JP6971630B2 - Water treatment equipment and water treatment method - Google Patents

Description

The present invention relates to a water treatment apparatus and a water treatment method.

In a water treatment device for filtering raw water supplied from a water source such as a well, for example, a filtration device using an ion exchange resin is known. For example, the filtration device includes a filtration tank in which an ion exchange resin, which is a filter medium, is housed. When the raw water passes through the filter tank, the filtration device exchanges sodium and cations in the raw water to capture impurities in the raw water with a filter medium and soften the raw water. The cation is a cation such as iron, manganese, calcium, magnesium ion or the like.

In the water treatment device, when the cation concentration of the ion exchange resin becomes high during the filtration treatment, the regenerated liquid such as high-concentration saline solution is passed through the ion exchange resin, and the resin and the ions of the cation and sodium are ionized again. Performs the reproduction process to be exchanged. In the regeneration process, the regeneration liquid is replenished from the replenishment tank to the filtration tank at a predetermined timing.

Japanese Unexamined Patent Publication No. 2014-155882

In the ion exchange type water treatment device and water treatment method, if the operation is continued, the filling amount decreases due to the damage of the ion exchange resin itself, which is a filter material, and the iron oxide film is formed when the pump is stopped, for example. Ion exchange capacity is reduced. Furthermore, if the regeneration process is not sufficiently performed, the ion exchange capacity will continue to decline. Therefore, it is necessary to replace the filter medium on a regular basis. However, since the filter material is replaced by the user, it may not be replaced even after an appropriate replacement cycle, and if the operation is continued, filtration failure may occur.

Therefore, it is an object of the present invention to provide a water treatment apparatus and a water treatment method capable of preventing poor filtration.

The water treatment apparatus according to one aspect of the present invention is configured to accommodate a filter medium and allow water to pass through the filter tank of the raw water, and is connected to the filter tank for removing iron and manganese from the raw water and the filter tank. The amount of the reclaimed material used in the regenerating tank which is configured to be able to accommodate the regenerated material and water and generates the regenerated liquid, and the reclaimed material which is replenished with the regenerated liquid in the filter tank to regenerate the filter material. A control unit that stops the flow of the raw water to the filtration tank when the number of times of the regeneration process is equal to or more than the predetermined stop reference number in the state of lack of recycled material short of the predetermined reference value. To prepare for.

The water treatment method according to another aspect of the present invention is configured to accommodate the filter material and allow the raw water to pass through the filter tank, and is connected to the filter tank for removing iron and manganese from the raw water, and is a recycled material. The number of times of the regeneration process of replenishing the filter tank with the regenerated liquid and regenerating the filter material from the regenerated tank configured to be able to accommodate water and generating the regenerated liquid is detected, and the regenerated liquid is used. When the number of times of the reclaiming treatment is equal to or more than the predetermined number of stopping reference times in the state of lack of the reclaimed material in which the amount of the reclaimed material used for the reclaiming material to be replenished in the filtration tank is less than a predetermined reference value. It comprises stopping the water flow.

According to the present invention, it is possible to provide a water treatment apparatus and a water treatment method capable of preventing poor filtration.

Explanatory drawing which shows the structure of the water treatment apparatus which concerns on one Embodiment of this invention. The front view which shows the structure of the filtration apparatus of the water treatment apparatus which concerns on the same embodiment. The side view which shows the structure of the filtration apparatus of the water treatment apparatus which concerns on the said embodiment. The plan view which shows the structure of the filtration apparatus of the water treatment apparatus which concerns on the said embodiment. The front view which shows the structure of the interface part of the water treatment apparatus which concerns on the said embodiment. Explanatory drawing which shows the filtration process of the water treatment apparatus. Explanatory drawing which shows the backwash treatment of the water treatment apparatus. Explanatory drawing which shows the regeneration process of the water treatment apparatus. Explanatory drawing which shows the cleaning process of the water treatment apparatus. Explanatory drawing which shows the water injection treatment of the water treatment apparatus. The flowchart which shows the water treatment method concerning the said embodiment.

Hereinafter, the water treatment apparatus 10 and the water treatment method according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11. FIG. 1 is an explanatory diagram showing a configuration of a water treatment device 10 according to the present embodiment. FIG. 2 is a side view of the filtration device 12 of the water treatment device 10, FIG. 3 is a front view of the filtration device 12, and FIG. 4 is a plan view of the filtration device 12. FIG. 5 is a front view of the interface unit 102c. 6 to 10 are explanatory views showing the operation of the water treatment device 10, and FIG. 11 is a flowchart of the water treatment method according to the present embodiment.

As shown in FIG. 1, the water treatment device 10 includes a raw water pump 11, a filtration device 12 arranged on the secondary side of the raw water pump 11, and a sterilizer 13 arranged on the secondary side of the filtration device 12. , A treatment water tank 14 arranged on the secondary side of the sterilizer 13, an automatic water supply pump 15 arranged on the secondary side of the treatment water tank 14, a water passage 16 forming a predetermined flow path, and a water passage 16. The flow path switch unit 17 for switching the connection state of the flow path of the above, and the control unit 100 having a plurality of control units 101a to 104a and storage units 101b to 104b are provided.

The raw water pump 11 includes a motor and a single-stage or multi-stage pump unit having an impeller connected to the motor. The raw water pump 11 boosts the pressure of raw water, for example, well water of a well 21 provided in the ground, and pumps it to the secondary side. The discharge port of the raw water pump 11 is connected to the filtration device 12 by a water passage 16.

