KR101444786B1 - Water treatment apparatus and water treatment method - Google Patents

Abstract

An object of the present invention is to provide a water treatment apparatus and a water treatment method which can supply clean water by sterilizing not only the inside of a water tank but also a filter membrane using sterilized water. The water treatment apparatus of the present invention for realizing this comprises a filter unit including a plurality of filters for filtering raw water; A storage unit including a first storage tank and a second storage tank for storing the filtered water at different temperatures in the filter unit; And a sterilizing module for supplying sterilizing water to the storage part, wherein when the sterilizing water is supplied to the storage part, when the water level sensor provided in the first storage tank senses the full water level, 2 It is judged that the sterilization water to be filled in the storage tank is full water level.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment apparatus and a water treatment method,

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

As the water pollution caused by the industrial development becomes serious, distrust of tap water increases, and recently, water purified by a water purifier is used as drinking water or bottled water sold in the market is widely used as drinking water.

The water purifier is configured to remove heavy metals and other harmful substances contained in raw water through processes such as sedimentation, filtration, sterilization, and absorption of raw water such as tap water. Such a water purifier is used not only for general household and business use, It is also widely used for cleaning of ultra-precision electronic parts or for medical use.

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 purified water that has passed through the hollow fiber membrane filter.

In general, in the water treatment plant, a chlorine-based sanitizing disinfectant is administered to suppress the growth of microorganisms in the water. While the tap water to which the sanitizing disinfectant is administered passes through the water purifier, chlorine is removed from the free carbon filter and the post- .

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 inside of a purified water tank by providing an electrolytic sterilizing means between the filter portion and the purified water tank for sterilizing purified water by electrolysis and producing an oxidizing mixed material.

However, the bacteria that are generated due to the long unused use of the purified water are proliferated not only in the water tank but also in the filter membrane of the filter unit. In the above-mentioned conventional technology, the bacteria remaining in the filter membrane can not be sterilized there was.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide a water treatment apparatus and a water treatment method capable of supplying clean water by sterilizing not only the inside of a water tank but also a filter membrane using sterile water .

According to an aspect of the present invention, there is provided a water treatment apparatus comprising: a filter unit including a plurality of filters for filtering raw water; A storage unit including a first storage tank and a second storage tank for storing the filtered water at different temperatures in the filter unit; And a sterilizing module for supplying sterilizing water to the storage part, wherein when sterilizing water is supplied to the storage part, when the water level sensor provided in the first storage tank senses the full water level, It is judged that the sterilization water filled in the storage tank is a full water level.

And a sterilizing water line connected in parallel to the purified water movement line and having the sterilizing module installed therein. In this case, the filter unit includes a pretreatment sedimentation filter, a carbon filter, and a hollow fiber membrane filter, The sterilization module may be installed on a sterilizing water depression connecting the outlet of the pretreatment sedimentation filter and the inlet of the hollow fiber membrane filter. In addition, a sterilizing water supply valve may be provided on the sterilizing water line to control whether sterilizing water passing through the sterilizing water line is supplied or not.

A sterilizing module may be provided on a purified water line connected to the inlet of the hollow fiber membrane filter.

The first storage tank and the second storage tank may be connected to a first drain line and a second drain line, respectively, for draining the sterilized water filled in the first storage tank and the second storage tank. The sterilized water filled in the first storage tank and the second storage tank may be drained through the first drain line. In this case, the first drainage line may be branched on a water intake line connecting the first storage tank and the intake valve. And the water stored in the first storage tank and the second storage tank is discharged through a single intake port through a plurality of intake lines; A flow path switching valve may be provided at a point where the first drain line and the water take-in line intersect to change the discharge direction of the water supplied from the first and second storage tanks. In addition, drainage valves for controlling drainage of sterilized water may be installed in the drainage lines, respectively. Further, a drainage pump may be provided to smooth drainage of sterilized water through the drainage line.

