KR100947256B1 - Electrolysis apparatus for water treatment - Google Patents

Abstract

PURPOSE: An electrolyzer for water treatment is provided to produce scale preventing effects by increasing speed of sterilization and disinfection water through a circulating flow passage, and to reduce manufacturing costs of the electrolyzer. CONSTITUTION: An electrolyzer for water treatment includes the following: a diluted salt water manufacturing device(1) manufacturing a diluted sodium chloride solution by receiving water; a circulating pump(3) supplying sterilization and disinfection water and the diluted sodium chloride solution or the diluted sodium chloride solution to an electrolysis module; an electrolysis module(4) manufacturing the sterilization and disinfection water including sodium hypochlorite; and a sterilization and disinfection water reservoir(2) supplying the sterilization and disinfection water to a non-processed water line.

Description

Electrolysis apparatus for water treatment

 The present invention relates to an electrolytic device for water treatment, and in detail, in the process of preparing sterilized water including sodium hypochlorite for water treatment by electrolysis, the sodium hypochlorite produced in the sterilized water storage tank so that scale does not occur without a softening device. The present invention relates to an electrolytic device for preparing sodium hypochlorite sterilized water of a predetermined concentration by circulating and supplying a portion of diluted sodium chloride solution with an electrolytic module by circulating and supplying a high velocity of water. Especially, a feeding device and a vegetable in a medium-large feeding facility or a restaurant Application process for disinfecting sterilizing water using well-known electrolytic methods such as disinfection of container washing, disinfection facilities for village water supply, disinfection of tanks such as swimming pools and bathrooms, disinfection of water tanks in large buildings and apartment complexes, and seawater electrolytic devices It relates to an electrolytic device for water treatment applicable to.

In general, disinfection methods used in the field are disinfected using hot water disinfection, ultraviolet disinfection and chemical disinfection.

However, the boiling water disinfection of the disinfection method has a problem that can be applied only to tableware because it uses the water,

In addition, UV disinfection is a problem that can be used for sterilization of foods, such as vegetables or fish, and the constraints that must be placed so that it is not sterilized by nesting or spilling the tableware, since only the part of the light is sterilized.

As one of the remaining chemical sterilization methods, to control microorganisms of tableware, vegetables and fruits, chlorine solution sterilization is performed by diluting high concentration chlorine solution with low concentration of 100 and 200 ppm chlorine water. Although antibacterial activity is recognized worldwide, it is very toxic, so if you use high concentration of chlorine solution for a long time, there is a problem that you need to go through several rinsing processes because of bad smell, deterioration of sensory quality and secondary contamination by residual chlorine. Problems have been reported in patients with headaches, stinging eyes, and neck or bronchial injuries. Therefore, the residual amount of chlorine in the disinfected sterilized water to be discharged must be used at a concentration that is harmless to workers.

FIG. 5 is a conceptual view illustrating a conventional water treatment electrolytic apparatus, and FIG. 6 illustrates a configuration of a chemical sterilization method among the above disinfection methods as a detailed detailed device configuration of FIG. 5.

 As shown in the figure, the treated water such as tap water or ground water is treated with a softener, etc., and then 2.5 to 3% of sodium chloride solution is produced from the treated water, which is continuously introduced into the electrolytic module. When applied to, it can be seen that 7,000 ~ 10,000ppm sodium hypochlorite is generated by electrolytic reaction, stored in sterilized water storage tank, and diluted with raw water if necessary.

The conventional technique described above is a method in which sodium chloride solution diluted with an electrolytic module is electrolyzed in a continuous flow method to prepare sodium hypochlorite sterilized water, and more specifically, in order to prepare sodium hypochlorite sterilized water using a conventional circulating flow method. See how to do it.

First, it is known in the Republic of Korea Patent Registration No. 10-0842423 'Method and apparatus for producing sterilized water using electrolysis'. This patent is an apparatus for producing residual chlorine such as hypochlorous acid by electrolysis method, and its purpose is to provide a method and apparatus for producing sterilization and disinfection which maintains a constant level of residual chlorine produced using internal transport. Internal conveyance is performed for the purpose of intermittent operation for concentration control without increasing the flow rate inside the electrolytic module.

