KR100757209B1 - Simple waterworks system - Google Patents

Abstract

A simple waterworks system remotely controlling an electrolytic sterilizing disinfectant supplying equipment producing optimal sterilizing disinfectant by injecting brine with a predetermined concentration into the distributing reservoir according to a water level and a residual chlorine concentration of a distributing reservoir is provided. A simple waterworks system comprises: a sensor part(833) installed at a distributing reservoir(830) and comprised of a sensor(831) sensing a residual chlorine concentration and sensors(832) sensing a water level; a transmitter(811) transmitting a signal of the sensor part; a pump station(820) having a receiver(822), a controller(823), and a pump(821); an electrolytic sterilizing disinfectant supplying apparatus(202) including a control part, a raw water supply line, a branch pipe, an electrolytic sterilizing equipment, a metering pump, and a connecting pipe; and a microprocessor(840) remotely controlling the controller to control remotely the electrolytic sterilizing disinfectant supplying apparatus, wherein the electrolytic sterilizing equipment comprises: a salt solution supply unit comprised of a housing, a radial impeller, a raw water discharge part, a diffusion controlling stirrer, a diffusion control part, and a brine discharge pipe; and an electrolytic cell electrolyzing a salt solution supplied from the salt solution supply unit to produce sodium hypochlorite, and supplying electrolytic sterilizing disinfectant containing the sodium hypochlorite to the raw water supply line.

Description

Simple Waterworks System

1 is a view schematically showing a liver abnormal water system according to an embodiment of the present invention,

2 is a view schematically showing an electrolytic sterilization water supply apparatus provided in the liver abnormal water system according to an embodiment of the present invention;

Figure 3 is a cross-sectional view showing the internal configuration by expanding the salt solution supply device of the electrolytic sterilization water supply device of Figure 2,

Figure 4 is a perspective view showing the internal configuration in detail by expanding the electrolytic cell of the electrolytic sterilization water supply device of Figure 2,

5 is a view showing another embodiment of the electrolytic sterilization water supply apparatus according to the present invention,

6 is a view showing another embodiment of the electrolytic sterilization water supply apparatus according to the present invention.

<Description of Symbols for Major Parts of Drawings>

1: raw water supply line 2: branch pipe

3: pressure reducing valve 100: salt solution supply device

111: radial impeller 112: raw water inlet pipe

113: magnet 115: micro flowmeter

121: rotating shaft 122: impeller

120: diffusion control stirrer 130: diffusion control unit

140: salt water discharge pipe 150: housing

200: electrolytic cell 210: unit cell

211: separator 212: mesh electrode

213: anode wire portion 214: cathode wire portion

300: control unit 400: metering pump

500: check valve 600: raw water storage tank

610: ball top 810: absorption tablet

811 transmitter 820 pump station

821: pump 822: receiver

823: controller 830: reservoir

840: microprocessor

The present invention is equipped with a device for supplying salt solution and an electrolytic sterilization device for producing sodium hypochlorite including an electrolysis cell in a well tank located at the top of the mountain, installed in the well of a small water supply facility. On the contrary, it relates to a simple water supply that can be easily managed even by non-experts or installed in a water tank.

In general, sodium hypochlorite (NaOCl, Sodium Hypochloride) is used as water purification plant, sterilizer in sewage treatment plant, cooling water boiler in general chemical plant, desalination process water, cooling water treatment in power plant, drinking water treatment, swimming pool and paper, household bleach Colorless clear liquid with strong chlorine odor, which is difficult to manage and can cause severe side effects such as burns and discoloration.

Without supplying the above-mentioned sodium hypochlorite as a chemical and supplying it regularly, an electrolytic device is needed to electrolyze chlorine ions dissolved in water or to deliver salt solution in the field. The device was needed.

In the case of the well, a metering pump was used to quantitatively supply the salt solution to the electrolytic cell or to inject the produced sodium hypochlorite. In the case of using a metering pump, the diaphragm of the metering pump ages for a long time, or when discontinuously used, salt precipitates in the metering pump, causing abnormal operation of the pump. As a result, the generation amount and concentration change of sodium hypochlorite is generated, and the pump operation for supplying the generated sodium hypochlorite to the tap water pipe is not smooth, and thus, the electrolytic disinfectant water of the required effect cannot be generated. In particular, it was difficult to maintain or input accurate concentration due to the drop in concentration due to the scattering of chlorine ions in summer when the temperature is greatly increased.