The water treatment method of the present invention comprises the steps of: a) draining water inside a storage part through which the filtered water is stored through the filter part; b) sterilizing water generated in a sterilizing module installed at a front end of the hollow fiber membrane filter of the filter unit is supplied to the storage unit after passing through the hollow fiber membrane filter; c) discharging sterilized water inside the storage unit to the outside, wherein the storage unit comprises a first storage tank and a second storage tank for storing water at different temperatures, When the water level sensor provided in the first storage tank senses the full water level, it is determined that the sterilization water filled in the first storage tank and the second storage tank is full water level.

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The drain line through which the sterilizing water is drained may be provided with a drain pump, and may be configured to detect the load variation in the drain pump and determine whether drainage is completed.

The sterilized water drained from the storage unit may be discharged to the outside through a water intake line connecting the storage unit and the intake valve.

Wherein the storage unit comprises a first storage tank and a second storage tank that store water at different temperatures and are connected to each other through a connection line, wherein the water stored in the first storage tank and the second storage tank is supplied through a plurality of intake lines And a drain line for draining the sterilized water of the first storage tank and the second storage tank when the sterilized water in the storage unit is drained to the outside through the drain line, The sterilizing water may be drained first through a water intake line connected to a storage tank installed at a lower height of the line, and then sterilized water may be drained through a water intake line connected to a storage tank installed at a higher position. In this case, the first storage tank may include an upper space for storing the filtered water at a normal temperature state, and a lower space for storing cold water with a separating plate provided between the upper space and the upper space; A third water intake valve installed on a third water intake line connected to the upper space, and a second water intake valve connected to a second water intake line connected to the second water storage line, And the first water intake valve installed on the second water intake valve.

And a sterilizing water line connected in parallel to the purified water moving line to connect the sterilizing water line to each filter of the filter unit and draining sterilized water in the storage unit to the outside, And the rinsing water may be supplied together through the purified water line and the sterilizing water line.

According to the present invention, since sterilizing module is provided at the front end of the hollow fiber membrane filter, the germicidal material generated in the sterilizing module sterilizes the germs grown in the filter membrane of the hollow fiber membrane filter and sterilizes the inside of the storage tank, Can supply.

In addition, the drainage line for draining the sterilized water is diverted from the drain just before the intake valve provided on the water intake line for supplying the user with the purified water, so that it is possible to sterilize the inside of the water intake line in the course of discharging sterilization water. It is possible to minimize the area of the dead zone which is not sterilized.

In addition, a sterilizing module is installed on the sterilizing water line connected in parallel with the water movement line, and the sterilizing module generated by the sterilizing module and the sterilizing material contained in the raw water are added by supplying the sterilizing module with water not having passed the carbon filter, The sterilizing effect of the storage tank and the water intake line can be improved by increasing the sterilizing substance concentration.

Also, by connecting one drainage line to two storage tanks to make drainage, the piping structure can be simplified.

1 is a view showing a configuration of a water treatment apparatus according to a first embodiment of the present invention,
FIG. 2 is a view showing an operation state at the time of drainage in the water treatment apparatus according to the first embodiment of the present invention, FIG.
FIG. 3 is a view showing a sterilized water inflow process in the water treatment apparatus according to the first embodiment of the present invention,
FIG. 4 is a view showing a sterilized water drainage process 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,
6 is a view showing an operation state of the rinse water drainage in 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.
8 is a view showing a 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 a configuration of a water treatment apparatus according to a fourth embodiment of the present invention,
Fig. 11 is a schematic diagram for measuring hypochlorous acid concentration depending on whether or not electrolytic sterilization water passes through the carbon filter. Fig.
12 is a schematic view for measuring the residual chlorine concentration according to the installation position of the sterilizing module in the water treatment apparatus 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 a 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.

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. Since the raw water contains a large amount of foreign matter, when the raw water flows directly into the raw water valve 150, It is preferable that the foreign substances contained in the raw water are primarily filtered in the pretreatment sedimentation filter 110 and then passed through the raw water valve 150.

