Integrated non-point pollution decrease apparatus

Abstract

The present disclosure relates to an integrated non-point source pollution reduction device in which a pretreatment function, a filtration function, and a backwashing function are integrated. An integrated non-point source pollution reduction device according to one embodiment of the present disclosure includes a filtration tank configured to filter rainwater flowing into the tank and discharge it to the outside, in which a filter material is disposed inside; a pretreatment chamber configured to settle pollutants contained in rainwater flowing in through a first inlet pipe penetrating one side wall of the filtration tank on the bottom surface, and a continuous filter material washing device configured to float the filter material and wash it, in which the filter material is installed inside the filtration tank.

Description

Technology Field

[0001] The present disclosure relates to a non-point source pollution reduction device, and more specifically, to an integrated non-point source pollution reduction device in which a pretreatment function, a filtration function, and a backwashing function are integrated. Background Technology

[0002] Non-point source pollution reduction devices are installed to remove or reduce pollutants that flow into rivers along with rainwater from non-point sources originating in specific areas such as roads, farmlands, and construction sites.

[0003] Looking at the general configuration of a conventional non-point source pollution reduction device, a pretreatment tank and a filtration tank are partitioned and formed, a filter is installed inside the filtration tank, and means for delivering high-pressure washing water and compressed air into the filtration tank are provided as a means for backwashing the filter and filter material contaminated by the filtration action.

[0004] However, these conventional non-point source pollution reduction devices require a large amount of space because they must be equipped with separate pretreatment and filtration tanks, and the equipment cost increases as separate backwash water supply facilities, such as water supply means or backwash water storage tanks, pumps, and compressors, are required to wash the filters and filter media. In addition, there is a problem that practicality may be reduced because a considerable amount of labor and time must be invested in disassembling the device for backwashing and during the backwashing operation, and the operation of the device must be stopped during the backwashing operation. Prior art literature

[0005] Republic of Korea Registered Patent No. 10-1921501 (Registered Nov. 19, 2018) The problem to be solved

[0006] The present disclosure aims to solve the problems of the aforementioned prior art and provides a non-point source pollution reduction device with reduced equipment costs.

[0007] In addition, the present disclosure aims to provide a non-point source pollution reduction device that solves the problem of reduced practicality due to maintenance, such as backwashing operations. means of solving the problem

[0008] Representative configurations of the present disclosure for achieving the above objectives are as follows.

[0009] An integrated non-point source pollution reduction device according to one embodiment of the present disclosure comprises: a filtration tank configured to filter rainwater flowing into the tank and discharge it to the outside, wherein a filter material is disposed therein; a pretreatment chamber configured to settle pollutants contained in rainwater flowing in through a first inlet pipe penetrating one side wall of the filtration tank at the bottom surface; and a continuous filter material washing device configured to float the filter material and wash it, wherein the filter material is installed inside the filtration tank.

[0010] According to one embodiment of the present disclosure, a pretreatment chamber comprises at least one screen configured to filter contaminant particles from rainwater flowing in through an inlet pipe, a first chamber configured to settle contaminants contained in the rainwater on its bottom surface, a second chamber configured to receive rainwater that has passed through at least one screen, and a third chamber disposed below the second chamber and having at least one filter mounting hole formed on its top surface. Here, a filter configured to filter rainwater moving from the second chamber to the third chamber may be installed in the at least one filter mounting hole.

[0011] According to one embodiment of the present disclosure, a first pipe section is formed on at least one side of the third chamber, and the rainwater from the third chamber may be configured to move into the interior of the filtration tank through the first pipe section.

[0012] A non-point source pollution reduction device according to one embodiment of the present disclosure further includes an air injection pipe installed inside a third chamber, and the air injection pipe may be configured to inject air into the interior of the third chamber through an injection hole formed on its outer surface.

[0013] According to one embodiment of the present disclosure, a filter assembly is installed in a filter mounting hole, and the filter assembly may include a housing coupled to and fixed in the filter mounting hole, a filter coupled to the outer surface of the housing, and a chain installed at the top of the housing and configured to strike the inner surface of the filter.

[0014] According to one embodiment of the present disclosure, the chain may be configured to be connected to the housing through a spring.

[0015] According to one embodiment of the present disclosure, a resonant member is disposed inside a second chamber, and the resonant member may be configured to be fixed through at least one support coupled to the inner circumference of the second chamber.