As shown in FIGS. 2 to 10, the filtration device 12 includes a filtration tank 22 which is an ion exchange type iron removal / manganese removal tank and a regeneration tank 23 which is a regeneration tank. The filtration tank 22 is installed on a common base 24 together with the sterilizer 13 and the regeneration tank 23, and is housed in the storage cabin.

The filtration tank 22 is formed in a cylindrical shape having, for example, an upper wall, a lower wall, and a peripheral wall, and is configured to be capable of accommodating granular ion exchange resin and water and allowing water to pass through. The filtration tank 22 has a first port 31 and a second port 32 that communicate with the water passage 16. The first port 31 and the second port 32 are formed on, for example, an upper wall. The first port 31 and the second port 32 are configured to be connectable to a plurality of flow paths constituting the water passage 16, and the connection destination and the open / closed state thereof are switchable by the flow path switch unit 17.

A water collecting pipe 33 is provided inside the filtration tank 22. The water collecting pipe 33 includes a pipe portion 34 extending in the vertical direction, a filter cap 35 provided at the lower end of the pipe portion 34, and a plurality of branch pipes 36 and 37 branching at the upper end of the pipe portion 34. The lower end of the pipe portion 34 is arranged near the bottom surface of the filtration tank 22. The filter cap 35 covers the opening at the lower end of the tube portion 34. The filter cap 35 has a plurality of slits 35a. Each slit 35a has a width smaller than the particle size of the particles of the ion exchange resin, and is configured to allow water to pass through. The filter cap 35 allows water to pass through and prevents the ion exchange resin from passing through.

The two branch pipes 36 and 37 provided at the upper end of the pipe portion 34 are led out to the outside of the filtration tank 22. The openings at the ends of the pair of branch pipes 36 and 37 constitute the third port 38 and the fourth port 39, respectively. The third port 38 and the fourth port 39 are configured to be connectable to a plurality of flow paths constituting the water passage 16 via the flow path switch unit 17. The flow path switch unit 17 is configured to be able to switch the connection destination and open / closed state of the third port 38 and the fourth port 39.

The filtration device 12 exchanges sodium and cations in the raw water, that is, cations such as iron, manganese, calcium, and magnesium ions, that is, cations in the raw water, when the raw water sent by the raw water pump 11 passes through the filter material. The impurities in the filter material are trapped in the filter medium to soften the raw water. For example, in this embodiment, at least iron and manganese ions are exchanged. The filtration device 12 is connected to the regeneration tank 23 by the regeneration tube 41.

The regeneration tank 23 includes a case 23a having an upper opening and a cover 23b covering the upper opening of the case 23a.

The case 23a has a cylindrical shape and is configured to be able to accommodate water and recycled materials. A drain port 23c with an on-off valve is provided at a predetermined height of the peripheral wall of the case 23a, and the water in the regeneration tank 23 can be discharged from the drain port 23c. The case 23a is configured to accommodate a solid granular salt as a recycled material for several times, for example, 10 times. At a predetermined height in the case 23a, a filter F for vertically partitioning the space in the case 23a is provided. The filter F is made of, for example, a non-woven fabric and suppresses the passage of granular salts.

Inside the case 23a, an inner case 23d called a brine well having a diameter smaller than that of the case 23a is provided.

The inner case 23d is formed in a cylindrical shape with an opening at the top and extends along the vertical direction. The opening of the inner case 23d is closed by a cap. A plurality of slit holes 23e, which are slit-shaped through holes, are formed on the peripheral wall of the inner case 23d. The slit hole 23e is covered with a filter 23f made of, for example, a non-woven fabric. Through the slit holes 23e, fluid water and salt water can flow in the case 23a and the inner case 23d, while the passage of solid granular salt is suppressed by the filter 23f.

An index unit 25 as a remaining amount display unit indicating the remaining amount of the recycled material is provided on the outer surface of the inner case 23d. The index unit 25 has a scale line 25a as an index for each height dimension corresponding to the amount of salt consumed in one regeneration process, and a number 25b as an index indicating the number of times corresponding to the remaining amount. ing. The index unit 25 extends along the vertical direction. That is, in the index unit 25, the number on the surface of the granular salt as the recycled material deposited inside the case 32a and outside the inner case 23d corresponds to the number of regeneration treatments that can be processed by the remaining recycled material. It is configured as follows. Therefore, the user can easily grasp the number of processes corresponding to the remaining amount of the recycled material by visually observing the index unit 25.

The end of the regeneration tube 41 is arranged near the bottom of the inner case 23d. A resin check 41c for preventing air suction is provided at one end 41a of the regeneration tube 41 arranged in the regeneration tank 23. The inner case 23d is configured to be replenished with treated water through the regeneration tube 41.

The cover 23b has, for example, a circular shape and is provided in the upper opening of the case 23a.

A float switch 27 for detecting the position of the liquid level in the regeneration tank 23 is provided in the regeneration tank 23. The float switch 27 is supported in the inner case 23d of the regeneration tank 23 and floats on the liquid surface of the regeneration tank 23. The float switch 27 includes a float case constituting the outer shell and a switch unit housed in the float case. The electric wires that make up the cable are connected to the switch section inside the float case. The float switch 27 is connected to the control unit 102a via a cable. The float switch 27 detects the liquid level of the regenerated liquid and sends the detected signal to the control unit 102a.

