JPH0871574A - Method and apparatus for controlled operation of ozone water purifying facility - Google Patents

Abstract

PURPOSE: To provide a method and apparatus for the controlled operation of an ozone water purifying facility in which water temperature characteristic values, water quality characteristic values, ozone injection rate values, treatment water quantity values, necessary ozone quantity values, and the actuation values of ozone generation values of more than one unit are displayed together on CRT so that the data can be easily seen, and used easily by an operator. CONSTITUTION: An ozone injection rate 16C is obtained from water temperature 11 and water quality 12, the necessary quantity of ozone 17B is calculated from the quantity of treatment water, a power adjustment rate is obtained by obtaining a necessary ozone quantity Ox point and an intersection 0Zx from the relation between the number of units of an ozone generator and a power adjuster 14 so that parallel operation conditions are constituted. A proper ozone injection rate is controlled by the fine adjustment of the 0Zx point from the output of an effective ozone control part 13, from a corrective adjuster 17C, and the present values of these correlation diagrams and the histogram of the past data are displayed on the same CRT scope to facilitate operation monitoring by an operator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control operation apparatus and method for an ozone water purification facility, and in diffusing an appropriate amount of ozone to an ozone contact pond, the ozone temperature is adjusted according to the water temperature, water quality, and amount of treated water in the pretreatment facility. The operating conditions (number of units and operating power%) of multiple ozone generators are commanded using the injection rate calculator, and the operating conditions are calculated by the effective ozone amount calculator based on the amount of ozone discharged from the ozone contact tank and activated carbon adsorption tank. The present invention relates to a control operation apparatus and a method thereof in which feedback for correction and adjustment is performed, and these operation control states are displayed on a CRT on a single screen so that an operator can easily see the entire process system.

[0002]

2. Description of the Related Art Chlorine-free bleaching of chemical pulp, cleaning process of semiconductor equipment, etc.
Secondary treatment of industrial wastewater, deodorization and sterilization of water and wastewater facilities.

In the case of large-scale processing, these are generally controlled by using a plurality of ozone generators.
The economics of controlling the number of operating ozone generators are described in Japanese Patent No. 14403 and Japanese Patent Laid-Open No. 55-126506.

On the other hand, in recent years, in a large-scale plant with a treated water capacity of 500 to 1 million tons per day in a water purification facility, an ozone contact pond which diffuses a large amount of ozone of 30 to 80 kg per hour is added to deodorize and sterilize. Has started making delicious water.

Conventionally, water purification plant facilities have been operated by a 24-hour working system by a central monitoring centralized control panel, and the main business is mainly to operate pumps, monitor the amount of treated water and water level, and check offline water quality of distribution reservoirs. I was there.

[0006]

Furthermore, by making the ozone contact pond an additional process, it becomes an ozone chemical reaction process such as an ozone generator, a power panel, an ozone contact pond and an activated carbon adsorption pond, and it is desired to unify the control operation. It is rare. Also,
The ozone generator has an ozone generation efficiency of about 5% (others are cooled as waste heat), and there is a demand for automation of proper operation management in order to reduce running costs.

An object of the present invention is to provide a user-friendly control operation device for an ozone water purification facility, which allows an operator to recognize the operating states of a plurality of ozone generators at a glance.

[0008]

A control and operating apparatus for an ozone water purification facility according to the present invention diffuses raw water from ozone from a plurality of ozone generators into an ozone contact basin and also supplies water to the input side water channel of the ozone contact basin. A water quality ozone injection rate calculator for determining the ozone injection value corresponding to the measured values of the water temperature meter, the water quality meter and the flow meter installed in the water channel of the input side, and the water quality ozone injection rate Calculate the treated ozone from the output value of the computing unit, and determine the operating number of multiple ozone generators based on the ozone generation group unit operation table. Input the ozone contact amount that gives an operation command to the ozone generator, injects the generated total amount of ozone and diffuses it, and the amount of ozone exhaust from the ozone contact reservoir and the activated carbon adsorption reservoir. It is equipped with an effective ozone amount calculator that determines whether or not the output value from the effective ozone amount calculator is the input value of the correction adjuster that adjusts multiple ozone generators to the operation number control calculator and This is to display the measured values necessary for the operating values of the plurality of ozone generators on the CRT to which the output values of the unit control calculator are input.