The present invention has been made to solve the above problems, the object of the present invention is to supply the electrolytic disinfectant sterilization water to generate the optimal disinfectant sterilized water by inputting a certain concentration of brine in accordance with the water level of the reservoir and the residual chlorine concentration A simple water supply system for remotely controlling a device is provided.

An object of the present invention as described above, in the conventional liver water supply system for supplying raw water from the absorption well to the drainage by using a pump in the pumping station, provided in the drainage, the sensor for detecting the residual chlorine concentration and the water level Sensor unit consisting of a sensor; A transmitter for transmitting a signal of the sensor unit; A pump station including a receiver for receiving a signal transmitted from the transmitter, a controller for outputting a control signal based on the signal, and a pump operated based on the control signal; A control unit operated based on the control signal, a raw water supply line provided for supplying raw water introduced from the absorption well, and a branch pipe branched from the side of the raw water supply line to guide raw water, and the branch pipe. An electrolytic sterilization apparatus which extracts a salt solution from raw water obtained from the branch pipe and electrolyzes the salt solution to generate electrolytic sterilization water, and a metering pump pumping the electrolytic sterilization water and supplying it to a drain Electrolytic sterilization water supply device consisting of a connection pipe connecting the pump and the raw water supply line; And a microprocessor for remotely controlling the controller by wire or wirelessly so as to remotely control the electrolytic disinfectant water supply device.

On the other hand, in the present invention, the electrolytic sterilizer, a housing for inducing the raw water introduced into the branch pipe, a radial impeller provided in the inner upper portion of the housing, rotated by the flow rate of the raw water flowing in, and the radial Raw water discharge portion formed by a pipe of a predetermined length vertically from one side lower end of the impeller, and interlocked with the radial impeller, forming a rotation axis extending vertically vertically from the center of the radial impeller, the diffusion control having an impeller at its tip A salt solution supply device formed by forming a stirrer and a salt control pipe installed at the center of the diffusion control stirrer and a salt water discharge pipe connected to an upper portion of the diffusion control unit to discharge the salt solution dissolved by the diffusion control stirrer; And salt solution from the salt solution supply device and electrolyzed to obtain sodium hypochlorite. It characterized in that the electrolyte consisting of the castle made sterile sodoksu to the electrolytic cell provided with the raw water supply line.

In addition, in the present invention, it is preferable to further provide a check valve between the metering pump and the connecting pipe in order to prevent the raw water of the raw water supply line back to the metering pump.

In addition, in the present invention, it is preferable to further comprise a raw water storage tank having a ball tower between the branch pipe and the electrolytic sterilization device when the water level reaches a certain level.

In addition, the salt solution supply apparatus of the present invention, the magnet is mounted to the end of the radial impeller, and a sensor for detecting the rotational amount or rotational speed of the magnet in conjunction with the radial impeller to measure the amount of raw water introduced It is preferable to further provide a micro flowmeter.

These and other objects, advantages and features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings of preferred embodiments.

Hereinafter, with reference to the drawings showing a liver abnormal water system in accordance with an embodiment of the present invention will be described in detail.

1 is a view schematically showing a liver abnormal water system according to an embodiment of the present invention, Figure 2 is a view schematically showing an electrolytic sterilization water supply apparatus provided in the liver abnormal water system according to an embodiment of the present invention, 3 is a cross-sectional view illustrating an internal configuration by expanding a salt solution supply apparatus of the electrolytic sterilization water supply apparatus of FIG. 2, and FIG. 4 is a perspective view illustrating an internal configuration in detail by expanding an electrolytic cell of the electrolytic sterilization water supply apparatus of FIG. 2. .

On the other hand, Figure 5 is a view showing another embodiment of the electrolytic sterilization water supply apparatus according to the present invention, Figure 6 is a view showing another embodiment of the electrolytic sterilization water supply apparatus according to the present invention.

Therefore, the present invention will be described with reference to FIGS. 1 to 6.

