KR100911819B1 - Apparatus of reducing non-point pollution material - Google Patents

Abstract

An apparatus for reducing nonpoint pollutant is provided to reduce installation expenses without separate installation work etc to secure a specific location. An apparatus(10) for reducing nonpoint pollutant includes an inlet(12), a first settling tank(100), a complex filter tub, a second settling tank(300), and an outlet(14). An opening cover(16) is formed on the first settling tank, the complex filter tub, and the second settling tank. A first filtering layer is formed with a sand layer and a filter unit arranged on the sand layer.

Description

Non-point pollutant reduction device {APPARATUS OF REDUCING NON-POINT POLLUTION MATERIAL}

The present invention relates to an apparatus for reducing non-point pollutants, and more particularly, it is possible to secure a drop in the rain (or rainwater) inflow in itself, so that no separate installation work is required to secure a specific position, and a sedimentation tank and a plurality of filtrations are provided. It is possible to increase the purification efficiency of rainwater by increasing the time to purify the layer and rainwater through the filter media, and relates to a non-point pollutant reduction device that can increase the degree of purification of rainwater by filtering heavy metal components and organic matter of rainwater.

Generally, sources of water pollutants can be classified into point sources and nonpoint sources. Point sources are continuously generated at a certain point such as domestic sewage, factory wastewater, and industrial wastewater. Non-point pollutants are pollutants that are discharged along with surface runoff during rainfall, while urban dust and trash, fertilizers and pesticides applied to farmland, soil erosion, barn effluents, and air pollution It means water, etc., and it flows out in a wide area.

These non-point pollutants are difficult to artificially control because of large seasonal variation in emissions, difficult prediction and quantification, and being affected by weather conditions, topography, and geology.

Conventional nonpoint source management methods are divided into physical methods for installing and managing various treatment facilities and structures, and non-physical methods such as land use regulations.

In the case of the physical method, the vegetation type and ultrafast flocculation of the infiltration type, which requires a lot of maintenance such as the infiltration site and the infiltration trench, the artificial wetland which requires a relatively large site, the storage type such as the reservoir pond, the vegetation filtration band, the vegetation channel, etc. Although there are sewage treatment types such as sedimentation facilities, they have relatively high capacity for regulating nonpoint sources, but they are expensive and require large area for installation of treatment facilities. There was a difficulty in accepting the land.

In the case of the non-physical method, the cost is low but the efficiency is low and there is a high possibility of complaints.

In addition, once non-point pollutants enter the surface or groundwater, it is difficult to manage them.Non-point pollutant treatment increases the processing cost and becomes more difficult as it is farther away from the pollutant. It is preferable to apply, but the conventional non-point pollutant treatment has a problem in cost and efficiency in the manner of collecting and treating contaminants at the end of the drain pipe.

In order to solve this problem, Korean Patent No. 546061 "Method and Apparatus for Initially Precipitation of All Excellent Water Using Multi-Phase Filtration Facility" provides a multi-sided filtration system that can separate a high-contamination initial excellent facility and secure a large filtration area at a small area. The technology to install the facility and collect the high-contamination initial rainwater on a first-come, first-served basis to filter the whole quantity is disclosed.

However, in the case of the "initial excellent total filtration method and apparatus using a multi-side filtration system", there was a problem in that the installation cost was high such that the ground had to be excavated to secure the drop of rainwater flowing into the filtration facility from the initial excellent separation facility. .

In addition, it is difficult to increase the purification efficiency of rainwater because the rainwater is purified through the filtering facility is short, and there is no problem of causing water pollution when the outflow of microorganisms occurs because there is no strainer for filtration of microorganisms in the second half of the filtering facility.

The present invention is to solve and complement the problems caused by the conventional non-point pollutant reducing device as described above,

It is to provide a non-point pollutant reduction device that can reduce the installation cost because there is no need for installation work to secure a specific location because it can secure a free fall when it rains on its own.

An object of the present invention is to reduce the non-point pollutants to increase the purification efficiency of rainwater by using the sedimentation and oil water separation in the first half of the device, and then increase the purification time through the rainwater filter through a number of filter layers and zigzag path. To provide a device.

