KR100962546B1 - Treatment apparatus for nonpoint pollution source - Google Patents

Abstract

PURPOSE: A nonpoint source pollutant processing unit is provided to improve process efficiency since a rotation flow speed is possible with enough vortex even if inflow flux of rainwater effluent generated at an initial or a latter part of rain fall diminishes, and to prevent a filter from being clogged. CONSTITUTION: A nonpoint source pollutant processing unit comprises the following: a base(100) in which a rainwater inflow ball(120) and a rainwater discharge hole(130) are formed; a filtration part(200) which has a cylindrical filter(210); a top inlet tube(310) forming vortex by supplying rainwater through the water inflow ball to an upper region of a filter; an influx unit(300) which has a pipe diameter which is smaller or the same in comparison with the diameter of the top inlet tube; an anchor part(400) detaining contaminants separated from the filtration part through a drain pipe(420) in which an anti-return valve(425) is attached.

Description

Non-point source treatment device {TREATMENT APPARATUS FOR NONPOINT POLLUTION SOURCE}

The present invention relates to a non-point source treatment apparatus, specifically, even when the inflow rate of rainwater flowing in is small, it is possible to generate a sufficient flow rate to form a vortex inside the filter plate, and to prevent the filter plate from clogging. The present invention relates to a non-point source treatment apparatus capable of effectively removing contaminants contained in rainwater and discharging the purified rainwater to the water system.

Representative device type nonpoint pollution abatement facilities for removing nonpoint pollutants that are generally used are vortex type facilities.

Vortex-type facility is a facility to reduce non-point contaminants by forming vortices by moving the central rotary to float floating materials such as oil and grease to the upper part, and sediment and segregation of particulate matter such as soil and contaminants to the lower part. Because the centrifugal force is used to induce rapid sedimentation of the particulate matter, when the amount of rainfall runoff, sewage, etc. is not sufficient to generate vortices at the beginning or the end of the rainfall, the particulate matter removal efficiency rapidly decreases. In addition, in the vortex type facility, since the particulate matter is precipitated by the centrifugal force generated by the vortex, it is difficult to remove sufficient contaminants due to the limitation that the suspended matter cannot be sufficiently removed. In addition, the vortex type facility is inefficient to remove fine contaminants, which occupy most of the particulate matter, and is limited in processing various non-point contaminants because the contaminable items are limited to contaminants and solids.

Therefore, it can handle various non-point pollutants such as suspended solids and prevent the decrease of rotational flow rate (vortex) due to the reduction of the inflow flow in the early or late rainfall, and the sediment in the contaminated rainwater flowing in with minimal loss head. There is a need for a method to adequately detain sex and floating pollutants until the rainfall is over.

The problem to be solved by the present invention is to improve the inlet to reach a sufficient rotational speed (speed that can form the vortex) in the non-point source treatment apparatus, even when rainfall inflow, sewage, etc. during the rainfall is small, rainfall runoff Or non-point source that improves the efficiency of removing contaminants contained in contaminated rainwater by sewage flow into the treatment device, thereby preventing pollution of the aquatic ecosystem and improving the natural environment, and effectively maintaining the treatment device after rainfall. It is to provide a processing device.

According to the present invention, the problem to be solved in the non-point source treatment apparatus, the base is formed with rainwater inlet and rainwater discharge hole; A filtering part accommodated in said base, the upper and lower parts having a cylindrical filter plate having a plurality of through holes formed in the plate surface; An upper inlet pipe which supplies rainwater to the upper region of the filter plate through the rainwater inlet hole and forms a vortex, and branches from the upper inlet pipe to have a lower diameter than or equal to that of the upper inlet pipe to the lower region of the filter plate. An inlet having a lower inlet pipe for supplying rainwater to form a vortex; It is achieved by including a detaining portion for detaining the contaminants separated in the filtering portion.

The upper inlet pipe preferably includes a multi-stage inlet having a partition wall protruding upward in the longitudinal direction inside the upper inlet pipe.

The partition wall may be provided in plural and may be lowered in height toward one side along the radial direction of the upper inflow pipe.

The partition wall may be provided behind a branching area of the lower inlet pipe along a direction of advancement of the upper inlet pipe.

