KR101010048B1 - Non-point source contaminant purification system for an early stage rain water by multi-stage treatment - Google Patents

Abstract

PURPOSE: A rainwater treatment apparatus is provided to remarkably improve purification efficiency for nonpoint source pollutants inside rainwater, and to easily maintain the apparatus. CONSTITUTION: A rainwater treatment apparatus comprises the following: a screen(1) filtering adulterations; a multi-stage filtering unit(2) for filtering soluble nonpoint source pollutants; a non-woven fabric layer(11) and a zeolite layer(12) installed on the upper side of the multi-stage filtering unit; a perforated drain pipe(3) installed on the lower side of the multi-stage filtering unit; a water collecting well(4) for discharging processing water; backward flowing prevention drain pipe(5); a pillar(7); and a multi-direction backwashing type filter(6) filled with filter medias(M).

Description

Non-point source contaminant purification system for an early stage rain water by multi-stage treatment}

The present invention relates to the treatment of non-point contaminants, and more particularly, a rainwater purification device that significantly improves the purification efficiency for non-point contaminants contained in rainwater, and makes maintenance extremely easy through blocking of the filter containing the filter medium. And a description thereof.

Generally, pollutants include point pollutants emitted from well-defined and limited point sources, such as domestic sewage, industrial waste and livestock waste, and agricultural land in unspecified areas, grasslands, forests, construction sites, mines, logging sites, Discharge areas can be divided into nonpoint pollutants emitted from an unspecified and widespread nonpoint source, such as waste treatment plants, landfills, urban areas, roads and industrial sites.

In case of point pollutants with a clear discharge point among the pollutants, a separate purification device or wastewater treatment device is installed in homes, factories, livestock farms, etc. In addition to the large discharge area, most of them remain on the earth's surface, and are the main cause of water pollution by entering the public water or groundwater such as rivers with initial rainwater.

In addition, the non-point pollutants have a specific gravity greater than that of the rainwater compared to the specific gravity of the rainwater sedimentary non-point pollutants and sediment is smaller than the rainwater does not mix in the rainwater, such as oil strips, trees, etc. that float on the upper portion It is divided into oily nonpoint pollutant and soluble nonpoint pollutant dissolved in water. This is the case of rainwater, especially with initial rainwater. However, it is important not to enter the groundwater directly.

In particular, the non-point pollutant is composed of a variety of forms, such as heavy metals, pathogenic microorganisms, organic compounds, radioactive materials, toxic substances and other contaminants or suspended solids, and is usually swept by rainwater during rainy weather, such as rivers, rivers, lakes Not only is it acting as a major contaminant of water quality by flowing into water or groundwater, but also causing great damage to the ecosystem as well as to humans.

In addition, the non-point pollutant has been reported to be able to treat more than about 80% of the total rainfall in the rainwater treatment facility capacity for about 20mm rainfall because it shows a relatively high pollution concentration in the initial rainwater runoff during rain.

Therefore, the economical and effective pollutant purification method for non-point pollutant purification in consideration of runoff characteristics during rainfall is economical because it is possible to reduce the size of the purification facility by separating and intensively purifying the initial rainwater with high pollution.

In addition, by only allowing the rainwater to flow into the purification plant, rainwater mixed with large amounts of soil and sediments generated after the initial rainwater flows out of the plant instead of flowing into the plant. Maintenance is easy when the function of is maintained normally.

The key to the rainwater purifier is the filter, but in the conventional purifier, because the excessive strain on the filtration performance of the filter, the life of the filter is short, so the frequency of maintenance of the filter is too high.

Accordingly, as a conventional technology for solving such a problem, Patent No. 10-0923234 (hereinafter referred to as 'registered patent') has an excellent ability to increase the lifespan of the filter to reduce the maintenance frequency and increase the purification efficiency through the multi-stage treatment. Purifiers have been disclosed.

However, although the above-mentioned patent has been cartridgeized in order to reduce the volume while reducing the weight of the components responsible for filtration in the purification device, the size and weight of the unit cartridge is still large and heavy.

