WO2009028893A2

WO2009028893A2 - A waterspout of non-point pollution source

Info

Publication number: WO2009028893A2
Application number: PCT/KR2008/005069
Authority: WO
Inventors: Dong Ho Kang
Original assignee: Dong Ho Kang
Priority date: 2007-08-31
Filing date: 2008-08-29
Publication date: 2009-03-05
Also published as: WO2009028893A3; KR100810415B1

Abstract

A non-point pollution source waterspout is provided. The waterspout is one of facilities to send rainwater into a drain. Rainwater passes through a filter unit adapted in a lower part of grating into which the rainwater flows with urban waste as non-point pollution source, and a discharge unit adapted in line with the filter unit and adapted being separable from the filter unit, thereby making rainwater pure in a filter box adapted in the filter unit and discharging it through a discharge pipe adapted in the filter unit. Accordingly, urban waste of toxins and pollutant, heavy metal, deposits, oil, worn-tire dust, earth and sand, exhaust gases generated in vehicles and sucked and fixed to roads, etc., which flow into watercourses and reservoirs etc., can be reduced.

Description

A WATERSPOUT OF NON-POINT POLLUTION SOURCE

Technical Field

[1] The present invention relates to a waterspout of non-point pollution source, and more particularly, to a waterspout of non-point pollution source that is a waterspout as one of facilities to send rainwater into a drain, which is capable of making rainwater pure and reducing an inflow of urban waste of toxins and pollutant, heavy metal, deposits, oil, worn-tire dust, earth and sand, exhaust gases generated in vehicles and sucked and fixed to roads, etc., which flow into watercourses and reservoirs etc., by passing the rainwater through a filter unit adapted in a lower part of grating into which the rainwater flows with urban waste as non-point pollution source, and a discharge unit adapted in line with the filter unit and adapted being separable from the filter unit, so as to make the rainwater pure in a filter box adapted in the filter unit and discharge it through a discharge pipe adapted in the filter unit. Background Art

[2] The recent industrialized and urbanization tendency increases a pavement use rate of roads for cars, parking lots, facilities for bicycles, sidewalk, parks or athletic facilities, other residential facilities etc., and its pavement materials are mainly asphalt concrete and cement concrete.

[3] Further, on the road surface, environmental pollution sources such as particles contained in exhaust gas discharged during the drive of cars, particularly diesel engine cars, or dust generated by an abrasion of tires and dusts generated by an abrasion of asphalt, are piled up together with pollution sources in the atmosphere such as exhaust fumes or dusts of factories.

[4] There may be contained material causing an incretion problem, because eu- trophication salts etc. such as nitrogen or phosphorus etc. is contained besides organic pollutant of polycyclic aromatic hydrocarbon etc. or heavy metal kinds of Cd etc.

[5] In general, a road may be classified as a roadway and a sidewalk, and rainwater generated on the roadway and sidewalk goes through a concrete drain formed in the roadway and sidewalk.

[6] That is, rainwater generated on the roadway flows into a longitudinal discharge pipe through a discharge outlet installed with the same level as the surface of roadway, and rainwater generated on sidewalk is also transferred to the longitudinal discharge pipe.

[7] However, when a heavy rain falls for a short time due to a seasonal influence such as summer etc., caused is a problem that too much rainwater to transfer once is gathered into the longitudinal discharge pipe installed in a lower part of roadway, and thus the rainwater overflows from the longitudinal discharge pipe even to roadway. Disclosure of Invention

Technical Problem

[8] Furthermore, the existing rainwater is provided with a grating installed on an upper part thereof, thus large wastes are filtered, but pollutants of earth and sand, small floating matter, oil etc. flow intact into a waterspout and discharge pipe, causing problems of a blocking of discharge pipe, precipitation, decay of floating matter etc.

[9] To improve such problems concerning of environmental pollution, facilities for non- point pollution control are installed specifically at new project places, but specifically installed non-point pollution facilities require high construction expenses and have a difficulty in the construction.

