KR101439948B1 - 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 capable of minimizing waste of water and improving sterilization efficiency by generating sterile water by using waste water discharged from a reverse osmosis membrane filter. The water treatment apparatus of the present invention for realizing this comprises a filter unit including a reverse osmosis membrane filter for filtering raw water; A storage unit for storing the filtered water in the filter unit; A sterilizing module for supplying sterilizing water to the storage part using wastewater discharged from the reverse osmosis membrane filter; And a waste water drain line for discharging the wastewater to the outside, wherein the storage portion is connected to a sterilizing water supply line branched from the waste water drain line to supply the sterilizing water; On the wastewater drainage line, a wastewater regulator for limiting the amount of waste water discharged to the outside is installed.

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 or natural water, a pretreatment sedimentation filter for filtering the debris in the raw water that has passed through the raw water valve, A reverse osmosis membrane filter for removing ionic heavy metals remaining in the raw water that has passed through the pre-carbon filter; and a reverse osmosis membrane filter for removing chlorine components and odors from the raw water, A post-carbon filter for removing chlorine components and odors contained in the purified water passing through the reverse osmosis membrane filter, a post-carbon filter for removing waste water from the waste water, And a water tank for storing the passed integer.

In general, in a water treatment plant, a chlorine-based disinfectant is dispensed to inhibit the growth of microorganisms in the water. While the tap water to which the disinfectant is dispensed passes through the water purifier, the chlorine component is partially removed from the pre- After the chlorine component is removed, it is stored in the 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 such a configuration, the dissolved ionic material contained in the raw water is removed while passing through the filter unit, so that a sufficient amount of the sterilizing material may not be generated during the passage through the electrolytic sterilizing unit, resulting in a problem that the sterilizing efficiency is inferior.

In addition, the filter unit may be equipped with a reverse osmosis membrane filter. In general, the amount of purified water in the raw water obtained by the reverse osmosis membrane filter and the amount of water discharged into the waste water is 8: 2.

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 apparatus and a water treatment method capable of minimizing waste of water by producing sterilized water by using waste water discarded in an reverse osmosis membrane filter, The present invention has been made to solve the above problems.

According to an aspect of the present invention, there is provided a water treatment apparatus comprising: a filter unit including a reverse osmosis membrane filter for filtering raw water; A storage unit for storing the filtered water in the filter unit; A sterilizing module for supplying sterilizing water to the storage part using wastewater discharged from the reverse osmosis membrane filter; And a waste water drain line for discharging the wastewater to the outside, wherein the storage portion is connected to a sterilizing water supply line branched from the waste water drain line to supply the sterilizing water; And a wastewater regulator for limiting the amount of wastewater discharged to the outside may be installed on the wastewater drainage line.

A sterilization water supply valve may be provided on the sterilization water supply line to control whether sterilization water passing through the sterilization water supply line is supplied. Also, the sterilizing module may be installed on the sterilizing water supply line or may be installed in front of the inlet of the reverse osmosis membrane filter.

The reverse osmosis membrane filter is connected to the inlet of the reverse osmosis membrane filter by a water supply line through which raw water is filtered and a sterilizing water line through which the sterilizing module is installed. Respectively.

The purified water supply line and the sterilized water supply line may be combined and connected to the storage unit. In this case, the purified water supply line and the sterilized water supply line may be combined into one and connected to a ball tower that limits the water level of the storage unit.

The purified water supply line may be provided with a water shutoff valve for shutting off the supply of the purified water through the purified water supply line when the sterilization module is operated.

Wherein the first storage tank and the second storage tank are provided with 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, Drain lines can be connected respectively.

In this case, the first drain line may be branched on the water intake line connecting the first storage tank and the intake valve and connected to the waste water drain line.

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.

The first drain line and the second drain line may each be provided with a drain valve for controlling drainage of the sterilized water. In order to smooth drainage of sterilized water through the first drain line and the second drain line, a drain pump .

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A water treatment method according to the present invention comprises the steps of: a) draining water inside a storage part through which a filtered water is stored through a filter part; b) sterilizing the sterilized water by supplying sterilized water to the storage unit using wastewater discharged from the reverse osmosis membrane filter of the filter unit; c) discharging the sterilized water in the storage unit to the outside, wherein the wastewater discharged from the reverse osmosis membrane filter is drained to the outside through the wastewater drain line in a state where the flow rate is controlled by the wastewater regulator, And the water is supplied to the reservoir through a sterilizing water supply line branched from the waste water drain line.

