KR100905693B1 - Treatment apparatus for first flush rainwater - Google Patents

Abstract

An apparatus for treating initial rainwater is provided to process heavy metals, nutritive salts, and inert matters included in the initial rainwater effluent efficiently, and to control closing of filter paper. An apparatus(20) for treating initial rainwater includes an opening, a screen part(21,41), a settling tank(40), and a filtering tank(50). The screen part is arranged in an inflow route of the initial rain water, or the opening and the inflow route. The filtering tank is installed at the settling tank, and advanced water of the settling tank is flowed to the filtering tank. The filtering tank includes a filtering unit(51), an electrolysis unit, and inner wall(59). The filtering unit includes a medial ball. The electrolysis unit is installed at the medial ball. The inner wall fixing the filtering unit is separated from an upper and a lower surfaces of the filtering tank. An exhaust path(26) is installed between an upper side of the filtering tank and the filtering unit. An exhaust valve(24) is formed between a lower side of the filtering tank and the filtering unit.

Description

Initial Storm Water Treatment Unit {TREATMENT APPARATUS FOR FIRST FLUSH RAINWATER}

The present invention relates to an initial excellent water treatment apparatus suitable for an industrial zone to purify non-point pollutants contained in a considerable amount of the road surface of the industrial zone in rainy weather and discharge them to public waters such as rivers, rivers and lakes.

Generally, pollutants can be classified into point pollutants and nonpoint pollutants.

The former point pollutants are living sewage, livestock waste, and industrial wastewater discharged from a defined and limited point source. The latter nonpoint pollutants are roads, agricultural land, grasslands, construction sites, mines, waste disposal sites, landfills, urban areas. Areas of discharge, such as industrial sites and industrial sites, are pollutants emitted to a wide range of nonpoint sources.

In particular, among the non-point pollutants described above, the pollutants emitted from the roads of industrial areas are composed of various types of heavy metals, organic compounds, oils, greases, toxic substances, and other contaminants or suspended solids. Sweeping flows into the public waters such as rivers, rivers, bays, lakes, etc. without filtration into groundwater and acts as a major contaminant of water quality, thereby destroying ecosystems and ultimately damaging humans.

In the case of non-point pollutants spilled from the road surface of these industrial areas, heavy metals, organic compounds, oils, greases, toxic substances, and other contaminants or suspended solids come in with rainwater. Purification and processing are difficult.

Therefore, the non-point pollutant spilled from the road surface of the industrial area flows down with a large amount of heavy metals and contaminants, especially during the initial rain, the measures for the initial excellent rain on the road surface of the industrial area is important. have.

In addition, Utility Model No. 417012 and the like disclose an initial rainwater treatment device for filtration using a filter, such a filtration treatment device is that when the contaminant is filtered through the filter, contaminants remain in the filter, such contaminants As a result, the filter is easily clogged or loses its function as a filter. Therefore, there is a problem that the filter must be frequently replaced for the desired level of processing.

The present invention is to solve the above-mentioned problems of the pollutant treatment device discharged from the existing industrial road surface when the initial excellent runoff, its main purpose is heavy metals, nutrients and other It is an object of the present invention to provide an initial excellent treatment apparatus suitable for an industrial area capable of treating contaminants.

It is also an object of the present invention to provide a media ball or packaged media box for the efficient treatment of heavy metals, nutrients and other contaminants contained therein for the treatment of initial industrial runoff.

It is also an object of the present invention to provide an apparatus for controlling the blockage of filter paper by applying electrolysis to media balls and packaged media boxes that are used for the treatment of the initial runoff from industrial areas.

It is also an object of the present invention to provide an apparatus for sludge removal, filter paper occlusion control and secondary pollution prevention as the reactor is emptied.

In order to solve the above objects, the present invention provides an opening in which the initial rainwater flows in, a screen disposed in an inflow passage of the initial rainwater flowing into the opening, a precipitation pond for precipitation of the initial rainwater introduced through the screen, and the precipitation pond. An initial rainwater treatment device including a filter paper into which the supernatant of the sedimentation water flows, the filter paper including a filtration device including an electrolysis device and a media ball, and an inner wall fixing the filtration device; A discharge passage is formed between the upper surface of the filter paper to exclude rainwater that exceeds the capacity of the processing device during rainfall, and a discharge valve is formed between the filter device and the lower surface of the filter paper, and the discharge valve is closed during the rainfall. A certain amount of initial rainwater passes through the filtration device and is discharged to the discharge passage. The rainwater that exceeds the capacity of the water treatment device provides an initial stormwater treatment device characterized in that it is discharged to the upper discharge passage without passing through the filter paper.