[10] Accordingly, some embodiments of the invention provide a waterspout of non-point pollution source, which employs a filter unit having a filter box to filter and clean rainwater flowing into the grating at one side of lower part of the grating and at both sides of an isolation blocking wall formed vertically downward, a discharge unit through which the rainwater flowing into the grating is discharged, and an overflow bypass path formed at an upper end of the isolation blocking wall and one end of lower part of the grating, through which when the amount of rainwater flowing into the filter unit exceeds, the exceeded rainwater flows into the discharge unit. Therefore, an inflow of urban waste of toxins and pollutant, heavy metal, deposits, oil, worn-tire dust, earth and sand, exhaust gases generated in vehicles and sucked and fixed to roads, can be reduced. Additionally, it can be prevented rainwater from overflowing to a roadway even by a heavy rain for a short time, and pollutant of earth and sand, small floating matter, oil etc. intact immediately flow into a waterspout and discharge pipe, thereby preventing a blocking effect of discharge pipe, precipitation and decay of floating matter. Further, high construction expenses for specific facilities of non-point pollution control can be prevented, and a difficulty problem of the construction can be solved. That is, polluted rainwater can be simply cleaned and discharged, thereby providing a use effect. Technical Solution

[11] According to an embodiment of the invention, a waterspout of non-point pollution source to reduce an inflow of toxins and pollutant contained in rainwater with urban wastes as non-point pollution source, which flows into a discharge pipe provided with a grating adapted at an upper part thereof and then flows into watercourses and reservoirs etc. through the discharge pipe, comprises a filter unit formed vertically downward at one side of lower part of the grating, the filter unit being provided with a filter box which is adapted inside thereof and through which the rainwater flowing into the grating is filtered and cleaned; a discharge unit, which is formed vertically downward at another side of lower part of the grating and through which the rainwater flowing into the grating is discharged; an isolation blocking wall formed vertically downward between the filter unit and the discharge unit on the grating, to separate the filter unit from the discharge unit, the isolation blocking wall being provided with a bypass path which is opened in a horizontal direction at a lower part thereof and through which the rainwater filtered through the filter unit flows into the discharge unit; and an overflow bypass path formed at an upper end of the isolation blocking wall and one end of lower part of the grating, through which when the amount of rainwater flowing into the filter unit exceeds, the exceeded rainwater flows into the discharge unit.

[12] The filter box may comprise a gravel filter having a rectangular parallelepiped shape, the gravel filter being comprised of a first frame of which a plurality of frames are connected with one another, forming a side, and a first net part forming a face and a gravel adapted in the inside thereof; a coconut filter coupled to a lower face of the gravel filter, and having a rectangular parallelepiped shape, the coconut filter being comprised of a second frame of which a plurality of frames are connected with one another, forming a side, and a second net part forming a face and a first adsorption fabric formed being united with an outer face of the second net part, and a wood/ coconut adapted in the inside thereof; a zeolite filter coupled to a lower face of the coconut filter, and having a rectangular parallelepiped shape, the zeolite filter being comprised of a third frame of which a plurality of frames are connected with one another, forming a side, and a third net part forming a face and a second adsorption fabric formed being united with an outer face of the third net part, and a sand/zeolite adapted in the inside thereof; and an aggregate filter coupled to a lower face of the zeolite filter, and having a rectangular parallelepiped shape, the aggregate filter being comprised of a fourth frame of which a plurality of frames are connected with one another, forming a side, and a fourth net part forming a face, and an aggregate adapted in the inside thereof.

[13] The first, second, third and fourth frames may individually further comprise a rubber packing that is formed in an edge type and extended horizontally from each upper part of the first, second, third and fourth frames, such that the rainwater flowing into the filter unit does not leak through a gap between inner walls of the filter box and the filter unit.

[14] The discharge unit may further comprise a discharge outlet through which the inflowing rainwater is discharged.

[15] The filter unit may comprise a non- woven fabric filter formed in a plate shape on the gravel filter. [16] On the other hand, in a lower part of the filter unit and the discharge unit there may be further comprised a sand pipe which is filled with sand therein and into which the rainwater passing through the filter unit and the discharge unit flows, and a sand layer coupled to a lower part of the sand pipe, forming a space, the space being filled with sand.

