KR101745687B1

KR101745687B1 - Non-point pollution reducing apparatus of upward flow and downward flow type

Info

Publication number: KR101745687B1
Application number: KR1020150156189A
Authority: KR
Inventors: 안병기; 손규호; 한상온; 신현곤; 김웅용; 한승연
Original assignee: 안병기; 손규호; 한상온
Priority date: 2014-11-06
Filing date: 2015-11-06
Publication date: 2017-06-12
Also published as: KR20160054428A

Abstract

TECHNICAL FIELD The present invention relates to a device for reducing upflow and downflow non-point pollution. The up-down flow type non-point pollution abatement apparatus of the present invention can selectively use the up flow filtration system and the down flow filtration system under the control of the control unit, so that a proper filtration system can be applied according to the state of the inflowed polluted water.
The present invention can provide an excellent backwashing effect because the backwashing portion is located inside the filter material portion and includes the isolation portion. Further, according to the present invention, the position of the filter material can be adjusted according to the filtration method, and a space for cleaning the inside of the filtration tank can be secured even if the filtration tank is made small.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-point pollution reducing apparatus,

The present invention relates to a non-point pollution abatement apparatus, and more particularly, to a non-point pollution abatement apparatus capable of selectively using an upflow filtration system and a downflow filtration system under the control of a control unit.

Generally, the sources of water pollutants can be classified into point pollutants and nonpoint pollutants. Point pollutants are constantly generated at relatively constant points such as domestic sewage and factory wastewater, and thus there is no significant variation in the amount of emissions during rainfall or non-rainfall, while non-point pollutants are released along with surface runoff during rainfall Pollutants such as dust and garbage on the surface of the earth or in the air, fertilizers and pesticides sprayed on agricultural land, and housing runoffs. Point pollution sources come from wastewater discharge facilities such as factories and workplaces, so it is easy to collect because of the clear route of outflow, and the seasonal impact is relatively small. However, nonpoint pollution sources are difficult to collect and difficult to design and maintain because of the amount of generated and discharged amount greatly depends on weather conditions such as precipitation.

The non-point pollution abatement system has many treatment methods, but it can be installed in a narrow site and has a high efficiency. Therefore, a method of filtering contaminated water using a filter medium is widely used. The filtration method is a downflow type in which contaminated water is passed through from the upper portion of the filter medium to the lower portion and an upward flow type in which the contaminated water is filtered through the upper portion of the filter medium. Conventionally, due to a spatial problem and a cost problem, a single non-point pollution abatement device performs filtration only in one of an upflow type and a downflow type. However, there is a problem in that when the filtration is performed by one method, when the surface to be filtered is blocked by the pollutant, the filtration function itself is stopped and the time for replacing the filter medium is shortened.

In Korean Patent Publication No. 2012-0045189, a plurality of filtration tanks are provided and filtration is performed by an upstream type and a downstream type. However, this method does not use the filtration method selectively in one filtration tank, so there is a problem that a plurality of filtration vessels require a lot of installation space, and that the filtration time is long, The filtration function is stopped even if the downstream filtration media is usable. In addition, the downward flow needs to be installed on the upper side, and the upward flow needs to be installed on the lower side for facility inspection and cleaning. There is a problem in that it is difficult to move from the inside to the inside to deepen the facility or to enter the inspection for securing.

SUMMARY OF THE INVENTION An object of the present invention is to provide an up-down flow type non-point pollution reduction device capable of selectively using an upflow filtration method and a downflow filtration method.

Another object of the present invention is to provide an apparatus for reducing non-point pollution in an upper and a lower flow-through type which can clean the filter media cleanly during backwashing.

Another object of the present invention is to provide a non-point pollution reduction apparatus capable of stably supporting a filter unit while moving a filter unit for filtration or filtration.

The apparatus for downpouring non-point pollution includes a settling tank, a filtration tank, a collecting tank, and a control unit. The filtration tank has a first bank, a second bank, a filter, a drain pump, and a backwash. The first partition wall forms a boundary with the sedimentation tank, and has a first inlet port on the upper side and a second inlet port on the lower side. And the first discharge port is located on the upper side of the second bank. The filter unit is installed between the first partition and the second partition such that the first inlet and the first outlet are located at the upper portion and the second inlet is located at the lower portion. The filter media is filled with filter media. The drain pump pumps water under the first outlet. The backwash section backwashes the filter media of the filter media. The water collected in the filtration tank is collected in the collecting tank. The control unit regulates the first inlet, the second inlet, the first outlet, and the drain pump.

