JP2007260632A - Ion exchange resin regeneration device, water treatment system equipped with the regeneration device, and control method for the water treatment system - Google Patents

Abstract

To provide an ion exchange resin regenerator capable of sufficiently suppressing the occurrence of scale, sludge, corrosion and the like and suppressing the frequency of ion exchange resin regeneration.
An ion exchange resin regenerator 20 includes a regenerator 21 in which an ion exchange resin 211 is accommodated, and an acid supply unit 22 and an alkali supply unit that supply regenerated water to the regenerator 21 via a regenerated water supply path 24. And a reclaimed water discharge port for discharging the reclaimed water that has passed through the regenerator 21 via the reclaimed water discharge path 25. The regenerator 20 includes a supply flow meter 246 that detects the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin 211 when the regenerated water passes through the regenerator 21, a discharge channel pH meter 251, and a discharge channel. A flow meter 252 is further provided.
[Selection] Figure 1

Description

  The present invention relates to an ion exchange resin regeneration device, a water treatment system including an ion exchange resin regeneration device, and a control method for the water treatment system.

Raw water such as groundwater, river water, and tap water is used as cooling water in cooling devices such as boilers in power plants. In the raw water, various ions such as calcium ions and magnesium ions such as magnesium ions and silica ions (SiO ₂ ⁻ ) are dissolved, and these ions cause scale, sludge, corrosion, etc. in the cooling device. It has become.
Therefore, attention has been paid to a water treatment device that removes ions from raw water circulating in the cooling device.

A conventional water treatment apparatus has a flow path through which water flows and ion exchange means provided in the middle of the flow path and containing an ion exchange resin.
According to such a water treatment apparatus, since the ion exchange means is provided in the middle of the flow path, ions contained in the water flowing through the flow path are adsorbed by the ion exchange resin, so that the ions can be removed.

  By the way, as the adsorption amount of ions increases, the ion adsorption ability of the ion exchange resin decreases. Therefore, in order to recover the ion adsorption capacity, it is necessary to regenerate the ions adsorbed on the ion exchange resin at a predetermined timing.

Therefore, the conventional water treatment apparatus includes a flow path through which water flows, ion exchange means provided in the middle of the flow path and containing ion exchange resin, and presence of ions leaked into the water that has passed through the ion exchange means. Leakage detection means for detecting (see, for example, Patent Document 1).
According to such a water treatment apparatus, since the leakage detection means is provided, when ions are detected by the leakage detection means, it can be determined that the ion adsorption capacity of the ion exchange resin is insufficient. For this reason, after the detection of the ions by the detection means, the ion exchange resin accommodated in the ion exchange means is regenerated.
JP 2001-205261 A

  However, according to the water treatment apparatus disclosed in Patent Document 1 described above, at the stage where the leakage detection means has detected ions, the ions have already passed through the ion exchange means without being adsorbed to the cooling device. It has been introduced. For this reason, scale, sludge, corrosion, etc. may occur.

  In addition, for some reason, water containing ions such as seawater at a high concentration may flow into the flow path. In such a case, since ions leak out rapidly, a large amount of ions are leaked out when the leakage detection means detects the ions, so that a large amount of scale, sludge, corrosion, etc. occur. Thus, the safety | security with respect to the situation where the water contained in high concentration flows in was not enough.

  In order to solve the above problems, it is possible to take measures such as regenerating the ion exchange resin at an early stage. However, in this measure, the frequency of regeneration of the ion exchange resin is inevitably high, and the progress of deterioration of the ion exchange resin due to swelling shrinkage or the like during regeneration is accelerated.

  The present invention has been made in view of the above problems, and a regeneration device, a water treatment system, and a water treatment system that can sufficiently suppress the occurrence of scale, sludge, corrosion, and the like, and can suppress the regeneration frequency of an ion exchange resin. It is an object to provide a control method.

  The present inventors have found that an appropriate regeneration condition of an ion exchange resin can be specified by detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin during regeneration of the ion exchange resin, and the present invention. It came to complete.

  Specifically, the present invention provides the following.

(1) Resin storage means for storing an ion exchange resin, reclaimed water supply means for supplying regenerated water containing acid or base to the resin storage means via a reclaimed water supply path, and the resin storage via a reclaimed water discharge path A reclaimed water discharge means for discharging reclaimed water that has passed through the means, and a regenerating apparatus for ion exchange resin comprising:
A regenerating apparatus further comprising regenerated water detecting means for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by passing the regenerated water through the resin containing means.

  According to the invention of (1), since the regenerated water detection means is provided in the regenerator, the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin is detected. The exchange capacity can be grasped.

Therefore, the following usage modes can be taken.
First, the lower limit value of the ion exchange capacity that can prevent leakage of ions with a desired safety factor is set in consideration of the possibility of occurrence of a situation where water containing a high concentration flows. Then, the difference between the ion exchange capacity of the regenerated ion exchange resin grasped as described above and the lower limit value of the ion exchange capacity is calculated.
By causing the ions to be exchanged to be adsorbed on the ion exchange resin without excess or deficiency, the occurrence of scale, sludge, corrosion, etc. can be sufficiently suppressed and the regeneration frequency of the ion exchange resin can be suppressed.

(2) In the playback device described in (1),
The reclaimed water detection means comprises: feed water detection means for detecting the amount of hydrogen ions or hydroxide ions contained in the reclaimed water supplied to the ion exchange resin;
And a passing water detecting means for detecting the amount of hydrogen ions or hydroxide ions contained in the recycled water that has passed through the resin containing means.

