KR101291606B1 - Reducing apparatus for nonpoint source pollutants of early rainwater on the road containing whirlpool chamber - Google Patents

Abstract

PURPOSE: A device for reducing the non-point pollutant of road initial rainwater is provided to operate based on the head drop of natural pressures without a power source and to effectively remove pollutants from rainwater by reducing the flux of the rainwater using a flux reducing chamber based on vortex. CONSTITUTION: A device for reducing the non-point pollutant of road initial rainwater comprises an impurity filtering unit (20) and a precision filtering system. The impurity filtering unit comprises a rainwater inlet, a cylindrical partition wall, a vortex chamber (22), a fixing unit (23), and a supporting board. The vortex chamber is arranged in the cylindrical partition wall. A spiral screw with a rotary shaft is installed on the center of the vortex chamber in order to reduce the flux of inflow rainwater by rotation. The precision filtering system comprises a precision filtering chamber, an outlet, a partition wall between the precision filtering chamber and the outlet, and a finishing cover. Rainwater without impurities flows into the precision filtering chamber.

Description

Reducing Apparatus For Nonpoint Source Pollutants Of Early Rainwater On The Road Containing Whirlpool Chamber}

The present invention relates to a device for reducing non-point pollutants of the initial road surface excellent rainwater having a vortex chamber, and more particularly, the initial rainwater flowing into the drainage port during rainfall in the pavement by using the vortex chamber The present invention relates to a non-point pollutant reduction device for effectively removing contaminants by preventing the flow rate from increasing.

Generally, sources of water pollution can be classified into point sources and nonpoint sources. Point sources are continuously generated at certain points such as domestic sewage and factory wastewater, whereas nonpoint sources are unspecified places such as roads, farmland, mountainous areas, and construction sites. Precipitation is difficult due to natural rainfall and anthropogenic events.

In particular, non-point pollution sources such as roads accumulate environmental pollutants such as heavy metals, oils, and organic matters on road surfaces due to exhaust gas, tire wear, engine oil leakage, etc. when cars or trucks are parked or driven. In case of rain, the water flows into the rivers or rivers through the manhole gratings or catch basins in the sideways, and worsens the water quality of the rivers and lakes.

Therefore, the government and local governments have enacted a non-point source management system to protect water resources and secure the health of aquatic ecosystems, and recently strengthened the standards for environmentally friendly road maintenance and standards for water quality and aquatic ecosystem conservation. In addition, facilities and workplaces that are likely to release nonpoint pollutants are required to report the installation of nonpoint source and mandatory installation of nonpoint pollution prevention facilities.

Accordingly, various non-point pollutant treatment devices have been developed and used.

In Korean Patent No. 10-0911819, the first precipitation tank in which rainwater containing non-point pollutant is introduced through the inlet, the composite filtration tank in which rainwater passed through the first precipitation tank is filtered, and the stormwater treated in the composite filtration tank A second settling tank introduced; And an outlet through which the rainwater passed through the second precipitation tank is discharged, and the composite filtration tank comprises: a first filtration layer through which suspended solids contained in the rainwater are filtered, and a fine flotation material of the rainwater passing through the first filtration layer. Between the second filtration layer, the third filtration layer through which the heavy metals of the rainwater passed through the second filtration layer are filtered, and the fourth filtration layer and the first through fourth filtration layers through which the organic matter of the rainwater passing through the third filtration layer is filtered. A device for reducing non-point pollutants including a barrier wall disposed to cross each other to form a zigzag filtration path is disclosed. However, since the first filter layer is premature because it does not remove a large amount of contaminants such as fallen leaves contained in the initial rainwater. There is a structural problem that the blockage is difficult and the exchange of the filter layer is difficult.

In Korean Patent No. 10-0905693, the opening of the initial rainwater, the screen portion disposed in the inlet passage of the initial rainwater flowing into the opening, the sedimentation basin for the precipitation of the initial rainwater introduced through the screen and adjacent to the sedimentation basin The first rainwater treatment device comprising a filter paper into which the supernatant of the sedimentation water is introduced, wherein the filter paper comprises a filter device including a media ball, an electrolysis device installed on the media ball, and a top and bottom surfaces of the filter paper. And an inner wall spaced apart from each other, and an excellent discharge passage is formed between the filter device and the upper surface of the filter paper to exceed the initial excellent water treatment device capacity during rainfall, and a discharge valve is disposed between the filter device and the lower surface of the filter paper. A discharge passage including a is formed, the inner wall is the upper surface of the filter paper It extends higher than the discharge passage thereof, and discloses an initial rainwater treatment device in which the discharge valve is closed in case of a rain so that a certain amount of the initial rainwater passes through the filtration device and is discharged to the discharge passageway. It is imperative that applications on roads that require no-power systems do not seem practical. In addition, there is a problem that can not remove road contaminants such as heavy metals, oil, organic substances in rainwater.

