KR20110045847A - Water treatment apparatus for mitigation of biofouling - Google Patents

Abstract

PURPOSE: A water treatment apparatus for the reduction of bio-fouling is provided to enhance the purification capacity of water by removing microorganisms from the surface of a filter using plasma. CONSTITUTION: A water treatment apparatus for the reduction of bio-fouling comprises the following: a water tank housing(110) including an inlet(113) and an outlet(114); a filter(120) formed with a metal material, and located in between the inlet and the outlet; a power applying electrode(130) mounted on the water tank housing closely to the filter; a power supply unit(140) supplying the current to the power applying electrode; and a grounding line(150) connected to the filter.

Description

Water treatment apparatus for mitigation of biofouling}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment device, and more particularly, to a device for suppressing or reducing scale and biofouling generated in a tube such as a biological process or a water purifier. The present invention relates to a water treatment apparatus for reducing biofouling.

Many methods have been proposed to date to purify water.

The most common method is to filter using a filter.

In the case of filtration using a filter, a biofouling phenomenon occurs in which microorganisms and the like adhere and proliferate on the surface of the filter, resulting in a deterioration of water purification ability.

In order to solve this problem, various methods such as using ozone, ultraviolet rays, or using chemicals have been proposed.

The method using ozone has no residual effect of ozone, which is likely to cause secondary pollution, is expensive to process, is difficult to treat large volumes, and has a problem of corrosion of a tank, that is, a tank housing by ozone.

The method using ultraviolet light is not only effective for some organisms, but also has a shortcoming wavelength so that it is difficult to perform a good function in a cloudy state.

The method using chemicals is not environmentally friendly and there is a limit to the removal of microorganisms.

Recently, a method of water treatment using pulsed plasma has been developed.

1 is a structural diagram of a conventional underwater pulsed plasma processing apparatus, and FIG. 2 is an operating configuration diagram of FIG. 1.

As shown in FIG. 1 and FIG. 2, the conventional quartz crystal plasma processing apparatus 13 includes an air layer for generating a power source 21 for generating pulse power and a pulse power generated from the power source 21. And an electrode unit 22 for discharging in the water including water or air bubbles, and a plasma processing unit 23 for removing the microorganisms in the water through the plasma generated by the electrode unit 22.

When the seawater flows into the plasma processing unit 23 through the inflow end, the power applied from the power supply unit 21 is delivered to the air layer on the water surface or the air bubbles in the water through the discharge tip of the electrode unit 22 to the seawater. By generating a pulsed plasma within the shock wave, bubbles, ultrasonic waves, high-voltage electric field, etc. are generated to sterilize plankton and bacteria.

However, such a conventional modified pulsed plasma processing apparatus has a disadvantage in that the purification power of water for foreign substances other than microorganisms is reduced because only plasma is used, and dead microorganisms are leaked as they are.

The present invention, by filtering the microorganisms or foreign matters using a filter and at the same time to remove the microorganisms attached to the surface of the filter by using a plasma, to reduce the biofouling and increase the purifying power of the water for reducing biofouling The object is to provide a water treatment apparatus.

In order to achieve the above object, the water treatment apparatus for reducing biofouling of the present invention comprises: a water tank housing having an inlet formed at one end thereof and an outlet formed at the other end thereof; A metal filter mounted to the tank housing and disposed between the inlet and the outlet; A power supply electrode disposed adjacent to the filter in the tank housing; A power supply device connected to the power supply electrode to supply a current; Consists of a ground line connected to the filter, the plasma is generated between the power applying electrode and the filter by the current supplied to the power supply device to remove the deposits attached to the filter.

The filter is made of titanium having fine pores, and the inlet and the outlet are communicated by the pores formed in the filter.

The power applying electrode is disposed between the inlet and the filter.

The filter has a plate shape and is disposed obliquely in the water tank housing, and the bottom surface of the filter faces the liquid flowing through the inlet, and the top surface of the filter faces the liquid passing through the filter.