[0016] According to one embodiment of the present disclosure, a weight configured to strike a resonant part may be connected to the top of the second chamber.

[0017] According to one embodiment of the present disclosure, a mesh portion traversing the interior of the filtration tank may be formed at at least one end of the inner side wall of the filtration tank.

[0018] According to one embodiment of the present disclosure, a continuous cleaning device for filter material may be configured to be fixed to a mesh portion.

[0019] According to one embodiment of the present disclosure, a pretreatment chamber may be installed at the top of a continuous washing device for filter media.

[0020] According to one embodiment of the present disclosure, a continuous filter material washing device may include a floating unit for floating the filter material, a filter material sorting unit into which the floating filter material and rainwater flow and whose interior is partitioned by at least one sorting partition, and a filter material friction unit for washing the filter material through friction with the filter material that is sorted and falls by the at least one sorting partition.

[0021] In addition, the non-point source pollution reduction device according to the present disclosure may further include other additional configurations to the extent that it does not impair the technical concept of the present disclosure. Effects of the invention

[0022] According to one embodiment of the present disclosure, a pretreatment function, a filtration function, and a backwashing function are integrated into a single device to reduce equipment costs.

[0023] In addition, maintenance can be drastically simplified by simultaneously performing backwashing of the filter material during the operation of the non-point source pollution reduction device.

[0024] In addition, according to one embodiment of the present disclosure, when compressed air is injected into water to generate air bubbles, the air bubbles rise and apply impact and vibration to the chain, spring, and weight, thereby detaching contaminants that adhere to the filter and screen and obstruct the flow of rainwater, so that the filter and screen can maintain their function for a longer period, and thereby significantly reduce the maintenance requirements. Brief explanation of the drawing

[0025] FIG. 1 is a schematic diagram showing a non-point source pollution reduction device according to one embodiment of the present disclosure. FIG. 2 is a vertical cross-sectional view briefly showing the internal structure of a non-point source pollution reduction device according to one embodiment of the present disclosure. FIG. 3 is a vertical cross-sectional view briefly showing the internal structure of a pretreatment chamber of a non-point source pollution reduction device according to one embodiment of the present disclosure. FIG. 4 is a diagram briefly illustrating the horizontal arrangement of a filter according to one embodiment of the present disclosure. FIG. 5 is a vertical cross-sectional view briefly showing the internal structure of a continuous filter material washing device according to one embodiment of the present disclosure. FIGS. 6 and FIGS. 7 are a vertical cross-sectional view and a horizontal cross-sectional view showing the internal structure of a non-point source pollution reduction device according to another embodiment of the present disclosure. FIG. 8 is a vertical cross-sectional view showing a filter assembly according to one embodiment of the present disclosure. FIG. 9 is a vertical cross-sectional view and a horizontal cross-sectional view showing the internal configuration of a second chamber according to another embodiment of the present disclosure. Specific details for implementing the invention

[0026] The embodiments described below are illustrative for the purpose of explaining the technical concept of the present disclosure, and the scope of the rights of the present disclosure is not limited to the embodiments presented below or the specific descriptions thereof.

[0027] All technical and scientific terms used in this specification have the meaning generally understood by those skilled in the art to which this disclosure pertains, unless otherwise defined, and all terms used in this specification are selected for the purpose of further clarifying this disclosure and are not selected to limit the scope of the rights of this disclosure.

[0028] Expressions such as “comprising,” “comprising,” “having,” etc. as used in this specification should be understood as open-ended terms implying the possibility of including other embodiments unless otherwise stated in the phrase or sentence containing such expressions.

[0029] Hereinafter, preferred embodiments of the present disclosure are described in detail with reference to the attached drawings so that those skilled in the art can easily implement them.

[0030] FIG. 1 is a schematic diagram showing a non-point source pollution reduction device according to one embodiment of the present disclosure. In FIG. 1, the front side walls (1031, 1032) are disassembled and the top is shown open so that the internal structure of the non-point source pollution reduction device (100) is easy to understand, but the actual non-point source pollution reduction device (100) may be formed in a sealed form.

[0031] Referring to FIG. 1, an integrated non-point source pollution reduction device (100) according to one embodiment of the present disclosure includes a pretreatment chamber (110), a filtration tank (120), and a continuous filtration material washing device (130). As such, the integrated non-point source pollution reduction device (100) is a device capable of performing pretreatment, filtration, and backwashing as a single device, and the detailed configuration for this is described in detail.