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 is provided with a water level sensor 211 for sensing the water level inside the tank and controlling the supply of water to the inside of the tank and a water level sensor 211 for sensing the water flowing into the tank during the malfunction of the water level sensor 211, A separation plate 213 for separating the inner space of the tank into an upper space 210a for storing the purified water at room temperature and a lower space 210b for storing the cold water, And the second storage tank 220 is connected to the second storage tank 220 through the lower space 210b to supply the purified water to the second storage tank 220 without mixing with the cold water. A connecting 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 this embodiment, the water level sensor 211 and the ball point 212 are both provided, but only the water level sensor 211 or only the ball point 212 is provided to control the water level in the first storage tank 210 .

One end of the connection line 621 is connected to the first storage tank 210 to be connected to the connection channel 214 and the other end is connected to the second storage tank 220, 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 is installed on the sterilization water line 612. For example, the sterilization module 300 electrolyzes water to react chlorine ions contained in the raw water with hydrogen, oxygen, etc. to generate sterilizing substances such as HOCl and ClO ^- (Not shown in the figure) and a negative electrode (not shown in the figure), and the positive and negative electrodes may be supplied with power by a power supply unit (not shown in the figure) Or iridium may be coated.

A sterilization water supply valve 310 is provided at a front end of the sterilization module 300 to control whether water is supplied to the sterilization module 300. The sterilization water line 612 connects between the outlet of the pretreatment sedimentation filter 110 and the inlet of the hollow fiber membrane filter 140 and is connected in parallel with the purified water movement lines 601, 602 and 603.

When the raw water that has passed through the pretreatment sedimentation filter 110 passes through the pre-carbon filter 120 and the post-carbon filter 130, the chlorine component that functions as a sterilizing material is removed. Therefore, the purified water lines 601, 602, The raw water having passed through the pretreatment sedimentation filter 110 in the sterilization mode is supplied to the sterilization module 300 without passing through the pre-carbon filter 120 and the post-carbon filter 130, The germicidal material generated by the sterilizing material 300 and the germicidal material contained in the raw water may be added to increase the concentration of the germicidal material filled in the first storage tank 210 to improve the germicidal effect.

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 It is possible to minimize the area of the dead zone which is not sterilized.

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 changes the voltage / current according to a change in the amount of water passing through the drain pump 530, that is, a change in the load. The load variation sensor (not shown in the figure) So as to judge whether or not the drainage of purified water or sterilized water has been completed.

The sterilization mode according to the first embodiment of the present invention is performed in the following order: drainage → sterile water inflow → sterilization water drain → rinse water inflow → rinse water drain → water inflow order. The bactericidal action of the water treatment apparatus according to the example will be described.

FIG. 2 is a view showing an operation state at the time of drainage in the water treatment apparatus according to the first embodiment of the present invention, FIG. 3 is a view showing a sterilized water inflow process 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 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 and the sterilizing water supply valve 310 are in the Off state, the first drain valve 510 and the second The drain valve 520 operates the drain pump 530 to drain all the water in the first storage tank 210 and the second storage tank 220. When drainage is completed, The first drain valve 510, the second drain valve 520, and the drain pump 530 are both turned off.

Here, Off refers to a state in which the valves 150, 310, 510 and 520 are closed, or the sterilizing module 300 and the drain pump 530 are not operated. On means that the valves 150, 310, 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 the water in both the first storage tank 210 and the second storage tank 220 has been drained is detected by detecting the voltage / current variation in the load variation sensing unit, receiving the sensed signal, .

As shown in FIG. 3, the raw water valve 150, the first drain valve 510, the second drain valve 520, and the drain pump 530 are turned off when the drainage is completed, When the sterilization water supply valve 310 and the sterilization module 300 are turned on, the raw water that has passed through the pretreatment settling filter 110 is supplied to the sterilization module 300 And electrolyzing the water passing through the sterilization module 300 generates sterilizing materials such as hypochlorous acid (HClO), hypochlorite ion (OCl-), and chlorine (Cl ₂ ) And then flows into the filter 140.