In the reclaimed tank 23 configured as described above, the salt is dissolved in water by replenishing a predetermined amount of water in each reclaiming treatment in a state where, for example, granular salt is contained several times as a reclaimed material. It becomes a predetermined amount of salt water. That is, when a certain amount of water used in one regeneration process is injected into the inner case 23d of the regeneration tank 23, the injected constant amount of water Wa is introduced into the inner case 23d. When a part of the granular salt S1 is dissolved, the water Wa becomes the saturated salt water S2.

Therefore, in the regeneration tank 23, a certain amount of salt water S2 or water Wa and granular salt S1 remaining undissolved on the filter F are present. The salt water S2 in the regeneration tank 23 is sent to the filtration tank 22 through the regeneration tube 41 in a fixed amount by the operation of the ejector 42 in the regeneration process described later.

The sterilizer 13 includes a flow path portion 43, a chemical solution tank 44, a chemical solution pump 45 for sending the chemical solution to the flow path portion 43, and a flow rate sensor 46. The sterilizer 13 sterilizes the fluid flowing through the flow path portion 43 by injecting a predetermined amount of the chemical solution into the flow path portion 43.

The flow rate sensor 46 is, for example, a paddle type flow rate sensor, which comprises a paddle that can be rotated by a fluid flow, a support structure that rotatably supports the paddle, a magnet built in the paddle, and a magnetic sensor. I have. The magnetic sensor is connected to the control unit 102a via a signal line. The flow rate sensor 46 detects the flow of fluid passing through the sterilizer 13 and sends a signal to the control unit 102a.

The treated water tank 14 is a container configured to be able to store the treated water that has passed through the filter tank 22 and the sterilizer 13. The treated water tank 14 is provided with a liquid level sensor 47 that detects the liquid level position of the treated water. The liquid level sensor 47 is connected to the control unit 101a for the raw water pump 11 via a signal line. The liquid level sensor 47 detects the liquid level position of the treated water and sends the liquid level information as an electric signal to the control unit 101a.

The automatic water supply pump 15 includes a motor and a single-stage or multi-stage pump unit having an impeller connected to the motor. Two automatic water supply pumps 15 are provided on the ground, for example. The automatic water supply pump 15 increases the pressure of the water from the treated water tank 14 and pumps it to the secondary side under the control of the control unit 104a for pump control. The discharge port of the automatic water supply pump 15 is connected to the filtration tank 22 via the water passage 16 so as to communicate with each other. A pressure sensor 48 is provided in the flow path on the secondary side of the automatic water supply pump 15.

The pressure sensor 48 is, for example, a diaphragm type pressure sensor 48, and is connected to the control unit 104a via a signal line. The pressure sensor 48 detects the discharge pressure of the automatic water supply pump 15 and transmits the detected pressure signal to the control unit 104a.

The water passage 16 is a first flow path 51 composed of a pipeline from the discharge port of the raw water pump 11 to the filtration tank 22, and a second flow path composed of a pipeline from the filtration tank 22 to the sterilizer 13. 52, a third flow path 53 composed of a pipeline from the secondary side of the sterilizer 13 to the treatment water tank 14, and a third flow path from the treatment water tank 14 to the suction port of the automatic water supply pump 15. The fourth flow path 54, the fifth flow path 55 composed of the pipeline from the discharge port of the automatic water supply pump 15 to the first flow path 51, and the sixth flow path composed of the pipeline from the filtration tank 22 to the discharge portion. A second flow path 56 composed of a flow path 56, a seventh flow path 57 composed of a pipeline branching from the second flow path 52 to the discharge portion, and a regeneration tube 41 connected from the regeneration tank 23 to the filtration tank 22. It is provided with 8 flow paths 58.

One end 41a of the regeneration tube 41 is arranged in the regeneration tank 23, and the other end 41b is connected to an ejector 42 connected to the first port 31 of the filtration tank 22.

The flow path switch unit 17 includes a first three-way valve 61, a second three-way valve 62, a plurality of on-off valves 63a to 63c, and a control valve 64. The flow path switch unit 17 opens and closes the valves 61, 62, 63a to 63c and controls the control valves 64 to connect the eight flow paths 51 to 58 of the water passage 16 to the first port 31, the second port 32, and the third port. A plurality of processing modes are switched by connecting to or communicating with any of a total of four ports 38 and the fourth port 39, or by closing the flow path.

The first three-way valve 61 and the second three-way valve 62 are, for example, electromagnetic valves having three ports, and switch the connection state of a plurality of flow paths according to the control of the control unit 102a. The first three-way valve 61 has a port connected to the raw water pump 11 via the first flow path 51, a port connected to the discharge side of the automatic water supply pump 15 via the fifth flow path 55, and a control valve 64. It has a port that is selectively connected to a plurality of ports of the filtration tank 22 via the above.

The second three-way valve 62 has a port connected to the sterilizer 13 via the second flow path 52, a port connected to the discharge portion via the seventh flow path, and a filtration tank via the control valve 64. It comprises a port selectively connected to a plurality of 22 ports.

In the present embodiment, the first flow path 51 on the raw water side and the fifth flow path 55 from the automatic water supply pump 15 can be switched by opening and closing the first three-way valve 61 and switching the control valve 64, so that the port 31 can be switched. , 32, 38, 39. Further, by opening and closing the second three-way valve 62 and switching the control valve 64, the second flow path 52 on the treatment water tank side and the seventh flow path 57 on the discharge side can be switched to ports 31, 32, 38, 39. It is connected.

The plurality of on-off valves 63 are, for example, electromagnetic on-off valves 63, and the connection state of the plurality of flow paths is switched according to the control of 102a.

The control unit 100 includes a control panel 101 for the raw water pump 11, a control panel 102 for the water passage 16, a control panel 103 for the filtration device 12, and a control panel 104 for the automatic water supply pump 15.