[0009]

[Function] For the CRT, for example, the water temperature characteristic value as the operation value,
The water quality characteristic value, ozone injection rate value, treated water amount value, required ozone amount value and operating values of multiple ozone generators are displayed collectively, so the operator can easily see and operate.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 shows a control device of an ozone water purification facility.

In the water channel, a pretreatment facility 2, an ozone contact basin 4, and an activated carbon adsorption basin 5 are sequentially arranged from the raw water 1 from the input side to the output side.

The pretreatment facility 2 is a landing well 2A and a coagulation sedimentation basin 2.
B, and the measured values of the water temperature meter 11, the water quality meter 12, and the flow meter 3 provided in the water channel 1 of the ozone contact pond 4 and the landing well 2A are input to the process amount input device 13 to calculate the water quality ozone injection rate calculator. Output to 16.

The water quality ozone injection rate calculator 16 converts the measured value of the water quality ozone injection calculator 16B and the reference value 16A and inputs the ozone injection rate amount to the operating number control calculator 17 from the ozone injection rate output device 16C. .

When the ozone injection rate amount is input, the operating unit control calculator 17 inputs the treated water amount and the required ozone amount (17 in FIG. 2).
B) and the number of operating ozone generators 8 according to
Power is controlled at 7A. The correction adjuster 17C finely adjusts the electric power of the ozone generator 8 and inputs it to the calculator 17A.
On the other hand, the operation table 17B for converting the ozone generation amount and the electric power adjustment amount with respect to the number of ozone generator 8 groups is input to the calculator 17A.

The output signal from the operating number control computing unit 17 is an auxiliary device 8A which constitutes the ozone generator 8 by the site panels 9A and 9B arranged via the control output unit 14 and the operation panel 10.
And input to the ozonizer 8B.

An ozone flow meter 4B and an ozone concentration meter 7A, which are provided in a pipe during which ozone output from a plurality of ozonizers 8B diffuses into the ozone contact basin 4, an ozone discharge device 6A from the ozone contact basin 4 and activated carbon. The measured values of the exhaust ozone meters 7B and 7C that detect the exhaust ozone from the adsorption basin 6B are input to the effective ozone amount control unit 18 via the ozone amount input device 15.

The effective ozone amount controller 18 inputs the measured value to the effective ozone amount calculator 18B. Effective ozone amount calculator 1
8B is the reference device 1 based on the detected value from the difference between the ozone flow meter 4B, the ozone and concentration meter 7A, and the exhaust ozone meters 7B to 7C.
Convert at 8A. The appropriate value for the reference device 18A is that the ozone concentration meter 7A− [exhaust ozone meter 7B + exhaust ozone meter 7C] = constant (20%). That is, when the effective ozone is 80% and the exhaust ozone is 20%, it is an appropriate value, and the ozone adjuster 18C is instructed by increasing or decreasing the appropriate value.

The ozone adjuster 18C sends a command to the corrector 17C to output zero when appropriate, decrease ozone power when plus (+), and increase ozone power when minus (-). As a result, the increase / decrease instruction of the ozone power of the ozone generator 8 is transmitted via the control output device 14-the operation panel-the site panel 9B.

Here, the effective ozone amount is the treated water amount Q3.
On the other hand, in the ozone contact pond 4, the amount of ozone released from the air diffuser 4A (the ozone flow meter 4B and the ozone concentration meter 7
A) chemically reacts with organic pollutants in the treated water, and the amount of residual ozone rises and stays in the upper sealed space of the ozone contact basin 4, so it is sucked from the fan of the exhaust ozone device 6A
_In the process of decomposing ozone into ozone by the _n O ₂ catalyst and releasing it into the atmosphere, it is detected by the exhaust ozone meter 7B at the inlet. That is, if the difference between the ozone concentration meter 7A and the exhaust ozone meter 7B is constant, an appropriate amount of ozone is diffused.

