JP4571262B2 - Water storage equipment purification equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The invention, for example, relates to the purification equipment for water storage facilities of the pool or the like.
[0002]
[Prior art]
Pools and public baths, which are one form of water storage facilities, are a state where many facility users enter and enter hot water, so that water and hot water (hereinafter referred to as water storage) contain bacteria and secretory organic substances such as Escherichia coli. It is easy to become. Therefore, in order for the facility user to be able to use these facilities comfortably, it is necessary to periodically purify the stored water.
[0003]
It is common to use sodium hypochlorite for the purification treatment of the stored water. Sodium hypochlorite has both a bactericidal action and an oxidative action. This bactericidal action is used to sterilize miscellaneous bacteria in the stored water, and the oxidative action is used to agglomerate secretory organic substances in the stored water. This is because the transparency can be improved.
[0004]
Taking a pool as an example, observing the residual chlorine concentration in the stored water within the range of 0.4 to 1 ppm (specified amount) is obligatory as a condition of facility provision, but sterilization of the stored water and transparency of the stored water As a measure for, for the time when facility users do not use the pool, for example, at night, sodium hypochlorite is administered to the reservoir so that the residual chlorine concentration is about 5 times the specified amount. So-called superchlorination is widely used.
[0005]
As for superchlorination, the following two methods are conventionally known. That is, the first method is a method in which the facility administrator directly puts a tablet made of calcium hypochlorite into the water storage, and the second method quantifies sodium hypochlorite in the storage tank. This is a method of injecting water into a reservoir.
[0006]
[Problems to be solved by the invention]
However, in the first method, the number of tablets required is determined in consideration of the volume of the pool, and this amount is put into the water storage, aiming at the target residual chlorine concentration, The second method calculates the injection amount of sodium hypochlorite in consideration of the volume of the pool, and aims at the target residual chlorine concentration by injecting this injection amount with a metering pump. However, in any case, there is a problem that the residual chlorine concentration is not easily calculated.
[0007]
Therefore, conventionally, the facility administrator measures the residual chlorine concentration of the stored water after administration of sodium hypochlorite, and if the measured concentration is lower than the desired residual chlorine concentration, further administers sodium hypochlorite, If the measured concentration is higher than the desired residual chlorine concentration, the operation of diluting the stored water occurs, which is extremely troublesome. Moreover, since this operation is performed at night, it may cause labor costs.
[0008]
In addition, sodium hypochlorite has a strong bleaching action, so it should be avoided to adhere to the skin as much as possible, but you can take tablets directly or transfer commercially available sodium hypochlorite to a storage tank. This cannot be guaranteed with conventional methods involving work.
[0009]
Therefore, the present invention has been made in view of the above problems, and can automatically and accurately control the concentration of stored water at a specified time without relying on human hands, and can further reduce hypochlorous acid. it is an object of the present invention to provide a purification equipment of water storage facilities that can eliminate the opportunity to come into direct contact with soda.
[0010]
[Means for Solving the Problems]
In order to solve the above problems, a purification apparatus for a water storage facility according to the present invention is a purification apparatus for a water storage facility for purifying the water stored in a water tank, and circulates the water stored in the water tank. Therefore, a generation means for electrolyzing saline to produce sodium hypochlorite for a water storage tank to which one end and the other end of a pipe provided with a circulation pump are connected, and the obtained sodium hypochlorite and injection means for injecting into the piping, measuring means for measuring the residual chlorine concentration in the water upstream from the injection point of the pipe, control means for measuring concentration is controlled injection means so as to fall within a predetermined range And a clock means for enabling the time for controlling the injection means.
[0011]
According to the purification apparatus for a water storage facility having the above-described configuration, a process for generating sodium hypochlorite, a process for injecting the obtained sodium hypochlorite into a water tank, a process for measuring the residual chlorine concentration in the stored water, The residual chlorine concentration in the stored water is automatically stored in a predetermined range set in advance by the process of controlling the injection means. Further, by using the clock means, a desired residual chlorine concentration can be obtained at a specified time.
[0012]
Therefore, as in the method for purifying water stored in a water storage facility according to the present invention, sodium hypochlorite obtained by electrolyzing saline is injected into a water storage tank, and the residual chlorine concentration in this water storage is measured, It is possible to implement a method of automatically performing a series of these processes at a designated time, in which the injection of sodium hypochlorite is controlled so that the measured concentration falls within a predetermined range.