Advantageous Effects

[17] According to some embodiments of the invention, a filter unit provided with a filter box to filter and clean rainwater flowing into a grating, and a discharge unit to discharge the rainwater flowing into the grating, are adapted. Further, there is adapted an overflow bypass path formed at an upper end of the isolation blocking wall and one end of lower part of the grating, through which when the amount of rainwater flowing into the filter unit exceeds, the exceeded rainwater flows into the discharge unit. Accordingly, an inflow of urban waste of toxins and pollutant, heavy metal, deposits, oil, worn-tire dust, earth and sand, exhaust gases generated in vehicles and sucked and fixed to roads, etc., can be reduced. Additionally, it can be prevented rainwater from overflowing to a roadway even by a heavy rain for a short time, and pollutant of earth and sand, small floating matter, oil etc. intact immediately flow into a waterspout and discharge pipe, thereby preventing a blocking effect of discharge pipe, precipitation and decay of floating matter. Further, high construction expenses for specific facilities of non-point pollution control can be prevented, and a difficulty problem of the construction can be solved. That is, an installation expense can be reduced and polluted rainwater can be simply cleaned and discharged. Brief Description of the Drawings

[18] The present invention will become more fully understood from the detailed description given hereinbelow and the accompanying drawings which are given by way of illustration only, and thus are not limitative of the present invention, and wherein:

[19] FIG. 1 illustrates an entire front view of waterspout of non-point pollution source according to an embodiment of the invention;

[20] FIG. 2 illustrates a use state of waterspout of non-point pollution sourcewaterspout of non-point pollution source according to an embodiment of the invention;

[21] FIG. 3 illustrates another use of waterspout of non-point pollution source according to an embodiment of the invention;

[22] FIG. 4 shows a disassembly perspective view of filter box of waterspout of non-point pollution source according to an embodiment of the invention;

[23] FIG. 5 illustrates a combination front view of filter boxes of waterspout of non-point pollution source according to an embodiment of the invention;

[24] FIG. 6 is a plan view of waterspout of non-point pollution source according to an embodiment of the invention;

[25] FIG. 7 is a plan view of waterspout of non-point pollution source according to another embodiment of the invention; and

[26] FIG. 8 is a front view of waterspout of non-point pollution source according to still another embodiment of the invention. Mode for the Invention

[27] Embodiments of the present invention now will be described more fully hereinafter with reference to the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[28] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms used herein should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Exemplary embodiments of the present invention are more fully described below with the accompanying drawings. This invention may, however, be embodied in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein; rather, these exemplary embodiments are provided so that this disclosure is thorough and complete, and conveys the concept of the invention to those skilled in the art.

[29] Some embodiments of the invention are described in detail as follows, referring to the accompanying drawings.

[30] FIG. 1 illustrates an entire front view of waterspout of non-point pollution source according to an embodiment of the invention. FIG. 2 illustrates a use state of waterspout of non-point pollution source according to an embodiment of the invention. FIG. 3 illustrates another use of waterspout of non-point pollution source according to an embodiment of the invention. FIG. 4 shows a disassembly perspective view of filter box of waterspout of non-point pollution source according to an embodiment of the invention. FIG. 5 illustrates a combination front view of filter boxes of waterspout of non-point pollution source according to an embodiment of the invention. FIG. 6 is a plan view of waterspout of non-point pollution source according to an embodiment of the invention. FIG. 7 is a plan view of waterspout of non-point pollution source according to another embodiment of the invention. FIG. 8 is a front view of waterspout of non-point pollution source according to still another embodiment of the invention.

[31] Referring to FIGS. 1 to 8 illustrating a waterspout of non-point pollution source according to an embodiment of the invention, a waterspout of non-point pollution source 10 to reduce an inflow of toxins and pollutant contained in rainwater 60 with urban wastes as non-point pollution source, which flows into a discharge pipe 80 provided with a grating 70 adapted at an upper part thereof and then flows into watercourses and reservoirs etc. through the discharge pipe 80, comprises a filter unit 30 formed vertically downward at one side of lower part of the grating 70, the filter unit 30 being provided with a filter box 32 which is adapted in the inside thereof and through which the rainwater 60 flowing into the grating 70 is filtered and cleaned; a discharge unit 40, which is formed vertically downward at another side of lower part of the grating 70 and through which the rainwater 60 flowing into the grating 70 is discharged; an isolation blocking wall 20 formed vertically downward between the filter unit 30 and the discharge unit 40 on the grating 70, to separate the filter unit 30 from the discharge unit 40, the isolation blocking wall 20 being provided with a bypass path 42 which is opened in a horizontal direction at a lower part thereof and through which the rainwater 60 filtered through the filter unit 30 flows into the discharge unit 40; and an overflow bypass path 50 formed at an upper end of the isolation blocking wall 20 and one end of lower part of the grating 70, through which when the amount of rainwater 60 flowing into the filter unit 30 exceeds, the exceeded rainwater 60 flows into the discharge unit 40.