The filter unit of the upper / lower flow type non-point pollution abatement device according to the embodiment of the present invention may include an upper fixed plate located on the upper portion of the filter medium and a lower fixed plate located on the lower portion of the filter medium. The backwashing section is installed in the upper fixing plate and the lower fixing plate, respectively. The backwashing section includes an air cleaning pipe, a water washing pipe, and an isolation portion. The isolator isolates the air wash tubing and the water wash tubing from the filter media.

The filter unit of the upper and lower flow type non-point pollution abatement device according to the embodiment of the present invention can be supported by the support pillars.

In the upper and lower flow-through type non-point pollution abatement apparatuses according to the embodiments of the present invention, the filter unit may include a screen in at least one of an upper portion and a lower portion.

The filter unit of the apparatus for downpouring non-point pollution reduction according to an embodiment of the present invention can be installed so as to be movable up and down. The control unit can control the position of the filter unit.

In the apparatus for reducing non-point pollution in the upper stream and the downflow stream according to the embodiment of the present invention, the settling tank, the filtration tank, the water collecting tank, and the control unit can be arranged in a rectangular shape.

The non-point pollution reduction apparatus according to the present invention can selectively use the upflow filtration system and the downflow filtration system under the control of the control unit. Therefore, a suitable filtration method can be applied according to the state of the inflowing contaminated water. In this case, by changing the filtration system, the filter material can be back-washed, and the service life of the filter material can be increased accordingly.

In the non-point pollution abatement device according to the present invention, the backwashing effect is increased since the air cleaning gutter water washing pipe is not in direct contact with the filter material by the isolator during backwashing.

According to the non-point pollution reduction apparatus of the present invention, the position of the filter unit can be adjusted according to the filtration system by moving the filter unit, and a space for cleaning the inside of the filtration unit can be secured even if the filter unit is small.

In addition, the non-point pollution abatement device according to the present invention can correct vibration of the filter material due to movement of the filter material by applying vibration to the filter material part, and clean the pollutants in the filter material part easily.

1 is a view conceptually showing an apparatus for reducing non-point pollution in an upper and a lower flow direction according to an embodiment of the present invention.
FIG. 2 is a diagram conceptually showing a top view and a downward flow type non-point pollution reduction apparatus according to an embodiment of the present invention. FIG.
3 is a view illustrating a backwashing unit of the apparatus for reducing non-point pollution in an upper and a lower flow type according to an embodiment of the present invention.
FIG. 4 is a view conceptually showing that the filter material portion of the apparatus for downpiping non-point pollution according to the embodiment of the present invention includes a screen.
FIG. 5 is a view showing the movement of the filter media in the apparatus for downpiping non-point pollution in accordance with an embodiment of the present invention. FIG.
FIG. 6 is a conceptual diagram illustrating an apparatus for reducing up-down flow type non-point pollution including a vibration unit according to an embodiment of the present invention.
FIG. 7 is a conceptual view of a top-down flow type non-point pollution reduction apparatus having a second discharge port according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

FIG. 1 is a conceptual view of an apparatus for reducing non-point pollution in an upper and a lower flow direction according to an embodiment of the present invention. FIG. 2 conceptually shows a plan view of an apparatus for reducing non- FIG. 3 is a view illustrating a backwashing unit of the apparatus for downpouring nonpoint-point pollution, according to an embodiment of the present invention. FIG. 4 is a cross- Fig. 7 is a view conceptually showing that the filter material portion has a screen.

1 to 3, the apparatus for down-streaming non-point pollution reduction 1000 includes a settling tank 1100, a filtration tank 1200, a water collecting tank 1300, and a control unit 1400 .

In the sedimentation tank 1100, an inlet 1110 is formed, and an excellent gas including non-point pollutant is introduced through the inlet 1110. The inlet 1110 may be provided with a screen (not shown) to filter out foreign matter of a certain size or more contained in the rain. The sedimentation tank 1100 physically separates heavy sediment such as soil, sludge, dirt, and the like among non-point pollutants and suspended substances such as oil. The floating material including oil can be periodically removed using a nonwoven fabric or the like, and the precipitate can be treated by placing a separate sediment collecting box (not shown) detachably attachable to the lower part of the sedimentation tank 1100. At this time, a separate drain facility (not shown) for discharging the sediment may be provided.