[0013]
Then, these series of processes, the facility user performed automatically in a time zone not to use the water storage facility, also of about 5 times the predetermined range, for example 0.4～1Ppm (specified amount) If it is set to a value, the sterilization of the stored water and the transparency of the stored water are automatically performed at the time when the facility user does not use, for example, at night, so the next day is hygienic and highly transparent. The water storage can be obtained, and the facility user can comfortably use the water storage facility.
[0014]
Further, as a method of performing the time specifying these series of processes, for example, to automatically start the first time specified, and, a method of automatically end the second time specified, the finger For example, a method of automatically starting at a predetermined time and ending automatically after the measured concentration falls within a predetermined range can be employed.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which a purification apparatus according to the present invention is applied to a pool facility will be described with reference to FIG.
[0016]
The purification device according to the present embodiment can be broadly divided into a generator 1 that electrolyzes salt water to generate sodium hypochlorite, and a sodium hypochlorite obtained by the generator 1 in a water tank ( And an injection device 20 for injecting into a pool 25.
[0017]
The generating device 1 includes a water supply tank 3 for storing supplied tap water, a salt dissolution tank 8 for generating saline, a diaphragmless electrolytic cell 11 for generating sodium hypochlorite, and supplied storage water. And a constant water tank 13 for storing (pool water).
[0018]
The water supply tank 3 and the salt dissolution tank 8 are connected via a pipe 5, the water supply tank 3 and the electrolytic tank 11 are connected via a pipe 6, and the salt dissolution tank 8 and the electrolytic tank 11 are It is connected via a pipe 9. Further, a pump 7 is interposed in the middle of the pipe 6 so that tap water in the water supply tank 3 can be supplied to the electrolytic cell 11. Furthermore, a pump 10 is interposed in the middle of the pipe 9 so that the saline in the salt dissolution tank 8 can be supplied to the electrolytic tank 11.
[0019]
A residual chlorine concentration meter 14 is disposed in the constant water tank 13, and the residual chlorine concentration in the stored water supplied into the constant water tank 13 can be measured.
[0020]
In addition, in the production | generation apparatus 1, 2 is connected to the water pipe which is not shown in figure, and is a pipe | tube for supplying the tap water in the water supply tank 3, 4 is the tap water stored in the water supply tank 3 outside. A drain pipe for discharging, 15 is a drain pipe for discharging the stored water stored in the constant water tank 13 to the outside, and 17 is for discharging the gas generated in the electrolytic tank 11 to the outside. This is an exhaust pipe.
[0021]
The injection device 20 is connected to the electrolytic cell 11 of the generating device 1 via a pipe 16 and stores a storage tank 21 for storing sodium hypochlorite supplied from the electrolytic cell 11, and the storage tank 21. A supply pipe 22 having one end inserted therein and an injection pump 23 interposed in the middle of the supply pipe 22 are provided. By operating the injection pump 23, the other end side of the supply pipe 22 is provided. It is possible to discharge sodium hypochlorite.
[0022]
The above-described pumps 7 and 10, solenoid valves provided on the pipe 5, and other components are controlled by a control unit 18 having a 24-hour timer or a calendar timer as a clock means. Yes.
[0023]
The purification device having the above configuration is connected to a circulation device 28 provided in the pool facility. Specifically, the circulation device 28 includes a pipe 29 that connects one end side and the other end side of the bottom of the water storage tank 25, a circulation pump 30 interposed in the middle of the pipe 29, and the circulation pump 30. Is also composed of a filter 31 on the downstream side, but the pipe 12 connected to the constant water tank 13 is connected to the pipe 29 between the circulation pump 30 and the filter 31, while being connected to the storage tank 21. The pipe 22 is connected to a pipe 29 on the downstream side of the filter 31.
[0024]
The purification apparatus according to the present embodiment has the above-described configuration. Next, a fluid circulation mode will be described.
[0025]
In the pool facility, the circulating pump 30 is operated, and the water stored in the water storage tank 25 is drawn from one end of the bottom of the water storage tank 25, passes through the pipe 29, is filtered by the filter 31, and then is stored at the bottom of the water storage tank 25. Returned to the other end. At this time, a part of the water stored in the pipe 29 flows into the pipe 12 branched from the pipe 29 and then stored in the constant water tank 13. In the constant water tank 13, the residual chlorine concentration meter 14 measures the residual chlorine concentration in the stored water.
