KR20140017697A - Water treatment method - Google Patents

Abstract

The present invention provides a water treatment method for minimizing the waste of water and improving sterilization efficiency for sterilizing the inside of a water tank. The water treatment method of the present invention comprises the following: a) a step for allowing sterilizing water generated from a sterilization module to flow into a storage unit; and b) a step for draining the sterilizing water inside the storage unit to the outside. The storage unit comprises a first storage tank and a second storage tank storing water filtered by a filter unit at different temperatures. The a) step is performed by operating the sterilization module while the inflow of water to the inside of the first storage tank or the outflow of water to the outside of the first storage tank is prevented. [Reference numerals] (AA) Water supply

Description

{WATER TREATMENT METHOD}

The present invention relates to a water treatment method, and more particularly, to a water treatment method capable of sterilizing a water tank and an inside of a pipe using sterile water.

As water pollution due to industrial development becomes serious, distrust in tap water increases, and recently, purified water with a water purifier is used as drinking water or commercially available bottled water as drinking water.

The water purifier is made to remove heavy metals and other harmful substances contained in the raw water through the process of sedimentation, filtration, sterilization, and adsorption of raw water such as tap water, and the like. It is also widely used for cleaning or medical use of high precision electronic components.

The conventional water purifier includes a raw water valve for controlling the supply of raw water such as tap water and natural water, a pretreatment sedimentation filter for filtering the debris in the raw water that has passed through the raw water valve, A post-carbon filter for removing chlorine components and odors contained in purified water passing through the pre-carbon filter, and a hollow fiber filter for removing bacteria and other fine particles contained in purified water passing through the post- And a water tank for storing the purified water passing through the hollow fiber membrane filter.

An osmosis membrane filter may be used to remove the ionic heavy metal remaining in the raw water instead of the hollow fiber membrane filter. In this case, the osmosis membrane filter may be used to pass the raw water to a predetermined pressure and the reverse osmosis membrane filter A wastewater regulator may be further provided to regulate the purification ratio of the raw water to the wastewater and to discharge the wastewater.

In general, in a water treatment plant, a chlorine-based disinfecting disinfectant is administered to suppress the growth of microorganisms in the water. While the tap water to which the disinfecting disinfectant is administered passes through the water purifier, a part of chlorine is removed from the free carbon filter and the post- When a membrane filter is used, ionic chlorine components are removed and stored in a water tank.

Since the chlorine component that suppresses the growth of microorganisms is removed by the filter, the purified water stored in the water tank is not used immediately by the consumer, and bacteria proliferate inside the water tank after a long time elapses Various methods have been proposed for the sterilization of these water tanks.

For example, Korean Patent Registration No. 10-621937 discloses a technique for sterilizing the interior of an aqueous tank by providing an electrolytic sterilizing means between the filter portion and the purified water tank to sterilize the purified water by electrolysis and produce an oxidizing mixed material. According to this construction, electrolytic sterilizing means is provided at the inlet side of the purified water tank for entering the purified water. In order to sterilize the inside of the purified water tank, the water of the purified water tank is discharged to the outside and then sterilized water is generated and introduced into the purified water tank In addition, when the reverse osmosis membrane filter is provided in the filter unit, the amount of purified water in the raw water obtained by the reverse osmosis membrane filter and the amount of waste water discharged into the waste water Water ratio becomes 8: 2, which causes a problem of wasting water.

In addition, since the dissolved ionic material contained in the raw water is removed while passing through the filter portion, a sufficient amount of sterilizing material may not be generated during the passage through the electrolytic sterilizing means, resulting in a problem that the sterilizing efficiency is inferior.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a water treatment method capable of minimizing waste of water and improving sterilization efficiency.

According to an aspect of the present invention, there is provided a water treatment method comprising the steps of: a) introducing sterilization water generated in a sterilization module into a storage section; b) discharging sterilized water inside the storage unit to the outside, wherein the storage unit includes a first storage tank and a second storage tank for storing the filtered water at different temperatures, In the step a), the sterilization module is operated in a state in which water is prevented from flowing into the first storage tank or from flowing out of the first storage tank.

The first storage tank and the second storage tank may be interconnected by a connection line, and the sterilizing module may be provided on the connection line.

A connection line shutoff valve is provided on the connection line between the sterilization module and the second storage tank; The connection between the first storage tank and the second storage tank may be blocked by the connection line shutoff valve in step a).

Wherein the step a) includes: draining the water of the second storage tank to the outside in a state where the water of the first storage tank is blocked by the connection line shutoff valve from flowing into the second storage tank; Introducing sterilization water generated by operation of the sterilization module into the first storage tank; And turning on the connection line shutoff valve to cause sterilization of the first storage tank to flow into the second storage tank through the connection line.

Wherein the step a) comprises: draining the water of the first storage tank and the second storage tank to the outside; Wherein the wastewater discharged from the reverse osmosis membrane filter of the filter unit is supplied to the inside of the first storage tank in a state where the connection between the first storage tank and the second storage tank is blocked by the connection line shutoff valve provided on the connection line. An incoming step; Introducing sterilization water generated by operation of the sterilization module into the first storage tank; And turning on the connection line shutoff valve to cause sterilization of the first storage tank to flow into the second storage tank through the connection line.