In addition, the conventional non-point pollutant removal device has a problem that it is difficult to remove the contaminants such as suspended substances and other substances when the flow rate is increased in proportion to the quantity of rainwater initially introduced.

Korean Patent Publication No. 10-0911819 Korean Registered Patent Publication No. 10-0905693 Korean Patent Registration Publication No. 10-0570957 United States Patent Publication: US 6,531,059 B1 Korea Patent Publication No. 10-0823236 (2008.04.18) Korea Patent Publication No. 10-0750495 (2007.08.21)

 Reduction of Road Runoff Contaminants, Surya Pandey etc., 2005, Land Transport New Zealand Research Report 282  Criteria for Installation of Road Pollutant Reduction Facilities, 2010.06, Busan Regional Construction and Management Administration  Urban Non-point Pollution Management Technology, 2009.08, Environmental Management Corporation

The present invention is to solve and complement the problems caused by the conventional non-point pollutant reduction device as described above, can remove the contaminants in the rainwater flowing into the manhole grating during the rain, the rainwater flowing in using the vortex chamber The purpose of the present invention is to reduce the load of the microfiltration system by increasing the flow rate even though the flow rate is increased, and to provide a non-pollutant reduction device for the natural gravity type road surface initial rainwater that does not need a separate power source using its own drop.

Another object of the present invention is to provide a fine filtration device capable of removing fine suspended solids (SS), oil, organic components and heavy metals in rainwater from which contaminants have been removed by passing through the contaminant filtration device.

In order to achieve the above object, the present invention provides a device for reducing non-point pollutants by buried in the lower part of the manhole grating or water collecting well in which the rainwater is collected and introduced during rainfall, , A dust cover device including a circular cover that is easy to clean and open, a vortex chamber for preventing a flow rate even if the flow rate of rainwater flowing from the inlet increases, and the suspended particles and organic components contained in the rainwater. Reduction of non-point pollutants in the initial excellent road surface including a vortex chamber comprising a precision filtration system having a plurality of filtration layers to remove the step by passing through a plurality of filtration layers and the cover to replace the filtration layer Provide the device.

According to the present invention, the apparatus for reducing the non-point pollutants of the excellent initial road surface having the vortex chamber according to the present invention can effectively remove the pollutant contained in rainwater because the flow rate is reduced through the flow rate reducing chamber using the vortex. In addition, since it operates by ensuring a drop in natural pressure, power is unnecessary and a cover that can be opened on the upper part of the filtration apparatus can be easily cleaned and exchange of media.

In addition, by removing the contaminants and soil in the rainwater from the contaminant filtration device, the filtration load of the microfiltration system is reduced, and the filter life is extended, and the heavy metals, oil, and organic substances in the rainwater can be removed by passing through a plurality of functional filtration layers. It can be effective.

1 is a perspective view of a non-point pollutant reduction device of the initial excellent road surface according to an embodiment of the present invention.
Figure 2 is an exploded perspective view of the non-point pollutant reduction device of the initial excellent road surface according to an embodiment of the present invention.
Figure 3 is an internal front perspective view of the non-point pollutant reduction device of the initial excellent road surface in accordance with an embodiment of the present invention.
Figure 4 is a side perspective view of the inside of the non-point pollutant reduction device of the initial excellent road surface in accordance with an embodiment of the present invention.
5 is an internal front and side perspective view of the state before the vortex chamber is mounted;
Figure 6 is a side cross-sectional view of the non-point pollutant reduction device of the initial excellent road surface in accordance with an embodiment of the present invention.
7 is a schematic diagram illustrating an example of a vortex chamber according to an embodiment of the present invention.