In this case, in the step b), the sterilized water generated by using the waste water at the rear end of the waste water outlet of the reverse osmosis membrane filter may be supplied to the storage unit.

In the step b), the sterilizing material generated at the front end of the inlet of the reverse osmosis membrane filter may be introduced into the reverse osmosis membrane filter and then discharged through the waste water outlet to be supplied to the storage unit.

The sterilized water may be supplied by supplying purified water and unfiltered wastewater filtered in the reverse osmosis membrane filter together in the storage unit in step b).

In the step b), the purified water in the reverse osmosis membrane filter may not be supplied to the storage part, but only the unfiltered wastewater from the reverse osmosis membrane filter may be supplied to the storage part to supply sterilized water.

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 water level sensor provided in the first storage tank senses the full water level It may be determined that the sterilization water filled in the first storage tank and the second storage tank is a full water level.

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In this case, after the sterilized water is drained to the outside in the step c), the waste water discharged from the reverse osmosis membrane filter may be supplied to the storage unit to rinse the inside of the storage unit.

The disinfection water drain line through which the sterilizing water is drained is provided with a drain pump, and the load fluctuation in the drain pump is detected to determine whether drainage is completed.

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The reverse osmosis membrane filter may be constructed such that the reverse osmosis membrane filter membrane is washed by a sterilizing material generated in a sterilizing module installed at a front end of the inlet of the reverse osmosis membrane filter.

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

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According to the present invention, waste water generated from the reverse osmosis membrane filter can be used to generate sterilized water, thereby minimizing the waste of water and generating a high concentration of sterilizing material using the dissolved ionic material contained in the wastewater. The efficiency can be improved.

In addition, when the sterilizing module is installed on the front side of the reverse osmosis membrane filter, the sterilizing material generated in the sterilizing module sterilizes the bacteria grown on the filter membrane of the reverse osmosis membrane filter, thereby supplying clean water to the user.

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.

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,
11 is a view showing a configuration of a water treatment apparatus according to a fifth embodiment of the present invention,
12 is a view showing a configuration of a water treatment apparatus according to a sixth embodiment of the present invention,
13 is a view showing an operation state at the time of drainage in the water treatment apparatus according to the sixth embodiment of the present invention,
FIG. 14 is a view showing the inflow of wastewater in the water treatment apparatus according to the sixth embodiment of the present invention,
15 is a view showing a sterilizing water generating process in a water treatment apparatus according to a sixth embodiment of the present invention,
16 is a view showing a sterilized water drainage process in the water treatment apparatus according to the sixth embodiment of the present invention,
17 is a view showing a process of inflowing rinse water in the water treatment apparatus according to the sixth embodiment of the present invention,
18 is a view showing a configuration of a water treatment apparatus according to a seventh embodiment of the present invention,
19 is a schematic diagram 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 reverse osmosis membrane filter 130 for removing ionic heavy metals remaining in the raw water and a post carbon filter 140 for removing chlorine components and odors contained in purified water passing through the reverse osmosis membrane filter 130, ≪ / RTI >

A reverse osmosis membrane filter 130 and a post-carbon filter 140 may be reversed, and a pump for pressurizing the raw water supplied to the reverse osmosis membrane filter 130 at a predetermined pressure (Not shown).

A plurality of pipes 601, 602 and 603 are connected between the filters 110, 120, 130 and 140 to form a raw water supply line through which the raw water moves, and a pipe (not shown) for connecting the pretreatment sedimentation filter 110 and the pre- 601 may include a raw water valve 150 for interrupting 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 reverse osmosis membrane filter 130 includes an inlet 131 through which raw water having passed through the pre-carbon filter 120 flows, a water outlet 132 through which water filtered by an internal filter member And a waste water outlet 133 through which the waste water not filtered by the filter member is discharged is formed.

The ratio of the wastewater discharged through the wastewater discharge port 133 to the purified water discharged through the wastewater discharge port 132 is about 8: 2. Therefore, in order to reduce the amount of the wastewater discharged from the wastewater discharge line 611, A wastewater regulator 540 for adjusting the ratio is provided. The wastewater regulator 540 may be configured to block a part of the water flowing path to limit the amount of water passing through the wastewater drainage line 611 to within a certain range.