According to the present invention, the sterilizing module is installed on the outlet side of the water in the storage tank and the sterilizing water generated in the sterilizing module is introduced into the storage tank, so that water in the storage tank need not be drained to the outside Sterilized water can be generated using the water in the storage tank, thereby minimizing the waste of water and shortening the time required for sterilization.

In addition, by circulating the water in the storage tank during sterilization water generation, sterilization efficiency can be improved by making the concentration of sterilization material uniform.

In addition, waste water generated from the reverse osmosis membrane filter can be used to generate sterilized water, thereby minimizing the waste of water and improving the sterilization efficiency by using a dissolved ionic substance contained in the wastewater to produce a high concentration of sterilizing material .

In addition, the drainage line for draining sterilization water is branched right before the intake valve installed on the intake line for supplying purified water to the user and drained to the outside. The area of the dead zone that is not sterilized can be minimized.

1 is a view showing a configuration of a water treatment apparatus according to a first embodiment of the present invention,
2 is a view showing an operation state of hot water draining in the water treatment apparatus according to the first embodiment of the present invention,
3 is a view showing a sterilizing water generating process in the water treatment apparatus according to the first embodiment of the present invention,
4 is a view showing a sterilization water draining process in the water treatment apparatus according to the first embodiment of the present invention;
5 is a view showing an operating state when rinsing in the water treatment apparatus according to the first embodiment of the present invention,
6 is a view showing an operating state when rinsing water drainage in the water treatment apparatus according to the first embodiment of the present invention,
7 is a view showing an operating state when the purified water inflow in the water treatment apparatus according to the first embodiment of the present invention,
8 is a view showing the configuration of a water treatment apparatus according to a second embodiment of the present invention;
9 is a view showing a configuration of a water treatment apparatus according to a third embodiment of the present invention,
10 is a view showing an operation state at the time of drainage in the water treatment apparatus according to the third embodiment of the present invention,
11 is a view showing the inflow process of wastewater in the water treatment apparatus according to the third embodiment of the present invention,
12 is a view illustrating a sterilizing water generating process in a water treatment apparatus according to a third embodiment of the present invention;
FIG. 13 is a view showing a sterilized water drainage process in the water treatment apparatus according to the third embodiment of the present invention,
FIG. 14 is a view illustrating the inflow of rinse water in the water treatment apparatus according to the third embodiment of the present invention; FIG.
15 is a view showing a configuration of a water treatment apparatus according to a fourth embodiment of the present invention,
16 is a view showing a configuration of a water treatment apparatus according to a fifth embodiment of the present invention,
17 is a view showing a configuration of a water treatment apparatus according to a sixth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

≪ Embodiment 1 >

1 is a view showing the configuration of a water treatment apparatus according to a first embodiment of the present invention.

The water treatment apparatus according to the first embodiment of the present invention includes a filter unit 100 composed of a plurality of filters 110, 120, 130 and 140 for filtering raw water, a storage unit 200 for storing the filtered water in the filter unit 100, A sterilizing module 300 for supplying sterilizing water to the storage 200, a water intake 400 for taking water stored in the storage 200 to the user, And a drainage unit 500 for draining sterilized water to the outside.

The filter unit 100 includes a pretreatment sedimentation filter 110 for filtering debris in raw water, a pre-carbon filter 120 for removing chlorine components and odors in raw water, A post-carbon filter 130 for removing chlorine components and odors contained in the raw water, and a hollow fiber membrane filter 140 for removing bacteria and other particulates contained in the purified water passing through the post-carbon filter 130 . In this case, the order of the post-carbon filter 130 and the hollow fiber membrane filter 140 may be reversed. In the above description, the hollow fiber membrane filter 140 is provided, but the reverse osmosis membrane filter may be provided instead of the hollow fiber membrane filter 140.

A plurality of pipes 601, 602 and 603 are connected to each of the filters 110, 120, 130 and 140 to form a purified water movement line through which purified water moves, and a pre- A raw water valve 150 may be provided on the pipe 601 for controlling the inflow of raw water.

The raw water valve 150 may be installed at the inlet side of the pretreatment sedimentation filter 110, but since the raw water contains a large amount of foreign substances, when the raw water flows directly into the raw water valve 150, the durability of the raw water valve 150 may be reduced. Since it may fall, it is preferable to pass the raw water valve 150 after the first filtering the foreign matter contained in the raw water in the pre-treatment settling filter 110.

The storage unit 200 stores the filtered water in the filter unit 100 and is connected to the hollow fiber membrane filter 140 by a purified water supply line 604 to store cold water and purified water. A storage tank 210 and a second storage tank 220 connected to the first storage tank 210 by a connection line 621 to store hot water.

The first storage tank 210 has a water level sensor 211 for sensing the water level inside the tank to control the supply of water introduced into the tank, the water introduced into the tank when the water level sensor 211 is malfunctioning Ball tower 212 for blocking the separation plate 213, the separation plate 213 for separating the internal space of the tank into the upper space 210a, where the purified water at room temperature is stored and the lower space 210b, the cold water is stored. Extending downward from the center of the lower space 210b to be connected to the second storage tank 220 to supply the purified water to the second storage tank 220 without being mixed with cold water. A connection passage 214 is provided.

