KR20100124403A - Facilities for decreasing non-point source - Google Patents

Abstract

PURPOSE: Facilities for decreasing a non-point pollution source are provided to deposit a precipitate on a bottom to filter a floating foreign substance through an absorbing tank to dredging the precipitate by air lifting, thereby maximally filtering a non-point pollutant in rain water. CONSTITUTION: An inlet(15) for rainwater inflow is placed on one side of a wall(12) of the first precipitation tank(20). The first precipitation tank forms a fixed space by internal partitions(14a,14d). Rainwater paths(14a1,14b1,14c1) are formed in the partitions. The second precipitation tank(30) forms a fixed space by a right partition(14b). An absorbing filter(42) is arranged inside an absorbing tank(40). An outlet(16) is formed on a partition surface of a discharging tank(50).

Description

Facility for reducing non-point source that can dredge sediment

The present invention relates to a non-point source reduction facility, and more particularly, to allow sediment to settle on the bottom in these spaces while the rainwater is discharged through the first and second settling tanks and the adsorption tank, and suspended foreign matter is adsorbed and filtered in the adsorption tank. Then, it is possible to dredge the sediment on the bottom surface through airlift, and the non-point source reduction facility capable of dredging sediment which can reduce the source of pollution by filtration of nonpoint pollutants contained in rainwater to the maximum.

In general, non-point pollution refers to pollutants being polluted by a fluid pollutant, rather than having a certain place. For example, a car, farmland, or fertilization may be used.

The source of such nonpoint pollution is called nonpoint source, and in other words, it is also called non-specific source, cotton source, mobile source, or other source of water pollution.The point source such as factory wastewater or domestic sewage has a specific discharge route. In contrast, nonpoint pollution sources refer to places or areas that generate nonpoint pollutants through unspecified emissions pathways, such as urban road drainage or agricultural land drainage.

Aquaculture farming facilities, golf course facilities, transportation equipment, maintenance or junkyard facilities, simple processing facilities for concentrated marine products, photograph processing facilities, etc., which have been renamed from `` Special Facilities '' to `` Other Water Pollution Sources '' under the Water Quality Preservation Act; Other facilities, such as product yards, product yards, and land quality change areas, are nonpoint source.

Nonpoint pollutants are mainly pollutants that are discharged along with surface runoff when it rains. Fertilizers, pesticides, soil erosions, barn spills, traffic pollutants, urban dust and garbage, and natural animals and plants Water and air pollutants that fall on the ground.

Therefore, rainwater discharged with all pollutants is actually the main point of nonpoint pollutant, and since it is usually discharged only when there is a lot of rain, it is difficult to predict and quantify the daily and seasonal emissions, and it is artificially controlled. Due to its characteristics that are affected by such difficult weather conditions, geology, and topography, there are no institutional emission standards.

As a result of the 'Non-point Pollution Source Research Service' (June 2000) on the upstream area of Paldang Dam in the Han River, the main source of water for residents of the Seoul Metropolitan Area, the total sewage load as of the end of 1999 (BOD) was 16,970 tons / year. Pollutant loads generated from point sources such as industrial wastes and livestock wastes were 13,6509 tons per year, or 80.4%, and 3,3193 tons per year, 19.6%.

In addition, the total discharge load (based on BOD) was estimated to reach 44.5% of nonpoint sources, indicating that nonpoint sources had a significant effect on water pollution.The Geum, Nakdong, and Youngsan rivers belonging to the four major watersheds It is estimated to be similar. Therefore, as the regulations on point sources with regulatory standards have been strengthened and environmental foundations are expanded, the influence of nonpoint sources on water quality will gradually increase.

As a countermeasure to reduce pollution, road drainage in urban areas should be equipped with a reservoir to settle and discharge pollutants caused by the initial rain, and agricultural drainage containing a large amount of fertilizer and pesticides from agricultural land. In order to prevent direct inflow into rivers, they should install storage tanks, wetland purification facilities, and water plants. In addition, it is necessary to reinforce relevant regulations in laws and regulations such as the Water Quality Preservation Act or to enact relevant laws in order to manage them systematically.