The tank housing may include a flow path forming member having an inlet formed at one end thereof and an outlet formed at the other end thereof; It is mounted to the lower portion of the flow path forming member and consists of a filtration unit for communicating the inlet and outlet, the filter is formed in a cylindrical shape with an open top is coupled to the flow path forming member inside the filtration unit.

The flow path forming member has an assembly portion in which the filter is mounted, formed at the outlet, and the filter has an open upper end coupled to the assembly portion so that the inside of the filter communicates with the outlet.

The filtration unit is detachably coupled to the flow path forming member, and threads are formed at the upper end of the assembly unit and the filter, respectively, and are screwed together.

The power applying electrode is disposed between an outer circumferential surface of the filter having a cylindrical shape and an inner circumferential surface of the filtration unit.

A discharge port opening and closing by a drain valve is formed at a lower portion of the water tank housing, and a lower portion of the water tank housing is formed to be inclined downward toward the discharge hole.

The tank housing may include a flow path forming member having an inlet formed at one end thereof and an outlet formed at the other end thereof. The power supply electrode may have a hollow hollow cylinder shape having an open upper portion, and may be mounted below the flow forming member. An inlet and an outlet communicate with each other, and the filter is formed in a cylindrical shape with an open top, and is coupled to the flow path forming member inside the power applying electrode.

The power supply electrode and the filter are to be concentric circles having the same center and different diameters.

According to the water treatment apparatus for reducing biofouling of the present invention as described above has the following effects.

The present invention not only generates plasma in the fluid, but primarily filters foreign substances and / or microorganisms by the filter, and sterilizes microorganisms that are filtered and adhered to the surface of the filter by plasma. Purification ability is better.

In particular, in the prior art, the plasma was continuously generated in order to eradicate the microorganisms in the flowing fluid, but the energy consumption was large. However, the present invention filters the microorganisms in the filter, so that the microorganism is sterilized even if the plasma is generated at regular intervals. It is possible to reduce the energy consumption than conventional.

In addition, in order to generate plasma, (+) electrode and (-) electrode are required. In the present invention, the (-) electrode is used as the filter made of metal, so that the filter performs not only a filter role but also an electrode role. The number of parts can be reduced.

First embodiment

3 is a perspective view of a water treatment apparatus according to a first embodiment of the present invention, and FIG. 4 is a side structural view of the water treatment apparatus according to the first embodiment of the present invention.

3 and 4, the water treatment apparatus of the present embodiment, the water tank housing 110, the filter 120, the power supply electrode 130, the power supply device 140, the ground line ( 150).

The water tank housing 110 has an inlet port 113 formed at one end thereof, and an outlet port 114 formed at the other end thereof.

A discharge port 118 that is opened and closed by the drain valve 119 is formed below the water tank housing 110.

In addition, the lower portion of the water tank housing 110 is formed to be inclined downward toward the discharge port 118, so that foreign matters in the fluid can be easily moved to the discharge port 118, as will be described later.

In the present embodiment, the tank housing 110 is formed in a rectangular shape, but may be formed in various shapes without being limited to such a shape.

The filter 120 is for filtering foreign substances and / or microorganisms in the fluid, and is disposed between the inlet port 113 and the outlet port 114 in the water tank housing 110 and is made of a metal material. .

At this time, the filter 120 is preferably made of titanium having fine pores.

That is, the filter 120 may be manufactured by molding titanium particles by a sintering method or coating by plasma spraying.

Titanium oxide is known to adsorb and remove nitrogen oxides (NO _X ), sulfur oxides (SO _X ), chlorine compounds, toxic organic substances, unburned hydrocarbon compounds, and the like contained in the atmosphere or water.

The inlet 113 and the outlet 114 are in communication with each other by the micropores formed in the filter 120.

The filter 120 according to the present embodiment has a plate shape and is disposed diagonally, that is, obliquely, in the water tank housing 110.