The filtration unit may further include a fiber yarn bundle filter accommodated in the filter plate.

The fiber yarn bundle filter may include a plurality of fiber yarn bundles to which contaminants of rainwater introduced into the filter plate are attached; A plurality of fiber yarn fixing frames for fixing the plurality of fiber yarn bundles; It characterized in that it comprises a fixing frame support for supporting the plurality of fiber yarn fixing frame to the base.

The fiber yarn bundle uses a polypropylene or polyethylene-based yarn; The fiber yarn fixing frame is preferably supported so that the fiber yarn bundle is disposed at an angle in the range of 0 to 45 degrees with respect to the horizontal plane.

The detention section includes: a sediment detention tank for detaining contaminants precipitated from rainwater separated by the filter plate at the bottom of the filter plate; It may include a drain pipe for transferring the contaminants stacked between the filter plate and the base to the sediment holding tank.

The drain pipe is disposed at an angle in a range of 0 to 90 degrees with respect to a bottom surface of the sediment holding tank; In the end region of the drain pipe, it is preferable that a backflow prevention plate is provided to prevent backflow of contaminants in the sediment holding tank.

The through hole is preferably provided with a cover part in the rain flow direction inside the filter plate so that rain water does not immediately exit in the flow direction but exits in the opposite direction.

On the other hand, the problem to be solved is, in accordance with the present invention, the base is formed with rainwater inlet and rainwater discharge hole; A filtering part accommodated in said base, the upper and lower parts having a cylindrical filter plate having a plurality of through holes formed in the plate surface; An inlet having an upper inlet pipe having a multi-stage inlet having at least one partition wall protruding upward in the longitudinal direction to form a vortex by supplying rainwater to the upper region of the filter plate through the rainwater inlet hole; ; It may be achieved by including a detaining portion for detaining the contaminants separated in the filtration unit.

The partition wall is provided with a plurality is characterized in that the height is lowered toward one side in the radial direction of the upper inlet pipe.

The filtration unit may further include a fiber yarn bundle filter accommodated in the filter plate.

The fiber yarn bundle filter may include a plurality of fiber yarn bundles to which contaminants of rainwater introduced into the filter plate are attached; A plurality of fiber yarn fixing frames for fixing the plurality of fiber yarn bundles; It may include a fixing frame support for supporting the plurality of fiber yarn fixing frame to the base.

The fiber yarn bundle uses a polypropylene or polyethylene-based yarn; The fiber yarn fixing frame is preferably to support the fiber yarn bundle is arranged at an angle in the range of 0 to 45 degrees with respect to the horizontal plane.

The detention section includes: a sediment detention tank for detaining contaminants precipitated from rainwater separated by the filter plate at the bottom of the filter plate; It may include a drain pipe for transferring the contaminants stacked between the filter plate and the base to the sediment holding tank.

The drain pipe is disposed at an angle in a range of 0 to 90 degrees with respect to a bottom surface of the sediment holding tank; In the end region of the drain pipe, it is preferable that a backflow prevention plate is provided to prevent backflow of contaminants in the sediment holding tank.

The through hole is preferably provided with a cover part in the rain flow direction inside the filter plate so that rain water does not immediately exit in the flow direction but exits in the opposite direction.

According to the present invention, it is possible to provide a non-point source treatment apparatus capable of improving the treatment efficiency by allowing the rotational flow rate with sufficient vortex even to reduce the inflow flow rate such as rainfall runoff and sewage occurring in the early and late rainfall.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In order to clearly describe the present invention, parts irrelevant to the description are omitted, and like reference numerals designate like elements throughout the specification.

Hereinafter, the non-point source treatment apparatus 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

1 is a longitudinal cross-sectional view of a non-point source treatment apparatus 1 according to an embodiment of the present invention. As shown in FIG. 1, the non-point source treatment apparatus 1 according to the present embodiment includes a base 100, a filtration unit 200, an inlet unit 300, and a detention unit 400.