However, conventionally, since there is no separate facility for reducing non-point pollution sources, road drainage in urban areas is required to install storage tanks to settle and discharge pollutants caused by the initial rain. Agricultural drainage containing a large amount of fertilizers and pesticides from the water must be installed with a storage tank, wetland purification facility, water plant, etc. to prevent direct flow into rivers, or to be systematically managed. Although the relevant regulations were strengthened or related laws were enacted, these countermeasures also had limitations, making it difficult to reduce non-point pollution.

The present invention has been made to solve such a problem, and while the rainwater is discharged through the first and second settling tank and the adsorption tank, the sediment is settled to the bottom in these spaces and the floating foreign matter is adsorbed filtering in the adsorption tank The purpose of the present invention is to provide a non-point source reduction facility capable of dredging sediment that can reduce the source of contamination by maximizing the filtering of nonpoint pollutants contained in rainwater.

Thus, the non-point source reduction facility of the present invention for achieving the above object is sealed by the bottom surface and four walls and the upper surface and a plurality of partition walls provided therein; A primary precipitation tank having an inlet for rainwater inflow on one side of the wall and forming a predetermined space by an inner partition wall, and rainwater passages formed on the partition walls; A secondary sedimentation tank corresponding to the partition wall opposite to the primary precipitation tank and having a predetermined space formed by the partition wall on the right side, and having an even passage formed therein; An adsorption tank that is opposite the partition wall of the secondary sedimentation tank and has an adsorption filter disposed therein and an excellent passage is formed in the partition wall opposite to the partition wall; and a discharge tank corresponding to the partition wall of the adsorption tank and having a discharge port formed on the wall surface thereof. It is composed.

In addition, in the non-point source reduction facility according to the present invention, it is preferable that inspection means are provided on the upper surface of the main body to inspect the inside of each tank.

In addition, in the non-point source reduction facility according to the present invention, it is preferable that the inspection means is provided with a manhole on the upper surfaces of the primary and secondary sedimentation tanks and the discharge tank, and a cover is provided on the upper surface of the adsorption tank.

In addition, in the non-point source reduction facility according to the present invention, it is preferable that an inclined surface is formed on the bottom surface of the primary sedimentation tank so that the deposits are collected to one side.

In addition, in the non-point source reduction facility according to the present invention, it is preferable that an inclined surface is formed on the bottom surface of the secondary sedimentation tank so that deposits are collected at the center.

Further, in the non-point source reduction facility according to the present invention, the adsorption filter of the adsorption tank has a wall structure that is installed upright at the center of the adsorption tank, and can be taken out for replacement, before and after the adsorption filter. It is preferable that an inclined surface is formed on the bottom surface so that the deposits are collected at the center.

In addition, in the non-point source reduction facility according to the present invention, disposed in the primary and secondary sedimentation tank and the adsorption tank, the lower end of which extends to the bottom surface of the main body and the upper end thereof extends to the outside to dredge the sediment of the bottom surface. It is preferable that an air lift is further provided.

In addition, in the non-point source reduction facility according to the present invention, a blower connected to the air lift to blow air, and a collection tank for collecting the dredged sediment through the air lift and discharge the filtrate back into each tank again Is preferred.

In addition, in the non-point source reduction facility according to the present invention, the blower and the collection tank are preferably mounted in separate moving vehicles.

As described above, the non-point source reduction facility of the present invention allows sediment to settle to the bottom in these spaces while the rainwater is discharged through the primary and secondary sedimentation tanks and the adsorption tank, and the suspended foreign matter is adsorbed and filtered in the adsorption tank. By allowing the bottom surface sediment to be dredged through airlift, it is possible to filter out nonpoint pollutants contained in rainwater as much as possible to reduce the source of contamination.

Hereinafter, the present invention will be described with reference to the accompanying drawings.