The storage unit 200 is for storing the filtered water in the filter unit 100 and includes a first storage tank 210 for storing cold water and purified water, And a second storage tank 220 connected to the tank 210 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 the water flows into the first storage tank 210 is blocked at a higher level than the level sensor 211.

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.

A purified water supply line 604 for supplying purified water and a sterilized water supply line 612 for supplying sterilized water are provided between the filter unit 100 and the storage unit 200 and the sterilized water supply line 612 A sterilizing module 300 for supplying sterilizing water to the storage unit 200 is installed.

The purified water supply line 604 has one end connected to the post carbon filter 140 and the other end connected to the ballpoint 212 of the first storage tank 210. When the water level sensor 211 fails, The supply of purified water and sterilizing water supplied through the supply line 604 is regulated by one ball tip 212.

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

The sterilization water supply line 612 is configured such that one end is branched at the waste water drainage line 611 and the other end is connected to the first storage tank 210 so that the wastewater discharge port of the reverse osmosis membrane filter 130 133 may be supplied to the sterilizing module 300 through the sterilizing water supply line 612 to generate sterilizing water and supply the sterilizing water thus generated to the first storage tank 210.

The wastewater discharged through the wastewater discharge port 133 is concentrated water that has not been filtered through the reverse osmosis membrane filter 130. The dissolved ionic material (Cl-, chlorine ion) When the electrolytic solution is passed through the sterilization module 300, sterilization efficiency can be improved as compared with the case where electrolysis is performed using raw water or purified water, In addition, since waste water is used as wastewater, waste of waste water can be minimized.

A sterilization water supply valve 310 is provided on the sterilization water supply line 612 to control whether water is supplied to the sterilization module 300 and the sterilization water supply line 612 is combined with the purified water supply line 604 And is connected to the ball tower 212 of the first storage tank 210. When the purified water supply line 604 and the sterilized water supply line 612 are combined to be connected to the ball towers 212 of the first storage tank 210, the water level sensor 211 or the sterilizing water supply valve 310 When the sterilizing water is filled in the first storage tank 210 for a certain level or more even when the sterilizing water is introduced into the first storage tank 210 as well as when the purified water is introduced into the first storage tank 210, It is possible to simplify the configuration.

The purified water supply line 604 is connected to the ball tow 212 and the sterilized water supply line 612 is connected to the sterilized water supply line 612. In this embodiment, May be configured to be directly connected to the first storage tank 210 without a mechanical shutdown device such as the ball tow 212. In this case, the level of the sterilized water filled in the first storage tank 210 is adjusted only by the water level sensor 211.

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, And a second water intake valve 420 installed on the second water intake line 632 connected to the second water storage tank 220 and regulating the supply of hot water.

The drainage unit 500 not only drains the waste water discharged from the reverse osmosis membrane filter 130 to the outside through the waste water drainage line 611 after adjusting the discharge amount by the waste water regulator 540, And sterilized water is filled in the tank 210 and the second storage tank 220 to drain the sterilized water to the outside.

The first drain line 641 branched from the first water intake line 631 and the sterilized water inside the second storage tank 220 are discharged to the outside in order to discharge sterilized water in the first storage tank 210 to the outside There is provided a second drainage line 642 for drainage and two drainage valves 510 and 520 for controlling sterilization water drained through the first drainage line 641 and the second drainage line 642 .

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. If the drainage pump 530 is installed as in the present embodiment, the drainage time can be shortened can do.

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, .

3, the first drain valve 510, the second drain valve 520, and the drain pump 530 are in an off state, and the raw water When the valve 150 and the sterilizing water supply valve 310 and the sterilizing module 300 are turned on, the purified water filtered by the reverse osmosis membrane filter 130 passes through the post-carbon filter 140, A part of the wastewater which has not been filtered by the reverse osmosis membrane filter 130 is discharged to the outside through the wastewater regulator 540 and the wastewater drainage line 611 and the other is discharged through the sterilizing water supply line 612 Electrolysis of the wastewater passing through the sterilization module 300 is performed by supplying sterilizing materials such as hypochlorous acid (HClO), hypochlorite ion (OCl-) and chlorine (Cl ₂ ) And is introduced into the first storage tank 210 and the second storage tank 220.

