KR101872911B1 - Apparatus for reducing non-point source pollutants - Google Patents

Abstract

A nonpoint pollution source abatement apparatus is disclosed. The apparatus for reducing non-point pollution sources according to the present invention includes: a needle-sinker connected to an inflow channel and having a plurality of screen filters arranged therein; A sedimentation tank having a plurality of adsorbent fixing members protruding from a side wall, a side wall, and a side wall; A flow regulating tank for uniformly supplying the storm that has passed through the settling tank through the bottom of the filtration tank; A filtration tank having two or more filter media and connected to a filtered water discharge passage communicating with the treatment water tank; And a treatment water tank for storing the filtered water through the filtration tank. The opening and closing of the inflow channel, the backwashing of the filtration tank and the reverse transfer of the backwash water are automatically controlled through the inflow of rainfall and the level measurement using the level switch.

Description

[0001] Apparatus for reducing non-point source pollutants [

The present invention relates to a non-point pollution source treatment apparatus, and more particularly, to a device for precipitating various pollutants from a stormwater flowing through a gutter path, filtering and discharging the pollutants.

The pollutants that flow out through surface runoff mainly in rain are called nonpoint pollutants. Traffic pollutants around the roads, dust and garbage in the urban areas, and other air pollutants accumulated on the ground surface are washed along the stormwater and discharged to the river along the storm waterway, where the storm becomes the main nonpoint source.

As a result of the investigation on the domestic river pollutant load carried out after 2000, it is known that the nonpoint pollutant source accounts for about half of the total discharge load (BOD standard). Therefore, There is a consensus that it is necessary.

As a countermeasure to reduce river pollution caused by nonpoint pollution sources, a reservoir has been developed and used for discharging pollutants washed out during the initial rainfall on the road drainage in urban areas.

From this point of view, Korean Patent Registration Nos. 10-1080636 and 10-1124689 have been developed. However, this conventional technique does not deviate from the function of a storage tank for simply depositing contaminants, and there is a limit in not removing phosphorus contained in the storm.

On the other hand, Korean Patent Registration No. 10-0901263 discloses a technique for removing phosphorus from rainwater, but it has a problem that clogging occurs due to suspended substances or sludge, and the filtering function is rapidly insolubilized.

Korean Patent Laid-Open Publication No. 10-2014-0145305 discloses a means for removing phosphorus from the rainwater and preventing clogging by using filter media. However, in a state where the sedimentation of sludge and floating material is not structurally structured, , The possibility of occlusion is high, and the power is partially used for backwashing, but there is a limit in that it is difficult to selectively respond to the initial rainfall.

Literature 1. Korea Patent No. 10-1080636 "Nonpoint Source Pollution Reduction System" Document 2: Korean Patent No. 10-1124689 entitled "Nonpoint Source Polluted Structure" Document 3: Korean Patent Registration No. 10-0901263 "Natural Type Nonpoint Source Pollution Reduction Apparatus Using Ion Exchanger Optionally" Document 4: Korean Patent Publication No. 10-2014-0145305 entitled "Non-

The present invention has been developed in order to overcome the problems of the related art as described above. The present invention provides a method for removing suspended solids by using a screen filter and removing secondary particles by using an adsorption plate, And an object of the present invention is to provide a non-point pollution source abatement apparatus which enables effective abatement.

Another object of the present invention is to reduce the nonpoint source pollution by separating the suspended material and the filtration process by the filter material layer by inducing the fine particles to be removed after the removal of the suspended material, The purpose of the device is to provide.

It is still another object of the present invention to provide a nonpoint source reduction apparatus capable of effectively performing initial treatment of a nonpoint source by controlling the opening and closing of the valve using the flow rate of the treatment water tank in the initial rainfall inflow.

According to an aspect of the present invention, there is provided a non-point pollution source reduction apparatus comprising: a sedimentation tank connected to an inflow channel and having a plurality of screen filters arranged therein;

A sedimentation tank having a plurality of adsorbent fixing members protruding from a side wall, a side wall, or a side wall provided with a bottom opening or a predetermined distance from the bottom;

A flow regulating tank for uniformly supplying the storm that has passed through the settling tank through the bottom of the filtration tank;

A filtration tank having two or more filter media and connected to a filtered water discharge passage communicating with the treatment water tank; And

And a treatment water tank for storing the filtered water through the filtration tank.