  According to the invention of (2), since the supply water detection means and the passing water detection means are provided in the regeneration water detection means, the amount of hydrogen ions or hydroxide ions contained in the regeneration water supplied to the ion exchange resin, and The amount of hydrogen ions or the amount of hydroxide ions contained in the reclaimed water that has passed through the resin storage means is detected. For this reason, the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin is detected only by calculating these differences, and therefore the ion exchange capacity of the regenerated ion exchange resin can be easily grasped.

  Therefore, it is possible to easily suppress the occurrence of scale, sludge, corrosion, etc. and to suppress the frequency of regeneration of the ion exchange resin.

(3) a water treatment device having a flow path through which water flows and an ion exchange means provided in the middle of the flow path and containing an ion exchange resin;
A water treatment system comprising: the regeneration device according to (1) or (2), which regenerates an ion exchange resin accommodated in the ion exchange means.

  According to the invention of (3), since the reproducing device described in (1) or (2) is adopted, the same effect as that of the invention of (1) or (2) can be obtained.

(4) In the water treatment system according to (3),
An informing means for informing instruction information for instructing conveyance of the ion exchange resin contained in the ion exchange means to the resin containing means;
Control means for controlling the water treatment system,
The water treatment device further includes raw water detection means for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by passing the water through the ion exchange means,
The control means includes notification determining means for activating the notification means when the detection value by the raw water detection means has reached a first predetermined ratio of the detection value by the reclaimed water detection means. Water treatment system.

According to the invention of (4), the water treatment system operates as follows.
First, the lower limit value of the ion exchange capacity that can prevent leakage of ions with a desired safety factor is set in consideration of the possibility of occurrence of a situation where water containing a high concentration flows. The regenerated water detection means detects the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin, and grasps the ion exchange capacity of the regenerated ion exchange resin. The difference between the recognized ion exchange capacity of the regenerated ion exchange resin and the lower limit value of the above-mentioned ion exchange capacity is calculated. For example, the ratio of the difference in the ion exchange capacity of the regenerated ion exchange resin is defined as the first predetermined ratio.
Next, the regenerated ion exchange resin is accommodated in the ion exchange means, and water treatment is started. The raw water detection means detects the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin when water passes through the ion exchange means.
The notification determination unit activates the notification unit when the detection value by the raw water detection unit has reached the first predetermined ratio of the detection value by the reclaimed water detection unit.

  Therefore, when the ion exchange capacity falls below the lower limit of the ion exchange capacity that can prevent the leakage of ions with a desired safety factor, the instruction information is notified, so that it is possible to suppress the loss of the timing for regenerating the ion exchange resin. .

  Here, the “first predetermined ratio” means that the difference between the ion exchange capacity of the ion exchange resin and the lower limit value of the ion exchange capacity at which a desired safety factor is obtained occupies the ion exchange capacity of the ion exchange resin. Refers to the percentage. In addition, the “lower limit value of the ion exchange capacity” may be set in consideration of leakage of ions from the time when the notification unit is activated until the start of conveyance of the ion exchange resin to the resin storage unit. preferable.

(5) In the water treatment system according to (4),
A plurality of the ion exchange means are provided in parallel in the middle of the flow path,
The raw water detection means detects the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin accommodated in each of the ion exchange means,
The water treatment apparatus further includes switching means for switching the ion exchange means through which the water passes,
The control means further includes a switching determination means for activating the switching means when the detection value by the raw water detection means has reached a second predetermined ratio of the detection value by the reclaimed water detection means. Water treatment system.

  According to the invention of (5), since the switching means and the switching determination means are provided, when the detection value by the raw water detection means has reached the second predetermined ratio of the detection value by the reclaimed water detection means, the switching determination means Activates the switching means. As a result, the ion exchange means through which water passes is switched, and the water flows to the ion exchange means having a sufficient ion exchange capacity, so that ion leakage can be more reliably suppressed.

  Here, the switching determination means controls the switching means so as to switch to an ion exchange means having an ion exchange capacity exceeding the lower limit value of the ion exchange capacity, which can prevent leakage of ions with a desired safety factor.

  Here, the “second predetermined ratio” is preferably set to be equal to or greater than the “first predetermined ratio”. Thus, even when the ion exchange resin is not transported to the resin storage means after the notification means is activated, the switching means switches the ion exchange means, so that leakage of ions can be suppressed.

(6) A water treatment device having a flow path through which water flows and an ion exchange means provided in the middle of the flow path and containing an ion exchange resin, and regenerating the ion exchange resin contained in the ion exchange means A method for controlling a water treatment system comprising the regenerating apparatus according to (1) or (2),
Regenerated water detection procedure for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by passing the regenerated water through the ion exchange means;
Raw water detection procedure for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by allowing the water to pass through the resin containing means;
If the detection value in the raw water detection procedure has reached the first predetermined ratio of the detection value in the reclaimed water detection procedure, an instruction is given to convey the ion exchange resin stored in the ion exchange means to the resin storage means. A water treatment system control method comprising: a notification procedure for reporting instruction information to be performed.

The control method described in (6) is obtained by developing the water treatment system described in (3) to (5) as a control method.
Therefore, according to the invention of (6), the same effects as (3) to (5) can be obtained.

According to the present invention, since the regenerated water detection means is provided in the regenerator, the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin is detected, so that the ion exchange capacity of the regenerated ion exchange resin is increased. I can grasp.
Therefore, the ion exchange capacity of the regenerated ion exchange resin that has been grasped and the possibility that a situation in which water containing a high concentration will flow in will be taken into consideration, and leakage of ions can be prevented with a desired safety factor. The ion exchange resin is adsorbed to the ion to be exchanged by the difference between the lower limit value of the ion exchange capacity set in this way and the generation of scale, sludge, corrosion, etc. is sufficiently suppressed. And the regeneration frequency of the ion exchange resin can be suppressed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the description of each embodiment other than the first embodiment, the same reference numerals are given to those common to the first embodiment, and the description thereof is omitted or simplified.

