JP4121441B2 - Water treatment equipment - Google Patents

Description

  The present invention relates to a water treatment apparatus, and more particularly, to a water treatment apparatus that includes an electrolytic tank and performs electrolytic treatment on water to be treated introduced into the electrolytic tank.

  Conventionally, techniques for electrochemically treating water have been disclosed. For example, Patent Document 1 discloses a water treatment apparatus that generates nitrate by reducing nitrate ions and nitrite ions in water to be treated by an electrochemical reaction, and converts the ammonia into nitrogen gas to be removed from the water to be treated. Has been.

  In such a water treatment apparatus, due to electrolysis, a reduction reaction of nitrate ions represented by the following formula (1) occurs on the cathode side, and reactions represented by formulas (2) and (3) occur on the anode side.

NO ₃ ⁻ + 6H ₂ O + 8e ⁻ ＮＨ NH ₃ + 9OH ⁻ (1)
2Cl ⁻ ＣｌCl ₂ ↑ + 2e ⁻ (2)
Cl ₂ + H ₂ O⇔H ⁺ + Cl ⁻ + HClO (3)
Then, ammonia generated on the cathode side and hypochlorous acid generated on the anode side react as shown in the following formula (4) to become nitrogen gas, which is removed from the water to be treated.

2NH ₃ + 3HClO → N ₂ ↑ + 3HCl + 3H ₂ O (4)
In addition, although the chloride ion reacting according to the above-mentioned formula (2) is originally used in the water to be treated, the amount of hypochlorous acid generated from such chloride ion is expressed by formula (3). ) And formula (4), when there is not enough to react with the nitrogen compound, an agent for supplying chloride ions in the water to be treated, such as sodium chloride, has been introduced into the electrolytic cell.
JP 2003-225672 A

  However, in the conventional water treatment apparatus, deposits are accumulated in the electrolytic cell during the above-described electrolytic reaction, and the electrode surface is partially covered with the deposits, or the water to be treated is placed near the electrodes by the deposits. In some cases, the electrolytic treatment is not sufficiently performed on the water to be treated in the electrolytic cell due to obstruction of the passage.

  In addition, in the conventional water treatment apparatus, the electrolytic cell is provided with an overflow, and when water to be treated is excessively introduced into the electrolytic cell due to a failure of a valve or the like, the treated water is In this case, the sample was discharged outside the water treatment apparatus without being subjected to electrolytic treatment.

  That is, in the conventional water treatment apparatus, for various reasons, the water to be treated introduced into the electrolytic cell may be discharged from the electrolytic cell without being sufficiently subjected to electrolytic treatment.

  The present invention has been conceived in view of such circumstances, and its purpose is to perform electrolytic treatment to a higher degree on the water to be treated introduced into the electrolytic cell in the water treatment device, It is to discharge to the outside.

A water treatment device according to an aspect of the present invention includes a plate-like electrode,
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is on one side of the first direction parallel to the main surface of the electrode with respect to the electrode, and is parallel to the main surface of the electrode and intersects the first direction. Formed on one side of the direction,
The drain port is formed on the other side in the second direction and the other side in the second direction with respect to the electrode,
The electrode is installed such that the main surface is along a predetermined direction,
The electrolytic cell has a first opening formed on one side in the predetermined direction with respect to the main surface of the electrode, and a first opening formed on the other side in the predetermined direction with respect to the main surface of the electrode. 2 openings are formed,
A circulation pipe for directly connecting the first opening and the second opening outside the electrolytic cell is included .

  According to an aspect of the present invention, when the water to be treated is introduced into the electrolytic cell from the water supply port, the deposit under the electrode is caused to flow on the one side in the first direction of the electrode by the water to be treated. Thus, the electric current is flowed from one side in the second direction to the other side in the first direction of the electrode and the other side in the second direction.

Furthermore , while the electrolytic treatment is being performed on the water to be treated in the electrolytic bath, the water to be treated in the electrolytic bath is circulated so as to be once discharged out of the electrolytic bath. That is, all water to be treated in the electrolytic cell is reliably circulated and subjected to electrolytic treatment in the vicinity of the electrodes. In the water treatment device, the water to be treated in the electrolytic cell is circulated from the first opening toward the second opening, that is, along a predetermined direction. In addition, since the circulation pipe directly connects the first opening and the second opening, the water to be treated in the electrolytic tank is not mixed with the solution stored in another apparatus, and therefore, The water to be treated in the tank is not circulated to reduce the effect of the electrolytic treatment.
A water treatment device according to an aspect of the present invention includes a plate-like electrode,
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is formed on one side of the second direction that is parallel to the main surface of the electrode and intersects the first direction parallel to the main surface of the electrode with respect to the electrode,
The drain port is formed on the other side of the second direction with respect to the electrode, and
The electrode is installed such that the main surface is along a predetermined direction,
The electrolytic cell has a first opening formed on one side in the predetermined direction with respect to the main surface of the electrode, and a first opening formed on the other side in the predetermined direction with respect to the main surface of the electrode. 2 openings are formed,
A circulation pipe for directly connecting the first opening and the second opening outside the electrolytic cell is included.

  Further, in the water treatment apparatus according to the present invention, the electrolytic cell is supplied with water to be treated from a predetermined water storage tank, and connects the water supply port and the predetermined water storage tank. A water supply pump for sending the water to be treated to the electrolyzer through the pipe, a water supply valve for opening and closing the water supply pipe, and the water to be treated in the electrolyzer between the circulation pipe Circulation pump for circulation, drainage pipe connected to the drainage port, drainage valve for opening and closing the drainage pipe, the water supply pump, the water supply valve, the circulation pump, and the drainage It is preferable to further include control means for controlling the operation of the valve and the power supply mode to the electrode.