The height of the sidewall between the settling tank and the settling tank is designed to be higher than the height of the sidewall between the settling tank and the settling tank so that the introduced infiltrate moves only in one direction .

In the meantime, a plurality of level switches are provided inside the treatment water tank to sense the water level. The motor-operated valve is provided at the front end of the inflow passage and opens and closes the inflow passage under the control of the control processing section.

The control processing unit controls the electric valve according to the water level in the treatment water tank using the timer or the level switch at the initial rainfall to open and close the inflow channel.

On the other hand, the discharge vessel communicates with the treatment water tank.

The control unit further includes a discharge pipe branched upward from the front end of the electric valve of the inflow water to be connected to the discharge tank. When the control processing unit controls the electric valve to block the inflow water, the stormwater flows into the discharge tank along the discharge pipe.

The air discharge pipe is formed at a position spaced apart from the lower end face of the filtration tank by a predetermined distance, and a plurality of air discharge nozzles are formed by perforating the lower end face of the filtration tank.

The wash water discharge pipe is installed inside the upper end of the filter medium layer, and a plurality of discharge water discharge nozzles are formed by perforating.

The air compressor is connected to the air discharge pipe to supply compressed air, and the first pump supplies water inside the treatment tank to the wash water discharge pipe.

After the filtration of the rainwater has sufficiently progressed, the control processing unit operates the air compressor and the first pump to perform backwashing.

At the lower end of the filtration tank, there is provided a bottom inclined surface downward in the direction of the flow rate adjustment tank, and a reverse conveyance pipe connecting the lower end of the flow rate adjustment tank and the needle bed is provided.

The second pump transfers the backwash water collected at the lower end of the flow rate control tank to the spinneret through the reverse transfer pipe under the control of the control processing unit.

The control processing unit activates the second pump after backwashing is performed.

According to the present invention, the screen filter and the adsorbent are sequentially disposed, and the inflow of rainfall moves the vertical section, thereby effectively separating the suspended matter and the fine particles before moving to the filter material layer.

On the other hand, it is possible to efficiently cope with the initial rainfall by automatically controlling the opening and closing of the valve by using the flow rate and the timer of the treatment water tank, and the effect of preventing the clogging of the filter medium layer and the wedge bar by washing through pumping in the treatment water tank have.

According to the present invention, not only the possibility of structural occlusion is remarkably reduced, but also the backwashing process using backwash water and compressed air and the reverse transfer process of backwash water are automatically processed, so that they can be used for a long time without any maintenance. There is an effect to make.

1 is an exploded perspective view showing an internal structure of a nonpoint pollution source reduction apparatus according to the present invention,
FIG. 2 is an AA cross-sectional view of the non-point source reduction apparatus shown in FIG. 1,
3 is a view showing a structure of a screen filter,
4 is a view showing the structure of the material layer,
5 is a cross-sectional view of the non-point pollution source reduction apparatus shown in Fig. 1,
6 is a functional block diagram illustrating a connection relationship between the control processing unit and other members,
FIG. 7 is a block diagram for explaining a processing procedure for an incoming storm.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Hereinafter, the present invention will be described in detail with reference to preferred embodiments of the present invention and the accompanying drawings, wherein like reference numerals refer to like elements.

It is to be understood that when an element is referred to as being "comprising" another element in the description of the invention or in the claims, it is not to be construed as being limited to only that element, And the like.

1 shows an internal structure of a non-point pollution source reduction apparatus according to the present invention.

1, the apparatus for reducing nonpoint pollution sources according to the present invention includes a settling tank 200, a settling tank 300, a flow rate adjusting tank 400, and a filtration tank 500 in sequence.

In addition, a treatment tank 600 and a discharge tank 700 are further provided in parallel with each other.

The inflow passages 11 are connected to one side of the settling tank 200 and introduce the storms including floating matters and soil to the settling tank 200. The discharge pipe (12) branching from the inflow channel (11) is connected to the discharge tank (700).