The filtration tank 1200 includes a first partition 1210, a second partition 1220, a filter unit 1230, a drain pump 1240, and a backwash unit 1250. The first bank 1210 forms a boundary with the settling tank 1100. The first partition 1210 has a first inlet 1211 formed on the upper side thereof and a second inlet 1212 formed on the lower side thereof. The second bank 1220 forms a boundary with the water collecting tank 1300. And the first discharge port 1221 is formed on the upper side of the second bank.

The filter unit 1230 is installed between the first bank 1210 and the second bank 1220. At this time, the first inlet 1211 and the first outlet 1221 are positioned above the filter unit 1230 and the second inlet 1212 is located below the filter unit 1230. That is, one side of the filter unit 1230 is positioned between the first inlet 1211 and the second inlet 1212, and the other side is installed below the first outlet 1221.

The filter material is filled in the filter material portion 1230. The filter media can be zeolite, activated carbon, charcoal, anthracite, bentonite, wood chips, sand, and the like. In addition, various media suitable for reducing non-point pollutants can be used. The filter unit 1230 includes an upper fixing plate 1231 and a lower fixing plate 1232 for fixing the filter media. The upper fixing plate 1231 is located at the upper portion of the filter medium, and the lower fixing plate 1232 is located at the lower portion of the filter medium. A plurality of holes are formed in the upper fixing plate 1231 and the lower fixing plate 1232 so that there is no problem in drainage. The upper fixing plate 1231 and the lower fixing plate 1232 may be made of a material such as SUS which does not easily rust.

The upper fixing plate 1231 and the lower fixing plate 1232 can be manufactured in the form of a module in which a plurality of small plates are assembled. At this time, the plurality of small plates are made smaller than the manhole holes (not shown) formed in the filtration tank 1200 so that they can enter and exit through the manhole holes. When the upper fixing plate 1231 and the lower fixing plate 1232 are in the form of a module in which a plurality of small plates are assembled, it is possible to assemble or disassemble the filter member 1230 in the filtration tank 1200. Therefore, installation and maintenance of the filter unit 1230 are easy.

When the filter medium is filled in the upper and lower fixing plates 1231 and 1232, the upper and lower portions of the filter medium 1230 are filled with the filter media 1230. In this case, And a large size filter medium can be filled in the middle portion thereof. Thus, by varying the size of the filter media depending on the position, the filtration effect can be enhanced even when the filtration is performed in the upflow or downflow fashion.

In this embodiment, the filter material portion 1230 can be supported by the support pillars 1260. When the size of the upper and lower flow type non-point pollution reduction apparatus 1000 is increased, the size of the filter unit 1230 becomes larger. When the filter unit 1230 is installed without the support column 1260, It is not possible to withstand the load. The number of the support pillars 1260 may vary depending on the size of the filter unit 1230 and the installation environment.

In another embodiment, as shown in FIG. 4, the filter media 1230 may have a screen 1233 in at least one of the top and bottom. More specifically, the screen 1233 is located at least one of between the filter medium and the upper fixing plate 1231 and between the filter medium and the lower fixing plate 1232. If the screen 1233 is provided as described above, the screen 1233 filters a part of the contaminants, thereby reducing the degree of contamination of the filter media. Further, since the screen 1233 can be replaced, cleaning of the filter unit 1230 can be facilitated.

The drain pump 1240 is located at the bottom of the filtration tank 1200. The drain pump 1240 is located below the first drain hole 1221 and pumps water that can not be discharged to the first drain hole 1221 to the water collecting passage 1300. The drain pump 1240 may be powered by a constant power source, or alternatively may be operated using solar power generation.

The backwashing section 1250 cleans the filter media to recover the effect of the filter media automatically when it is difficult to clean them with a force. In this embodiment, the backwashing section 1230 sprays water and air. To this end, the backwashing unit 1250 includes an air cleaning pipe 1251, a water washing pipe 1252, and an isolation unit 1253. Air is sprayed in the air cleaning pipe 1251, and water is sprayed in the water cleaning pipe 1252. By using water and air at the same time, the cleaning effect of the filter material is increased.

The backwashing section 1250 can use the water stored in the water collecting tank 1300 as backwash water, and the contaminated backwash water after the backwashing is stored in the settling tank 1100 and processed separately. The first outlet 1221 connected to the water collecting tank 1300 is closed in order to prevent contaminated backwash water from being backwashed into the water collecting tank 1300 and discharged to the outside, ).

