KR100923234B1 - Non-point source contaminant purification system and method thereof for an early stage rain water by multi-stage treatment - Google Patents

Abstract

PURPOSE: An initial rainwater purification device through multi-step process and a purification method thereof are provided to offer easy maintenance and management by comprising components easily. CONSTITUTION: An initial rainwater purification device through multi-step process is installed between a rainwater inflow pipe(13) and an outlet pipe(14). The initial rainwater purification device further includes a settling tank(1), a detail screen(2), a first filter media screen(3), a second filter media screen(4), and a plurality of filters(5). The settling tank precipitates nonpoint pollutants included in the initial rainwater. The detail screen filters floating non-point pollutants included in the initial rainwater. The first filter media screen filters the soluble non-point pollutants and the floating non-point pollutants. The second filter media screen filters the pollutants secondly.

Description

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

The present invention relates to the treatment of non-point pollutants, and more particularly, to improve the purification efficiency for non-point pollutants included in the initial rainwater through the multi-stage treatment, and to cartridgeize the elements constituting the filtration apparatus. It relates to an initial stormwater purification device and an initial stormwater purification method to facilitate maintenance.

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 the 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., but some of the pollutants are purified. Not only is the discharge area wide, but also remains mostly on the surface of the earth, and it becomes the main cause of water pollution by entering the public water or groundwater such as rivers with the initial rainwater.

In addition, the non-point contaminant has a specific gravity higher than that of the rainwater compared to the specific gravity of the rainwater and sedimentary nonpoint pollutant and the specific gravity is lower than the rainwater, so that it 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 pollutants are 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 are usually washed in 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, considering the runoff characteristics during rainfall, an economical and effective method for purifying nonpoint pollutants 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.

In addition, an economical and effective method for separating and purifying the initial rainwater with high pollution in the early stage of rainfall is a method by filtration which requires less site and has a high purification effect.

The key to the early rainwater purifier is the filter, in the existing purifier is due to the excessive load of the filtration performance of the filter is a short life of the filter is a situation that the maintenance frequency of the filter is too high.

In other words, in the filter, particulate contaminants are filtered through the pores of the media. In the conventional purifier, too much contaminants are filtered in the filter, and particulates accumulate in the pores so quickly that the pores are blocked, thereby reducing the permeability of the media. This shortens the service life of the filter.

Therefore, in the filter, instead of purifying the water quality by reducing the pore size of the filter surface, it is necessary to disperse the filtration function for the contaminants used by the filter through the filter screen to allow the filter to be used elsewhere to prolong the use time of the filter. have.

On the other hand, in the case of the filter applied to the conventional early rainwater purification apparatus, the unit weight is too heavy and the size is too large, the replacement work is difficult and dangerous has a problem that is accompanied by a lot of difficulties in maintenance.

In addition, the conventional initial rainwater purification device has a problem that the purification efficiency for the initial rainwater is low because the structure is passed through the filter after the simple filtration by the screen.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and efficiently purifies non-point pollutants contained in the initial rainwater through a multi-stage process to improve the purification performance and the life of the filter, while also purifying the purification device. It is an object of the present invention to provide an initial rainwater purification device and a method for purifying the same, in which cartridges are constituted to facilitate maintenance.

In other words, the present invention is to provide a large filtration area at a small area by installing a separation facility of the initial rainwater with high pollution in order to purify non-point pollutants economically and effectively in the purification of rainwater containing non-point pollutants. In order to improve the maintenance efficiency of the purification facility by collecting the initial rainwater with high pollution and filtering the whole quantity, the weight of the components responsible for the filtration in the purification device and the cartridgeization make the replacement work safe and easy. The purpose is to.

In order to achieve the above object, the present invention, in the initial rainwater purification apparatus installed between the rainwater inlet pipe and the discharge pipe; A sedimentation tank for precipitating sedimentary nonpoint pollutants contained in the initial rainwater introduced through the inlet pipe, a detail screen provided to filter out the floating nonpoint pollutants contained in the initial rainwater, and the floatability contained in the initial rainwater. A filter screen for filtering non-point contaminants and soluble non-point contaminants first, and a plurality of filters for finally filtering the floating non-point contaminants and soluble non-point contaminants included in the initial rainwater passing through the filter screen prior to discharge. Including a filter, the precipitation tank and the fine screen, the filter screen and the filter is provided in the initial rainwater purification apparatus through the multi-stage treatment, characterized in that sequentially installed along the flow of rainwater.