When the water level sensor 211 senses that the water level in the first storage tank 210 is a high water level, the raw water valve 150 is turned off to cut off the supply of raw water. When the sensor 211 malfunctions, the inlet port through which water flows into the first storage tank 210 at a higher level than the level sensor 211 is mechanically blocked.

In the present embodiment, it is assumed that both the water level sensor 211 and the ball top 212 are provided, but only the water level sensor 211 or the ball top 212 is provided to control the water level inside the first storage tank 210. It can also be configured as.

One end of the connection line 621 is connected to the first storage tank 210 to be connected to the connection flow path 214, the other end is connected to the second storage tank 220, the filter unit 100 The purified water supplied through is supplied to the second storage tank 220 through the connection line 621 as well as the first storage tank 210.

A cooling coil (not shown) for cooling purified water stored in the lower space 210b is provided on the outer circumference of the lower space 210b. A heater for heating the purified water stored in the outer circumference of the second storage tank 220 Not shown). Of course, the cooling coil and the heater may be provided in the lower space 210b of the first storage tank 210 and the second storage tank 220.

The sterilization module 300, for example, electrolyzes water to react chlorine ions contained in the raw water with hydrogen, oxygen, and the like to generate germicidal materials such as HOCl and ClO ^- ions. And a negative electrode (not shown). The positive and negative electrodes may be supplied with power by a power supply unit (not shown). The electrodes may be coated with platinum or iridium.

The sterilization module 300 is installed on the connection line 621 which is the outlet side of the water in the first storage tank 210. When the sterilization module 300 is operated, The electrolytic sterilizing material flows into the upper space 210a of the first storage tank 210 and the sterilizing module 300 is operated for a predetermined period of time, do.

If the sterilization module 300 is installed on the purified water supply line 604, which is the inlet side of the first storage tank 210, the water in the first storage tank 210 is used to sterilize the sterilization water The water in the first storage tank 210 is drained to the outside and the water supplied through the purified water supply line 604 is used to generate the sterilized water. As a result, water is wasted and time for sterilization It takes a lot.

Therefore, if the sterilization module 300 is installed on the connection line 621, which is the outlet side of the water in the first storage tank 210, the sterilization module 300 generates water using the water in the first storage tank 210 It is not necessary to drain the water inside the first storage tank 210 for sterilization, so that waste of water can be prevented and time required for sterilization can be shortened.

The water in the first storage tank 210 is prevented from flowing into the second storage tank 220 in the sterilization mode on the connection line 621 connecting the sterilization module 300 and the second storage tank 220, A connection line shutoff valve 350 is provided.

The water stored in the first storage tank 210 and the second storage tank 220 is supplied to the user through the water intake unit 400. The water intake unit 400 includes a first water intake valve 410 installed on a first water intake line 631 connected to the lower space 210b of the first storage tank 210 to regulate the supply of cold water, A second water intake valve 420 installed on a second water intake line 632 connected to the first and second storage tanks 220 and regulating the supply of hot water and water intake ports 450a and 450b for supplying the cold water and hot water to the user, .

The drainage unit 500 drains the sterilized water filled in the first storage tank 210 and the second storage tank 220 to the outside and discharges the sterilized water in the first storage tank 210 to the outside A first drain line 641 branched from the first water intake line 631 to drain water into the second storage tank 220, a second drain line 642 for draining sterilized water inside the second storage tank 220 to the outside, Two drain valves 510 and 520 for controlling the sterilization water drained through the first drain line 641 and the second drain line 642 and a drain pump 530 for smooth drainage of sterilized water. Although the configuration for draining sterilized water has been described above, draining of purified water and rinse water is also performed by the same configuration.

The first water intake line 631 located at the front end of the first water intake valve 410 is filled with water, In the present invention, the first drain line 641 is branched on the first water intake line 631 immediately before the first water intake valve 410 to sterilize the inside of the first water intake line 631 using sterilized water drained can do.

The drainage of the sterilized water through the drainage lines 641 and 642 may be natural drainage using the head difference or the drainage pump 530 may be installed as in the present embodiment to drain the sterilized water more smoothly, .

The drain pump 530 is a voltage / current is changed according to the change in the amount of water passing through the inside, that is, the load, load variation detection unit for detecting the change in the voltage / current (not shown) It can be configured to determine whether the drainage of purified or sterilized water is completed.

The sterilization mode according to the first embodiment of the present invention is performed in the order of hot water discharge → sterilization water generation → sterilization water discharge → rinse water inflow → rinse water discharge → water inflow order. The bactericidal action of the water treatment apparatus according to the embodiment will be described.

3 is a view showing a process of generating sterilizing water in the water treatment apparatus according to the first embodiment of the present invention, and FIG. 4 is a view showing the sterilizing water generating process in the water treatment apparatus according to the first embodiment of the present invention. FIG. 2 is a view showing an operation state at the time of hot water drainage in the water treatment apparatus according to the first embodiment of the present invention. FIG. 5 is a view showing an operation state at the time of rinsing in the water treatment apparatus according to the first embodiment of the present invention, FIG. 6 is a view showing the operation state of the water treatment apparatus according to the first embodiment of the present invention, FIG. 7 is a view showing an operation state at the time of inflow of purified water in the water treatment apparatus according to the first embodiment of the present invention. FIG. 7 is a view showing an operation state when the rinse water is drained in the water treatment apparatus according to the embodiment.