The control panel 101 includes a control unit 101a that controls the operation of the raw water pump 11 based on a predetermined program, a storage unit 101b that stores various data, and an interface unit 101c.

The control panel 103 includes a control unit 103a that controls the operation of the filtration device 12 based on a predetermined program, a storage unit 103b that stores various data, and an interface unit 103c.

The control panel 102 includes a control unit 102a that controls the operation of each unit of the water passage 16 based on a predetermined program, a storage unit 102b that stores various data, and an interface unit 102c.

The control panel 104 includes a control unit 104a that controls the operation of the automatic water supply pump 15 based on a predetermined program, a storage unit 104b that stores various data, and an interface unit 104c.

The control units 101a, 102a, 103a, 104a perform various arithmetic processes based on input instructions to the interface units 101c to 104c and detection values detected by various sensors, and control the operation of the water treatment device 10.

For example, the control unit 101a performs various arithmetic processes based on the input instruction to the interface unit 101c and the detection values detected by various sensors, and controls the frequency of the inverter to shift operation or stop the motor of the raw water pump 11. .. Specifically, the control unit 101a controls the operation of the pump by transmitting a control signal to each inverter and controlling the inverter corresponding to the raw water pump 11 at a predetermined timing.

The control unit 103a performs various arithmetic processing based on the input instruction to the interface unit 103c and the detection value detected by various sensors, and opens and closes the valve of the control valve 64 to switch the connection state of the flow path. ..

The control unit 102a switches the connection state of the flow path by opening and closing the valves 63a to 63d of the water passage 16 based on the input instruction to the interface unit 102c and the detection values detected by various sensors.

The control unit 104a transmits a control signal to the inverter based on an input instruction to the interface unit 104c and a detection value detected by various sensors, and controls the inverter corresponding to the automatic water supply pump 15 at a predetermined timing. It controls the operation of the automatic water supply pump 15.

Further, the control unit 102a detects information such as the remaining value of the recycled material, the total number of times of regeneration, and the integrated energization time, and based on these detection results, performs pump operation control, flow path switching control, and notification processing. conduct. Further, the control unit 102a sets and updates various data in the storage unit based on the input instruction to the interface unit 102c and the detection values detected by the various sensors.

The water treatment device 10 performs a plurality of types of treatment by setting these flow paths and controlling the operations of the pumps 11 and 15. Specifically, the water treatment device 10 performs a filtration treatment, a backwash treatment, a regeneration treatment, a washing treatment, and a water injection treatment under the control of the control units 101a, 102a, 103a, 104a.

The storage units 101b, 102b, 103b, 104b store, for example, various programs, various reference values, and threshold values as information necessary for control. For example, the storage unit 102b stores the remaining amount data indicating the remaining amount value of the regenerated material, the integrated number of times data N1 of the regenerated material, the integrated energization time data T1, and the regenerated processing number data N2 in the regenerated material shortage state.

The integrated reproduction number data N1, which is the integrated number of reproduction processes, is, for example, the number of times of integration from the initial reproduction or the immediately preceding reset time, and is stored in the storage unit 102b. For example, each time the control unit 102a detects a reproduction signal, the integrated reproduction number data N1 is updated by adding one by one. Further, the integrated playback number data N1 is reset by a reset instruction. That is, for example, when the user operates the reset button when the ion exchange resin is replaced with a new resin, the control unit 102a detects this and resets the integrated reproduction count data N1 to 0.

The integrated energization time data T1 is a value obtained by integrating the energization time of the filtration device 12 from, for example, the initial energization start or the reset immediately before, and is stored in the storage unit 102b. The integrated energization time data T1 is reset by a reset instruction. That is, for example, when the user inputs the reset button when the ion exchange resin is replaced with a new resin, the control unit 102a detects this and resets the integrated energization time data T1 to 0.

The regeneration processing number data N2 in the recycled material shortage state is data calculated by the control unit based on, for example, the remaining amount data of the recycled material stored in the storage unit 102b and the regeneration processing signal. Here, the remaining amount data of the recycled material is a number set in proportion to the remaining amount of the recycled material, and is stored in the storage unit 102b as, for example, the number of recyclable times corresponding to the remaining amount of the recycled material. The remaining amount data of the recycled material is set, for example, when the recycled material is replenished, and is decremented by 1 for each recycling process to indicate the number of times corresponding to the remaining amount of the recycled material. For example, each time the control unit detects a reproduction signal, the remaining amount data is updated by decrementing by one. The remaining amount data is reset when the control unit detects a reset instruction by replenishing the recycled material. That is, for example, when a user inputs a reset instruction when the recycled material is replenished, the control unit 102a detects this and resets the remaining amount data to a value indicating the number of times corresponding to the remaining amount after replenishment.

For example, the control unit 102a detects the remaining amount shortage state of the recycled material based on the remaining amount data stored in the storage unit 102b. That is, the control unit 102a detects whether or not the remaining amount data is equal to or less than the preset remaining amount shortage reference value. Then, when the remaining amount data becomes equal to or less than the preset remaining amount shortage reference value, the number of subsequent regeneration processes is counted as the number of reproduction processes in the recycled material shortage state.

The remaining amount data and the reproduction number data N2 in the insufficient reproduction state can be obtained by inputting the remaining amount data by pressing the count increase button on the operation input unit 105 when the recycled material is replenished by receiving the notification process. It will be reset or updated.