On the other hand, according to another aspect of the present invention for achieving the above object, in the initial rainwater purification apparatus provided between the storm rain inlet pipe and the discharge pipe; A sedimentation tank for precipitating the sedimentary nonpoint pollutants contained in the initial rainwater introduced through the inlet pipe, a detail screen for filtering the floating nonpoint pollutants contained in the initial rainwater, and the floating nonpoint pollution contained in the initial rainwater. Suspended non-point pollutant, which has a primary filter screen that primarily filters materials and soluble non-point pollutants, and has a filter medium pore relatively smaller than that of the media of the primary filter screen. And a secondary filter screen for secondaryly filtering soluble nonpoint contaminants, and a plurality of filters for finally filtering the floating nonpoint contaminants and soluble nonpoint contaminants included in the initial rainwater passing through the secondary filter screen prior to discharge. Purification apparatus of the initial rainwater through the multi-stage treatment, characterized in that the filter is installed sequentially along the flow of rainwater.

According to the method of the present invention for achieving the above object, the step of precipitating the precipitated non-point pollutant contained in the initial rainwater; Filtering the floating nonpoint pollutants included in the initial rainwater through the detail screen; Filtering the suspended nonpoint pollutant and the soluble nonpoint pollutant contained in the initial rain through a zeolite-filled filter screen, which is a highly adsorptive material having excellent ion exchange ability; Initial filtering through the multi-stage treatment, characterized in that it comprises the step of finally filtering the suspended non-point pollutant and soluble non-point pollutant included in the initial rain through a filter filled with activated carbon, which is a porous high adsorption material; A purification method is provided.

The effects of the present invention are as follows.

The present invention is easy to maintain and replace the initial rainwater through the multi-stage treatment while being replaceable, and effectively clean the non-point pollutants introduced with rainwater to prevent water pollution of public waters such as rivers, lakes and groundwater, This provides a very useful and effective initial stormwater treatment device that can protect the natural ecosystem.

In addition, the initial rainwater treatment device of the present invention is a simple and sturdy structure, and since each component constituting the purification device is manufactured in the form of a cartridge, it is possible to save manufacturing costs and easily replace the installation cost It is useful and effective because it can save the time, properly separate the initial rainfall and the continuous rainfall, and show high purification power and large capacity.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings of FIGS. 1 to 6.

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 substances. It is assumed that it can contain a wide variety of things, such as contaminants and suspended solids.

1 is a block diagram showing the system configuration of the initial storm water purification apparatus of the present invention, Figure 2 is a cross-sectional view showing a preferred embodiment of the initial storm water purification facility of the present invention, Figure 3 is a line along the line I-I of FIG. It is a cross-sectional view, and FIG. 4 is a longitudinal cross-sectional view along the II-II line | wire of FIG. And, Figure 5 is a perspective view of the filter screen applied to the present invention, Figure 6 is a perspective view of the filter applied to the present invention.

Referring to these drawings, the initial rainwater purification apparatus of the present invention, the precipitation tank (1) for precipitating the sedimentary non-point pollutant contained in the initial rainwater introduced through the rainwater inlet pipe 13, and included in the initial rainwater The fine screen (2) provided to filter out the floating non-point pollutant, the filter screen for filtering the floating non-point pollutant and soluble non-point pollutant contained in the initial rainwater, and the initial rain passed through the filter screen It comprises a plurality of filters (5) to finally filter the floating non-point contaminants and soluble non-point pollutants prior to discharge, sequential along the flow of rain between the storm rain inlet (13) and the discharge pipe (14) Is installed.

