KR101906287B1 - Water Purification Device With Automatic Management Function - Google Patents

Abstract

The present invention relates to a water purification device having an automatic management function. According to the present invention, the water purification device comprises: a raw water tank; a preprocessing filter removing foreign substances contained in raw water by being connected to the raw water tank; multiple membrane filters filtering filtered water preprocessed by the preprocessing filter for the filtered water to be the purified water and supplying the purified water to a water treatment tank; a sensor unit installed on an outlet side of the membrane filter and detecting the pressure and/or water flow rate of the purified water; a control unit preventing the inflow of filtered water by the one membrane filter in which a fouling phenomenon occurs, by determining the state of the membrane filter in accordance with a detection value detected by the sensor unit, wherein the control unit also enables the filtered water to flow into the other membrane filter; a cleaning unit reversely cleaning inner scale of the membrane filter in which the inflow of the filtered water is blocked by the control unit; and a wireless communication unit connected to the control unit and transmitting information on a determination result to an outer terminal. The cleaning unit comprises: an ozone gas supply unit and/or a supercritical gas supply unit; and a purified water supply pipe. So, the cleaning water in which two kinds of gas and liquid are mixed reversely cleans the inside of the membrane filter.

Description

[0001] Water purification device with automatic management function [

The present invention relates to a water purification apparatus having an automatic management function, and more particularly, to a purification apparatus capable of maintaining a purifying function through another membrane filter even if a fouling phenomenon occurs in a membrane filter for purifying raw water, The present invention relates to a water purification apparatus having an automatic management function that automatically detects a degree of purification of a membrane filter to be cleaned and automatically transmits a message to a manager whether the membrane filter is replaced or not.

In areas where water supply facilities are difficult to install because they are located far away from large water purification plants, water purification equipment that can purify water such as valleys, ground water or river water to use them as drinking water or living water has been used.

In such a water purification apparatus, a water filter for removing impurities contained in the raw water is used. When foreign substances are accumulated in the water filter, the capacity of the water to be treated is reduced.

A periodic filter cleaning method has been invented so as to increase the usable period of the water filter as much as possible, because the portion that occupies the most cost in maintenance of the water purification apparatus is the replacement cost of the water filter.

However, in the case of a conventional water purification apparatus that can be cleaned by a filter, since the filter is separated from the water purification apparatus and then cleaned, the operation of the water purification apparatus is interrupted, and the cleaning operation is very cumbersome. There have been many problems.

On the other hand, as a technique (filed), there is "Automatic filter flushing device of membrane filter of water purifier (Korean Registered Patent No. 0710872)".

Such a conventional flushing device is configured to remove the inner scale of the membrane filter by a double output or a raw water pressure of the raw water pressure.

However, such a flushing apparatus has a problem that it is not easy to remove by a high-pressure bubble liquid or a raw water pressure when a scale made of a three-dimensional structure, which is complex and tightly bonded by secretion substances (polysaccharides and proteins) .

Korean Patent No. 0710872

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is a first object of the present invention to provide a membrane filter for purifying raw water, which can maintain a purifying function through another membrane filter even if a fouling phenomenon occurs, The present invention provides a water purification apparatus having an automatic management function that allows the membrane filter having a fouling phenomenon to be automatically cleaned, and to automatically determine whether the membrane filter is cleaned and to replace the membrane filter with a manager automatically.

A second object of the present invention is to provide an apparatus and a method for controlling the concentration of chlorine in a purified water by automatically adjusting the concentration of chlorine in the purified water according to a purpose, In which water can be rapidly mixed by an automatic management function.