The filter 120 is divided into an upper part and a lower part of the water tank housing 110.

The lower surface of the filter 120 faces the liquid flowing through the inlet 113, and the upper surface of the filter 120 faces the liquid that has passed through the filter 120.

That is, the lower surface of the filter 120 is disposed obliquely in the direction of the inlet port 113, and the upper surface of the filter 120 is obliquely arranged in the direction of the outlet port 114.

Thus, foreign matter or microorganisms contained in the liquid introduced into the water tank housing 110 through the inlet 113 hits the lower surface of the filter 120 which is arranged obliquely and naturally falls down by gravity. .

The power applying electrode 130 is used to generate plasma together with the filter 120, and is disposed adjacent to the filter 120 in the water tank housing 110.

The power applying electrode 130 is disposed between the inlet 113 and the filter 120, and becomes a (+) electrode.

The power supply device 140 is connected to the power applying electrode 130 to supply a current.

The ground line 150 is connected to the filter 120, so that the filter 120 is a (-) electrode.

Hereinafter, the operation of the present embodiment having the above-described configuration will be described.

In the state in which the drain valve 119 is locked, raw water is introduced into the water tank housing 110 through the inlet port 113.

The raw water introduced into the water tank housing 110 through the inlet 113 is filtered by the filter 120 and then purified and discharged through the outlet 114.

When the fluid moves from the water tank housing 110 to the outlet 114, foreign substances and microorganisms contained in raw water are filtered by the filter 120 made of titanium and attached to the surface of the filter 120. .

At this time, the filter 120 is disposed obliquely, and the filtered foreign matter and microorganisms hit the lower surface of the filter 120, the foreign matter and microorganisms are dropped toward the outlet 118 by gravity. .

Some of the microorganisms filtered by the filter 120 is attached to the surface of the filter 120 to cause a biofouling phenomenon.

In this case, the power supply device 140 supplies power to the power applying electrode 130.

Then, the power applying electrode 130 becomes a (+) electrode, and the filter 120 connected by the ground line 150 becomes a (-) electrode.

As the power is applied to the power supply electrode 130, a pulse spark plasma is generated between the filter 120 and the power supply electrode 130, which causes the surface of the filter 120 as well as the microorganisms in the fluid. All deposits, such as microorganisms attached to it, can be removed.

The present embodiment not only generates plasma in the fluid, but primarily filters foreign substances and / or microorganisms by the filter 120 and secondarily filters the microorganisms attached to the surface of the filter 120. It is more effective because it is sterilized using plasma.

In particular, in the related art, the plasma was continuously generated in order to eradicate the microorganisms in the flowing fluid, but the energy consumption was large. However, the present invention filters the microorganisms in the filter 120. Microorganisms can be sterilized to reduce energy consumption than before.

In addition, in order to generate a plasma, a positive electrode and a negative electrode are required. In the present invention, the filter 120 serves as the filter 120 by using the negative electrode as the metal filter 120. In addition, the number of parts can be reduced by performing an electrode role as well.

When the water treatment apparatus is used for a long time, a biofouling phenomenon in which microorganisms are attached to the surface of the filter 120 may occur, and the present invention removes the microorganisms attached to the surface of the filter 120 by plasma, thereby causing biofouling. The ring can be restrained or reduced so that it can be used longer without frequent replacement of the filter 120.

In addition, the present invention is environmentally friendly because it does not use a separate chemical to suppress or reduce biofouling.

On the other hand, the foreign matter and dead microorganisms dropped to the outlet 118 by the filter 120 and the plasma as described above, is discharged to the outside by opening the drain valve 119 at regular time intervals.

In addition, when the filter 120 is to be replaced, the water tank housing 110 is separated, and then the filter 120 disposed in the water tank housing 110 is replaced and mounted to replace the filter 120. It can be easy to replace.

Of course, the tank housing 110 should be able to be separated into a plurality.

