JPWO2012117712A1 - Water treatment apparatus and water treatment method - Google Patents

Abstract

A means for storing a plurality of chlorine concentration design values, a means for measuring time, and a chlorine concentration design value stored in the storage means when the time measured by the time measurement means enters a certain time zone. A means for setting one of them as a chlorine concentration target value, and a means for adjusting the chlorine concentration of the water so that the chlorine concentration target value set by the setting means is reached, supplying a chlorine component to the water Equipment for processing. Design a chlorine concentration target value for each time zone of the day, measure the time, and when the measured time enters a certain time zone, it becomes the chlorine concentration target value in the time zone designed above A method of treating water by supplying a chlorine component to water, including a process of adjusting the chlorine concentration of water.

Description

  The present invention relates to a water treatment apparatus and a water treatment method. More specifically, the present invention relates to a water treatment apparatus and a water treatment method capable of performing sterilization treatment of water such as pool circulating water and bathhouse circulating hot water at a low cost.

  Water such as pool circulating water and bathhouse circulating hot water is circulated and used after disinfection with various bacteria using a chlorinating agent such as calcium hypochlorite and trichloroisocyanuric acid. Various water treatment apparatuses or water treatment methods for performing this treatment have been proposed.

  For example, in Patent Document 1, the quality of bathing water is measured and stored in a chemical tank in order to inject an appropriate amount of sterilized sodium hypochlorite for the purpose of keeping the concentration of free residual chlorine in bathing water constant. An automatic residual chlorine concentration control device that controls the operation of the chemical pump that delivers sterilized sodium hypochlorite, and a sensor at the entrance of the bathroom or bath, and if there are bathers, it is filtered according to the number of bathers The target system of the filtration unit includes a control device that purifies by increasing the amount of rotation of the pump and speeds up the circulation rate of filtration, and reduces the amount of rotation of the filtration pump when the number of bathers decreases, thereby obtaining an energy saving effect. Proposed.

JP 2010-179294 A

  An object of the present invention is to provide a water treatment apparatus and a water treatment method capable of performing sterilization treatment of water such as pool circulating water and bathhouse circulating hot water at a low cost.

  As a result of intensive studies to achieve the above object, the present inventor has established a special means for adjusting the supply amount of chlorine components to water according to the use situation of facilities that use water, thereby providing a chlorine agent. Water treatment device and water treatment method that can reduce the consumption of electricity and save power required for the chlorine concentration control mechanism have been found. The present invention has been completed as a result of further studies based on this finding.

That is, the present invention includes the following aspects.
[1] Means for storing a plurality of chlorine concentration design values, means for measuring time, chlorine concentration stored in the storage means when the time measured by the time measurement means enters a certain time zone Supplying a chlorine component to water, having means for setting one of the design values as a chlorine concentration target value, and means for adjusting the chlorine concentration of the water so as to be the chlorine concentration target value set by the setting means And equipment for treating water.
[2] Means for adjusting the chlorine concentration of water are means for measuring the chlorine concentration of water, and means for comparing the measured chlorine concentration value obtained by the measuring means with the target chlorine concentration value set by the setting means The water treatment apparatus according to [1], further comprising means for adjusting a supply amount of chlorine component to water based on a comparison result by the comparison means.
[3] The water treatment apparatus according to [2], wherein the means for measuring the chlorine concentration of the water has a constant flow valve in a portion that takes in water to be measured.

[4] Means for storing a plurality of chlorine component supply amount design values, means for measuring time, and stored in the storage means when the time measured by the time measuring means enters a certain time zone Means for setting one of the chlorine component supply amount design values as a chlorine component supply amount target value, and adjusting the chlorine component supply amount to water so that the chlorine component supply amount target value set by the setting means is obtained. An apparatus for treating water by supplying a chlorine component to water.
[5] The water treatment apparatus according to [2] or [4], wherein the means for adjusting a supply amount of chlorine component to water is a valve capable of changing an opening / closing time.
[6] The water treatment apparatus according to [5], wherein the valve whose opening / closing time can be changed is an electromagnetic valve.