In addition, the initial rainwater treatment device may be provided with an air diffuser device on the lower surface of the filter paper corresponding to the filter device. In the case where an diffuser is formed, the filtration in the filtration device can be facilitated due to the gas supplied through the diffuser.

In addition, the media ball in the initial rainwater treatment device may be formed by filling the metal mesh with an adsorbent, the metal mesh is a stainless steel mesh, the adsorbent may include one or two or more of zeolite, activated carbon, pearlite, illite. Can be. When the media ball is made of a metal mesh, current flows through the metal mesh, so that the electrolysis in the filtration apparatus can be facilitated. In particular, when the metal mesh is a stainless steel mesh, since no rust is formed, it is preferable in that there is no loss of the metal material during electrolysis and no increase in resistance due to rust occurs.

In addition, the initial rainwater treatment device may be that the filtering device may include a packaged media box, the media ball may be filled in the packaged media box. In the case of the packaged media box as described above, it is sufficient to replace the media box when the filter device is replaced at the end of the life of the filter device, so that management of the initial rainwater treatment device can be facilitated.

Here, the packaged media box may be made of stainless steel, and the packaged media box may be stacked in multiple stages. If the packaged media box is made of stainless steel, it is advantageous at the time of electrolysis for the same reason that the media ball is formed of a stainless steel mesh.

In addition, the device preferably electrolyzes the inside of the media ball through the electrolysis device at the end of the rainfall, and then opens the discharge valve to remove rainwater remaining in the filter paper. Electrolysis of the media ball of the filtration device after the rainfall is over will decompose the contaminants inside the media ball, and in the case of discharging it by opening the discharge valve at the bottom of the filter paper, contaminants inside the media ball can be effectively removed. By removing contaminants inside the media bowl, the life of the filter can be extended.

As described above, according to the initial excellent treatment device suitable for the industrial area according to the present invention, by purifying the initial excellent water, including heavy metals, nutrients, organic substances and other contaminants flowing out from the road surface of the industrial area, only purified water in the river By discharging, it is possible to prevent pollution of public waters such as rivers, lakes and groundwater by nonpoint pollutants, and consequently to preserve natural ecosystems.

In addition, it improves the removal efficiency of heavy metals and nutrients that were not removed from the existing non-point reducing device, and extends the life of the filtering device, improves the workability of replacing the filtering device, and reduces the cost of managing the excellent treatment device by packaging and blocking the filter. There is an effect such as.

Hereinafter, each component will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the initial stormwater treatment device 20 includes a contaminant reservoir 30, a clarifier 40, a filter paper 50, and includes a contaminant reservoir 30 and a clarifier 40, and a clarifier 40. And filter paper 50 are adjacent to each other and communicate with each other.

As shown in FIGS. 1 and 2, the screen portion in the initial stormwater processing apparatus includes a coarse screen 21 and a first detail screen 41, and additionally includes a second detail screen 42 as necessary. You may. The coarse screen 21 is detachably coupled to the opening of the initial rainwater treatment device. A first detail screen 41 is positioned below the coarse screen 21, and the first detail screen 41 is formed to be inclined toward the contaminant storage tank 30.

A settling basin 40 is positioned below the first detail screen 41, and a settling ramp slope 44 is formed between the settling basin 40 and the first detail screen. One side of the settling basin 40 is formed lower than the other side, the settling basin inclined plate is formed to be inclined in the direction of the lower settling basin 40.

A discharge passage 23 is formed in the lower one of the settling basins 40, and a discharge valve 22 is formed in the discharge passage 23.

A partition wall 45 is formed in the settling basin 40 to separate the communication space 47 between the space below the first fine screen 41 and the settling basin 40 and the filter paper 50. The second detail screen 42 is formed in the communication portion 47 between the settling basin 40 and the filter paper 50.

The sedimentation basin 40 and the filter paper 50 are connected through a communication path, and the communication path 47 is a partition wall separating the partition 45 of the sedimentation basin 40 and the sedimentation basin 40 and the filter paper 50 ( 46). The separating wall 46 of the settling basin 40 is formed to a predetermined height, the settling basin 40 may store a certain amount of rainwater, but if more than that flows in the wall of the separating wall 46 of the settling basin 40 The rainwater flows to the filter paper 50.