Still another object of the present invention is to improve the degree of purification of rainwater by filtering heavy metal components and organic matter of rainwater containing nonpoint pollutants, and to provide a nonpoint pollutant reduction device that can block the outflow of microorganisms in the latter part of the device. have.

According to the present invention for achieving the above object, in the non-point pollutant reducing device, the inlet; A first precipitation tank into which rainwater containing nonpoint pollutants enters through an inlet; A composite filtration tank in which rainwater having passed through the first precipitation tank is introduced and filtered; A second precipitation tank into which rainwater treated in the composite filtration tank is introduced; And an outlet port through which rainwater flows through the second precipitation tank; Including, but the composite filtration tank, the first filtration layer is filtered suspended matter contained in rainwater; A second filtration layer through which the fine fine suspended substances passing through the first filtration layer are filtered; A third filtration layer in which heavy metal of rainwater having passed through the second filtration layer is filtered; A fourth filtration layer through which the organic matter having passed through the third filtration layer is filtered; And a blocking wall on which one side is in contact with the inner wall of the composite filtration tank so as to be disposed to be offset from each other between the first to fourth filtration layers, and the other side is spaced apart from the inner wall of the composite filtration tank to form a zigzag filtration path. It provides a non-point pollutant reducing device comprising a.

The first filtration layer, sand layer; And a filter disposed over the sand layer, and may be configured such that a pipe from which the rainwater filtered by the filter is discharged is placed after the sand layer.

A strainer may be disposed between the fourth filtration layer and the second precipitation tank.

The fourth filter layer is a microbial layer in which microorganisms decompose organic matter, and the strainer may be configured to prevent the microorganisms from leaking.

It may be configured to include a connecting pipe disposed between the first settling tank and the composite filtration tank for introducing rainwater to the upper side of the composite filtration tank.

On the first filtration layer it may be configured so that the impact buffer for reducing the impact of rainwater flowing from the connecting pipe passage.

Between the first filtration layer and the shock absorber can be configured to form a scaffold for the operator to work in the composite filtration tank.

The first settling tank and combined filtration tank, the second settling tank may be configured to be provided with an opening and closing cover that can be entered or checked inside.

According to the apparatus for reducing non-point pollutants according to the present invention, it is possible to secure a fall when the rainfall itself is excellent, so there is no need for installation work to secure a specific location, thereby reducing the installation cost.

In addition, the present invention is provided with a precipitation tank in the first half of the device, after which the rainwater is filtered through the passage of a large number of filtration layers and zigzag, it is possible to increase the purification time of rainwater, and as a result can be obtained the effect of improving the purification efficiency.

In addition, the present invention can increase the degree of purification of rainwater by filtering the heavy metal components and organic matter of rainwater containing non-point pollutants, it is effective to prevent water pollution by microorganisms by installing a microorganism strainer in the second half. .

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. However, these drawings are for illustrative purposes only and the present invention is not limited thereto.

1 is a partial cutaway perspective view of a non-point pollutant reducing device according to an embodiment of the present invention, Figure 2 is a plan view of the non-point pollutant reducing device shown in Figure 1, Figure 3 is a non-point pollutant shown in FIG. It is sectional drawing of an abatement apparatus.

1 to 3, the non-point pollutant reducing apparatus 10 according to an embodiment of the present invention is largely the inlet 12, the first precipitation tank 100, the composite filtration tank 200, the second precipitation tank 300 And an outlet 14, each of the first settling tank 100, the composite filtration tank 200, and the second settling tank 300 are provided with an opening / closing cover 16 capable of entering / exiting or checking an interior. You will be able to work in or check the purification status of rainwater.

In the early days of rainfall, a large amount of harmful substances flow down with the rainwater, and these highly polluted nonpoint pollutants are concentrated to 5-10 mm at the beginning of the rainfall. Therefore, in the present invention, to remove the non-point pollutants by drawing the initial excellent water up to 5 ~ 10mm, to discharge the purified clean rainwater back to the river to improve the environmental pollution.