The backwashing section 1250 is installed inside the upper fixing plate 1231 and the lower fixing plate 1232 of the filter unit 1230, respectively. The backwashing section 1250 provided inside the upper fixing plate 1231 is for backwashing in the upward flow and the backwashing section 1250 installed inside the lower fixing plate 1232 is for backwashing in the downflow direction. The backwashing section 1250 installed inside the upper fixing plate 1231 sprays water and air from the top to the bottom to remove contaminants located under the filter media 1230 by the upward flow filtration from the bottom of the filter media 1230 And then washed. The backwashing section 1250 installed on the inner side of the lower fixing plate 1232 sprays water and air from the bottom to the top of the filter medium 1230 to remove contaminants located on the upper portion of the filter medium portion 1230 by the downflow filtration, Lt; / RTI > Since backwashing is possible in both directions as described above, the present invention can clean the filter member 1230 more cleanly than washing in only one direction.

3, the backwashing unit 1250 installed inside the lower fixing plate 1232 and the backwashing unit 1250 installed inside the upper fixing plate 1231 are respectively provided with one air cleaning pipe 1251, The water washing pipe 1252 can be branched and connected. Valves 1251a and 1252a are provided at the branching points to control the upper and lower injection. If a single pipe is installed in a branch, it is possible to have one pump for spraying water and air, and the whole piping can be efficient. Accordingly, it is possible to reduce the overall size of the upper and lower flow type non-point pollution reduction apparatus 1000.

When the backwashing unit 1250 is installed in the filter unit 1230, the air washing pipe 1251 and the water washing pipe 1252 come into direct contact with the filter material. Therefore, since the backwashing portion 1250 is farther away from the filter medium portion 1230 than the backwashing portion 1230, the cleaning effect is enhanced because the filter medium is washed away. However, in this case, the air and water are prevented from being sprayed by the filter medium, and the backwashing effect may be deteriorated. In order to solve such a problem, the backwashing section 1250 includes an isolating section 1253 in this embodiment to prevent the interference of the jetting by the filter media. Since the isolation portion 1253 is provided, the filter material does not block the air cleaning pipe 1251 and the water cleaning pipe 1252. In this embodiment, the isolation portion 1253 has a hemispherical shape, but is not limited thereto. A plurality of holes are formed in the isolation portion 1253 so that air and water are jetted at various angles. If the backwashing section 1250 is provided with the isolation section 1253, even if the backwashing section 1250 is installed inside the housing section 1230, there is no problem in backwashing and the backwashing effect can be improved .

The water collected in the filtration tank 1200 is collected in the water collection tank 1300. The water collected in the water collecting tank 1300 can be used as backwash water to clean the filter unit 1230 by using a pump or the like.

The control unit 1400 controls the opening and closing of the first inlet 1211, the second inlet 1212 and the first outlet 1221 and regulates the operation of the drain pump 1240. The control method of the control unit 1400 can selectively use the filtering method of the upper and lower flow type non-point pollution reduction apparatus 1000 in an upflow type and a downflow type. In the filtration tank 1200, the first inlet 1211 is opened and the second inlet 1212 and the first outlet 1221 are closed in order to perform filtration in a downflow manner. The water introduced from the settling tank 1100 flows through the first inlet 1211 and is filtered while passing through the filter unit 1230 from the upper portion of the filter unit 1230 to the lower portion. The filtered water is discharged to a collecting passage 1300 through a drain pump 1240.

In order to filter in the filtration tank 1200 in an upward flow mode, the second inlet 1212 and the first outlet 1221 are opened and the first inlet 1211 is closed. The water introduced from the settling tank 1100 flows through the second inlet 1212 and is filtered while passing through the filter unit 1230 from the lower portion of the filter unit 1230 to the upper portion of the first outlet 1221, And flows into the water collecting tank 1300 through the water supply pipe 1300. When the filtration is performed by the upward flow type or the down flow type by using the one filter portion 1230, the filter portion 1230 is back-washed as the system is changed. That is, when the filtration is performed by the upflow method, the filtrate is filtered by the downflow filtration method, and when the filtration is performed by the downflow filtration method, the filtrate is filtered by the upward flow filtration method.