As shown in the drawing, the liver abnormality water system according to the present invention uses the pump 821 of the pump station 820 in the conventional liver abnormal water system to supply raw water from the absorption well 810 to the drainage basin 830. A sensor unit 833 provided at 830 and including a sensor 831 for detecting residual chlorine concentration and a sensor 832 for detecting water level; A transmitter 811 for transmitting a signal from the sensor unit 833; A pump station including a receiver 822 for receiving a signal transmitted from the transmitter 811, a controller 823 for outputting a control signal based on the signal, and a pump 821 operated based on the control signal. 820; The control unit 300 is operated based on the control signal, the raw water supply line (1) and the raw water supply line (1) provided for supplying the raw water flowing from the absorption well 810 to the reservoir 830 Branching pipe (2) branched from the side to guide the raw water, and connected to the branch pipe (2) and extracts the salt solution from the raw water obtained from the branch pipe (2) and electrolytically disinfecting the salt solution by electrolytic sterilization water Electrolytic sterilization device 201 to generate a, and the connecting pipe (5) for connecting the quantitative pump 400 and the quantitative pump 400 and the raw water supply line (1) to pump the electrolytic sterilization water supply to the drainage Electrolytic sterilization water supply device 202 is configured; And a microprocessor 840 for remotely controlling the controller 823 in a wired or wireless manner so as to remotely control the electrolytic disinfectant water supply device 202.

Sensor unit 833 is composed of a sensor 831 for detecting the residual chlorine concentration and a sensor 832 for detecting the water level. The sensor unit 833 detects the residual chlorine concentration and the water level and sends a signal, and the controller 823 of the pump station 820 controls the operation of the pump 821 based on the signal. The sensor 832 for detecting the water level among the sensors may be installed on the upper side and the lower side of the drain 830 to determine whether the water level is full or low. Turbidity is also controlled on the same principle as above.

The transmitter 811 may be provided at any position of the drain 830 as a role of transmitting a signal sensed by the sensor unit 833.

The receiver 822 receives the signal transmitted from the transmitter 811, that is, the signal from the sensor unit 833, and provides the received signal to the controller 823, which will be described later. The receiver 822 may be included in the pump station 820, may be embedded in the controller 823, and may be provided externally as an external type.

The controller 823 is provided in the pump station 820 to control the pump 821 based on a signal input from the receiver 822. For example, when the sensor unit 833 of the reservoir 830 detects the full water level and is input to the controller 823 through the transmitter 811 and the receiver 822, the controller 823 stops the operation of the pump 821. Let's do it. On the contrary, when the sensor unit 833 detects the low water level, the controller 823 starts the pump 821.

On the other hand, the controller 823 is configured to control the operation of the electrolytic disinfectant water supply device 202 to be described later in accordance with the signal of the sensor 831 for detecting the residual chlorine concentration of the sensor unit 833.

The operational relationship and detailed configuration of the sensor 831, the controller 823, and the electrolytic sterilization water supply device 202 will be described in more detail with reference to preferred embodiments described below.

The electrolytic sterilization water supply device 202 supplies the raw water supply line 1 and the raw water supply connected from the absorption well 810 to the drainage basin 830 to supply the raw water flowing from the absorption well 810 to the drainage basin 830. Salt in the raw water flowing into the branch pipe (2) and the branch pipe (2) connected to the side of the raw water supply line (1) and the branch pipe (2) to induce raw water from the line side of the line (1) Electrolytic sterilization apparatus 201 for extracting the solution and electrolytically dissolving the salt solution and the metering pump 400 for pumping the electrolytic sterilization water and supplying it to the drainage, and the metering pump 400 and raw water supply It consists of a connecting pipe 5 connecting the line 1.

Here, the electrolytic sterilizer 201 is provided with a housing 150 for guiding the raw water introduced into the branch pipe 2 and a radial impeller provided on the inner upper portion of the housing 150 to rotate by the flow rate of the raw water flowing in. (111), the raw water discharge portion 116 formed of a pipe of a predetermined length vertically from one side lower end of the radial impeller 111, and the radial impeller 111 interlocked with, from the center of the radial impeller 111 In order to discharge the salt solution dissolved by the diffusion control stirrer 120 and the diffusion control stirrer 120 having an impeller 122 at its tip to form a rotating shaft 121 vertically extending a predetermined length Salt solution supply device 100 formed by forming a diffusion control unit 130 is installed in the center of the diffusion control stirrer 120 and the diffusion control unit 130, the salt solution discharge pipe 140; and the salt solution Supply salt solution from feeder 100 It is composed of an electrolyzer 200 for providing electrolytic sterilization water to the raw water supply line 1 by receiving and electrolyzing it to produce sodium hypochlorite.