[7] Chlorine concentration target value for each time zone of the day is designed, the time is measured, and when the measured time enters a certain time zone, the chlorine concentration target in the time zone designed above is measured A method of treating the water by supplying chlorine components to the water, including the process of adjusting the chlorine concentration of the water to a value.
[8] In the process of adjusting the chlorine concentration of the water, the chlorine concentration of the water is measured, and the obtained chlorine concentration measurement value is compared with the set chlorine concentration target value. The water treatment method according to [7], which includes a process of adjusting the chlorine component supply amount.
[9] The water treatment method according to [7] or [8], which is performed using a program relay and a digital indicating controller.

[10] Chlorine component supply target value for each time zone of the day is designed, the time is measured, and when the measured time enters one time zone, the chlorine in the time zone designed as described above A method of treating water by supplying a chlorine component to water, including a process of adjusting a chlorine component supply amount to water so as to become a component supply amount target value.
[11] The water treatment method according to [10], wherein the chlorine component supply amount is adjusted by a valve opening / closing time.
[12] The water treatment method according to [10] or [11], which is performed using a program relay.

  The water treatment apparatus and water treatment method of the present invention perform low-cost sterilization of water such as pool circulating water and bathhouse circulating hot water by reducing consumption of chlorine chemicals and saving power required for the chlorine concentration control mechanism. be able to.

The figure which shows the example of installation of a water treatment apparatus. The figure which shows an example of a time table. The figure which shows an example of a density table. The figure which shows an example of a supply amount table.

  Hereinafter, the present invention will be described with reference to the drawings. However, the present invention is not limited to what is shown in the drawings, and includes those in which the shape and the like are changed within the spirit and scope of the present invention.

(Embodiment 1)
Embodiment 1 of the water treatment apparatus according to the present invention includes a means for storing a plurality of chlorine concentration design values, a means for measuring time, and when the time measured by the time measuring means enters a certain time zone. The means for setting one of the chlorine concentration design values stored in the storage means as a chlorine concentration target value, and adjusting the chlorine concentration of the water so as to become the chlorine concentration target value set by the setting means Have means.

  FIG. 1 is a diagram illustrating an installation example of a water treatment apparatus. As shown in FIG. 1, water is extracted from a pool, a bathtub, or the like, and water is allowed to flow into a water treatment device through a pipe 3. Water that has flowed out of the water treatment device is returned to the pool, bathtub, or the like through the pipe 5. Moreover, as shown in FIG. 1, the filtration device F and the water treatment device can be attached in parallel between the pipe upstream portion 15 and the pipe downstream portion 16.

  First, a person using the water treatment apparatus according to the present invention designs a chlorine concentration target value for each time zone of the day in advance. In designing the chlorine concentration target value for each time zone of the day, for example, the number of pool users by time zone is grasped. When the number of users is large, the dirt of water becomes high, so it is necessary to increase the chlorine concentration of water. Therefore, a time table for weekdays (Monday to Friday) or holidays (Saturday to Sunday) as shown in FIG. 2 is created. In the term table shown in FIG. 2, the schedule pattern is changed between weekdays and holidays. On weekdays, it is divided into a time zone from 8:00 to 13:00, a time zone from 13:00 to 19:00, a time zone from 19:00 to 22:00, and a time zone from 22:00 to 8:00 the next morning. doing. On holidays, it is divided into a time zone from 8 to 10 o'clock, a time zone from 10 o'clock to 18 o'clock, a time zone from 18 o'clock to 21 o'clock, and a time zone from 21 o'clock to 8 o'clock the next morning doing. This division method is arbitrary, and is not particularly limited.