[0032] According to one embodiment of the present disclosure, rainwater is introduced into the pretreatment chamber (110) to perform the function of settling contaminants contained in the rainwater on the bottom surface. In one embodiment, the pretreatment chamber (110) may be installed above the filtration tank (120). Additionally, rainwater may be introduced into the pretreatment chamber (110) through an inlet pipe (101), and the inlet pipe (101) may be configured to penetrate one side wall of the filtration tank (120). In the illustrated embodiment, the inlet pipe (101) may penetrate the front left side wall (1031). In one embodiment, rainwater that has passed through the pretreatment chamber (110) may move from inside the pretreatment chamber (110) to the filtration tank (120) through a first pipe section (117) formed at one end.

[0033] According to one embodiment of the present disclosure, a pretreatment chamber (110) may be installed on the upper part of a continuous filter material washing device (130) described below. In one embodiment, the pretreatment chamber (110) may be fixedly installed on the upper part of the continuous filter material washing device (130). In another embodiment, the pretreatment chamber (110) may be removablely installed on the upper part of the continuous filter material washing device (130).

[0034] According to one embodiment of the present disclosure, rainwater that has passed through the pretreatment chamber (110) flows into the filtration tank (120), and the function of filtering the rainwater and discharging it to the outside is performed. In one embodiment, the filtration tank (120) may be formed in the form of a sealed container (103) having a discharge hole (102) formed at one end. In the illustrated embodiment, the filtration tank (120) is shown as a rectangular container, but it is not limited thereto and may be provided in various forms depending on the installation environment.

[0035] In one embodiment, the discharge port (102) may be formed at one end of the upper portion of the filtration tank (120) so that rainwater rises inside the filtration tank (120) and overflows through the discharge port (102). Additionally, at least one mesh portion may be formed traversing the interior of the filtration tank (120) at a position lower than the discharge port (102). The mesh portion may prevent the filter material from being discharged along with the rainwater through the discharge port (102).

[0036] In one embodiment, a filter material may be introduced into the filtration tank (120) in advance. The filter material is a conventional filtration means for adsorbing various fine pollutants contained in contaminated water, and may be in the form of granules. In one embodiment, the filter material may be formed into granules with a specific gravity of about 1.2 to 1.6 by high temperature and high pressure plastic processing, by mixing an adsorption material containing at least one of glass powder, activated carbon powder, loess powder, iron oxide powder, and aluminum powder with a foaming agent containing oxidizing components such as a carbon reducing agent, an oxidizing agent, or sulfate. This is to allow it to easily float due to the vortex and flow action of rainwater.

[0037] According to one embodiment of the present disclosure, an upper mesh portion (122) and a lower mesh portion (121) may be installed inside the filtration tank (120). The upper mesh portion (122) performs the function of preventing the filter material from being discharged through the discharge hole (102) as described above, and the lower mesh portion (121) performs the function of preventing the filter material from accumulating on the bottom surface of the filtration tank (120). This is to discharge stagnant water inside the filtration tank (120) through a pump described later.

[0038] According to one embodiment of the present disclosure, the filter material continuous washing device (130) performs the function of floating and washing the filter material inside the filter tank (120). In one embodiment, the filter material continuous washing device (130) may be installed inside the filter tank (120). Preferably, the filter material continuous washing device (130) may be positioned between the upper mesh portion (122) and the lower mesh portion (121). At this time, the filter material continuous washing device (130) may be fixedly installed on the upper mesh portion (122).

[0039] As described above, the pretreatment chamber (110) is fixed to the upper part of the continuous filter material washing device (130), so that the continuous filter material washing device (130) and the pretreatment chamber (110) can be supported by the upper mesh part (122) and arranged to float inside the filtration tank (120). Accordingly, the structure inside the filtration tank (120) can be simplified, making maintenance easier, and the problem of the filter material getting stuck between the gaps of each component and failing to perform its function can be prevented.

[0040] According to one embodiment of the present disclosure, the pretreatment chamber (110), the filtration tank (120), and the continuous washing device for filter media (130) may be formed of plastic, aluminum, or a combination of these materials. This is an example of a material that is not easily corroded by rainwater and is easy to process, making it easy to utilize in a non-point source pollution reduction device; however, the materials are not limited to these, and other materials (e.g., stainless steel) may also be utilized.

