JP2020089841A - Water treatment controlling device, water treatment system, and water treatment device - Google Patents

Abstract

To provide a water treatment controlling device capable of controlling injection rates of ozone and an oxidation promoting agent and a ratio therebetween at proper values.SOLUTION: The water treatment controlling device includes an oxidation promoting agent feeding part for feeding an oxidation promoting agent to a water inlet port, an ozone feeding part for feeding ozone to reaction container groups, a first organic matter amount measuring part for measuring an organic matter amount in water to be treated prior to treatment, a second organic matter amount measuring part for measuring an organic matter amount in the water to be treated after the treatment, and a control part constituted so as to be capable of adjusting a feeding amount of the oxidation promoting agent to the water inlet port by the oxidation promoting agent feeding part and a feeding amount of the ozone to the reaction container groups by the ozone feeding part based on the organic matter amount measured by the first organic matter amount measuring part, or adjusting a feeding amount of the oxidation promoting agent to the water inlet port by the oxidation promoting agent feeding part and a feeding amount of the ozone to the reaction container groups by the ozone feeding part based on the organic matter amount measured by the second organic matter amount measuring part.SELECTED DRAWING: Figure 1

Description

Embodiments of the present invention relate to a water treatment control device, a water treatment system, and a water treatment device.

Conventionally, ozone has been used in water, sewage, industrial wastewater, pools, etc. for the treatment of oxidative decomposition, sterilization, deodorization, etc. of organic matter in water. However, oxidation by ozone can make it hydrophilic and lower molecular weight, but it cannot make it inorganic. In addition, persistent organic substances such as 1,4-dioxane cannot be decomposed.

Therefore, when decomposing the above-mentioned hardly decomposable organic matter, one of the effective means is to oxidize and decompose by using OH radicals having a stronger oxidizing power than ozone. To generate OH radicals, a method of adding an oxidation promoter such as hydrogen peroxide to ozone-containing water may be used.

JP, 2008-069212, A

In the above technique, it is important to control the injection rates of ozone and the oxidation promoter and their ratios at appropriate values.

The present invention has been made to solve the above problems, and a water treatment control device, a water treatment system, and a water treatment apparatus capable of appropriately controlling the injection rates of ozone and an oxidation promoter and their ratios. An object is to provide a processing device.

The water treatment apparatus of the embodiment is a water treatment control apparatus applied to a multi-stage water treatment apparatus that sequentially treats water to be treated while passing through the reaction vessel group, and the treatment water to the reaction vessel group is the treated water. Ozone which is configured to be installed in a water inlet for supplying the oxygen, and which is configured to be installed in the reaction vessel group and an oxidation accelerator supply unit which supplies an oxidation accelerator to the water inlet, and which supplies ozone to the reaction vessel group. A supply unit, a first organic matter amount measuring unit configured to be installed at the water inlet and configured to measure the amount of organic matter in the untreated water before treatment, and the treated water after treatment being discharged from the reaction vessel group. The second organic matter amount measuring unit configured to be installed at the water outlet to measure the amount of organic matter in the treated water after treatment, and the organic matter amount measured by the first organic matter amount measuring unit, and The supply amount of the oxidation promoter to the water inlet by the oxidation promoter supply unit and the supply amount of the ozone to the reaction container group by the ozone supply unit are adjusted, or the second organic substance amount measurement unit is Based on the measured amount of the organic matter, it is configured to be able to adjust the supply amount of the oxidation promoter to the water inlet by the oxidation promoter supply unit and the supply amount of the ozone to the reaction container group by the ozone supply unit. And a control unit.

FIG. 1 is a schematic configuration block diagram of a water treatment system according to the first embodiment. FIG. 2 is a schematic diagram illustrating feedforward control and feedback control in the water treatment system according to the first embodiment. FIG. 3 is a flowchart showing an example of the procedure of water treatment by the water treatment system according to the first embodiment. FIG. 4 is a flowchart showing an example of a procedure of feedforward control and feedback control in the water treatment system according to the first embodiment. FIG. 5 is a schematic configuration block diagram of a water treatment system according to a modified example of the first embodiment. FIG. 6 is a schematic block diagram of the water treatment system according to the second embodiment. FIG. 7 is a schematic diagram illustrating feedforward control and feedback control in the water treatment system according to the second embodiment. FIG. 8 is a flowchart showing an example of a procedure of feedforward control and feedback control in the water treatment system according to the second embodiment. FIG. 9 is a schematic block diagram of a water treatment system according to a modified example of the second embodiment. FIG. 10 is a schematic block diagram of the water treatment device according to the third embodiment. FIG. 11 is a schematic diagram illustrating feedforward control and feedback control in the water treatment device according to the third embodiment.

[Embodiment 1]
The first embodiment will be described with reference to FIGS.

(Example of water treatment system configuration)
FIG. 1 is a schematic configuration block diagram of a water treatment system 10 according to the first embodiment. As shown in FIG. 1, the water treatment system 10 is a multi-stage water treatment system including a reaction container group 13X. The multi-stage water treatment system is a system in which the treated water LQ is sequentially treated while passing through the reaction container group 13X.

The water treatment system 10 includes an ozone generator 11, a water supply pump 12, a reaction container group 13X, supply pipes 14OZ and 14HP, an air diffusing unit 15, a hydrogen peroxide injecting device 16, fluorescent intensity meters 17A and 17D, and a controller 18. Prepare

The reaction container group 13X includes a water inlet 13Xi and a water outlet 13Xo. From the water inlet 13Xi, the water to be treated LQ, which is the liquid to be treated, is supplied into the reaction vessel group 13X. The water supply pump 12 sends the treated water LQ into the reaction vessel group 13X from the water inlet 13Xi. The water to be treated LQ contains organic substances such as dioxins, 1,4-dioxane, musty odor substances, and persistent organic substances such as pharmaceuticals. These organic substances are decomposed in the reaction vessel group 13X by an accelerated oxidation treatment using ozone and hydrogen peroxide. The treated water LQ after treatment is discharged from the water outlet 13Xo.

The reaction vessel group 13X also includes at least two or more reaction vessels 13A and 13B and communication paths 13C and 13D. In the example of FIG. 1, the reaction container group 13X includes two reaction containers 13A and 13B. The reaction vessel 13A, the communication path 13C, the reaction vessel 13B, and the communication path 13D are provided so as to be adjacent to each other and in communication in this order. The reaction vessels 13A and 13B store and process the water LQ to be treated. The communication path 13C guides the untreated water LQ in the reaction vessel 13A into the reaction vessel 13B. The communication path 13D guides the treated water LQ in the reaction vessel 13B to the water outlet 13Xo.