Further, although the activated carbon adsorption basin 5 is shown as two tanks, the treated water filtered with activated carbon on the left side reaches the distribution reservoir 7. However, when it is clogged with dust over time, it is switched to the right side and filtered with activated carbon, and the left side is sprayed with water and air in opposite directions (upward in the figure) by a backwashing device (not shown) to remove dust. Since the amount of discharged ozone is pushed out by the pressure, it is decomposed into ozone through the activated carbon of the discharged ozone device 6B and released to the atmosphere. Therefore, if the discharged ozone meter 7C is arranged on the input side and is constant with respect to the reference value, It can be seen that proper residual ozone is flowing to the activated carbon adsorption basin 5.

Therefore, the effective ozone amount control section 18 determines that 7A- [7B + 7C] is constant as an appropriate value.

The display data is given to the CRT display device 20 via the storage device 19. The storage device 19 has a water ozone injection rate calculator 16 and an operating unit number control calculator 17.
The data signal of the effective ozone amount control unit 18 is input, a part of the data signal is stored, and the current value is output to the CRT display 20.
Part of the stored data is a function that can be output as a matching frequency graph by accessing from the CRT display side.

FIG. 2 shows an example of a screen display pattern of the CRT display 20 in the above-mentioned apparatus configuration of FIG.

The frequency graph 29 of FIG. 2 will be described.
11 is a water temperature characteristic diagram, 12 is a water quality characteristic diagram, and 16C is an ozone injection rate characteristic diagram. These characteristic diagram vertical axes A ', B',
C'and D'indicate four season changes from summer x1 to winter x2. Water temperature characteristics FIG. 11 shows that the water temperature rises from winter × 2 to summer × 1 and the water quality in the water quality characteristics chart 12 deteriorates.
D'is an index for increasing the ozone injection amount to purify the water quality.

In the frequency graph 29, the alternate long and short dash line indicates the tendency pattern, and the solid line (bar graph) indicates the frequency pattern of past data.

The water temperature from the water temperature gauge 11, the water quality from the water quality meter 12 and the ozone injection rate 16C are shown by the current values, and the frequency graph values (bar graph display) are stored in the storage device 19 in the past. By displaying them as a record in an overlapping manner, the present to past situations (which may be displayed in different colors to classify the item contents) can be easily understood at a glance.

The water quality of the water quality meter 12 is BOD (demand for biological oxygen), the amount of ammonia nitrogen, and the like.

Further, the dotted line graph shows that there is a water quality change depending on the water temperature and the correlation in which the ozone injection rate is given depending on the water quality change. In the four seasons change, the frequency graph shows the central part (spring / fall). ), The frequency is lower in winter and higher in summer.

On the other hand, required ozone amount (kg / Hr) = treated water amount Q [m ³ / Hr] × ozone injection rate (mg / l) × 0.00
Since it is given by 1, for example, the ozone injection rate 16C is ×
When the amount of treated water is 1.5 when the mark is 1.5, the required ozone amount is Ox.

Here, in the treated water amount, the bar graph on the EE 'axis is a past treated water amount frequency graph, and when the treated water amount decreases from Q ₁ to Q ₂ due to partial stoppage of the dividing pond for maintenance. Is the frequency of. The [Q ₁ -Q ₁ ′] characteristic is the relationship between the ozone injection rate (OD characteristic) and the required ozone amount [OF and GG ′ characteristic] obtained from the above-mentioned calculation formulas for the same amount of treated water. It becomes a relationship diagram.

The graph of the number of ozone generators 8 at this time is [100%-
i] Characteristics. The [O-H] characteristic is obtained by varying the percentage of the power regulator of the ozone generator 8 from 5 to 100 (%) to obtain a proportional ozone generation amount, and when 100 (%), the rated ozone generation amount is obtained. .

Therefore, regarding the required ozone amount at the Ox point, the intersection of OZx indicates the operating condition of each ozone generator, and in the figure, it is 5
It shows that 6 ozone generators should be operated at 0% power adjustment value. If the power adjustment 5 to 100 (%) is given to the operation panel 10 in FIG. 1, it is controlled by the inverter 8-8 in the field panel 9 in FIG. 5 described later.