However, the Republic of Korea Patent No. 10-0842423 is different from the technical solution to achieve the scale reduction by increasing the flow rate through the circulating flow path to reduce the generation of the scale in the electrolytic module in the electrolysis reaction as the present invention will be described later There is a face.

In addition, according to the 'electrolysis device equipped with a circulating flow path' of Korean Patent No. 10-0443715, electrolytic water generated by separating the alkaline water and the acidic water by using a diaphragm electrolytic module and using the alkaline water produced therein as washing water. The purpose of the present invention is to provide an electrolysis device capable of precisely adjusting the acidity of the battery to increase washing efficiency. The configuration of the present invention uses a diaphragm electrolytic module, the circulation passage is configured inside the electrolytic module, and the purpose of forming the circulation passage inside the electrolytic module is to adjust the pH of the electrolyzed water.

However, the Republic of Korea Patent No. 10-0443715 is a technical configuration that can minimize the generation of scale in the electrolytic cell in the production of sodium hypochlorite disinfectant water by electrolysis of dilute brine or seawater using a membrane-free electrolytic module as described later And it can be seen that the purpose of the use, the product using the electrolysis, the configuration of the electrolytic module, the formation of the circulation flow path is different.

In addition, the technology known by the Republic of Korea Patent Registration No. 10-0462639 'water treatment device' and 10-0768096 'water treatment device and method thereof' consists of two separate electrolytic modules in the water treatment method for the water tank such as a swimming pool. One electrolytic module is used for the purpose of circulating the water stored in the tank and directly electrolytically purifying. In another electrolytic module, the sterilized sterilized water is continuously produced by using a predetermined concentration of brine to concentrate the concentration of the sterilized water in the tank. Is a technology to purify the tank by putting a certain amount when the fall. In the present invention, the electrolytic module for circulating and electrolytically circulating water in a tank provides a method of directly electrolyzing the water of a target tank to purify or sterilize the water in the tank.

However, the Republic of Korea Patent Nos. 10-0462639 and 10-0768096 are different because they do not have the input method of sterilizing water through indirect electrolysis as the present invention will be described later. That is, the present invention is the electrolytic module for producing the sterilized sterilized water itself is a process for producing sterilized sterilized water of sodium hypochlorite as in the present invention, but the flow in the electrolytic module is to produce the sterilized sterilized water by the same continuous flow as the prior art It is technically different from this invention.

As described above, in the conventional general electrolytic method, a diluted sodium chloride solution is used by using treated water that has undergone a softening process through a water softener to remove scale-causing substances from inflow of treated water such as tap water, ground water or sea water. To prepare and use it to produce sodium hypochlorite through electrolysis.

However, the above-described conventional technology has a problem in that frequent washing with hydrochloric acid is required because the scale is attached to the surface of the cathode by a large amount of scale causing material contained in tap water, ground water or sea water.

An object of the present invention for solving the above problems is to provide an electrolytic device for water treatment that can reduce the generation of scale of the cathode which is the biggest problem in the production of sodium hypochlorite using the electrolysis method.

An object of the present invention is to reduce the generation of the scale of the negative electrode by increasing the flow rate through the formation of circulating flow path in the production of sodium hypochlorite sterilization water for water treatment by electrolysis of dilute brine or seawater using a membrane-free electrolytic module To provide a device.

The present invention to achieve the object as described above and to perform the problem to remove the conventional defects after branching some of the untreated water line flowing water, such as tap water or ground water after the sterilization of the sterilized water through the electrolytic module after sterilization In the electrolytic apparatus for water treatment to supply to the untreated water line through the disinfection water discharge line,

A dilute brine production apparatus for directly receiving branched water to prepare a dilute sodium chloride solution;

A circulating pump for supplying sterilized sterilized water mixed with diluted sodium chloride solution or diluted sodium chloride solution to the electrolytic module at a flow rate faster than that of the branched water;

An electrolytic module for producing sterilized sterilized water including sodium hypochlorite without generating scale by receiving sterilized sterilized water mixed with a diluted sodium chloride solution or a diluted sodium chloride solution supplied from a circulation pump;

It is achieved by providing an electrolytic device for water treatment, comprising a; sterilization sterilized water storage tank for storing the sterilized sterilized water produced in the electrolytic module and then supplying to the untreated water line.