The present invention, in one aspect,

In the rainwater early rain non-point pollutant reduction device embedded in the lower part of the manhole grating or the sump well in the rainwater collected during the rain,

The non-point pollutant reducing device includes a manhole grating (10); and an inlet (11) through which rainwater at the initial stage of the road surface is introduced from the manhole grating; A cylindrical partition wall 21 which constitutes a housing of the contaminant filtration device 20 and receives inflow water passing through the vortex chamber 22; Located in the cylindrical partition wall 21, a spiral screw having a rotating shaft in the center is installed in the center so as to reduce the flow rate by rotating the rainwater flows in communication with the inlet 11, the sediment deposition portion 22a is installed at the bottom A vortex chamber 22 including a discharge port 29 provided with a strainer at the bottom thereof; Fixing means 23 coupled to an outer circumferential surface of the vortex chamber 22; A contaminant filtration device 20 configured to support the fixing means and to include a pedestal 24 for fixing the vortex chamber; And

A fine filtration chamber 31 into which rainwater in which the contaminants are removed from the contaminant filtration device 20 is introduced; Drains through which filtered rainwater is discharged; A partition wall 34 in which upper and lower portions of the microfiltration chamber 31 and the drain port are opened to form a flow path; And a closing cover (39) for closing the opening side of the precision filtration chamber (31).

The microfiltration chamber includes a first filter layer 36 filled with a filter medium for removing residual suspended matter contained in the introduced rainwater, and a filter filled with a filter medium adsorbing organic material from the rainwater having passed through the first filter layer. The second filtration layer 37 and the third filtration layer 38 filled with a filter medium for adsorbing and removing heavy metals from rainwater having passed through the second filtration layer are sequentially disposed.

The drainage port comprises a main drain 32 which discharges the rainwater flowing over to prevent rainwater and backflow filtered through the first to third filtration layer and an auxiliary drainer 33 through which residual water is discharged. It provides a non-point pollutant reduction device of the initial excellent road surface comprising a vortex chamber characterized in that.

The present invention, in a further aspect,

The contaminant filtering device 20 includes a support part 27 formed at an upper portion of the cylindrical partition wall 21;

An auxiliary cover 26 in close contact with an inner wall of the cylindrical partition wall 21 and configured to close the opening side edge of the vortex chamber 22 while being supported by the support part 27;

A center cover 25 formed to close the center portion of the opening side of the vortex chamber 22; And

The road surface including the vortex chamber further comprises; a connector 28 formed on the opposite side of the inlet 11 so that the rainwater passing through the vortex chamber 22 flows into the microfiltration system 30. Providing rainwater nonpoint pollutant reduction device.

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described in detail, referring an accompanying drawing. The detailed drawing of the connection method performed by normal welding, screwing, etc., or the coupling method, and its description are abbreviate | omitted.

1 to 7 show a perspective view, a cutaway view, and a side view of the contaminant filtration device 20 and the precision filtration system 30 according to the present invention, as shown in the main configuration of the manhole grating 10 and And a contaminant filtration device 20 including an inlet 11, a vortex chamber 22 for preventing the flow rate from increasing even if the flow rate of rainwater flowing in the manhole grating 10 and the inlet 11 increases, and It is characterized in that it comprises a fine filtration system (30) to remove the impurities in the contaminant filtration device 20, and to remove and drain the organic components and heavy metals, oil, fine particles and the like contained in the rainwater is removed.

The contaminant filtration device 20 including the vortex chamber 22 for preventing the flow rate from increasing even if the flow rate of the rainwater flowing in is increased, has a cylindrical shape, as shown in FIGS. 2 to 7. A housing of (20), and is partitioned by a cylindrical partition wall 21 in which the inflow water passing through the vortex chamber 22 is accommodated, and communicates with the inlet port 11 in the cylindrical partition wall 21 in the inlet port 11 The vortex chamber 22 and the vortex chamber 22 in which the spiral screw (refer FIG. 7) which has a rotating shaft in the center part are installed in the center, and the sediment deposition part 22a is installed in the lower part so that the flow rate which flowed in may be reduced by rotation. Fixing means 23 is coupled to the outer circumferential surface of the support means, and includes a pedestal 24 for supporting the fixing means 23 and the vortex chamber 22 is fixed.

The vortex chamber 22 has a helical screw having a rotating shaft in the center, and the sediment deposition portion 22a is installed at the bottom thereof, so that when the flow rate of the incoming rainfall increases or the flow velocity is increased, the spiral skew of the vortex chamber is Designed to rotate at low speeds, it can reduce or disperse incoming hydraulic oil and reduce the load on the microfiltration system.