In addition, the registered patent is a multi-stage treatment, but a multi-stage treatment system in the horizontal direction rather than a multi-stage purification in the vertical direction, there is a limit that the filtration area of the omni-directional filter itself filled with the media has to be extremely small.

That is, the registered patent has a problem in that the filtering area of the filter through which rainwater passes is small and the purification performance and efficiency are not high.

Patent Document: Registered Patent No. 10-0923234

The present invention has been made in view of the above-described problems, and the non-point pollutant contained in the initial rainwater is treated in a larger area than the conventional one, and the treatment in the vertical direction is blocked so that the media are separably stacked. In the past, multi-stage treatment is performed according to different media characteristics to efficiently purify through vertical multi-stage treatment to improve purification performance and service life. It is an object of the present invention to provide a rainwater treatment device and a method of treating the same, which allow management in a very easy manner.

In addition, an object of the present invention is to provide a rainwater treatment apparatus and a method of treating the rainwater to prevent backflow of rainwater even if rainwater is introduced in a state in which the management of the filtration device is not normally performed.

In order to achieve the above object, the present invention is a rainwater purification apparatus installed between the rainwater inlet pipe and the treated water discharge pipe;

A screen provided to filter out the impurities contained in the rainwater immediately after passing through the rainwater inlet pipe;

In the process of passing the rainwater passing through the screen in the direction of gravity, and the multi-stage stacked filter installed to filter the soluble non-point pollutants contained in the rainwater through the filter of several stages,

A perforated tube installed to be spaced apart from the multi-stage stacked filter;

A collecting well for discharged treated water connected to the hole;

A backflow prevention air hole installed to protrude above the upper surface of the multi-stage stacked type filter to allow inflow of countercurrent rainwater into the hole;

It is installed to wrap around the upper end of the reverse flow prevention hole is provided with a rainwater treatment device characterized in that it comprises a multi-directional backwash type filter is filled with a filter therein.

In this case, the multi-stage stacked type filter is made by assembling a plurality of blocked filter media, the block filter media is a cube or cuboid, the filter is filled in the frame and the lower surface of the frame can pass the rain. It is characterized in that to form a mesh (mesh) structure.

On the other hand, according to another aspect of the present invention for achieving the above object, the step of filtering the contaminants contained in the rainwater immediately after passing through the rainwater inlet pipe;

Filtering the soluble non-point pollutant contained in the rainwater by passing through the filter medium laminated in several layers in the course of passing the rainwater passing through the screen in the direction of gravity;

A rainwater treatment method through a multi-stage treatment is provided, including the step of allowing the rainwater that has passed through the above steps to be discharged after being collected through the hole.

The effects of the present invention are as follows.

The present invention is easy to maintain and replace because it is a replacement type while purifying the influent including the initial rainwater through the multi-stage treatment, effectively clean the non-point pollutants introduced with rainwater to prevent water pollution of public waters such as rivers, lakes and groundwater In addition, this provides a very useful and effective stormwater treatment device that can protect the natural ecosystem.

In addition, the rainwater treatment device of the present invention has a simple and robust structure, and the purification device is eco-friendly and manufactured in a natural type, so that the manufacturing cost can be saved, and the initial rainfall and the continuous rainfall are properly treated. This is useful and effective because it shows high purification power and high throughput.

1 is a block diagram showing the system configuration of the stormwater purification apparatus of the present invention
2 is a side cross-sectional view of the stormwater purification plant of the present invention having the configuration of FIG.
3 is a plan view of FIG.
4 is a cross-sectional view taken along line II of FIG. 1 and FIG. 2.
5 is a cross-sectional view taken along the line II-II of FIGS. 1 and 2.
6 is a cross-sectional view taken along line III-III of FIG.
7 is a perspective view of a media filling frame applied to the present invention
8 is an enlarged perspective view of the multi-directional filter of FIG. 1, a perspective view of a lid open state;
9 is a block diagram showing a system configuration according to another embodiment of the stormwater purification apparatus of the present invention.
10 is a side cross-sectional view of the stormwater purification plant having the configuration of FIG. 9.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 2 to 10.