<First Embodiment>
FIG. 1 is a block diagram of a water treatment system 1 according to the first embodiment of the present invention.
The water treatment system 1 includes a water treatment device 10 and a regeneration device 20.

  The water treatment apparatus 10 includes a raw water flow path 11 as a flow path through which raw water as an example of water flows, and an ion exchanger as an ion exchange means provided in the middle of the raw water flow path 11 and containing an ion exchange resin 121. 12 and.

  The raw water flowing through the raw water flow path 11 is supplied from the condenser 80, passes through the ion exchanger 12, and is introduced into the boiler 90.

  A raw water supply valve 113, a raw water flow meter 111 and an ion concentration measuring device 112 as raw water detection means are provided upstream of the ion exchanger 12 in the raw water flow path 11. A raw water discharge valve 114 is provided downstream of the ion exchanger 12 in the raw water channel 11.

  Here, as the ion concentration measuring device 112, one that can detect both the cation concentration and the anion concentration is used. In the present embodiment, the ion concentration measuring device 112 is provided in the branch path 115 where the raw water flow path 11 is branched, but is not limited thereto.

  The ion exchange resin 121 includes a cation exchange resin and an anion exchange resin. These cation exchange resin and anion exchange resin are arranged in series along the direction in which the raw water flows.

  The regenerator 20 includes a regenerator 21 serving as a resin storage unit that stores the ion exchange resin 211, an acid supply unit 22 serving as a regenerated water supply unit that supplies regenerated water to the regenerator 21 via a regenerated water supply path 24, and an alkali. It has a supply water 23 and a reclaimed water discharge port as reclaimed water discharge means (not shown) for discharging reclaimed water that has passed through the regenerator 21 via the reclaimed water discharge path 25.

  The ion exchange resin 211 has a cation exchange resin and an anion exchange resin. These cation exchange resin and anion exchange resin are arranged in series along the direction in which the recycled water flows.

  The reclaimed water supply path 24 communicates with the acid supplier 22 via the acid supply path 241 and to the alkali supplier 23 via the alkali supply path 242. In the middle of the reclaimed water supply path 24, a supply path flowmeter 246 is provided as supply water detection means. An acid supply valve 243 is provided in the middle of the acid supply path 241, and an alkali supply valve 244 is provided in the middle of the alkali supply path 242.

  Further, in the middle of the reclaimed water discharge path 25, a discharge path pH meter 251 and a discharge path flow meter 252 are provided as passing water detection means.

  The supply path flow meter 246, the discharge path pH meter 251 and the discharge path flow meter 252 constitute a reclaimed water detection means.

The operation of the water treatment system 1 is as follows.
[Regeneration of ion exchange resin]
First, the raw water supply valve 113, the raw water discharge valve 114, the acid supply valve 243, and the alkali supply valve 244 are all closed. Then, acidic regenerated water having a known hydrogen ion concentration is introduced into the acid supplier 22, and alkaline reclaimed water having a known hydroxide ion concentration is introduced into the alkali supplier 23.

  Here, when the acid supply valve 243 is opened, acidic reclaimed water is supplied from the acid supplier 22 to the ion exchange resin 211 via the acid supply path 241 and the reclaimed water supply path 24. The flow rate of reclaimed water (hereinafter referred to as feed water) flowing through the reclaimed water supply channel 24 is measured by a supply channel flow meter 246.

  Hydrogen ions contained in the reclaimed water supplied to the ion exchange resin 211 are exchanged with cations adsorbed on the ion exchange resin 211. That is, hydrogen ions are adsorbed on the cation exchange resin constituting the ion exchange resin 211, and cations are released from the ion exchange resin 211. The reclaimed water containing the released cations passes through the regenerator 21 and flows in the reclaimed water discharge path 25 to the reclaimed water discharge port. The flow rate of reclaimed water flowing through the reclaimed water discharge channel 25 (hereinafter referred to as passing water) is measured by a discharge channel flow meter 252, and the amount of hydrogen ions contained in the passing water is measured by a discharge channel pH meter 251.

  Subsequently, after the acid supply valve 243 is closed, the alkali supply valve 244 is opened, whereby alkaline regenerated water is supplied from the alkali supply device 23 to the ion exchange resin 211 via the alkali supply path 242 and the regenerated water supply path 24. Is done. As described above, the flow rate of the supply water is measured by the supply channel flow meter 246.

  Hydroxide ions contained in the reclaimed water supplied to the ion exchange resin 211 are exchanged with anions adsorbed on the ion exchange resin 211. That is, hydroxide ions are adsorbed on the anion exchange resin constituting the ion exchange resin 211 and anions are released from the ion exchange resin 211. The reclaimed water containing the released anions passes through the regenerator 21 and flows through the reclaimed water discharge path 25 to the reclaimed water discharge port. As described above, the flow rate of the passing water is measured by the discharge channel flow meter 252, and the amount of hydroxide ions contained in the passing water is measured by the discharge channel pH meter 251.

  A product obtained by multiplying the known hydrogen ion concentration and the detection value by the supply channel flowmeter 246 corresponds to the amount of hydrogen ions contained in the supply water. On the other hand, the product of the detection value by the discharge channel flow meter 252 and the detection value by the discharge channel pH meter 251 corresponds to the amount of hydrogen ions contained in the passing water. Therefore, by calculating these differences, the amount of hydrogen ions adsorbed on the cation exchange resin constituting the ion exchange resin 211 is obtained.