The amount of wastewater drained through the wastewater drainage line 611 is regulated in the wastewater regulator 540 and then only a very small amount is drained and most of the remaining wastewater is supplied to the sterilization module 300 through the sterilization water supply line 612 When the wastewater supplied to the sterilization module 300 is electrolyzed, the generation of the germicidal material is promoted to improve the germicidal effect, and the waste water that is discharged is recycled, thereby saving water resources.

That is, the chlorine component is removed from the pre-carbon filter 120 and the post-carbon filter 140, and the chlorine ion (Cl ^- ), which is an ionic substance, is removed from the reverse osmosis membrane filter 130, In the case where sterilized water is generated in the sterilization module 300 using filtered water, the concentration of the sterilant may be low. Therefore, in the present invention, the sterilization water is concentrated using concentrated water having a higher ionic concentration than the raw water Respectively.

In this case, the purified water is supplied to the first storage tank 210 and the second storage tank 220 through the purified water supply line 604 as well as sterilized water. The waste water supplied to the sterilization module 300 The purified water supplied through the purified water supply line 604 is mixed because the concentrated water containing a large amount of the ionic material generates sterilized water at a concentration about 1.2 to 1.5 times higher than the sterilized water generated by using the raw water directly The sterilizing water supplied through the sterilizing water supply line 612 has a high concentration of the germicidal substance, so that the sterilizing function can be sufficiently performed.

Also, in the prior art, it is difficult to sterilize the inside of the first water intake line 631. However, in the present invention, since the sterilization water is also filled in the first water intake line 631 at the front end where the first water intake valve 410 is installed, It is possible to minimize the occurrence area of the dead zone which is not sterilized inside the water treatment apparatus.

The sterilized water flowing into the first storage tank 210 is also filled into the second storage tank 220 through the connection line 621 and the water level of the first storage tank 210 and the second storage tank 220 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 predetermined period of time after the water sensor 201 detects the full water level Action.

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, 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 through the waste water drain line 611 .

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, .

The rinsing water flows into the first storage tank 210 only through the purified water supply line 604, but the rinsing water flows through the reverse osmosis membrane filter 130 to the first storage tank 210, And the time required for filling up to the full water level of the water tank is long.

Therefore, if only the sterilizing water supply valve 310 of the sterilizing water supply line 612 is turned on and the raw water valve 150 is turned on while the sterilizing module 300 is turned off, Supply line 604 and the sterilizing water supply line 612, the time required for supplying the rinse water can be saved. In this case, if a separate filter (not shown in the figure) is formed on the sterilized water supply line 612, the water from which suspended substances that may be contained in the wastewater can be removed can be used as a rinsing water, .

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 and the second drain valve 520 and the drain pump 530 are turned on so that the rinse water is discharged to the drain water And drained to the outside through the line 611. 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 configuration of the water treatment apparatus according to the second embodiment of the present invention. All the constitutions are the same as the water treatment apparatus according to the first embodiment, and the purified water shutoff valve 320 is provided on the purified water supply line 604, Is further provided.

The purified water shutoff valve 320 controls whether or not the purified water passing through the purified water supply line 604 is supplied to the sterilization module 300 so that the sterilization module 300 is operated to connect the first storage tank 210 and the second storage tank 220, The supply of purified water is cut off through the purified water supply line 604 and only the sterilized water is supplied through the sterilized water supply line 612 to the first storage tank 604. [ Since the sterilizing water is supplied to the second storage tank 210 and the second storage tank 220, the concentration of the sterilizing material in the sterilizing water is increased, and the sterilizing effect can be improved.

≪ Third Embodiment >

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. All of the cold water and hot water supplied through the three water intake lines 631, And the constants are supplied to the user through one withdrawal port (440).

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.

<Fourth Embodiment>

FIG. 10 is a view showing a configuration of a water treatment apparatus according to a fourth embodiment of the present invention, wherein all configurations are the same as those of the water treatment apparatus according to the first embodiment, And three water intake lines 631, 632, 633, one water intake port 440 and a flow path switching valve 550 are provided.

When the sterilization mode is activated, sterilized water is generated as the water filtered in the pretreatment carbon filter 120 passes through the sterilizing module 300 and is introduced into the reverse osmosis membrane filter 130, and the pore of the membrane of the reverse osmosis membrane filter 130 The sterilizing material, which is an ion component included in the sterilizing water, can not pass through the membrane of the reverse osmosis membrane filter 130 and is discharged through the waste water outlet 133 to the sterilizing water supply line The purified water is introduced into the first storage tank 210 via the purified water supply line 612 and the purified water passing through the membrane of the reverse osmosis membrane filter 130 flows into the first storage tank 210 through the purified water supply line 604. On the sterilized water supply line 612, a sterilized water supply valve 310 is provided to control whether sterilized water is supplied or not.