The [O-j] characteristic shows a history of the number of times the ozone generator 8 has been operated by showing a past operation frequency graph for each of the six ozonizers.

The [Ok] characteristic is the ozone adjusting output device 18C.
Since the operation output (increase / decrease) of the frequency graph history and the present value are displayed, the operator can grasp at a glance the proper value control state of + or-for the ozone injection rate 16C.

FIG. 3 shows an example of the contents of the operating number control computing unit 17 for performing the proper combination of the power regulators 14.

That is, although it is displayed in the log-log characteristic diagram, the way of viewing the graph will be described. On the vertical axis i, there are six ozone generators of Nos. 1 to 6 having the same rating [especially the rated ozone generation amount of the power adjustment value 100 (%) is obtained, and the required ozone amount characteristic GG of FIG. In order to continuously and variably follow ′, a combination of sawtooth waves such as 14A is used. In other words, when operating only No. 1, set the power regulator to 50 (%)
→ Rise to 100 (%) and generate rated ozone amount when 100 (%).

Further, when increasing the number, No. 2 is operated, but in order to make the GG 'characteristic linear, No. 2 and No. 2 are required.
When 1 and 50 are simultaneously returned to the operating state of 50 (%) and the amount of ozone generation is increased, the power adjustment value is set to 50 (%) → 100.
(%) Rises, and when it is 100 (%) or more, No. 3 is also operated in parallel, but the power adjustment value is 70 (%) No. 1-3.
By decreasing the total amount and then gradually increasing, the parallel operation of up to 6 units can directly obtain the [(G)-(G ')] characteristic. These will be further described in detail with reference to FIG.

In the operating method 14A, the Ox point command is the intersection point O.
It becomes Zx, and it is sufficient to carry out parallel operation for three generations with the power adjustment value 71 (%) indicated by the cross point X of No. 3 to 1 on the lower side.

In the operating method 14B, by setting the output of the electric power regulator applied to the ozone generator 8 to the upper limit of 90 (%),
In the case of preventing the deterioration of the glow discharge tube and operating for a long life, it is controlled so that No. 1 to 5 are 90 (%) upper limit combination and 100 (%) only when the maximum value of G command. The Ox point command becomes the OZx point, and the No.
It is sufficient to operate three units in parallel with the power adjustment value 78 (%) indicated by the intersection X mark of 3 to 1.

In the operating method 14C, since the operating efficiency of the ozone generator 8 is designed to be 60 to 90 (%),
No. 1 to 5 are ozone generators with the same rated value, and No. A1
A2 is the same as the diagram of the combination with an ozone generator of 1/2 rated value, and in order to raise the lower limit of the power adjustment value from 14B, No. 1, No. A1, No. 2 and No. .3 ~ No.
No. 3, No. 2, N at 70 (%) value by the Ox point command by the combination of No. 5 and No. A2.
It is sufficient to operate o.A1 and No.1 in parallel. These 14
Since all of A to 14C are given as initial conditions, they are replaced by the power regulator 14 and the i characteristic diagram of FIG. 2, and the parallel operation state is the intersection of the intersection of the OZx points and the number of vehicles No. alternating with the lower side. Since the mark is displayed, the operator can grasp the operating state at a glance.

FIG. 4 is a detailed view of the combined construction of the ozone generator group, and FIG. 5 is a detailed view of the internal construction of the ozone generator.

First, the configuration of FIG. 4 has the ozone generator 8 of FIG.
The following shows the contents of No. 1 to 6, which can be operated in parallel with 6 units, and consists of an auxiliary machine 8A and an ozonizer 8B.
The gas is once collected in the collecting pipe 22 via 1 and the ozone gas is discharged from the diffuser pipe 4A of the ozone contact reservoir 4.

This ozone concentration 7A and ozone gas flow rate 4
With B, the amount of ozone discharged from the ozone discharge device 6A is measured by the ozone concentration meter 7B. The solenoid valve 21 is "opened" according to the number of operating ozonizers 8B.