  Similarly, the product of the known hydroxide ion concentration and the detection value by the supply channel flowmeter 246 corresponds to the amount of hydroxide ions contained in the supply water. On the other hand, the product of the detection value by the discharge channel flow meter 252 and the detection value by the discharge channel pH meter 251 corresponds to the amount of hydroxide ions contained in the passing water. Therefore, by calculating these differences, the amount of hydroxide ions adsorbed on the anion exchange resin constituting the ion exchange resin 211 is obtained.

[Use of ion exchange resin]
The ion exchange resin 211 regenerated in this way is desorbed from the regenerator 21 and accommodated in the ion exchanger 12. Here, when the raw water supply valve 113 and the raw water discharge valve 114 are opened, the raw water is introduced from the condenser 80 into the ion exchange resin 121 accommodated in the ion exchanger 12 through the raw water flow path 11. The flow rate of the raw water flowing through the raw water flow channel 11 is measured by the raw water flow meter 111, and the ion concentration contained in the raw water is measured by the ion concentration measuring device 112.

  Of the ions contained in the raw water introduced into the ion exchange resin 121, the cation is adsorbed on the cation exchange resin of the ion exchange resin 121 and the anion is on the anion exchange resin of the ion exchange resin 121. Each is exchanged with the adsorbed hydroxide ion. That is, cations and anions in the raw water are adsorbed on the ion exchange resin 121, and hydrogen ions and hydroxide ions are released from the ion exchange resin 121. The discharged raw water passes through the ion exchanger 12 and flows again to the boiler 90 in the raw water flow path 11.

  The product obtained by multiplying the detection value by the raw water flow meter 111 and the detection value by the ion concentration measuring device 112 corresponds to the amount of ions contained in the raw water that has passed through the ion exchanger 12.

  When the amount of cations contained in the raw water reaches a predetermined ratio of the amount of hydrogen ions adsorbed on the ion exchange resin 211, or the amount of anions contained in the raw water is adsorbed on the ion exchange resin 211 When the predetermined ratio of the amount of substance ions is reached, the raw water supply valve 113 and the raw water discharge valve 114 are closed. Then, the ion exchange resin 121 is detached from the ion exchanger 12 and accommodated in the regenerator 21, and the ion exchange resin is regenerated by the operation as described above.

According to this embodiment, the following effects can be obtained.
(A) Since the supply channel flow meter 246, the discharge channel pH meter 251 and the discharge channel flow meter 252 are provided in the regenerator 20, the amount of hydrogen ions and hydroxide ions adsorbed on the ion exchange resin 211 are detected. Thus, the ion exchange capacity of the regenerated ion exchange resin 211 can be grasped.
Therefore, taking into account the ion exchange capacity of the regenerated ion exchange resin 211 that has been grasped and the possibility that a high concentration of water will flow in, as appropriate, prevent leakage of ions with a desired safety factor. Adsorption of ions to be exchanged onto the ion exchange resin 121 without excess or deficiency by the difference between the ion exchange capacity and the lower limit of the ion exchange capacity set to allow sufficient generation of scale, sludge, corrosion, etc. And the regeneration frequency of the ion exchange resin can be suppressed.

(B) Since the supply path flow meter 246, the discharge path pH meter 251 and the discharge path flow meter 252 are provided in the regenerator 20, hydrogen ions contained in the reclaimed water supplied to the ion exchange resin 211 by the supply path flow meter 246 The amount and the amount of hydroxide ions, and the amount of hydrogen ions and the amount of hydroxide ions contained in the reclaimed water that has passed through the regenerator 21 are detected by the discharge channel pH meter 251 and the discharge channel flow meter 252, respectively. For this reason, the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin 211 is detected simply by calculating the difference between them, so that the ion exchange capacity of the regenerated ion exchange resin 211 can be easily grasped. it can.
Therefore, it is possible to easily suppress the occurrence of scale, sludge, corrosion, etc. and to suppress the frequency of regeneration of the ion exchange resin.

Second Embodiment
FIG. 2 is a block diagram of a water treatment system 1A according to the second embodiment of the present invention.
In the present embodiment, the structure of the playback device 20A is different from that of the first embodiment.
That is, the regenerator 20A further includes a supply path pH meter 245 provided in the middle of the reclaimed water supply path 24A. In the present embodiment, the supply path pH meter 245 and the supply path flow meter 246 constitute supply water detection means, and the discharge path pH meter 251 and the discharge path flow meter 252 constitute passage water detection means. The supply path pH meter 245, the supply path flow meter 246, the discharge path pH meter 251, and the discharge path flow meter 252 constitute a reclaimed water detection means.

Such an operation of the water treatment system 1A differs from the first embodiment in the following points.
That is, the raw water supply valve 113, the raw water discharge valve 114, the acid supply valve 243, and the alkali supply valve 244 are all closed. Then, acidic reclaimed water is introduced into the acid supplier 22, and alkaline reclaimed water is introduced into the alkali supplier 23. The acidic regenerated water and alkaline reclaimed water may have known or unknown hydrogen ion concentration and hydroxide ion concentration.

  Here, when the acid supply valve 243 is opened, acidic reclaimed water is supplied from the acid supplier 22 to the ion exchange resin 211 via the acid supply path 241 and the reclaimed water supply path 24. The hydrogen ion concentration contained in the supply water is measured by a supply channel pH meter 245, and the flow rate of the supply water is measured by a supply channel flow meter 246.

  A product obtained by multiplying the detection value by the supply channel pH meter 245 and the detection value by the supply channel flow meter 246 corresponds to the amount of hydrogen ions contained in the supply water. On the other hand, the product of the detection value by the discharge channel flow meter 252 and the detection value by the discharge channel pH meter 251 corresponds to the amount of hydrogen ions contained in the passing water. Therefore, by calculating these differences, the amount of hydrogen ions adsorbed on the cation exchange resin constituting the ion exchange resin 211 is obtained.