[0041] The detailed configuration of an integrated non-point source pollution reduction device according to one embodiment of the present disclosure will be described in more detail below.

[0042] FIG. 2 is a vertical cross-sectional view briefly showing the internal structure of an integrated non-point source pollution reduction device according to one embodiment of the present disclosure, and FIG. 3 is a vertical cross-sectional view briefly showing the internal structure of a pretreatment chamber of an integrated non-point source pollution reduction device according to one embodiment of the present disclosure.

[0043] Referring to FIG. 2, a pump (140) may be installed at the lower end of the lower mesh section (121) on the inner bottom surface of the filtration tank (120). The pump (140) performs the function of discharging stagnant water that is stagnant on the bottom surface of the filtration tank (120) through the stagnant water discharge pipe (150). Accordingly, the integrated non-point source pollution reduction device (100) according to the present disclosure can prevent the proliferation of microorganisms by removing water from inside the filtration tank (120) after operation ends, and maintenance of the integrated non-point source pollution reduction device (100) can also be performed after removing the water.

[0044] Referring to FIGS. 2 and 3, the pretreatment chamber (110) may be configured to include a first chamber (111), a second chamber (114), and a third chamber (116).

[0045] The first chamber (111) can perform the function of allowing initial rainwater to flow in through the inlet pipe (101) and settling contaminants contained in the rainwater on the bottom surface. In one embodiment, at least one screen configured to filter contaminant particles may be installed inside the first chamber (111). In the illustrated embodiment, a first screen (112) positioned higher than the end outlet of the inlet pipe (101) and a second screen (113) positioned between the first chamber (111) and the second chamber (114) may each be installed. Each screen prevents contaminant particles within the first chamber (111) from scattering and moving to the second chamber (114), allowing only rainwater to overflow and move to the second chamber (114).

[0046] According to one embodiment of the present disclosure, the first chamber (111) and the second chamber (114) may be configured to be separated from each other. That is, the second chamber (114) is provided in a form that is inserted and mounted from the upper side to the lower side in the center of the first chamber (111), and during maintenance, the second chamber (114) can be lifted upward to be separated from the first chamber (111). Accordingly, maintenance, such as cleaning of each chamber and replacement of the filter, can be performed by separating them, making maintenance easier. In one embodiment, the inner surface of the first chamber (111) and the outer surface of the second chamber (114) may be formed in the shape of a truncated cone, with the diameter decreasing towards the bottom. This reduces friction between the first chamber (111) and the second chamber (114), allowing for easy separation, and facilitates the insertion of the second chamber (114) upon reassembly.

[0047] The second chamber (114) performs the function of allowing clean rainwater to flow to the third chamber (116) through the filtering of rainwater. To this end, a filter (115) may be installed between the second chamber (114) and the third chamber (116). In the illustrated embodiment, the third chamber (116) is positioned below the second chamber (114), and at least one filter mounting hole is formed on the upper surface of the third chamber (116). A filter (115) is installed in each filter mounting hole to filter the rainwater moving from the second chamber (114) to the third chamber (116).

[0048] In one embodiment, the filter (115) may be provided in multiple numbers. FIG. 4 is a diagram briefly illustrating the horizontal arrangement of a filter according to one embodiment of the present disclosure. Referring thereto, a plurality of filter mounting holes (1162) are formed at predetermined intervals on the upper surface (1161) of the third chamber (116), and a filter (115) may be installed in each filter mounting hole (1162).

[0049] Meanwhile, a check valve (1141) may be installed on one side of the lower portion of the second chamber (114). The check valve (1141) allows rainwater accumulating at the bottom of the second chamber (114) to move to the first chamber (111), thereby enabling the rainwater in both the first chamber (111) and the second chamber (114) to be removed at once when removing residual rainwater inside the pretreatment chamber (110) for maintenance.

[0050] The third chamber (116) performs the function of temporarily storing rainwater from which contaminant particles have been filtered through the first chamber (111) and the second chamber (114). Additionally, a first pipe section (117) is formed on one side of the third chamber (116) so that rainwater can move into the interior of the filtration tank (120) through the first pipe section (117).