The settling tank 200 has a plurality of screen filters 210 arranged in parallel inside as means for primarily removing bulky substances or impurities contained in the initial rainfall.

The sedimentation tank 300 is a means for secondarily removing fine particles and has a bottom wall 310 with an opening at the lower end thereof to increase the residence time of the introduced fine.

The flow rate adjusting tank 400 is a means for adjusting the filtration rate so that the rainwater having passed through the settling tank 300 is uniformly mixed with the filtration tank.

The filtration tank 500 has two or more filter media layers. The sludge-removed storm moves upward from the lower end of the filtration tank 500 and is filtered through the filter media 510, 520, and 530 in order.

The treatment water tank 600 stores the filtered water through the filtration tank 500 and the water tank 700 is a means for discharging the inflowing water after the initial stormwater is sufficiently collected.

2 is a cross-sectional view taken along line A-A of the apparatus for reducing nonpoint pollution sources shown in Fig.

An inflow channel (11) is connected to one side of the settling tank (200).

A control valve 1111 electrically controlled in the front end of the inflow passageway 11 is provided to open and close the inflow passageway 11 under the control of the control processing unit 800 as described later.

The needle tanks 200 are provided with a plurality of screen filters 210 arranged in a vertical direction in parallel.

The screen filter 210 blocks the movement of the floating material contained in the rainwater flowing through the influent water line 11 and precipitates.

Fig. 3 shows the structure of a screen filter.

Preferably, the screen filter 210 comprises a fixing table 211 having a metal pipe structure and a plate-like nonwoven fabric 212 attached to the fixing table 211.

A plurality of screen filters 210 are fixed at predetermined intervals along a rail 213 provided on the inner wall of the settling tank 200.

A first sidewall 110 is formed between the sedimentation tank 200 and the sedimentation tank 300 on the opposite side of the inflow channel 11. [

As shown in FIG. 2, an overflow channel 13 connecting the settling tank 200 and the discharge tank 700 is formed at an upper end of the inner wall of the settling tank 200. The overflow channel 13 is positioned higher than the height of the first sidewall 110 by a predetermined length.

The stagnant material introduced into the stagnant tank 200 is firstly removed by collision with the screen filter 210 and floated when the stagnant tank 200 is filled to move over the first sidewall 100 to the settling tank 300 do.

The settling tank 300 is partitioned by a first sidewall 110 corresponding to a boundary with the settling tank 200 and a second sidewall 120 corresponding to a boundary between the flow control tank 400 and the settling tank 300.

At the center of the first sidewall 110 and the second sidewall 120, a vertical wall 310 is provided. The wall 310 is preferably open at the lower end or spaced a predetermined distance from the bottom.

On the other hand, on the first sidewall 110 and the second sidewall 120, a plurality of absorption foil fixing members protrude toward the center of the settling tank 300, and the absorption foil 322 is attached and fixed to the absorption foil fixing member, respectively.

A plurality of adsorbent fixing members are preferably protruded toward the first sidewall 110 and the second sidewall 120 on both sides of the partition wall 310 and the adsorbent 322 is attached and fixed.

At this time, the adsorbent is fixed at an oblique downward direction.

The stormwater flowing over the first sidewall 110 drops down along the space between the first sidewall 110 and the partition wall 310 and successively impacts the plurality of absorption pockets 322. At this time, the sludge remaining in the storm is adsorbed to the adsorbent 322.

As the water level in the sedimentation tank 300 rises, the storm moves through the open space 311 in the lower end of the trench 310 to the space between the trench 310 and the second sidewall 120.

As the water level rises along the space between the partition wall 310 and the second side wall 120, the height rises from bottom to top. At this time, the remaining sludge is adsorbed by the plurality of adsorption rollers 322.

2, the height of the partition wall 310 is the highest, and the height of the tops of the first sidewall 110 and the second sidewall 120 is the lowest. When the water level in the sedimentation tank 300 reaches the second sidewall 120 or more, the sludge flows to the flow rate regulator 400 beyond the second sidewall 120.

Included in excellence Mellow  In order to remove the same particles, it is necessary to secure the residence time of the storm as much as possible, but it is difficult to ensure the residence time of the storm when horizontally designing the moving route of the storm. Therefore, By vertically designed to flow, the flow velocity of the storm is lowered and the residence time is maximized.