The flow rate supplied by the circulation pump from the electrolytic module is characterized in that 0.1m / sec ~ 1m / sec.

The circulation pump is characterized in that it is installed on the circulating basin line for circulating the sterilization sterilization water storage tank through the sterilization sterilization water storage tank and the electrolytic module through a dilute brine manufacturing apparatus.

The circulation pump is installed between the rear end of the diluted brine production apparatus and the electrolytic module, and the electrolytic module is connected to a circulation basin line connected between the influent branch line and the sterilization water storage tank passing the diluted water production apparatus, On one side of the sterilization water storage tank, a disinfection water basin supply pump for supplying some sterilization water is installed, and on the other side of the circulation basin line, a valve for supplying most of the sterilization water to the influent basin line is installed and recirculated. .

The circulation pump is installed between the rear end of the diluted brine manufacturing apparatus and the electrolytic module, the electrolytic module is configured to be connected to the sterilization sterilization water storage tank, the sterilization sterilization water storage tank is connected to a circulating pump connected to a part of the sterilization sterilization water introduced inlet water basin line And a valve installed on the circulation branch line to flow only toward the circulation pump.

The dilute brine manufacturing apparatus includes two influent storage tanks for storing water such as tap water or groundwater, and the water contained in one inflow storage tank passes through a saturated salt storage tank filled with saturated salt by a first pump, and another inflow water The water contained in the reservoir is directly supplied to the second pump, characterized in that configured to produce a diluted sodium chloride solution at the confluence point.

The dilute brine manufacturing apparatus is characterized in that the device to store the sodium chloride solution diluted in 2.5 ~ 3% sodium chloride solution by supplying water such as tap water or ground water to the container in which sodium chloride is stored.

The diluted sodium chloride solution is characterized in that the solution diluted to 2.5 ~ 3%.

The present invention has the advantage that the configuration of the device can be simplified, and the manufacturing cost can be reduced by eliminating the training process in the production of sodium hypochlorite sterilization water using the electrolysis method. In other words, in order to solve the problem of scale in preparing and directly diluting the sodium chloride solution with the treated water which has not undergone the separate water treatment process, it is operated by circulating the sterilized water generated in the storage tank in the electrolytic module. Increasing the flow rate at, can achieve the same level of anti-scaling effect as water softeners,

In addition, the present invention simplifies the configuration of the device by omitting the training process in the prior art, and can reduce the production cost, as well as by eliminating the regeneration process required when using the water softener and increasing the electrode cleaning cycle of seawater electrolysis. Benefits include reduced use, streamlined processes, reduced operating costs, ease of operation, and increased durability of the device.

In addition, the present invention is particularly preferably applied to small and medium-sized electrolytic system capable of producing sodium hypochlorite of less than 5kg-Cl ₂ / day, the smaller the device, the smaller the electrolytic module, the flow rate of the diluted sodium chloride solution supplied to the electrolytic module The temperature rise of the electrolytic module is greatly increased due to the very low electric current, and the resulting amount of sodium hypochlorite is lowered, resulting in a decrease in current efficiency, whereas the generation of by-products due to high temperature is concerned. The treatment water supplied to the electrolytic module is circulated at a high flow rate (preferably between 0.1 m / sec and 1 m / sec in the electrolytic module) to generate sterilized water and some diluted sodium chloride solution stored in the reservoir. So, sodium hypochlorite can be produced within 10 ℃ of temperature rise in front and rear ends, improving current efficiency. It is a useful invention having the advantage of being able to suppress the generation of oligo-products as much as possible, the invention is expected to be greatly used in the industry.

Hereinafter, the configuration and the operation of the embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

1 is a conceptual view showing a process apparatus configuration according to an embodiment of the present invention, Figure 2 is a detailed detailed device configuration of FIG.