That is, in the present invention, the initial rainwater is drawn from a rectangular or circular manhole structure (not shown) in which rainwater is collected at the initial stage of rainfall, which is made through an inlet 12 connected to the manhole structure, which will be described later. It is introduced into the first settling tank 100. Although the inlet 12 is shown as one in the figure, it may be composed of two or more numbers according to the use environment of the non-point pollutant reducing device 10, etc., may be configured so that rainwater flows in various directions.

Rainwater containing non-point pollutants is introduced into the first precipitation tank 100 through the inlet 12 described above. The first sedimentation tank 100 is a component that physically separates the suspended solids such as oil and heavy sediments such as soil, sludge, and contaminants among the non-point pollutants. Floating substances including oil can be periodically removed using a nonwoven fabric, and in the case of sediment, a sediment collection container (not shown) that can be detachably attached to the lower part of the first sedimentation tank 100 can be configured to facilitate sediment treatment. In this case, a separate drain facility (not shown) for discharging the precipitate may be provided.

Rainwater that passed through the first precipitation tank 100 is filtered into the composite filtration tank 200, in the present invention by connecting between the first precipitation tank 100 and the composite filtration tank 200 described below to secure a drop during rainwater inflow It forms a connection pipe 110 to allow the rainwater flows into the upper side of the composite filtration tank 200. That is, the connecting pipe 110 is such that the first settling tank 100 and the composite filtration tank 200 are arranged on the same horizontal line to pass all the filter layers in the composite filtration tank 200 by gravity through a downflow filtration method. By playing a role, construction work such as deepening the excavation depth of the ground can be prevented in order to secure free fall during the inflow of rainwater.

The composite filtration tank 200 is a component that filters the rainwater flowing through the first precipitation tank 100 through the connection pipe line 110. The first filtration layer 210, the second filtration layer 220, and the third It comprises a filtration layer 230, the fourth filtration layer 240 and the blocking wall 206, the operator opens the opening and closing cover 16 of the composite filtration tank 200 on the top of the first filtration layer 210 Scaffolding 204 is formed to be able to enter and exit the work such as removal of foreign matter.

The rainwater flowing through the connection pipe 110 may be dissipated by a drop initially and disperse the sand layer 212 constituting the first filtration layer 210. Thus, in the present invention, the impact relief tool 202 for reducing the impact of rain on the scaffold 204 on which the rain drops fall, for example, uses a structure in which gravel is covered and covered with a metal net. Although the shock absorber 202 may mitigate the impact of rainwater, the filtration of rainwater may be performed for the first time in the composite filtration tank 200.

The first filtration layer 210 includes a sand layer 212 and a filter 214 disposed on the sand layer 212. The filter 214 is provided to compensate for the lack of the sand layer 212 function. The first filtration layer 210 is to filter again the suspended matter while passing through the first settling tank (100).

The filter 214 is used to fill the media such as zeolite, activated carbon, charcoal, anthracite, bent knight, wood chips. There are many kinds of such media, which cannot be enumerated one by one, and a variety of media suitable for the use environment of the non-point pollutant reducing device 10 may be used. In addition, the filter 214 can be used by adding or subtracting the number depending on the use environment, maintenance and management costs of the non-point pollutant reducing device 10, and the size and shape can also be changed. In addition, it is preferable that the detachable filter cloth (not shown) is wound around the outside of the filter 214 so as to be easily maintained and managed.

Rainwater entering filter 214 is directed and discharged through a separate passage, ie pipe 214a, from that filtered by sand layer 212. The rainwater discharged from the pipe 214a is mixed again with the rainwater filtered by the sand layer 212 and flows to the second filtration layer 220.

The second filtration layer 220 is a layer in which fine rainwater that has passed through the first filtration layer 210 is filtered, and thus, suspended solids (SS) included in the rainwater, that is, suspended and soluble fine particulate matter, may be filtered. The oxygen demand (BOD) is lowered, and the same media as the media used for the filter 214 may be used, or other media may be used depending on the use environment, maintenance and management costs of the non-point pollutant reducing apparatus 10, and the like.

The third filtration layer 230 is a layer for adsorbing and filtering heavy metals from rainwater that has passed through the second filtration layer 220. Activated carbon, volcanic ash, plant biomass, or the like may be used.