More specifically, the water to be treated LQ taken from the water inlet 13Xi above the reaction container 13A is first supplied into the reaction container 13A. The reaction container 13A includes a water outlet 13Ao below the reaction container 13A on the side of the communication path 13C. The treated water LQ in the reaction container 13A is discharged from the water outlet 13Ao to the communication path 13C.

The reaction container 13B includes a water inlet 13Bi above the reaction container 13B on the side of the communication path 13C. The water LQ to be treated discharged from the reaction vessel 13A to the communication path 13C is supplied into the reaction vessel 13B from the water inlet 13Bi. The reaction vessel 13B also includes a water outlet 13Bo below the reaction vessel 13B on the side of the communication path 13D. The treated water LQ supplied into the reaction vessel 13B is discharged from the water outlet 13Bo to the communication path 13D.

The treated water LQ discharged to the communication path 13D is discharged to the outside of the reaction container group 13X from the water outlet 13Xo above the communication path 13D.

The ozone generator 11 as an ozone supply unit discharges oxygen or dry air as a raw material gas to generate ozone gas, for example. The ozone generator 11 also supplies an ozonized gas (O ₃ +O ₂ or O ₃ +O ₂ +N ₂ ) OG containing ozone gas to the reaction vessels 13A and 13B via the supply pipe 14OZ. Valves 14VAoz and 14VBoz are provided in the supply pipe 14OZ. The valve 14VAoz adjusts the supply amount of the ozonized gas OG to the reaction container 13A. The valve 14VBoz adjusts the amount of ozonized gas OG supplied to the reaction vessel 13B.

The air diffusion unit 15 is arranged at the bottom of the reaction vessels 13A and 13B, and supplies the ozonized gas OG supplied into the reaction vessels 13A and 13B in the form of bubbles.

The hydrogen peroxide injection device 16 as the oxidation promoter supply unit generates hydrogen peroxide (H ₂ O ₂ ) as the oxidation promoter by using, for example, an electrolysis method. In the electrolysis method, a pair of electrode plates are vertically inserted into water so as to face each other, and electrolysis is performed on water as an electrolytic solution to generate hydrogen peroxide. The hydrogen peroxide injection device 16 also supplies the hydrogen peroxide solution HS containing the generated hydrogen peroxide to the water inlet 13Xi of the reaction container group 13X via the supply pipe 14HP. A valve 14Vhp is provided on the supply pipe 14HP. The valve 14Vhp adjusts the supply amount of the hydrogen peroxide solution HS to the water inlet 13Xi.

The fluorescence intensity meter 17A as the first organic substance amount measuring unit and the fluorescence intensity meter 17D as the second organic substance amount measuring unit measure the concentration of the organic substances in the treated water LQ. The fluorescence intensity has a correlation with the amount of organic matter in water and serves as an index showing the state of decomposition of organic matter by ozone or the like. By changing the fluorescence intensity in the treated water LQ, the amount of organic substances in the treated water LQ can be known.

The fluorescence intensity meter 17A is installed near the water inlet 13Xi of the reaction container group 13X and measures the fluorescence intensity in the untreated water LQ to be treated. The vicinity of the water inlet 13Xi is, for example, in a pipe connected to the water inlet 13Xi. However, the fluorescence intensity meter 17A may be installed at any position as long as the fluorescence intensity in the untreated water LQ can be measured. The fluorescence intensity meter 17A may be installed at the water inlet 13Xi itself of the reaction container 13B, not depending on the example of FIG.

The fluorescence intensity meter 17D is installed in the vicinity of the water outlet 13Bo of the reaction vessel 13B and measures the fluorescence intensity in the treated water LQ after treatment. The vicinity of the water outlet 13Bo is, for example, in the communication path 13D. However, the fluorescence intensity meter 17D may be installed at any position as long as it can measure the fluorescence intensity in the treated water LQ after treatment. The fluorescence intensity meter 17D may be installed at the water outlet 13Bo itself of the reaction container 13B, regardless of the example of FIG.

The control unit 18 controls each unit of the water treatment system 10. That is, the control unit 18 controls the ozone generator 11, the hydrogen peroxide injector 16, the valves 14VAoz, 14VBoz, 14Vhp, the air diffusing unit 15, and the fluorescence intensity meters 17A, 17D. Thereby, the water treatment system 10 treats the treated water LQ.

More specifically, when the treated water LQ is supplied from the water inlet 13Xi by the water supply pump 12, the fluorescence intensity of the treated water LQ is measured by the fluorescence intensity meter 17A. The control unit 18 acquires the measured fluorescence intensity. Further, the hydrogen peroxide injection device 16 starts the generation of the hydrogen peroxide solution HS, and the ozone generator 11 starts the generation of the ozonized gas OG. Then, the control unit 18 starts the supply of the appropriate amount of the hydrogen peroxide solution HS to the water to be treated LQ based on the acquired fluorescence intensity. Further, the control unit 18 starts the supply of the appropriate amount of ozonized gas OG to the water to be treated LQ to which the hydrogen peroxide solution HS has been supplied, based on the acquired fluorescence intensity. In this way, the water to be treated LQ of the ozonized gas OG is supplied to the water to be treated LQ to which the hydrogen peroxide solution HS has been supplied.

The water LQ to be treated supplied from the water inlet 13Xi to the reaction vessel 13A forms a downward flow DS in a state where hydrogen peroxide is dissolved. Then, the downward flow DS of the treated water LQ is mixed with the upward flow US of the ozonized gas OG, whereby hydrogen peroxide in the treated water LQ reacts with ozone dissolved in the treated water LQ, and OH Radicals are generated.

The OH radical having a strong oxidizing power causes an accelerated oxidation process (AOP) in the water to be treated LQ. In the accelerated oxidation treatment, the OH radical reacts with the compound component in water contained in the water to be treated LQ to decompose the compound component in water. At this time, since the OH radical has a strong oxidizing power, the decomposition proceeds even if it is a hardly decomposable water compound component.

In this way, the water to be treated LQ that has been subjected to the accelerated oxidation treatment in the reaction vessel 13A is introduced into the reaction vessel 13B from the water inlet 13Bi via the communication path 13C. In the reaction vessel 13B, the treated water LQ is again subjected to the accelerated oxidation treatment, and the treated water LQ is discharged to the outside of the reaction vessel 13B.

On the other hand, it is also possible to adjust the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG according to the state of the treated water LQ after the treatment. In this case, the fluorescence intensity of the water to be treated LQ is measured by the fluorescence intensity meter 17D at the water outlet 13Bo. The control unit 18 acquires the measured fluorescence intensity. The control unit 18 adjusts the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG to the water to be treated LQ based on the acquired fluorescence intensity.