The stop reference number N0 and the stop reference time T0, which are the stop reference values, are preset in the storage unit 102b, for example, based on the replacement cycle of the filter medium. These data are set, updated, and adjusted by the control of the control unit 102a. Further, various threshold values and setting values are configured so that the user can arbitrarily change the settings by inputting an operation to the interface unit 102c, for example.

The interface units 101c, 102c, 103c, and 104c include an operation input unit 105 and a display unit 106.

For example, the operation input unit 105 of the control panel 102 is various input buttons and switches such as a power switch, a remaining amount count button, and a remaining amount reset button for operating power ON / OFF, and various settings can be made by the user. It is configured to allow instruction input.

For example, the display unit 106 of the control panel 102 includes, for example, a PLC lamp 106a, a recycled material shortage lamp 106b, and a filter material replacement lamp 106c. The recycled material shortage lamp 106b is turned on under the control of the control unit 102a to perform notification processing for notifying the user of the insufficient remaining amount of the recycled material. The PLC lamp 106a is turned on under the control of the control unit 102a, and displays the number of remaining times of the recycled material.

Hereinafter, various operations performed by the control unit 100 of the water treatment device 10 according to the present embodiment will be described with reference to FIGS. 6 to 10. 6 shows a filtration treatment, FIG. 7 shows a backwash treatment, FIG. 8 shows a regeneration treatment, FIG. 9 shows a washing treatment, and FIG. 10 shows a water injection treatment.

FIG. 6 is an explanatory diagram showing a filtration process. The filtration treatment is a treatment in which raw water is pumped up and passed through a filtration tank 22 to capture cations such as iron and manganese by ion exchange and soften the raw water.

As shown in FIG. 6, as a filtration process, the control unit 103a controls the control valve 64, closes the first port 31, connects the second port 32 to the first flow path 51 on the raw water side, and connects the third port 38. Is connected to the third flow path on the treatment water tank 14 side, and the fourth port 39 is closed. Further, the control unit 103a stops the ejector 42 and closes the eighth flow path 58.

In this state, the control unit 101a drives the raw water pump 11 at a predetermined timing. The control unit 101a drives the raw water pump 11 when it detects that the liquid level of the treated water tank 14 has dropped to a predetermined pump start reference value based on, for example, the liquid level information detected by the liquid level sensor 47. By driving the raw water pump 11, the raw water is pumped and flows into the filtration tank 22 and the sterilizer 13. The raw water flows into the filtration tank 22 and is filtered to remove impurities such as sterilization, iron removal, manganese removal and solid matter, and becomes purified water L2 (treated water). Then, the treated water L2 enters the water collecting pipe 33 through the filter cap 35, and is sent to the treated water tank 14 from the third port 38 at the upper end of the water collecting pipe 33.

FIG. 7 is an explanatory diagram showing a backwash process. In the backwash treatment, water is flowed from the water collecting pipe 33, and the filter material is backwashed by passing water through the ion exchange resin of the filter tank 22 to flow from the bottom to the top and draining the filter material. It is a process to discharge iron oxide and fine particles (impurities) accumulated inside. Further, the filter material can be loosened by performing this backwashing treatment before the regeneration treatment.

As shown in FIG. 7, in the backwash process, the control unit 103a controls the control valve 64, closes the first port 31, connects the second port 32 to the sixth flow path 56 on the drain side, and makes a third. The port 38 is connected to the first flow path 51 on the raw water side, and the fourth port 39 is closed. In this state, when the control unit 101a drives the raw water pump 11 at a predetermined timing to send the raw water L1 to the secondary side, the raw water L1 flows downward from the third port 38 of the water collecting pipe 33 and passes through the filter cap 35. It flows out from the water collecting pipe 33, is sent from the bottom to the top of the filtration tank 22, and is drained from the second port 32. By this backwashing treatment, raw water is flowed from the bottom to the top of the filter tank 22 to wash the filter medium and discharge the oxides and fine particles accumulated in the filter tank 22.

For example, when the cation concentration becomes high during the filtration treatment, the control unit 103a performs a regeneration treatment in which a regenerating liquid such as a high-concentration saline solution is passed through and ion exchange between the resin and the cation and sodium is performed again. conduct. As a regeneration process, the control unit 102a replenishes the filtration tank 22 with high-concentration salt water S2 as a regeneration liquid at a predetermined timing from the regeneration tank 23. For example, the timing of the regeneration process is determined by the amount of water used and the cation concentration of the raw water, and is set on the control panel 103a of the control valve 64 by the number of days interval or the designation of the day of the week.

FIG. 8 is an explanatory diagram showing a reproduction process. The regeneration treatment is a treatment in which high-concentration salt water is passed through a filter material to separate iron and manganese that have been removed from the raw water and adhered to the filter material from the filter material and discharged.

Specifically, as shown in FIG. 8, as a regeneration process, the control unit 103a controls the control valve 64 at a predetermined timing set in advance, and connects the first port 31 to the regeneration tube 41 and the raw water pump 11. Communicate and close the second port 32. Further, the control unit 103a, which closes the third port 38 of the water collecting pipe 33 and connects the fourth port 39 to the sixth flow path 56 on the drain side, drives the ejector 42 in this state to drive the ejector 42 from the regeneration tank 23. High-concentration salt water and raw water from the raw water pump 11 are sent into the filtration tank 22. For example, raw water + high-concentration salt water ≈ 8% to 12%. The salt water and the raw water flow from the top to the bottom in the filtration tank 22, flow into the water collecting pipe 33 through the filter, and are discharged through the fourth port 39. Regenerated wastewater contains high-concentration salt water and cations such as iron and manganese. The regeneration process lowers the liquid level in the regeneration tank 23.