The fourth filtration layer 240 is a layer for decomposing and removing organic matter from the rainwater that has passed through the third filtration layer 230. In the present invention, the fourth filtration layer 240 decomposes the organic matter contained in the non-point pollutant. It consists of a microbial layer inhabited by microorganisms. The organic matter of the non-point pollutant that has been treated but not removed in the first precipitation tank 100 and the composite filtration tank 200 is decomposed by the microorganisms in the fourth filtration layer 240. To this end, the fourth filtration layer 240 is preferably to create an environment using gravel and the like so that microorganisms can inhabit and proliferate.

The barrier wall 206 is formed between the first to fourth filtration layers 210, 220, 230, and 240, that is, between the first filtration layer 210 and the second filtration layer 220, and the second filtration layer 220. It is disposed between the third filtration layer 230 and between the third filtration layer 230 and the fourth filtration layer 240, respectively. One of the barrier walls 206 is in contact with the inner wall of the composite filtration tank 200 and the other is spaced apart from the inner wall of the composite filtration tank 200 by a predetermined interval, and is disposed to be offset from each other. That is, as shown in the drawing, the barrier wall 206 disposed between the first filtration layer 210 and the second filtration layer 220 is disposed between the third filtration layer 230 and the fourth filtration layer 240. The blocking wall 206 is placed on the same vertical line, and the blocking wall 206 disposed between the second filtration layer 220 and the third filtration layer 230 is placed on another vertical line so that the first to fourth blocks may be disposed. Rainwater that passes through the filtration layers 210, 220, 230, and 240 will be zigzag. Accordingly, the time for purifying the rainwater through the media forming the first to fourth filtration layers 210, 220, 230, and 240 increases, thereby increasing the purification efficiency of the rainwater.

The second precipitation tank 300 is a component in which rainwater treated in the composite filtration tank 200 is introduced to precipitate rainwater secondly. As the organic matter is decomposed by the microorganism of the fourth filtration layer 240, the microorganism and the organic matter are aggregated to form a precipitate. In the second precipitation tank 300, the precipitate is precipitated.

On the other hand, as rainwater that has passed through the fourth filtration layer 240 flows into the second precipitation tank 300, microorganisms of the fourth filtration layer 240 may flow out together to the second precipitation tank 300. Thus, the strainer 242 is preferably disposed between the fourth filtration layer 240 and the second precipitation tank 300 to prevent the outflow of microorganisms. If the sieve 242 is disposed in the second sedimentation tank 300 to precipitate and process the rainwater passing through the sieve 242.

Outlet 14 is a component in which rainwater that has passed through the second settling tank 300 is discharged, and the rainwater that has passed through all purification processes is discharged to a river or the like. Like the inlet 12 described above, the outlet 14 may be composed of two or more numbers or may be configured to discharge rainwater in various directions.

Hereinafter, with reference to the accompanying drawings, a non-point pollutant reducing device according to the present invention according to this configuration will be described in more detail.

Referring to FIG. 3, non-point pollutants move from the ground and the like with rainwater to collect in the manholes and the like with the initial excellent rainfall during rainfall. The manhole is connected to the inlet 12 of the non-point pollutant reducing apparatus 10 according to an embodiment of the present invention, through which rainwater is introduced into the first settling tank 100.

Sediment in the non-point pollutant is settled down the first settling tank 100 by its own weight, and sedimented, oil and suspended solids rise to physically and primarily separate the flow water.

Rainwater that passed through the first settling tank 100 is connected to the lower side of the first settling tank 100 and the other side is connected to the upper side of the composite filtration tank 200 through the connecting pipe (110) It is introduced with 200 drops.

The rainwater flowing into the composite filtration tank 200 falls to the metal mesh filled with gravel, that is, the impact relief 202, and falls into the first filtration layer 210 including the sand layer 212 and the filter 214. By filtration. The filter 214 is to compensate for this because the rainwater passes through the sand layer 212 is short, and the filter cloth provided on the outside of the filter 214 is separated by the air gap to remove the filter cloth and washed with water after Can be reattached and used. Filter 214 can be used to replace the new filter when the filter medium filled in the pores. At this time, the smaller the size of the pore can increase the purification efficiency, but since the time for clogging the pores becomes difficult to maintain and manage, it is better to use an appropriate pore so as to easily maintain and manage a certain degree of purification efficiency.