[32] In the waterspout of non-point pollution source 10, the filter box 32 comprises a gravel filter 100, a coconut filter 200, a zeolite filter 300 and an aggregate filter 400.

[33] The gravel filter 100 has a rectangular parallelepiped shape, and is comprised of a first frame 112 of which a plurality of frames are connected with one another, forming a side, and a first net part 120 forming a face and a gravel 140 adapted in the inside thereof.

[34] The coconut filter 200 is coupled to a lower face of the gravel filter 100, and has a rectangular parallelepiped shape, and is comprised of a second frame 212 of which a plurality of frames are connected with one another, forming a side, and a second net part 240 forming a face and a first adsorption fabric 220 formed being united with an outer face of the second net part 240, and a wood/coconut 230 adapted in the inside thereof.

[35] The zeolite filter 300 is coupled to a lower face of the coconut filter 200, and has a rectangular parallelepiped shape, and is comprised of a third frame 312 of which a plurality of frames are connected with one another, forming a side, and a third net part 340 forming a face and a second adsorption fabric 320 formed being united with an outer face of the third net part 340, and a sand/zeolite 330 adapted in the inside thereof. [36] The aggregate filter 400 is coupled to a lower face of the zeolite filter 300, and has a rectangular parallelepiped shape, and is comprised of a fourth frame 412 of which a plurality of frames are connected with one another, forming a side, and a fourth net part 420 forming a face, and an aggregate 430 adapted in the inside thereof.

[37] The first, second, third and fourth frames 112, 212, 312 and 412 individually further comprise a rubber packing 90 that is formed in an edge type and extended horizontally from each upper part of the first, second, third and fourth frames 112, 212, 312 and 412, such that the rainwater 60 flowing into the filter unit 30 does not leak through a gap between inner walls of the filter box 32 and the filter unit 30.

[38] Further, the discharge unit 40 further comprises a discharge outlet 80 through which the inflowing rainwater 60 is discharged.

[39] The filter unit 30 comprises a non- woven fabric filter 150 formed in a plate shape on the gravel filter 100.

[40] On the other hand, in a lower part of the filter unit 30 and the discharge unit 40 there is further comprised a sand pipe 510 which is filled with sand therein and into which the rainwater 60 passing through the filter unit 30 and the discharge unit 40 flows, and a sand layer 500 coupled to a lower part of the sand pipe 510, forming a space, the space being filled with sand.

[41] Operation of the waterspout of non-point pollution source 10 described above according to an embodiment of the invention is described as follows.

[42] A non-point pollution source may be a non-specific pollution source, face-pollution source, move pollution source or other water pollution sources. Unlike a point pollution source having a specific discharge path, the non-point pollution source indicates a place or area where non-point pollution material is generated through an unspecified discharge path such as water-discharge of urban road-surface or water- discharge of farmlands.

[43] That is, there may be aquatic product raising facilities changed to the title of 'other water-quality pollution source' from 'specific facilities' on the water-quality environmental preservation law, golf course facilities, transportation equipment car-repair or auto junkyard facilities, agricultural/stockbreeding/aquatic product simplified- process facilities, photo-processing facilities etc., and also may be other facilities of their added farmland, loading/unloading yard, product-storage yard, land-character transformation area etc.

[44] The non-point pollution source is mainly pollution materials flowing out together with an earth's surface outflow water when it rains, and indicates fertilizer or agricultural chemicals sprayed on farmlands, soil erosion material, stall outflow materials, traffic pollution materials, urban dusts and wastes, natural animal/plants residuals, atmosphere's pollution material falling on the earth's surface etc. [45] Thus, rainwater discharged containing all pollution materials actually becomes a main non-point pollution source. The non-point pollution source is discharged generally when it rains heavily, and so a difference of discharge amount between days and seasons is big and it is also difficult to estimate and decide a standard for the fixed amount, and has a characteristic of being greatly influenced by weather condition, geology, topography etc. with a difficulty in an artificial control, which becomes a factor of not systematically deciding the standard for a discharge.

[46] In the result of 'non-point pollution source research services '(Execution on June,

2000) for the upper stream of Paldang Dam of Han River water system as the main water supply source of capital region's citizens, a pollution load amount generated in a point pollution source of daily sewage industrial wastewater stockbreeding wastewater etc. is 136509t/year as 80.4%, and a pollution load amount generated in a non-point pollution source is 33193t/year as 19.6%, from the total generation load amount (the standard of BOD) of 169702t/year in the end of 1999.