FIG. 9 is an explanatory diagram showing a cleaning process. The cleaning treatment is a treatment in which the residual salt remaining in the filtration tank 22 is discharged to the outside at a low speed and a new raw water L1 is injected, and is also called an extrusion treatment.

In the cleaning process, the control unit 103a controls the control valve 64, closes the first port 31, and communicates the second port 32 with the first flow path 51 on the raw water pump 11 side. Further, the control unit 102a closes the third port 38 and communicates the fourth port 39 with the sixth flow path 56 on the drainage side. In this state, by driving the raw water pump 11, the raw water L1 flows from the top to the bottom in the filtration tank 22, flows into the water collecting pipe 33 through the filter cap 35, and is discharged from the fourth port 39. By this cleaning treatment, the residual salt remaining in the filtration tank 22 is discharged to the outside.

FIG. 10 is an explanatory diagram showing a water injection treatment. The water injection treatment is a treatment in which the treated water L2 is put back into the reclaimed tank 23 and stored by causing the treated water L2 to flow back into the reclaimed tank 23.

In the water injection process, the control unit 103a controls the control valve 64, closes the first port 31, and communicates the second port 32 with the first flow path 51 on the raw water pump 11 side. Further, the control unit 102a connects the third port 38 to the treatment water tank 14, connects to the regeneration tube 41 via the ejector 42, and closes the fourth port 39. In this state, when the raw water pump 11 is driven by the control unit 101a and the ejector 42 is driven by the control unit 103a, the raw water L1 flows from the top to the bottom in the filtration tank 22 and flows into the water collecting pipe 33 through the filter cap 35. do. Then, a part of the treated water L2 after filtration is sent from the third port 38 to the treated water tank 14 through the second flow path 52 and the third flow path 53, and a part is passed from the ejector 42 through the regeneration tube 41. It is sent into the regeneration tank 23. The control unit 103a closes the flow path between the third port 38 and the regeneration tube 41 after a predetermined fixed time has elapsed, and stops water injection. By this water injection treatment, the treated water is replenished to the regeneration tank 23 with a certain amount of treated water.

The control unit 100 of the water treatment device 10 performs operation control such as operation control of the raw water pump 11, flow path switching of the water passage 16, and notification processing based on the total number of reproductions and the total energization time.

Specifically, as shown in the flowchart of FIG. 11, the control unit 102a detects the number of times of reproduction in the remaining amount shortage state at the timing when the reproduction signal from the control panel 103a is input, and the remaining amount shortage state. When the reproduction processing number data N2 in the above is equal to or more than a predetermined reference value (Yes in step ST1), the stop reference number N0 and the stop reference time T0, which are the stop reference values, are set, for example, the remaining amount of the recycled material is insufficient. Adjust to a lower value than when not (step ST2). For example, the number of times of reproduction in the remaining amount shortage state is counted by the control unit 102a based on the remaining amount data and the like, and is stored in the storage unit 102b. As the adjustment process of step ST2, the control unit 102a reduces, for example, to a normal stop reference value, that is, a value of about 80% to 90% of the stop reference value in a state where the recycled material is not insufficient.

Next, the control unit 102a detects the integrated reproduction number data N1 obtained by accumulating the number of times of the first reproduction process or the reproduction process from the time of the previous reset, and the integrated reproduction number data N1 is a predetermined stop reference number set in advance. It is determined whether or not it is N0 or more (step ST3). Then, when the integrated reproduction number data N1 is equal to or greater than the stop reference number N0, (Yes in step ST3) notification processing (step ST5) and stop processing (step ST6) are performed. If the integrated playback number data N1 is less than a predetermined stop reference number N0 set in advance (No in step ST3), the process proceeds to step ST4.

The stop reference values such as the stop reference number N0 and the stop reference time T0 are set values set in advance in the storage unit 102b based on the reproduction interval and the usage conditions in accordance with the replacement cycle of the filter material. The stop reference value is appropriately set or adjusted according to various conditions.

In step ST4, the control unit 102a detects the integrated energization time data T1, and when the integrated energization time data T1 is equal to or longer than a preset predetermined stop reference time T0 (Yes in step ST4), the notification process (Yes in step ST4). The stop process (step ST6) is performed together with step ST5). When the integrated reproduction number data N1 is less than the stop reference number N0 (No in step ST3) and the integrated energization time data T1 is less than the stop reference time T0 (No in step ST4), the control unit 102a operates. Continue and continue the filtration process by passing water.

As the notification process in step ST5, the control unit 102a turns on, for example, the filter material replacement lamp 106c, which is a notification lamp for notifying the insufficient remaining amount, and outputs an external signal.

As the stop process of step ST6, the control unit 103a outputs a reproduction signal, so that, for example, the control unit 102a controls any on-off valve in the flow path, for example, the second three-way valve 62 on the secondary side of the filtration device. , Close the waterway and stop the flow of water. Alternatively, as a stop process, the control unit 102a stops the raw water pump 11 and stops the flow of water by outputting a stop signal to the control unit 101a of the raw water pump 11.

After that, the control unit 102a detects the reset instruction (step ST7). For example, when the user receives the stop process, performs the ion exchange resin replacement work, and inputs the reset button in the operation input unit 105, the control unit 102a detects this. When the control unit 102a detects the reset instruction (Yes in step ST7), the notification process ends (step ST8), and the stop process ends (step ST9). For example, in the present embodiment, as an example, when the reset button is pressed, the external signal output is released and the driving of the raw water pump 11 is restarted.