The filter paper 50 includes an inner wall 59 extending in the vertical direction at a position spaced apart from the lower surface and the upper surface of the filter paper, and has an initial rainwater from the settling paper 40 between the dividing wall 46 and the inner wall 59. An introduction passage 58 to be introduced is formed. The inner wall extends to a position higher than the position where the discharge passage 26 is formed, but is spaced apart from the upper surface of the filter paper.

As shown in FIG. 1, the filter paper 50 is divided into a filtration device 51, an diffuser including an diffuser 54 and an diffuser 53, a discharge valve 24, and discharge passages 25 and 26. Consists of. The filtering device 51 is fixed to the inner wall of the central portion of the filter paper 50 and the filter paper wall opposite to the separating wall.

On the filter paper wall in the lower part of the filtration device 51, an diffuser device including an diffuser 54 and an diffuser passage 53 is formed. Further, a discharge passage 25 is formed between the filter device 51 and the diffuser in the filter paper wall 57, and a discharge valve 24 is formed inside the discharge passage 25. A discharge passage 26 is formed in the filter paper wall 57 between the filter device 51 and the upper surface of the filter paper 50.

1 and 3 together, the filtration device 51 is configured by stacking a plurality of packaged media boxes 57. The inside of the packaged media box 57 is filled with a media ball 56, and the inside of this media ball 56 is filled with an absorbent material. In the embodiment, the packaged media boxes 57 are stacked in three stages, and a media box 57 including media balls with larger particles toward the bottom thereof is disposed.

Further, in the embodiment, the filtering device 51 includes a stainless steel electrode 52 between the packaged media box 57, and is connected to the stainless steel electrode 52 and the stainless steel electrode 52, and the filtering device. An electrolysis device is formed, including a power supply device 55 located outside of 51.

Meanwhile, as shown in FIG. 3, the media ball 56 is filled with an adsorbent between two separable meshes in a mesh form. In the embodiment, the mesh is formed of a stainless steel mesh, but is a conductive and insoluble material. If rust does not form, it does not matter to other materials.

In addition, the adsorbent filled in the media ball 56 is selected from materials capable of adsorbing contaminants such as zeolite, activated carbon, elite, and pearlite, and may be combined with two or more, and the contaminants to be removed (heavy metal, Depending on nutrients, organic substances, etc.), different kinds of adsorbents may be replaced or used together.

Hereinafter, the operation of the initial stormwater treatment apparatus of the present embodiment will be described based on the flow of stormwater.

As shown in FIG. 4, the coarse matter and rainwater collected from the road surface are separated through the coarse screen 21, and the rainwater flows into the settling basin 40.

The first detail screen 41 is a finer screen than the coarse screen 21 and is inclined to the contaminant storage tank 30, so that the fines that pass through the coarse screen 21 at the rainwater passing through the coarse screen 21 are not removed. It is filtered and sent to the contaminant reservoir 30 where rainwater passes through and flows into the settling basin 40. In the middle of the settling basin 40 and the first fine screen 41, the settling ramp ramp 44 precipitates fine fine contaminants that have passed through the first small screen 41.

Rainwater is sludge precipitated in the sedimentation basin 40, the supernatant of the sedimentation basin 40 after the fine sediment is precipitated rises the communication path 47, and in this case separates the uncollected contaminants, The supernatant of the sedimentation basin 40 which passed through the detail screen 42 flows into the filter paper 50.

The rainwater introduced into the filter paper 50 beyond the dividing wall 46 in the sedimentation basin 40 falls to the lower surface of the filter paper 50 and fills up from the lower surface in the filter paper 50. In this process, rainwater passes through the media ball 56 of the filtration device 51 located inside the filter paper, and contaminants such as heavy metals mixed in the rainwater are adsorbed by the adsorption material inside the media ball 56. Will be. In this process, the acid generator supplies air to facilitate the adsorption reaction.

The raised rainwater is discharged into the discharge passage 26 after passing through the filtration device 51. The other discharge passages 22 and 24 have closed discharge valves 22 and 24 while the rainwater is being introduced, so that the rainwater can only be streamed or appealed through the discharge passage 26 while the rainwater is introduced into the initial stormwater treatment device. To public waters.

However, if the initial rainwater outflow amount is excessive, the space between the inner wall 59 of the filter paper and the upper surface of the filter paper may be discharged directly to the discharge passage 26 without passing through the filter device 51.

The flow of stormwater is shown in FIG.