[47] Further, in the total discharge load amount (BOD's standard), it is estimated the non- point pollution source reaches 44.5% and thus the non-point pollution source considerably influences a water-quality pollution, and also estimated the water systems of Geumgang, Nackdong-River, Youngsan-River belonging to the domestic great four water-systems have its similar aspect. Thus, as regulations for point-pollution sources with a predetermined regulation standard are kept reinforced and environmental basic facilities are expanded, an influence of the non-point pollution source on a water quality will more increase.

[48] As a solution to reduce pollution, a drainage of urban road surface can be realized by installing a storage tub, throwing down pollution material generated by rain falling initially and then discharging it. For a drainage of agricultural water discharged from farmlands, which contains much fertilizer, agricultural chemicals, can be realized by installing a storage tub, marsh purification facilities, water grass die etc. to prevent a direct inflow thereof into watercourses. In addition, concerned-regulations of the law such as the water-quality environmental preservation law etc. should be enforced, or concerned-law should be made to manage schematically.

[49] Zeolite is a general term of mineral as siliceous aluminum hydrate of alkaline and alkaline earth metal, and has colorlessness and transparency, or white and semi- transparency, and may be called arsenic. Further, there are many kinds thereof, but a commonness of much water content and in a crystal character, a shape etc.

[50] Water content silicate mineral containing sodium, aluminum, has colorlessness or white and glass shine, and is generated from a vacant hole or crack of volcanic rock or tuff etc. There may be chabasite, natrolite etc.

[51] It may be called arsenic. Further, there are many kinds, but the commonness of much water content and in a crystal character, a shape etc. Hardness is not over 6, and a specific gravity is about 2.2. It is generally colorless and white and translucent, and this name is obtained by the reason of heating, boiling and expanding through a use of a blowpipe.

[52] Almost kinds melt in hydrochloric acid and become glue shape, but a few of kinds do not melt in hydrochloric acid. As principal kinds there are analcite, fish eye stone, habazite, natrolite, heulandite, stilbite, laumontite, inesite etc. It is obtained from a cavity or rift of basic igneous rock such as basalt or diabase tuff etc., and occasionally it exists as a second mineral in granite, gneiss.

[53] Further, it may be obtained from a gold ore, other mineral vein. In a crystal structure, a combination of respective atoms becomes loosened, and the framework is left intact even when moisture filled therebetween is discharged by high heat, other minute materials can be sucked thereto. With such properties it is used as a molecular sieve separating minute materials of mutually different sizes.

[54] As shown in FIGS. 1 to 8, on the road surface, environmental pollutants such as particles contained in exhaust gas discharged during the drive of cars, particularly diesel engine cars, or dust generated by an abrasion of tires and dusts generated by an abrasion of asphalt, are piled up together with pollutants in the atmosphere such as exhaust fumes or dusts of factories. There may be contained material causing an incretion problem, because eutrophication salts etc. such as nitrogen or phosphorus etc. is contained besides organic pollutant of polycyclic aromatic hydrocarbon etc. or heavy metal kinds of Cd etc. Here, when it rains, rainwater is mixed with such pollutant and is discharged through the discharge pipe 80 into watercourses, reservoir etc., and in such steps, the rainwater 60 as rain flows into grating 70 adapted on the road surface.

[55] Further, the road surface almost is formed with a bit tilt face and thus the rainwater

60 flowing through the grating 70 flows into filter unit 30 having filter box 32 adapted in an inflow direction of rainwater by using the tilt of road surface. In the filter box 32, gravel filter 100 is adapted on an upper part thereof, and in its lower part, coconut filter 200 is adapted, and in its lower part, zeolite filter 300 is adapted, and also in its lower part, aggregate filter 400 is adapted. When in such configuration the rainwater 60 passes through the filter box 32, the rainwater 60 is discharged into discharge outlet 80 adapted in the discharge unit 40, through the discharge unit 40 which is adapted at one side of lower part of the grating 70 and whose lower end is downward tilted as compared with the filter unit 30, in a state that pollution material has been filtered, and then the cleaned rainwater 60 flows into watercourses or reservoir.