 2, the raw water valve 150, the sterilization module 300, the connection line shutoff valve 350 and the first drain valve 510 are in an off state, When the drain pump 530 is operated in the On state, the drain valve 520 is opened to prevent the water in the first storage tank 210 from flowing into the second storage tank 220, 220) are all drained. When the drainage is completed, both the second drain valve 520 and the drain pump 530 are turned off.

Here, Off refers to a state in which the valves 150, 350, 510 and 520 are closed, or the sterilizing module 300 and the drain pump 530 are not operated. On means that the valves 150, 350, 510 and 520 are open, (300) and the drain pump (530) are operated, and other embodiments described later have the same meaning.

In this case, whether or not all the water in the second storage tank 220 has been drained can be detected by detecting the voltage / current variation in the load variation sensing unit, receiving the sensed signal, and switching to the next step.

As shown in FIG. 3, all the valves 150, 350, 510 and 520 are turned off to form a closed space in the first storage tank 210, and then the sterilizing module The water in the closed space of the first storage tank 210 including the connection flow path 214 is electrolyzed to generate hypochlorous acid (HClO), hypochlorous acid ion (OCl-), chlorine (Cl ₂ And then flows into the upper space 210a through the connection passage 214 and the sterilizing material is diffused into the lower space 210b connected with the upper space 210a to be supplied to the first storage tank 210. [ The inside is filled with sterilized water, and the sterilization operation is performed for a predetermined time with the sterilized water filled.

As described above, according to the present invention, since water in the first storage tank 210 is drained and only water in the second storage tank 220 is drained, water in the first storage tank 210 is used to generate sterile water, It is possible to shorten the time required for the water supply and to prevent water waste.

When the sterilization of the inside of the first storage tank 210 is completed as described above, the process of discharging sterilized water proceeds. As shown in FIG. 4, before the sterilized water is discharged to the outside, the connection line shutoff valve 350 is turned on The sterilized water in the first storage tank 210 is filled into the second storage tank 220 to sterilize the inside of the connection line 621 and the inside of the second storage tank 220. In this case, only the sterilizing water in the upper space 210a of the first storage tank 210 is filled in the second storage tank 220, and the sterilizing water in the lower space 210b does not flow into the second storage tank 220 and remains as it is. Will be.

Meanwhile, the sterilization module 300 is turned off immediately before waiting for a predetermined time after the sterilization water is filled in the first storage tank 210 or just before draining the sterilization water in the first storage tank 210. The first storage tank 210 may be modified to another time point if it is determined that the inside of the first storage tank 210 is sufficiently sterilized.

When the sterilizing water in the first storage tank 210 is filled in the second storage tank 220, the first drain valve 510 and the second drain after waiting for a predetermined time to perform the sterilization action in the second storage tank 220. By turning on the drain valve 520 and operating the drain pump 530, the sterilizing water in the lower space 210b of the first storage tank 210 and the sterilizing water in the second storage tank 220 are moved to the outside. Drain .

In this case, even the inside of the first water intake line 631 can be sterilized in the course of discharging the sterilized water in the lower space 210b of the first storage tank 210, so that the dead zone area which is not sterilized can be reduced .

As shown in FIG. 5, when the sterilization module 300 and the first drain valve 510 and the second drain valve 520 are turned off, The raw water valve 150 and the connection line shutoff valve 350 are turned on so that the raw water is filtered through the filter unit 100 and the filtered water (hereinafter, referred to as rinsing water) 604 into the first storage tank 210 and the second storage tank 220.

6, the raw water valve 150 and the sterilization module 300 are connected to each other through the first and second storage tanks 210 and 220, respectively. The first and second storage tanks 210 and 220 are filled with rinsing water, The connection line shutoff valve 350 and the first drain valve 510 and the second drain valve 520 and the drain pump 530 are turned on to turn the rinse water into the first And drained to the outside through the drain line 641 and the second drain line 642. In this case, after the rinsing water is filled up to the full water level and a predetermined time has elapsed, the rinsing water can be drained to further improve the rinsing effect.

When the drainage of the rinsing water is completed, the sterilization module 300, the first drain valve 510, the second drain valve 520, and the drain pump 530 are turned off as shown in FIG. 7 When the raw water valve 150 and the connection line shutoff valve 350 are turned on, the raw water is filtered through the filter unit 100 and then filled in the first storage tank 210 and the second storage tank 220 The sterilization mode is terminated.

On the other hand, the completion time of the drainage may be configured to detect the completion of draining by sensing the voltage / current difference in the drainage pump 530 as described above, or may set a time to drain the drainage water for a predetermined time, A separate sensor such as a capacitance sensor or an infrared sensor may be provided to determine the completion time of the drainage.

The sterilization mode as described above may be set to be automatically repeated at regular intervals, or may be configured to be performed by a user's selection.

≪ Embodiment 2 >

FIG. 8 is a view showing a configuration of a water treatment apparatus according to a second embodiment of the present invention. The configuration of the water treatment apparatus according to the second embodiment is the same as that of the water treatment apparatus according to the first embodiment, and includes a sterilization source supply line 651, 300 in that sterilizing water generated by the sterilizing module 300 is circulated through the circulation line 624 while the raw water is supplied to the sterilizing module 300 to generate sterilized water, This is different from the first embodiment.