  The chlorine concentration target value of water in each time zone can be designed with a concentration table as shown in FIG. 3, for example. Moreover, the chlorine concentration target value in the time zone from 0:00 to 8:00 is 0.3 to 0.5 ppm, the chlorine concentration target value in the time zone from 8:00 to 13:00 is 0.6 to 0.8 ppm, Chlorine concentration target value in the time zone from 13:00 to 19:00 is 0.8 to 1.0 ppm, chlorine concentration target value in the time zone from 19:00 to 22:00 is 0.9 to 1.1 ppm, 22:00 The chlorine concentration target value in the time zone from 0 to 0 o'clock can be set to 0.3 to 0.5 ppm; the chlorine concentration target value for 1 hour before the start of use of the facility using water (at the start of business) is 0.8 -1.4ppm, chlorine concentration target value during facility use that uses water is 0.4-0.9ppm, and chlorine concentration target value after facility use (when business is closed) that uses water is 0.1 It can also be designed to ˜0.5 ppm.

  The water treatment apparatus of the present invention has storage means. The storage means stores a plurality of chlorine concentration design values determined by the above design. As the storage means, a memory function built in the digital controller, a memory in a microcomputer, or the like can be used.

  The time measuring means used in the water treatment apparatus according to the present invention is not particularly limited as long as it can measure the day of the week and / or time and can notify it by a signal. As the time measuring means, a timer, a time switch, a timer built in the program relay, a timer in a microcomputer, or the like can be used.

  When the time measured by the time measuring means enters a certain time zone, a signal is transmitted. The signal may be a signal only indicating the day of the week and / or time, or may be a signal indicating that a certain time zone has been entered. When a signal that only informs the day of the week and / or time is transmitted, the time zone on the time table can be identified from the signal and converted to a signal that informs the time zone.

  And the chlorine concentration target value in the time zone notified by the signal is selected and set from the concentration table. In the present invention, these series of processes can be performed automatically. Program relays and digital controllers are preferably used to perform these processes automatically.

  Adjust the chlorine concentration of the water so that the chlorine concentration target value set above is reached. The chlorine concentration in pool water or bathtub water can be measured by bringing a sensor (chlorine concentration measuring means) S into contact with water extracted from the pool or bathtub. Since the sensor may cause an error in the measured value due to fluctuations in water pressure, the chlorine concentration measuring means preferably has a constant flow valve CV in the portion that takes in water to be measured. The constant flow valve is a valve having a function of always maintaining a constant flow rate to the secondary side. Also called flow control valve or flow control valve. A feature is that a stable flow rate can be obtained even if there is a change in the flow rate or pressure on the primary side. There are a method of adjusting the flow area by a combination of rubber and orifice, a method using a spring and a needle, a method using a diaphragm, and the like.

  Next, the chlorine concentration measurement value obtained by the sensor S is compared with the set chlorine concentration target value. Specifically, the difference (ΔC) between the chlorine concentration measurement value and the chlorine concentration target value is obtained. Next, based on the value of ΔC, or if necessary, the increase / decrease adjustment range of the chlorine component supply amount is determined based on the value of ΔC and the integrated value of ΔC and / or the differential value of ΔC. A control signal for the width is transmitted. Note that the integrated value of ΔC may be the sum of the past ΔC value and the ΔC value of the current period. The differential value of ΔC may be the difference between the value of ΔC one cycle before and the value of ΔC of the current cycle. In the present invention, a digital indicating controller is preferably used as a means for comparing the measured chlorine concentration value with the target chlorine concentration value and a means for transmitting a control signal based on the comparison result.

The supply amount of the chlorine component can be adjusted by controlling the means for supplying the chlorine component to water. The chlorine component supply means P is not particularly limited. For example, a medicine tank described in Japanese Patent Application Laid-Open No. 2003-285551, a pump press sterilizer described in Japanese Patent Application Laid-Open No. 8-99089, and a solid drug dissolving device described in Japanese Patent Application Laid-Open No. 59-142890. Can do. Examples of the chlorine component supply means include solid chlorinating agents such as inorganic chlorinating agents such as calcium hypochlorite, organic chlorinating agents such as trichloroisocyanuric acid, dichloroisocyanuric acid, sodium dichloroisocyanurate and potassium dichloroisocyanurate. It is installed as an ingredient. The infused water is brought into contact with the solid medicine, and the solid medicine is dissolved in water. Drain the water in which the solid drug is dissolved, and return the water to the pool, tub, etc. As a result, water is sterilized and disinfected.
The dissolution amount of the solid drug, that is, the chlorine component supply amount can be adjusted, for example, by adjusting the amount of water flowing into the chlorine component supply means. A valve V can be provided in the pipe 3 for adjusting the amount of water. The amount of water can be adjusted by the opening degree of a valve installed in the supply pipe of the water treatment apparatus, or by the length of the opening and closing time of the valve installed in the supply pipe of the water treatment apparatus. Among these, the method of adjusting the amount of water according to the length of time for opening and closing the valve is preferable because the equipment is inexpensive and the operation cost is low. As an apparatus used in the method of adjusting the amount of water according to the length of time for opening and closing the valve, an electromagnetic valve can be mentioned.