[56] Further, isolation blocking wall 20 formed vertically downward between the filter unit 30 and the discharge unit 40 on a center part of the grating 70, is adapted to separate the filter unit 30 from the discharge unit 40, the isolation blocking wall 20 being provided with a bypass path 42 which is opened in a horizontal direction at a lower part thereof and through which the rainwater 60 filtered through the filter unit 30 flows into the discharge unit 40. Additionally, an overflow bypass path 50 is formed at an upper end of the isolation blocking wall 20 and one end of lower part of the grating 70, through which when the amount of rainwater 60 flowing into the filter unit 30 exceeds, the exceeded rainwater 60 flows into the discharge unit 40.

[57] Furthermore, the gravel filter 100 has a rectangular parallelepiped shape, and is comprised of a first frame 112 of which a plurality of frames are connected with one another, forming a side, and a first net part 120 forming a face and a gravel 140 adapted in the inside thereof. The coconut filter 200 adapted at a lower end of the gravel filter 100 has a rectangular parallelepiped shape, and is comprised of a second frame 212 of which a plurality of frames are connected with one another, forming a side, and a second net part 240 forming a face and a first adsorption fabric 220 formed being united with an outer face of the second net part 240, and a wood/coconut 230 adapted in the inside thereof. The zeolite filter 300 adapted at a lower end of the coconut filter 200 has a rectangular parallelepiped shape, and is comprised of a third frame 312 of which a plurality of frames are connected with one another, forming a side, and a third net part 340 forming a face and a second adsorption fabric 320 formed being united with an outer face of the third net part 340, and a sand/zeolite 330 adapted in the inside thereof. The aggregate filter 400 adapted at a lower end of the zeolite filter 300 has a rectangular parallelepiped shape, and is comprised of a fourth frame 412 of which a plurality of frames are connected with one another, forming a side, and a fourth net part 420 forming a face, and an aggregate adapted in the inside thereof.

[58] The rainwater 60 flows into the gravel filter 100, and floating matter, cigarette-ends, wastes, dusts of worn-tire etc. mixed in the rainwater 60 are filtered by gravels 140 adapted in the gravel filter 100, and then the rainwater 60 passing through the coconut filter 200 is filtered for pollutant of heavy metal and smoke etc. through wood/coconut 230 adapted in the coconut filter 200. Further, oil, grease etc. is filtered by the first adsorption fabric 220 united with an outer face of the second net part 240, and then the rainwater 60 flowing into the zeolite filter 300 is again filtered for pollutant of heavy metal and smoke etc. by the sand and zeolite 330. Oil, grease etc. are filtered one more by second adsorption fabric 320 united with an outer face of the third net part 34, and then the rainwater 60 flowing into the aggregate filter 400 is filtered for micro pollutants by the aggregate 430 adapted in the aggregate filter 400 and thus is cleaned. Such cleaned rainwater 60 flows into the discharge unit 40 through the bypass path 42 adapted at a lower end of the isolation blocking wall 20, and is discharged through the discharge outlet 80 adapted in the discharge unit 40, and flows into watercourses or reservoir. [59] On the other hand, when collected-rainfall exceeds a level of given amount, an exceeded rainwater 60 is not filtered through the filter unit 30, but flows backward to an upper part of the grating 70 adapted on an upper side of the filter unit 30. Here, the backward flowing rainwater 60 flows into the grating 70 adapted on an upper side of the discharge unit 40 by using the overflow bypass path 50 adapted on an upper end of the isolation blocking wall 20, and is discharged into watercourses or reservoir through the discharge outlet 80 adapted in the discharge unit 40.

[60] The filter box 32 is comprised of gravel filter 100, coconut filter 200, zeolite filter

300 and aggregate filter 400, and the filters are configured respectively separable and changeable into first, second, third and fourth frames 112, 212, 312 and 412. Thus, respective filters can be washed and burned according to a use period, and replaced with new ones.

[61] In particular, as shown in FIG. 4, rubber packing 90 is formed in an edge type and extended horizontally from each upper part of the first, second, third and fourth frames 112, 212, 312 and 412, and is formed of elastic matter so as to prevent the rainwater 60 from leaking through a gap when the rainwater 60 flows into the filter unit 30 and a gap between inner walls of the filter box 32 and the filter unit 30 is formed, that is, the rainwater flowing into the filter unit 30 can flow into the discharge unit 40 after removing the filter box 32.