In this case, the raw water having passed through the pretreatment sedimentation filter 110 does not pass through the pre-carbon filter 120 and the post-carbon filter 130, and is supplied to the sterilizing module 300 without removing the chlorine components contained in the raw water. The chlorine component contained in the raw water is added to the germicidal material generated in the sterilization module 300 to further increase the concentration of sterilizing water in the sterilized water filled in the first storage tank 210, The sterilizing water flowing into the filter membrane has an effect of sterilizing the bacteria remaining in the filter membrane while passing through the filter membrane.

Sterilized water that has passed through the hollow fiber membrane filter 140 flows into the first storage tank 210 and is filled into the upper space 210a and the lower space 210b and sterilized water flowing into the first storage tank 210 The water is also filled into the second storage tank 220 through the connection line 621 and the water level sensor 211 senses that the water levels of the first storage tank 210 and the second storage tank 220 are full The sterilization module 300 and the sterilizing water supply valve 310 are switched to the off state and then sterilized by the sterilizing water for a certain period of time.

After sterilization by the above-mentioned process, the sterilized water in the first storage tank 210 and the second storage tank 220 is drained. As shown in FIG. 4, the raw water valve 150 and the sterilization module The drain pump 530 is operated while the first drain valve 510 and the second drain valve 520 are turned on while the first drain valve 300 and the sterilizing water supply valve 310 are kept off, So that the sterilized water in the first storage tank 210 and the second storage tank 220 is discharged to the outside through the first drain line 641 and the second drain line 642.

When the drainage of the sterilized water is completed, a rinsing process for washing the sterilized water remaining in the first storage tank 210 and the second storage tank 220 is performed. As shown in FIG. 5, The first water discharge valve 510 and the second water discharge valve 520 and the drain pump 530 are both turned off while the raw water valve 150 is turned on in the state where the sterilizing water supply valve 310, the first drain valve 510, the second drain valve 520, The rinsing water is supplied through the purified water supply line 604 to the first storage tank 210 and the second storage tank 220 (hereinafter referred to as " rinsing water ") through the filter unit 100, .

In order to save the time required for supplying the rinse water, the sterilization module 300 is turned off and the sterilization water supply valve 310 (see FIG. 3) is operated while the rinsing water is supplied only through the purified water movement lines 601, 602, The rinsing water can be supplied through the sterilizing water line 612. [

When the rinsing water is filled up to the full water level of the first storage tank 210 and the second storage tank 220, drainage of the rinsing water is performed. As shown in FIG. 6, the raw water valve 150 and the sterilizing water supply valve 310 The first drain valve 510, the second drain valve 520 and the drain pump 530 are turned on and the rinse water is supplied to the first And drained to the outside through the drain line 641 and the second drain line 642. In this case, the rinsing water is filled up to the full water level, and the rinsing water is drained after the lapse of a predetermined time, thereby further improving the rinsing effect.

7, the sterilization water supply valve 310, the sterilization module 300, the first drain valve 510, the second drain valve 520, and the drain pump 530 are connected to each other, 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. When the raw water valve 150 is turned on, 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 an infrared sensor may be provided to determine the completion time of the drainage.

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

≪ Embodiment 2 >

8 is a view showing the construction of the water treatment apparatus according to the second embodiment of the present invention. The construction of the water treatment apparatus is the same as that of the water treatment apparatus according to the first embodiment, and the cold water supplied through the three water intake lines 631, 632, And that the purified water is supplied to the user through one water inlet 440 and the sterilized water of the first storage tank 210 and the second storage tank 220 is discharged through one drain line 641 .