The untreated water LQ discharged to the outside of the reaction container 13B is discharged to the outside of the reaction container group 13X via the communication path 13D and the water outlet 13Xo.

As described above, the treated water LQ is treated. At this time, as described above, the control unit 18 performs feedforward control or feedback control on the supply amounts of ozone and hydrogen peroxide to the water to be treated LQ. The situation is shown in FIG. FIG. 2 is a schematic diagram illustrating feedforward control and feedback control in the water treatment system 10 according to the first embodiment.

As shown in FIG. 2, the control unit 18 uses the fluorescence intensity meter 17A provided near the water inlet 13Xi to perform feedforward control on the water treatment in the reaction container group 13X.

More specifically, when the fluorescence intensity of the untreated water LQ is within the predetermined range, the amount of organic matter is considered to be within the predetermined range. Therefore, the control unit 18 controls the hydrogen peroxide solution HS and ozone. The supply amount of the gasified gas OG is kept constant. When the fluorescence intensity of the untreated water LQ is increased, it is considered that the amount of organic substances is increased. Therefore, the control unit 18 increases the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG. When the fluorescence intensity of the untreated water LQ decreases, it is considered that the amount of organic substances has decreased. Therefore, the control unit 18 decreases the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG. In this way, the control unit 18 grasps in advance the level of the amount of organic matter in the untreated water LQ as a disturbance, and performs the feedforward control according to the numerical value.

Further, the control unit 18 uses the fluorescence intensity meter 17D provided near the water outlet 13Bo to perform feedback control on the water treatment in the reaction container group 13X.

More specifically, when the fluorescence intensity of the treated water LQ after treatment is equal to or higher than a predetermined value, it is considered that there is still an allowable amount or more of organic matter in the treated water LQ. , Increase the supply of hydrogen peroxide water HS and ozonized gas OG. When the fluorescence intensity of the treated water LQ after the treatment is less than the predetermined value, the amount of organic substances in the treated water LQ is considered to be within the allowable value, so the control unit 18 controls the hydrogen peroxide solution HS and The supply amount of ozonized gas OG is kept constant. In this way, the control unit 18 grasps the level of the amount of organic matter in the treated water LQ after treatment as an output, and determines whether or not the treated water LQ is appropriately treated based on this output. Then, feedback control is performed accordingly.

As described above, in the water treatment system 10 according to the first embodiment, a water treatment control device that performs feedforward control or feedback control for water treatment is added to a multi-stage water treatment device including a plurality of reaction vessels 13A and 13B. It can be said that it takes the applied form. As described above, in the water treatment control device, it is possible to appropriately select whether the fluorescence intensity meter 17A is used for feedforward control or the fluorescence intensity meter 17D is used for feedback control.

The water treatment control device of the first embodiment is mainly configured by an ozone generation device 11, a hydrogen peroxide injection device 16, fluorescence intensity meters 17A and 17D, and a control unit 18.

(Example of water treatment by water treatment system)
Next, an example of water treatment by the water treatment system 10 will be described with reference to FIGS. 3 and 4. FIG. 3 is a flowchart showing an example of the procedure of water treatment by the water treatment system 10 according to the first embodiment.

As shown in FIG. 3, the control unit 18 starts the supply of the water to be treated LQ to the reaction container group 13X while the water supply pump 12 is operating (step S10). Further, the control unit 18 operates the hydrogen peroxide injection device 16 to generate hydrogen peroxide, and starts the supply of the hydrogen peroxide solution HS to the reaction container group 13X. In addition, the control unit 18 operates the ozone generator 11 to generate ozone and starts supplying the ozonized gas OG to the reaction container group 13X (step S20).

Then, the control unit 18 performs feedforward control or feedback control based on the fluorescence intensity measured by the fluorescence intensity meters 17A and 17D, and continues to supply the ozonized gas OQ and the hydrogen peroxide solution HS to the reaction container group 13X. (Step S30).

After the water supply pump 12 is stopped or after a predetermined amount of water to be treated LQ is processed, the control unit 18 stops the supply of the water to be treated LQ to the reaction vessel group 13X.

With the above, the water treatment by the water treatment system 10 is completed.

FIG. 4 is a flowchart showing an example of a procedure of feedforward control and feedback control in the water treatment system 10 according to the first embodiment. FIG. 4 shows a detailed procedure of step S30 in FIG.

As shown in FIG. 4A, when performing the feedforward control, the control unit 18 causes the fluorescence intensity meter 17A to measure the fluorescence intensity of the untreated water LQ to be treated and obtains the value ( Step S31). The control unit 18 determines whether or not the measured fluorescence intensity is within a predetermined value (step S32).

When the fluorescence intensity is within the predetermined value (step S32: Yes), the control unit 18 keeps the supply amounts of the ozonized gas OQ and the hydrogen peroxide solution HS to the reaction container group 13X constant (step S33a). .. When the fluorescence intensity is less than the predetermined value (step S32: No (low)), the control unit 18 reduces the supply amounts of the ozonized gas OQ and the hydrogen peroxide solution HS to the reaction container group 13X (step). S33b). When the fluorescence intensity exceeds the predetermined value (step S32: No (high)), the control unit 18 increases the supply amounts of the ozonized gas OQ and the hydrogen peroxide solution HS to the reaction container group 13X (step). S33c).

As shown in FIG. 4B, when feedback control is performed, the control unit 18 causes the fluorescence intensity meter 17D to measure the fluorescence intensity of the treated water LQ after treatment, and acquires the value (step). S34). And the control part 18 repeats the process of step S32-step S33a, 33b, 33c. That is, the processing of steps S32 to S33a, 33b, 33c is performed based on the measurement result of the fluorescence intensity meter 17D.

As described above, the control unit 18 performs the feedforward control (S31→S32→S33a, S33b, S33c) on the water treatment in the reaction container group 13X. Alternatively, the control unit 18 performs feedback control (S34→S32→S33a, S33b, S33c) on the water treatment in the reaction container group 13X.

(Comparative example)
Here, the water treatment system of the comparative example will be described. The water treatment system of the comparative example includes, for example, a reaction container group including two reaction containers. The ozonized gas is supplied to each of the two reaction vessels. Hydrogen peroxide water is supplied only to the second reaction vessel. Therefore, the treatment with ozone is performed in the first reaction container. In the second reaction vessel, an accelerated oxidation process using ozone and hydrogen peroxide is performed. A dissolved ozone concentration meter is installed between the reaction vessel of the first tank and the reaction vessel of the second tank. The dissolved ozone concentration meter measures the concentration of ozone dissolved in the water to be treated. The control unit injects the ozonized gas so that the dissolved ozone concentration becomes constant, and adjusts the injection amount of hydrogen peroxide water into each reaction container according to the injection rate of the ozonized gas.