The salt solution supply device 100 is a diffusion control stirrer 120 is installed into the salt solution supply device 100 from the top. The upper portion of the diffusion control stirrer 120 is provided with a radial impeller 111 that is rotated by the raw water introduced from the branch pipe (2) connected to the salt solution supply device (100).

Diffusion control stirrer 120 is coupled to the lower portion of the radial impeller 111 is composed of a rotating shaft 121 and the impeller 122, it is installed into the salt solution supply device (100). The lower center of the radial impeller 111 is connected to the rotary shaft 121 interlocked with the radial impeller 111, and the raw water introduced into the lower portion of the rotary shaft 121 is stored in the salt solution supply apparatus 100. An impeller 122 which serves to stir to dissolve the salt is provided. Accordingly, the impeller 122 is rotated along with the rotation shaft 121 according to the rotation of the radial impeller 111, and dissolves the salt stored in the salt solution supply device 100 by the rotation, the radial impeller When the rotation speed and the rotation amount of the 111 is high, the rotation of the impeller 122 is increased, thereby maintaining and supplying a constant salt water concentration.

Water introduced into the salt solution supplying device 100 rotates the radial impeller 111 and is introduced into the housing 150 of the salt solution supplying device 100 through the raw water discharge part 116 and a part of the salt solution supplying. The salt is supplied into the apparatus 100 to dissolve the salt 170 stored therein, and the portion is moved to the electrolyzer 200 through the brine discharge unit 140 connected to the diffusion control unit 130.

At this time, the radial impeller 111 is interlocked with the diffusion control stirrer 120, the rotational speed of the impeller 122 of the diffusion control stirrer 120 according to the amount of water introduced into the salt solution supply device 100 It will be different, so the brine concentration can be kept constant depending on the amount of water introduced. That is, when the amount of water introduced is large, the rotational speed of the radial impeller 111 is increased, and the rotational speed of the impeller 122 of the diffusion control stirrer 120 interlocked with this is increased, thereby increasing the salt water concentration value. When the amount of water introduced is small, the rotational speed of the radial impeller 111 is slowed down, and the rotational speed of the impeller 122 of the diffusion control sputterer 120 interlocked with this is lowered, so that the salt water concentration can be lowered. The concentration value can be made constant.

The diffusion control unit 130 is connected to the salt solution supply device 100 serves to discharge the salt water dissolved in the diffusion action by the diffusion action. At this time, since the diffusion speed decreases when the length of the diffusion control unit 130 is long and the diffusion speed increases when the diffusion control unit 130 is short, the diffusion speed can be adjusted by adjusting the length of the diffusion control unit 130. When the diffusion rate of the diffusion control unit 130 increases, the chlorine concentration of the brine supplied from the salt solution supply device 100 increases, while when the diffusion rate of the diffusion control unit 130 decreases, the chlorine concentration decreases. By being able to control the chlorine concentration of the brine.

The brine discharge pipe 140 serves to discharge the brine discharged from the diffusion control unit 130 to the outside to be introduced into the electrolytic cell 200.

On the other hand, the branch pipe (2) is provided with a decompression valve (3) for minimizing the pressure of the salt solution supply device 100 and the electrolytic cell 200 by reducing the pressure of the raw water flowing into the salt solution supply device (100) . When the pressure reducing valve 3 is opened, the raw water is partially introduced through the branch pipe 2 to be introduced into the salt solution supply device 100 while rotating the radial impeller 111. At this time, the open / close valve 4 provided in the raw water supply line 1 allows the raw water to flow into the branch pipe 2 by locking.

Meanwhile, a magnet 113 is attached to an end portion of the radial impeller 111 of the salt solution supply device 100 so as to interlock with the radial impeller 111. Next, the amount of raw water introduced into the salt solution supply device 100 may be measured by using the microflowmeter 115 including the sensor 114 that detects a pulse generated by the rotation of the magnet 113.

In addition, the micro flowmeter 115 is preferably to be periodically measured by a timer (not shown) operated by the control of the control unit 300 to be described later in order to reduce power consumption. Accordingly, it can be usefully used when it is not easy to use a general commercial power supply.

In addition, the flow rate is calculated by detecting the pulse generated by the magnet 113 provided at the end of the radial impeller 111 to calculate the cumulative flow rate and to calculate the salt replacement time for the cumulative flow rate.

The electrolyzer 200 receives the brine discharged from the brine discharge pipe 140 of the salt solution supply device 100 and electrolyzes the introduced brine to generate sodium hypochlorite to generate electrolytic sterilization water containing the raw water. It serves to feed the line (1).