Further, when the control unit 102a detects the reset instruction, the control unit 102a resets the data of the reproduction integration number and the operation integration number in the storage unit 102b (step ST10).

On the other hand, when the instruction input of the count increase button or the reset button is not detected (No in step ST7), the control unit 102a continues the notification processing in step ST5 and the stop processing in step ST6.

According to the water treatment apparatus 10 according to the present embodiment, it is possible to prevent operation due to poor filtration by stopping water flow when a predetermined stop reference value is satisfied. That is, in general, in the ion exchange type water treatment device and the water treatment method, when the operation is continued, the filling amount is reduced due to the breakage of the ion exchange resin itself which is the filter material, and the iron oxide is stored when the pump is stopped, for example. The ion exchange capacity is reduced due to the formation of a film or the like. Furthermore, if the regeneration process is not sufficiently performed, the ion exchange capacity will continue to decline. Therefore, it is necessary to replace the filter medium on a regular basis. However, since the replacement of the filter material is carried out by the user, filtration failure may occur if the operation is continued beyond an appropriate replacement cycle. Therefore, the water treatment device 10 and the water treatment method according to the above-described embodiment cut off the supply of treated water when the cumulative number of regenerations or the cumulative energization time exceeds a certain stop reference value, so that the water is poorly filtered. Can be prevented from flowing downstream. In addition, by forcibly stopping the flow of water and shutting off the supply of treated water, it is possible to encourage the user to replace the filter material and prevent poor filtration.

Further, in the above embodiment, by detecting the number of regeneration processes in a state where the recycled material is insufficient, a state of regeneration failure in which the deterioration of the ion exchange performance tends to progress is detected, and in this case, the stop reference value is reduced. I decided to adjust it. Therefore, the stop reference value can be set according to the progress of the deterioration of the ion exchange performance, and the filtration failure can be effectively prevented.

It should be noted that the present invention is not limited to each of the above embodiments as it is, and at the implementation stage, the components can be modified and embodied within a range that does not deviate from the gist thereof.

For example, in the above embodiment, an example is shown in which stop processing and notification processing are performed when either of them is equal to or higher than the stop reference value based on both the cumulative energization time and the cumulative number of reproductions, but the present invention is not limited to this. .. Further, as another embodiment, water flow stop control may be performed based on either the cumulative energization time or the cumulative number of reproductions. Further, instead of the cumulative energization time and the cumulative number of reproductions, the number of reproductions in the insufficient remaining amount state may be used as a reference. That is, when the number of reproductions in the remaining amount shortage state becomes equal to or more than a predetermined stop reference value, the stop process and the notification process may be performed.

Further, in the above embodiment, when the number of regeneration processes in the remaining amount shortage state is equal to or more than a certain value, an example of adjusting by reducing the cumulative energization time and the stop reference value of the cumulative number of reproductions is shown, but the present invention is limited to this. It is not something that can be done. For example, as another embodiment, the water flow stop process is performed by comparing the number of reproductions in the remaining amount shortage state with the stop reference value, and at least one or more of the integrated energization time or the integrated reproduction number is equal to or more than the predetermined adjustment reference value. If this is the case, adjustments may be made to reduce the stop reference value for stopping water flow.

For example, in the above embodiment, an example of lighting a lamp is shown as a notification process, but the present invention is not limited to this. For example, a display monitor may be provided and data or a message may be displayed under the control of the control unit 102a to perform notification processing, or a speaker may be provided to perform notification processing by voice.

Further, in the above embodiment, an example in which the notification process is performed together with the water flow stop process has been shown. It may be possible to perform a notification process for prompting. For example, by displaying that the filter medium needs to be replaced or turning on the lamp based on the cumulative regeneration processing number or cumulative energization time, which is smaller than the stop reference value for stopping water flow, or other reference values. , May be notified.

In the above embodiment, an example is shown in which a plurality of control units 101a to 104a and a plurality of storage units 101b to 104b are provided on different control panels 101 to 104, but the present invention is not limited thereto. For example, a part or all of the control units 101a to 104a are shared, a host control unit that controls a plurality of control units 101a to 104a is added, or a communication function between the plurality of control units 101a to 104a is performed by the device. The settings can be changed as appropriate.

Further, the present invention can be realized even if some of the constituent requirements of the above embodiment are omitted.