In FIG. 5, the structure of the auxiliary machine 8A is for obtaining the pressure of the diffuser pipe 4A by the blower 8-1 for taking in the raw material air, and since it is adiabatically compressed, it is cooled for dehumidification and drain removal. There is also a container 8-2, and a dryer 8-3 for drying compressed air, which is a dry air having a dew point of -50 ° C. at the outlet and is passed through a filter 8-4 on the ozonizer 8B side to form a glow discharge gap. When passing through the box 8-5, ozonized air [O ₂ + O ₃ ] is generated and output.

In these units, unnecessary parts must be subjected to waste heat treatment for efficiency. Therefore, the auxiliary machine 8A side uses the cooling water pump 8-10, and the ozonizer 8B side uses the indirect cooler 8-6 (heat exchanger HEX and heat exchanger HEX). Heat is exhausted by the cushion tank and pump P ₂ ).

Further, since the dryer 8-3 is a cylinder made of a desiccant, it is switched from DRYA to DRYB when a certain amount of moisture is absorbed.
Use the side. At this time, on the DRYA side, the heater is dried by the regenerator in the site panel 19A to perform dehumidification processing. Due to this switching, DRYA and DRYB alternate for about 8 hours, so under hot standby conditions, dryer 8
-3 must be ready for start-up in response to a command from the site board 19A. This is because the blower and cooler start up faster according to the command.

In the power adjustment of the ozonizer, when the control signal Sig i is received from the operation panel, the power adjustment control of the inverter (INV) 8-8 is performed through the control unit (CE) 8-9 to control the high voltage transformer (TR) 8-. From 7, pressure is increased to a box 8-
5 to the glow discharge tube, the glow discharge tube generates a uniform glow discharge within a cylindrical gap of about 2 mm, and when clean dry air flows in through the filter (F ₀ ) 8-4,
Converted to ozonized air. That is, the intensity of the glow discharge can proportionally change the amount of ozonized air, and generally has a control ability of 5 to 100%.

However, as shown in FIG. 6, the ozone generator 8
In the operating sequence, first, the auxiliary machine 8A side is started by Sig a, then the indirect cooler 8-6 is started by Sig P, and then the glow discharge is started by Sig i. Since about 20 (%) of the rated power is further consumed by the indirect cooler 8-6, 38 (%) continues to be consumed due to the preparation for the negative operation. In addition, from 5 to 100 in proportion to the output of ozonized air in the glow discharge system from Sig i
(%) Since power output is adjusted, approx. [100-38] = 62
(%) Is the power consumption for ozone output.

Therefore, 5 to 100 of the power regulator 14
(%) Is the variable range, power consumption at 50 (%) is 6
It becomes 9 (%), and it can be seen that the electric power that contributes to ozone generation works more effectively when the ozone output is 50 (%) or more.

This is also one of the reasons why it is more effective to use the operating condition of the power regulator 14 described above with reference to FIG. 3 not to be 5 (%) to 30 (%) but to be 50 (%) or more.

As described above with reference to FIG. 1, the actual operating conditions are changed in four seasons and the ozone injection rate is changed.
Although the operating conditions of the number of ozone generators correlate with changes,
Minimizing the power consumption of the auxiliary machine 8A directly leads to running costs as energy saving.

Therefore, it can be expressed as shown in Table 1.

[0053]

[Table 1]

In Table 1, [A] corresponds to the preparation of a request for increasing the required ozone amount when the operation of the ozonizers 8B ₁ and 8B ₂ of Nos. ₁ and ₂ is sufficient for the required ozone amount Ox value. In order to do so, if only the ozonizer 8B ₃ and auxiliary machine 8A ₃ of No. ₃ are operated, the dryer 8-3 is started up, and the ozonizer (8B ₃ ) and solenoid valve (M ₃ ) are set to the hot standby state. Good.

[B] is a command from the correction regulator 17C, and when the required ozone amount Ox is commanded to increase, immediately after the ozone generator of No. 3 is operated, the auxiliary machine 8A _{4 of} No. ₄ is operated,
The ozonizer (8B ₄ ) and the motor-operated valve (M ₄ ) need only be in standby by hot standby. Incidentally, Ox command when a reduced, when good until No.3 → No.2 may be stopped and 8B ₃ and M ₃ leave the operation of only 8A _3.