Even if the sterilizing module 300 is installed on the upstream side of the inlet 131 of the reverse osmosis membrane filter 130 according to the experimental results described later, the residual chlorine concentration of the sterilizing water supplied through the sterilizing water supply line 612, It can be confirmed that it is sufficient to carry out the present invention.

Further, if the water treatment apparatus is not used for a predetermined period of time, bacteria will multiply on the filter membrane of the reverse osmosis membrane filter 130. When the sterilizing module 300 is installed on the upstream side of the reverse osmosis membrane filter 130 as described above The germicidal material generated in the sterilization module 300 may be introduced into the reverse osmosis membrane filter 130 to sterilize the filter membrane while being in contact with the filter membrane, thereby providing more clean water to the user.

Although the embodiment has been described with one intake port 440 and the passage switching valve 550, it is also possible to configure a valve such as the first drain valve 510 in a plurality of intake ports as in the first embodiment, .

<Fifth Embodiment>

11 is a view showing a configuration of a water treatment apparatus according to a fifth embodiment of the present invention, wherein all configurations are the same as those of the water treatment apparatus according to the first embodiment, and the sterilization module 300 includes the reverse osmosis membrane filter 130 And is installed at the front end.

The inlet 131 of the reverse osmosis membrane filter 130 is connected to a raw water supply line 602 through which raw water filtered by the free carbon filter 120 flows to the outlet of the free carbon filter 120, A sterilization water line 605 in which a sterilization water supply valve 330 and a sterilization water supply valve 330 are installed are connected in parallel.

The sterilization water supply valve 330 is also disposed on the sterilization water supply line 612 connected to the waste water outlet 133 of the reverse osmosis membrane filter 130 in addition to the sterilization water supply valve 330 provided on the inlet side of the sterilization module 300 310 are installed.

When the first storage tank 210 and the second storage tank 220 are filled with water, the raw water valve 150 is turned on with the sterilizing module 300 and the sterilizing water supply valves 310 and 330 off And the raw water flows into the first storage tank 210 and the second storage tank 220 through the filter unit 100.

On the other hand, when the sterilization mode is activated, the raw water valve 150 is turned off to shut off the path to the pre-carbon filter 120, and the sterilization water supply valves 310 and 330 and the sterilization module 300 are turned on The water that has passed through the pretreatment sedimentation filter 110 passes through the sterilization module 300 to generate sterilized water to be introduced into the inlet 130 of the reverse osmosis membrane filter 130.

Since the pore diameter of the membrane of the reverse osmosis membrane filter 130 is 0.0001 μm, it does not permeate to the ion component in the raw water. Therefore, the sterilizing material, which is an ion component introduced into the reverse osmosis membrane membrane filter 130, Permeates the first storage tank 210 through the sterilized water supply line 612 without passing through the membrane and the purified water passing through the filter membrane of the reverse osmosis membrane filter 130 flows through the purified water supply line 604 to the first storage tank (Not shown).

In the above description, the first drain valve 510 is provided in a plurality of intake ports, but it is also possible to configure a valve such as the passage switching valve 550 in one intake port as in the third embodiment .

<Sixth Embodiment>

12 is a view showing a configuration of a water treatment apparatus according to a sixth embodiment of the present invention. The sterilization module 300 is installed in the lower part of the first storage tank 210, As shown in FIG.

The first to fifth embodiments generate sterilized water using wastewater generated in the reverse osmosis membrane filter 130 and supply the sterilized water to the inside of the first storage tank 210 and the second storage tank 220 The sixth embodiment is similar to the sixth embodiment except that the waste water generated in the reverse osmotic membrane filter 130 is filled in the first storage tank 210 and then the sterilizing module 300 is operated to generate sterilized water .

A wastewater drainage line 611 is connected to the waste water outlet 133 of the reverse osmosis membrane filter 130 and the first storage tank 210 and the second storage tank 220 are connected by a connection line 621 And a wastewater supply line 623 connecting the wastewater discharge line 611 and the connection line 621. The wastewater supply line 623 is connected to the first storage tank 210 side, A wastewater supply valve 340 for controlling the supply of the wastewater is provided.