The water treatment system of the comparative example has the following problems.

There is a possibility that harmful by-products such as bromic acid may be generated in the first tank ozone treatment alone. However, if the accelerated oxidation treatment in which byproducts are less likely to occur is used in the first tank, the dissolved ozone concentration cannot be measured properly. This is because dissolved ozone is decomposed by hydrogen peroxide or the like.

Further, in order to adjust the supply amounts of ozone and hydrogen peroxide solution, dissolved ozone must be detected in the vicinity of the water outlet of the first tank. That is, in the vicinity of the outlet of the first tank, excess ozone that has not contributed to water treatment must be present, and the supply of ozonized gas tends to be excessive in the entire system. Excessive supply of ozonized gas makes it more likely that harmful by-products will be produced.

In the water treatment system 10 of the first embodiment, the ozonized gas OG is supplied to the water to be treated LQ to which the hydrogen peroxide solution HS has been supplied. Therefore, the reaction of the ozone with the organic substance is suppressed, and the treated water LQ is mainly treated by the accelerated oxidation treatment in both the reaction vessels 13A and 13B. Thereby, the production of by-products such as bromic acid can be suppressed.

In the water treatment system 10 of the first embodiment, the measurement result of the fluorescence intensity meter 17D is used to know the amount of organic matter. As a result, even in the presence of hydrogen peroxide or the like, the state of water treatment can be properly grasped, and an appropriate amount of ozonized gas OG and hydrogen peroxide solution HS can be supplied.

In the water treatment system 10 of the first embodiment, the measurement result of the fluorescence intensity meter 17A is used to know the amount of organic matter. As a result, it is possible to know in advance the fluctuations in the amount of organic substances in the untreated water LQ, and to more appropriately adjust the supply amounts of the ozonized gas OG and the hydrogen peroxide solution HS.

In the water treatment system 10 of the first embodiment, since the appropriate amounts of ozonized gas OG and hydrogen peroxide solution HS are supplied in this way, the production of harmful by-products can be further suppressed.

In the water treatment system of the comparative example and the water treatment system 10 of the first embodiment, a simulation test with simulated water was performed. Simulated water prepared by adding 2-methylisoborneol (2-MIB), which is a musty odor substance, to water was subjected to a continuous treatment test using the above two systems. In the water treatment system 10 of the first embodiment, Compared with the system of the comparative example, the injection amounts of ozonized gas and hydrogen peroxide solution were reduced by about 20% each.

In this manner, the ozone single treatment is eliminated, the water treatment is performed exclusively by the accelerated oxidation treatment, and the precise feedforward control or the feedback control by the fluorescence intensity meters 17A and 17D is performed to simply combine these configurations. It was found that the above effects can be obtained.

(Modification)
Next, a water treatment system 10a according to a modified example of the first embodiment will be described with reference to FIG. The water treatment system 10a of the modified example is different from the above-described first embodiment in that it does not have the fluorescence intensity meter 17A.

FIG. 5 is a schematic configuration block diagram of a water treatment system 10a according to a modified example of the first embodiment. As shown in FIG. 5, the water treatment system 10a does not have the fluorescence intensity meter 17A but has a fluorescence intensity meter 17D.

The supply of the ozonized gas OG and the hydrogen peroxide solution HS into the reaction container group 13X is the same as in the above-described first embodiment except that feedforward control is not performed. That is, in the water treatment system 10a, the control unit 18a uses the fluorescence intensity meter 17D to perform feedback control on the water treatment in the reaction container group 13X.

As described above, the water treatment system 10a of the modified example of the first embodiment is also a water treatment system that performs feedforward control and feedback control for water treatment in a multi-stage water treatment device that includes a plurality of reaction vessels 13A and 13B. It can be said that the control device is applied.

The water treatment control device of the modified example of the first embodiment is mainly composed of an ozone generator 11, a hydrogen peroxide injector 16, a fluorescence intensity meter 17D, and a controller 18a.

Also in the water treatment system 10a of the modified example, the same effects as those of the above-described first embodiment are achieved except for the effects of the feedforward control.

[Embodiment 2]
Next, the water treatment system 20 of Embodiment 2 will be described with reference to FIGS. 6 to 9. The water treatment system 20 of the second embodiment is different from the above-described first embodiment in that a fluorescence intensity meter 27C is provided instead of the fluorescence intensity meter 17D.

(Example of water treatment system configuration)
FIG. 6 is a schematic configuration block diagram of the water treatment system 20 according to the second embodiment. As shown in FIG. 6, the water treatment system 20 includes a fluorescence intensity meter 27C as an organic substance amount measuring unit. The fluorescence intensity meter 27C is installed in the communication path 13C and measures the fluorescence intensity in the water LQ to be treated after being treated in the reaction vessel 13A. According to the example of FIG. 6, the fluorescence intensity meter 27C is installed near the water outlet 13Ao of the reaction container 13A. However, the fluorescence intensity meter 17C is located between the reaction vessels 13A and 13B at a position after the treatment in the reaction vessel 13A and at a position where the fluorescence intensity in the treated water LQ before the treatment in the reaction vessel 13B can be measured. It may be installed at any position.

Further, the water treatment system 20 includes a hydrogen peroxide injection device 16 as a first oxidation promoter supply unit arranged in the vicinity of the water inlet 13Xi, and a second hydrogen peroxide solution HS for supplying the hydrogen peroxide solution HS to the reaction vessel 13B. A hydrogen peroxide injection device 26 is provided as an oxidation promoter supply unit. The hydrogen peroxide injecting device 26 supplies the hydrogen peroxide solution HS to the reaction vessel 13B through the supply pipe 24HP provided with the valve 24Vhp.

The control unit 28 controls each unit of the water treatment system 20 including the fluorescence intensity meter 27C and the hydrogen peroxide injection device 26.

More specifically, the treated water LQ that has been subjected to the accelerated oxidation treatment in the reaction vessel 13A is discharged from the water outlet 13Ao. At the water outlet 13Ao, the fluorescence intensity of the water to be treated LQ is measured by the fluorescence intensity meter 27C. The control unit 28 acquires the measured fluorescence intensity. The control unit 28 feedback-controls the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG to the reaction container 13A based on the acquired fluorescence intensity. Further, the control unit 28 feedforward-controls the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG to the reaction vessel 13B based on the acquired fluorescence intensity. Depending on the acquired fluorescence intensity, the hydrogen peroxide solution HS may not be supplied to the reaction container 13B (zero supply amount).

