JP4267755B2 - Water treatment equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water treatment apparatus such as a water conditioner or a water purifier.
[0002]
[Prior art]
In the water conditioner and the water purifier, activated carbon or the like is used as a filter medium to treat residual chlorine, organic matter, and the like in tap water. Since the residual chlorine, which is a disinfectant, has been removed from the water after passing through the filter medium by this activated carbon, the remaining water in the filter medium and the residual water remaining in the container when the water conditioner and water purifier are not used for a long time. There is a problem that bacteria in the water grow. In general, in order to suppress the growth of bacteria, a method using antibacterial activated carbon with silver attached as activated carbon in the filter medium is used. When this antibacterial activated carbon comes into contact with water, it elutes silver ions, and the silver ions can suppress bacterial growth.
[0003]
[Problems to be solved by the invention]
However, antibacterial activated carbon impregnated with silver has a silver ion elution period of about several days, and it is difficult to suppress bacterial growth in the residual water inside the filter medium and the residual water remaining in the main body for a long time. is there.
The object of the present invention is to solve the problems of the prior art.
[0004]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a water treatment apparatus including a filter medium,
A means for supplying silver ions by electrolysis of silver provided upstream of the filter medium, a flow rate detecting means for detecting a flow rate of the supplied water supplied to the water treatment device, and a flow rate of the supplied water from the flow rate detecting means. And a control means for controlling the amount of silver electrolysis by controlling the current for electrolysis of the silver, and the control means intermittently supplies silver ions by the means for supplying silver ions. The problem was solved by using a water treatment device that was controlled to supply.
The silver ions can suppress the growth of bacteria in the residual water in the water treatment apparatus and the retained water of the filter medium. Moreover, since the flow rate of the feed water can be detected and the amount of silver ions delivered can be controlled based on this, an appropriate antibacterial action can always be obtained.
By supplying silver ions from the means for supplying silver ions, the silver ions are adsorbed on the downstream filter medium and gradually dissolved in water from the filter medium, so that a continuous effect can be obtained.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0006]
FIG. 1 shows one embodiment.
In FIG. 1, supply water such as tap water is supplied to the water purification cartridge 10 from upstream, and the supply water is purified by a filter medium such as activated carbon stored in the water purification cartridge 10 to flow downstream.
A silver ion supply device 1 is provided on the upstream side of the water purification cartridge 10, and silver ions are added to the supply water continuously or intermittently. The silver ions added to the supply water are adsorbed by the filter medium (activated carbon etc.) of the water purification cartridge 10 and maintain the antibacterial action for a predetermined time even after the supply of silver ions from the silver ion supply device 1 is stopped. Yes.
[0007]
The silver ion supply device 1 is a supply device by electrolysis of silver, and has a structure in which a silver dissolution tank 8 is provided with a silver electrode 6 as an anode and an insoluble electrode 7 as a cathode. Silver ions are supplied into the supply water by energizing the electrodes 6 and 7 every predetermined time. Platinum, gold, carbon rod, SUS, Ti, Ti—Pt can be used as the insoluble electrode 7.
The elution amount of silver ions is determined by Faraday's law as shown below. Therefore, the silver ion concentration of the feed water by the addition of silver ions can be made constant by detecting the flow rate of the feed water and controlling the current value flowing between the silver electrode and the insoluble electrode according to the detected value. it can. In addition, an arbitrary concentration can be obtained by current value control.
Elution amount of silver (g) = 1 gram equivalent of silver (g) x {current value (A) x time (sec) ÷ 96500 (q)}
Concentration of silver in feed water (g / L) = 1 gram equivalent of silver (g) x
{Current value (A) ÷ (96500 (q) x Flow rate (L / sec))}
[0009]
In order to detect the flow rate, a flow rate counter 5 is provided in the flow path of the supply water. In this embodiment, a flow rate counter 5 is provided between the silver ion supply device 1 and the water purification cartridge 10 to send a flow rate signal to the supply control device 3.
The supply control device 3 obtains a current value according to the above formula based on the flow rate signal from the flow rate counter 5, and controls the current value supplied to the silver electrode 6 and the insoluble electrode 7 via the current value control device 30. ing. By this current value control, the silver ion concentration can be made constant as described above. In addition, the silver ion concentration can be arbitrarily controlled.
[0010]
The supply control device 3 obtains a cumulative flow rate value based on the flow rate signal from the flow rate counter 5, and when it reaches a predetermined value, it sends a signal to the current value control device 30 to supply silver ions for a predetermined time, thereby intermittently silvering. Ru to perform the supply of the ion.
[0011]
Then explaining the operation of the embodiment.
In FIG. 2 , the supply control device 3 detects and integrates the value from the flow rate counter 5 (step S10). When the accumulated value reaches a predetermined value (step S11), the current value is similarly calculated (step S12). A signal is sent to the value control device 30, and the silver electrode 6 and the insoluble electrode 7 are energized based on the current value (step S13). When energized for a predetermined time (step S14), the current is stopped (step S15), and the process returns to step S10.
By the above operation, a constant amount of silver ions can be supplied intermittently.
[001 2 ]
According to the embodiment described above, silver ions having a constant concentration can be supplied in a water purifier, a water conditioner, or the like, and bacterial growth in residual water or stagnant water can be suppressed on the main body or filter medium. In addition, since intermittent driving can be performed accurately, efficient antibacterial action can be properly maintained.
[001 3 ]
【The invention's effect】
As described above, according to the water treatment apparatus of the present invention, there is an effect of suppressing the growth of bacteria.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an embodiment of the present invention.
FIG. 2 is a flowchart showing another operation of the embodiment of the present invention.
[Explanation of symbols]
1: Silver ion supply device, 3: Supply control device, 5: Flow rate counter, 6: Silver electrode, 7: Insoluble electrode, 8: Silver dissolution tank, 10: Water purification cartridge, 30: Current value control device.

Claims (1)

In a water treatment device equipped with a filter medium,
Means for supplying silver ions by electrolysis of silver provided upstream of the filter medium;
Flow rate detection means for detecting the flow rate of the feed water supplied to the water treatment device;
Control means for controlling the amount of electrolyzed silver by controlling the current for electrolysis of silver based on the flow rate of the supply water from the flow rate detecting means,
The control means controls the supply of silver ions by the means for supplying silver ions to be intermittently supplied.
The water treatment apparatus characterized by the above-mentioned.

Images