As shown, the configuration of the present invention has a configuration in which a portion of the untreated water line 21 through which tap water or ground water flows, is supplied after supplying the disinfected water to the untreated water line 21 after manufacturing, to supply the treated water to the place of use. . To this end, tap water or groundwater is supplied through the influent branch line 22 branched from one branch of the untreated water line 21.

The supplied tap water or ground water can be sterilized and disinfected water storage tank through a diluted brine manufacturing device (1), which initially prepares the sodium chloride solution diluted 2.5 to 3% of water such as tap water or ground water without any additional softening device. Flows into.

As shown in FIG. 2, the dilute brine manufacturing apparatus 1 includes two inflow water storage tanks 101 and 102 for storing water such as tap water or ground water, and the water contained in one inflow water storage tank 101 is first. Passed through the saturated salt storage tank 103 filled with saturated salt by the pump 104, the water contained in another influent storage tank 102 is directly supplied to the second pump 105, the concentration at the confluence point is 2.5 ~ It is set up to produce a sodium chloride solution diluted to 3%.

If the incoming water is used as seawater, a separate diluted sodium chloride production unit may be omitted.

In another embodiment, the dilute brine manufacturing apparatus 1 supplies water, such as tap water or groundwater, to a container in which sodium chloride is stored (not shown), thereby making a sodium chloride solution diluted with 2.5 to 3% sodium chloride solution. It can also be configured as. Such means are useful where small quantities are used.

When the diluted sodium chloride solution prepared as described above is introduced into the sterilization water storage tank 2 and reaches a constant level, the circulation is installed on the circulation branch line 24 for circulating between the sterilization water storage tank 2 and the electrolytic module 4. The pump 3 is operated and the diluted sodium chloride solution stored in the sterilization water storage tank 2 is circulated to the electrolytic module 4. At this time, the DC power is supplied to the electrolytic module 4 so that the sodium chloride solution is converted to sodium hypochlorite through electrolysis.

At this time, the electrolyte solution circulated from the sterilization water storage tank 2 to the electrolytic module 4 is circulated at a flow rate faster than the flow rate flowing into the sterilization water storage tank 2. In the conventional electrolytic devices, there is no mention of a specific flow rate, but the flow rate between the electrodes of the electrolytic module is usually supplied at 0.5 cm / sec or less. However, in the present invention, the flow rate flowing between the electrodes of the electrolytic module is configured to be supplied and circulated so as to be 0.1 m / sec to 1 m / sec. Thus, the reason for supplying the numerical flow rate is smaller than 0.1 m / sec. This is because when this occurs, the current generation efficiency due to the electrode reaction is lowered when it is larger than 1 m / sec, so that the amount of sodium hypochlorite is reduced. Therefore, when the flow rate of the numerical range range defined in the present invention is satisfied, scale does not occur between electrodes even without a water softener as desired in the present invention.

The circulating flow of the electrolytic device of the present invention is maintained until the level of the sterilization water storage tank 2 reaches a certain upper limit level so that the diluted sodium chloride solution flowing into the sterilization water storage tank 2 is no longer introduced. Sodium hypochlorite sterilization water is generated in a disinfectant reservoir to a certain upper limit level.

At this time, the sodium hypochlorite sterilization water produced is preferably 7,000 to 8,500 ppm sodium hypochlorite when using the prepared brine, and 1,000 to 2,500 ppm sodium hypochlorite for the seawater, but in the present invention, Is configured to be controlled in the range of concentration to be controlled and does not limit a certain concentration range.

After sterilizing disinfection water in the sterilization water storage tank (2) in which sodium hypochlorite is stored through the feed pump (6) installed on the sterilization water discharging line (23), the sterilization water stored in the sterilization water storage tank (2) untreated water line ( 21) If the sterilization water is consumed below the upper limit level of the sterilization water storage tank after dilution with the raw water flowing, 2.5 to 3% of the diluted sodium chloride solution is added to the sterilization water storage tank (2). It will flow at a constant flow rate. At this time, the circulation pump 3 is restarted and DC power is supplied to the electrolytic module 4 to reproduce the diluted sodium hypochlorite in the sterilization water storage tank 2 at a set concentration. A dilute sodium chloride solution is introduced and continues until the upper level of the sterilization tank is reached. At this time, the flow rate of the solution of the incoming sodium chloride and the flow rate of the circulating water circulated to the electrolytic module are the same as the method of generating the sterilized sterilized water in the initial sterilized sterilized water storage tank.