The rainwater from which the suspended matter is filtered by the first filtration layer 210 flows in one direction by the blocking wall 206 below the first filtration layer 210, and the side wall in the barrier wall 206 and the composite filtration tank 200 is formed. Suspended and soluble fine particulate matter is introduced into one side of the second filtration layer 220 to be filtered through the space therebetween.

The lower part of the second filtration layer 220 is provided with a blocking wall 206 arranged alternately with the blocking wall 206 disposed below the first filtration layer 210. Instead of passing through 220 in the vertical direction, the horizontal metal passes through the space between the blocking wall 206 and the inner wall of the composite filtration tank 200 and is introduced into the third filtration layer 230 through which heavy metals are adsorbed and filtered.

Similarly to the second filtration layer 220, the third filtration layer 230 is also provided with a blocking wall 206, so that the rainwater passes through the third filtration layer 230 in the horizontal direction to filter the organic matter (the fourth filtration layer ( 240).

The rainwater passing through the first to fourth filtration layers 210, 220, 230, and 240 is zigzag by the blocking wall 206, and thus, the purification time is increased, thereby increasing the purification efficiency.

Thereafter, the rainwater that passed through the fourth filtration layer 240 flows into the second precipitation tank 300 and is again settled and discharged to the river through the outlet 14 to prevent water pollution of public water or groundwater. It will be possible.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

1 is a partial cutaway perspective view of a non-point pollutant reducing apparatus according to an embodiment of the present invention.

2 is a plan view of the non-point pollutant reducing device shown in FIG.

3 is a cross-sectional view of the non-point pollutant reducing device shown in FIG.

Explanation of symbols on the main parts of the drawings

10: non-point pollutant reducing device 12: inlet

14: outlet 16: opening and closing cover

100: first settling tank 110: connector

200: combined filtration tank 202: shock absorber

204: scaffold 206: barrier wall

210: first filtration layer 212: sand layer

214: strainer 214a: pipe

220: second filtration layer 230: third filtration layer

240: fourth filter layer 242: strainer

300: second settling tank

Claims (7)

A first sedimentation tank for removing heavy contaminants, oil and suspended solids from the initial rainwater supplied through the inlet; A composite filtration tank for filtering rainwater introduced through the first precipitation tank through a plurality of filtration layers; A connection pipe connected between the first settling tank and the composite filtration tank and introducing rainwater to the upper side of the composite filtration tank to secure a drop in the composite filtration tank and to perform downflow filtration by gravity; The composite filtration tank, A first filtration layer comprising a sand layer and a filter and a rainwater pipe that complements the filtration performance of the sand layer, and filtering the residual suspended solids contained in the rainwater; A second filtration layer for filtering suspended and soluble particulate matter from rainwater introduced through the first filtration layer; A third filtration layer for adsorption filtration of heavy metals from the rainwater passing through the second filtration layer; A fourth filtration layer made of a microbial layer in which microorganisms live to filter organic matter from rainwater that has passed through the third filtration layer; And A barrier wall disposed between each of the first to fourth filtration layers, the barrier walls being deviated from each other to form a zigzag filtration path; Non-point pollutant reduction device comprising a. According to claim 1, Second precipitation tank in which the rainwater treated in the composite filtration tank is introduced; And Non-point pollutant reducing device further comprises an outlet for discharge the rainwater passed through the second precipitation tank. delete The apparatus for reducing non-point pollutants according to claim 1, further comprising a strainer installed at an outlet of the fourth filtration layer. delete The apparatus for reducing non-point pollutants according to claim 1, wherein an impact relief tool is disposed on the first filtration layer to reduce impact of rainwater flowing from the connection pipe. The apparatus of claim 1, wherein a scaffold is formed on the first filtration layer to enable an operator to work in the composite filtration tank.

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