The water stored in the first storage tank 210 is in a state in which the chlorine (Cl) component is removed to some extent as it passes through the filter unit 100. Therefore, the water stored in the first storage tank 210 is used as it is, Generating sterilized water using raw water containing a chlorine (Cl) component is more advantageous for increasing sterilization efficiency since it can generate more sterilizing substances than generating sterilizing water.

For this purpose, the present embodiment includes a sterilizing raw water supply line 651 branching from the front end of the pretreatment sedimentation filter 110 and connected to the connection line 621, and sterilizing raw water supplied through the sterilizing raw water supply line 651 The raw water not passing through the filter unit 100 during sterilization water generation is supplied to the sterilization raw water supply line 651 via the sterilization water supply line 651 and the connection line 621, The sterilized water containing the sterilizing substance at a higher concentration can be generated.

In the first embodiment, the sanitizing module 300 is provided on the connection line 621 connected to the first storage tank 210 to generate sterilized water. However, in the present embodiment, the connection line 621, 1 circulation line 624 for circulating the sterilized water in the first storage tank 210 through the connection line 621 and the circulation line 624, And the circulation line 624 is connected to the lower space 210b of the first storage tank 210 so as to be branched from the connection line 621. [

The germicidal material generated in the sterilization module 300 flows into the connection passage 214 in the first storage tank 210 and is first diffused into the upper space 210a. The upper space 210a and the lower space 210b are communicated with each other by a predetermined distance between the edge of the first reservoir tank 210 and the inner surface of the first storage tank 210. Therefore, Circulating the water in the first storage tank 210 through the line 624 causes the germicidal material in the upper space 210a to diffuse into the lower space 210b and to sterilize the germicidal material in the upper space 210a and the lower space 210b. The concentration can be made uniform.

On the other hand, a circulation line shutoff valve 370 is installed on the circulation line 624. When the purified water filtered through the filter unit 100 is supplied to the first storage tank 210, the circulation line shutoff valve 370 The cold water in the lower space 210b can be prevented from flowing into the second storage tank 220 through the circulation line 624 to prevent the hot water efficiency from being deteriorated.

Third Embodiment

FIG. 9 is a view showing a configuration of a water treatment apparatus according to a third embodiment of the present invention. The configuration of the water treatment apparatus is the same as that of the water treatment apparatus according to the first embodiment, There is a difference from the first embodiment in that an osmotic membrane filter 130 'is provided and wastewater discharged from the reverse osmosis membrane filter 130' is supplied to the sterilizing module 300 to generate sterilizing water.

The filter unit 100 includes a reverse osmosis membrane filter 130 'for removing ionic heavy metals remaining in the raw water that has passed through the pre-carbon filter 120, and an osmosis membrane 130' And a post-carbon filter 140 'for removing chlorine components and odors contained in the exhaust gas.

The reverse osmosis membrane filter 130 'and the post-carbon filter 140' may be reversed in order, and the reverse osmosis membrane filter 130 ' A pump (not shown) may be provided.

The reverse osmosis membrane filter 130 'is provided with an inlet 131' through which raw water having passed through the pre-carbon filter 120 flows, and a water outlet 130 'through which water filtered by an internal filter member And a wastewater outlet 133 'through which the unfiltered wastewater is discharged by the filter member.

The ratio of the wastewater discharged through the wastewater discharge port 133 'to the purified water discharged through the wastewater discharge port 132' is approximately 8: 2. Therefore, in order to reduce the amount of the wasted water, A wastewater regulator 540 for regulating the wastewater separation rate is provided. The wastewater regulator 540 may be configured to block a portion of the passage through which water flows to limit the amount of water passing through the wastewater drainage line 611 within a predetermined range.

A wastewater drainage line 611 is connected to a wastewater outlet 133 'of the reverse osmosis membrane filter 130' and a wastewater supply line 623 for connecting between the wastewater drainage line 611 and the connection line 621 And a wastewater supply valve 340 for controlling the supply of wastewater to the sterilization module 300 is installed on the wastewater supply line 623 to generate sterilized water using the wastewater in the sterilization mode .

Some of the wastewater discharged from the reverse osmosis membrane filter 130 'is discharged to the outside through the wastewater discharge line 611 after the discharge amount is adjusted by the wastewater controller 540, and the rest is passed through the sterilization module 300 And sterilized and cleaned by being filled in the first storage tank 210 and the second storage tank 220 and sterilizing the inside of the water intake line while passing through the water intake line, Respectively.

The wastewater discharged through the wastewater discharge port 133 'is concentrated water that is not filtered through the reverse osmosis membrane filter 130', and dissolved ionic substances (Cl -, chlorine ions) contained in the raw water It is contained at a higher concentration than the raw water or the purified water. Therefore, when the electrolysis is performed in the sterilization module 300, sterilization efficiency can be improved because more sterilization material can be generated as compared with the case of electrolysis using raw water or purified water It is possible to minimize waste of waste water because it uses waste water.

The purified water supply line 604 is provided with a water shutoff valve 320 for controlling the supply of purified water. When the water shutoff valve 320 is turned off in the sterilization mode, And only the wastewater discharged from the reverse osmosis membrane filter 130 'flows through the wastewater supply line 623 and the sterilization module 300 to the first storage tank 210 So that the concentration of the germicidal substance in the germicidal water is increased and the germicidal effect can be improved.