Prior to the description of the embodiments of the present invention, non-point contaminants are divided into sedimentary nonpoint contaminants, suspended nonpoint contaminants and soluble nonpoint contaminants, all of which are heavy metals, pathogenic microorganisms, organic compounds, radioactive substances, toxic substances and other contaminants. Premise that it can contain a wide variety of forms, such as suspended solids and suspended solids.

1 is a block diagram showing the system configuration of the storm water purification facility of the present invention, Figure 2 is a side cross-sectional view showing the configuration of an embodiment of the storm water purification facility of the present invention, Figure 3 is a plan view of FIG.

4 is a cross-sectional view taken along line II of FIG. 1 and 2, FIG. 5 is a cross-sectional view taken along line II-II of FIGS. 1 and 2, and FIG. 6 is taken along line III-III of FIG. 1. It is a cross section.

On the other hand, Figure 7 is a perspective view of the filter medium is applied to the present invention, Figure 8 is an enlarged view of the multi-directional filter of FIG.

Referring to these drawings, the rainwater purifying apparatus of the present invention is installed between the rainwater inlet pipe 8 and the treated water discharge pipe 9, and filters the contaminants contained in the rainwater immediately after passing through the rainwater inlet pipe 8. Multi-stage installed to filter the soluble non-point pollutants contained in the rainwater while passing through the screen (1) and the rainwater passing through the screen (1) in the direction of gravity in the course of passing through the filter (M) of several stages A stacked filter (2), a perforated tube (3) installed so as to be spaced apart below the multi-stage stacked type filter (2), and a collecting well (4) for treatment water discharge connected to the perforated tube (3); Backflow prevention hole (5) is installed to protrude over the upper surface of the multi-stage stacked filter (2) to enable the inflow of excellent reverse flow into the hole (3) when the excellent reverse flow occurs, and around the upper end of the reverse flow prevention hole (5) Installed to surround the inside It comprises a multi-directional backwash filter (6) filled with the filter medium (M).

At this time, the multi-stage stacked filter (2) is installed to form a planar matrix structure in the interior space of the housing (H) on the lower side of the screen (1).

And, the multi-stage stacked type filter (2) is made by assembling a plurality of blocked filter medium 200, the blocked filter medium 200 is a cube or a cube structure, the inside of the frame ( M) is filled, and the lower surface of the frame forms a mesh structure in which a mesh 200a is formed to allow passage of rainwater without allowing the filter medium M to fall out.

In addition, the lower edge of the filter medium filling frame 200 is provided with a leg 200b for adjusting the height of the coupling medium and the stacking of each other, the leg 200b is provided at the upper edge of the filter medium filling frame 200 The coupling groove 200c to be inserted is provided.

On the other hand, it is preferable that the filter medium (200) constituting the multi-stage stacked filter (2) is filled with different media (M) for each stacking height.

In addition, as the filter medium (M), zeolite which is a highly adsorptive material having excellent ion exchange ability to filter out floating nonpoint pollutants and soluble nonpoint pollutants contained in rainwater, and floating nonpoint pollutants and soluble boiling points contained in rainwater Activated carbon, a porous high adsorption material for filtering contaminants, and PP (polypropylene) media are applicable.

In addition, a support 7 is installed below the multi-stage stacked type filter 2 to support a filter assembly and to secure a space between the multi-stage stacked type filter 2 and the hole tube 3.

And, the multi-directional backwash filter (5) is formed to form a mesh structure, the upper side is preferably installed in a lockable structure while the lid of the mesh structure that is opened and closed for the exchange of media (see Fig. 8). ). In particular, the multi-directional backwash filter 5 is made of a stainless steel sheet, preferably formed to form a mesh structure by perforation.

In addition, the upper end of the backflow preventing hole 5 installed through the multistage stacked type filter so as to protrude above the upper surface of the multistage stacked type filter 2 is closed or forms a mesh structure. (5) It is to provide a structure to block the inflow of the media to prevent it from entering the blockage.

In addition, gravel is laid as a base on the lower portion of the perforated pipe 3, and a nonwoven fabric layer 11 and a zeolite layer 12 are further provided on the multi-stage stacked filter 2.