  Thereby, the water treatment apparatus can perform a comprehensive treatment on the electrolytic treatment of the water to be treated stored in the water storage tank.

  Moreover, in the water treatment apparatus according to the present invention, the electrode is composed of a plurality of plates, and the plurality of plates are from one side in a specific direction intersecting the predetermined direction in the electrolytic cell. It is preferable that they are installed so as to be arranged over the other side.

  Thereby, in the electrolytic cell, since the electrode is installed from one side to the other side in the direction intersecting with the direction in which the water to be treated is circulated, the water to be circulated is a plurality of plate bodies. It flows in the vicinity of any plate of the electrode composed of That is, the probability that the water to be treated is subjected to electrolytic treatment in the vicinity of the electrode can be increased.

  Moreover, in the water treatment apparatus according to the present invention, it is preferable that a plurality of the electrodes are provided side by side in the predetermined direction.

  Thereby, in the electrolytic cell, a plurality of electrodes are arranged in the direction in which the water to be treated is circulated. Therefore, since the water to be treated circulated in the electrolytic cell passes through the vicinity of more electrodes, the probability that the water to be treated is subjected to the electrolytic treatment in the vicinity of the electrodes can be increased.

  Moreover, in the water treatment apparatus according to the present invention, when the water to be treated is circulated in the electrolytic cell, the electrolytic cell has a hopper shape on the bottom surface on the downstream side of the electrolytic cell, and the drain port Is preferably a hopper-shaped opening at the bottom.

  Thereby, the deposit generated during the electrolytic treatment in the electrolytic bath can be accumulated in the hopper-shaped portion formed on the downstream side of the circulation of the water to be treated so as not to inhibit the electrolytic reaction.

A water treatment device according to an aspect of the present invention includes a plate-like electrode,
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is on one side of the first direction parallel to the main surface of the electrode with respect to the electrode, and is parallel to the main surface of the electrode and intersects the first direction. Formed on one side of the direction,
The drain port is formed on the other side in the second direction and the other side in the second direction with respect to the electrode,
The electrode includes a first electrode and a second electrode arranged in the first direction with respect to the first electrode,
The water supply port is formed between the first electrode and the second electrode in the first direction.

  Thereby, to-be-processed water can be poured on the same conditions at the time of water supply with respect to the electrode arranged in the 1st direction. Moreover, even if a scale or the like is attached to the electrode surface during drainage, the scale can be washed away from the electrode surface by water supply from a water supply port.

A water treatment device according to an aspect of the present invention includes a plate-like electrode,
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is formed on one side of the second direction that is parallel to the main surface of the electrode and intersects the first direction parallel to the main surface of the electrode with respect to the electrode,
The drain port is formed on the other side of the second direction with respect to the electrode, and
The electrode includes a first electrode and a second electrode arranged in the first direction with respect to the first electrode,
The water supply port is formed between the first electrode and the second electrode in the first direction.

  According to the present invention, deposits under the electrode can be removed from the vicinity of the electrode by supplying water to be treated from the water supply port. Thereby, since it can avoid that the said deposit inhibits the electrolysis in an electrode, the improvement of the electrolysis efficiency with respect to the to-be-processed water in an electrolytic vessel can be aimed at. Therefore, in the water treatment apparatus, the water to be treated introduced into the electrolytic cell can be discharged to the outside after being subjected to electrolytic treatment to a higher degree.

  In addition, according to the present invention, since a structure for removing deposits under the electrode by the flow of water to be treated is provided, a certain amount of members can be disposed between the electrode bottom and the bottom of the electrolytic cell. It becomes possible. As a result, a member for supporting the electrode from below can be disposed on the bottom surface of the electrolytic cell, and the electrode need not be supported only by the lid of the electrolytic cell. Therefore, the structure of the electrolytic cell lid can be facilitated.

  Furthermore, according to the present invention, since the water to be treated in the electrolytic cell reaches the vicinity of the electrode as a whole and can be subjected to electrolytic treatment, in the water treatment apparatus, the water to be treated introduced into the electrolytic cell. After water is subjected to electrolytic treatment at a higher degree, it can be discharged to the outside.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[First Embodiment]
FIG. 1 is a diagram schematically showing a longitudinal section of an electrolytic cell included in a water treatment apparatus according to a first embodiment of the present invention. 2 is a cross-sectional view taken along the line II-II of the electrolytic cell in FIG. 1, and FIG. 3 is a plan view of the electrolytic cell in FIG. Hereinafter, the configuration of the electrolytic cell will be described with reference to FIGS. In the water treatment apparatus of the present embodiment, water to be treated is introduced from the outside of the water treatment apparatus such as water to be treated stored in a storage tank provided outside the water treatment apparatus. In contrast, electrolytic treatment is performed.

  The electrolytic bath 10 contains water to be treated and performs electrolytic treatment on the water to be treated, and the upper portion is covered with a lid 11. In FIG. 3, the lid 11 is partially broken.

  Water to be treated is introduced into the electrolytic cell 10 from the storage tank described above via the water supply pipe 12. The electrolytic cell 10 is provided with three water supply ports 12 </ b> A to 12 </ b> C connected to the tip of the water supply pipe 12 and arranged in the front-rear direction.