If there is no limitation on the volume of the sedimentation tank 300, it may be possible to secure a sufficient residence time simply by designing the sedimentation tank 300 largely. However, Compact This structure is adopted to maintain the residence time while maintaining the same.

The flow regulating tank 400 is partitioned by the second side wall 120 and the third side wall 130. The lower end of the third sidewall 130 may be open or spaced apart from the bottom by a predetermined height.

The lower end of the flow control tank 400 communicates with the lower end of the filtration tank 500 on one side.

The storm that has moved to the flow rate adjusting tank 400 drops the moving speed significantly and fills the space reaching the lower end of the filtration tank 500 gradually.

The bottom surface of the filtration tank 500 is provided with a bottom inclined surface 502 which gradually decreases toward the third side wall 130. In the process of moving to the filtration tank 500, most of suspended matters and sludge are deposited or adsorbed, but some fine particles may remain.

In a state in which the flow velocity is significantly lowered, the particles sink to the bottom and gradually move along the bottom inclined surface 502 to be collected on the bottom surface of the flow control tank 400.

1, a reverse transfer pipe 17 connecting the flow rate control tank 400 and the needle settlement tank 200 is connected to one side of the lower portion of the flow rate control tank 400.

As described later, the second pump 1122 operates under the control of the control processing unit 800, and collected foreign substances such as backwash water and sludge are transported through the reverse conveying pipe 17.

The filtration tank 500 has a plurality of filter media layers 510, 520, and 530. Such a material layer 510, 520, 530 is fixed at a predetermined distance from the bottom inclined surface 502.

Fig. 4 shows a cross-sectional structure of the filtration tank 500. Fig.

As shown in FIG. 4 (a), the filtration tank 500 preferably has a structure in which three filter media layers 510, 520, and 530 are laminated.

Each of the media layers 510, 520, and 530 has a structure in which a predetermined filter material is filled in a housing in which a flange is formed along the upper and lower edges, and is successively layered and then fastened and fixed by a coupling member such as a bolt.

The bottom and top surfaces of the respective material layers 510, 520, and 530 are formed of a wedge bar structure 501 having a structure as shown in FIG. 4 (b).

In the wedge bar structure 501, a plurality of rod-shaped wedge bars 5011 having a wedge-shaped cross-sectional structure are arranged in parallel with each other while being minutely spaced from each other, and a fixed rod 5012 is placed on the upper portion, And is produced by point contact.

As a result, the groove 5013 between the two adjacent wedge bars 5011 has a structure that gradually widens toward the upper part.

Therefore, foreign matter having a large particle size can be prevented from flowing into the filter layers 510, 520, and 530 when the storm flows through the grooves 5012. With such a structure, it is possible to prevent clogging of the wedge bar 5011 due to foreign matter.

The first filter material layer (510) is preferably an expandable polystyrene (EPS) Filter media . And foamed to have a diameter of 2 to 4 mm.

The rainwater that has passed through the first filter material layer (510) is filtered by the EPS filter material.

On the other hand, the second filter medium layer 520 is preferably filled with activated carbon. Preferably, wood, lignite, or peat can be treated with a chemical agent such as zinc chloride or phosphoric acid, which is an activator, followed by drying or activated with water vapor.

The third filter medium layer 530 is filled with a volcanic stone. Particles preferably broken to 5 to 20 mm may be used. When finely crushed particles are used, occlusion may occur. Therefore, it is preferable to use particles of 5 mm or more as much as possible. The volcanic stone has many voids and is rich in iron, which is effective for phosphorus removal.

Removal of phosphorus is very important in the treatment of nonpoint pollutants, and EPS Media and  Following Activated Carbon Volcanic  The use of phosphorus makes it possible to effectively remove phosphorus.

As shown in FIG. 4A, a washing water discharge pipe 16 having nozzles for spraying washing water (or compressed air) downward is provided in each of the media material layers 510, 520, and 530. As the first pump 1121 operates under the control of the control processing unit 800 as described later, the washing water discharge pipe 16 is filled with the filtration tanks 510, 520, and 530, (Or compressed air) toward the filter material.