[C] is the ozone generator Nos. 1 to 6 when the required ozone amount Ox is constant and the operation is continued for several months.
In order to make the operation time uniform, the operation of the ozone generator should be specified every 2 to 3 weeks in cyclic No. order.

As described above, the hot standby control shown in Table 1 of [A] to [C] is performed by the operating unit control calculator 17 in order to reduce running costs and save energy.

As a modification of the present invention, in FIG.
The process quantity input device 13, the control output device 14, and the ozone amount input device 15 are added to the input / output terminals of the conventional central monitoring central control panel, and the water quality ozone injection rate calculator 16 and the operating number control are provided in the central CPU. It is also effective to house the computing unit 17, the effective ozone amount control unit 18, and the storage unit 19 so that the CRT 1 screen display of the CRT display 20 is also used as a conventional CRT display.

Further, in FIGS.
Although it is shown as an example of the number of units, the required amount of ozone 17B can be calculated from the amount of treated water and the ozone injection rate 16C. Therefore, at least three or more ozone generators are defined as being necessary for reliability and safe operation. To be done. That is, as shown in Table 1, when the rated value of at least two units is the maximum and the required ozone amount is,
Even if one of the two units fails, the third unit can be in a hot standby condition, so the failure reduces the amount of ozone.
There is no happening.

Therefore, it can be seen from the required ozone amount that it is more effective than reliability and safe operation to have facility specifications for system design with at least three ozone generators. It is also useful for grasping the process to put the channel having the configuration shown in FIG. 1 on the CRT screen shown in FIG. 2 to clearly indicate the measurement / control points.

[0061]

As described above, the present invention has the following effects.

(1) The monitoring items of the correlation peculiar to the ozone treatment of the water purification plant are displayed on one screen, and the past to present values are displayed in color or by mark, so that it is easy for the operator to see and understand easily. Whether or not it is possible or not can be judged immediately.

(2) Since the process input amount, the effective ozone amount, and the proper operating condition of the ozone generator are displayed on one screen by the storage device, and the present value and the past histogram can be viewed in an overlapping manner, Compared to the previous year when the ozone treatment status due to changes in raw water is unique to the water treatment plant and the trend changes from year to year can be seen at a glance, making it easy for the operator to understand the operating history of the water treatment plant.

(3) From the water quality change related to the water temperature, the ozone injection rate related to the water quality change, the amount of treated water, and the required ozone amount, the operating states of a plurality of ozone generators are shown on one screen in a correlation diagram. As a result, the operator can easily understand the operating state of the ozone process.

(4) Since the current value of the correlation diagram of the preceding section and the recalled past correlation diagram can be displayed individually or in an overlapping manner, the operator can position the history of the operating state of the ozone process, The items that have changed can be used as a basis for preliminarily investigating and taking countermeasures such as elucidating the cause, and predictive maintenance activities can be performed. Therefore, there is no sudden stop, so unreliable operation monitoring control can be achieved. (5) Since hot standby can be used as an operating condition for a plurality of ozone generators, an emergency response can be automatically made to a change in the required ozone amount.

(6) Since the third auxiliary machine is operating as expected when two units are in operation, it is possible to perform energy-saving operation in which the power consumption for hot standby of the ozone generator is minimized.

(7) Since the effective ozone amount is corrected back to the field to suppress the excessive ozone injection rate and make the necessary ozone amount proper, the running cost can be reduced in the entire ozone treatment (power saving) operation.

(8) The effective ozone amount is a simple measurement value that gives an increase / decrease instruction to the reference value by subtracting the exhausted ozone amount from the diffused ozone amount. Since the electric power regulator is finely and automatically corrected, it is convenient as long as the operator is monitored without burdening the operator.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of a control operation device of an ozone water purification facility shown as an embodiment of the present invention.

FIG. 2 is an overall characteristic diagram of ozone water treatment displayed on a CRT by the control operation device of FIG.

FIG. 3 is a characteristic diagram showing the relationship between the number of operating ozonizers and the power adjustment rate obtained by the control operation device of FIG.