The first water intake valve 410, the second water intake valve 420 and the third water intake valve 430 are connected to the first water intake line 631, the second water intake line 632 and the third water intake line 633 And the three water intake lines 631, 632, and 633 are combined into one water intake port 440 so that the cold water, the hot water, and the purified water are supplied through one water intake port 440.

The water flow direction of the water supplied through the first water intake valve 410, the second water intake valve 420 and the third water intake valve 430 is connected to the water intake port 440 and the first water intake port 440 at a point where the three water intake lines 631, And a drain line 641. The drain line 641 is connected to the drain line 641,

In the constant mode, the flow path switching valve 550 sets the opening direction of the valve so that the flow path on the side of the intake port 440 is opened. However, when the sterilization mode is operated to connect the first storage tank 210 and the second storage tank 220 The drainage direction of the sterilized water drained through the first water intake line 631, the second water intake line 632 and the third water intake line 633 is guided to the first drainage line 641 side when draining the filled sterilized water And is switched to shut off the intake port 440 side and open the flow path of the first drainage line 641.

In the sterilization mode, the sterilization water drainage of the first storage tank 210 and the second storage tank 220 is performed through one drain line 641. That is, when the drain pump 530 and the flow path switching valve 550 are turned on to drain sterilized water in the first storage tank 210 and the second storage tank 220 to the outside, The water in the tank 210 and the second storage tank 220 is drained to the outside through the first drainage line 641.

In this case, when the capacity of the drain pump 530 is increased, noise may be generated and the structure may become complicated due to an increase in volume. In this case, the drain pump 530 may be disposed in the first drain line 641, The water in the first storage tank 210 and the water in the second storage tank 220 are discharged to the first drain line 641 by a pressure difference .

Hereinafter, a method of draining water from the first storage tank 210 and the second storage tank 220 through the first drain line 641 will be described.

First, the second intake valve 420 is opened in a state that the flow path switching valve 550 is turned on. In this case, the water in the second storage tank 220 is drained to the first drain line 641 through the second drain line 632 connected to the upper portion, and the second drain line 632 is drained to the second drain In order to drain the water in the second storage tank 220 through the second water intake line 632 because the water is located higher than the tank 220 and the water in the upper space 210a of the first storage tank 210 is drained through the second water intake line 632, 2 storage tank 220 so that the water in the second storage tank 220 drains through the second water intake line 632 together with the water introduced from the upper space 210a.

In this case, the third intake valve 430 is opened for a predetermined time after the second intake valve 420 is opened. In this case, sterilization water in the upper space 210a is drained through the third intake line 633 The inside of the third water intake line 633 can be sterilized.

The first water intake valve 410 is opened after the third water intake valve 430 is opened so that the water in the lower space 210a of the first storage tank 210 is drained through the first water intake line 631. [ The upper space 210a and the lower space 210b are communicated with each other by a predetermined distance between the edge of the separator 213 of the first storage tank 210 and the inner surface of the first storage tank 210 The water in the upper space 210a may be introduced into the lower space 210b and then drained through the first water intake line 631 even if only the first water intake valve 410 is opened.

In this way, the water in the first storage tank 210 and the second storage tank 220 can be drained through one drain line 641 to simplify the piping structure, It is possible to sterilize even the interior of the cells 631, 632, 633, thereby minimizing the area of the dead zone which is not sterilized.

≪ Third Embodiment >

FIG. 9 is a view showing a configuration of a water treatment apparatus according to a third embodiment of the present invention, wherein all configurations are the same as those of the water treatment apparatus according to the second embodiment, and the sterilization module 300 is disposed immediately before the hollow fiber membrane filter 140 And is installed on the integer movement line 603 connected to the integer movement line 603.

In the first and second embodiments, the sterilizing module 300 is installed on the sterilizing water line 612 connected in parallel with the integer movement lines 601, 602 and 603. However, in the present embodiment, the sterilizing water line 612 The sterilizing module 300 is provided on the purified water line 603 connected to the inlet of the hollow fiber membrane filter 140. When the sterilizing mode is activated, sterilizing water generated in the sterilizing module 300 140 can be sterilized so that cleaner water can be supplied to the user.