The upper and lower flow type non-point pollution abatement apparatus 1000 can vary the arrangement of the settling tank 1100, the filtration tank 1200, the water collecting tank 1300, and the control unit 1400. However, in order to increase spatial efficiency, the sedimentation tank 1100, the filtration tank 1200, the water collection tank 1300, and the control unit 1400 may be arranged in a rectangular shape instead of a straight line as shown in FIG. In another embodiment, the settling tank 1100, the filtration tank 1200, the water collecting tank 1300, and the control unit 1400 may be formed in various shapes according to the environment in which the apparatus for downpipe pollution reduction 1000 is installed.

In the case of stagnant stagnant water in the lower part of the settling tank 1100 or the filtration tank 1200, it can be discharged using a stagnant water discharge pump (not shown). In another embodiment, a stagnant water discharge pipe for discharging stagnant water may be installed below the sedimentation tank 1100 or the filtration tank 1200. When discharging the stagnant water, gravel and filter material can be installed at the end of the stagnant water discharge pipe to filter pollutants.

FIG. 5 is a view showing the movement of the filter media in the apparatus for downpiping non-point pollution in accordance with an embodiment of the present invention. FIG.

As shown in FIG. 5, the upper and lower flow-type non-point pollution reduction apparatus 2000 according to an embodiment of the present invention can be installed so that the filter unit 2230 can move up and down. In this embodiment, the support pillars 2260 are vertically tensioned and contractible to move the filter media 2230. Hydraulic pressure or the like may be used for tension and contraction of the support column 2260. The air cleaning pipe 2251 and the water washing pipe 2252 penetrating the supporting column 2260 are also installed to be able to be stretched and contracted according to the tension and contraction of the supporting column 2260. An angle 2261 provided in the first and second barrier ribs 2210 and 2220 and supporting the filter medium portion 2230 is also installed to be movable along the first and second barrier ribs 2210 and 2220 . The filter member 2230 moves according to the tension and contraction of the support pillars 2260.

When the filter member 2230 is not supported by the support pillar 2260, the filter member 2230 can be moved using a motor (not shown) or the like. In other embodiments it is also possible to move manually.

The position of the filter material portion 2230 can be changed according to the filtering method by moving the filter material portion 2230. Therefore, the filtration effect can be further increased by changing the filtration system. When cleaning the inside of the filtration tank 2200, it is necessary for a person to directly enter the inside of the filtration tank 2200. In this case, when the upper portion of the filtration tank 2200 is cleaned, the filtration media 2230 is moved downward, 2200, the space for the cleaning member 2230 can be secured by moving the space 2230 upward. Accordingly, it is possible to make the filtration tank 2200 small.

When the filter unit 2230 is moved, the filter media charged in the upper and lower fixing plates 2231 and 2232 are moved so that contaminants in the filter media can be discharged to the outside of the filter unit 2230, . However, according to the present embodiment, the size of the filter media is different according to the inner position of the filter media portion 2230. When the filter media portion 2230 moves, the filter media charged inside the upper and lower fixing plates 2231 and 2232 move Arrangement of filter media can be scattered. In order to prevent this, a plurality of inner walls (not shown) may be provided inside the upper fixing plate 2231 and the lower fixing plate 2232. By installing the inner wall, different size media can be maintained.

FIG. 6 is a conceptual diagram illustrating an apparatus for reducing up-down flow type non-point pollution including a vibration unit according to an embodiment of the present invention.

As shown in FIG. 6, the upper and lower flow type non-point pollution reduction apparatus 3000 according to an embodiment of the present invention may include a vibration unit 3270. The vibration portion 3270 applies vibration to the filter portion 3230. For this, the vibrating unit 3270 is attached to the filter unit 3230 in the present embodiment. However, the vibration unit 3270 is not limited thereto and may be installed apart from the filter unit 3230 if vibration can be applied to the filter unit 3230 .

When the vibrating portion 3270 vibrates the filter portion 3230, the filter material charged inside the filter portion 3230 is also vibrated, so that the filter material moves. Accordingly, it is possible to correct that the filter material is scattered or scattered along with the movement of the filter material portion 3230.

Further, by causing the filter element 3230 to vibrate, contaminants in the filter element of the filter element 3230 can be discharged to the outside. Therefore, the filter member 3230 can be easily cleaned.

FIG. 7 is a conceptual view of a top-down flow type non-point pollution reduction apparatus having a second discharge port according to another embodiment of the present invention.