(Embodiment 2)
Embodiment 2 of the water treatment apparatus according to the present invention enters a time zone in which there is a means for storing a plurality of chlorine component supply amount design values, a means for measuring time, and a time measured by the time measuring means. In this case, one of the chlorine component supply amount design values stored in the storage means is set as a chlorine component supply amount target value, and the chlorine component supply amount target value set by the setting means is set. And means for adjusting the supply amount of chlorine component to water.
Is.

  The means for measuring time is the same as in the first embodiment. The water treatment apparatus of Embodiment 2 does not need to have means for measuring the chlorine concentration and means for comparing the measured chlorine concentration value with the chlorine concentration target value and transmitting a control signal. As a result, the equipment cost can be greatly reduced.

  The water treatment apparatus of Embodiment 2 can be suitably used when the relationship between the chlorine component supply amount and the chlorine concentration is known to some extent. The relationship between the chlorine component supply amount and the chlorine concentration can be roughly determined by measurement, and can also be generally determined by calculation. As a result, it is possible to know in advance how much chlorine component supply is necessary to achieve the target chlorine concentration.

  Next, a chlorine component supply amount target value for each time zone of the day is designed. In designing the chlorine component supply amount target value for each time zone of the day, for example, the number of pool users by time zone is grasped. When the number of users is large, water contamination becomes high, so it is necessary to increase the supply amount of chlorine components.

  For example, the time zone is divided by a time table as shown in FIG. And the length of the opening-and-closing time of the valve installed in the supply pipe | tube of a water treatment apparatus is designed with a supply amount table as shown in FIG. For example, the ratio of the opening time / closing time in the time zone from 0:00 to 8:00 is set to 1/4 to 3/3, and the ratio of the opening time / closing time in the time zone from 8:00 to 13:00 is set to 5/3. The ratio of the open time / close time in the time zone from 13:00 to 17:00 on ˜7 / 3, the ratio of the open time / close time in the time zone from 19:00 to 22:00 to 8/3 to 10/3 Can be designed to 11/3 to 13/3, and the ratio of the open time / close time in the time zone from 22:00 to 0:00 can be designed to be 1/4 to 3/3.

The water treatment apparatus of the present invention has storage means. The storage means stores a plurality of chlorine component supply amount design values determined by the above design.
The time zone of the time table in which the time signal from the time measuring means is stored in the storage means is designated. A chlorine component supply amount value (for example, a ratio of valve opening / closing time) in the time zone is selected from the supply amount table. The selected chlorine component supply amount value is set as the chlorine component supply amount target value at the time. A series of these processes can be automatically performed in the present invention. A program relay is preferably used to perform these processes automatically.
Then, the chlorine component supply amount is adjusted so that the set target value is obtained. The supply amount of the chlorine component can be adjusted by the same method as in the first embodiment. The supply amount table in FIG. 4 shows a case where the chlorine component supply amount is adjusted according to the length of the valve opening / closing time. The adjustment of the chlorine component supply amount is not limited to this method, and can be performed by, for example, the opening degree of the valve.

Example 1
In order to adjust the chlorine concentration in the pool water, a digital indicating controller (made by OMRON) and a chlorine concentration measuring device were prepared. A constant flow valve was installed at the water inlet to the chlorine concentration measuring machine. The chlorine concentration measuring device changes the output current according to the concentration. The level of the output current is observed with a digital indicating controller. In order to set the output current to a target current value, that is, a target chlorine concentration value, a signal for controlling the supply amount of the chlorine component was set by the digital indicating controller. A solenoid valve is used to adjust the supply amount of the chlorine component, and the ratio of the opening and closing time by the solenoid valve can be changed according to the control signal.