On the other hand, reference numeral 10 is a manhole for facility management of the stormwater purification apparatus of the present invention.

The rainwater purification function in the stormwater purification facility of the present invention thus constructed is as follows.

When the rain falls, the sedimentary / floating non-point pollutants adhered to the ground with rainwater move along the ground and enter the separation manhole (not shown) through the collecting pipe, and the rainwater entering the separation manhole is a rainwater inflow pipe ( 8) is introduced into the purification apparatus of the present invention.

Rainwater flowing into the purification device of the present invention is first screened by the screen (1) installed on the outlet side of the rainwater inlet pipe (8) is largely filtered by the bulk floating non-point pollutants such as styrofoam or wood chips.

Then, the rainwater flowing through the screen 1 into the purifier passes through the zeolite layer 12 and the nonwoven fabric layer 11, in which oil components and fine turbidity contaminants are filtered out.

Subsequently, the rainwater passing through the zeolite layer 12 and the nonwoven fabric layer 11 in turn passes through the multi-stage stacked filter 2 positioned below the nonwoven fabric layer 11 to form a multistage structure along the direction of gravity. In this process, soluble non-point pollutants are filtered out.

Specifically, rainwater is passed through the filter pad 200 stacked from the top to the bottom to form a multi-stage stacked filter (2), inside the filter pad 200 is a zeolite or a highly adsorptive material having excellent ion exchange ability Porous high adsorption material, activated carbon, or PP (polypropylene) media is filled, so that the soluble non-point pollutant is filtered according to the media characteristics during the passage between the media.

The rainwater passing through the multi-stage stacked type filter 2 in this way falls into the space in which the air hole tube 3 is installed.

Then, the rainwater that has dropped into the space in which the perforated pipe 3 is installed is introduced into the pipe through the hole (that is, the perforated hole) formed in the perforated pipe 3 and flows into the water collecting well 4, and then, through the treated water discharge pipe. Discharged.

On the other hand, when rainwater flows in, the rainwater flowing into the processing apparatus does not normally pass through the multi-stage stacked filter 2, and the rainwater flows up, and the rainwater is collected on the multi-stage stacked filter 2, thereby raising the water level. By the reverse flow to the rainwater inlet pipe 8 side may occur, but the purification apparatus of the present invention is provided on the back side of the purification device on the plane to prevent backflow is prevented.

That is, the rainwater purifying device of the present invention is connected to the hole pipe (3) while being installed to protrude over the upper surface of the multi-stage stacked type filter (2) and the reverse flow prevention hole (5), and around the upper end of the reverse flow prevention hole (5) It is installed so as to surround the backflow prevention device composed of a multi-directional backwash type filter (6) filled with the filter medium (M) therein, the backflow phenomenon due to the rise of the water level in the rainwater purifier is prevented.

Specifically, in the situation where rainwater does not normally pass through the multi-stage stacked type filter 2, and excellent water flow is generated, rainwater is formed on the surface of the backflow preventing hole 5 that protrudes to the top of the multistage stacked type filter 2. Iii) backflow is prevented by flowing into the tube through 500;

For reference, the zeolite is a material having high hydrophilicity and an excellent ability to adsorb water molecules without damaging the crystal structure. There are natural zeolites which are naturally produced from rocks and clays, and artificial zeolites which are artificially made, and cation exchange. As a resin, it is used to remove ammonia nitrogen and heavy metals.

On the other hand, the present invention has a structure in which the multi-stage stacked filter (2) is blocked among the components constituting the storm water treatment apparatus, so that it is extremely easy to manage and replace.

Multi-stage stacked filter (2) of the present invention is made by assembling a plurality of filter medium 200, the filter medium 200 has a block structure as a cube or a cube.