In addition, in the method of producing the sterilized sterilized water, in the embodiment of the present invention, each of the diluted sodium chloride solution flowing into the sterilized sterilized water storage tank and the flow of the circulating water circulated to the electrolytic cell have a certain time of rest during operation. By setting the intermittent operation method, it is possible to reduce the hatching of the equipment and operate by maintaining the sodium hypochlorite in the set concentration range in the sterilization water storage tank.

In addition, although not described, it is natural that an upper pipe of the sterilization water storage tank 2 is installed to prevent explosion due to hydrogen generation.

3 is a conceptual view showing a process apparatus configuration according to another embodiment of the present invention, after branching some of the untreated water line 21 through which tap water or ground water flows, as shown in FIG. ) So that the treated water is supplied to the place of use. To this end, tap water or groundwater is supplied through the influent branch line 22 at one point of the untreated water line 21.

 Specifically, a sodium chloride solution of 2.5 to 3% is prepared by diluting brine manufacturing apparatus 1 by diluting brine without initial water treatment through the influent branch line 22, and the diluted sodium chloride solution is The circulation pump 3 circulates at a flow rate of 0.1 m / sec to 1 m / sec in the electrolytic module 4 to perform an electrolytic reaction to produce sodium hypochlorite, a disinfectant, in a sodium chloride solution.

Since some of the sterilized sterilization water including sodium hypochlorite generated through the electrolytic module (4) is between the influent branch line 22 and the sterilized sterilization water storage tank (2) passing through the electrolytic module (4) and the dilution water production apparatus (1). It is supplied to and stored in the sterilization water storage tank (2) through the disinfection water basin supply pump (7) installed on one side of the circulating basin line 24 connected to the sterilization water storage tank (2), and most of the remaining sterilization water flows in one direction. Through (5) it is recirculated toward the inlet water basin line 22 to flow back into the electrolytic module (4). At this time, the sodium chloride solution diluted 2.5 to 3% is supplemented with circulating disinfectant water. The amount to be replenished is replenished to the electrolytic module 4 by adding up and replenishing as much as the amount lost and introduced into the sterilization water storage tank as described above.

This flow is continued until the disinfectant sterilization water reaches the upper limit level of the sterilization water storage tank as shown in FIG. 1 above, and if sterilization water is used as needed in the sterilization water storage tank 2, the sterilization disinfection by the above method The water is reproduced and continuously generated and stored up to the upper limit level of the sterilizing water storage tank 2.

That is, the disinfectant water stored in the sterilization water storage tank 2 through the feed pump 6 installed on the sterilization water discharging line 23 as needed in the sterilization water storage tank 2 in which sodium hypochlorite is stored. It is configured to dilute (21) with flowing raw water so that use is possible.

If seawater is used as the water to be treated, the diluted brine production apparatus is omitted, and the seawater is subjected to the electrolytic reaction by the above-described method in place of the diluted sodium chloride solution.

In addition, although not described, it is obvious that the upper part of the sterilization water storage tank 2 is provided with a drainage pipe for hydrogen separation to prevent explosion due to hydrogen generation.

4 is a conceptual view illustrating a process apparatus according to another embodiment of the present invention. After branching some of the untreated water lines 21 through which tap water or ground water flows, as shown in FIG. 21) so that the treated water is supplied to the place of use. To this end, tap water or ground water is supplied through the influent branch line 22 at one point of the untreated water line 21.

Specifically, a sodium chloride solution prepared by diluting 2.5 to 3% of the untreated water without a softening process by the dilute brine manufacturing apparatus 1 is prepared and the diluted sodium chloride solution is passed through an electrolytic module (4) through a circulation pump (3). After being prepared as sterilized sterilized water is introduced into the sterilized sterilized water storage tank (2).