The water treatment apparatus of the present invention as described above can be applied to a cogeneration plant, a household water purifier, an industrial water treatment facility, and the like, which filter water using the filter 120.

The present invention can be used to save enormous amounts of water in the process of purifying water in the power plant industry using cooling towers and high concentrations.

In addition, in industries using cold water in heat exchangers (eg refrigeration systems), higher heat transfer effects can be achieved by low fouling formation of mineral crystals, bacteria or other particulates on the heat exchange surface.

Second embodiment

5 is a side structural view of a water treatment device according to a second embodiment of the present invention.

As shown in FIG. 5, the water treatment apparatus of the present embodiment includes a water tank housing 210, a filter 220, a power supply electrode 230, a power supply 240, a ground line 250, and the like. Is done.

The tank housing 210 may include: a flow path forming member 211 having an inlet 213 formed at one end thereof and an outlet 214 formed at the other end thereof; It is mounted to the lower portion of the flow path forming member 211 is composed of a filter portion 212 for communicating the inlet 213 and the outlet 214.

The inlet 213 and the outlet 214 are each bent downward from the flow path forming member 211.

That is, in the present embodiment, the inlet 213 is formed in a '┓' shape, and the outlet 214 is formed in a '┏' shape.

In addition, valves 216 and 217 are mounted at the first end of the inlet 213 and the end of the outlet 214, respectively.

The filter portion 212 has a cylindrical shape having an upper portion open and an empty space therein.

The filter part 212 has an open upper portion mounted to a lower portion of the flow path forming member 211 to communicate the inlet 213 and the outlet 214.

That is, the inlet 213 and the outlet 214 communicate with each other through an empty space formed inside the filter 212.

The filter unit 212 is preferably to be detachably mounted to the flow path forming member 211.

A discharge port 218 is formed at a lower center of the filtration unit 212, and a drain valve 219 is connected to the discharge port 218 so that the discharge port 218 is opened and closed by the drain valve 219. do.

The inner lower portion of the filtration unit 212 is formed to be inclined downward toward the outlet 218, so that foreign matter in the fluid can be more easily moved to the outlet 218 as described below.

The filter 220 is for filtering foreign substances and / or bacteria in the fluid, and is coupled to the flow path forming member 211 in a state of being disposed inside the filtration unit 212.

The filter 220 is coated by treating titanium with sintering, and many fine pores are formed.

The filter 220 is formed in a cylindrical shape having an open top and an empty space therein, and is detachably mounted to a lower portion of the flow path forming member 211.

In order to allow the filter 220 to be mounted in the flow path forming member 211, an assembly part 215 is formed at the first end of the outlet 214, and an upper end of the filter 220 is the assembly part 215. Removably coupled to).

Thus, the inside of the filter 220 is in communication with the outlet 214, the fluid introduced into the filter unit 212 through the inlet 213 is filtered by the filter 220 and then It is discharged to the outside through the outlet 214.

In order to detachably couple the filter 220 to the assembly unit 215, a screw thread is formed at each of the upper ends of the assembly unit 215 and the filter 220 to be screwed together.

In addition, the filtration unit 212 and the filter 220 to form a center concentric shape, the outlet 218 is to be arranged in the same vertical line with the center of the filter 220.

For this reason, when the foreign matter, etc. attached to the surface of the filter 220 falls, it can be more easily moved to the outlet 218.

The power applying electrode 230 is used to generate plasma together with the filter 220, and is disposed adjacent to the filter 220 in the filtration unit 212.

The power applying electrode 230 is disposed between the outer circumferential surface of the filter 220 and the inner circumferential surface of the filtration unit 212 having a cylindrical shape, and becomes a (+) electrode.

The power supply device 240 is connected to the power applying electrode 230 and serves to supply a current.

The ground line 250 is connected to the filter 220, so that the filter 220 is a (-) electrode.

Hereinafter, the operation of the present invention having the above-described configuration will be described.