According to an aspect of the present invention for achieving the above object, there is provided a water purification apparatus having an automatic management function, comprising: a raw water tank for purifying water; A plurality of membrane filters for filtering the filtered water preliminarily processed through the preliminary treatment filter with purified water and supplying the purified water to the purification tank; and a plurality of membrane filters disposed on the inlet side and the outlet side of the membrane filter, A membrane filter for detecting the fouling of the membrane filter according to a detection value detected through the sensor unit and for blocking the introduction of the filtrate water, and the other membrane filter A cleaning unit for backwashing the inner scale of the membrane filter into which the filtered water is blocked by the control unit; And a wireless communication unit connected to the control unit and transmitting information about a determination result to an external terminal, wherein the cleaning unit comprises an ozone gas supply unit and / or a supercritical gas supply unit, and a purified water supply pipe, And the washing water mixed with the liquid backwashes the inside of the membrane filter.

The second invention is characterized in that, in the first invention, between the pre-treatment filter and the membrane filter, Ca and Mg dissolved in the filtration water and a water softener for softening the water are combined with the ionic resin so that the scale does not get caught in the membrane filter .

According to a third aspect of the present invention, in the first aspect of the present invention, the sensor unit further includes a water quality sensor and a temperature sensor provided on the discharge side of the membrane filter, in addition to the pressure sensor and the flow rate sensor.

In a fourth aspect of the present invention according to the third aspect of the present invention, the sensor unit further includes a chlorine sensor and a water level sensor disposed inside the septic tank.

The fifth invention is characterized in that, in the third invention, each of the membrane filters is covered with a heating jacket.

According to a sixth aspect of the present invention, in the fourth aspect of the present invention, there is further provided a chlorine mixing tank provided at the upper part of the purifying tank, for controlling the chlorine discharge amount according to the chlorine input amount calculated through the control part and supplying the chlorine discharge amount to the purification tank.

In a seventh aspect of the present invention according to the sixth aspect of the present invention, in the chlorine mixing tank, the lower part is formed into a hopper-shaped cylindrical shape, the chlorine reservoir is connected to the side part, and the supply pipe to which purified water is supplied is connected in the upper tangential direction, And a spiral vortex is formed by the purified water supplied in a tangential direction to the interior of the septic tank so that chlorine and purified water are rapidly mixed without a separate stirrer and the mixed water is quickly discharged to the inside of the septic tank without bottleneck.

According to an eighth aspect of the invention, in the first aspect, the ozone gas supply unit includes an air compressor for compressing air to generate high-pressure compressed air, an oxygen generator for separating oxygen from high-pressure compressed air supplied from the air compressor, And a plasma reactor for converting part of the oxygen supplied from the plasma reactor into ozone.

According to a ninth aspect of the present invention, in the first invention, in the first invention, the supercritical gas supply unit includes a fluid storage tank in which liquid carbon dioxide is stored, a cooler for subcooling liquid carbon dioxide in the fluid storage tank, Pressure state to a high-pressure state.

According to the water purification apparatus having the automatic management function of the present invention, even if a fouling phenomenon occurs in the membrane filter for purifying raw water, the purification function can be maintained through the other membrane filter.

In addition, scale formed by three-dimensional structures, which are complex and tightly bound by secretion substances (polysaccharides and proteins), can be easily removed through supercritical gas and high-pressure ozone gas.

In addition to being able to prevent freezing of the membrane filter in the winter season, it is also possible to wirelessly transmit the malfunctioning of the membrane filter, such as cleaning, exchange cycle, electrical system, It is effective.

 Also, the chlorine concentration of the purified water can be automatically adjusted according to the purpose according to the purpose, and when the chlorine is mixed into the inside of the septic tank, it can be rapidly mixed using the spiral vortex so that a separate stirrer is not necessary.