The base 100 is provided in a cylindrical shape having an upper opening 110 and embedded in the ground. However, the base 100 may be installed on the ground. The manhole cover 115 is mounted on the upper opening 110 of the base 100. In this embodiment, the base 100 is provided with a concrete material, it may be provided with a synthetic resin, plastic or metal material.

Rainwater inlet hole 120 is formed in one upper region of the side of the base 100, rainwater outlet hole 130 is formed in the other upper region. Rainwater inlet hole 120 is coupled to the upper inlet pipe 310 of the inlet 300, rainwater discharge hole 130 is coupled to the rainwater discharge pipe 135.

Rainwater inlet hole 120 and rainwater discharge hole 130 is preferably disposed facing. Here, the storm discharge hole 130 is formed at the same or lower height as the storm inflow hole 120, as shown in FIG. Thus, the rainwater introduced into the base 100 can be prevented from flowing back through the upper inlet pipe 310, and the filter plate 210, which will be described later, is always submerged in water, so there is no inflow of rainwater at the end of the rainfall. The contaminants removed by the filter plate 210 can be accumulated in the sediment holding tank 410 which will be described later by the gravity settling.

The base 100 includes a blocking plate 140 provided in the inner region of the rain discharge hole 130 to block the rain discharge hole 130 spaced apart from each other. The blocking plate 140 is provided deeper to a lower position than the bottom of the rainwater discharge hole 130. In detail, the blocking plate 140 blocks the floating oil such as oil or grease at the top of the rainwater contained in the inner space of the base 100 to be discharged to the outside through the rainwater discharge hole 130.

The overflow pipe 150 is provided in the upper region of the rainwater discharge hole 130. Overflow pipe 150 is compared to the rain discharged to the outside of the base 100, the rain flows into the interior of the rainwater is higher than the rain discharge 130, the rainwater 130, the rainwater inside the base 100, the sewage pipe, etc. It functions to discharge directly to the outside.

The filter plate accommodating part 160 accommodating the filter plate 210 is formed in the base 100. The bottom surface 165 of the filter plate receiving portion 160 supports the filter plate 210. A through portion 165a is formed in the bottom surface 165 of the filter plate accommodating part 160 so that the lower opening of the filter plate 210 communicates with the detaining portion 400 thereunder. Thus, particulate contaminants contained in the rainwater inside the filter plate 210 may be detained to the detaining part 400.

Figure 2 is a perspective view showing the structure of the upper inlet pipe 310 and the filter plate 210 of the non-point source treatment apparatus 1 according to an embodiment of the present invention, Figure 3 is a non-point source according to an embodiment of the present invention It is a cross-sectional view for showing the structure of the filter plate 210 of the processing apparatus 1. The filter unit 200 is accommodated in the base 100 to remove contaminants of rainwater flowing into the base 100. As shown in FIG. 2 and FIG. 3, the filtration unit 200 has a cylindrical filter plate 210 having upper and lower openings and a plurality of through holes 215 formed on the plate surface.

The filter plate 210 is accommodated and supported by the filter plate receiver 160 of the base 100. The filter plate 210 preferably has a substantially cylindrical shape to form a vortex in rainwater flowing through the inlet 300.

A plurality of through holes 215 are formed in the plate surface of the filter plate 210. As shown in FIGS. 2 and 3, the through hole 215 penetrates through the plate surface of the filter plate 210 so as to penetrate in the opposite direction to the movement direction of the rainwater. Here, the portion disposed inward along the radial direction of the filter plate 210 is referred to as the cover portion (210a).

The cover portion 210a may allow the rainwater to escape immediately in the tangential direction along the flow direction without leaving the filter plate 210 in the opposite direction. The role of the cover portion 210a is to prevent the rainwater containing contaminants from directly contacting the through hole 215 so that the through hole 215 is not blocked by the contaminant.

The rainwater inside the filter plate 210 continues to rotate due to the formed vortex, and the contaminants contained in the rainwater do not get stuck in the through hole 215 due to the role of the cover portion 210a and continue to rotate like the flow of the vortex. This rotational flow (vortex) is to perform the additional function of continuously cleaning the filter plate (210). Here, the end regions of the upper inlet pipe 310 and the lower inlet pipe 330, which will be described later, guide the rainwater to the inner circumferential surface of the filter plate 210 so that the rainwater moves along the direction 'A' of FIG.