In the state in which the drain valve 219 is locked, raw water is introduced through the inlet 213.

Raw water introduced into the filtration unit 212 through the inlet 213 is filtered by the filter 220 and then purified and discharged through the outlet 214.

When the outlet 214 fluid moves in the filtration unit 212, foreign substances and microorganisms contained in the raw water by the filter 220 are attached to the surface of the filter 220 and filtered.

At this time, the filter 220 is formed in a cylindrical shape, the filtered foreign matter and microorganisms hit the outer circumferential surface of the filter 220, foreign matter and microorganisms to fall toward the outlet 218 by gravity do.

Some of the microorganisms filtered by the filter 220 is attached to the surface of the filter 220 is a biofouling phenomenon occurs.

In this case, the power supply device 240 supplies power to the power applying electrode 230.

Then, the power applying electrode 230 is a (+) electrode, the filter 220 connected by the ground line 250 is a (-) electrode.

As the power is applied to the power supply electrode 230, a pulse spark plasma is generated between the filter 220 and the power supply electrode 230, which causes the surface of the filter 220 as well as the microorganisms in the fluid. All deposits, such as microorganisms attached to it, can be removed.

The present invention not only generates plasma in the fluid, but primarily filters foreign substances and / or microorganisms by the filter 220, and secondarily filters the microorganisms that are filtered and adhered to the surface of the filter 220. It is more effective because it is sterilized using.

The effects thereof are the same as those mentioned in the first embodiment, detailed description thereof will be omitted.

On the other hand, as described above, foreign matter and dead microorganisms dropped to the outlet 218 by the filter 220 and the plasma is discharged to the outside by opening the drain valve 219 at regular time intervals.

In this case, since the outlet 218 is formed to be inclined downward and is disposed on a vertical line of the filter 220, foreign substances and microorganisms falling from the surface of the filter 220 are more likely to be seen through the outlet 218. It can be easily discharged to the outside.

In addition, when the filter 220 is to be replaced, the filter 220 is separated from the flow path forming member 211, and then the filter 220, which is screwed to replace the filter 220, is replaced with the filter 220. Can be easily replaced.

Third embodiment

6 is a side structural view of a water treatment device according to a third embodiment of the present invention.

As shown in FIG. 6, the water treatment apparatus of the present embodiment includes a water tank housing 210, a filter 220, a power supply electrode 230, a power supply 240, a ground line 250, and the like. Is done.

The water tank housing 210 includes a flow path forming member 211 in which an inlet 213 and an outlet 214 are formed.

In addition, the filter 220 is coupled to the assembly portion 215 of the flow path forming member 211.

The power applying electrode 230 is formed in the shape of a hollow hollow cylinder, the upper portion is mounted on the lower portion of the flow path forming member 211 to communicate the inlet 213 and the outlet 214.

Compared to the second embodiment, the present embodiment has a large shape in which the power applying electrode 230 is formed in the shape of a hollow cylinder having an open top and an empty space therein, so that the power supply electrode 230 is formed in the same shape as the filtration unit of the second embodiment. There is a difference.

In other words, in this embodiment, the filtration unit and the power supply electrode of the second embodiment are integrated to form a single configuration, so that the power supply electrode 230 serves as a filtration unit for receiving the liquid and the filter 220. .

To this end, the power applying electrode 230 must be made of a conductive material, of course.

As a result, the filter 220 is disposed inside the power applying electrode 230 having a cylindrical shape and coupled to the assembly portion 215 of the flow path forming member 211.

At this time, the power applying electrode and the filter are to be the concentric circles of the same center and different diameter.

The power supply device 230 is connected to the cylindrical power supply electrode 240.

As described above, in this embodiment, the power applying electrode and the filter unit in the second embodiment are integrally formed in one member, so that the number of parts is reduced and assembly and fabrication are easy.

In addition, since the power applying electrode 230 surrounds the entire outer circumferential surface of the titanium filter 220 connected to the ground line 250, when a current is applied to the power applying electrode 230, Uniform plasma is generated on the entire surface to further increase the biofouling reduction effect.