1 is a configuration diagram of a water purification apparatus having an automatic management function according to a first embodiment of the present invention;
2 is a block diagram of a water purification apparatus having an automatic management function according to the first embodiment of the present invention;
Fig. 3 is a detailed configuration diagram of the washing section extracted in Fig. 1,
4A and 4B are operation diagrams of a water purification apparatus having an automatic management function according to the first embodiment of the present invention;
5 is a configuration diagram of a water purification apparatus having an automatic management function according to a second embodiment of the present invention;
FIG. 6 is a detailed configuration diagram of the chlorine mixing tank extracted in FIG. 5;
FIG. 7 is a detailed configuration diagram of a purified water tank combined with the chlorine mixing tank extracted in FIG. 5; FIG.
8 is a perspective view of another embodiment of a chlorine mixing tank.
9 is a cross-sectional perspective view of another embodiment of a chlorine mixing tank.
10A and 10B are a side view and a "AA" partial cross-sectional view of another embodiment of a chlorine mixing tank.
11A and 11B are a top view and another cross-sectional view of a portion "BB" of another embodiment of a chlorine mixing tank.
12 is a side view showing a twist plate.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms.

Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The embodiments described and exemplified herein also include their complementary embodiments.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprise" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to provide a more detailed description of the invention. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some cases, it should be mentioned in advance that it is common knowledge in describing an invention that parts not significantly related to the invention are not described in order to avoid confusion in explaining the present invention.

Hereinafter, a water purification apparatus having an automatic management function according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of the water purification apparatus having an automatic management function according to the first embodiment of the present invention, and FIG. 3 is a block diagram of the water purification apparatus having an automatic management function according to the first embodiment of the present invention. 1 is a detailed configuration diagram of the washing section extracted in Fig.

As shown in FIGS. 1 to 3, the present invention can be applied to a membrane filter for purifying raw water, in which a purifying function is maintained through another membrane filter even if a fouling phenomenon occurs, The present invention relates to a water purification apparatus having an automatic management function that automatically detects the degree of purification of a membrane filter and automatically transmits a replacement status to a manager wirelessly.

Further, the present invention relates to a water purification apparatus having an automatic management function, which is capable of preventing deterioration of the purification function due to freezing of a winter season membrane filter.

The water purifier having the automatic management function of the present invention is composed of seven parts including a pretreatment filter 20, a membrane filter 40, a sensor part 60, a control part 80, a cleaning part 70, And a wireless communication unit 90.

The pretreatment filter 20 functions to filter impurities of large particles contained in the raw water and various suspended substances by receiving the raw water stored in the raw water tank 10.

The membrane filter 40 filters the pre-treated filtered water through the pre-filter 20 and supplies the filtered water to the septic tank 50.

Between the pretreatment filter 20 and the membrane filter 40, Ca and Mg dissolved in the filtration water and a water softener for softening the water by binding with the ionic resin so as to prevent scale from being trapped inside the membrane filter 40 30 can be further combined to extend the service life of the membrane filter 40. [

In addition, a plurality of the membrane filters 40 are arranged in parallel. Separate membrane filters 40 may be connected in series to the membrane filters 40 arranged in parallel to increase the purification efficiency.

Each of the membrane filters 40 is connected to a membrane filter 40 through a solenoid valve SV provided on the inlet side and the outlet side of the membrane filter 40 and filtered water is supplied to the other membrane filter 40 And the washing water is circulated at the same time.

A sensor unit (pressure sensor, flow rate sensor) disposed on the inlet side and the outlet side of each membrane filter 40 to detect the pressure and / or flow rate of the purified water; The control unit 80 controls the circulation of the purified water and the wash water.

That is, the controller 80 controls the membrane filter 40 in which the fouling phenomenon occurs due to the detection value of the sensor unit 60 to block the inflow of the filtrate water, and the other membrane filter 40 flows the filtrate water So that the purifying function is maintained.

Here, the membrane filter 40 in which the filtration water is blocked by the control unit 80 is backwashed by the cleaning unit 70 during the rest period.

The cleaning unit 70 includes an ozone gas supply unit 71 and / or a supercritical gas supply unit 72 and a purified water supply pipe 73.