A shutoff valve 350 is installed at a position adjacent to the second storage tank 220 of the connection line 621 so that wastewater flows only into the first storage tank 210 and blocks the inflow of the wastewater into the second storage tank 220 do.

The first storage tank 210 includes an upper space 210a for storing the filtered water at room temperature and a lower plate 213 for storing cold water between the upper space 210a and the upper space 210a. And the water in the upper space 210a is not mixed with the water in the lower space 210b to pass through the connection line 621, And a connection passage 214 passing through the lower space 201b to be supplied to the second storage tank 220 through the connection passage 214. [

The sterilization module 300 may be installed on the connection line 621 connected to the lower side of the connection channel 214 to operate the sterilization module 300 so that the water stored in the first storage tank 210 The sterilization module 300 is operated to fill the wastewater generated by the reverse osmosis membrane filter 130 in the first storage tank 210 and to increase the concentration of the sterilizing material .

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

FIG. 13 is a view showing the operation state at the time of drainage in the water treatment apparatus according to the sixth embodiment of the present invention, FIG. 14 is a view showing a process of introducing wastewater into the water treatment apparatus according to the sixth embodiment of the present invention, FIG. 16 is a view showing a sterilizing water drainage process in the water treatment apparatus according to the sixth embodiment of the present invention, FIG. 17 is a view showing a sixth 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.

The raw water valve 150 and the sterilization module 300 and the wastewater supply valve 340 are in the off state and the shutoff valve 350 and the first drain valve 510 are closed, The second drain valve 520 operates to drain the water in the first storage tank 210 and the second storage tank 220 by operating the drain pump 530 in the On state, The first drain valve 510, the second drain valve 520, and the drain pump 530 are both turned off.

Also, in the case of the present embodiment, it is also possible to set a time for draining the draining completion time to a predetermined time or to detect the completion of drainage by sensing a difference in voltage / current at the drain pump 530, A separate sensor 551 such as a sensor or an infrared sensor may be provided to determine the completion time of the drainage.

14, the sterilization module 300, the shutoff valve 350, the first drain valve 510, the second drain valve 520, and the drain pump 520 are connected to each other, When the raw water valve 150 and the wastewater supply valve 340 are turned on, raw water is introduced into the reverse osmosis membrane filter 130 and purified water is filtered through the post-carbon filter 140 to the first storage tank 210. A portion of the wastewater that has not been filtered by the reverse osmosis membrane filter 130 is discharged to the outside through the wastewater regulator 540 and the wastewater drainage line 611, And flows into the first storage tank 210 through the waste water supply line 623 and the connection line 621.

When the wastewater flows into the first storage tank 210, the sterilizing water generation process proceeds. As shown in FIG. 15, all the valves 150, 340, 350, 510 and 520 are turned off, 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.

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. 16, the shutoff valve 350 is turned on before discharging the sterilized water to the outside 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 sterilized water in the upper space 210a of the first storage tank 210 is filled in the second storage tank 220 and the sterilized water in the lower space 210b is not introduced into the second storage tank 220 .

Meanwhile, the sterilization module 300 turns off the sterilization water immediately before the sterilization water is filled in the first storage tank 210 or just before the 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 water in the first storage tank 210 is filled in the second storage tank 220, the first drain valve 510 and the second drain valve The drain valve 520 is turned on and the drain pump 530 is operated to sterilize the sterilized water in the lower space 210b of the first storage tank 210 and the sterilized water in the second storage tank 220 to the outside Drain .

17, the raw water valve 150, the wastewater supply valve 340 and the shutoff valve 350 are turned on and the first drain valve 150 is opened, The first storage tank 210 and the second storage tank 220 may contain not only the purified water filtered through the filter unit 100 but also the reverse osmosis membrane The wastewater generated in the filter 130 is also filled.

When the rinse water inflow process is completed, the rinse water discharge process is performed. In the rinse water discharge process, the open state of each valve is the same as that of the purified water discharge process. The rinsing water in the first storage tank 210 and the second storage tank 220 is discharged to the outside by operating the drain pump 530 in a state where the second drain valve 520 and the second drain valve 520 are turned on, do.

When the rinse water draining process is completed, the water inflow process is performed. The opening state of each valve in the inflow process is the same as that of FIG. 17 except that the waste water supply valve 340 is off. 210 and the second storage tank 220 are filled up to the full water level, the sterilization mode is terminated.