The filter screen is a primary filter screen (3) for filtering the primary non-floating contaminants and soluble non-point pollutants contained in the initial rain and relatively, the gap of the filter medium of the primary filter screen (3) It comprises a secondary filter screen (4) which is configured to have a small filter voids to secondaryly filter the floating non-point pollutant and soluble non-point pollutant passed through the primary filter screen (3).

On the other hand, the primary filter screen (3) and the secondary filter screen (4) is formed by filling the zeolite in the form of a particle with a mesh of a predetermined size mesh as a filter medium, the secondary filter screen ( The media filled in 4) is relatively smaller than the media filled in the primary screen, so that the size of the pores between the particles is also relatively small.

For reference, although the primary filter screen 3 and the secondary filter screen 4 are illustrated separately in FIG. 5 without being shown separately, in practice, the secondary filter screen 3 is secondary to the particle size of the zeolite 32 on the primary filter screen side. It is preferable that the particle size of the zeolite 42 on the filter screen side is different from each other.

On the other hand, the filter (5) is an omni-directional filter in which filtering is performed while the rainwater flows out after the rainwater flows in through the side and the upper direction, and the mesh that the rainwater can flow into the side and the upper surface in a cylindrical shape is An outcase 51 formed on the bottom surface and provided with a rainwater outlet, particulate activated carbon 52 filled in the outer case 51 as a filter medium, and effluent water provided on a lower surface of the outer case 51. It comprises a guide pipe 53.

In addition, the lower part of the filter 5 is provided with a collecting channel 8 where the rainwater filtered while passing through the activated carbon 52 therein is discharged to the discharge pipe 14.

On the other hand, the small screen (2), the primary filter screen (3) and the secondary filter screen (4), and the filter (5) is located at a relatively high position compared to the settling tank (1), but sequential along the flow of rain The fine screen (2), the primary filter screen (3) and the secondary filter screen (4) is installed on the screen holder (6).

The plurality of filters 5 are provided on a mount plate 7 provided separately from the screen holder 6 to form a water collecting passage 8, and each of the filters 5 on the mount plate 7. ) Is provided with a filter fixing hole (7a) is inserted into the effluent guide pipe (53).

And, the settling tank (1) and the fine screen (2), the primary filter screen (3) and the secondary filter screen (4), a plurality of filters (5) is installed inside the box-shaped structure having a manhole cover (9) do.

On the other hand, the separation manhole 10 is connected to the initial rainwater purification device is a box-shaped structure, the collecting pipe 11 for introducing the rainwater into the manhole is connected to one side, to see the rainwater flowing through the collecting pipe 11 The inlet pipe 13 which is sent to the invention purification device is connected to the other side, and the overflow pipe 12 which flows over the rainwater flowing into the manhole without sending it to the purification device has a relatively low head compared to the collection pipe 11. It is connected to another side to have.

Initial rainwater purification in the initial rainwater purification facility of the present invention configured as described above is as follows.

When it rains, the sedimentary / floating non-point contaminants adhered to the ground with initial rainwater move along the ground to enter the separating manhole 10 through the collecting pipe 11, and then enter the separating manhole 10. Rainwater is introduced into the purification apparatus of the present invention along the inlet pipe (13).

Precipitable nonpoint pollutants in the nonpoint pollutants included in the initial rainwater flowing into the purification apparatus of the present invention are settled and separated from the settling tank 1 by their own weight.

At the same time, the rainwater is stored inside the purification device so that the water level rises, and the rainwater rises to the primary screen 3 through the detail screen 2, and the floating boiling point in the detail screen 2 Large volumes of contaminants are filtered out.

Meanwhile, among the nonpoint pollutants included in the rainwater introduced through the screening screen (2) into the primary screen (3), the floating nonpoint pollutants are caught in the mesh of the primary screen (3) and soluble nonpoint pollution. The material is adsorbed to the zeolite filled inside the mesh of the primary screen 3.

The zeolite is a material having high hydrophilicity and excellent ability to adsorb water molecules without damaging the crystal structure, and includes a natural zeolite naturally produced from rocks and clays and an artificial zeolite artificially made, and serves as a cation exchange resin. It is used for the removal of ammonia nitrogen and heavy metals.