The ozone gas supply unit 71 includes an air compressor 711 for compressing air to generate high-pressure compressed air, an oxygen generator 712 for separating oxygen from high-pressure compressed air supplied from the air compressor 711, And a plasma reactor 713 for converting part of the oxygen supplied from the oxygen generator 712 to ozone.

The high-pressure oxygen and ozone discharged from the ozone gas supply unit 71 are mixed with the purified water discharged from the purified water supply pipe 73 connected to the purification tank 50, and are converted into two developer / liquid. Then, the gas / liquid flows back into the discharge side of the membrane filter 40 in which the fouling is generated, thereby performing the sterilization function together with the scale removal in the membrane filter 40. The contaminated water containing the scale is supplied to the solenoid valve SV To the water supply side of the membrane filter 40 through the water discharge pipe 74, which is separately connected to the water supply side of the membrane filter 40.

Separately, the supercritical gas supply unit 72 includes a fluid storage tank 721 in which liquid carbon dioxide is stored, a cooler 722 that supercools the liquid carbon dioxide in the fluid storage tank 721, (A critical temperature (TC = 30.978 ° C) and a critical pressure (PC = 73.8 bar)).

The supercritical gas supply unit 72 converts the supercooled fluid passing through the cooler 722 into a fluid having a high pressure exceeding the critical pressure and supplies the fluid to the inside of the membrane filter 40 where the fouling is generated. This is possible by adjusting the opening degree of the solenoid valve SV installed on the inlet side of the membrane filter 40. At this time, the scale removal of the membrane filter 40 is performed by supplying a pressure of about 95 to 210 bar and a flow rate of about 8 to 20 mg / min through a solenoid valve SV whose opening degree is controlled.

At this time, the cleaning unit 70 selects either the ozone gas supply unit 71 or the supercritical gas supply unit 72 to backwash the inside of the membrane filter 40 together with the purified water, or the ozone gas supply unit 71 and the supercritical gas supply unit 72 to mix the purified water with the supernatant gas supply unit 72 to backwash the interior of the membrane filter to enhance the cleaning effect.

The sensor unit 60 may further include a water quality sensor 63 and a temperature sensor 64 provided on the discharge side of the membrane filter in addition to the pressure sensor 61 and the flow sensor 62 .

Accordingly, even if the scale of the membrane filter 40 is removed, it is possible to transmit to the manager whether or not to replace the membrane filter 40 when the standard flow rate, the pressure and the purifying function of the purified water are insufficient, can do.

This is possible by the wireless communication unit 90 which is electrically connected to the control unit 80 and transmits information on the judgment result to the external terminal 91.

Each of the membrane filters 40 may be constructed by externally heating the heating jacket 41 controlled by the controller 80. The heating jacket 41 may include a heating wire inside thereof or a Peltier element .

This is because the controller 80 controls the flow rate of the purified water flowing through the membrane filter 40 when the flow rate and the pressure of the purified water passing through the winter season membrane filter 40 are lower than the reference value and the external temperature detected by the temperature sensor 64 is lower. 40 are frozen and the heating jacket 41 is operated to prevent the membrane filter 40 from freezing.

Hereinafter, the operation of the water purification apparatus having the automatic management function according to the first embodiment of the present invention will be briefly described.

4A and 4B are operation diagrams of a water purification apparatus having an automatic management function according to the first embodiment of the present invention.

4A, the raw water in the raw water tank 10 is filtered through the pretreatment filter 20 and the water softener 30, and the filtered water is supplied to the membrane filter 40.

Here, the filtration water is supplied to one of the membrane filters 40 and the rest of the membrane filter 40 has a rest time.

And the purified water filtered by the membrane filter 40 is supplied to the purification tank 50 through a series of processes.

When the pressure and the flow rate of the purified water purified by the membrane filter 40 are lower than the reference value, the controller 80 determines that the membrane filter 40 has caused the fouling phenomenon and outputs the solenoid valve SV, So that the filtration water is circulated through the membrane filter 40 having a rest period to maintain the purifying function.