The sterilization module 300 is provided in the above description. However, the sterilization module 300 may be configured to further include the circulation line 624, the circulation pump 360, and the circulation line shutoff valve 370 as in the second embodiment.

The sterilization mode according to the third embodiment of the present invention is performed in the order of drainage → wastewater inflow → sterilization water generation → sterilization water drain → rinse water inflow → rinse water drain → water inflow order, The bactericidal action of the water treatment apparatus according to the third embodiment will be described.

FIG. 10 is a view showing an operation state at the time of drainage in a water treatment apparatus according to a third embodiment of the present invention, FIG. 11 is a view showing a wastewater inflow process in the water treatment apparatus according to the third embodiment of the present invention, FIG. 13 is a view showing a process of draining sterilized water in a water treatment apparatus according to a third embodiment of the present invention, FIG. 14 is a view showing a third embodiment of the present invention 1 is a view showing the inflow process of the rinse water in the water treatment apparatus according to the example.

10, when the raw water valve 150, the sterilization module 300, the water shutoff valve 320 and the wastewater supply valve 340 are in an off state and the connection line shutoff valve 350 The first drain valve 510 and the second drain valve 520 operate the drain pump 530 in the On state to circulate the water in the first storage tank 210 and the second storage tank 220 The first drain valve 510, the second drain valve 520, and the drain pump 530 are both turned off when drainage is completed.

In this case, the completion time of the drainage may be set to be a drainage time for a predetermined time, or the drainage pump 530 may sense the voltage / current difference to detect completion of draining. Alternatively, A separate sensor 551 such as a sensor or an infrared sensor may be provided to determine the completion time of the drainage.

11, the sterilization module 300, the connection line shutoff valve 350, the first drain valve 510, the second drain valve 520, and the second drain valve 520 are connected to each other, When the raw water valve 150 and the wastewater supply valve 340 are turned on, the raw water is supplied to the reverse osmosis membrane filter 130 ' Some of the unfiltered wastewater is discharged to the outside through the wastewater regulator 540 and the wastewater discharge line 611 and the rest is discharged to the first storage tank 210 through the wastewater supply line 623 and the connection line 621. [ Lt; / RTI >

In this case, the water shutoff valve 320 is turned off to block the supply of the purified water to the first storage tank 210 through the purified water supply line 604, so that the waste water discharged from the reverse osmosis membrane filter 130 ' The concentration of the germicidal material in the sterilization water generated during the operation of the sterilization module 300 is increased and the sterilizing effect can be improved.

12, when all of the valves 150, 320, 340, 350, 510, and 520 are turned off, the inside of the first storage tank 210 is discharged to the inside of the first storage tank 210, When the sterilizing module 300 is activated, the sterilizing material is introduced into the upper space 210a through the connection channel 214 and then sterilized in the lower space 210b connected to the upper space 210a. The inside of the first storage tank 210 is filled with sterilized water, and the sterilization operation is performed for a predetermined time with the sterilized water filled.

Also, the sterilization module 300 is turned off immediately before waiting for a predetermined time after sterilizing water is filled in the first storage tank 210 or just before sterilization water in the first storage tank 210 is drained And it can be modified to another point of time if it is determined that the inside of the first storage tank 210 is sufficiently sterilized.

When the sterilization of the inside of the first storage tank 210 is completed as described above, the process of discharging sterilized water proceeds. As shown in FIG. 13, before the sterilized water is discharged to the outside, the connection line shutoff valve 350 is turned on The sterilized water in the first storage tank 210 is filled into the second storage tank 220 to sterilize the inside of the connection line 621 and the inside of the second storage tank 220. In this case, only the sterilizing water in the upper space 210a of the first storage tank 210 is filled in the second storage tank 220, and the sterilizing water in the lower space 210b does not flow into the second storage tank 220 and remains as it is. Will be.

When the sterilizing water in the first storage tank 210 is filled in the second storage tank 220, the first drain valve 510 and the second drain after waiting for a predetermined time to perform the sterilization action in the second storage tank 220. By turning on the drain valve 520 and operating the drain pump 530, the sterilizing water in the lower space 210b of the first storage tank 210 and the sterilizing water in the second storage tank 220 are moved to the outside. Drain .

As shown in FIG. 14, the raw water valve 150, the water shutoff valve 320, When the waste water supply valve 340 and the connection line shutoff valve 350 are turned on and the first drain valve 510 and the second drain valve 520 are turned off, In addition to the purified water filtered through the filter unit 100, the wastewater generated in the reverse osmosis membrane filter 130 'is also filled in the second storage tank 220. In this case, only the purified water can be introduced as the rinsing water, but if the waste water is introduced together with the purified water, the time required for rinsing can be saved.

When the rinsing water inflow process is completed, the rinsing water discharge process is performed. In the rinsing water discharge process, the open state of each valve is the same as that of the purified water discharge process. Therefore, as shown in FIG. 10, The drain pump 530 is operated while the drain valve 510 and the second drain valve 520 are turned on so that the rinsing water in the first storage tank 210 and the second storage tank 220 is discharged to the outside .