In addition, the contaminant filtration device 20 is a cylindrical partition wall 21 formed so that the receiving portion (space) is formed inside and the upper portion is open so that the vortex chamber 22, the fixing means 23, the pedestal 24 is accommodated. ), A support part 27 protruding from the upper portion of the cylindrical partition wall 21 to the receiving part side, and the cylindrical partition wall in close contact with the inner wall of the cylindrical partition wall 21 and supported by the support part 27. The auxiliary cover 26 formed to close the opening side edge of the 21, the center cover 25 formed to close the opening side center part of the cylindrical partition 21, and the rainwater which passed through the vortex chamber 22 It further comprises a connector 28 formed on the opposite side of the inlet 11 to enter the microfiltration system 30.

Therefore, the rainwater introduced through the manhole grating 10 passes through the vortex chamber 22 without being introduced into the cylindrical partition 21 through the inlet 11, and when the rainwater is strong, the spiral screw of the vortex chamber Rotates to disperse the water pressure, and contaminants such as sediment in the rainwater are deposited on the sediment deposition portion 22a located at the lower portion of the vortex chamber 22, and installed at the lower portion of the vortex chamber 22, and the outlet having a filtering network. After receiving the inside of the cylindrical partition wall 21 through 29 (see FIG. 7), it flows to the precision filtration device 30 through the connector 28 formed on the opposite side of the inlet 11.

Alternatively, the contaminant filtration device 20 may be installed horizontally with the microfiltration system 30, or may be positioned above the microfiltration system 30 to increase the filtration efficiency by using a drop of rainwater flowing into the microfiltration system 30. .

Here, the vortex chamber 22 is positioned in the middle of the cylindrical partition wall 21. In addition, during the cleaning and repairing operation, the central cover 25 provided at the upper part of the cylindrical partition wall 21 is opened to store the impurities or sediment outside. In the case of withdrawal to the outside, the rope or chain is connected to the chamber ring attached to the upper end of the vortex chamber 22 to draw with a lifting machine. In addition, it may be desirable to provide a sediment discharge opening and closing door (not shown) on the side of the sediment deposition portion 22a installed at the lower end of the vortex chamber 22 to easily discharge the sediment if necessary.

If there is no rainfall near the boundary stone on the side of the road surface, large pollutants such as fallen leaves, straws, and garbage falling or thrown out of the vehicle, and earth and sand are piled up. After heavy rainfall, these large contaminants have little inflow. If such large contaminants are not removed from the initial stormwater, the first, second and third filtration layers 36, 37 and 38 of the microfiltration system 30 installed at the rear end may be blocked to shorten the life of the filtration layer. In order to remove such large contaminants in the initial rainwater, it is preferable to clean the contaminant filtration device 20 in a rain-free place.

To this end, the sediment deposition portion 22a may be preferable to discharge the sediment by installing a sediment opening and closing door (not shown).

The microfiltration system 30 includes a microfiltration chamber 31 through which rainwater flows through the connector 28, drain holes 32 and 33 through which the filtered rainwater is discharged, the microfiltration chamber 31, and the microfiltration chamber 31. The partitions 34 and 33 are divided into partitions 34, the upper and lower portions of which are open to form a flow path, and a closing cover 39 for closing the upper opening side of the microfiltration chamber 31.

At this time, the drain holes 32 and 33 are main drain holes 32 through which the rainwater flowing over to prevent rainwater and backflow filtered through the first, second, and third filtration layers 36, 37, and 38 is discharged. It consists of an auxiliary drain port 33 through which residual water is discharged.

In addition, the microfiltration chamber 31 is an organic material from the first filter layer 36 filled with a filter medium for removing residual suspended matter contained in the rainwater flowing in, and the rainwater passing through the first filter layer 36. The second filtration layer 37 filled with the filter medium for adsorbing the filtration and the third filter layer 38 filled with the filter medium for adsorbing and removing heavy metal from rainwater having passed through the second filtration layer 37 are sequentially arranged. do.

Here, the first filtration layer 36, by filling a non-woven fibrous media in a stainless mesh box at a high density randomly, it is possible to remove fine suspended matter and the like than the contaminant filtration device (20). In addition, a porous plate 35 is installed below the first filtration layer 36, and the porous plate 35 is disposed on the vertical wall of the microfiltration chamber 31 and the locking step (not shown) of the partition 34. As a result, the first filtration layer is supported in the horizontal plane.