[0051] According to one embodiment of the present disclosure, an air injection pipe (118) may be installed inside the third chamber (116). The air injection pipe (118) performs the function of injecting air into the third chamber (116) during the operation of the non-point source pollution reduction device (100) to detach contaminants attached to the outer surface of the filter (115). Specifically, the air injection pipe (118) is formed to pass evenly through the internal space of the third chamber (116) (see FIG. 4), and at least one injection hole may be formed on the outer surface. Additionally, an air supply pipe (119) is connected to one end of the air injection pipe (118), and the air supply pipe (119) may extend above the pretreatment chamber (110), penetrate the upper end of the filtration tank (120), and be connected to a compressed air generator separately provided outside. When the non-point source pollution reduction device (100) is in operation and filled with rainwater, compressed air is supplied to the air injection pipe (118), and air bubbles are generated inside the third chamber (116) through the injection hole. As the air bubbles rise, they strike the upper part of the third chamber (116) and the filter (115), and through the impact and vibration caused by this, contaminants attached to the outer surface of the filter (115) can be detached.

[0052] FIG. 5 is a vertical cross-sectional view briefly illustrating the internal structure of a continuous filter material washing device (130) according to one embodiment of the present disclosure. Referring to FIG. 5, the continuous filter material washing device (130) may include a flotation unit, a filter material sorting unit (400), and a filter material friction unit (450).

[0053] The buoyancy unit performs the function of floating the filter material (F) inside the filter tank (120). According to one embodiment of the present disclosure, the buoyancy unit may include a lift pipe (131) formed vertically from the center of the continuous filter material washing device (130) toward the lower part of the filter tank (120) and an air injection unit (132) that supplies air toward the lower part inside the filter tank (120).

[0054] The air injection unit (132) performs the function of floating the filter material (F) that sinks inside the filter tank (120). In one embodiment, the air injection unit (132) is configured to spray air from the top of the continuous filter material washing device (130) through the inside of the lift pipe (131) to the bottom of the filter tank (120). At this time, the top of the air injection unit (132) may be extended to the upper side of the continuous filter material washing device (130), penetrate the pretreatment chamber (110) and the top of the filter tank (120), and be connected to a compressed air generator (136) provided separately on the outside. The air injection unit (132) is not limited to being installed in a vertical direction as described above, and may be provided in various forms capable of supplying air to float the filter material (F) that has sunk to the bottom of the filter tank (120). For example, it is also possible to insert it in a horizontal direction from the side of the filter tank (120).

[0055] The lift tube (131) performs the function of guiding the filter material (F), which is lifted by the air injection unit (132), to move into the continuous filter material washing device (130). In one embodiment, the lower end (133) of the lift tube (131) may be configured in a trumpet shape that flares outward.

[0056] The filter material sorting unit (400) receives floating filter material and rainwater and performs the function of sorting the filter material according to particle size and particle density. To this end, the filter material sorting unit (400) may include a plurality of sorting partitions (410, 420) arranged at a predetermined distance from the upper outer diameter surface of the lift pipe (131) outwardly. That is, the filter material sorting unit (400) may be configured to be partitioned by a plurality of sorting partitions (410, 420) forming a concentric circle with the lift pipe (131) on the outside of the lift pipe (131). Each sorting partition (410, 420) may have a sorting hole (411, 421) formed therein to allow the filter material (F) to be sorted according to particle size and density.

[0057] The bottom of each section partitioned by each classification partition (410, 420) can be opened so that the filter material (F) and rainwater can fall back toward the filtration tank (120). However, the outermost section (430) is a section partitioned by the densest classification perforations (421) through which only rainwater can pass and not the filter material, and the bottom is not open. Additionally, a second pipe (135) is connected to one side of the outer diameter surface of the filter material classification unit (400) so that the rainwater filtered by the filter material (F) can move back to the bottom of the filtration tank (120) through the second pipe (135).

[0058] The filter material friction unit (450) performs the function of cleaning the filter material through friction with the filter material falling after being classified by the classification partitions (410, 420). In the illustrated embodiment, the filter material friction unit (450) may be formed as a spiral stepped plate that is coupled to the inner diameter surface of the lower opening of the filter material classification unit (400) and the outer diameter surface of the lift tube (131). Through this, the filter material can be cleaned by friction with each filter material friction unit (450) as it falls.