  Twelve supports 251 to 262 are attached to the lid 11. A plurality of electrodes are accommodated in the electrolytic cell 10, and the support tools 251 to 262 respectively support the upper ends of ten plate-like electrodes. In particular, as shown in FIG. 2, two electrode groups 201 and 202 are supported by the support 251. The electrode group 201 includes five electrodes, plate-shaped electrodes 101 to 105, and the electrode group 202 includes five electrodes, plate-shaped electrodes 106 to 110. Similarly, the electrode groups 203 to 212 include the five electrodes among the electrodes 111 to 160. The support 252 supports the electrode groups 203 and 204, the support 253 supports the electrode groups 205 and 206, the support 254 supports the electrode groups 207 and 208, and the support 255 The groups 209 and 210 are supported, and the support tool 256 supports the electrode groups 211 and 212. In the electrode groups 201 to 212, five electrodes are arranged in the order of a cathode electrode, an anode electrode, a cathode electrode, an anode electrode, and a cathode electrode. That is, for example, in the case of the electrode group 201, the electrodes 101, 103, and 105 are cathode electrodes, and the electrodes 102 and 104 are anode electrodes.

  The electrodes included in the electrode groups 201 to 212 are supported at their lower ends by support members 301 to 312 provided at the bottom of the electrolytic cell 10, respectively. Each of the support members 301 to 312 is made of, for example, resin, and is formed with cuts into which the five electrodes of the electrode groups 201 to 212 are inserted, respectively. The electrodes 101 to 160 are spaced apart from other adjacent electrodes from below by the support members 301 to 312 by inserting their lower ends into the cuts formed in the support members 301 to 312, respectively. To be supported.

  As described above, twelve support tools 251 to 263 are attached to the lid 11, and a total of 60 electrodes are attached to the support tools 251 to 256. Similarly to the support tools 251 to 256, the support tools 256, 257, 258, 259, 260, 261, and 262 have electrode groups 213 and 214, electrode groups 215 and 216, electrode groups 217 and 218, and electrode group 219, respectively. , 220, electrode groups 221, 222, and electrode groups 223, 224 are attached. That is, 120 electrodes are installed in the electrolytic cell 10. The electrode groups 213 to 224 are each composed of five electrodes, similarly to the electrode groups 201 to 212.

  In particular, referring to FIG. 1, electrodes 101, 102, 161, 162 are included in the 120 electrodes described above, respectively. The electrodes 101, 102, 161, 162 are connected to a predetermined power source via two terminals among the terminals 101A, 101B, 102A, 102B, 161A, 161B, 162A, 162B, respectively.

  Three water supply ports 13 </ b> A to 13 </ b> C arranged in the front-rear direction are provided on the right side wall of the electrolytic cell 10. The left side wall of the electrolytic cell 10 is provided with three drainage ports 15A to 15C arranged in the front-rear direction. Furthermore, a hopper shape is formed at the four corners of the bottom portion of the electrolytic cell 10 as hopper portions 10A to 10D, and drainage ports 14A to 14D are provided at the opening portion of the hopper shape bottom. Yes. The hopper shape means a shape in which the upper end and lower end of a conical surface extending upward are cut off in a horizontal plane, and the lower end (bottom) is an opening. That is, when the hopper shape is formed on the wall surface of the electrolytic cell 10, a part of the wall surface is recessed. Therefore, deposits such as scales generated in the electrolytic treatment in the electrolytic cell 10 can be accumulated in the portion where the hopper shape is formed without being diffused throughout the electrolytic cell 10. Moreover, in the electrolytic cell 10 of this Embodiment, since the opening is formed in the bottom of a hopper shape, when the said opening is made into an open state, the deposit accumulated in the said hopper shape will be promptly electrolyzed. 10 can be led out.

  The hopper portions 10A to 10D are arranged so as to avoid directly below each electrode in the electrolytic cell 10 including the electrodes 101 to 161, that is, so as not to overlap each electrode in the vertical direction. Thereby, in the electrolytic cell 10, the clearance gap between each electrode and the bottom face of the electrolytic cell 10 can be made smaller. Therefore, the water to be treated in the electrolytic cell 10 is more reliably located near the electrode, and the electrolytic treatment can be easily performed in the vicinity of the electrode, and the accumulation of impurities can be avoided below the electrode.

  In the electrolytic cell 10, the water supply ports 12 </ b> A to 12 </ b> C are provided above and inside the 120 electrodes, and each of the 120 electrodes is installed so that the vertical surface is the main surface. For this reason, when the water to be treated is supplied from the water supply ports 12A to 12C, the main surfaces of the 120 electrodes are washed away by the flow of the water to be treated and, in addition, are efficiently guided to the lower portions of the electrodes. The deposit accumulated below each electrode is carried to the hopper portions 10A to 10D by the flow of the water to be treated.

  In the electrolytic cell 10, 120 electrodes are arranged 60 by 60 in the depth direction shown in FIG. 1 (left and right in FIG. 2), and the water supply ports 12A to 12C are similarly arranged in the depth direction of FIG. Are lined up. Thereby, each electrode can be similarly influenced as much as possible about the flow of the to-be-processed water supplied via water supply port 12A-12C.

  Further, in the electrolytic cell 10, when electric power is supplied to 120 electrodes and electrolytic treatment is performed on the water to be treated, the supply of water to be treated from the water supply ports 12 </ b> A to 12 </ b> C is stopped, and drainage is performed. The water to be treated is discharged from the ports 15A to 15C to the outside of the electrolytic cell 10, and further, the water to be treated is returned to the electrolytic cell 10 through the water supply ports 13A to 13C. That is, during the electrolytic treatment, the water to be treated in the electrolytic cell 10 is circulated in the electrolytic cell 10 through the outside of the electrolytic cell 10 through the drain ports 15A to 15C and the water supply ports 13A to 13C. The The water supply ports 13A to 13C are provided on the right side wall of the electrolytic cell 10, and the drain ports 15A to 15C are provided on the left side wall of the electrolytic cell 10, so that the water to be treated is circulated in the electrolytic cell 10. The direction along the main surface of each of the 120 electrodes is the direction along which the electrodes are formed.