4 (a), the filtration tank 500 has an air discharge pipe 16 installed at a position spaced from the lower end surface of the first filter material layer 510 by a predetermined distance.

The air discharge pipe 16 is formed by drilling a plurality of air discharge nozzles toward the lower end surface of the filtration tank 500.

The compressed air is discharged through the air discharge pipe 16 as the air compressor 1140 is driven under the control of the control processing unit 800 as will be described later so that the wedge bar The sludge or other dirt attached to the structure 501 is removed.

On the other hand, a filtrate water discharge passage 14 communicating with the treatment water tank 600 is provided at the upper end of the filtration tank 500.

The filtered water that has passed through the third filter material layer 530 and moved upward moves to the treatment water tank 600 through the filtered water discharge water path 14.

5 is a B-B cross-sectional view of the non-point source reduction apparatus shown in FIG.

The discharge pipe 12 branches upward from the front end of the electric motor 1111 of the inflow passageway 11 and is connected to the outlet tank 700.

As described below, when the inflow water channel 11 is shut down due to the operation of the electromotive valve 1111 under the control of the control processing unit 800, the water pressure causes the water to flow along the discharge pipe 12 to the discharge tank 700 ≪ / RTI >

1, the discharge pipe 12 is connected upward so as to be positioned higher than the inflow passageway 11, and therefore, the inflow passageway 12 does not flow into the discharge pipe 12 in a state in which the inflow passageway 11 is open .

On the other hand, a pipeline leading to a well-drained pipe is connected to one side of the lower end of the discharge tank 700 and discharged without treating the storm that has flowed in.

When the water level of the treatment water tank 600 reaches a level that reaches the filtered water discharge water path 14, the filtered water floats over the discharge tank 700 and is moved do.

Meanwhile, a plurality of level switches 610 are provided in the processing bath 600.

In the example of FIG. 5, it can be seen that three level switches 1131, 1132 and 1133 are provided. The lowest level first switch 1131 is located on the bottom of the process bath 600. When the treated water tank 600 is empty and the filtered water flows through the filtration tank 500, it is sensed.

The third level switch 1133 is located directly below the filtered water drain 14. When the treatment water tank 600 is full, it is detected.

The second level switch 1132 is located between the first level switch 1131 and the third level switch 1133. When the water level in the treatment water tank 600 reaches a certain level, it is detected.

1 and 5, a strainer 21 may be provided on the bottom surfaces of the settling tank 200, the settling tank 300, the flow rate adjusting tank 400, and the process tank 600. [

The strainer (21) discharges the stormwater to the outside through the drain pipe (18). The strainer 21 may be a conventional one.

6 is a functional block diagram illustrating a connection relationship between the control processing unit and other members.

The control processing unit 800 is electrically connected to and controls the plurality of level switches 1130, the pumps 1121 and 1122, the air compressor 1140, the motor-operated valve 1111, and the timer 1150.

The first pump 1121 is preferably mounted on the treatment tank 600 and pumps the filtered water to the washing water discharge pipe 16 leading to the interior of the filtration tank 500. [

The second pump 1122 is preferably mounted on the flow rate adjusting tank 400 and the foreign substances such as the backwash water and the sludge collected at the lower end of the flow rate adjusting tank 400 are supplied to the settling tank 200 through the reverse transfer pipe 17 Pumped and transported.

The air compressor 1140 is means for supplying compressed air to the air discharge pipe 15, and the timer 1150 can be a known means for measuring the passage of time.

The control processing unit 800 is connected to a plurality of level switches 1130 and operates the electric valve 1111 according to a preset condition to shut off the inflow water path 11.

For example, the inflow channel 11 is blocked when a predetermined time has elapsed since the initial rainfall is introduced. 5, when the first level switch 1131 senses the water level, it is determined that the initial level has been introduced. Then, when the predetermined time (for example, one hour) elapses after activating the timer 1150 from this time, the motor 1111 is operated to shut off the inflow water 11.

Generally, most of the dust or dirt on the road side is washed down through the initial rainfall of about one hour, so that the rainwater flowing thereafter is discharged through the discharge pipe 12.