The present invention is not limited to the above embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, each embodiment may be carried out in combination as appropriate, in which case the combined effect can be obtained. Further, the above-described embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of disclosed constituent requirements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, if the problem can be solved and the effect is obtained, the configuration in which the constituent elements are deleted can be extracted as an invention.
The inventions described in the original claims of the present application are described below.
(1)
A filter tank that accommodates the filter media and allows water to pass through,
A regeneration tank connected to the filtration tank and configured to accommodate recycled materials and water,
A water treatment apparatus comprising a control unit for stopping water flow when the number of times of the regeneration process of replenishing the filter tank with the recycled material and cleaning the filtered material is equal to or more than a predetermined stop reference value.
(2)
A filter tank that accommodates the filter media and allows water to pass through,
A regeneration tank connected to the filtration tank and configured to accommodate recycled materials and water,
A water treatment device including a control unit that stops water flow when the energization time is equal to or longer than a predetermined stop reference value.
(3)
A filter tank that accommodates the filter media and allows water to pass through,
A regeneration tank connected to the filtration tank and configured to accommodate recycled materials and water,
The number of times of the reclaiming treatment is equal to or more than the predetermined stop reference value in the reclaimed material shortage state in which the amount of the reclaimed material used for the reclaiming treatment for replenishing the recycled material in the filtration tank is less than the predetermined reference value. A water treatment device, comprising a control unit, in case of stopping water flow.
(4)
The control unit stops the reclaimed material based on the number of times of the regenerated material in the regenerated material shortage state in which the amount of the regenerated material used for the regenerating process of replenishing the recycled material to the filtration tank is less than a predetermined reference value. The water treatment apparatus according to (1) or (2), which adjusts a reference value.
(5)
The water according to (3). Processing equipment.
(6)
The raw water pump connected to the filtration tank and
The water passage connected to the filtration tank and
Equipped with
The water treatment device according to any one of (1) to (5), wherein the control unit stops the water flow by closing the water passage or stopping the raw water pump.
(7)
The water treatment device according to any one of (1) to (6), wherein the control unit performs notification processing when the water flow is stopped.
(8)
From the recycled material and the recycled tank which is connected to the filter tank configured to allow water to pass while accommodating the filter material, the filtered material is replenished to the filter tank and the filtered material is washed. Detecting the number of playback processes and
A water treatment method comprising stopping water flow when the number of times of the regeneration treatment is equal to or more than a predetermined stop reference value.
(9)
From the recycled material and the recycled tank which is connected to the filter tank configured to allow water to pass while accommodating the filter material, the filtered material is replenished to the filter tank and the filtered material is washed. Detecting the number of playback processes and
When the energization time is longer than the specified stop standard value, stop the water flow and
Water treatment method.
(10)
The water treatment method according to (8) or (9), wherein the notification process is performed when the water flow is stopped.

10 ... water treatment device, 11 ... raw water pump, 12 ... filtration device, 13 ... sterilizer, 14 ... treatment water tank, 15 ... automatic water supply pump, 16 ... water passage, 17 ... flow path switch unit, 18 ... control panel, 21 ... well, 22 ... filter tank, 23 ... regeneration tank, 23a ... case, 23b ... cover, 23c ... drain port, 23d ... inner case, 23e ... slit hole, 23f ... filter, 24 ... base, 25 ... index section, 25a ... Scale line, 25b ... Number, 27 ... Float switch, 31 ... 1st port, 32 ... 2nd port, 33 ... Collection pipe, 34 ... Pipe, 35 ... Filter cap, 35a ... Slit, 36 ... Branch pipe, 37 ... branch pipe, 38 ... 3rd port, 39 ... 4th port, 41 ... regeneration tube, 41a ... one end, 41b ... other end, 41c ... check, 42 ... ejector, 43 ... flow path, 44 ... chemical tank, 45 ... Chemical pump, 46 ... Flow sensor, 47 ... Liquid level sensor, 48 ... Pressure sensor, 51 ... First flow path, 52 ... Second flow path, 53 ... Third flow path, 54 ... Fourth flow path, 55 ... 5th flow path, 56 ... 6th flow path, 57 ... 7th flow path, 58 ... 8th flow path, 61 ... 1st three-way valve, 62 ... 2nd three-way valve, 63 (63a-63c) ... on-off valve , 64 ... Control valve, 101, 102, 103, 104 ... Control panel, 101a, 102a, 103a, 104a ... Control unit, 101b, 102b, 103b, 104b ... Storage unit, 101c, 102c, 103c, 104c ... Interface unit, 105 ... Operation input unit, 106 ... Display unit, 106a ... PLC lamp, 106b ... Recycled material shortage lamp, 106c ... Filter material replacement lamp, L1 ... Raw water, L2 ... Treated water (purified water), S1 ... Salt (recycled material), S2 ... Salt water (regenerated liquid).

Claims (6)

A filter tank that accommodates the filter material and allows the raw water to pass through the filter tank to remove iron and manganese from the raw water .
A regeneration tank that is connected to the filtration tank and is configured to be able to accommodate the recycled material and water to generate a recycled liquid .
The number of times of the regenerating treatment in the regenerated material shortage state in which the amount of the regenerated material used for the regenerating treatment of replenishing the reclaimed liquid in the filter tank and regenerating the filter material is less than a predetermined reference value is predetermined. A water treatment device comprising a control unit for stopping the flow of the raw water to the filtration tank when the number of times of stopping is equal to or greater than the reference number of times of stopping. When the number of times of the reclaiming process in the reclaimed material shortage state is equal to or more than a predetermined number of times , the control unit sets the stop reference number to a value lower than that in the case where the remaining amount of the reclaimed material is not insufficient. The water treatment apparatus according to claim 1. The raw water pump connected to the filtration tank and
The water passage connected to the filtration tank and
Equipped with
The water treatment device according to claim 1 or 2, wherein the control unit stops the water flow by closing the water passage or stopping the raw water pump. The water treatment device according to any one of claims 1 to 3, wherein the control unit performs notification processing when the water flow is stopped. Is connected to the filtration tank is water passing can configured to raw water filtration vessel accommodates a filtering material performs iron removal dividing manganese of the raw water, regenerant is generated is configured to accommodate the recycled materials and water and that the regeneration tank, to detect the number of a reproduction process for reproducing the filtered material was supplemented with the regenerant in the filtration tank that,
When the number of times of the reclaiming treatment is equal to or more than the predetermined number of stopping reference times in the reclaimed material shortage state in which the amount of the reclaimed material used for the reclaiming treatment for replenishing the reclaimed liquid in the filtration tank is less than a predetermined reference value. A water treatment method comprising , in some cases, stopping the water flow. The water treatment method according to claim 5, wherein the notification process is performed when the water flow is stopped.

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