When the incoming sterilization water reaches a predetermined level, a valve 5 installed on the circulation branch line 24 configured to connect the sterilization water storage tank 2 to the circulation pump 3 is configured to flow the fluid in one direction. It is combined with the dilute sodium chloride solution introduced into the open circuit and circulated to the electrolytic module (4), and is produced while recycling the sterilized water including sodium hypochlorite through the electrolytic reaction. At this time, as described above, the electrolysis module 4 is supplied at a flow rate of 0.1 m / sec to 1 m / sec to perform an electrolytic reaction.

Sterilization water generated by the electrolytic reaction is continuously operated until the upper limit level is reached in the sterilization water storage tank 2.

In addition, if the sterilized sterilized water is used as needed in the sterilized sterilized water storage tank (2), the upper limit level of the sterilized sterilized water storage tank (2) is lowered. At this time, the diluted aqueous sodium chloride solution flows into the electrolytic module (4) from the sterilized sterilized water storage tank (2). The valve 5 is opened and the circulation pump 3 is operated so that the diluted sodium hypochlorite is circulated to the electrolytic module 4, and at this time, the sodium hypochlorite sterilization water is set as the DC power is supplied to the electrolytic module 4. Will be reproduced in concentration.

Similarly, disinfectant sterilized water stored in the sterilized sterilized water storage tank 2 in which sodium hypochlorite is stored through the feed pump 6 installed on the sterilized sterilized water discharge line 23 as needed. 21) Dilute with running water to make use.

This method provides an intermittent operation method in the same manner as the configuration of the invention of FIG. 3 described above.

In addition, when seawater is used as the water to be treated, the dilute brine manufacturing apparatus is omitted, and the seawater performs electrolytic reaction by the above-described method in place of the diluted sodium chloride solution.

The dilute brine manufacturing apparatus for the method for preparing a sodium chloride solution diluted to 2.5 to 3% is a method for preparing a diluted sodium chloride prepared by mixing a saturated salt of salt and water at a constant ratio and a predetermined amount of sterilized water storage tank in 2.5. It includes all methods of preparing and adding ˜3% diluted sodium chloride solution in advance.

Although not shown in FIGS. 1 to 4, each pump and the rotation amount and the opening and closing of the valve are configured to be controlled by a controller connected to and controlling them.

In addition, although not described, it is natural that the exhaust pipe for hydrogen separation is installed on the upper side of the sterilization water storage tank 2 to prevent explosion due to hydrogen generation.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

1 is a conceptual diagram showing a process apparatus configuration according to an embodiment of the present invention,

2 is a detailed detailed device configuration diagram of FIG.

3 is a conceptual view showing a process apparatus configuration according to another embodiment of the present invention,

4 is a conceptual diagram showing a process apparatus configuration according to another embodiment of the present invention,

5 is a conceptual view showing a conventional general water treatment electrolytic apparatus,

6 is a detailed detailed block diagram of FIG. 5.

<Description of the symbols for the main parts of the drawings>

(1) dilution brine production equipment (2) sterilization water storage tank

(3): circulation pump (4): electrolytic module

(5): valve (6): feed pump

(7): Pump for disinfecting water basin supply (21): Untreated water line

(22): Influent water basin line (23): Sterilized water discharge line

(24): circulation basin line (101, 102): influent reservoir

(103): saturated salt storage tank (104): first pump

105: second pump

Claims (8)