Alternatively, the influent water line 11 may be shut off when the treatment water tank 600 is full.

5, when the third level switch 1133 senses the water level, it is determined that the storage capacity of the process water tank 600 is full, so that the electric valve 1111 is operated, .

On the other hand, The inflow path (11)  The control processing unit 800 drives the timer 1150 to wait for the elapse of a preset time. Thereafter, the motor-operated valve 1111 is operated again The inflow path (11)  It opens.

The time of the emptying of the treatment water tank 600 can be predicted by calculating the discharge amount of the rainwater through the drain, and the inflow water path 11 which has been blocked when the time has elapsed can be reopened, .

On the other hand, the control processing unit 800 performs backwashing on the filtration tank 500 when the predetermined condition is satisfied.

For example, backwashing can be performed when the filtration process for the inflowing storm is sufficiently advanced and no more stormwater is further introduced into the filtration tank 500.

1, when the water level of the process water tank 600 reaches a predetermined value or a predetermined time elapses after the start of the inflow of the initial rainfall, the electric valve 1111 operates to return the inflow water passage 11 It can be judged that the stormwater will no longer flow into the filtration tank 500.

Thereafter, when the filtration process in the filtration tank 500 for the storm is sufficiently completed, backwashing is performed for a predetermined time.

The control processing unit 800 drives the timer 1150 to operate the first pump 1121 after a predetermined time elapses. Thereby, the water in the treatment water tank 600 is supplied through the wash water discharge pipe 16.

The washing water is discharged from the interior of the filter media layers 510, 520 and 530 through the nozzles of the washing water discharge pipe 16 to expand the spaces between the filter media to remove contaminants.

On the other hand, the control processing unit 800 activates the air compressor 1140 at the same time as the first pump 1121 is driven. The compressed air is supplied to the air discharge pipe 16 by the air compressor 1140 and the compressed air is discharged upward through the nozzle of the air discharge pipe 16 toward the lower end surface of the filtration tank 500. The discharged compressed air backwashes the bottom surface of the filtration tank 500.

As the backwashing is completed through this process, the backwash water remaining in the filtration tank and the removed sludge move to the flow rate regulator 400 along the bottom slope 502.

The control processing unit 800 operates the second pump 1122 to transfer foreign matter such as sewage sludge and sludge to the settling tank 200 through the reverse conveying pipe 17.

For example, the first pump 1121 and the air compressor 1140 are driven for a predetermined time (e.g., 5 minutes), and then the predetermined time (e.g., 10 minutes) .

The control processing unit 800 may operate the second pump 1122 for a preset predetermined time after the first pump 1121 starts to operate or after the first pump 1122 has been operated.

FIG. 7 is a block diagram for explaining a procedure of processing rainwater introduced through the non-point pollution source reduction apparatus according to the present invention.

First, foreign matters including soil and suspended matter accumulated on the road due to rainfall and various contaminants are introduced into the sedimentation tank 200 through the inflow water path 11. Most foreign particles in the sedimentation tank 200 are mostly precipitated and removed.

The moving speed of the rainwater passing through the settling tank 200 is greatly reduced while moving to the settling tank 300. The remaining sludge is adsorbed and removed by the adsorbent 322 while moving along the path inside the sedimentation tank 300 formed in the longitudinal direction.

The rain which has passed through the settling tank 300 flows to the bottom surface of the filtration tank 500 through the flow rate adjustment tank 400 and then flows uniformly through the wedge bar 501 on the bottom surface of the filtration tank 500.

The filtered water passing through the filtration tank 500 and filtered in stages is transferred to and stored in the treatment water tank 600. The stored filtrate is discharged slowly through the drain.

On the other hand, when the influent water 11 is shut off by the operation of the electric valve 1111, the rainwater is branched through the discharge pipe 12 and moved to the discharge tank 700. In the outlet tank 700, the inflowing stormwater is drained to the storm sewer without any additional treatment.

Even when the water level in the settling tank 200 or the treatment water tank 600 is increased by more than a predetermined value, it flows over the discharge tank 700 and is discharged to the outside.

The technical idea of the present invention has been described through several embodiments.

