system flow path, and the turbidity meter. It has a measurement processing unit that detects at least an ultraviolet absorption value from the test water that has flowed into the colorimeter, and the measurement processing unit irradiates the test water in the measurement cell unit of the turbidity meter with light to sample light. An optical system that obtains a signal and a reference light signal by light other than the test irradiation light, and a calculator that performs a calculation process based on the sample light signal and the reference light signal obtained by the optical system It is configured to calculate an estimated value of inclusions in water, and a chemical liquid cleaning system flow path for supplying chemical liquid to the turbidity meter from a chemical liquid tank for cleaning, and cleaning water to the turbidity meter. A special feature is that it is configured with a water flow cleaning system flow path for supplying and cleaning. The intake water quality control device according to claims 1 to 3. 5. In each of the water quality monitors, a measuring cell section of the turbidity meter comprises a cylindrical body which is arranged at a predetermined angle with respect to a horizontal direction, and the optical system comprises the cylindrical body. The measurement processing unit receives the light separated by the light separation splitter and photoelectrically converts the light separation unit arranged on the axis line and the light separation splitter arranged between the light emission unit and the cylindrical body. A first photoelectric conversion element that outputs a conversion signal; 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; The intake water quality control device according to any one of claims 1 to 4, wherein the intake water quality control device comprises an arithmetic unit that performs arithmetic processing based on photoelectric conversion signals of the first and second photoelectric conversion elements. 6. Each of the water quality monitors further comprises a chemical cleaning agent system path for injecting a chemical cleaning agent into the measuring cell section and allowing it to stay for a predetermined time to remove dirt components in the measuring cell, and the measuring cell. And a measurement system flow path for injecting the test water to be inspected into the measurement cell washed by the turbulent water from the high pressure flush flow path. The intake water quality control device according to any one of claims 1 to 5. 7. The chemical solution cleaning path comprises 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, and the measurement system flow path is provided with the test water. The intake water quality control device according to any one of claims 1 to 6, wherein the intake water quality control device is configured by an electromagnetic valve that allows the measurement cell unit to flow, and a flow rate adjustment valve that is disposed between the electromagnetic valve and the measurement cell unit. 8. The measurement item of each water quality monitor is turbidity,
The intake water quality control device according to any one of claims 1 to 7, wherein chromaticity, dissolved oxygen, pH, conductivity, ultraviolet absorbance and water quality.