The electrolyzer 200 uses the unit electrolysis cell 210 disclosed in Patent Application No. 10-2005-0027836 filed by the applicant of the present invention (name of the invention: sterilized oxidation water production apparatus using an overpotential electrode electrolytic cell) May be any, it is shown in FIG. The unit electrolytic cell 210 is provided with a separator 211 and a mesh electrode 212, and is provided with positive and negative wire portions 213 and 214 for supplying power to the unit electrolytic cell 210. The mesh electrodes 212 are each connected in parallel.

The electrode used in the electrolytic cell is preferably a DSA (Dimensionally Stable Anode) electrode coated with ruthenium or iridium on the outside of titanium. The DSA electrode has a relatively low overvoltage for oxygen generation, and the toxic organic substance itself on the surface of the electrode is also oxidized by various types of active oxygen having strong oxidizing power generated before and after the oxygen generation potential.

The DSA electrode is an insoluble electrode and has a relatively low overvoltage for oxygen generation, and toxic organic matter itself is also oxidized on the electrode surface by various types of active oxygen having strong oxidizing power generated before and after oxygen generation potential. There is a characteristic.

The salt solution introduced into the electrolytic cell generates sodium hypochlorite in the electrolytic cell.

In this case, when electricity is applied, the reaction occurring at the cathode

2H2O + 2Na + + 2e- → 2NaOH + H2

2H 2 O + 2e-→ H 2 + OH-

The reaction at the anode

2Cl--2e- → Cl2

2H20-4e- → 4H + + O2

Cl2 + H2O ↔ HClO + HCl.

Here, sodium hydroxide (NaOH) generated at the cathode and chlorine gas at the positive electrode are combined to generate sodium hypochlorite (NaOCl).

The control unit 300 is the strength of the voltage and current supplied to the electrolytic cell 200, the operation of the electrolytic cell 200, the micro flow meter 115, the operation of a timer (not shown) and the metering pump 400 and various valves ( Control 3, 4).

The metering pump 400 is connected between the connecting pipe 5 and the electrolytic cell 200 and is provided to quantitatively supply the electrolytic disinfectant water discharged from the electrolytic cell 200 to the drain 830.

On the other hand, the side of the connection pipe 5 is connected to the metering pump 400 is preferably provided with a check valve 500 to prevent the raw water of the raw water supply line (1) does not flow back to the metering pump (400) Do.

In addition, the microprocessor 840 is provided to remotely control the electrolytic disinfectant water supply device 202 having such a configuration. In the case of a short-range communication method, a control line is directly connected and used in a long distance. A method of transmitting and receiving using a dedicated line or a wireless communication network (CDMA) is used.

As shown in FIG. 1, the signal transmission and reception at the reservoir 830 and the pump station 820 may be performed using a dedicated line or a wireless communication network. The transmission and reception between the pump station 820 and the microprocessor 840 may also be performed in the same manner. . In the microprocessor 840, a system for transmitting an operating state of the system to the administrator through a text message (SMS) or the like may be separately provided.

And, in the present invention, as shown in Figure 6 may be further provided with a raw water storage tank 600 having a ball tower 610 for adjusting the water level on the branch pipe (2). FIG. 6 shows that the raw water storage tank 600 and the ball tower 610 are separately installed so that the pressure of the salt solution supply device and the electrolysis cell is set to atmospheric pressure and injected into the metering pump 400.

In addition, the present invention can be modified to supply a large amount of salt solution by making the salt solution supply device 100 in a large cube rather than a cylindrical shape.

Example 1

When the sensor unit 833 of the reservoir 830 detects a low water level and a low residual chlorine concentration, the transmitter 811 of the reservoir 830 receives a signal of the sensor unit 833 and receives a receiver of the pump station 820. Send to (822). Next, the controller 823 receiving the signal of the receiver 822 operates the control unit 300 provided in the pump 821 and the electrolytic sterilization water supply device 202.

The pump 821 of the pump station 820 is operated until the level of the reservoir 830 is sensed to a certain level, that is, the sensor 832 provided on the upper portion of the reservoir 830.