As described above, since the through hole 215 is not exposed in the forward direction A of the rainwater, contaminants of a predetermined size or more flowing in the rain direction of motion A move along the inner circumferential surface of the filter plate 210 and then fall and detain. It is detained in the part 400. In addition, the contaminants contained in the moving rainwater may be prevented from blocking the through hole 215 of the filter plate 210, and thus the contaminants may move to the detention part 400 due to a cyclone phenomenon.

Meanwhile, the liquid contained in the rainwater and the dirt having a predetermined size or less may pass through the through hole 215 of the filter plate 210 and may be loaded on the bottom surface 165 of the filter plate accommodating part 160.

The diameter of the through hole 215 of the filter plate 210 is about 1 mm to 10 mm, such as 1.2 mm, 2.4 mm, or 4.7 mm, as an example of the present invention. The through hole 215 may be an elliptical shape as an example of the present invention, the diameter of the above-described through hole 215 is the diameter of the short axis of the ellipse. However, the through hole 215 may be circular. In addition, the diameter of the through hole 215 may be formed smaller than 1mm or larger than 10mm depending on the size of the contaminants contained in the rainwater or the quality of the required filtered water. The contaminants larger than or equal to the predetermined size may be larger than the diameter of the through hole 215, and may include dirt that is somewhat smaller than the diameter of the through hole 215 depending on the speed at which the contaminants move along the filter plate 210. .

As shown in FIGS. 4A to 4C, the through hole 215 has a shape similar to that of a diamond, when viewed along the direction of movement of rainwater from the outside of the filter plate 210.

The filter plate 210 is provided as a metal material as an example of the present invention, and forms a through hole 215 through press working. In addition, the mobility of the contaminants may be improved along the inner circumferential surface of the filter plate 210, and the filter plate 210 may be smoothly treated at least one of coating and plating to prevent corrosion. However, the filter plate 210 is not limited thereto, and may be formed of various materials such as plastic materials. In this case, the filter plate 210 may be treated with at least one of coating and plating, if necessary, in order to improve mobility.

Referring back to FIG. 1, the inlet 300 guides rainwater into the base 100 during rainfall. The inlet part 300 may include an upper inlet tube 310 and a lower inlet tube 330.

The upper inlet pipe 310 is provided in the rainwater inlet hole 120 to supply rainwater to the upper region of the filter plate 210 to form a vortex. The upper inlet pipe 310 guides the external rainwater to the upper region of the filter plate 210. On the other hand, the lower inlet pipe 330 is branched from the upper inlet pipe (310).

The lower inlet pipe 330 is branched from the upper inlet pipe 310 between the base 100 and the filter plate 210 to supply rainwater to the lower region of the filter plate 210 to form a vortex. The lower inlet pipe 330 may be provided to have a longitudinal cross-sectional shape of approximately “L”, or may have a shape in which an end portion thereof is bent in a vertical direction from the upper inlet pipe 310 in a diagonal direction.

The lower inlet pipe 330 preferably has a diameter smaller than or equal to that of the upper inlet pipe 310. Therefore, when the rainwater level inside the base 100 is low, the rainwater flowing into the upper inflow pipe 310 moves to the lower inflow pipe 330 having a smaller diameter, and the rainwater flowing into the lower inflow pipe 330 falls. By the potential energy to be able to have a sufficient flow rate to form a vortex in the lower region of the filter plate (210).

5 is a perspective view showing in detail the structure of the multi-stage inlet 320 of the non-point source processing apparatus 1 according to an embodiment of the present invention, Figure 6 is a non-point source processing apparatus 1 according to an embodiment of the present invention Is a cross-sectional view showing a flow path according to the flow rate of rain in the multi-stage inlet (320) of. The upper inlet pipe 310 preferably has a rectangular cross-sectional shape as shown in FIGS. 5 and 6.