  Next, after the acid supply valve 243 is closed, the alkali supply valve 244 is opened, whereby alkaline regenerated water is supplied from the alkali supply device 23 to the ion exchange resin 211 via the alkali supply path 242 and the regenerated water supply path 24. Is done. As described above, the hydroxide ion concentration contained in the supply water is measured by the supply channel pH meter 245, and the flow rate of the supply water is measured by the supply channel flow meter 246.

  A product obtained by multiplying the detection value by the supply channel pH meter 245 and the detection value by the supply channel flow meter 246 corresponds to the amount of hydroxide ions contained in the supply water. On the other hand, the product of the detection value by the discharge channel flow meter 252 and the detection value by the discharge channel pH meter 251 corresponds to the amount of hydroxide ions contained in the passing water. Therefore, by calculating these differences, the amount of hydroxide ions adsorbed on the cation exchange resin constituting the ion exchange resin 211 is obtained.

According to this embodiment, in addition to the operational effects of the first embodiment described above, the following operational effects are obtained.
(C) Since the supply channel pH meter 245 is further provided in the regenerator 20A, even if the hydrogen ion concentration and hydroxide ion concentration contained in the reclaimed water are not known, they are contained in the reclaimed water supplied to the ion exchange resin 211. The amount of hydrogen ions and hydroxide ions to be calculated can be calculated.
Therefore, since the procedure for specifying the amount of hydrogen ions and hydroxide ions in the reclaimed water can be omitted in advance, the generation of scale, sludge, corrosion, etc. can be more easily suppressed and the regeneration frequency of the ion exchange resin can be suppressed. it can.

<Third Embodiment>
FIG. 3 is a block diagram of a water treatment system 1B according to the third embodiment of the present invention.
In the present embodiment, the configuration of the water treatment system 1B is different from that of the second embodiment.
That is, the water treatment system 1B includes a notification unit 30 as notification means for notifying instruction information that instructs conveyance of the ion exchange resin 121 accommodated in the ion exchanger 12 to the ion exchange resin 211, and the water treatment system 1B. And an arithmetic device 40 including a control unit 42 as control means for controlling.
The notification unit 30 includes a monitor 31 and a speaker 32 and is connected to a calculation unit 41 described later.

FIG. 4 is a block diagram of the arithmetic device 40.
The calculation device 40 includes a calculation unit 41, a supply path pH meter 245 and a supply path flow meter 246 as supply water detection means, a discharge path pH meter 251 and a discharge path flow meter 252 as passage water detection means, and raw water detection. A raw water flow meter 111 and an ion concentration measuring device 112 are provided as means.

The supply channel pH meter 245 measures the hydrogen ion concentration and the hydroxide ion concentration contained in the supply water, and transmits them to the calculation unit 41.
The supply channel flow meter 246 measures the flow rate of the supply water and transmits it to the calculation unit 41.
The discharge channel pH meter 251 measures the hydrogen ion concentration and the hydroxide ion concentration contained in the passing water, and transmits them to the calculation unit 41.
The discharge channel flow meter 252 measures the flow rate of the passing water and transmits it to the calculation unit 41.
The raw water flow meter 111 measures the flow rate of the raw water and transmits it to the calculation unit 41.
The ion concentration measuring device 112 measures the ion concentration contained in the raw water and transmits it to the calculation unit 41.

  The calculation unit 41 includes a calculation unit 411 and a control unit 42 as control means. The control unit 42 includes a notification determination unit 421 as notification determination means.

  The calculation unit 411 calculates the amount of hydrogen ions and hydroxide ions contained in the supplied water, the amount of hydrogen ions and hydroxide ions contained in the passing water, and the amount of ions contained in raw water. Specifically, the amount of hydrogen ions and the amount of hydroxide ions contained in the supply water are calculated based on the detection value of the supply channel pH meter 245 and the detection value of the supply channel flow meter 246, and the discharge channel pH meter 251 Based on the detected value and the detected value of the discharge flow meter 252, the amount of hydrogen ions and the amount of hydroxide ions contained in the passing water are calculated, and the hydrogen adsorbed on the ion exchange resin 211 by calculating the difference between them. The amount of ions and the amount of hydroxide ions are calculated. The calculation unit 411 calculates the amount of ions contained in the raw water based on the detection value of the raw water flow meter 111 and the detection value of the ion concentration measuring device 112.

  The notification determination unit 421 determines whether to activate the monitor 31 and the speaker 32. Specifically, based on the calculation result by the calculation unit 411, the amount of ions contained in the raw water is a first predetermined ratio of the amount of hydrogen ions and the amount of hydroxide ions adsorbed on the ion exchange resin 211 (for example, 80%), the monitor 31 and the speaker 32 are activated.

  The activated monitor 31 and speaker 32 output predetermined images and sounds, respectively, and notify instruction information for instructing transport of the ion exchange resin 121 to the regenerator 21. The notification mode is not particularly limited. For example, the monitor 31 may display a message “Please regenerate the ion exchange resin” and the speaker 32 may output the sound. Alternatively, the speaker 32 may output a constant alarm sound.

The operation of the above water treatment system 1B will be described with reference to FIG.
First, the ion exchange resin 211 is regenerated (ST1). Specifically, when the raw water supply valve 113, the raw water discharge valve 114, the acid supply valve 243, and the alkali supply valve 244 are all closed and then the acid supply valve 243 is opened, acidic regenerated water is supplied from the acid supplier 22 to the acid supply. It is supplied to the ion exchange resin 211 via the path 241 and the recycled water supply path 24. Hydrogen ions contained in the supplied water are exchanged with cations adsorbed on the ion exchange resin 211. The reclaimed water containing the released cations passes through the regenerator 21 and flows in the reclaimed water discharge path 25 to the reclaimed water discharge port. Subsequently, after the acid supply valve 243 is closed, the alkali supply valve 244 is opened, whereby alkaline regenerated water is supplied from the alkali supply device 23 to the ion exchange resin 211 via the alkali supply path 242 and the regenerated water supply path 24. Is done. Hydroxide ions contained in the supplied water are exchanged with anions adsorbed on the ion exchange resin 211. The reclaimed water containing the released anions passes through the regenerator 21 and flows through the reclaimed water discharge path 25 to the reclaimed water discharge port.