That is, the inside of the frame of the filter medium filling frame 200 is filled with the filter medium (M) and the lower surface of the frame forms a mesh (mesh) to allow the passage of rainwater, the lower edge of the filter medium filling frame 200 Legs 200b are provided for coupling and stacking height adjustment between the media filling frame 200, and the coupling groove 200c into which the leg 200b is inserted is provided at the upper edge of the media filling frame 200. Accordingly, when the multi-stage stacked type filter 2 is replaced, the filter medium 200 stacked in multiple stages can be easily separated and exchanged for the medium M.

As described above, the present invention improves the purification performance and service life by efficiently purifying non-point pollutants contained in rainwater through a multi-stage treatment in a vertical direction in a larger area, while multi-stage treatment in a vertical direction is separated. By allowing the stacked filter medium (M) to be made possible, the management of installation and replacement of the filter can be made extremely easy, and the present invention is in a state in which the management of the rainwater treatment device is not normally performed. Even if rainwater flows in, the reverse flow of rainwater can be prevented.

On the other hand, the present invention is not limited to the above-described embodiments, and variations and modifications may be made in various forms without departing from the scope of the technical spirit of the present invention.

For example, FIG. 9 is a block diagram showing a system configuration according to another embodiment of the stormwater purification apparatus of the present invention, and FIG. 10 is a side cross-sectional view of the stormwater purification facility having the configuration of FIG. It is disclosed to prevent the soluble non-point contaminants contained in the rainwater to pass through the blocked multi-stage stacked filter (2) even in the process of sending the rainwater flow back to the hole tube side. At this time, the reverse flow prevention hole is not installed to penetrate the entire layer of the multi-stage stacked type filter (2), it is installed to penetrate at least one layer, and is installed to pass through the multi-stage stacked type filter (2) located below the lower portion of the reverse flow prevention tube.

On the other hand, in the above-described embodiment of the present invention illustrates a case in which the multi-stage stacked filter 2 is composed of three layers, the multi-stage stacked filter 2 of the present invention may be composed of two or more stages. Of course.

Accordingly, the rights of the present invention are not limited to the embodiments described above, but are defined by what is stated in the claims, and those skilled in the art can make various modifications and adaptations within the scope of the claims. It is self evident.

The present invention concentrates and cleans the initial rainwater with high pollution in the rain in the rain through a multi-stage filter along the direction of gravity, so that the size of the purification device can be compact compared to the performance.

In addition, the present invention is advantageous in many aspects, such as maintenance and replacement by minimizing the damage to the excellent purification function to the purification device.

That is, the present invention is easy to maintain and effectively clean the rainwater including the initial rainwater through the multi-stage treatment, and effectively clean the non-point pollutants introduced with rainwater to prevent water pollution of public waters such as rivers, lakes and groundwater In addition, it provides a very useful and effective stormwater treatment device that can protect the natural ecosystem through the industrial availability.

H: Housing 1: Screen
2: Multi-stage stacked type filter 200: media filling frame
200a: net 200b: leg
200c: coupling groove 3: perforated pipe
4: Collecting well for treatment water discharge 5: Perforation pipe for preventing backflow
6: Multi-directional backwash filter 7: Holding
8: Excellent inflow pipe 9: Outflow pipe
10: manhole 11: nonwoven fabric layer
12: zeolite layer 13: gravel
M: Media

Claims (10)