The upper inlet tube 310 may include a multi-stage inlet 320 having a partition wall 325 protruding upward along the length direction in the upper inlet tube 310. One partition wall 325 may be provided depending on the diameter of the upper inlet pipe 310, or a plurality of partition walls 325 may be provided. When a plurality of partition walls 325 are provided, as shown in FIG. 6, it is preferable that the height decreases toward one side (B direction of FIG. 6) along the width direction of the upper inflow pipe 310. The partition wall 325 is preferably provided at the rear of the branched area of the lower inflow pipe 330 along the direction of rain of the upper inflow pipe 310.

On the other hand, the rainwater flowing into the upper inlet pipe 310 is bent by the wear member (not shown) of the external waterway so that it is deflected outward in the radial direction (B direction of FIG. 6). Therefore, as shown in FIG. 6A, when the rainwater flowing into the upper inflow pipe 310 is small, the rainwater is deflected to the outside of the upper inflow pipe 310 to be moved by the first partition wall 325a. Passes through the flow path that is formed. Thus, even when the flow rate is small, the flow path is formed by the first partition wall 325a, so that the cross-sectional area of the flow path may be reduced to increase the flow rate to form a vortex in the upper portion of the filter plate 210.

Here, as shown in FIG. 6B, when the flow rate of rainwater flowing into the upper inflow pipe 310 is increased, the rainwater is deflected to the outside of the upper inflow pipe 310 so that the first compartment wall 325a is Passes through the flow path formed by the second partition wall 325b that is submerged in rainwater and is higher than the first partition wall 325a. Accordingly, the flow velocity may be increased according to the inflow flow rate to form a vortex in the upper portion of the filter plate 210.

In addition, when the flow rate of rainwater flowing into the upper inlet pipe 310 increases as shown in (c) of FIG. 6, the rainwater is deflected to the outside of the upper inlet pipe 310 and thus the first partition wall 325a. And the second partition wall 325b passes through a flow path formed by the third partition wall 325c which is submerged in rainwater and is higher than the second partition wall 325b. Accordingly, the flow velocity may be increased according to the inflow flow rate to form a vortex in the upper portion of the filter plate 210.

As such, by reducing the diameter, the structure of the multi-stage inlet 320, which applies the principle of increasing the flow rate, maintains the maximum flow rate regardless of the flow rate of rainwater flowing into the upper inlet tube 310 and the upper portion of the filter plate 210. It is possible to form a vortex at.

Again, referring to FIG. 1, the detention part 400 detains contaminants separated from the filtration part 200. The detention part 400 is stacked between the sediment holding tank 410 and the filter plate 210 and the base 100 to detain contaminants precipitated from the rainwater separated by the filter plate 210 at the bottom of the filter plate 210. It may include a drain pipe 420 for transferring the contaminants to the sediment holding tank 410.

Sediment holding tank 410 is formed in the lower portion of the base (100). In this embodiment, the sediment holding tank 410 is formed of a concrete material and integrally formed with the base 100. However, the sediment holding tank 410 may be provided with a plastic or metal material, it may be provided as a separate component from the base 100. The sediment detention tank 410 detains contaminants separated from rainwater in the filter plate 210.

The drain pipe 420 communicates with the filter plate accommodating part 160 and the sediment holding tank 410 between the base 100 and the filter plate 210. An end region of the drain pipe 420 is formed of the sediment holding tank 410. The drain pipe 420 is disposed at an angle of approximately 90 degrees with respect to the vertical plane in this embodiment so as not to be perpendicular to the bottom surface. Thus, the contaminants accumulated on the bottom surface of the sediment holding tank 410 may be prevented from rising to the filter plate accommodating part 160 by riding the drain pipe 420.

The backflow prevention plate 425 is attached to an end region of the drain pipe 420. The non-return plate 425 is hingedly coupled to the drain pipe 420.

Four or more drain pipes 420 are provided along the outer diameter of the filter plate 210. In this case, each of the drain pipes 420 is preferably arranged at equal angles and at equal intervals. However, the drain pipe 420 may be provided in three or less, it may not be arranged at equal angles and equal intervals.