This digital indicating controller can store four target chlorine concentration values, that is, four target current values (SV0, SV1, SV2, and SV3). The digital indicating controller has event input terminals EV1 and EV2. When one of the event signals (00, 01, 10, and 11) is input to the event input terminals EV1 and EV2, among the four stored chlorine concentration values (SV0, SV1, SV2, and SV3) Is set to the target value.
The event signal was generated by a program relay (Omron). This program relay has a weekly timer function, and can output an event signal for each day of the week time zone shown in FIG. In Example 1, the chlorine concentration shown in FIG. 3 was designed corresponding to the event signal.

Example 2
In order to adjust the chlorine concentration in the pool water, a program relay (manufactured by OMRON) was prepared. This program relay has a weekly timer function and a twin timer function.
Four types of TM patterns (TM0, TM1, TM2, and TM3) shown in FIG. 4 were stored in the twin timer. When one of the TM patterns is selected, the solenoid valve is operated at the opening / closing time shown in FIG. The weekly timer function allows the TM pattern to be selected for each day of the week time zone as shown in FIG. In Example 2, the valve opening / closing time shown in FIG. 4 was designed corresponding to the TM pattern.

CV: Constant flow valve S: Chlorine concentration sensor V: Control valve F: Filtration device P: Chlorine component supply means

Claims (12)

  Means for storing a plurality of chlorine concentration design values, means for measuring time, and the chlorine concentration design value stored in the storage means when the time measured by the time measurement means enters a certain time zone. Means for setting one of them as a chlorine concentration target value, and means for adjusting the chlorine concentration of the water so that the chlorine concentration target value set by the setting means is obtained. Equipment for processing. The means to adjust the chlorine concentration of water
Means for measuring the chlorine concentration of water, means for comparing the measured chlorine concentration value obtained by the measuring means with the target chlorine concentration value set by the setting means, and water based on the comparison result by the comparing means The water treatment apparatus of Claim 1 which has a means to adjust the chlorine component supply amount of.   The water treatment apparatus according to claim 2, wherein the means for measuring the chlorine concentration of water has a constant flow valve at a portion that takes in water to be measured.   Means for storing a plurality of chlorine component supply design values, means for measuring time, supply of chlorine components stored in the storage means when the time measured by the time measurement means enters a certain time zone Means for setting one of the quantity design values as a chlorine component supply amount target value, and means for adjusting the chlorine component supply amount to water so as to become the chlorine component supply amount target value set by the setting means An apparatus for treating water by supplying a chlorine component to water.   The water treatment apparatus according to claim 2 or 4, wherein the means for adjusting a supply amount of chlorine component to water is a valve capable of changing an opening / closing time.   The water treatment apparatus according to claim 5, wherein the valve capable of changing the opening / closing time is a solenoid valve.   Design a chlorine concentration target value for each time zone of the day, measure the time, and when the measured time enters a certain time zone, it becomes the chlorine concentration target value in the time zone designed above A method for treating water by supplying a chlorine component to water, including the process of adjusting the chlorine concentration of water. The process of adjusting the chlorine concentration of the water is as follows:
The process comprising: measuring a chlorine concentration in water, comparing the obtained chlorine concentration measurement value with a set target chlorine concentration value, and adjusting a supply amount of chlorine component to water based on the comparison result. 8. The water treatment method according to 7.   The water treatment method of Claim 7 or 8 performed using a program relay and a digital indicating controller.   Chlorine component supply amount target value for each time zone of the day is designed, time is measured, and when the measured time enters one time zone, the chlorine component supply amount in the time zone designed above A method for treating water by supplying chlorine components to water, including a process of adjusting the supply amount of chlorine components to water so as to achieve a target value.   The water treatment method according to claim 10, wherein the chlorine component supply amount is adjusted by a valve opening / closing time.   The water treatment method of Claim 10 or 11 performed using a program relay.

Images