  Further, as understood from FIGS. 2 and 3 in particular, the 120 electrodes are formed from one side in the depth direction of the electrolytic cell 10, that is, in the direction intersecting with the traveling direction of the water to be treated when being circulated. The other side is arranged throughout. By arranging the electrodes in this way, the water to be treated introduced from the water supply ports 13A to 13C and discharged from the drain ports 15A to 15C can pass through the vicinity of any of the 120 electrodes.

  Moreover, in the electrolytic cell 10, the electrode is arranged in multiple numbers about the left-right direction, ie, the advancing direction of the to-be-processed water. Thus, the water to be treated in the electrolytic cell 10 passes through the vicinity of the electrode 161 after passing through the vicinity of the electrode 101 before being introduced from the water supply ports 13A to 13C and discharged from the drain ports 15A to 15C. In addition, it passes through the vicinity of a plurality of electrodes. Thereby, the electrolytic cell 10 has the structure which can perform an electrolysis process with respect to to-be-processed water more reliably.

  FIG. 4 is a diagram schematically illustrating a configuration of a water treatment apparatus including the electrolytic cell 10 illustrated in FIGS. 1 to 3. In addition, the arrow in FIG. 4 has shown the direction through which to-be-processed water or gas flows, and the piping through which to-be-processed water or gas flows.

  Referring to FIG. 4, to-be-treated water is sent from the predetermined water tank to the water supply ports 12 </ b> A to 12 </ b> C by the pump 31. Note that the opening and closing of the pipe through which the pump 31 feeds the water to be treated is controlled by the motor valve 30.

  As described above, 120 electrodes are accommodated in the electrolytic cell 10, and each electrode is connected to the power supply 41. And by supplying electric power to the electrode, the reactions as shown in the above formulas (1) to (4) occur in the electrolytic cell 10. In addition, in order to promote reaction shown by Formula (2) and (3), the compound which supplies a chloride ion in to-be-processed water may be suitably supplied in the electrolytic cell 10. FIG.

  The water supply ports 13 </ b> A to 13 </ b> C and the drain ports 15 </ b> A to 15 </ b> C are appropriately connected outside the electrolytic cell 10 by a pipe 33, and the water to be treated in the pipe 33 is driven by a pump 34. The pipe 33 can be opened and closed by valves 33A and 35, and the flow rate of water to be treated in the pipe 33 is detected by a flow meter 36. Moreover, the piping 33 is branched, and one side is connected to the water supply ports 13A to 13C as described above, and the other side is connected to the drainage ports 14A to 14C via the valve 37. The valve 37 is closed when the electrolytic treatment is being performed in the electrolytic cell 10. When the valve 37 is in the closed state, the piping 33 directly connects the drainage ports 14A to 14C and the water supply ports 13A to 13C.

  The electrolytic cell 10 is provided with an exhaust port 16, and the gas generated in the electrolytic cell 10 is discharged to the outside of the electrolytic cell 10 through the exhaust port 16. The discharge of the gas or the like is promoted by the blower motor 32.

  Further, the drain ports 14A to 14D are connected to the motor valve 39 via the valve 38, respectively. When the valve 38 and the motor valve 39 are opened, the water to be treated in the electrolytic cell 10 is discharged to the drain through the drain ports 14A to 14D.

  Although not shown in the figure, the water treatment apparatus shown in FIG. 4 includes a control circuit that controls the operation of the water treatment apparatus as a whole. FIG. 5 is a flowchart of the electrolytic process executed by the control circuit. The operation content of the water treatment device will be described below with reference to FIG.

  First, in S1, the water supply motor valve 30 is opened, and in S2, the water supply pump 31 is turned on. As a result, the water to be treated is introduced into the electrolytic cell 10 through the water supply pipe 12.

  Next, in S3, it is determined whether or not the water level in the electrolytic cell 10 has reached a predetermined specified water level. Such a process of S3 is provided with a water level sensor (not shown in FIGS. 1 to 4) for detecting the water level in the electrolytic cell 10 in the electrolytic cell 10, and based on the detection output of the water level sensor, This is done by the control circuit judging. Then, while it is determined that the prescribed water level has not yet been reached, the processes of S2 and S3 are repeated. If it is determined that the water level has been reached, the process proceeds to S4.

  In S4, the water supply motor valve 30 is closed.

  In S5, the water supply pump 31 is turned off.

  Next, in S6, the pump 34 for circulating the water to be treated in the electrolytic cell 10 is turned on. Thereby, the to-be-treated water introduced into the electrolytic cell 10 is discharged from the discharge ports 15A to 15C and then returned to the electrolytic cell 10 through the water supply ports 13A to 13C again. As a result, the water to be treated in the electrolytic cell 10 is circulated between the electrolytic cell 10 and the pipe 33 without being mixed with water other than the water to be treated in the electrolytic cell 10.

  Next, in S <b> 7, power supply to the 120 electrodes in the electrolytic cell 10 is started, whereby electrolysis in the electrolytic cell 10 is turned on.

  In S8, it is determined whether or not a predetermined electrolysis time (a time required for electrolysis) has elapsed since the electrolysis was turned on in S7. Such a determination is made, for example, when the control circuit described above turns on a predetermined timer when electrolysis is started in S7, and determines whether or not the time counted by the timer has reached a predetermined electrolysis time. By doing so. If it is determined that the electrolysis time has elapsed, the process proceeds to S9.