The rinsing water discharging process is completed, and the water inflow process is performed. The opening state of each valve in the inflow process is the same as in Fig. 14 except that the wastewater supply valve 340 is off, and the first storage tank 210 and the second storage tank 220 are filled up to the full water level, the sterilization mode is terminated.

In the above, the sterilization water is generated after the inflow of the waste water, but in order to shorten the sterilization time, the sterilization module 300 may be operated at the same time as the inflow of the waste water.

<Fourth Embodiment>

FIG. 15 is a view showing a configuration of a water treatment apparatus according to a fourth embodiment of the present invention. The configuration of the water treatment apparatus according to the fourth embodiment is the same as that of the water treatment apparatus according to the third embodiment except that cold water supplied through three water intake lines 631, And the constants are supplied to the user through one withdrawal port (440).

That is, the first intake line 631, the second intake line 632, and the third intake line 633 include the first intake valve 410, the second intake valve 420, and the third intake valve 430. Each of the three intake lines 631, 632, and 633 are combined into one intake port 440 to supply cold water, hot water, and purified water through one intake port 440.

At the points where the three intake lines 631, 632 and 633 meet, the inlet 440 and the first flow path of the water supplied through the first intake valve 410, the second intake valve 420, and the third intake valve 430. A flow path switching valve 550 for switching to any one of the drain lines 641 is installed.

The flow path switching valve 550 is set in the open direction of the valve so that the flow path on the intake port 440 side in the purified water mode, the sterilization mode is activated to the first storage tank 210 and the second storage tank 220 When draining the filled sterilized water to direct the drainage direction of the sterilized water drained through the first intake line 631 and the second intake line 632 and the third intake line 633 toward the first drain line 641 side. It is switched to block the intake port 440 side and open the flow path of the first drain line 641.

According to this configuration, the sterilization water can be sterilized to the inside of the water intake lines 631, 632, and 633 because the sterilization water drains through the three water intake lines 631, 632, and 633.

<Fifth Embodiment>

FIG. 16 is a view showing a configuration of a water treatment apparatus according to a fifth embodiment of the present invention. The configuration of the water treatment apparatus is the same as that of the water treatment apparatus according to the third embodiment except that it is drained to the outside discharged from the reverse osmosis membrane membrane filter 130 ' And raw water not having passed through the filter unit 100 is supplied to the sterilizing module 300 to generate sterilizing water.

It is possible to generate sterilizing water by using the raw water containing chlorine (Cl) component to generate more sterilizing material, and thus it is advantageous to improve the sterilizing efficiency. Therefore, the sterilizing water is branched at the front end of the pretreatment sedimentation filter 110, And a sterilizing raw water valve 160 for interrupting the supply of the sterilizing raw water supplied through the sterilizing raw water supply line 651, The raw water not passing through the unit 100 is supplied to the sterilization module 300 through the sterilization raw water supply line 651 and the connection line 621 to generate sterilized water containing a higher concentration of the sterilization material .

<Sixth Embodiment>

17 is a view showing the configuration of the water treatment apparatus according to the sixth embodiment of the present invention. The configuration of the water treatment apparatus is the same as that of the water treatment apparatus according to the third embodiment, and includes a circulation line 624, And the generated sterilization water circulates within the first storage tank 210, which is different from the third embodiment.

That is, this embodiment combines the features of the third embodiment of the structure for generating the sterilized water using the wastewater and the second embodiment of the structure for circulating the sterilized water in the first storage tank 210, 621 and the first storage tank 210 and a circulation line 624 for circulating the sterilized water in the first storage tank 210 through the connection line 621 and the circulation line 624, The circulation line 624 branches from the connection line 621 and is connected to the lower space 210b of the first storage tank 210 so as to communicate with the circulation line. With this configuration, the concentration of the sterilizing material in the upper space 210a and the lower space 210b of the first storage tank 210 can be made uniform. A circulation line shutoff valve 370 is provided on the circulation line 624 so that cold water in the lower space 210b of the first storage tank 210 flows into the second storage tank 220 through the circulation line 624 It is possible to prevent the hot water efficiency from deteriorating.

According to the present invention, the sterilizing module is installed on the outlet side of the water in the storage tank and the sterilizing water generated in the sterilizing module is introduced into the first storage tank, It is possible to generate sterilized water by using the water in the storage tank without draining to the outside, thereby minimizing the waste of water, and by circulating the water in the storage tank during sterilization water generation, The sterilization efficiency can be improved.

In addition, waste water generated from the reverse osmosis membrane filter can be used to generate sterilized water, thereby minimizing the waste of water and improving the sterilization efficiency by using a dissolved ionic substance contained in the wastewater to produce a high concentration of sterilizing material And the drainage line for draining the sterilized water is diverted to the outside immediately before the intake valve provided on the intake line for supplying the user with the purified water so that the inside of the intake line can be sterilized in the course of discharging sterilization water, The area of the dead zone that is not sterilized inside the apparatus can be minimized.

As described above, the present invention is not limited to the above-described embodiments, and various changes and modifications may be made without departing from the scope of the present invention as defined in the appended claims. And such modifications are within the scope of the present invention.