[0026]
On the other hand, in the production apparatus 1, a desired amount of tap water stored in the water supply tank 3 through the pipe 2 is sent into the salt dissolution tank 8 through the pipe 5. Therefore, the salt put into the salt dissolution tank 8 is dissolved in this tap water, and the obtained salt solution is supplied to the electrolytic cell 11 through the pipe 9 in a fixed amount. Further, in the electrolytic cell 11, the saline solution is electrolyzed to generate sodium hypochlorite, and the obtained sodium hypochlorite is sent to the storage tank 21 of the injection device 20 through the pipe 16. .
[0027]
In the injection device 20, when the injection pump 23 receives the signal sent from the control unit 18, the injection pump 23 is activated, and the sodium hypochlorite in the storage tank 21 passes through the pipe 22. It is sent to the piping 29 of the circulation device 28. Therefore, the residual chlorine concentration of the stored water is increased by the addition of sodium hypochlorite.
[0028]
The flow mode of the fluid according to the present embodiment is as described above. Next, the control contents of the infusion pump 23 will be described separately for the case of normal concentration management and the case of superchlorination performed at night.
[0029]
First, normal concentration management means that the residual chlorine concentration in the stored water falls within the range of the specified value (0.4 to 1 ppm) stipulated by the law. The control content in such a case is shown in FIG. .
[0030]
That is, when the upper limit concentration value is set to 0.6 ppm and the lower limit concentration value is set to 0.5 ppm in the storage unit (not shown) of the control unit 18, the residual chlorine concentration in the stored water measured by the residual chlorine concentration meter 14 is The injection pump 23 operates from the low state (point A) to the lower limit concentration value (point B), and sodium hypochlorite stored in the storage tank 21 is injected into the stored water.
[0031]
When the residual chlorine concentration in the stored water exceeds the lower limit concentration value (from point B), the infusion pump 23 is stopped. At this time, since a predetermined time lag occurs until sodium hypochlorite diffuses throughout the water storage tank 25 and the residual chlorine concentration becomes stable, the residual chlorine concentration temporarily exceeds the upper limit concentration value (from C point to ) The phenomenon can occur.
[0032]
Thereafter, when the residual chlorine concentration in the stored water falls below the upper limit concentration value (from point D), the injection pump 23 is activated again. At this time, the residual chlorine concentration in the entire water storage tank 25 is attenuated due to oxidation, and the sodium hypochlorite that has already been introduced diffuses throughout the water storage tank 25 to stabilize the residual chlorine concentration. A predetermined time lag occurs until the residual chlorine concentration temporarily falls below the lower limit concentration value (from point E).
[0033]
As described above, when the residual chlorine concentration in the stored water rises due to the operation of the injection pump 23, the injection pump 23 stops when the residual chlorine concentration exceeds the lower limit concentration value, while the injection pump 23 stops. Then, when the residual chlorine concentration in the stored water falls, the control that the injection pump 23 operates when the residual chlorine concentration falls below the upper limit concentration value, the residual chlorine concentration is excessively increased or decreased too much. Can be detected early, and variations in residual chlorine concentration can be suppressed.
[0034]
On the other hand, the control content in the case of superchlorination is shown in FIG. In such a case, the target concentration value is set to 2 ppm (in this example, 5 times 0.4 ppm) in the storage unit of the control unit 18, and the operation start time of the infusion pump 23 is set to the T _When set to ₁ , when the time reaches T ₁ , the residual chlorine concentration meter 14 measures the residual chlorine concentration in the stored water, and the injection pump 23 is operated to store hypochlorous acid stored in the storage tank 21. Acid soda is injected into the reservoir (point A ′).
[0035]
Thereafter, when the residual chlorine concentration in the stored water reaches the target concentration value (point B ′), the injection pump 23 is stopped. In this way, by setting the residual chlorine concentration in the stored water to a concentration higher than the specified value during the night time, superchlorination is performed, and sterilization of the stored water and clearing of the stored water are automatically performed. It will be.