  In S9, the power supply to the electrode in the electrolytic cell 10 is stopped, so that the electrolysis in the electrolytic cell 10 is turned off.

  Then, after the circulation pump 34 is turned off in S10, the drainage motor valve 39 is opened in S11. When the motor valve 39 is opened, the water to be treated in the electrolytic cell 10 is sent to the drain via the motor valve 39.

  Then, in S12, it is determined whether or not the water level in the electrolytic cell 10 has reached a water level (drained water level) at which drainage is considered completed. The determination in S12 is made by the above-described control circuit determining based on the detection output of the water level sensor provided in the electrolytic cell 10. When it is determined that the water level in the electrolytic cell 10 has reached the drainage water level, the motor valve 39 is closed in S13, the process is returned to S1, and new water to be treated is again supplied to the electrolytic cell. 10 and electrolytic treatment is performed.

  As mentioned above, in this Embodiment demonstrated with reference to FIGS. 1-5, the left-right direction in the electrolytic cell 10 shown in FIG. 1 is mentioned as an example of the 1st direction in a claim, 2nd As an example of the direction, the vertical direction in the electrolytic cell 10 of FIG. 1 can be cited, and as the third direction, the depth direction of the electrolytic cell 10 of FIG. 1 can be cited. As an example of the predetermined direction, the electrolytic cell 10 of FIG. The depth direction in the electrolytic cell 10 of FIG. 1 is also given as an example of the specific direction, but this is an example, and may be changed as much as possible. .

  In addition, as shown in FIG. 4, the water treatment apparatus of the present embodiment has components such as pumps 31 and 34 and motor valves 30 and 39 set in the electrolytic cell 10 shown in FIG. 1 and the like. However, the water treatment apparatus may include only the electrolytic cell 10, and other components may be included in an external apparatus.

[Second Embodiment]
FIG. 6 is a diagram schematically showing a longitudinal section of an electrolytic cell included in the water treatment apparatus according to the second embodiment of the present invention. 7 is a cross-sectional view taken along the line VII-VII of the electrolytic cell in FIG. 6, and FIG. 8 is a plan view of the electrolytic cell in FIG.

  The electrolytic cell 20 of the present embodiment has some common configurations with the electrolytic cell 10 of the first embodiment described above.

  Similarly to the electrolytic cell 10, the electrolytic cell 20 is covered with the lid 11, and 120 electrodes supported by the support tools 251 to 263 and the support members 301 to 312 are similar to the arrangement in the electrolytic cell 10. Contained in an array. The 120 electrodes include electrodes 101 to 162. Each of the 120 electrodes has a predetermined power source (described later) through terminals including terminals 101A, 101B, 102A, 102B, 161A, 161B, 162A, and 162B, as in the first embodiment. Power supply 41) Further, the electrolytic cell 20 is provided with water supply ports 13A to 13C on the right side surface and drain ports 15A to 15C on the left side surface. Also in the electrolytic cell 20, similarly to the electrolytic cell 10, the stored water to be treated is discharged from the drainage ports 15 </ b> A to 15 </ b> C and introduced from the water supply ports 13 </ b> A to 13 </ b> C via the pipe 33. 20 and the pipe 33 are circulated.

  On the other hand, in the electrolytic cell 20, the electrolytic cell 10 was provided with the hopper portions 10A to 10D at the four corners of the bottom surface, whereas the downstream side of the water to be treated as described above (drains 15A to 15C). Hopper portions 10A and 10B are provided only at the two close corners. And discharge opening 14A, 14B is provided as an opening part of hopper part 10A, 10B.

  Further, the electrolytic tank 20 is not provided with the water supply ports 12 </ b> A to 12 </ b> C provided in the electrolytic tank 10. And the to-be-processed water is introduce | transduced into the electrolytic cell 20 through the water supply ports 13A-13C so that it may mention later. That is, in the electrolytic cell 20 of the present embodiment, the water supply ports 13A to 13C are used for supplying water to be treated from the outside and circulating the water to be treated in the electrolytic cell 20.

  Moreover, the electrolytic cell 20 is formed so that the bottom face becomes lower toward the downstream side in the direction in which the water to be treated is circulated, that is, toward the right side in FIG. In FIG. 6, a two-dot broken line R indicating a horizontal position is shown for reference. Thereby, when to-be-processed water is circulated between the electrolytic cell 20 and the piping 33, the suspended | floating matter etc. which exist in to-be-processed water enter the hopper parts 10A and 10B provided in the downstream in the case of circulation. Therefore, it is possible to prevent the suspended matter and the like from being collected efficiently and continuously floating in the electrolytic cell 20 to hinder the electrolytic reaction on the electrode surface.

  FIG. 9 is a diagram schematically showing the configuration of the water treatment apparatus of the present embodiment including the electrolytic cell 20 shown in FIGS. 6 to 8.