  Subsequently, the calculation unit 411 calculates the amount of hydrogen ions and hydroxide ions contained in the supply water, the amount of hydrogen ions and hydroxide ions contained in the passing water, and the amount of ions contained in the raw water. (ST2). Specifically, the amount of hydrogen ions and the amount of hydroxide ions contained in the supply water are calculated based on the detection value of the supply channel pH meter 245 and the detection value of the supply channel flow meter 246, and the discharge channel pH meter 251 Based on the detected value and the detected value of the discharge flow meter 252, the amount of hydrogen ions and the amount of hydroxide ions contained in the passing water are calculated, and the hydrogen adsorbed on the ion exchange resin 211 by calculating the difference between them. The amount of ions and the amount of hydroxide ions are calculated.

  Next, after the regenerated ion exchange resin 211 is desorbed from the regenerator 21 and accommodated in the ion exchanger 12, a desalting process of raw water is started (ST3). Specifically, by opening the raw water supply valve 113 and the raw water discharge valve 114, raw water is introduced from the condenser 80 through the raw water flow path 11 into the ion exchange resin 121 accommodated in the ion exchanger 12. The Of the ions contained in the raw water introduced into the ion exchange resin 121, the cation is adsorbed on the cation exchange resin of the ion exchange resin 121 and the anion is on the anion exchange resin of the ion exchange resin 121. Each is exchanged with the adsorbed hydroxide ion. The discharged raw water passes through the ion exchanger 12 and flows again to the boiler 90 in the raw water flow path 11.

  Simultaneously with the start of the desalting treatment of the raw water, detection of the amount of ions contained in the raw water is started (ST4). Specifically, the raw water flow meter 111 measures the flow rate of the raw water flowing through the raw water flow path 11, and the ion concentration measuring device 112 measures the ion concentration contained in the raw water. Then, the calculation unit 411 calculates the amount of ions contained in the raw water based on the detection value of the raw water flow meter 111 and the detection value of the ion concentration measuring device 112.

  Subsequently, the notification determination unit 421 determines whether or not the amount of cations contained in the raw water has reached a predetermined ratio of the amount of hydrogen ions adsorbed on the ion exchange resin 211, and whether the amount of anions contained in the raw water is an ion. It is determined whether or not a predetermined ratio of the amount of hydroxide ions adsorbed on the exchange resin 211 has been reached (ST5). If this determination is “NO”, the process returns to ST4 and continues to detect the amount of ions in the raw water.

  On the other hand, when the determination in ST5 is “YES”, the notification determination unit 421 activates the monitor 31 and the speaker 32, and the monitor 31 and the speaker 32 notify the regeneration instruction of the ion exchange resin 121 (ST6). .

According to this embodiment, in addition to the operational effects of the second embodiment described above, the following operational effects are obtained.
(D) Since the notification unit 30 and the arithmetic unit 40 including the control unit 42 are further provided in the water treatment system 1B, the remaining amount of the ion exchange capacity of the ion exchange resin 121 leaks ions with a desired safety factor. If the ion exchange capacity is less than the lower limit value of the ion exchange capacity, the instruction information is notified by the notification unit 30. For this reason, it can suppress that the timing which should reproduce | regenerate the ion exchange resin 121 is lost.

<Fourth embodiment>
FIG. 6 is a block diagram of a water treatment system 1C according to the fourth embodiment of the present invention.
In the present embodiment, the structures of the water treatment device 10C and the arithmetic device 40C are different from those of the third embodiment.
That is, the water treatment apparatus 10C includes a raw water flow channel 11Ca, a raw water flow channel 11Cb, and a raw water flow channel 11Cc arranged in parallel. In the middle of these raw water channels 11Ca to 11Cc, an ion exchanger 12a to an ion exchanger 12c, a raw water flow meter 111a to a raw water flow meter 111c, an ion concentration measuring device 112a to an ion concentration measuring device 112c, and a raw water supply valve 113a to raw water supply valve 113c and raw water discharge valve 114a to raw water discharge valve 114c are provided, respectively. Here, the raw water supply valve 113a to the raw water supply valve 113c and the raw water discharge valve 114a to the raw water discharge valve 114c are respectively connected to the calculation unit 41C and configured to be independently controllable. Accordingly, the raw water supply valve 113a to the raw water supply valve 113c and the raw water discharge valve 114a to the raw water discharge valve 114c constitute a switching unit.

  The raw water flow meter 111a to the raw water flow meter 111c and the ion concentration measuring device 112a to the ion concentration measuring device 112c are replaced with the ion exchange resin 121a to the ion exchange resin 121c accommodated in each of the ion exchanger 12a to the ion exchanger 12c. The amount of adsorbed hydrogen ions and hydroxide ions are detected.

FIG. 7 is a block diagram of the arithmetic device 40C.
The control unit 42C constituting the calculation unit 41C further includes a switching determination unit 422. The switching determination unit 422 determines whether to switch the ion exchanger through which raw water passes. Specifically, based on the result of calculation by the calculation unit 411, the amount of ions contained in the raw water is a second predetermined ratio of the amount of hydrogen ions and the amount of hydroxide ions adsorbed on the ion exchange resin 211 (for example, 85%), it is determined that the ion exchanger through which the raw water passes is changed by changing the open / closed status of the raw water supply valve 113a to the raw water supply valve 113c and the raw water discharge valve 114a to the raw water discharge valve 114c. Switch.