During the maintenance of the non-point source treatment apparatus 1 according to the present embodiment, the contaminants of the sediment holding tank 410 are extracted by using a vacuum inhaler. At this time, the drain pipe 420 may be discharged by a drop in pressure and water level by the vacuum inhaler. The non-return plate 425 coupled to the end of () is opened. Here, the contaminants accumulated between the filter plate 210 and the base 100 are moved to the sediment holding tank 410 through the drain pipe 420 and sucked into the vacuum inhaler. In addition, the backflow prevention plate 425 also serves to prevent contaminants in the sediment holding tank 410 from flowing back to the filter plate accommodating part 160.

7 is a longitudinal sectional view of the non-point source treatment apparatus 1 according to another embodiment of the present invention, Figure 8 is a structure of the fiber yarn bundle filter 220 of the non-point source processing apparatus 1 according to another embodiment of the present invention Figure is a diagram.

The filtration unit 200 of the non-point source treatment apparatus 1 according to the present invention may further include a fiber yarn bundle filter 220 accommodated inside the filter plate 210, as shown in FIGS. 7 and 8. have. The fiber yarn bundle filter 220 includes a plurality of fiber yarn bundles 230 to which contaminants of rainwater introduced into the filter plate 210 are attached, and a plurality of fiber yarn fixing frames 240 to fix the plurality of fiber yarn bundles 230. And a fixing frame support part 250 for supporting the plurality of fiber yarn fixing frames 240 to the base 100.

The fiber yarn bundle 230 is disposed to rotate in the same direction as the moving direction A of the rainwater by rotation of the rainwater flowing in the tangential direction of the filter plate 210. The fiber yarn bundle 230 is preferably made of a material having a specific gravity smaller than water, such as polypropylene or polyethylene-based yarns. During the rotational movement of rainwater in the filter plate 210, contaminants are trapped between the yarn strands and the strands of the fiber yarn bundle 230 that rotates with the rainwater, and when the water level is lowered, the fiber yarn bundle 230 having a smaller specific gravity than water is present. Yarns are spread toward the water surface and the yarn strands and strands spread between the contaminants trapped in between is gradually settled in the sediment holding tank (410). Due to this, the fiber yarn bundle 230 from which the contaminants have been removed may have an effect such as automatic cleaning.

The fiber yarn fixing frame 240 supports the fiber yarn bundle 230. The fiber yarn fixing frame 240 detachably supports the fiber yarn bundle 230. Thus, it is possible to separate the fiber yarn bundle 230 according to the situation.

The fiber yarn fixing frame 240 supports the fiber yarn bundle 230 to be inclined from the horizontal plane. Here, the fiber yarn fixing frame 240 supports the fiber yarn bundle 230 at an angle in the range of 0 to 45 degrees with respect to the horizontal plane.

The fixing frame support part 250 supports the fiber yarn fixing frame 240 to the base 100. The fixing frame support part 250 supports the plurality of fiber yarn fixing frames 240 to the base 100 to be spaced apart in the vertical direction.

The fixing frame support part 250 includes an upper coupling part 251 and a lower coupling part 253, and an upper coupling part 251 and a lower coupling part 253 overlapping with upper and lower regions of the filter plate accommodating part 160, respectively. A plurality of rows of wires 255 are inserted into the through-holes (not shown) formed in the fiber yarn fixing frame 240 and inserted into the wires 255 to be connected to each fiber yarn fixing frame in the up and down direction in the filter plate 210 to be connected. And a gap maintaining part 257 for maintaining a gap between the 240.

Hereinafter, the operating state of the non-point source treatment apparatus 1 according to the present invention will be described in detail.

First, a small amount of rainwater is introduced into the rain initial upper inlet pipe (310). Rainwater introduced into the upper inlet pipe 310 is moved to the lower inlet pipe 330, the rainwater introduced into the lower inlet pipe 330 is discharged to the lower portion of the filter plate 210 at a high speed by the potential energy due to the drop do. Here, vortices are generated in the lower region of the filter plate 210 by rainwater flowing into the lower inlet pipe 330, and the rainwater rotates along the inner circumferential surface of the filter plate 210 in the direction A of FIG. 3. In this process, the particulate contaminants contained in the rainwater do not pass through the through holes 215 of the filter plate 210 and fall into the sediment holding tank 410 and are detained.