<Fourth Embodiment>

FIG. 10 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 is the same as that of the water treatment apparatus according to the third embodiment. In the lower part of the second storage tank 220, (642) is provided.

The second drain line 642 is connected to the lower portion of the second storage tank 220 so that the water in the first storage tank 210 and the second storage tank 220 is discharged through the first drain line 641 and the second drainage line 642, respectively.

<Experimental Results>

11 is a schematic diagram for measuring the concentration of hypochlorous acid depending on whether the sterilized water passes through the carbon filter, and the experimental results will be described with reference to Fig.

This experiment was conducted to examine whether the sterilization water generated by the sterilization module could sterilize bacteria remaining in the filter membrane of the hollow fiber membrane filter according to whether the sterilization water passed through the pre-carbon filter or the post-carbon filter .

Measuring position Measurement ① Measure ② Measurement ③ Hypochlorous acid
(ppm) 32 3 29 33 3 30 33 4 31 Average 33 3 30

The experimental results shown in the above table are the result of measuring the concentration of hypochlorous acid at three measurement points as shown in FIG. First, the first point indicated by measurement ① is the point where sterilized water is taken immediately after passing the salt water in which the chloride ion is dissolved into the sterilization module for generating the sterilizing substance. In the sterilization water at the measuring point ①, the average amount of hypochlorous acid is 33 ppm Concentration.

Next, the second point indicated by measurement (2) is the point where the sterilized water generated from the sterilization module is passed through the pre-treatment sedimentation filter, the pre-carbon filter, the post-carbon filter and the hollow fiber membrane filter, The sterilized water in (2) contains hypochlorous acid at an average concentration of 3 ppm. It can be seen that the bactericidal substance such as hypochlorous acid is removed through the pre-carbon filter and the post-carbon filter to lower the sterilization concentration of sterilized water.

Finally, the third point indicated by the measurement (3) is the point where the sterilization water generated in the sterilization module is passed through the pretreatment sedimentation filter and the hollow fiber filter in order, and the sterilization module 300 of the first embodiment of the present invention . In this case, as shown in the above table, the sterilized water in measurement (3) contains hypochlorous acid at an average concentration of 30 ppm, and the filter membrane of the hollow fiber membrane filter and the first and second The inside of the storage tanks 210 and 220 and the first to third water intake lines 631, 632 and 633 can be sufficiently sterilized.

FIG. 12 is a configuration diagram for measuring the concentration of residual chlorine according to the installation position of the sterilizing module in the water treatment apparatus of the present invention, and the experimental results will be described with reference to FIG.

This experiment was conducted to determine whether the sterilization module is suitable for sterilization by measuring the concentration of residual chlorine in the sterilization water generated by the sterilization module, depending on whether the sterilization module is located at the downstream of the pretreatment sedimentation filter or at the downstream of the poster carbon filter to be.

enemy Sterilization module location After the pretreatment sedimentation filter Post carbon filter rear end Residual chlorine (ppm)

0.12 1.16 0.95 0.87 0.18 1.12 0.98 0.92 0.14 1.14 1.02 0.85 Average 0.15 1.14 0.98 0.88

12 (a), when the sterilization module is located at the downstream end of the pretreatment sedimentation filter, if the raw water having a residual chlorine concentration of about 0.1 to 0.2 ppm is electrolyzed in the sterilization module located at the downstream end of the pretreatment sedimentation filter, The residual chlorine concentration included was measured as 1.14 ppm on average.

When the sterilization module is located at the rear end of the post-carbon filter as shown in FIG. 12 (b), when the raw water is electrolyzed in the sterilization module located at the rear end of the post-carbon filter, the residual chlorine concentration contained in the sterilized water is 0.98 or 0.88 ppm.