FIG. 7 is a schematic diagram illustrating feedforward control and feedback control in the water treatment system 20 according to the second embodiment.

As shown in FIG. 7, the control unit 28 uses a fluorescence intensity meter 27C provided near the water outlet 13Ao to perform feedback control on the water treatment in the reaction vessel 13A.

More specifically, when the fluorescence intensity of the treated water LQ after the treatment in the reaction vessel 13A is equal to or higher than a predetermined value, it is not less than the permissible amount after the treatment in the reaction vessel 13A in the treated water LQ. Since it is considered that the organic substance exists, the control unit 28 increases the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG into the reaction container 13A. When the fluorescence intensity of the treated water LQ after the treatment in the reaction vessel 13A is less than the predetermined value, the amount of organic substances in the treated water LQ is considered to be within the allowable value, so the control unit 28 The supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG into the reaction container 13A are kept constant. In this way, the control unit 28 grasps the amount of organic matter in the treated water LQ after treatment in the reaction vessel 13A as an output, and performs appropriate treatment on the treated water LQ based on the level of this output. It is determined whether or not it is broken, and feedback control is performed accordingly.

Further, the control unit 28 uses a fluorescence intensity meter 27C provided near the water outlet 13Ao to perform feedforward control on the water treatment in the reaction vessel 13B.

More specifically, after the treatment in the reaction vessel 13A and before the treatment in the reaction vessel 13B, the fluorescence intensity of the water LQ to be treated is within the predetermined range, the amount of organic matter is within the predetermined range. Since it is considered to be present, the control unit 28 keeps the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG into the reaction container 13B constant. When the fluorescence intensity of the untreated water LQ in the reaction container 13B increases, it is considered that the amount of organic matter that could not be completely processed in the reaction container 13A increased. The amounts of water HS and ozonized gas OG supplied to the reaction vessel 13B are increased. When the fluorescence intensity of the untreated water LQ in the reaction container 13B decreases, it is considered that the amount of organic matter that could not be completely processed in the reaction container 13A has decreased. The supply amounts of water HS and ozonized gas OG into the reaction container 13B are reduced. In this way, the control unit 28 grasps in advance the level of the amount of organic matter in the untreated water LQ in the reaction vessel 13B as a disturbance, and performs feedforward control according to the numerical value.

As described above, in the water treatment system 20 according to the second embodiment, a water treatment control device that performs feedforward control or feedback control for water treatment is added to a multi-stage water treatment device that includes a plurality of reaction vessels 13A and 13B. It can be said that it takes the applied form. Thus, in the water treatment control device, while performing the feedforward control for the reaction vessel 13B using the fluorescence intensity meter 27C, the feedforward control is performed for the reaction vessel 13A using the fluorescence intensity meter 17A. Alternatively, whether to perform feedback control using the fluorescence intensity meter 27C can be appropriately selected.

The water treatment control device of the second embodiment mainly includes an ozone generator 11, hydrogen peroxide injection devices 16 and 26, fluorescence intensity meters 17A and 27C, and a controller 28.

(Example of water treatment by water treatment system)
FIG. 8 is a flowchart showing an example of a procedure of feedforward control and feedback control in the water treatment system 20 according to the second embodiment. FIG. 8 shows a detailed procedure of step S30 in FIG. 3 to be referred to.

As shown in FIG. 8A, when performing feedforward control, the control unit 28 causes the fluorescence intensity meter 17A to measure the fluorescence intensity of the untreated water LQ to be treated, and obtains the value ( Step S31).

The control unit 28 performs feedforward control on the reaction container 13A based on the acquired fluorescence intensity. That is, the control unit 28 performs the processes of steps S32 to S33a, 33b, 33c on the reaction container 13A.

Further, the control unit 28 causes the fluorescence intensity meter 27C to measure the fluorescence intensity of the treated water LQ after the treatment in the reaction container 13A and before the treatment in the reaction container 13B, and acquires the value. (Step S34).

As shown in FIG. 8B, when performing feedback control, the control unit 28 performs the processes of steps S32 to S33a, 33b, and 33c on the reaction container 13A based on the acquired fluorescence intensity. ..

As shown in FIGS. 8A and 8B, the control unit 28 also performs feedforward control on the reaction container 13B based on the acquired fluorescence intensity. That is, the control unit 28 determines whether or not the acquired fluorescence intensity is within a predetermined value (step S35).

When the fluorescence intensity is within the predetermined value (step S35: Yes), the control unit 28 keeps the supply amounts of the ozonized gas OG and the hydrogen peroxide solution HS to the reaction container 13B constant (step S36a). When the fluorescence intensity is less than the predetermined value (step S35: No (low)), the control unit 28 reduces the supply amounts of the ozonized gas OG and the hydrogen peroxide solution HS to the reaction container 13B (step S36b). ). When the fluorescence intensity exceeds the predetermined value (step S35: No (high)), the control unit 28 increases the supply amounts of the ozonized gas OG and the hydrogen peroxide solution HS to the reaction container 13B (step S36c). ).

As described above, the control unit 28 performs the feedforward control (S31→S32→S33a, S33b, S33c) on the water treatment in the reaction container 13A. Alternatively, the control unit 28 performs feedback control (S34→S32→S33a, S33b, S33c) on the water treatment in the reaction container 13A. Further, the control unit 28 performs feedforward control (S34→S35→S36a, S36b, S36c) on the water treatment in the reaction vessel 13B.

The water treatment system 20 of the second embodiment also has the same effects as those of the first embodiment.

Further, in the water treatment system 20 of the second embodiment, since the fluorescence intensity meter 27C is installed between the reaction vessels 13A and 13B, the amount of organic matter in the water to be treated LQ immediately after the treatment in the reaction vessel 13A is finished is shown. Therefore, the feedback control for the reaction container 13A can be performed more appropriately and more quickly.

Further, in the water treatment system 20 of the second embodiment, the fluorescence intensity meter 27C enables two controls, that is, feedback control for the reaction container 13A and feedforward control for the reaction container 13B. Thereby, more precise control can be performed for the water treatment with a small configuration.

(Modification)
Next, a water treatment system 20a of a modified example of the second embodiment will be described with reference to FIG. The water treatment system 10a of the modified example is different from that of the second embodiment described above in that it does not have the fluorescence intensity meter 17A.

FIG. 9 is a schematic configuration block diagram of a water treatment system 20a according to a modified example of the second embodiment. As shown in FIG. 9, the water treatment system 20a does not have the fluorescence intensity meter 17A but has a fluorescence intensity meter 27C.