[62] On the other hand, referring to FIG. 8, a non- woven fabric filter 150 of a plate shape is adapted on the gravel filter 100. The rainwater 60 flowing into the filter box 32 passes through the non- woven fabric filter 150, thereby primarily filtering floating matters, cigarette-ends, wastes, worn-tire dusts etc. mixed with the rainwater 60. Then, secondarily, floating matters, cigarette-ends, wastes, worn-tire dusts etc. mixed with the rainwater 60 may be filtered. Particularly, the non- woven fabric filter 150 is employed, thereby primarily filtering floating matters, cigarette-ends, wastes, worn-tire dusts etc. mixed with the rainwater 60, and enabling to simply, separately, remove only the non- woven fabric filter 150 and replace it with new one.

[63] Subsequently, the rainwater 60 having passed through the filter box 32 passes through the discharge unit 40. At this time, the rainwater 60 passes through a sand pipe 510 adapted in a lower part of the filter unit 30 and the discharge unit 40 and a sand layer 500 coupled to a lower part of the sand pipe 510. The sand pipe 510 and the sand layer 500 are filled with sand, through which impurity remaining in the rainwater 60 is precipitated or deposited.

[64] It will be apparent to those skilled in the art that modifications and variations can be made in the present invention without deviating from the spirit or scope of the invention. Thus, it is intended that the present invention cover any such modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents. Accordingly, these and other changes and modifications are seen to be within the true spirit and scope of the invention as defined by the appended claims.

[65] In the drawings and specification, there have been disclosed typical embodiments of the invention and, although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, the scope of the invention being set forth in the following claims.

Claims

[1] A waterspout of non-point pollution source to reduce an inflow of toxins and pollutant contained in rainwater with urban wastes as non-point pollution source, which flows into a discharge pipe provided with a grating adapted at an upper part thereof and then flows into watercourses and reservoirs etc. through the discharge pipe, the waterspout of non-point pollution source comprising: a filter unit formed vertically downward at one side of lower part of the grating, the filter unit being provided with a filter box which is adapted inside thereof and through which the rainwater flowing into the grating is filtered and cleaned; a discharge unit, which is formed vertically downward at another side of lower part of the grating and through which the rainwater flowing into the grating is discharged; an isolation blocking wall formed vertically downward between the filter unit and the discharge unit on the grating, to separate the filter unit from the discharge unit, the isolation blocking wall being provided with a bypass path which is opened in a horizontal direction at a lower part thereof and through which the rainwater filtered through the filter unit flows into the discharge unit; and an overflow bypass path formed at an upper end of the isolation blocking wall and one end of lower part of the grating, through which when the amount of rainwater flowing into the filter unit exceeds, the exceeded rainwater flows into the discharge unit, wherein the filter box comprises, a gravel filter having a rectangular parallelepiped shape, the gravel filter being comprised of a first frame of which a plurality of frames are connected with one another, forming a side, and a first net part forming a face, and a gravel adapted in the inside thereof; a coconut filter coupled to a lower face of the gravel filter, and having a rectangular parallelepiped shape, the coconut filter being comprised of a second frame of which a plurality of frames are connected with one another, forming a side, and a second net part forming a face and a first adsorption fabric formed being united with an outer face of the second net part, and a wood/coconut adapted in the inside thereof; a zeolite filter coupled to a lower face of the coconut filter, and having a rectangular parallelepiped shape, the zeolite filter being comprised of a third frame of which a plurality of frames are connected with one another, forming a side, and a third net part forming a face and a second adsorption fabric formed being united with an outer face of the third net part, and a sand/zeolite adapted in the inside thereof; and an aggregate filter coupled to a lower face of the zeolite filter, and having a rectangular parallelepiped shape, the aggregate filter being comprised of a fourth frame of which a plurality of frames are connected with one another, forming a side, and a fourth net part forming a face, and an aggregate adapted in the inside thereof.

[2] The waterspout of claim 1, wherein the first, second, third and fourth frames each further comprise a rubber packing that is formed in an edge type and extended horizontally from each upper part of the first, second, third and fourth frames, such that the rainwater flowing into the filter unit does not leak through a gap between inner walls of the filter box and the filter unit.

[3] The waterspout of claim 1, wherein the discharge unit further comprises a discharge outlet through which the inflowing rainwater is discharged.

[4] The waterspout of claim 1, wherein the filter unit comprises a non- woven fabric filter formed in a plate shape on the gravel filter.

[5] The waterspout of claim 1, wherein the filter unit and the discharge unit further comprise in a lower part thereof, a sand pipe which is filled with sand therein and into which the rainwater passing through the filter unit and the discharge unit flows, and a sand layer coupled to a lower part of the sand pipe, forming a space, the space being filled with sand.