Next, as shown in FIG. 9, when the water level inside the base 100 rises, the rainwater flowing into the upper inlet pipe 310 is moved to the multi-stage inlet 320 without moving to the lower inlet pipe 330. . Here, when the amount of rainwater flowing into the upper inlet pipe 310 is small, rainwater flows into the inside of the filter plate 210 through a flow path formed by the first partition wall 325a as shown in FIG. . Rainwater introduced into the filter plate 210 rotates to form a vortex. Thus, particulate contaminants contained in rainwater fall into the sediment holding tank 410 and is confined. On the other hand, particulate contaminants having a size smaller than the through hole 215 of the filter plate 210 may pass through the through hole 215 and be loaded on the bottom surface 165 of the filter plate accommodating part 160.

When the amount of rainwater flowing into the upper inflow pipe 310 increases, the filter plate is formed through a flow path formed by the second partition wall 325b or the third partition wall 325c as shown in FIG. 6B or 6C. 210 is introduced into. In this way, the present invention by providing a multi-stage inlet 320, it is possible to maintain a high flow rate even when the amount of rainwater flowing into the upper inlet tube 310 is small, it is possible to form a vortex inside the filter plate 210 .

Next, when the water level inside the base 100 is up to the rain discharge hole 130, the rain inside the base 100 is discharged to the outside through the rain discharge pipe 135. Here, floating contaminants such as oil or grease floating on the top of the rainwater are blocked by the blocking plate 140 and are not discharged to the rainwater discharge pipe 135. Here, when the water level inside the base 100 becomes higher, the rainwater inside the base 100 is discharged directly to the outside through the overflow pipe 150.

On the other hand, as shown in Figure 7 to 9, when the fiber yarn bundle filter 220 is provided, the contaminants contained in the rainwater is trapped between the yarn strand and the strand of the fiber yarn bundle 230, the water level is lowered When the yarn in the fiber bundle (230) having a smaller specific gravity than the water spreads toward the water surface and the yarn strands and strands are spread between the contaminants trapped therebetween gradually settle into the sediment holding tank (410).

Next, during maintenance of the non-point source treatment apparatus 1 according to the present embodiment, the contaminants of the sediment holding tank 410 are extracted using a vacuum inhaler. At this time, the backflow prevention plate 425 coupled to the end of the drain pipe 420 is opened by the drop in pressure and water level by the vacuum inhaler. Here, the contaminants accumulated between the filter plate 210 and the base 100 are moved to the sediment holding tank 410 through the drain pipe 420 and sucked into the vacuum inhaler.

As described above, according to the present invention, even when the inflow rate of the rainwater flowing in is small, it is possible to generate a sufficient flow rate to form a vortex inside the filter plate 210, to prevent the filter plate 210 is blocked. In addition, it is possible to effectively remove the contaminants contained in the rainwater to discharge the purified rainwater to the water system.

Although some embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that modifications may be made to the embodiment without departing from the spirit or spirit of the invention. . It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.

1 is a longitudinal cross-sectional view of a non-point source treatment apparatus according to an embodiment of the present invention;

Figure 2 is a perspective view showing the structure of the upper inlet pipe and the filter plate of the non-point source treatment apparatus according to an embodiment of the present invention,

Figure 3 is a cross-sectional view for showing the structure of the filter plate of the non-point source treatment apparatus according to an embodiment of the present invention,

4 is a view showing various shapes of the through-holes of the filter plate of the non-point source treatment apparatus according to an embodiment of the present invention,

Figure 5 is a perspective view showing in detail the structure of the multi-stage inlet of the non-point source treatment apparatus according to an embodiment of the present invention,

6 is a cross-sectional view showing a flow path according to the inflow flow rate of rain in the multi-stage inlet of the non-point source treatment apparatus according to an embodiment of the present invention,

7 is a longitudinal cross-sectional view of a non-point source treatment apparatus according to another embodiment of the present invention;

8 is a view showing the structure of a fiber yarn bundle filter of a non-point source treatment apparatus according to another embodiment of the present invention,

9 is a longitudinal sectional view showing an operating state of a non-point source treatment apparatus according to another embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