delete delete In the electrolytic apparatus for water treatment in which a part of untreated water line through which water such as tap water or ground water flows is manufactured, and then sterilized water is produced through an electrolytic module, and then supplied to the untreated water line through a sterilized water discharge line. A dilute brine manufacturing apparatus for directly receiving branched water to prepare a sodium chloride solution diluted to 2.5 to 3%; A circulation pump for supplying the sterilized sterilized water mixed with the diluted sodium chloride solution or the diluted sodium chloride solution to the electrolytic module at a flow rate of 0.1 m / sec to 1 m / sec faster than the supply flow rate of the branched water; An electrolytic module for producing sterilized sterilized water including sodium hypochlorite without generating scale by receiving sterilized sterilized water mixed with a diluted sodium chloride solution or a diluted sodium chloride solution supplied from a circulation pump; Including sterilization sterilization water storage tank for storing the sterilization water produced by the electrolytic module and supplying it to the untreated water line; The circulation pump is electrolytic device for water treatment, characterized in that installed on the circulating basin line for circulating the sterilized sterilized water storage tank through the sterilized sterilized water storage tank and the electrolytic module through a dilute brine manufacturing apparatus. In the electrolytic apparatus for water treatment in which a part of untreated water line through which water such as tap water or ground water flows is manufactured, and then sterilized water is produced through an electrolytic module, and then supplied to the untreated water line through a sterilized water discharge line. A dilute brine manufacturing apparatus for directly receiving branched water to prepare a sodium chloride solution diluted to 2.5 to 3%; A circulation pump for supplying the sterilized sterilized water mixed with the diluted sodium chloride solution or the diluted sodium chloride solution to the electrolytic module at a flow rate of 0.1 m / sec to 1 m / sec faster than the supply flow rate of the branched water; An electrolytic module for producing sterilized sterilized water including sodium hypochlorite without generating scale by receiving sterilized sterilized water mixed with a diluted sodium chloride solution or a diluted sodium chloride solution supplied from a circulation pump; Including sterilization sterilization water storage tank for storing the sterilization water produced by the electrolytic module and supplying it to the untreated water line; The circulation pump is installed between the rear end of the diluted brine production apparatus and the electrolytic module, and the electrolytic module is connected to a circulation basin line connected between the influent branch line and the sterilization water storage tank passing the diluted water production apparatus, The disinfectant water storage tank side is provided with a disinfection water basin supply pump for supplying some sterilization water, and a valve for supplying most of the sterilization water to the inlet water basin line is installed on the other side of the circulation basin line. Electrolytic device for water treatment. In the electrolytic apparatus for water treatment in which a part of untreated water line through which water such as tap water or ground water flows is manufactured, and then sterilized water is produced through an electrolytic module, and then supplied to the untreated water line through a sterilized water discharge line. A dilute brine manufacturing apparatus for directly receiving branched water to prepare a sodium chloride solution diluted to 2.5 to 3%; A circulation pump for supplying the sterilized sterilized water mixed with the diluted sodium chloride solution or the diluted sodium chloride solution to the electrolytic module at a flow rate of 0.1 m / sec to 1 m / sec faster than the supply flow rate of the branched water; An electrolytic module for producing sterilized sterilized water including sodium hypochlorite without generating scale by receiving sterilized sterilized water mixed with a diluted sodium chloride solution or a diluted sodium chloride solution supplied from a circulation pump; Including sterilization sterilization water storage tank for storing the sterilization water produced by the electrolytic module and supplying it to the untreated water line; The circulation pump is installed between the rear end of the diluted brine manufacturing apparatus and the electrolytic module, the electrolytic module is configured to be connected to the sterilization sterilization water storage tank, the sterilization sterilization water storage tank is connected to a circulating pump connected to a part of the sterilization sterilization water introduced inlet water basin line An electrolytic apparatus for water treatment comprising a circulation branch line and a valve installed on the circulation branch line to flow only toward the circulation pump. The method according to any one of claims 3 to 5, The dilute brine manufacturing apparatus includes two influent storage tanks for storing water such as tap water or groundwater, and the water contained in one inflow storage tank passes through a saturated salt storage tank filled with saturated salt by a first pump, and another inflow water The water contained in the reservoir is directly supplied to the second pump, the electrolytic apparatus for water treatment, characterized in that configured to produce a diluted sodium chloride solution at the joining point. The method according to any one of claims 3 to 5, The dilution brine manufacturing apparatus is a device for supplying water, such as tap water or ground water to the container in which sodium chloride is stored to make a sodium chloride solution diluted in 2.5 ~ 3% sodium chloride solution and stored. delete

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