At the same time, the membrane filter 40 in which the fouling is generated blocks the filtered water and allows the washing water in the washing unit 70 to flow in the reverse direction.

After backwashing, only the purified water is circulated backward to continue backwashing when the pressure and the flow rate of the membrane filter 40 fall below the reference value, and if satisfactory, the washing is completed.

At this time, the membrane filter 40 in which the fouling phenomenon occurs is repeated several times over several hours. The washing time may vary depending on the quality of the raw water and the size of the membrane filter.

When the membrane filter is cleaned, it has a resting time. If the resting time is prolonged, it can be set to be backwashed automatically every several weeks to prevent bacterial growth of the membrane filter.

Information on the determination result by the control unit 80 is transmitted to the external terminal 91 of the external manager through the wireless communication unit 90 and is automatically managed.

In addition, even if the scale of the membrane filter 40 is removed, if the water quality measurement value by the water quality sensor 63 is lower than the reference value, whether or not the membrane filter 40 is replaced is sent to the manager to replace the membrane filter 40 .

Herein, the information received by the external terminal 91 may include not only cleaning and replacement cycles of the membrane filter, but also malfunctions of the apparatus such as the electric system and the clogging in the pipe.

On the other hand, in FIG. 4B, when the changed membrane filter generates fouling again, the purified water is re-introduced into the membrane filter having the dwell period after the washing, and the backwashing process is automatically performed in the membrane filter in which the fouling is generated .

FIG. 5 is a configuration diagram of a water purification apparatus having an automatic management function according to a second embodiment of the present invention, FIG. 6 is a detailed configuration diagram of the chlorine mixing tank extracted in FIG. 5, FIG. 2 is a detailed view of a septic tank incorporating a mixing tank; FIG.

5 to 7, the water purifier having the automatic management function according to the second embodiment includes the first embodiment, and is configured such that the chlorine concentration of the purified water can be automatically adjusted according to the reference value, ) And the purified water containing chlorine are mixed so that they can be rapidly mixed by a spiral vortex without a separate stirrer.

To this end, the sensor unit 60 of the water purification apparatus having the automatic management function of the second embodiment includes a chlorine sensor 65 disposed inside the septic tank 50 for detecting residual chlorine, a water level sensor 66 for sensing the internal water level, .

The purifying tank 50 further comprises a chlorine mixing tank 53 for adjusting the amount of chlorine discharged from the chlorine storage tank according to the chlorine input amount calculated through the controller 80 and supplying the adjusted chlorine to the purification tank 50.

The chlorine input amount of the controller 80 is calculated by the total water amount of the purified water in the purification tank by the water level sensor 66 and the residual chlorine value by the chlorine sensor 65 and the flow rate of the purified water purified through the membrane filter 40 Is determined by the flow rate value of the flow rate sensor 62.

The chlorine mixing tank 53 is connected to the chlorine storage tank 52 at the side thereof and a supply pipe 531 through which the purified water is supplied in the upper tangential direction .

In this configuration, purified water is supplied in the tangential direction of the chlorine mixing tank 53 to form spiral vapors in the inside of the chlorine mixing tank 53, and in proportion to the speed increase of the spiral vapors thus formed, The internal pressure is lowered and the chlorine stored in the chlorine storage container 52 is automatically discharged by the negative pressure. This configuration is a constitution as long as the mixed water can be discharged quickly without bottleneck due to the spiral vortex.

In addition, a spiral baffle 532 is formed on the inner circumferential surface of the chlorine mixing tank 53 to accelerate the spiral vapors and increase the internal residence time, thereby further improving the mixing effect of chlorine and purified water .

In addition, a conical vortex induction rod 51 is fixed on the bottom surface of the septic tank 50 on a vertical line of the chlorine mixing tank 53.