On the other hand, finer floating nonpoint pollutants among the nonpoint pollutants included in the rainwater passing through the primary screen 3 are caught in the mesh of the secondary screen 4 and are not adsorbed by the zeolite of the primary screen. The remaining soluble nonpoint contaminants are adsorbed to the zeolite filled to have smaller filter voids inside the mesh of the secondary filter screen 4.

The rainwater passing through the primary filter screen 3 and the secondary filter screen 4 by the above process passes through a plurality of filters 5, and the outer case 51 made of stainless steel constituting the filter 5. Activated carbon 52 is filled therein, so that the final filtration and purification of rainwater is made.

Then, the rainwater that has undergone the filtration in the filter (5) is collected into the sump (8) through the effluent guide pipe (53), the rainwater collected in the sump (8) is the discharge pipe (14) Is discharged through.

At this time, the discharge pipe 14 may be connected to the overflow pipe (12) again.

On the other hand, the purification device of the present invention described above by cartridge (cartridge) the primary filter screen (3) and the secondary filter screen (4) and the filter (5), the replacement operation of the filtration device is made safe and easy In addition, the maintenance efficiency of the purification facility is increased.

In particular, unlike the conventional, the filter 5 of the present invention is a structure in which the activated carbon 52 is filled inside the outer case 51 having a mesh as a stainless steel material, rainwater can be introduced into the upper side as well as the side. Its size is reduced compared to the existing one, and the weight is reduced so that one worker can handle it.

In addition, the filter 5 of the present invention is factory-manufactured in the cartridge type in advance, and at the time of replacement, it is only necessary to remove the existing filter and insert a new filter.

As described above, the present invention is capable of reducing the scale of the purification device because the initial rainwater having high pollution degree is concentrated and purified in consideration of the outflow characteristics during rainfall, and thus, it is economical and occurs in large quantities with a large flow rate after the initial rainwater. The rainwater that is mixed with the soil and contaminants to be discharged directly through the overflow pipe 12, so that the function of the initial rainwater purification device can be maintained normally, the maintenance is easy.

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

For example, the mesh of the secondary filter screen 4 may have a denser mesh than the mesh of the primary filter screen 3, and the filter screen is not limited to the primary and the secondary but may be installed at more times. Even if only one filter screen is installed in the first and second stages, it is possible to increase the life span of the filter by distributing the load applied to the filter 5 while improving the use of the filter while improving the excellent purification effect. to be.

That is, the rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and various changes and modifications can be made by those skilled in the art within the scope of the claims. It is self evident.

The present invention is economical because it is possible to reduce the scale of the purification device because the first rainwater with high pollution is separated and intensively purified in consideration of the runoff characteristic during rainfall.

In addition, the present invention allows only the initial rainwater flows into the purification device, the rainwater mixed with large amounts of soil and sediments generated with a large flow rate after the initial rainwater flows directly through the overflow pipe without entering the purification device to function as a purification device. Is maintained normally, so maintenance is easy.

In particular, the present invention is easy to maintain and replace the initial rainwater through the multi-stage treatment while being replaced, 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 initial rainwater treatment device that can protect the natural ecosystem through the industrial availability.

1 is a block diagram showing the system configuration of the initial storm water purification facility of the present invention

Figure 2 is a cross-sectional view showing the configuration of an embodiment of the initial storm water purification facility of the present invention

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

4 is a longitudinal sectional view taken along the line II-II of FIG.

5 is a perspective view of a media screen applied to the present invention

6 is a perspective view of a filter applied to the present invention

Explanation of symbols on the main parts of the drawings

1: settling tank 2: washing screen

3: primary screen 4: secondary screen

5: filter 6: screen holder

7: Mount Plate 7a: Filter Fixing Hole

8: catch channel 9: manhole cover

10: Separate Manhole 11: Tea House

12: overflow pipe 13: inlet pipe

14: discharge pipe 31, 41: netting

32, 42: Zeolite 51: Outcase

52: activated carbon 53: runoff guide

Claims (10)