  Referring to FIG. 9, in the water treatment apparatus of the present embodiment, the pump 31 for supplying the water to be treated to the electrolytic cell 20 is the same as the pump 31 in the water treatment apparatus of the first embodiment shown in FIG. 4. While connected to the water supply ports 12A to 12C of the electrolytic cell 10, it is connected to the water supply ports 13A to 13C via the three-way valve 40. That is, in the water treatment apparatus of the present embodiment, the water to be treated is supplied from the external water storage tank to the electrolytic cell 20 through the motor valve 30, the pump 31, the three-way valve 40, and the water supply ports 13A to 13C. The

  Further, in the water treatment apparatus shown in FIG. 9, the water to be treated in the electrolytic cell 20 is discharged from the discharge ports 15 </ b> A to 15 </ b> A by the pump 34, similarly to the water treatment apparatus of the first embodiment shown in FIG. 4. After being discharged through 15C, the water is returned from the water supply ports 13A to 13C into the electrolytic cell 20 through the valve 35 and the flow meter 36. That is, the water to be treated in the electrolytic cell 20 is once circulated so as to pass through the outside of the electrolytic cell 20. In addition, the three-way valve 40 can take the state which sends the to-be-processed water sent from the pump 31 to the water supply ports 13A-13C, and the state which sends the to-be-processed water sent from the pump 34 to the water supply ports 13A-13C. And the three-way valve 40 takes the latter state when the water to be treated in the electrolytic bath 20 is circulated so that the former state is taken when the water to be treated is supplied into the electrolytic bath 20. Thus, the state is controlled by a control circuit (not shown).

  As described above, 120 electrodes are accommodated in the electrolytic cell 20, and each electrode is connected to the power source 41. And by supplying electric power to the electrode, the reactions as shown in the above formulas (1) to (4) occur in the electrolytic cell 20. In addition, in order to promote reaction shown by Formula (2) and (3), the compound which supplies a chloride ion in to-be-processed water may be suitably supplied in the electrolytic cell 20. FIG.

  In the water treatment apparatus shown in FIG. 9, the gas in the electrolytic cell 20 is discharged to the outside through the exhaust port 16. The gas discharge is promoted by the blower motor 32.

  In the water treatment apparatus shown in FIG. 9, when the electrolytic treatment is completed, the motor valve 39 is opened, so that the water to be treated in the electrolytic cell 20 is drained through the valve 38 to the drain. Discharged.

  The control circuit for controlling the state of the three-way valve 40 described above can also control the operation of other components of the water treatment apparatus shown in FIG. FIG. 10 is a flowchart of the electrolytic process executed by the control circuit. Below, the operation | movement content of a water treatment apparatus is demonstrated, referring FIG.

  First, in SA1, the three-way valve 40 is brought into a state in which water to be treated can be passed between the water supply pump 31 and the electrolytic cell 20. Then, at SA2, the water supply motor valve 30 is opened, and at SA3, the water supply pump 31 is turned on. Thereby, to-be-processed water is introduce | transduced into the electrolytic cell 20 through the water supply ports 13A-13C.

  Next, in SA4, it is determined whether or not the water level in the electrolytic cell 20 has reached a predetermined specified water level. Such a process of SA4 is provided with a water level sensor (not shown in FIGS. 6 to 9) for detecting the water level in the electrolytic cell 20 in the electrolytic cell 20, and based on the detection output of the water level sensor, This is done by the control circuit judging. Then, while it is determined that the prescribed water level has not yet been reached, the processes of SA3 and SA4 are repeated, and if it is determined that the water level has been reached, the process proceeds to SA5.

  In SA5, the water supply motor valve 30 is closed. At SA6, the water supply pump 31 is turned off.

  Next, in SA7, the three-way valve 40 is brought into a state that allows the water to be treated to pass between the circulation pump 34 and the electrolytic cell 20.

  Next, at SA8, the circulation pump 34 is turned on. Thereby, the to-be-treated water introduced into the electrolytic cell 20 is discharged from the discharge ports 15A to 15C and then returned to the electrolytic cell 20 through the water supply ports 13A to 13C again.

  Next, in SA9, power supply to the 120 electrodes in the electrolytic cell 20 is started, whereby electrolysis in the electrolytic cell 20 is turned on.

  Then, in SA10, it is determined whether or not a predetermined electrolysis time (time required for electrolysis) has elapsed since electrolysis was turned on in SA9. Such determination is made, for example, when the control circuit described above turns on a predetermined timer when electrolysis is started at SA9, and determines whether the time measured by the timer has reached a predetermined electrolysis time. By doing so. When it is determined that the electrolysis time has elapsed, the process proceeds to SA11.

  In SA11, the electrolysis in the electrolytic cell 20 is turned off by stopping the power supply to the electrode in the electrolytic cell 20.

  After the circulation pump 34 is turned off at SA12, the drainage motor valve 39 is opened at SA13. When the motor valve 39 is opened, the water to be treated in the electrolytic bath 20 is sent to the drain via the motor valve 39.

  Then, in SA14, it is determined whether or not the water level in the electrolytic cell 20 has reached a water level (drainage water level) at which drainage is considered completed. The determination in SA14 is made by the above-described control circuit determining based on the detection output of the water level sensor provided in the electrolytic cell 20. When it is determined that the water level in the electrolytic cell 20 has reached the drainage water level, the motor valve 39 is closed in SA15, the process is returned to SA1, and new water to be treated is again supplied to the electrolytic cell. 20 and electrolytic treatment is performed.

[Third Embodiment]
FIG. 11: is a figure which shows typically the structure of the apparatus which consumes the to-be-processed water electrolyzed in the water treatment apparatus of the 3rd Embodiment of this invention, and the said water treatment apparatus.

  With reference to FIG. 11, in this Embodiment, to-be-processed water is introduce | transduced into the water treatment apparatus 5 from a tap water or groundwater piping. In the water treatment apparatus 5, the introduced water to be treated is subjected to electrolytic treatment. Then, the water to be treated that has been subjected to the electrolytic treatment by the water treatment device 5 is introduced into the existing water utilization system 400. Although not shown, the water treatment device 5 recognizes the state and controls the operation of various members such as a pump, a valve, a motor valve, and a water level sensor included in the water treatment device 5. A control circuit is provided.