  For example, when the ion exchanger 12a performs the desalination treatment of raw water, only the raw water supply valve 113a and the raw water discharge valve 114a among the raw water supply valve 113a to the raw water supply valve 113c and the raw water discharge valve 114a to the raw water discharge valve 114c are opened. ing. Here, when it is determined that the amount of ions contained in the raw water has reached the second predetermined ratio (for example, 85%) of the amount of hydrogen ions and the amount of hydroxide ions adsorbed on the ion exchange resin 211, the raw water While closing the supply valve 113a and the raw water discharge valve 114a and opening either the raw water supply valve 113b and the raw water discharge valve 114b, or the raw water supply valve 113c and the raw water discharge valve 114c, the ion exchanger through which the raw water passes is turned off. Change.

The operation of the above water treatment system 1C will be described with reference to FIG.
First, the ion exchange resin 211 is regenerated (ST1). Specifically, after all of the raw water supply valve 113a to the raw water supply valve 113c, the raw water discharge valve 114a to the raw water discharge valve 114c, the acid supply valve 243, and the alkali supply valve 244 are closed, the acid supply valve 243 is opened, Reclaimed water is supplied from the acid supplier 22 to the ion exchange resin 211 via the acid supply path 241 and the reclaimed water supply path 24. Hydrogen ions contained in the supplied water are exchanged with cations adsorbed on the ion exchange resin 211. The reclaimed water containing the released cations passes through the regenerator 21 and flows in the reclaimed water discharge path 25 to the reclaimed water discharge port. Subsequently, after the acid supply valve 243 is closed, the alkali supply valve 244 is opened, whereby alkaline regenerated water is supplied from the alkali supply device 23 to the ion exchange resin 211 via the alkali supply path 242 and the regenerated water supply path 24. Is done. Hydroxide ions contained in the supplied water are exchanged with anions adsorbed on the ion exchange resin 211. The reclaimed water containing the released anions passes through the regenerator 21 and flows through the reclaimed water discharge path 25 to the reclaimed water discharge port.

  Subsequently, the calculation unit 411 calculates the amount of hydrogen ions and hydroxide ions contained in the supply water, the amount of hydrogen ions and hydroxide ions contained in the passing water, and the amount of ions contained in the raw water. (ST2). Specifically, the amount of hydrogen ions and the amount of hydroxide ions contained in the supply water are calculated based on the detection value of the supply channel pH meter 245 and the detection value of the supply channel flow meter 246, and the discharge channel pH meter 251 Based on the detected value and the detected value of the discharge flow meter 252, the amount of hydrogen ions and the amount of hydroxide ions contained in the passing water are calculated, and the hydrogen adsorbed on the ion exchange resin 211 by calculating the difference between them. The amount of ions and the amount of hydroxide ions are calculated.

  Next, after the regenerated ion exchange resin 211 is desorbed from the regenerator 21 and accommodated in any one of the ion exchangers 12a to 12c, here the ion exchanger 12a, the raw water is desalted. Start (ST3). Specifically, by opening the raw water supply valve 113a and the raw water discharge valve 114a, the raw water is introduced into the ion exchange resin 121a accommodated in the ion exchanger 12a via the condensers 80 to 11Ca. Among the ions contained in the raw water introduced into the ion exchange resin 121a, the cation is a hydrogen ion adsorbed on the cation exchange resin of the ion exchange resin 121a, and the anion is an anion exchange resin of the ion exchange resin 121a. Each is exchanged with the adsorbed hydroxide ion. The discharged raw water passes through the ion exchanger 12a and flows again to the boiler 90 in the raw water flow path 11Ca.

  Simultaneously with the start of the desalting treatment of the raw water, detection of the amount of ions contained in the raw water is started (ST4). Specifically, the raw water flow meter 111a measures the flow rate of the raw water flowing through the raw water flow channel 11Ca, and the ion concentration measuring device 112a measures the ion concentration contained in the raw water. And the calculation part 411 calculates the ion content contained in raw | natural water based on the detected value of the raw | natural water flowmeter 111a and the detected value of the ion concentration measuring device 112a.

Subsequently, the notification determination unit 421 determines whether or not the amount of cations contained in the raw water has reached a first predetermined ratio (for example, 80%) of the amount of hydrogen ions adsorbed on the ion exchange resin 211, and is contained in the raw water. It is determined whether the amount of anions to be reached has reached a first predetermined ratio (for example, 80%) of the amount of hydroxide ions adsorbed on the ion exchange resin 211 (ST5). If this determination is “NO”, the process returns to ST4 and continues to detect the amount of ions in the raw water.
On the other hand, when the determination in ST5 is “YES”, the notification determination unit 421 activates the monitor 31 and the speaker 32, and the monitor 31 and the speaker 32 notify the regeneration instruction of the ion exchange resin 121 (ST6). . Subsequently, the process proceeds to ST7.

  In ST7, the switching determination unit 422 determines whether or not the amount of cations contained in the raw water has reached a second predetermined ratio (for example, 85%) of the amount of hydrogen ions adsorbed on the ion exchange resin 211. It is determined whether or not the amount of anions to be reached has reached a second predetermined ratio (for example, 85%) of the amount of hydroxide ions adsorbed on the ion exchange resin 211. If this determination is “NO”, the process returns to ST1.