In this configuration, when mixed water discharged from the chlorine mixing tank 53 is supplied into the interior of the septic tank 50, spiral vortices are maintained along the vortex induction rods 51 in the septic tank 50, .

In connection with the above, the chlorine mixing tank 53 may be configured as another embodiment as shown in FIGS. 8 to 12 so that the purified water and the chlorine are more easily mixed.

In another embodiment of the chlorine mixing tank 53, a supply pipe 531 to which purified water is supplied is connected in a tangential direction on one side, a chlorine supply pipe 521 connected to the chlorine storage container 52 is connected to the upper side, A second housing 534 protruding from an inner upper surface of the first housing 533 and a second housing 534 coupled to the inner lower surface of the first housing 533 in a direction perpendicular to the first housing 533, (Not shown) formed in a spiral shape between the first housing 533 and the second housing 534 to form a first mixing channel (not shown) A baffle 536 and a second baffle 537 formed in a spiral shape between the second housing 534 and the third housing 535 to form a second mixing passage (not shown) 535) to form a third mixing channel (not shown), and includes a mix member 538 composed of a plurality of twist plates 538a The one characterized in that configuration.

That is, when the purified water is supplied to the supply pipe 531, the chlorine mixed tank 53 is supplied with chlorine stored in the chlorine reservoir 52 by the negative pressure through the chlorine supply pipe 521, The second mixing channel is mixed with the second mixing channel and then mixed with the third mixing channel so that mixing of the purified water and chlorine is efficiently performed.

In addition, the first housing 533 has a semi-spherical lower portion. The lower portion of the first housing 533 has a hemispherical shape so that mixed water (hereinafter referred to as " mixed water "Quot; number ") is sufficiently mixed by the vortex phenomenon in the lower part.

In addition, the first housing 533 may further include a drain valve (not shown) installed on a lower side of the lower housing 533. The drain valve may be remotely opened and closed by a control unit, The mixing flow with the purified water is sufficient even with the first mixing flow path, so that the purified water can be discharged quickly by opening it if necessary.

The third housing 535 may further include a mixing portion 535a having a reduced diameter at a middle portion of the third housing 535. The mixing member 538 is formed only inside the mixing portion 535a The mixing unit 535a increases the flow rate of the mixed water and at the same time, the mixed water is finally mixed by the twist plate 538a of the mix member 538 to realize the effect of further facilitating the mixing . In addition, the twist plate 538a of the mix member 538 is an element used in a conventional static mixer, and a detailed description thereof will be omitted.

At this time, when the mixed water flows into the third housing 535 after passing through the second mixing passage, that is, between the second housing 534 and the third housing 535, And the mixed water that has been rotated along the second mixing passage forms a vortex in the upper portion of the inside of the third housing 535, so that the mixing water of the first housing 533 After the lower part, the effect of mixing purified water with chlorine can be obtained again.

In addition, since the mixing space 535a also expands and narrows the inner space of the second housing 534, the mixed water passing through the second mixing passage 535 flows to the upper portion of the third housing 535, So that the mixed water can smoothly move to the upper portion of the third housing 535.

That is, the chlorine mixing tank 53 of another embodiment is rotated through the first mixing channel to induce the purified water and chlorine to be properly mixed, and thereafter, they are firstly mixed at the lower portion of the first housing 533, The mixture is then secondarily mixed in the upper portion of the inner portion of the third housing 535 and then mixed in the third portion 535a of the third housing 535 in the third mixing portion 535a, So that purified water and chlorine can be sufficiently mixed.

As described above, the water purifier having the automatic management function according to the first and second embodiments of the present invention does not refer to the pump. However, it can be installed on the inlet side and the discharge side of the membrane filter, can do.

It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention so that various equivalents And variations are possible.