A rainwater purifying apparatus provided between the rainwater inlet pipe 8 and the treated water discharge pipe 9;
A screen (1) provided to filter out contaminants contained in the rainwater immediately after passing through the rainwater inlet pipe (8);
In the process of passing the rainwater passing through the screen (1) in the direction of gravity, while passing through the filter medium (M) of several stages to filter the soluble non-point pollutants contained in the rainwater in a flat matrix type in the installation space below the screen A multi-stage stacked filter (2) installed,
The nonwoven fabric layer 11 and the zeolite layer 12 provided on the multi-stage stacked filter (2),
Perforated pipe (3) is installed to be spaced apart below the multi-stage stacked filter (2),
A collecting well 4 for discharged treated water connected to the hole 3;
A backflow prevention hole (5) having a hole (500) formed on the surface of the pipe is installed through the multi-stage stacked filter so that the upper portion protrudes from the upper surface of the multistage stacked filter (2) to allow the inflow of backflow rainwater into the hole (3). )and,
A support (7) installed to support the filter assembly below the multistage stacked filter (2) and to ensure an excellent inflow space between the multistage stacked filter (2) and the perforated pipe (3);
The backflow prevention hole (5) is installed to wrap around the upper end and comprises a multi-directional backwash filter (6) is filled with the filter medium (M) therein,
The multi-stage stacked type filter (2) is made by assembling a plurality of blocked filter medium 200,
The blocked media filling frame 200 is a hexahedron, the filter medium (M) is filled in the frame and the lower surface of the frame forms a mesh structure to allow passage of rainwater,
The lower edge of the media filling frame 200 is provided with a leg 200b for adjusting the coupling height and stack height between the media filling frame 200,
The upper edge of the filter medium filling frame 200 is provided with a coupling groove (200c) is inserted into the leg (200b),
The multi-directional backwash filter 5 is formed to form a mesh structure, the upper side is provided with a lid of the mesh structure to be opened and closed for the exchange of media,
Rainwater treatment is characterized in that the upper end of the backflow prevention hole (5) is installed so as to protrude above the upper surface of the multi-stage stacked filter (2), so that the filter medium (M) enters into the backflow prevention hole (5) to prevent clogging. Device. delete delete The method of claim 1,
Rainwater processing device characterized in that the different filter medium (M) is filled for each stacking height in the interior of the filter medium (200) constituting the multi-stage stacked filter (2). The method of claim 4, wherein
As the media (M),
Zeolite, a highly adsorptive material with excellent ion exchange ability to filter out floating nonpoint pollutants and soluble nonpoint pollutants contained in rainwater,
Activated carbon which is a porous, highly adsorptive material that filters suspended nonpoint pollutants and soluble nonpoint pollutants contained in rainwater;
Rainwater treatment device characterized in that polypropylene media is applied. delete delete delete delete A rainwater purifying apparatus provided between the rainwater inlet pipe 8 and the treated water discharge pipe 9;
A screen (1) provided to filter out contaminants contained in the rainwater immediately after passing through the rainwater inlet pipe (8);
In the process of passing the rainwater passing through the screen (1) in the direction of gravity, while passing through the filter medium (M) of several stages to filter the soluble non-point pollutants contained in the rainwater in a planar matrix type in the installation space below the screen A multi-stage stacked filter (2) installed,
The nonwoven fabric layer 11 and the zeolite layer 12 provided on the multi-stage stacked filter (2),
Perforated pipe (3) is installed to be spaced apart below the multi-stage stacked filter (2),
A collecting well 4 for discharged treated water connected to the hole 3;
A backflow prevention hole (5) having a hole (500) formed on the surface of the pipe is installed through the multi-stage stacked filter so that the upper portion protrudes from the upper surface of the multistage stacked filter (2) to allow the inflow of backflow rainwater into the hole (3). )and,
A support (7) installed to support the filter assembly below the multistage stacked filter (2) and to ensure an excellent inflow space between the multistage stacked filter (2) and the perforated pipe (3);
The backflow prevention hole (5) is installed to wrap around the upper end and comprises a multi-directional backwash filter (6) is filled with the filter medium (M) therein,
The multi-stage stacked type filter (2) is made by assembling a plurality of blocked filter medium 200,
The blocked media filling frame 200 is a hexahedron, the filter medium (M) is filled in the frame and the lower surface of the frame forms a mesh structure to allow passage of rainwater,
The lower edge of the media filling frame 200 is provided with a leg 200b for adjusting the coupling height and stack height between the media filling frame 200,
The upper edge of the filter medium filling frame 200 is provided with a coupling groove (200c) is inserted into the leg (200b),
The multi-directional backwash filter 5 is formed to form a mesh structure, the upper side is provided with a lid of the mesh structure to be opened and closed for the exchange of media,
The upper end of the backflow prevention hole (5) installed to protrude above the upper surface of the multi-stage stacked filter (2), the mesh (M) to block the inflow of the media in order to prevent the filter medium (M) enters into the backflow prevention hole (5) ) Storm water treatment device characterized in that the structure.

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