100 filter unit 110 pretreatment precipitation filter
120: free carbon filter 130: poster carbon filter
140: hollow fiber membrane filter 130 ': reverse osmosis membrane filter
131 ': Inlet port 132': Water outlet
133 ': Waste water outlet 140': Post carbon filter
150: raw water valve 160: raw water valve for sterilization
200: storage unit 210: first storage tank
210a: upper space 210b: lower space
211: Level sensor 212:
213: separating plate 214: connecting channel
220: second storage tank 300: sterilization module
340: Waste water supply valve 350: Connection line shutoff valve
360: circulation pump 370: circulation line shutoff valve
400: water intake 410: first intake valve
420: second intake valve 500: drain
510: first drain valve 520: second drain valve
530: drainage pump 540: wastewater regulator
550: flow path switching valves 601, 602, 603: constant flow moving lines
604: water supply line 611: wastewater drainage line
612: sterilization water supply line 621: connection line
623: wastewater supply line 624: circulation line
631: first intake line 632: second intake line
633: Third withdrawal line 651: Feed line for sterilization

Claims (14)

a) introducing the sterilization water generated in the sterilization module into the storage part;
b) draining the sterile water in the reservoir to the outside,
Wherein the storage unit includes a first storage tank and a second storage tank for storing the filtered water at different temperatures in the filter unit,
The a) step is a water treatment method consisting of the sterilization module is operated in a state in which water is introduced into the first storage tank or water is prevented from flowing out of the first storage tank. The method of claim 1,
The first storage tank and the second storage tank are interconnected by a connection line, the sterilization module is characterized in that the water treatment method is provided on the connection line. 3. The method of claim 2,
A connection line shutoff valve is provided on the connection line between the sterilization module and the second storage tank;
Wherein the connection between the first storage tank and the second storage tank is blocked by the connection line shutoff valve in the step a) 3. The method of claim 2,
Step a) is
Draining the water in the second storage tank to the outside in a state in which the water in the first storage tank is blocked by the connection line shutoff valve from flowing into the second storage tank;
Introducing sterilization water generated by operation of the sterilization module into the first storage tank;
Turning on the connection line shutoff valve to cause sterilization of the first storage tank to flow into the second storage tank through the connection line;
And a water treatment method 3. The method of claim 2,
Step a) is
Draining the water of the first storage tank and the second storage tank to the outside;
Wherein the wastewater discharged from the reverse osmosis membrane filter of the filter unit is supplied to the inside of the first storage tank in a state where the connection between the first storage tank and the second storage tank is blocked by the connection line shutoff valve provided on the connection line. An incoming step;
Introducing sterilization water generated by operation of the sterilization module into the first storage tank;
Turning on the connection line shutoff valve to cause sterilization of the first storage tank to flow into the second storage tank through the connection line;
And a water treatment method 3. The method of claim 2,
Step a) is
Draining the water of the first storage tank and the second storage tank to the outside;
Wherein the wastewater discharged from the reverse osmosis membrane filter of the filter unit is supplied to the inside of the first storage tank in a state where the connection between the first storage tank and the second storage tank is blocked by the connection line shutoff valve provided on the connection line. And sterilizing water generated by operation of the sterilizing module is introduced into the first storage tank;
Turning on the connection line shutoff valve to cause sterilization of the first storage tank to flow into the second storage tank through the connection line;
And a water treatment method 3. The method of claim 2,
Wherein the sterilization module is installed on a connection line at an outlet side through which water of the first storage tank flows out and the generated sterilization water flows into the first storage tank through the outlet of the first storage tank Water treatment method The method of claim 7, wherein
The first storage tank may include an upper space for storing the filtered water at a normal temperature state, a lower space for storing cold water, the lower space being provided with a separation plate between the upper space and the lower space, And a connecting flow channel which crosses the lower space so that the water in the lower space is not mixed with the water in the lower space and is supplied to the second storage tank through the connection line through the inside thereof;
And water in the first storage tank flows out to the connection line through the connection channel. 3. The method of claim 2,
And a circulation line branched from the connection line and interconnecting the first storage tanks. The sterilized water in the first storage tank is circulated by the circulation pump through the connection line and the circulation line, To a water treatment method 10. The method of claim 9,
The first storage tank may include an upper space for storing the filtered water at a normal temperature state, a lower space for storing cold water, the lower space being provided with a separation plate between the upper space and the lower space, And a connecting flow channel which crosses the lower space so that the water in the lower space is not mixed with the water in the lower space and is supplied to the second storage tank through the connection line through the inside thereof;
And the water in the lower space of the first storage tank is blocked from flowing into the second storage tank by the circulation line shutoff valve provided on the circulation line. The method of claim 1,
Wherein the sterilization water in the first storage tank and the second storage tank is drained through the first drain line and the second drain line in step b) The method of claim 1,
Wherein the purified water supply line for supplying water filtered by the filter unit to the storage unit is provided with a water shut-off valve, the water shut-off valve is turned off in the sterilization mode, The supply of water is interrupted. The method according to any one of claims 1 to 12,
c) rinsing the rinsing water filtered by the filter unit after the step b) into the first storage tank and the second storage tank to perform rinsing;
d) draining the rinsing water of the first storage tank and the second storage tank to the outside;
e) filling the first storage tank and the second storage tank with the purified water filtered by the filter unit;
Water treatment method characterized in that it further comprises 14. The method of claim 13,
Wherein the rinsing water is filled up to the full water level of the first storage tank and the second storage tank in the step c) and rinsed for a predetermined time, and then the rinsing water in the step d) is drained.

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