[0059] Meanwhile, a guide wing (134) may be formed on one end of the outer diameter surface of the lower lift tube (131) of the filter material friction unit (450) to guide the direction of movement of the filter material falling through the filter material friction unit (450) outward. Through this, the washed filter material moves toward the outside of the lift tube (131), and the unwashed filter material is induced to move toward the center of the lift tube (131) by convection inside the filter tank (120) accordingly, thereby forming a movement in which the unwashed filter material rises into the lift tube (131).

[0060] According to one embodiment of the present disclosure described above, sedimentation in a pretreatment chamber (110), filtration in a filtration tank (120), and backwashing of the filter material in a continuous filter material washing device (130) can be performed simultaneously.

[0061] Meanwhile, the non-point source pollution reduction device (100) according to one embodiment of the present disclosure can be maintained through the following process.

[0062] 1) Open the top and screen of the pretreatment chamber and remove the settled contaminants.

[0063] 2) Remove, wash, and replace the filter

[0064] 3) Discharge the stagnant water at the bottom of the filter tank using a pump.

[0065] As such, the non-point source pollution reduction device according to one embodiment of the present disclosure does not require a separate backwashing process and equipment for backwashing, and maintenance can be drastically simplified by simultaneously performing backwashing of the filter material during the operation of the non-point source pollution reduction device.

[0066] Hereinafter, additional embodiments of the present disclosure will be described with reference to the drawings.

[0067] FIG. 6 is a vertical cross-sectional view and a horizontal cross-sectional view showing the internal structure of a non-point source pollution reduction device (600) according to another embodiment of the present disclosure. Referring thereto, the non-point source pollution reduction device (600) may be composed only of a structure similar to the pretreatment chamber in the above-described embodiment, without including a filtration tank and a continuous washing device for filter material. At this time, the pipe section (602) connected to the third chamber (616) may perform the same function as the discharge port (102) in the above-described embodiment. That is, rainwater flows into the first chamber (611), moves to the second chamber (614) through the first screen (612) and the second screen (613) and is filtered of pollutants, and then moves from the second chamber (614) to the third chamber (616) through the filter (615) and is filtered, so that purified water can be discharged through the pipe section (602).

[0068] According to the present embodiment, the additional purification function through the filter material is omitted, but the equipment cost is further reduced and maintenance can be made simpler, so it can be easily utilized in environments where high purification capacity is not required.

[0069] As with the above-described embodiment, an air injection pipe (618) may be installed in this embodiment as well. That is, as shown in FIG. 6 (b), an air injection pipe (618) may be formed inside the third chamber (616) to pass evenly through the internal space of the third chamber (616). However, since the continuous cleaning device for the filter material is omitted in this embodiment, the air supply pipe (619) may be configured to pass through the center of the second chamber.

[0070] In addition, in this embodiment, the first chamber (611) and the second chamber (614) may be configured to be separated from each other. That is, the second chamber (614) is provided in a form that is inserted and mounted from the upper side to the lower side in the center of the first chamber (611), and during maintenance, the second chamber (614) can be lifted upward to be separated from the first chamber (611). In the illustrated embodiment, the inner surface of the first chamber (611) and the outer surface of the second chamber (614) may be formed in the shape of a truncated cone with a diameter that decreases toward the bottom. Alternatively, they may be provided in the shape of a vertical cylinder as shown in FIG. 3.

[0071] FIG. 7 is a vertical cross-sectional view and a horizontal cross-sectional view showing the internal structure of a non-point source pollution reduction device (700) according to another embodiment of the present disclosure. Referring thereto, the non-point source pollution reduction device (700) may include a filtration tank and a pretreatment chamber. In this embodiment, a continuous cleaning device for the filter material is not included. Accordingly, although the filter material cannot be continuously cleaned during operation, a large space is formed in the center of the pretreatment chamber (710), through which the inside of the filtration tank can be easily managed.

[0072] FIG. 8 is a vertical cross-sectional view showing a filter assembly (815) according to one embodiment of the present disclosure. The filter assembly (815) is configured to include a filter and an auxiliary material, and the filter assembly (815) can be installed in a filter mounting hole (8162) to perform filtering. According to one embodiment of the present disclosure, the filter assembly (815) may include a housing (8152), a filter (8151), a housing cover (8153), and a filter cleaning part (860).