Typically, the effective chlorine concentration to be administered in the water treatment plant is between 0.2 and 0.8 ppm, and the effective chlorine concentration of the tap water flowing into the home is about 0.2 to 0.4 ppm. At this level of chlorine concentration, microorganisms generally breed can not do it.

Therefore, as shown in the experimental results of the present invention, sterilizing water having a residual chlorine concentration of 1.14 ppm can be generated when the sterilizing module is disposed on the downstream side of the pretreatment sedimentation filter as in the first and second embodiments, Even when the sterilizing module is disposed at the rear end of the post-carbon filter as in the third and fourth embodiments, sterilizing water having a residual chlorine concentration of 0.98 or 0.88 ppm can be generated and is sufficient to function as sterilizing water.

The results may vary depending on the chlorine ion concentration of the tap water, the structure of the sterilizing module, and the combination of the electrodes, and the concentration may vary according to the current value applied to the electrodes. The structure of the sterilizing module, The concentration of the germicidal substance can be increased by applying a sterilizing module having a higher efficiency through regulation.

As described above, according to the present invention, sterilizing module is provided at the front end of the hollow fiber membrane filter, thereby sterilizing the germs generated in the filter membrane of the hollow fiber membrane filter and sterilizing the inside of the storage tank, The water can be supplied to the user and the drain line for draining the sterilized water is branched from the drain just before the water intake valve provided on the water intake line for supplying water to the user and discharged to the outside, It is possible to minimize the area of the dead zone which is not sterilized inside the water treatment apparatus. In addition, by supplying the sterilization module with the water not passing through the carbon filter, the sterilization material generated by the sterilization module and the sterilization material contained in the raw water are added, thereby increasing the concentration of the sterilization material in the sterilization water and improving the sterilization effect of the storage tank and the water intake line And the piping structure can be simplified by connecting one drainage line to the two storage tanks to make drainage.

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: post carbon filter
140: hollow fiber membrane filter 150: raw water valve
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
310: sterilization water supply valve 400:
410: first intake valve 420: second intake valve
430: Third intake valve 440:
500: drain part 510: first drain valve
520: second drain valve 530: drain pump
550: flow path switching valves 601, 602, 603: constant flow moving lines
604: purified water supply line 612: sterilized water supply line
621: connection line 631: first withdrawal line
632: second withdrawal line 633: third withdrawal line
641: first drain line 642: second drain line

Claims (26)