As shown in Figures 1 to 5, the non-point source reduction facility according to an embodiment of the present invention is sealed by the bottom surface 11, four walls 12 and the top surface 13 and a plurality of partition walls ( The main body 10 provided with 14a to 14d and the inlet 15 for rainwater inflow on one side of the wall surface 12 are provided, and a predetermined space is formed by the inner partition walls 14a and 14d, and these partition walls ( The primary sedimentation tank 20 in which the rain passages 14a1 and 14d1 are formed in 14a and 14d, respectively, and the partition wall 14b on the right side of the primary sedimentation tank 20 are beyond the partition wall 14a opposite to the primary sedimentation tank 20. The secondary sedimentation tank 30 in which a predetermined space is formed and the rain passage 14b1 is formed in the partition wall 14b, and is opposite to the partition wall 14b of the secondary sedimentation tank 30, and an adsorption filter is formed therein. (42) is disposed and corresponds to the adsorption tank (40) with rainwater passage (14c1) formed on the opposite partition wall (14c) and across the partition wall (14c) of the adsorption tank (40), 16) It becomes the structure containing the discharge tank 50 formed.

And, the upper surface 13 of the main body 10 is provided with inspection means for inspecting the inside of each tank 20, 30, 40, 50, such inspection means, the first and second settling tank ( The manhole 60 is provided in the upper surface 13 of the 20 and 30 and the discharge tank 50, and the cover 70 is provided in the upper surface 13 of the adsorption tank 40. As shown in FIG.

In addition, the bottom surface of the primary settling tank 20 is formed with an inclined surface 22 to collect the sediment to one side toward the rain inflow direction.

In addition, an inclined surface 32 is formed on the bottom surface of the secondary sedimentation tank 30 before and after the bottom surface 11 so that the deposits are collected in the center.

The adsorption filter 42 of the adsorption tank 40 has a wall structure that is installed upright in the center of the adsorption tank 40, and can be taken out for replacement, and before the adsorption filter 42 Inclined surfaces 44 are formed on the rear bottom surface 11 so that the deposits are collected in the center.

Here, it is preferable that the material of the adsorption filter 42 use a nonwoven fabric.

In the interior of the primary and secondary sedimentation tanks 20 and 30 and the adsorption tank 40, the lower end thereof extends to the bottom surface 11 of the main body 10, and the upper end thereof extends to the inspection means, and thus the external blower 92. The air lift 80 which dredges the deposit of the bottom surface 11 outside is provided.

Then, the blower 92 is connected to the air lift 80 to blow air and the dredged sediment is collected through the air lift 80 and the filtrate is discharged back into the respective tanks 20, 30 and 40. The collection tank 94 is further provided.

Here, the blower 92 and the collection tank 94 may be mounted on a separate moving vehicle 96 to allow sediment to be moved to a separate collection place after dredging.

The non-point source reduction facility, which is an embodiment of the present invention according to such a configuration, is introduced into the primary sedimentation tank 20 through the rainwater inlet 15 and filled in the internal space, and then the secondary sedimentation tank 30 through the rainwater passage 14a1. Flows into the adsorption tank 40 through the rainwater passage 14b1, passes through the adsorption tilter 42, and then passes through the rainwater passage 14c1 to the discharge tank 50 to finally discharge the outlet 16. Through the outside.

The sediments are settled on the bottom surface 11 while passing through the tanks 20, 30, and 40, and the suspended solids are filtered out of the adsorption filter 42, so that the pollutant is completely filtered.

As such, the sediments of each of the stacked tanks 20, 30, and 40 are discharged to the external dredging device by the respective air lifts 80, and finally, the purification of rainwater is completed.

Here, the method of dredging the sediment is deposited by the discharge pressure of the blower 92 installed in a separate vehicle 96, the sediment of the bottom surface 11 through the air lift 80, the external collection tank 94 After being lifted, the filtered water is drained back into the main body 10 and the remaining sediments are collected in the collection tank 94 and moved to a separate sediment collection site through the vehicle 96 for disposal.

Through this process, rainwater, including pollutants, is cleaned and discharged to the outside.