[0073] The housing (8152) is configured to fix the filter (8151) to the filter mounting hole (8162) and maintain the shape of the filter (8151), and may be composed of a cylindrical frame or a cylindrical mesh that engages with the filter mounting hole (8162). In the illustrated embodiment, a locking projection (8163) is formed at at least one end of the filter mounting hole (8162), and a hole corresponding to the locking projection (8163) is formed in the housing (8152) so that the housing (8152) can be firmly fixed to the filter mounting hole (8162).

[0074] A filter (8151) is attached to the outer or inner surface of the housing (8152). In one embodiment, the filter (8151) may be a bag filter.

[0075] The housing cover (8153) is attached to the top of the housing (8152) to allow the top of the filter assembly (815) to be opened and closed. By opening and closing the housing cover (8153), the filter cleaning unit (860), which will be described later, can be installed or removed from the housing (8152).

[0076] The filter cleaner (860) performs the function of removing contaminants that accumulate on the filter (8151). In one embodiment, the filter cleaner (860) may include a stand (861), a chain spring (862), and a chain (863). The stand (861) is coupled to the housing (8152) and performs the function of fixing the chain spring (862) and the chain (863) inside the filter assembly (815). Referring to FIG. 8 (b), the stand (861) may have a ring-shaped tripod form with the chain spring (862) connected to the center.

[0077] The chain spring (862) performs the function of increasing the mobility of the chain (863). In the illustrated embodiment, the upper end of the chain spring (862) may be connected to the support (861) and the lower end may be connected to the chain (863).

[0078] The chain (863) performs the function of removing contaminants trapped in the filter (8151) by striking the inner surface of the filter (8151). The chain shakes inside the housing (8152) by the flow of rainwater and air bubbles supplied from the air injection pipe, striking the inner surface of the filter (8151). Due to this impact, contaminants trapped in the filter (8151) are dislodged from the filter (8151), which allows the performance of the filter (8151) to be maintained for a longer period. At this time, the mobility of the chain (863) can be increased by the elastic action of the chain spring (862).

[0079] FIG. 9 is a vertical cross-sectional view and a horizontal cross-sectional view showing the internal configuration of a second chamber according to another embodiment of the present disclosure. In this embodiment, the second chamber (914) is configured to include a mesh housing (9141) and a resonant part (971), and is configured to remove contaminants trapped in the second screen (913) through the vibration of the mesh housing (9141) and the resonant part (971) according to the flow of rainwater. In one embodiment, the mesh housing (9141), the resonant part (971), and the second screen (913) may be formed of a material that is not corroded by rainwater (e.g., plastic or stainless steel) and may be installed as a replaceable or fixed type.

[0080] Specifically, a mesh housing (9141) configured to be in contact with the inner surface of the second screen (913) is inserted, and a resonant part (971) can be supported by a support (972) and positioned inside the mesh housing (9141). In this arrangement, the mesh housing (9141) and the resonant part (971) vibrate due to the flow of rainwater, and this vibration is transmitted to the second screen (913), thereby removing contaminants trapped in the second screen. Additionally, if an air injection pipe is installed, injecting compressed air through the air injection pipe causes air bubbles to rise and apply impact and vibration to the resonant part (971).

[0081] In a more preferred embodiment, a weight (981) may be connected to one end of the mesh housing (9141). In the illustrated embodiment, the weight (981) is located at the center of the mesh housing (9141) and the resonance section (971) and may be connected to the housing (8152) via a first spring (982), a second spring (985), and a third spring (986). At this time, one or more fixing bars (983, 984) may be connected between each spring to prevent excessive movement of the weight (981). Additionally, the weight (981) is configured to be connected to the spring via a chain (987) so that it can be shaken. Through this configuration, vibrations of the housing (8152) caused by the flow of rainwater and air bubbles can be amplified. Furthermore, stronger vibrations can be applied by the weight (981) shaking and striking the inner surface of the resonance section (971).

[0082] Through the various embodiments described above, contaminants that adhere to the filter and screen and obstruct the flow of rainwater are removed, thereby allowing the filter and screen to maintain their function for a longer period and significantly reducing maintenance requirements.

[0083] Although the present disclosure has been described above with specific details such as specific components, limited embodiments, and drawings, this is provided only to aid in a more comprehensive understanding of the present disclosure and is not limited to the above embodiments, and a person skilled in the art to which the present disclosure belongs may make various modifications and variations from this description.