A filter portion including a plurality of filters for filtering raw water;
A storage unit including a first storage tank and a second storage tank for storing the filtered water at different temperatures in the filter unit;
And a sterilizing module for supplying sterilizing water to the reservoir,
Wherein when the sterilizing water is supplied to the storage unit, when the water level sensor provided in the first storage tank senses the full water level, it is determined that the sterilization water filled in the first storage tank and the second storage tank is a full water level The method according to claim 1,
A sterilizing water line connected in parallel to the purified water movement line and having the sterilizing module installed therein, 3. The method of claim 2,
Wherein the filter unit includes a pretreatment sedimentation filter, a carbon filter, and a hollow fiber membrane filter, Wherein the sterilizing module is installed on the surface of the sterilization water connecting the outlet of the pretreatment sedimentation filter and the inlet of the hollow fiber membrane filter. The method according to claim 2 or 3,
Characterized in that a sterilization water supply valve is provided on the sterilization water line for controlling the supply of sterilization water passing through the sterilization water line The method according to claim 1,
Wherein the filter unit includes a pretreatment sedimentation filter, a carbon filter, and a hollow fiber membrane filter, wherein the filtration unit is provided with a constant flow line connecting each filter of the filter unit, and the sterilizing module is provided on the constant flow line connected to the inlet of the hollow fiber membrane filter A water treatment device The method according to claim 1,
Wherein the first storage tank and the second storage tank are respectively connected to a first drain line and a second drain line for draining the sterilized water filled in the first storage tank and the second storage tank, The method according to claim 1,
Characterized in that the sterilized water filled in the first storage tank and the second storage tank is drained through a first drain line, 8. The method according to claim 6 or 7,
Wherein the first drainage line is branched on a water intake line connecting the first storage tank and the intake valve. 8. The method according to claim 6 or 7,
The water stored in the first storage tank and the second storage tank is discharged through a single intake port via a plurality of intake lines; And a channel switching valve for switching the discharge direction of the water supplied from the first and second storage tanks is provided at a point where the first drain line and the water intake line cross each other, The method according to claim 6,
The first drain line and the second drain line Characterized in that a drain valve for controlling drainage of sterilized water is provided 8. The method according to claim 6 or 7,
Wherein a drainage pump is provided to smooth drainage of sterilized water through the first drainage line. 8. The method of claim 7,
Wherein the first drainage line is provided with a drain valve for controlling drainage of sterilized water. a) draining the water in the reservoir where the filtered water is stored through the filter section;
b) supplying sterile water generated in the sterilization module to the storage;
c) draining the sterilized water inside the storage unit to the outside,
The storage unit may include a first storage tank and a second storage tank for storing water at different temperatures. When the sterilizing water is supplied to the storage unit, when the level sensor of the first storage tank senses the full water level A water treatment method for determining that the sterilization water filled in the first storage tank and the second storage tank is a full water level 14. The method of claim 13,
Wherein the drainage line through which the sterilizing water is drained is provided with a drainage pump, and the drainage pump is provided to detect a load variation in the drainage pump, 14. The method of claim 13,
Wherein the sterilization water drained from the storage unit is discharged to the outside through a water intake line connecting the storage unit and the intake valve. 14. The method of claim 13,
Wherein the water stored in the first storage tank and the second storage tank is discharged to the intake port through a plurality of water intake lines and a drain line for draining sterilized water from the first storage tank and the second storage tank, When the sterilized water in the inside of the unit is drained to the outside via the drain line, the sterilization water is drained first through the drain line connected to the storage tank installed at a lower height among the plurality of drain lines, And sterilizing water is drained through a water intake line connected to the water treatment method 17. The method of claim 16,
Wherein the first storage tank comprises an upper space for storing the filtered water at a normal temperature state and a lower space for storing cold water with a separating plate provided between the upper space and the second space for storing the cold water, A third water intake valve installed on a third water intake line connected to the upper space and a first water intake valve installed on a first water intake line connected to the lower space, And water is drained by opening the drainage pipe 14. The method of claim 13,
And a sterilizing water line connected in parallel to the purified water moving line and having the sterilizing module installed therein. 19. The method of claim 18,
Characterized in that the sterilization water in the storage unit is drained to the outside and the rinsing water is supplied together through the purified movement line and the sterilization water line 19. The method of claim 18,
Wherein the supply of the sterilized water is controlled by a sterilization water supply valve provided on the pull of the sterilization water. 14. The method of claim 13,
Wherein the sterilizing module is provided on the purified movement line, wherein the sterilizing module is provided with a constant movement line connecting between the filters of the filter unit 14. The method of claim 13,
d) rinsing the rinsing water filtered by the filter unit after the step c) into the first storage tank and the second storage tank to perform rinsing;
e) draining the rinsing water of the first storage tank and the second storage tank to the outside;
f) filling the first storage tank and the second storage tank with the purified water filtered by the filter unit;
Further comprising a water treatment method 23. The method of claim 22,
Wherein the rinsing water is filled up to the full water level of the first storage tank and the second storage tank in step d), and rinsing water is drained in step e) after rinsing for a predetermined time. 23. The method of claim 22,
The first storage tank and the second storage tank are connected by a connection line and the sterilized water and the rinse water are first introduced into the first storage tank and then introduced into the second storage tank via the connection line Water treatment method characterized by 14. The method of claim 13,
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, respectively. 14. The method of claim 13,
Wherein the sterilized water in the first storage tank and the second storage tank is drained through the first drain line

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