The supply of the ozonized gas OG and the hydrogen peroxide solution HS into the reaction container group 13X is the same as in the second embodiment described above except that the feedforward control is not performed on the reaction container 13A. That is, in the water treatment system 20a, the controller 28a performs feedback control on the water treatment in the reaction vessel 13A and feedforward control on the water treatment in the reaction vessel 13B.

As described above, the water treatment system 20a of the modified example of the second embodiment is also a water treatment system that performs feedforward control and feedback control for water treatment in a multi-stage water treatment apparatus including a plurality of reaction vessels 13A and 13B. It can be said that the control device is applied.

The water treatment control device of the modified example of the second embodiment mainly includes an ozone generator 11, hydrogen peroxide injection devices 16 and 26, a fluorescence intensity meter 27C, and a controller 28a.

Also in the water treatment system 20a of the modified example, the same effect as that of the above-described second embodiment is obtained.

[Third Embodiment]
Next, the water treatment device 30 of the third embodiment will be described with reference to FIG. The water treatment device 30 of the third embodiment differs from the first and second embodiments described above in that it is of an ejector type.

FIG. 10 is a schematic block diagram of the water treatment device 30 according to the third embodiment. As shown in FIG. 10, the water treatment device 30 includes an ozone generator 31, a water supply pump 32, a reaction container 33, an ejector 33ej, supply pipes 34OZ and 34HP, a static mixer 35, a hydrogen peroxide injection device 36, and a fluorescence intensity meter 37A. , 37D, and a control unit 38.

The reaction vessel 33 has a pipe type with both ends open. An ejector 33ej is connected to one end of the reaction container 33, and a water inlet 33i is provided through the ejector 33ej. A water outlet 33o is provided at the other end of the reaction container 33. The water to be treated LQ is supplied into the reaction vessel 33 from the water inlet 33i. The water supply pump 32 feeds the water to be treated LQ into the reaction container 33 through the water inlet 33i. The treated water LQ that has been treated is discharged from the water outlet 33o. The reaction container 33 has a static mixer 35 inside. The static mixer 35 is a static mixer that mixes the water to be treated LQ. However, the reaction container 33 may have a mixer other than the static mixer 35 as long as it can mix the water to be treated LQ.

The ejector 33ej has a shape in which two cones meet at their vertices. The water to be treated LQ passes through the flow path of the ejector 33ej from the end on the water inlet 33i side to the end on the reaction container 33 side. In the throat portion 33th, which is the apex portion of the two cones, the flow path of the water to be treated LQ is narrower than the others.

The ozone generator 31 supplies the ozonized gas OG containing the generated ozone gas to the throat portion 33th of the ejector 33ej via the supply pipe 34OZ. A valve 34Voz is provided on the supply pipe 34OZ. The valve 34Voz adjusts the amount of ozonized gas OG supplied to the throat portion 33th.

The hydrogen peroxide injection device 36 supplies the hydrogen peroxide solution HS containing the generated hydrogen peroxide to the water inlet 33i of the reaction container 33 via the supply pipe 34HP. A valve 34Vhp is provided in the supply pipe 34HP. The valve 34Vhp adjusts the supply amount of the hydrogen peroxide solution HS to the water inlet 33i.

The fluorescence intensity meter 37A is installed near the water inlet 33i of the reaction container 33 and measures the fluorescence intensity in the untreated water LQ to be treated. The fluorescence intensity meter 37D is installed near the water outlet 33o of the reaction container 33 and measures the fluorescence intensity in the treated water LQ after treatment.

The control unit 38 controls each unit of the water treatment device 30. That is, the control unit 38 controls the ozone generator 31, the hydrogen peroxide injector 36, the valves 34Voz and 34Vhp, and the fluorescence intensity meters 37A and 37D. Thereby, the water treatment device 30 treats the water LQ to be treated.

More specifically, when the water to be treated LQ is supplied from the water inlet 33i by the water supply pump 32, the fluorescence intensity of the water to be treated LQ is measured by the fluorescence intensity meter 37A. The control unit 38 acquires the measured fluorescence intensity. Further, the hydrogen peroxide injection device 36 starts the generation of the hydrogen peroxide solution HS, and the ozone generator 31 starts the generation of the ozonized gas OG. Then, the control unit 38 starts the supply of the appropriate amount of the hydrogen peroxide solution HS to the water to be treated LQ based on the acquired fluorescence intensity. Further, the control unit 38 starts the supply of an appropriate amount of ozonized gas OG to the water to be treated LQ to which the hydrogen peroxide solution HS has been supplied.

From the one side of the ejector 33ej, the treated water LQ compressed to a high pressure by the water supply pump 32 is introduced. The water LQ to be treated is further compressed by passing through the throat portion 33th, which is the apex portion of the two cones, and is pushed toward the other side of the ejector 33ej. At this time, the bubbles of the ozonized gas OG in the water to be treated LQ are diffused and become finer bubbles. Thereby, gas-liquid contact of the ozonized gas OG is promoted, and the ozone gas OG can be more uniformly dissolved in the water to be treated LQ.

The ozonized gas OG and the hydrogen peroxide solution HS in the water to be treated LQ that has passed through the ejector 33ej and is supplied into the reaction container 33 are further mixed by the static mixer 35. As a result, the generation of OH radicals is promoted, and the organic matter in the water to be treated LQ is decomposed by the accelerated oxidation treatment. Then, the water to be treated LQ is discharged to the outside of the reaction container 33.

On the other hand, it is also possible to adjust the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG according to the state of the treated water LQ after the treatment. In this case, the fluorescence intensity of the water to be treated LQ is measured by the fluorescence intensity meter 37D at the water outlet 33o. The control unit 38 acquires the measured fluorescence intensity. The control unit 38 further adjusts the supply amounts of the hydrogen peroxide solution HS and the ozonized gas OG to the water to be treated LQ based on the acquired fluorescence intensity.

The treated water LQ discharged to the outside of the reaction container 33 is discharged to the outside of the water treatment device 30 via the water outlet 33o.

As described above, the treated water LQ is treated. At this time, as described above, the control unit 38 performs feedforward control or feedback control on the supply amounts of ozone and hydrogen peroxide to the water to be treated LQ. This is shown in FIG.

FIG. 11 is a schematic diagram illustrating feedforward control and feedback control in the water treatment device 30 according to the third embodiment. As shown in FIG. 11, the control unit 38 uses a fluorescence intensity meter 37A provided near the water inlet 33i to perform feedforward control on the water treatment in the reaction container 33. Alternatively, the control unit 38 uses the fluorescence intensity meter 37D provided near the water outlet 33o to perform feedback control on the water treatment in the reaction vessel 33.