As shown in FIG. 7, the filtration tank 4200 includes a first partition 4210, a second partition 4220, and a filter unit 4230. The first bank 4210 forms a boundary with the settling tank 4100. The first partition 4210 has a first inlet 4211 on the upper side and a second inlet 4212 on the lower side. The second partition wall 4220 forms a boundary with the water collecting tank 4300. The second partition 4220 is formed with a first discharge port 4221 on the upper side and a second discharge port 4222 on the lower side.

The filter unit 4230 is installed between the first partition 4210 and the second partition 4220. The first inlet 4211 and the first outlet 4221 are located at the upper portion of the filter member 4230 and the second inlet 4212 and the second outlet 4222 are located at the lower portion of the filter member 4230 do. That is, one side of the filter unit 4230 is positioned between the first inlet 4211 and the second inlet 4212, and the other side is installed between the first outlet 4212 and the second outlet 4222. A drain pump 4240 is installed on the bottom surface of the filtration tank 4200. The first inlet 4211, the second inlet 412, the first outlet 4221, and the second outlet 4222 are controlled by a controller.

It is preferable to electrically control the second outlet 4222 if the place where the upper / lower flow type non-point pollution abatement device 4000 is installed can easily use electricity and the treatment of the backwash water is possible. In this case, the drain pump 4240 may not be used.

If the place where the upper / lower flow type non-point pollution abatement device 4000 is installed can easily use electricity but the backwash water treatment is difficult, the second outlet 4222 is closed and the water filtered by the drain pump 4240 is collected in the collection tank (4300). The stagnant water such as backwash water generated by backwashing can be removed by providing a stagnant water discharge pipe (not shown) at the bottom of the settling tank 4100 and the filtration tank 4200. At this time, if the second outlet 4222 is not closed, the purified water of the water collecting tank 4300 can be excluded together with the stagnant water in removing the congestion water.

If the place where the upper and lower flow-through type non-point pollution abatement device 4000 is installed can not easily use electricity and the backwash water treatment is difficult, the second outlet 4222 is closed and the solar cell- Electricity is generated through power generation and the drain pump 4240 is operated to pump the filtered water to the water collection tank 4300. The stagnant water can be removed by providing a stagnant water discharge pipe (not shown) at the bottom of the settling tank 4100 and the filtration tank 4200.

It should be noted that the embodiments of the present invention disclosed in the present specification and drawings are only illustrative of the present invention in order to facilitate the understanding of the present invention and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1000, 2000, 3000, 4000: Upstream and downflow type non-point pollution abatement device
1100, 4100: settling tank 1200, 2200, 3200, 4200: filtration tank
1210, 2210, 4210: first partition 1211, 4211: first inlet
1212, 4212: second inlet port 1220, 4220: second partition wall
1221, 4221: first outlet 4222: second outlet
1230, 2230, 3230, 4230: filter media 1231, 2231:
1232, 2232: Lower fixed plate 1233: Screen
1240, 4240: Drain pump 1250:
1251, 2251: air wash tube 1252, 2252: water wash tube
1253: Isolation part 1260: Support column
1300, 4300: Water collecting tank 1400:
3270:

Claims

Sedimentation tank;
A first partition wall where a first inlet is located at an upper side and a second inlet is located at a lower side, a second partition where a first outlet is located at an upper side, and a second partition located between the first partition and the second partition A drain pump for pumping the water below the first outlet, and a drain pump for supplying water to the filter medium in the filter medium, wherein the first inlet and the first outlet are located at the upper portion, A backwashing unit for backwashing the backwashing liquid;
A water collecting tank for collecting the filtered water in the filtration tank; And
And a control unit for controlling the opening and closing of the first inlet, the second inlet, and the first outlet and regulating the operation of the drain pump,
The filter unit includes an upper fixing plate located on the upper portion of the filter medium and a lower fixing plate located on the lower portion of the filter medium,
Wherein the backwashing unit is installed in the upper fixing plate and the lower fixing plate,
Wherein the backwashing unit includes an air cleaning pipe, a water washing pipe, and an isolation unit for isolating the air cleaning pipe and the water washing pipe from the filter material.

delete

The method according to claim 1,
Wherein the filter unit is supported by support pillars.

The method according to claim 1,
Wherein the filter unit has a screen at least one of an upper portion and a lower portion.

The method according to claim 1,
The filter unit is installed so as to be movable up and down,
Wherein the control unit is capable of controlling the position of the filter unit.

The method according to claim 1,
Wherein the settling tank, the filtration tank, the water collecting tank, and the control unit are arranged in a quadrangular shape.