  In the water treatment device 5, a water tank 50 is provided. FIG. 12 is a diagram for explaining the configuration of the water tank 50 in detail.

  With further reference to FIG. 12, the water tank 50 includes water supply ports 501, 502, 508, 511, an exhaust port 504, an overflow drain port 506, and drain ports 507, 509, 512. The water tank 50 includes an overflow plate 51, and the interior of the water tank 50 is divided into an electrolytic tank 50 </ b> A and a storage tank 50 </ b> B. The gas in the water tank 50 is appropriately discharged to the outside by being promoted by the blower motor 73 via the exhaust port 504.

  The treated water sent from the tap water or the underground water pipe passes through the valve 61 and then branches to the motor valve 62, the motor valve 63, or the pipe provided with the valve 65.

  In the water tank 50, the water to be treated supplied from the outside through the motor valve 63 and the valve 65 is introduced into the electrolytic tank 50A through the water supply ports 502 and 501, respectively. In the electrolytic cell 50A, an electrode pair 550 is provided. When power is supplied from the power source 81 to the electrode pair 550, the above equation (1) to equation (4) are expressed in the electrolytic cell 50A. A corresponding electrolytic reaction occurs. As in this embodiment, in a water treatment apparatus that performs electrolytic treatment on tap water or water from groundwater piping as the water to be treated, the water to be treated by hypochlorous acid generated in the formula (3) in particular. Disinfection is the main content of the electrolytic treatment for the water to be treated. In this embodiment, in particular, in order to promote the reactions of the formulas (2) and (3), the pump 64 is appropriately driven so that the chemical supply tank 80 is connected to the electrolytic tank 50A via the water supply port 502. Thus, an agent for supplying chloride ions in an aqueous solution such as an aqueous sodium chloride solution is appropriately supplied.

  In order to make the concentration of the medicine in the medicine supply tank 80 constant, the electromagnetic valve 62 is appropriately opened, and the treated water sent from the tap water or the underground water pipe is introduced into the medicine supply tank 80 as appropriate. The

  When the level of the water to be treated in the electrolytic tank 50A exceeds the upper end of the overflow plate 51, the excess amount of water to be treated is introduced into the storage tank 50B beyond the overflow plate 11.

  When the motor valve 63 and the valve 65 are opened and a predetermined amount of water to be treated is introduced into the electrolytic bath 50A from the outside, the motor valve 63 and the valve 65 are closed and power is supplied to the electrode pair 550. Then, the electrolytic treatment is performed in the electrolytic cell 50A. During the electrolytic treatment, the pump 70 is driven, the motor valve 68 is opened, and the motor valve 69 is closed, so that the water to be treated in the electrolytic bath 50A is Once circulated outside the electrolytic cell 50A.

  When the electrolytic treatment is performed for a predetermined time (or until the concentration of the predetermined compound of the water to be treated in the electrolytic bath 50A reaches a predetermined concentration), the motor valve 68 and the valve 71 are closed, By opening the motor valve 69, the water to be treated in the electrolytic bath 50A is introduced into the storage bath 50B.

  The water to be treated introduced into the storage tank 50B after being subjected to the electrolytic treatment in the electrolytic tank 50A is sent to the water utilization system 400 by opening the valve 67 and driving the pump 66.

  In the water use system 400, a tank 401 constituted by a pool or a bathtub, a drain port 401A provided in the tank 401, a sand filter device 403 for filtering the water to be treated discharged from the drain port 401A, and a sand filter from the drain port 401A. Pump 402 for promoting the flow of water to be treated into apparatus 403, heat exchanger 404 provided between sand filtration device 403 and tank 401, water to be treated in tank 401, such as hypochlorous acid A medicine supply tank 405 for supplying medicine and a pump 406 for sending the medicine in the medicine supply tank 405 to the tank 401 are provided.

  The treated water sent from the water treatment device 5 is introduced into the tank 401. The water to be treated in the tank 401 is sent to the sand filtration device 403 by appropriately driving the pump 402, then the temperature is adjusted by the heat exchanger 404, and the chemical sent from the chemical supply tank 405 by the pump 406. And then returned to the tank 401.

  In the water treatment device 5, when the level of the water to be treated in the storage tank 50 </ b> B reaches the height position of the overflow discharge port 506, the water to be treated in the storage tank 50 </ b> B is drained through the overflow discharge port 506. And discharged.

  In the water treatment device 5, the electrolytic tank 50A and the water storage tank 50B are provided with water level sensors 503 and 505 for detecting the respective water levels. When the water level in the electrolytic tank 50A becomes higher than usual due to a malfunction of the valve 65 or the like, when the water level sensor 503 detects that fact, the water to be treated in the storage tank 50B is detected in this case. Is discharged into the drain with the valve 72 open. This is because the treated water in the storage tank 50B in such a case is treated water that has been sent from the electrolytic tank 50A to the storage tank 50B over the overflow plate 51 without being sufficiently subjected to electrolytic treatment. .