[0084] Accordingly, the concept of the present disclosure should not be limited to the embodiments described above, and should be interpreted as falling within the scope of the concept of the present disclosure, including the claims set forth below as well as all equivalent or equivalent variations thereof. Explanation of the symbols

[0085] 100: Integrated non-point source pollution reduction device 101: Inlet pipe 110: Pretreatment chamber 111: First chamber 112: Screen 1 113: Screen 2 114: Second chamber 1141: Reverse valve 115: Filter 116: 3rd Chamber 1162: Filter Mounting Hole 117: First Office 118: Air injection piping 119: Air supply pipe 120: Filtration tank 121: Lower mesh section 122: Upper mesh section 130: Continuous filter media washing device F: Filter media 400: Filter media sorting unit 450: Filter media friction unit 815: Filter assembly 8152: Housing 862: Chain spring 863: Chain 971: Resonance section 972: Support 981: Weight

Claims

Claim 1 As an integrated non-point source pollution reduction device, it comprises a filtration tank (120) configured to filter rainwater flowing into the interior and discharge it to the outside, with a filter material (F) disposed therein; a pretreatment chamber (110) installed on the upper part of the filtration tank (120) and configured to settle pollutants contained in rainwater flowing in through an inlet pipe (101) penetrating one side wall of the filtration tank (120) on the bottom surface; and a continuous filter material washing device (130) installed inside the filtration tank (120) and configured to float the filter material (F) for washing. The pretreatment chamber (110) is installed on the upper part of the continuous filter material washing device (130) and includes at least one screen (112, 113) configured to filter pollutant particles from rainwater flowing in through the inlet pipe (101), a first chamber (111) configured to settle pollutants contained in rainwater on the bottom surface, and the at least one screen (112, It includes a second chamber (114) configured to allow rainwater passing through 113) to flow in, and a third chamber (116) disposed below the second chamber (114) and having at least one filter mounting hole (1162) formed on its upper surface, wherein a filter (115) configured to filter rainwater moving from the second chamber (114) to the third chamber (116) is installed in the at least one filter mounting hole (1162), and wherein the second chamber (114) is configured to be separated from the first chamber (111) but is configured to be inserted and mounted from the upper side to the lower side in the center of the first chamber (111), and the inner surface of the first chamber (111) and the outer surface of the second chamber (114) are formed in the shape of a truncated cone with a diameter decreasing towards the bottom, and wherein rainwater accumulating on the bottom surface of the second chamber (114) flows into the first chamber (111) A reverse valve (1141) is installed to allow movement, an air injection pipe (118) is installed inside the third chamber (116), and at least one injection hole is formed on the outer surface of the air injection pipe (118).An integrated non-point source pollution reduction device configured such that when air is injected into the interior of the third chamber (116) through at least one injection hole, air bubbles are generated, and the air bubbles rise and strike the filter (115) to detach contaminants attached to the outer surface of the filter (115). Claim 2 delete Claim 3 An integrated non-point source pollution reduction device according to claim 1, wherein a first pipe section (117) is formed on at least one side of the third chamber (116), and configured so that rainwater from the third chamber (116) moves into the interior of the filtration tank (120) through the first pipe section (117). Claim 4 delete Claim 5 An integrated non-point source pollution reduction device according to claim 1, wherein a resonance member (971) is disposed inside the second chamber (114), and the resonance member (971) is fixed through at least one support (972) coupled to the inner circumference of the second chamber (114). Claim 6 In claim 5, an integrated non-point source pollution reduction device having a weight (981) connected to the top of the second chamber (114) to strike the resonance part (971). Claim 7 An integrated non-point source pollution reduction device according to claim 1, wherein a mesh portion (122) traversing the interior of the filtration tank (120) is formed at least one end of the inner side wall of the filtration tank (120). Claim 8 In claim 7, the continuous washing device (130) of the filter material is an integrated non-point source pollution reduction device fixed to the mesh part (122). Claim 9 delete Claim 10 In claim 1, the continuous filter material washing device (130) comprises a floating unit for floating the filter material (F), a filter material classification unit (400) into which the floating filter material (F) and rainwater flow in and which is partitioned internally by at least one classification partition (410, 420), and a filter material friction unit (450) for washing the filter material (F) through friction with the filter material (F) that is classified and falls by the at least one classification partition (410, 420). Claim 11 delete

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