The water treatment device 30 configured as described above can be connected, for example, in the middle of a pipe (not shown) through which the treated water LQ flows. That is, at the water inlet 33i of the water treatment device 30, the upstream end on the side opposite to the ejector 33ej side is connected to the upstream pipe. Further, in the water outlet 33o of the water treatment device 30, the downstream end on the side opposite to the reaction container 33 side is connected to the downstream pipe. The pipe may be a pipe that supplies the treated water LQ to another water treatment system. The water LQ to be treated supplied from the pipe to the other water treatment system via the water treatment device 30 can be further subjected to water treatment there. Alternatively, the pipe may be a pipe that supplies the treated water LQ to the retention tank. The water to be treated LQ supplied from the pipe to the retention tank via the water treatment device 30 is retained there.

The water treatment device 30 of the third embodiment also has the same effect as that of the first embodiment.

Further, in the water treatment device 30 of the third embodiment, the treated water LQ can be treated more efficiently with compact equipment.

[Other Embodiments]
In the above-described embodiment, the amount of organic matter in the water to be treated LQ is measured by the fluorescence intensity meters 17A, 17D, etc., but it is not limited to this. The amount of organic matter may be measured by, for example, an ultraviolet absorption meter, a total organic carbon (TOC: Total Organic Carbon) meter, or a combination of a fluorescence intensity meter, an ultraviolet absorption meter, and a total organic carbon meter.

Although hydrogen peroxide is used as the oxidation promoter in the above-described embodiment, the present invention is not limited to this. As the oxidation promoter, for example, ultraviolet rays, sodium hypochlorite or the like may be used.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the scope equivalent thereto.

10, 10a, 20, 20a Water treatment system 11 Ozone generator 12 Water supply pump 13A, 13B Reaction vessel 13C, 13D Communication path 13X Reaction vessel group 13Xi Water inlet 13Xo Water outlet 14HP, 14OZ Supply pipe 14Vhp, 14VAoz, 14VBoz 15 Valve Air unit 16 Hydrogen peroxide injection device 17A, 17D, 27C, 37A, 37D Fluorescence intensity meter 18, 18a, 28, 28a, 38 Control unit 30 Water treatment device DS Downflow HS Hydrogen peroxide water LQ Treated water OG Ozonization Gas US upflow

Claims (20)