What is claimed is: 1. An initial stormwater purification device installed between a stormwater inlet pipe and a discharge pipe; A sedimentation tank which precipitates sedimentary nonpoint pollutants contained in the initial rainwater introduced through the inlet pipe, A fine screen provided to filter out floating non-point pollutants contained in the initial rainwater; A primary filter screen for filtering the floating nonpoint pollutant and the soluble nonpoint pollutant contained in the initial rainwater firstly; A secondary filter screen for secondaryly filtering the floating nonpoint pollutant and the soluble nonpoint pollutant that have passed through the primary filter screen; Initial rainwater purification device through the multi-stage treatment, characterized in that it comprises a plurality of filters to finally filter the floating non-point pollutant and soluble non-point pollutant contained in the initial rain passed through the secondary filter screen before discharge . The method of claim 1, The primary filter screen and the secondary filter screen, the initial rainwater purification apparatus through a multi-stage treatment, characterized in that the particulate zeolite is filled as a filter medium in each of the mesh having a predetermined size of the mesh. The method of claim 2, The air gap of the filter medium of the secondary filter screen is an initial rainwater purification apparatus through the multi-stage treatment, characterized in that configured to have a filter medium pores relatively smaller than the gap of the filter medium of the primary filter screen. The method of claim 1, The filter is an omnidirectional filter in which filtering is performed while the rainwater flows out through the rainwater through the side and the upward direction. Through the multi-stage treatment, the mesh is formed in a cylindrical shape so that rainwater can be introduced into the side and the upper surface, and the outer case is provided with a rainwater outlet on the bottom, and granular activated carbon filled in the outer case. Early Rainwater Purifier. The method according to any one of claims 1 to 4, The first rainwater purification apparatus through the multi-stage treatment, characterized in that the water collecting channel is collected on the lower side of the filter before the rainwater passing through the filter is discharged to the discharge pipe. The method of claim 5, wherein The fine screen, the primary filter screen and the secondary filter screen, and the filter is located in a relatively high position compared to the settling tank, but are sequentially installed along the flow of rain, The fine screen, the primary screen and the secondary screen is installed on the screen mounting target, And said plurality of filters are installed on a mount plate forming said collection channel. The method of claim 6, Filter mounting holes are provided on the mount plate for fixing each filter, The outcase of the filter is further provided with an outflow guide tube extending downward to communicate with the rainwater outlet formed on the bottom surface, the outflow guide tube is characterized in that the initial insertion characterized in that it is inserted into the filter fixing hole formed on the mount plate Excellent purification device. What is claimed is: 1. An initial stormwater purification device installed between a stormwater inlet pipe and a discharge pipe; A sedimentation tank which precipitates sedimentary nonpoint pollutants contained in the initial rainwater introduced through the inlet pipe, A fine screen provided to filter out floating non-point pollutants contained in the initial rainwater; A filter screen for filtering the floating nonpoint pollutant and the soluble nonpoint pollutant contained in the initial rainwater firstly; It comprises a plurality of filters to finally filter out the floating non-point pollutant and soluble non-point pollutant contained in the initial rain that passed through the filter screen, the sedimentation tank and the fine screen, the filter screen and the filter is excellent Initial rainwater purification device through a multi-stage treatment, characterized in that sequentially installed along the flow. Precipitating the precipitated non-point pollutant contained in the initial rainwater; Filtering the floating nonpoint pollutants included in the initial rainwater through the detail screen; Filtering the suspended nonpoint pollutant and the soluble nonpoint pollutant contained in the initial rain through a zeolite-filled filter screen, which is a highly adsorbent material having excellent ion exchange ability; Initial filtering through the multi-stage treatment, characterized in that the step of filtering the final non-floating pollutant and soluble non-point pollutant contained in the initial rain through a filter filled with activated carbon, which is a porous high adsorption material; Purification method. The method of claim 9, The step of filtering the floating nonpoint contaminants and soluble nonpoint contaminants included in the initial rainwater by passing through the zeolite-filled filter screen may be performed at various times by varying the size of the mesh or the size of the pores of the media. Purification method of the initial rain through the multi-stage treatment characterized in that.

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