10: Fuel tank
20: Pretreatment filter
30: Water softener
40: Membrane filter 41: Heating jacket
50: septic tank 51: vortex induction rod 52: chlorine reservoir
53: chlorine mixing tank 531: supply pipe
532: Baffle
60: sensor part 61: pressure sensor 62: flow sensor
63: water quality sensor 64: temperature sensor
65: chlorine sensor 66: water level sensor
70: cleaning section 71: ozone gas supply section 711: air compressor
712: Oxygen generator 713: Plasma reactor
72: supercritical gas supply part 721: fluid storage tank
722: cooler 723: compressor
73: purified water supply pipe 74: wash water discharge pipe
80:
90: wireless communication unit 91: external terminal
SV: Solenoid valve

Claims (9)

A raw water tank (10);
A pretreatment filter (20) connected to the raw water tank (10) to remove foreign substances contained in raw water;
A plurality of membrane filters (40) for filtering the filtered water pretreated through the pretreatment filter (20) with purified water and supplying the purified water to a septic tank (50);
A sensor unit 60 disposed on the inlet side and the outlet side of the membrane filter 40 to detect the pressure and / or flow rate of the purified water;
One of the membrane filters 40, which has determined the fouling of the membrane filter 40 according to the detection value detected through the sensor unit 60 and has generated the fouling phenomenon, blocks the flow of the filtrate water, The filter includes a control unit (80) for introducing filtered water;
A cleaning unit 70 for backwashing the inner scale of the membrane filter 40 from which the filtered water is blocked by the controller 80; And
And a wireless communication unit (90) connected to the control unit (80) and transmitting information on the determination result to the external terminal (91)
The cleaning unit 70 includes an ozone gas supply unit 71 and / or a supercritical gas supply unit 72 and a purified water supply pipe 73. The cleaning water is supplied to the inside of the membrane filter Back wash,
The ozone gas supply unit 71 includes an air compressor 711 for compressing air to generate high-pressure compressed air, an oxygen generator 712 for separating oxygen from high-pressure compressed air supplied from the air compressor 711, And a plasma reactor (713) for converting part of the oxygen supplied from the oxygen generator (712) into ozone.
The method according to claim 1,
Between the pretreatment filter 20 and the membrane filter 40 is provided a water softener 30 for softening water by binding Ca and Mg dissolved in the filtration water with the ionic resin so that the scale is not caught in the membrane filter 40, Wherein the water pump is connected to the water pump.
The method according to claim 1,
The sensor unit 60 further includes a water quality sensor 63 and a temperature sensor 64 provided on the discharge side of the membrane filter in addition to the pressure sensor 61 and the flow sensor 62. [ Function.
The method of claim 3,
Wherein the sensor unit (60) further comprises a chlorine sensor (65) and a water level sensor (66) disposed inside the septic tank (50).
The method of claim 3,
Wherein each of the membrane filters (40) has a heating jacket (41) enclosed therein.
5. The method of claim 4,
And a chlorine mixing tank 53 connected to the upper portion of the purifying tank 50 for controlling the amount of chlorine discharged according to the amount of chlorine calculated through the controller 80 and supplying the chlorine to the purifying tank 50. [ Water purification device with automatic management function.
The method according to claim 6,
The chlorine mixing tank 53 is formed in a cylindrical shape having a lower portion in the form of a hopper, a chlorine storage container 52 is connected to the side portion, a supply pipe 531 to which purified water is supplied in the upper tangential direction, So that the mixed water can be rapidly discharged into the inside of the septic tank 50 without being bottlenecked, and the chlorine and the purified water can be rapidly mixed with each other without any separate stirrer, Water purification device with management function.
delete The method according to claim 1,
The supercritical gas supply unit 72 includes a fluid storage tank 721 in which liquid carbon dioxide is stored, a cooler 722 that supercools the liquid carbon dioxide in the fluid storage tank 721, and a supercritical gas supply unit 722 that exceeds the critical temperature and pressure of the supercooled liquid carbon dioxide And a compressor (723) for converting the high-pressure state into the high-pressure state.

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