On the other hand, each tank (20, 30, 40) can check the state of the deposits inside the tank through the manhole 60, the adsorption tank (40) inside the adsorption filter (through the cover 70) 42 is to check whether the replacement can be carried out while replacing the adsorption filter 42 at an appropriate time.

1 is a schematic plan view showing the interior of a non-point source reduction facility according to an embodiment of the present invention.

Figure 2 is a schematic plan view showing the upper end of the non-point source reduction facility according to an embodiment of the present invention.

3 is a cross-sectional view taken along the line A-A of FIG.

4 is a cross-sectional view taken along line B-B in FIG. 1.

5 is a cross-sectional view taken along the line C-C of FIG.

DESCRIPTION OF REFERENCE NUMERALS

10: body 11: bottom

12: wall surface 13: top surface

14a ~ 14d: Partition wall 14a1 ~ 14d1: Rainwater passage

20: primary sedimentation tank 22: inclined surface

30: secondary sedimentation tank 32: slope

40: adsorption tank 42: adsorption filter

44: slope 50: discharge tank

60: manhole 70: cover

80: air lift 92: blower

94: collection tank 96: vehicle

Claims (9)

A main body 10 sealed by the bottom surface 11, the four wall surfaces 12, and the upper surface 13 and having a plurality of partition walls 14a to 14d provided therein; An inlet 15 for rainwater inflow is provided on one side of the wall surface 12 to form a predetermined space by the inner partition walls 14a and 14d, and rainwater passages 14a1 and 14d1 on the partition walls 14a and 14d, respectively. Primary precipitated tank 20 is formed; Secondary cell formed over the partition wall 14a opposite to the primary settling tank 20 and having a predetermined space formed by the partition wall 14b on the right side, and the rain passage 14b1 formed on the partition wall 14b. Settling tank 30; Adsorption tank 40 corresponding to the partition wall 14b of the secondary settling tank 30, the adsorption filter 42 is disposed therein, and the rain passage 14c1 is formed on the opposite partition wall 14c. A discharge tank 50 corresponding to the partition wall 14c of the adsorption tank 40 and having a discharge port 16 formed on the wall surface 12; Non-point source reduction facility configured to include. The method of claim 1, Non-point source reduction facilities, characterized in that the inspection means for inspecting the inside of each tank (20, 30, 40, 50) on the upper surface (13) of the main body (10). The method of claim 2, The checking means, Manholes 60 are provided on the upper surfaces 13 of the primary and secondary sedimentation tanks 20 and 30 and the discharge tank 50, and a cover 70 is provided on the upper surface 13 of the adsorption tank 40. Nonpoint source reduction facility. The method of claim 1, Non-point source reduction facility, characterized in that the inclined surface 22 is formed on the bottom of the primary settling tank 20 to collect the sediment to one side. The method of claim 1, Non-point source reduction facility, characterized in that the inclined surface 32 is formed on the bottom of the secondary sedimentation tank 30 to collect the sediment to the center. The method of claim 1, The adsorption filter 42 of the adsorption tank 40 has a wall structure that is installed upright in the center of the adsorption tank 40, and can be taken out for replacement, and before the adsorption filter 42 Non-point source reduction facility, characterized in that the inclined surface (44) is formed on the rear bottom surface 11 to collect the sediment to the center. The method of claim 1, The first and second sedimentation tanks 20 and 30 and the adsorption tank 40 are disposed in the interior, the lower end of which extends to the bottom surface 11 of the main body 10 and the upper end thereof extends to the bottom surface 11 Non-point source reduction facility, characterized in that it is further provided with an air lift (80) to dredge the sediment. The method of claim 7, wherein A blower 92 connected to the air lift 80 to blow air and a dredged sediment collected through the air lift 80, and the filtrate is discharged back into the respective tanks 20, 30 and 40. Non-point source reduction facility characterized in that the tank 94 is further provided. The method of claim 8, The blower (92) and the collection tank (94) is a non-point source reduction facility, characterized in that mounted on a separate moving vehicle (96).

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