In order to shorten the sterilization time, the sterilization module 300 may be operated simultaneously with the inflow of the wastewater, so that the inflow of wastewater and the generation of the sterilization water may be simultaneously performed.

<Seventh Embodiment>

FIG. 18 is a view showing a configuration of a water treatment apparatus according to a seventh embodiment of the present invention, in which a sterilizing module 300 is installed below a first storage tank 210 and sterilizing water generated in the sterilizing module 300 1 storage tank 210, as shown in FIG.

The present embodiment is different from the sixth embodiment in that a circulation line 624 for interconnecting the connection line 621 and the first storage tank 210 and a circulation line 624 for connecting the sterilization water in the first storage tank 210 The circulation line 624 is branched from the connection line 621 and connected to the first storage tank 210 through the connection line 621. The circulation line 624 is connected to the circulation line 624 through the connection line 621, To the lower space 210b.

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 circulation pump 360 is operated, Circulating the water in the first storage tank 210 through the first space 624 allows the concentrations of the sterilizing substances in the upper space 210a and the lower space 210b to be uniform.

A 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 shutoff valve 370 is turned off, 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.

<Experimental Results>

Fig. 19 is a configuration diagram for measuring the residual chlorine concentration 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.

The sterilization module 300 may be installed on the upstream side of the inlet 131 of the reverse osmosis membrane filter 130 or the sterilization module 300 may be installed downstream of the waste water outlet 133 of the reverse osmosis membrane filter 130, The residual chlorine concentration of the sterilized water generated by the sterilization module 300 is measured in a state where the sterilized water is generated using the wastewater which has not passed through the membrane filter 130, It is for this reason.

division tap water Sterilization module location Reverse Osmosis Membrane Filter Shear Reverse Osmosis Membrane Filter Residual chlorine (ppm) 0.15 0.87 1.06 0.13 0.92 1.01 0.17 0.84 1.12 Average 0.15 0.88 1.03

First, as shown in FIG. 19 (a), the sterilization module 300 is installed on the upstream side of the inlet 131 of the reverse osmosis membrane filter 130, and the residual chlorine The average concentration was 0.88 ppm.

19 (b), the sterilizing module 300 is installed at the downstream end of the waste water outlet 133 of the reverse osmosis membrane filter 130, and the waste water passing through the sterilizing module 300 The average concentration of residual chlorine was 1.03 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, in the case of the present invention, as shown in the above experimental results, the residual chlorine concentration can produce sterilized water having an average of 0.88 ppm or 1.03 ppm, and is sufficient to function as a 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, it is possible to minimize the waste of waste water by generating sterilized water by using the waste water generated from the reverse osmosis membrane filter, and by using the dissolved ionic material contained in the waste water, Sterilization module can be installed on the front side of the reverse osmosis membrane filter so that sterilizing material generated from the sterilizing module sterilizes the bacteria that have grown on the filter membrane of the reverse osmosis membrane filter, Lt; / RTI &gt; In addition, it is possible to sterilize the inside of the water intake line in the process of discharging the sterilization water, so that the area of the dead zone which is not sterilized inside the water treatment 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: reverse osmosis membrane filter
131: Inlet port 132:
133: waste water outlet 140: post carbon filter
150: raw water valve 200:
210: first storage tank 210a: upper space
210b: lower space 211: water level sensor
212: ball tower 213: separation plate
214: connecting passage 220: second storage tank
300: sterilization module 310,330: sterile water supply valve
320: water shutoff valve 340: waste water supply valve
350: shutoff valve 360: circulation pump
400: 410: First intake valve
420: second intake valve 500: drainage section
510: first drain valve 520: second drain valve
530: Drain pump 540: Wastewater regulator
550: flow path switching valves 601, 602, 603: raw water supply line
604: purified water supply line 611: waste water 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 take-off line