[0036]
In addition, the control content of super chlorination is not limited to the above-mentioned thing, For example, the following methods are also employable. That is, the operation start time (first time) of the infusion pump 23 is set, the operation stop time (second time) of the infusion pump 23 is set after a predetermined time, and the vicinity thereof is used instead of the target concentration value. In addition to setting the upper limit concentration value and lower limit concentration value, and adopting the control contents in the normal concentration management described above, superchlorination starts from the state where the residual chlorine concentration in the stored water is stabilized near the target concentration value Therefore, a more reliable effect can be expected.
[0037]
Although superchlorination can be automatically performed every day using the above-described method, superchlorination may be performed only on a desired day by using a calendar timer. And the start time setting of super chlorination can be changed every day. The start time setting may be not only at night but also in the daytime. In short, it is only necessary to perform superchlorination in a time zone that is not used by facility users.
[0038]
Furthermore, the target density value may be switched at a designated time using a 24-hour timer or a calendar timer. Thereby, for example, from 8 am to 12:00 am, the facility user uses the water storage facility such that the target concentration value is set to 0.4 to 0.5 ppm, and the target concentration value is set to 1 ppm from the afternoon. In the time zone, while maintaining the specified amount (0.4 to 1 ppm) within the range, by changing the target concentration value according to the number of facility users, the residual chlorine concentration in the stored water is always maintained in a suitable state. can do. However, the target concentration value switched according to time is not set only within the range of the specified amount (0.4 to 1 ppm). For example, the target concentration value is set to 0.5 ppm from the designated first time (the time when the facility user starts to use the water storage facility), and the designated second time (the facility user Naturally, it is conceivable that the concentration is set to 2 ppm from the time when the use of the water storage facility is completed or the time in the vicinity thereof.
[0039]
【The invention's effect】
A purification apparatus for a water storage facility and a method for purifying water stored in the water storage facility having the above-described structure are a process for generating sodium hypochlorite, a process for injecting the obtained sodium hypochlorite into a water storage tank, a residual chlorine in the water storage Since the process of measuring the concentration and the process of controlling the injection means are adopted, the concentration of the stored water can be adjusted automatically and accurately by specifying the time without relying on humans. Since there is no opportunity to touch sodium chlorite, the safety of the facility manager can be ensured.
[Brief description of the drawings]
FIG. 1 is a flow diaphragm showing a purification apparatus for a water storage facility according to an embodiment of the present invention.
[Fig. 2] Fig. 2 shows a control state in normal concentration management, (A) is a diagram showing a change with time in residual chlorine concentration in stored water, and (B) is a control content of the injection pump at that time.
FIG. 3 shows the control state in superchlorination, where (a) shows the change over time in the residual chlorine concentration in the stored water, and (b) shows the control content of the injection pump at that time.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Production | generation apparatus, 8 ... Salt dissolution tank, 11 ... Electrolysis tank, 13 ... Constant water tank, 14 ... Residual chlorine concentration meter, 18 ... Control part, 20 ... Injection apparatus, 21 ... Storage tank, 23 ... Injection pump, 25 ... Water storage tank

Claims (4)

A purification device of a water storage facility for purifying water stored in a water storage tank, wherein one end and the other end of a pipe provided with a circulation pump are connected to circulate the water stored in the water storage tank targeting, and generating means for generating hypochlorous acid soda brine electrolysis, an injection means for injecting sodium hypochlorite obtained in the pipe, upstream of the injection point of the pipe A measuring means for measuring the residual chlorine concentration in the stored water, and a control means for controlling the injecting means so that the measured concentration falls within a predetermined range. A purification apparatus for a water storage facility, characterized by comprising means. The generating means includes a water supply tank, a salt dissolution tank that generates salt water by dissolving salt with the water supplied from the water supply tank, and electrolyzing the salt water supplied from the salt dissolution tank. The purification apparatus for a water storage facility according to claim 1, further comprising an electrolytic cell for producing sodium hypochlorite. The injection means includes a storage tank for storing sodium hypochlorite supplied from the electrolytic cell, a supply pipe having one end inserted into the storage tank and the other end connected to the pipe, and the supply pipe The purification apparatus of the water storage facility of Claim 1 or 2 provided with the infusion pump interposed in the middle position of. The pipe is provided with a filter downstream of the circulation pump, and the injection means injects sodium hypochlorite downstream of the pipe filter, and the measurement means The purification apparatus for a water storage facility according to any one of claims 1 to 3, wherein a residual chlorine concentration in the stored water is measured between a circulation pump of a pipe and a filter.

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