It will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described above from the description of the present invention. Further, although not explicitly shown or described, those skilled in the art can make various modifications including the technical idea of the present invention from the description of the present invention Which is still within the scope of the present invention. The above-described embodiments described with reference to the accompanying drawings are for the purpose of illustrating the present invention, and the scope of the present invention is not limited to these embodiments.

The present invention can be applied to the field of treatment of non-point sources.

11: Inflow channel 12: Discharge tube
13: By the end of the year 14: By the drainage of the filtered water
15: air discharge pipe 16: washing water discharge pipe
17: reverse transfer pipe 18: drain pipe
21: Strainer
110: first side wall 120: second side wall
130: third side wall 140: fourth side wall
200:
210: Screen filter
211:
212: Nonwoven fabric
300: settling tank
310: barrier
322: Absorbent
400: Flow regulator
500: filtration tank
510: first material layer
520: second filter medium layer
530: third filter layer
501: Wedge bar structure
5011: Wedge bar
5012: Fixing rod
5013: Home
502: bottom slope
600: Treatment tank
700: discharge tank
800: control processor
1111: Electric valve
1121: first pump
1122: Second pump
1130: Level switch
1131: first level switch
1132: Second level switch
1133: Third level switch
1140: Air Compressor
1150: Timer

Claims (5)

A sedimentation tank 200 connected to the inflow channel 11 at one side thereof and communicating with the sedimentation tank 300 at the upper side of the other side wall and having a plurality of screen filters 210 arranged therein;
A partition wall 310 formed at a lower end thereof opened or spaced from the bottom by a predetermined distance; And a plurality of absorption nozzles 322 attached to the diaphragm 310 or diagonally downward from the both side walls to be fixed to the sedimentation tank 300 );
A flow rate regulating tank 400 communicating with the settling tank 300 to the upper end of one side wall and leading to the bottom of the filtration tank 500 at the other lower end;
A filtration tank 500 having two or more filter media layers and connected to a filtrate discharge water path 14 communicating with the treatment water tank 600 at an upper end thereof;
A processing bath (600) for storing filtered water through the filtration tank (500);
Two or more level switches 1130 mounted inside the process bath 600 and operating according to the level of the process bath 600;
A motor-operated valve 1111 for opening / closing the inflow passage 11; And
And a control processing unit (800) for controlling the operation of the level switch (1130) and the electric valve (1111)

The control processor 800 activates the electromotive valve 1111 to shut off the influent water line 11 when a predetermined time has elapsed since the initial rainfall or when the level of the filtered water has risen to any one of the level switches 1130 ,
As the flow velocity is lowered by the partition wall 310, sludge is settled in the flow rate regulator 400. In order to discharge the sludge, a reverse connection between the lower end of the flow rate regulator 400 and the needle bed 200 A delivery pipe 17 is formed,
Wherein the control processing unit (800) drives the pump after backwashing the filtration tank (500) to discharge the sludge. delete The method of claim 1, wherein
A discharge tank 700 communicating with the treatment water tank 600; And
Further comprising a discharge pipe (12) branched upward from the front end of the electric valve (1111) of the inflow passageway (11) and connected to the discharge tank (700). The method according to claim 1,
An air discharge pipe (16) installed at a position spaced apart from a lower end surface of the filtration tank (500) and having a plurality of air discharge nozzles directed toward a lower end surface of the filtration tank (500);
An air compressor 1140 connected to the air discharge pipe 16;
A washing water discharge pipe 17 installed along the inside of the filtration tank 500 and having a plurality of washing water discharge nozzles formed therein; And
And a first pump (1121) for supplying water in the treatment water tank (600) to the wash water discharge pipe (17)
Wherein the control processing unit (800) activates the air compressor (1140) and the first pump (1121). 5. The method of claim 4,
A lower inclined surface 502 downward in the direction of the flow rate regulator 400 at a lower end of the filtration tank 500; And
And a second pump 1122 for transferring the backwash water collected at the lower end of the flow rate adjusting tank 400 to the settling tank 200 through the reverse transfer pipe 17,
Wherein the control processing unit (800) activates the second pump (1122) for a predetermined time after the first pump (1121) is operated.

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