A water treatment control device applied to a multi-stage water treatment device for sequentially treating water to be treated while passing through a reaction container group,
An oxidation accelerator supply unit configured to be installed at a water inlet for supplying the water to be treated to the reaction vessel group, and supplying an oxidation accelerator to the water inlet,
An ozone supply unit configured to be installed in the reaction container group and supplying ozone to the reaction container group,
A first organic matter amount measuring unit configured to be installed at the water inlet, for measuring the amount of organic matter in the untreated water before treatment;
A second organic matter amount measuring unit configured to be installed at a water outlet for discharging the treated water after treatment from the reaction vessel group, for measuring an amount of organic matter in the treated water after treatment;
Based on the organic matter amount measured by the first organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the oxidation promoter supply unit and the ozone to the reaction container group by the ozone supply unit. The amount of the oxidation promoter supplied to the water inlet by the oxidation promoter supply unit and the ozone supply unit based on the amount of the organic substance measured by the second organic substance amount measurement unit. A control unit configured to be able to adjust the supply amount of the ozone to the reaction container group according to
Water treatment control device. The control unit is
It is possible to supply the ozone by the ozone supply unit to the water to be treated in a state where the oxidation promoter is supplied by the oxidation promoter supply unit.
The water treatment control device according to claim 1. The first organic matter amount measuring unit is at least one of a fluorescence intensity meter, an ultraviolet absorptiometer, and a total organic carbon meter,
The second organic matter amount measurement unit is at least one of a fluorescence intensity meter, an ultraviolet absorptiometer, and a total organic carbon meter,
The water treatment control device according to claim 1. The oxidation promoter supply unit supplies hydrogen peroxide, irradiates ultraviolet rays, or supplies sodium hypochlorite,
The water treatment control device according to claim 1. A water treatment control device applied to a multi-stage water treatment device for sequentially treating water to be treated while passing through a reaction container group,
A first oxidation accelerator supply unit configured to be installed at a water inlet for supplying the water to be treated to the reaction vessel group and supplying an oxidation accelerator to the water inlet;
A second oxidation promoter supply unit configured to be installed in the reaction container group and supplying an oxidation promoter to the reaction container group;
An ozone supply unit configured to be installed in the reaction container group and supplying ozone to the reaction container group,
An organic substance that is configured to be installed between a first reaction container of the reaction container group and a second reaction container downstream of the first reaction container, and measures the amount of organic substances in the water to be treated during treatment. Quantity measuring unit,
Based on the organic matter amount measured by the organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the first oxidation promoter supply unit and the ozone supply unit to the first reaction container The supply amount of the ozone is adjusted, and the supply amount of the oxidation accelerator to the second reaction container by the second oxidation accelerator supply unit and the amount of the organic substance based on the organic substance amount measured by the organic substance amount measurement unit, and A controller configured to adjust the amount of ozone supplied to the second reaction container by the ozone supplier.
Water treatment control device. The second oxidation promoter supply unit is configured to be able to supply the oxidation promoter to at least the second reaction container independently of the first oxidation promoter supply unit,
The ozone supply unit is configured to be able to supply the ozone in different supply amounts to at least the first reaction container and the second reaction container, respectively.
The water treatment control device according to claim 5. The first reaction vessel and the second reaction vessel are adjacent to each other,
The control unit is
Based on the organic matter amount measured by the organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the first oxidation promoter supply unit and the first reaction container and the ozone supply unit by the ozone supply unit. The amount of ozone supplied to the reaction vessel on the upstream side of the first reaction vessel is adjusted, and based on the amount of the organic matter measured by the organic matter amount measuring unit, the second oxidation accelerator supplying unit performs the second Of the amount of the oxidation promoter supplied to the reaction container on the downstream side of the reaction container and the reaction container on the downstream side of the second reaction container, and on the downstream side of the second reaction container and the second reaction container by the ozone supply unit. The ozone supply amount to the reaction container is configured to be adjustable,
The water treatment control device according to claim 5. It is configured to be installable at the water inlet, and is provided with another organic matter amount measuring unit for measuring the amount of organic matter in the untreated water before treatment,
The control unit is
Not the amount of organic matter measured by the organic matter amount measurement unit, based on the amount of organic matter measured by the other organic matter amount measurement unit, of the oxidation promoter to the water inlet by the first oxidation promoter supply unit A supply amount and a supply amount of the ozone to the first reaction container by the ozone supply unit are adjustable.
The water treatment control device according to claim 5. A multi-stage water treatment device that sequentially treats water to be treated while passing through the reaction vessel group,
A water treatment control device applied to the water treatment device;
The water treatment device,
The reaction vessel group having a plurality of reaction vessels,
A water inlet for supplying the water to be treated to the reaction vessel group,
A water outlet for discharging the treated water from the reaction vessel group after treatment,
The water treatment control device,
An oxidation promoter supply unit installed at the water inlet to supply an oxidation promoter to the water inlet,
An ozone supply unit that is installed in the reaction container group and supplies ozone to the reaction container group,
A first organic matter amount measuring unit that is installed at the water inlet and measures the amount of organic matter in the untreated water before treatment;
A second organic matter amount measuring unit which is installed at the water outlet and measures the amount of organic matter in the treated water after treatment;
Based on the organic matter amount measured by the first organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the oxidation promoter supply unit and the ozone to the reaction container group by the ozone supply unit. The amount of the oxidation promoter supplied to the water inlet by the oxidation promoter supply unit and the ozone supply unit based on the amount of the organic substance measured by the second organic substance amount measurement unit. A control unit that adjusts the supply amount of the ozone to the reaction container group according to
Water treatment system. The control unit is
Causing the ozone supply unit to supply the ozone to the water to be treated in a state in which the oxidation promoter is supplied by the oxidation promoter supply unit,
The water treatment system according to claim 9. The first organic matter amount measuring unit is at least one of a fluorescence intensity meter, an ultraviolet absorptiometer, and a total organic carbon meter,
The second organic matter amount measurement unit is at least one of a fluorescence intensity meter, an ultraviolet absorptiometer, and a total organic carbon meter,
The water treatment system according to claim 9. The oxidation promoter supply unit supplies hydrogen peroxide,
The water treatment system according to claim 9. A multi-stage water treatment device that sequentially treats water to be treated while passing through the reaction vessel group,
A water treatment control device applied to the water treatment device;
The water treatment device,
The reaction vessel group having a plurality of reaction vessels,
A water inlet for supplying the water to be treated to the reaction vessel group,
A water outlet for discharging the treated water from the reaction vessel group after treatment,
The water treatment control device,
A first oxidation promoter supply unit which is installed at the water inlet and supplies an oxidation accelerator to the water inlet;
A second oxidation promoter supply unit that is installed in the reaction container group and supplies an oxidation promoter to the reaction container group;
An ozone supply unit that is installed in the reaction container group and supplies ozone to the reaction container group,
An organic matter amount measuring unit installed between a first reaction vessel of the reaction vessel group and a second reaction vessel downstream of the first reaction vessel to measure the amount of organic matter in the water to be treated during treatment. When,
Based on the organic matter amount measured by the organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the first oxidation promoter supply unit and the ozone supply unit to the first reaction container The supply amount of the ozone is adjusted, and the supply amount of the oxidation accelerator to the second reaction container by the second oxidation accelerator supply unit and the amount of the organic substance based on the organic substance amount measured by the organic substance amount measurement unit, and A controller that adjusts the amount of ozone supplied to the second reaction container by the ozone supplier.
Water treatment system. The second oxidation promoter supply unit is configured to be capable of supplying the oxidation promoter to at least the second reaction container independently of the first oxidation promoter supply unit,
The ozone supply unit is configured to be able to supply the ozone in different supply amounts to at least the first reaction container and the second reaction container, respectively.
The water treatment system according to claim 13. The first reaction vessel and the second reaction vessel are adjacent to each other,
The control unit is
Based on the amount of organic matter measured by the organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the first oxidation promoter supply unit, the first reaction container by the ozone supply unit, and the The amount of the ozone supplied to the reaction container on the upstream side of the first reaction container is adjusted, and the second oxidation accelerator supply unit controls the second amount based on the organic substance amount measured by the organic substance amount measuring unit. Supply amount of the oxidation promoter to the reaction container on the downstream side of the reaction container and the reaction container on the downstream side of the second reaction container, and on the downstream side of the second reaction container and the second reaction container by the ozone supply unit. Adjusting the amount of ozone supplied to the reaction vessel,
The water treatment system according to claim 13. Installed at the water inlet, equipped with another organic matter amount measuring unit for measuring the amount of organic matter in the untreated water before treatment,
The control unit is
Not the amount of organic matter measured by the organic matter amount measurement unit, based on the amount of organic matter measured by the other organic matter amount measurement unit, of the oxidation promoter to the water inlet by the first oxidation promoter supply unit Adjusting the supply amount and the supply amount of the ozone to the first reaction container by the ozone supply unit,
The water treatment system according to claim 13. A water treatment device for treating water to be treated while passing through a reaction vessel,
An inlet for supplying the water to be treated to the reaction vessel,
One end is connected to the water inlet and has a flow path of the water to be treated that reaches the reaction vessel, and the water to be treated is passed through the throat by passing a throat in which a part of the flow channel is narrowed An ejector that ejects to the side,
One end is connected to the other end of the ejector, the reaction container for treating the water to be treated,
A water outlet provided at the other end of the reaction vessel, for discharging the treated water after the treatment from the reaction vessel,
An oxidation promoter supply unit installed at the water inlet to supply an oxidation promoter to the water inlet,
An ozone supply unit installed on the throat of the ejector and supplying ozone to the ejector,
A first organic matter amount measuring unit that is installed at the water inlet and measures the amount of organic matter in the untreated water before treatment;
A second organic matter amount measuring unit which is installed at the water outlet and measures the amount of organic matter in the treated water after treatment;
Based on the organic matter amount measured by the first organic matter amount measuring unit, the supply amount of the oxidation promoter to the water inlet by the oxidation promoter supply unit and the supply of ozone to the ejector by the ozone supply unit. The amount of the oxidation accelerator supplied to the water inlet by the oxidation promoter supply unit and the ozone supply unit based on the amount of the organic matter measured by the second organic matter amount measurement unit. A control unit that adjusts the amount of ozone supplied to the ejector,
It is configured to be insertable in the middle of the pipe through which the water to be treated flows,
Water treatment equipment. The reaction vessel comprises a mixer for mixing the water to be treated in the reaction vessel,
The water treatment device according to claim 17. The reaction vessel comprises a static mixer for mixing the water to be treated in the reaction vessel,
The water treatment device according to claim 17. The upstream end of the water inlet is configured to be connectable to the upstream pipe, and the downstream end of the water outlet is configured to be connectable to the downstream pipe so that it can be inserted in the middle of the pipe. Will be
The water treatment device according to claim 17.

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