The second filtration layer 37 is filled with zeolite in a stainless steel mesh box to adsorb and remove oil or metal components in rainwater, and like the first filtration layer 36, the porous plate 35 is disposed below the second filtration layer 37. ) To support the second filtration layer in the horizontal plane by the vertical side wall of the precision filtration chamber 31 and the locking step (not shown) of the partition 34.

The third filtration layer 38 is filled with activated carbon in a mesh box to adsorb and remove organic components or metal ions in rainwater, and a porous plate 35 is installed under the third filtration layer 38 to provide a fine filtration chamber ( The third filtration layer is supported in the horizontal plane by the vertical side wall 31 and the locking jaw (not shown) of the partition wall 34.

In the case of replacing the first to third filtration layers, a rope or a chain is hooked to a ring attached to the finishing cover 39 provided at the upper end of the microfiltration chamber 31 and opened by a lifting machine installed on the site. The filter media filled with the mesh is taken out to take the filter layers 36, 37, 38 independently mounted to the outside and replaced with a filter layer filled with a new filter media.

The primary filtration layer 37 is filled with charcoal to suck up the dirty material to purify the water clean, but by filling the bamboo charcoal among various charcoal, it is possible to more densely fill the box of the net.

10 manhole grating 11 water inlet
20: contaminant filtering device 21: cylindrical bulkhead
22: vortex chamber 22a: sediment deposit
23: fixing means 24: pedestal
25: center cover 26: auxiliary cover
27: support 28: connector
29: outlet 30: precision filtration system
31: precision filtration chamber 32: main drain
33: auxiliary drain 34: bulkhead
35 porous plate 36 first filtration layer
37: second filtration layer 38: third filtration layer
39: closing cover

Claims (2)

In the rainwater early rain non-point pollutant reduction device embedded in the lower part of the manhole grating or the sump well in the rainwater collected during the rain,
The non-point pollutant reducing device includes a manhole grating (10); A cylindrical partition wall 21 which constitutes a housing of the contaminant filtration device 20 and receives inflow water passing through the vortex chamber 22; Located in the cylindrical partition wall 21, a spiral screw having a rotating shaft in the center is installed in the center so as to reduce the flow rate by rotating the rainwater flows in communication with the inlet 11, the sediment deposition portion 22a is installed at the bottom A vortex chamber 22 including a discharge port 29 provided with a strainer at the bottom thereof; Fixing means 23 coupled to an outer circumferential surface of the vortex chamber 22; A contaminant filtration device 20 configured to support the fixing means and to include a pedestal 24 for fixing the vortex chamber; And
A fine filtration chamber 31 into which rainwater in which the contaminants are removed from the contaminant filtration device 20 is introduced; Drains through which filtered rainwater is discharged; A partition wall 34 in which upper and lower portions of the microfiltration chamber 31 and the drain port are opened to form a flow path; And a closing cover (39) for closing the opening side of the precision filtration chamber (31).
The microfiltration chamber includes a first filter layer 36 filled with a filter medium for removing residual suspended matter contained in the introduced rainwater, and a filter filled with a filter medium adsorbing organic material from the rainwater having passed through the first filter layer. The second filtration layer 37 and the third filtration layer 38 filled with a filter medium for adsorbing and removing heavy metals from rainwater having passed through the second filtration layer are sequentially disposed.
The drainage port comprises a main drain 32 which discharges the rainwater flowing over to prevent rainwater and backflow filtered through the first to third filtration layer and an auxiliary drainer 33 through which residual water is discharged. Non-point pollutant reduction device of the initial excellent road surface comprising a vortex chamber characterized in that the. The method of claim 1,
The contaminant filtering device 20 includes a support part 27 formed at an upper portion of the cylindrical partition wall 21;
An auxiliary cover 26 in close contact with an inner wall of the cylindrical partition wall 21 and configured to close the opening side edge of the vortex chamber 22 while being supported by the support part 27;
A center cover 25 formed to close the center portion of the opening side of the vortex chamber 22; And
The road surface including the vortex chamber further comprises; a connector 28 formed on the opposite side of the inlet 11 so that the rainwater passing through the vortex chamber 22 flows into the microfiltration system 30. Excellent non-point pollutant reduction device.

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