  On the other hand, when the determination in ST7 is “YES”, the switching determination unit 422 switches the ion exchanger through which the raw water passes (ST8), and then returns to ST1. Specifically, the switching determination unit 422 closes the raw water supply valve 113a and the raw water discharge valve 114a, and opens either the raw water supply valve 113b and the raw water discharge valve 114b, or the raw water supply valve 113c and the raw water discharge valve 114c. . Thereby, the flow path through which the raw water flows switches from the raw water flow path 11Ca to either the raw water flow path 11Cb or the raw water flow path 11Cc.

According to this embodiment, in addition to the operational effects of the third embodiment described above, the following operational effects are obtained.
(E) Since the raw water supply valves 113a to 113c and the raw water discharge valves 114a to 114c are provided in the water treatment apparatus 10C and the switching determination unit 422 is provided in the control unit 42C, for example, by the raw water flow meter 111a and the ion concentration measuring instrument 112a When the detected value has reached the second predetermined ratio of the detected values by the supply path pH meter 245, the supply path flow meter 246, the discharge path pH meter 251, and the discharge path flow meter 252, the switching determination unit 422 causes the raw water The supply valve 113a and the raw water discharge valve 114a are closed, and the raw water supply valve 113b or 113c and the raw water discharge valve 114b or 114c are opened. As a result, the ion exchanger through which water passes is switched, and water flows to the ion exchanger 12b or 12c in which sufficient ion exchange capacity remains, so that ion leakage can be more reliably suppressed.

  It should be noted that the present invention is not limited to the above-described embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.

It is a block diagram of the water treatment system concerning a 1st embodiment of the present invention. It is a block diagram of the water treatment system which concerns on 2nd Embodiment of this invention. It is a block diagram of the water treatment system concerning a 3rd embodiment of the present invention. It is a block diagram of the control means concerning the embodiment. It is a flowchart of the water treatment system which concerns on the said embodiment. It is a block diagram of the water treatment system which concerns on 4th Embodiment of this invention. It is a block diagram of the control means concerning the embodiment. It is a flowchart of the water treatment system which concerns on the said embodiment.

Explanation of symbols

1, 1A, 1B, 1C Water treatment system 10, 10B, 10C Water treatment device 11, 11B, 11C Raw water flow path (flow path)
12 Ion exchanger (ion exchange means)
20, 20A, 20B, 20C Reproduction device 21 Regenerator (resin housing means)
22 Acid feeder (reclaimed water supply means)
23 Alkaline feeder (reclaimed water supply means)
24, 24A, 24B, 24C Reclaimed water supply path 25 Reclaimed water discharge path 30 Notifying unit (notifying means)
42, 42C Control unit (control means)
111 Raw water flow meter (raw water detection means)
112 Ion concentration measuring instrument (raw water detection means)
113 Raw water supply valve (switching means)
114 Raw water discharge valve (switching means)
121 ion exchange resin 211 ion exchange resin 245 supply channel pH meter (regenerated water detection means, supply water detection means)
246 Supply channel flow meter (recycled water detection means, supply water detection means)
251 Discharge channel pH meter (reclaimed water detection means, passing water detection means)
252 Discharge channel flow meter (reclaimed water detection means, passing water detection means)
421 Notification determination unit (notification determination means)
422 switching determination unit (switching determination means)

Claims (6)

A resin containing means for containing the ion exchange resin, a reclaimed water supply means for supplying regenerated water containing acid or base to the resin containing means via the reclaimed water supply path, and the resin containing means via the reclaimed water discharge path A reclaimed water discharge means for discharging the reclaimed reclaimed water,
A regenerating apparatus further comprising regenerated water detecting means for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by passing the regenerated water through the resin containing means. The playback apparatus according to claim 1, wherein
The reclaimed water detection means comprises: feed water detection means for detecting the amount of hydrogen ions or hydroxide ions contained in the reclaimed water supplied to the ion exchange resin;
And a passing water detecting means for detecting the amount of hydrogen ions or hydroxide ions contained in the recycled water that has passed through the resin containing means. A water treatment apparatus comprising: a flow path through which water flows; and an ion exchange means provided in the middle of the flow path and containing an ion exchange resin;
A water treatment system comprising: the regenerator according to claim 1 or 2, wherein the ion exchange resin accommodated in the ion exchange means is regenerated. The water treatment system according to claim 3,
An informing means for informing instruction information for instructing conveyance of the ion exchange resin contained in the ion exchange means to the resin containing means;
Control means for controlling the water treatment system,
The water treatment device further includes raw water detection means for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by passing the water through the ion exchange means,
The control means includes notification determining means for activating the notification means when the detection value by the raw water detection means has reached a first predetermined ratio of the detection value by the reclaimed water detection means. Water treatment system. The water treatment system according to claim 4,
A plurality of the ion exchange means are provided in parallel in the middle of the flow path,
The raw water detection means detects the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin accommodated in each of the ion exchange means,
The water treatment apparatus further includes switching means for switching the ion exchange means through which the water passes,
The control means further includes a switching determination means for activating the switching means when the detection value by the raw water detection means has reached a second predetermined ratio of the detection value by the reclaimed water detection means. Water treatment system. A water treatment device having a flow path through which water flows and an ion exchange means provided in the middle of the flow path and containing an ion exchange resin, and regenerating the ion exchange resin contained in the ion exchange means. A method for controlling a water treatment system comprising: the regenerating apparatus according to 1 or 2;
Regenerated water detection procedure for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by passing the regenerated water through the ion exchange means;
Raw water detection procedure for detecting the amount of hydrogen ions or hydroxide ions adsorbed on the ion exchange resin by allowing the water to pass through the resin containing means;
If the detection value in the raw water detection procedure has reached the first predetermined ratio of the detection value in the reclaimed water detection procedure, an instruction is given to convey the ion exchange resin stored in the ion exchange means to the resin storage means. A water treatment system control method comprising: a notification procedure for reporting instruction information to be performed.

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