On the other hand, the control unit 300 provided in the electrolytic disinfectant water supply device 202 operated by the controller 823 is low in the chlorine concentration of the drain 830, so as to maintain it at a constant rate of the radial impeller 111 The flow rate is increased by operating the pump 821 in order to speed up the dissolution rate of the salt stored in the salt solution supply device 100 by receiving a signal of the micro flowmeter 115 that checks the total amount and calculates the flow rate. Therefore, in this process, the salt solution supply device 100 discharges the concentrated salt solution into the electrolytic cell 200. Then, the electrolytic cell 200 is provided with a concentrated salt solution to produce a large amount of sodium hypochlorite to produce electrolytic disinfectant water containing it. And before discharging the electrolytic sterilization water to the drainage basin 830, by adjusting the discharge by the metering pump 400 it is possible to maintain a constant chlorine content of the drainage basin (830).

As described above, the liver abnormal water system according to an embodiment of the present invention is installed in the wells of small-scale simplified water supply facilities to generate sodium hypochlorite in water to suppress general bacteria or other microorganisms, and thus does not use general chlorine medicine. Sodium hypochlorite can be generated without salt solution or salt solution, and it is easy to manage, and it is effective to make it easy for the manager to manage even people without expertise. In addition, it is possible to monitor the drainage turbidity, residual chlorine concentration, water level, etc. in the liver abnormal water system, and to provide integrated monitoring control by remote control.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be readily apparent to those skilled in the art that various other modifications and variations are possible without departing from the spirit and scope of the present invention. It is obvious that all belong to the appended claims.

Claims (5)

In a conventional simple water supply system for supplying raw water from an absorption well to a drain using a pump in a pumping station, A sensor unit 833 provided at the drain 830 and comprising a sensor 831 for detecting residual chlorine concentration and a sensor 832 for detecting a water level; A transmitter 811 for transmitting a signal from the sensor unit 833; A pump station including a receiver 822 for receiving a signal transmitted from the transmitter 811, a controller 823 for outputting a control signal based on the signal, and a pump 821 operated based on the control signal. 820; The control unit 300 is operated based on the control signal, the raw water supply line (1) and the raw water supply line (1) provided for supplying the raw water flowing from the absorption well 810 to the reservoir 830 Branching pipe (2) branched from the side to guide the raw water, and connected to the branch pipe (2) and extracts the salt solution from the raw water obtained from the branch pipe (2) and electrolytically disinfecting the salt solution by electrolytic sterilization water Electrolytic sterilization device 201 to generate a, and the connecting pipe (5) for connecting the quantitative pump 400 and the quantitative pump 400 and the raw water supply line (1) to pump the electrolytic sterilization water supply to the drainage Electrolytic sterilization water supply device 202 is configured; And The microprocessor 840 is configured to remotely control the controller 823 so as to remotely control the electrolytic sterilization water supply device 202, The electrolytic sterilizer 201, A housing 150 for guiding raw water introduced into the branch pipe 2, a radial impeller 111 provided at an inner upper portion of the housing 150 to rotate by the flow rate of the raw water flowing therein, and the radial impeller ( Raw water discharge portion 116 formed by a pipe of a predetermined length vertically from one side lower end of the 111, and the rotary shaft 121 is interlocked with the radial impeller 111, and extends a predetermined length vertically from the center of the radial impeller 111 The center of the diffusion control stirrer 120 to discharge the salt solution dissolved by the diffusion control stirrer 120 and the diffusion control stirrer 120 having an impeller 122 at its tip. Salt solution supply device 100 formed by forming a diffusion control unit 130 and the salt water discharge pipe 140 is connected to the diffusion control unit 130 installed in the upper portion; Liver abnormality water system, characterized in that consisting of an electrolytic cell 200 to provide the electrolytic disinfectant water to the raw water supply line (1) by receiving a salt solution from the salt solution supply device 100 to electrolyze it to produce sodium hypochlorite . The method of claim 1, In order to prevent the raw water of the raw water supply line (1) to flow back to the metering pump 400, characterized in that it further comprises a check valve 500 between the metering pump 400 and the connecting pipe (5) Liver water system. The method of claim 1, Simple water supply system between the branch pipe (2) and the electrolytic sterilizer 202 further comprises a raw water storage tank 600 having a ball tower 610 to block the supply of raw water when a certain water level is reached. . The method of claim 1, The salt solution supply device 100, The magnet 113 mounted at the end of the radial impeller 111, and the sensor 114 for detecting the rotational amount or rotational speed of the magnet 113 in conjunction with the radial impeller 111, the incoming of raw water Simple water supply system further comprises a micro-flowmeter (115) for measuring the amount. delete

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