  In addition, in the water treatment device 5, the treated water after electrolytic treatment is transferred from the electrolytic tank 50A to the storage tank 50B, although the treated water in the storage tank 50B is not sent to the water utilization system 400. Similarly, when it is determined that the water level of the storage tank 50B has exceeded a predetermined value by being introduced, the valve 72 is opened and the water to be treated in the storage tank 50B is discharged to the drain. The

  Each embodiment disclosed this time must be considered as illustrative in all points and not restrictive. In addition, it is considered that each embodiment can be implemented independently or in combination as much as possible. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is a figure which shows typically the longitudinal cross-section of the electrolytic vessel contained in the water treatment apparatus which is the 1st Embodiment of this invention. It is arrow sectional drawing which follows the II-II line of the electrolytic cell of FIG. It is a top view of the electrolytic cell of FIG. It is a figure which shows typically the structure of the water treatment apparatus containing the electrolytic vessel of FIG. It is a flowchart of the electrolysis process which the control circuit contained in the water treatment apparatus of FIG. 4 performs. It is a figure which shows typically the longitudinal cross-section of the electrolytic vessel contained in the water treatment apparatus which is the 2nd Embodiment of this invention. It is arrow sectional drawing which follows the VII-VII line of the electrolytic cell of FIG. It is a top view of the electrolytic cell of FIG. It is a figure which shows typically the structure of the water treatment apparatus containing the electrolytic vessel of FIG. It is a flowchart of the electrolysis process which the control circuit contained in the water treatment apparatus of FIG. 9 performs. It is a figure which shows typically the structure of the apparatus which consumes the to-be-processed water electrolyzed in the water treatment apparatus of the 3rd Embodiment of this invention, and the said water treatment apparatus. It is a figure for demonstrating in detail the structure of the water tank of FIG.

Explanation of symbols

  10, 20, 50A Electrolyzer, 10A-10D Hopper part, 11 Lid, 12 Water supply pipe, 12A-12C, 13A-13C Water supply port, 14A-14D, 15A-15C Drain port, 16 Exhaust port, 30, 39, 62 , 63, 68, 69 Motor valve, 31, 34 Pump, 32 Blower motor, 33 Piping, 33A, 35, 37, 38, 61, 65, 67, 71, 72 Valve, 40 Three-way valve, 41, 81 Power supply, 50 Water tank , 50B storage tank, 51 overflow plate, 80 drug supply tank, 101-162 electrode, 101A, 101B, 102A, 102B, 161A, 161B, 162A, 162B terminal, 251-256 support, 301-112 support member, 400 water Application system, 550 electrode pair.

Claims (8)

A plate-shaped electrode;
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is on one side of the first direction parallel to the main surface of the electrode with respect to the electrode, and is parallel to the main surface of the electrode and intersects the first direction. Formed on one side of the direction,
The drain port is formed on the other side in the second direction and the other side in the second direction with respect to the electrode,
The electrode is installed such that the main surface is along a predetermined direction,
The electrolytic cell has a first opening formed on one side in the predetermined direction with respect to the main surface of the electrode, and a first opening formed on the other side in the predetermined direction with respect to the main surface of the electrode. 2 openings are formed,
Including the circulation pipe which is directly connected with said second opening and the first opening in the electrolytic cell outside the water treatment apparatus. A plate-shaped electrode;
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is formed on one side of the second direction that is parallel to the main surface of the electrode and intersects the first direction parallel to the main surface of the electrode with respect to the electrode,
The drain port is formed on the other side of the second direction with respect to the electrode, and
The electrode is installed such that the main surface is along a predetermined direction,
The electrolytic cell has a first opening formed on one side in the predetermined direction with respect to the main surface of the electrode, and a first opening formed on the other side in the predetermined direction with respect to the main surface of the electrode. 2 openings are formed,
A water treatment apparatus including a circulation pipe for directly connecting the first opening and the second opening outside the electrolytic cell . The electrolytic cell is supplied with water to be treated from a predetermined storage tank,
A water supply pipe connecting the water supply port and the predetermined water storage tank;
A water supply pump for sending treated water to the electrolytic cell via the water supply pipe;
A water supply valve for opening and closing the water supply pipe;
A circulating pump for circulating the water to be treated in the electrolytic cell with the circulation pipe;
A drainage pipe connected to the drainage port;
A drain valve for opening and closing the drain pipe;
The water treatment according to claim 1 , further comprising control means for controlling operation of the water supply pump, the water supply valve, the circulation pump, and the drainage valve, and a power supply mode to the electrode. apparatus. The electrode is composed of a plurality of plates that are installed in the electrolytic cell so that the main surface is along the predetermined direction,
The water treatment apparatus according to claim 1 , wherein the plurality of plate bodies are installed so as to be arranged from one side to the other side in a specific direction intersecting the predetermined direction in the electrolytic cell . The water treatment apparatus according to claim 1, wherein a plurality of the electrodes are provided side by side in the predetermined direction . When the water to be treated is circulated in the electrolytic cell, the electrolytic cell has a hopper shape on the bottom surface on the downstream side in the electrolytic cell,
The water treatment apparatus according to claim 1 , wherein the drain port is a hopper-shaped opening at the bottom . A plate-shaped electrode;
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is on one side of the first direction parallel to the main surface of the electrode with respect to the electrode, and is parallel to the main surface of the electrode and intersects the first direction. Formed on one side of the direction,
The drain port is formed on the other side in the second direction and the other side in the second direction with respect to the electrode,
The electrode includes a first electrode and a second electrode arranged in the first direction with respect to the first electrode,
The water supply device is a water treatment device formed between the first electrode and the second electrode in the first direction . A plate-shaped electrode;
Including water to be treated and an electrolytic cell containing the electrode,
The electrolytic cell is formed with a water supply port for introducing treated water sent from the outside into the electrolytic cell, and a drain port for discharging treated water from the electrolytic cell,
The water supply port is formed on one side of the second direction that is parallel to the main surface of the electrode and intersects the first direction parallel to the main surface of the electrode with respect to the electrode,
The drain port is formed on the other side of the second direction with respect to the electrode, and
The electrode includes a first electrode and a second electrode arranged in the first direction with respect to the first electrode,
The water supply port, for the first direction, is formed between the first electrode and the second electrode, the water treatment apparatus.

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