Claims (36)

delete A filter portion including a reverse osmosis membrane filter for filtering raw water;
A storage unit for storing the filtered water in the filter unit;
A sterilizing module for supplying sterilizing water to the storage part using wastewater discharged from the reverse osmosis membrane filter;
And a waste water drain line for discharging the waste water to the outside,
A sterilizing water supply line branched from the wastewater drainage line for supplying the sterilized water is connected to the storage unit;
Wherein a wastewater regulator is installed on the wastewater drainage line for limiting the amount of wastewater discharged to the outside. 3. The method of claim 2,
Wherein a sterilizing water supply valve is provided on the sterilizing water supply line for controlling the supply of sterilizing water passing through the sterilizing water supply line. 3. The method of claim 2,
Wherein the sterilizing module is installed on the sterilizing water supply line. 3. The method of claim 2,
Wherein the sterilizing module is installed at a front end of the inlet of the reverse osmosis membrane filter. 6. The method of claim 5,
The reverse osmosis membrane filter is connected to the inlet of the reverse osmosis membrane filter by a water supply line through which raw water is filtered and a sterilizing water line through which the sterilizing module is installed. And a valve for controlling the flow of the water. 3. The method of claim 2,
The storage unit is connected to a purified water supply line for supplying filtered water from the reverse osmosis membrane filter,
Wherein the purified water supply line and the sterilized water supply line are combined and connected to the storage unit. 8. The method of claim 7,
Wherein the purified water supply line and the sterilized water supply line are combined into one and connected to a ball tower that limits the water level of the storage unit. 3. The method of claim 2,
The storage unit is connected to a purified water supply line for supplying filtered water from the reverse osmosis membrane filter,
Wherein the purified water supply line is provided with a water shutoff valve for shutting off the supply of purified water through the purified water supply line when the sterilization module is operated. 3. The method of claim 2,
Wherein the first storage tank and the second storage tank are provided with 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, And drainage lines are connected to each other. 11. The method of claim 10,
Wherein the first drainage line is branched on a water intake line connecting between the first storage tank and the intake valve and connected to the waste water drainage line. 11. The method of claim 10,
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; Wherein a flow path switching valve is provided at a point where the first drain line and the water take-in line intersect to switch the discharge direction of the water supplied from the first and second storage tanks. 11. The method of claim 10,
Wherein a drain valve for controlling drainage of sterilized water is installed in each of the first drain line and the second drain line. 11. The method of claim 10,
Wherein a drain pump is provided to smooth drainage of sterilized water through the first drain line and the second drain line. delete delete delete delete delete delete delete a) draining the water in the reservoir where the filtered water is stored through the filter section;
b) sterilizing the sterilized water by supplying sterilized water to the storage unit using wastewater discharged from the reverse osmosis membrane filter of the filter unit;
c) draining the sterilized water inside the storage unit to the outside,
The wastewater discharged from the reverse osmosis membrane filter is drained to the outside through a wastewater drain line in a flow rate controlled by a wastewater regulator,
Wherein the sterilizing water is supplied to the storage part through a sterilizing water supply line branched from the waste water drainage line. 23. The method of claim 22,
Wherein the sterilizing water generated from the waste water outlet of the reverse osmosis membrane filter is supplied to the storage unit. 23. The method of claim 22,
Wherein the sterilizing material generated at a front end of the inlet of the reverse osmosis membrane filter is introduced into the reverse osmotic membrane filter and then discharged through a waste water outlet to the storage unit. 23. The method of claim 22,
Wherein the sterilized water is supplied by supplying purified water and unfiltered wastewater filtered in the reverse osmosis membrane filter together in the storage unit in the step b). 23. The method of claim 22,
Wherein the purified water in the reverse osmosis membrane filter in the step b) is not supplied to the storage part, but only the untreated wastewater from the reverse osmosis membrane filter is supplied to the storage part, thereby supplying sterilized water. Way. 23. The method of claim 22,
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 And determining that the sterilization water filled in the first storage tank and the second storage tank is a full water level. 23. The method of claim 22,
Characterized in that the water filtered in the reverse osmosis membrane filter is supplied to the reservoir through a purified water supply line 23. The method of claim 22,
Wherein the sterilized water is drained to the outside in step (c), and then the waste water discharged from the reverse osmosis membrane filter is supplied to the storage part to rinse the interior of the storage part. 23. The method of claim 22,
Wherein the disinfection water drain line through which the sterilizing water is drained is provided with a drain pump and detects the load variation in the drain pump to determine whether drainage is completed. delete delete delete 23. The method of claim 22,
Wherein the reverse osmosis membrane filter membrane is washed by a sterilizing material generated in a sterilizing module installed at a front end of an inlet of the reverse osmosis membrane filter. 23. The method of claim 22,
And sterilizing water discharged from the storage unit is discharged to the outside via a water intake line connecting the storage unit and the water intake valve. delete

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