1: non-point source treatment apparatus 100: base

120: rainwater inlet hole 130: rainwater outlet hole

135: rainwater discharge pipe 140: blocking plate

150 Overflow Tube 160: Filter Plate Receptacle

200: filter 210: filter plate

210a: cover 215: through hole

220: fiber yarn bundle filter 230: fiber yarn bundle

240: fiber yarn fixing frame 250: fixing frame support

300: inlet 310: upper inlet pipe

320: multi-stage inlet 325: partition wall

330: lower inlet pipe 400: detention part

410: sediment holding tank 420: drain pipe

425: backflow prevention plate

Claims (20)

In the non-point source treatment apparatus, A base having rainwater inflow holes and rainwater discharge holes formed therein; It has a cylindrical filter plate formed with a plurality of vertical cross-sectional through-holes of the diamond having a cover portion in the rain flow direction so that the upper and lower portions are open and the rain water does not immediately exit in the flow direction, but exits in the opposite direction. A filtering part including a fiber yarn bundle filter including a polyethylene or polypropylene fiber yarn bundle, a fiber yarn fixing frame, and a fixing frame support; An upper inlet pipe which supplies rainwater to the upper region of the filter plate through the rainwater inlet hole and forms a vortex, and branches from the upper inlet pipe to have a lower diameter than or equal to that of the upper inlet pipe to the lower region of the filter plate. An inlet having a lower inlet pipe for supplying rainwater to form a vortex; Non-point source treatment apparatus characterized in that it comprises a detaining portion for holding the contaminant separated from the filtration unit through a drain pipe with a backflow prevention plate. delete delete delete delete delete delete delete delete delete delete In the non-point source treatment apparatus, A base having rainwater inflow holes and rainwater discharge holes formed therein; A filtering part accommodated in said base, the upper and lower parts having a cylindrical filter plate having a plurality of through holes formed in the plate surface; An upper inlet pipe having a multi-stage inlet having at least one partition wall protruding upward in a longitudinal direction to form a vortex by supplying rainwater to the upper region of the filter plate through the rainwater inlet; An inlet having a lower inlet pipe branched from the upper inlet pipe and having a lower diameter than that of the pipe to supply rainwater to the lower region of the filter plate to form a vortex; Non-point source treatment apparatus characterized in that it comprises a detention unit for holding the contaminants separated from the filtration unit. The method of claim 12, The partition wall is provided with a plurality of non-point source processing apparatus, characterized in that the height is lowered toward one side in the radial direction of the upper inlet pipe. The method of claim 12, The through-hole is a non-point source treatment apparatus characterized in that it has a longitudinal cross-sectional shape of the diamond, when viewed along the direction of movement of rain from the outside of the filter plate. The method of claim 12, The filtering unit further comprises a fiber yarn bundle filter accommodated in the filter plate. The method of claim 15, The fiber yarn bundle filter, A plurality of fiber yarn bundles to which contaminants of rainwater introduced into the filter plate are attached; A plurality of fiber yarn fixing frames for fixing the plurality of fiber yarn bundles; Non-point source treatment apparatus characterized in that it comprises a fixing frame support for supporting the plurality of fiber yarn fixing frame to the base. The method of claim 16, The fiber yarn bundle uses a polypropylene or polyethylene-based yarn; The fiber yarn fixing frame is non-point source treatment apparatus characterized in that for supporting the fiber yarn bundle is arranged at an angle in the range of 0 to 45 degrees with respect to the horizontal plane. The method of claim 12, The detention part, A sediment holding tank for holding contaminants precipitated from rainwater separated by the filter plate at the bottom of the filter plate; And a drain pipe which transfers the contaminants stacked between the filter plate and the base to the sediment holding tank. The method of claim 18, The drain pipe is disposed at an angle in a range of 0 to 90 degrees with respect to a bottom surface of the sediment holding tank; Non-point pollution source processing apparatus, characterized in that the backflow prevention plate for preventing the backflow of contaminants in the sediment holding tank in the end region of the drain pipe. The method according to any one of claims 12 to 19, The through-hole is a non-point source processing apparatus, characterized in that the cover portion is provided in the rainwater flow direction inside the filter plate so that rainwater does not escape immediately in the flow direction.

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