FIG. 4 is a configuration diagram showing an ozone water purification facility including an ozone generator group and an auxiliary equipment group in FIG. 1.

5 is a configuration diagram showing a detailed configuration of the ozone water purification facility of FIG. 1. FIG.

6 is a power adjustment characteristic diagram adjusted by a control signal from each device of FIG. 5;

[Explanation of symbols]

3 ... Flowmeter, 4 ... Ozone contact pond, 6 ... Exhaust ozone device, 7
A ... Ozone concentration meter, 8 ... Ozone generator, 16 ... Water quality ozone injection rate calculator, 17 ... Operating number control calculator, 18 ... Effective ozone amount control unit, 19 ... Storage device, 20 ... CRT display.

Front Page Continuation (72) Inventor Shigeo Shiono 1-1-1 Kokubuncho, Hitachi City, Ibaraki Hitachi Kokubun Plant, Hitachi Ltd.

Claims (8)

[Claims] 1. A water thermometer provided in a water channel in which ozone from a plurality of ozone generators is diffused from raw water into an ozone contact tank and an ozone pretreatment facility is provided in an input side water path of the ozone contact tank. Also, the required ozone amount is obtained from the water quality ozone injection rate calculator that takes in the measured values of the water quality meter and the flow meter and determines the ozone injection value corresponding to this measurement value, and the output value of the water quality ozone injection rate calculator. The total number of ozone generated by the operation number control calculator that determines the operation number of multiple ozone generators based on the operation table of the number of generation groups, and the operation command given to the multiple ozone generators based on the output value of the operation number control calculator It is equipped with an ozone contact pond for injecting water and an effective ozone amount calculator that inputs the ozone discharge amount from the ozone contact reservoir and judges whether the ozone discharge amount is a reference value or not. The output value of is the adjustment value of the correction adjuster that adjusts the multiple ozone generators, and the operating value of the multiple ozone generators described above is input to the CRT in which the output value of the operating unit control calculator is input. A control operation device of an ozone water purification facility characterized by displaying a value. 2. The control operation device of an ozone water purification facility according to claim 1, further comprising a storage device for storing the measured value and the measured value. 3. A water temperature characteristic value, a water quality characteristic value, an ozone injection rate value, a treated water amount value, a required ozone amount value, and operating values of a plurality of ozone generators used as the above measured values on a CRT are displayed on one screen. The control operation device of the ozone water purification facility according to claim 1, wherein 4. A storage device for storing the water temperature characteristic value, the water quality characteristic value, the ozone injection rate value, the treated water amount value, the required ozone amount value, and the operating number of a plurality of ozone generators. Item 1. A control operation device for an ozone water purification facility according to Item 1. 5. A method in which raw water is diffused with ozone from a plurality of ozone generators to an ozone contact pond, and an ozone pretreatment facility is provided in an input side water channel of the ozone contact pond, which is used for the ozone generator. The method for controlling operation of an ozone water purification facility, characterized in that the operating state of the auxiliary equipment is maintained at least one operating state more than the operating number of a plurality of ozone generators. 6. From the operating number of the two ozone generators, 1
The control operating method of an ozone water purification facility according to claim 5, wherein the operating state of the auxiliary equipment is maintained for an extra number of units or more. 7. A correction adjuster that operates with the output of an effective ozone amount calculator from the number of operating two ozone generators,
The control operating method of an ozone water purification facility according to claim 5, wherein the total amount of discharged ozone is matched with a reference value by setting the operating points of the two ozone generators to be proper. 8. A method in which raw water is diffused with ozone from a plurality of ozone generators into an ozone contact pond, and an ozone pretreatment facility is provided in an input side water channel of the ozone contact pond. An ozone flow meter and an ozone concentration meter that measure the output ozone from multiple ozone generators, an exhaust ozone meter that detects the ozone exhaust device from the ozone contact pond and an ozone exhaust device from the activated carbon adsorption pond, and ozone A control operation device for an ozone water purification facility, comprising an ozone control unit for converting a detected value from a flow meter and an exhaust ozone meter into a reference value and controlling the input power of an operating number of ozone generators.