Other matters are the same as in the second embodiment, detailed description thereof will be omitted.

Water treatment apparatus for reducing the biofouling of the present invention is not limited to the above-described embodiment, it can be carried out in a variety of modifications within the scope of the technical idea of the present invention.

1 is a structural diagram of a conventional underwater pulsed plasma processing apparatus,

2 is an operating configuration of FIG.

3 is a perspective view of a water treatment device according to a first embodiment of the present invention;

4 is a side structural view of a water treatment device according to a first embodiment of the present invention;

5 is a side structure diagram of a water treatment device according to a second embodiment of the present invention;

6 is a side structural view of a water treatment device according to a third embodiment of the present invention;

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

110, 210: water tank housing, 211: flow path forming member, 212: filter part, 113, 213: inlet port, 114, 214: outlet port, 215: assembly part, 216,217: valve, 118, 218: outlet port, 119, 219: drain Valve, 120, 220: filter, 130, 230: power supply electrode, 140, 240: power supply, 150, 250: ground line,

Claims (11)

A water tank housing having an inlet formed at one end thereof and an outlet formed at the other end thereof; A metal filter disposed between the inlet and the outlet of the tank housing; A power supply electrode mounted on the water tank housing and disposed adjacent to the filter; A power supply device connected to the power supply electrode to supply a current; It consists of a ground line connected to the filter, And a plasma is generated between the power supply electrode and the filter by the current supplied to the power supply device to remove deposits adhered to the filter. The method of claim 1, The filter is made of titanium with fine pores, The inlet and outlet are in communication with each other by the pores formed in the filter water treatment apparatus for reducing biofouling. 3. The method of claim 2, The power supply electrode is a water treatment device for reducing biofouling, characterized in that disposed between the inlet and the filter. The method of claim 3, The filter has a plate shape and is disposed obliquely in the tank housing, And a lower surface of the filter faces a liquid flowing through the inlet, and a top surface of the filter is disposed to face a liquid that has passed through the filter. The method of claim 3, The tank housing, A flow path forming member having an inlet formed at one end thereof and an outlet formed at the other end thereof; Is mounted to the lower portion of the flow path forming member consisting of a filter for communicating the inlet and outlet, The filter is formed in a cylindrical shape with an open top, the water treatment apparatus for reducing biofouling, characterized in that coupled to the flow path forming member inside the filter. The method of claim 5, The flow path forming member is provided with an assembly portion in which the filter is mounted, at the outlet port, The filter is water treatment apparatus for reducing biofouling, characterized in that the open top is coupled to the assembly portion and the inside of the filter is in communication with the outlet. The method of claim 6, The filtration unit is detachably coupled to the flow path forming member, The assembly portion and the upper end of the filter, the thread is formed, respectively, the water treatment apparatus for reducing biofouling, characterized in that the screw is coupled to each other. The method according to claim 5 or 6, The power supply electrode is a water treatment device for reducing biofouling, characterized in that disposed between the outer peripheral surface of the filter having a cylindrical shape and the inner peripheral surface of the filter portion. The method according to claim 4 or 5, The outlet of the water tank housing is formed by the drain opening and closing by the drain valve, The lower portion of the water tank housing is a water treatment apparatus for reducing bio fouling, characterized in that formed inclined downward toward the discharge port. The method according to claim 1 or 2, The water tank housing is formed of a flow path forming member formed with an inlet at one end and an outlet at the other end, The power supply electrode is formed in a hollow hollow pillar shape of the upper portion, is mounted to the lower portion of the flow path forming member to communicate the inlet and outlet, The filter is formed in a cylindrical shape having an open top, the water treatment apparatus for reducing biofouling, characterized in that coupled to the flow path forming member inside the power applying electrode. The method of claim 10, And said power applying electrode and said filter are concentric circles having the same center and different diameters.

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