6 is an operation flowchart of the processing apparatus at the end of the rainfall. After the rainfall is finished, as shown in FIG. 6, the pollutants of the influent sewage may be applied by applying power from the stainless steel electrode 52 and the DC power supply 55 installed in the filtration device 51 in the filter paper 50. Electrolysis may be performed by applying a constant time, a constant voltage, and a constant current according to the degree to decompose contaminants adsorbed on the adsorbent in the media ball 56 to control the blockage of the media ball 56. .

After the electrolysis is completed, the discharge valves 22 and 24 installed at the lower part of the sedimentation basin 40 and the filter paper 50 are opened to rapidly discharge the rainwater filled in the initial rainwater treatment device 20, thereby backwashing the filtration device 51. And emptying the reaction tank 20 to induce sludge 43 removal in the lower part of the sedimentation basin 40 to remove contaminants in the reaction tank 20 which become secondary pollution, thereby inducing an increase in the efficiency of removing contaminants in subsequent rainfall.

While the present invention has been described and illustrated with reference to preferred embodiments for illustrating the principles of the invention, the invention is not limited to such embodiments, and appropriate variations and modifications may be included within the scope of the invention. Should be considered.

1 is a longitudinal sectional view showing the internal structure of an initial excellent treatment apparatus suitable for an industrial area to which the present invention is applied;

2 is a partial cutaway perspective view of the present invention,

3 is a coarse screen and the first detail screen of the present invention,

4 is a filtration device diagram consisting of a media ball and a packaged media box of the present invention;

5 is a flow chart of the processing device during rainfall,

6 is a flowchart of the operation of the processing apparatus at the end of the rainfall.

Explanation of symbols for the main parts of the drawings

20: initial rainwater treatment device

21: large screen

22: discharge valve

23: discharge passage

24: discharge valve

25: discharge passage

26: discharge passage

30: contaminant storage tank

31: Miscellaneous

32: 1st detail screen

33: Miscellaneous Drawing Line

40: sedimentation basin

41: first detail screen

42: second detail screen

43: sedimentation sludge

44: settling plate

45: bulkhead

46: dividing wall

50 filter paper

51: filtration device

52: electrode

53: diffuser

54: acid machine

55: DC power supply

56: Media Ball

57: packaged media box

59: inner wall

Claims (7)

1. Openings in which the initial rainwater flows in,

   Screen portions 21, 41 disposed in the openings, the inlet passages of the initial rainwater entering through the openings, or both;

   Sedimentation basin 40 for the precipitation of the initial rainwater introduced through the screen portion 21, 41, and

   As the initial storm water treatment apparatus 20 including the filter paper 50 in which the supernatant of the sedimentation basin 40 flows over the dividing wall 46 adjacent to the sedimentation basin 40,

   The filter paper 50 fixes the filter device 51 including the media ball 56, the electrolysis devices 52 and 55 installed in the media ball 56, the filter device 51, and fixes the filter paper 50. And an inner wall 59 formed spaced apart from the upper and lower surfaces of the

   A discharge passage 26 is formed between the filter device 51 and the upper surface of the filter paper 50, and a discharge valve 24 is formed between the filter device 51 and the lower surface of the filter paper 50. And

   And the discharge valve 24 is closed during rainfall so that a predetermined amount of the initial rainwater passes through the filtration device 51 and is discharged to the discharge passage 26.
2. The method of claim 1,

   Initial rainwater treatment device characterized in that the air purifiers 53 and 54 are formed on the lower surface of the filter paper 50 corresponding to the filtering device 51.
3. The method according to claim 1 or 2,

   And the media ball (56) is formed by filling a metal mesh with an adsorbent.
4. The method according to claim 1 or 2,

   The filtering device 51 comprises a packaged media box 57, wherein the media ball 56 is filled in the packaged media box 57.
5. The method of claim 3, wherein

   The metal mesh is a stainless steel mesh, and the adsorbent comprises at least one of zeolite, activated carbon, pearlite, and illite.
6. The method of claim 4, wherein

   The packaged media box (57) is made of stainless steel, the packaged media box is an initial storm water processing apparatus, characterized in that stacked in multiple stages.
7. An initial stormwater device comprising an opening, a settling basin 40 and a filter paper 50, the filter paper 50 comprising a media ball 56 and a filtration device 51 comprising an electrolysis device for electrolyzing the media ball and An inner wall for fixing the filtration device 51, and a discharge passage 26 is formed between the filtration device 51 and the upper surface of the filter paper 50, and the filtration device 51 and the filter paper ( As a management method of the initial rainwater treatment apparatus in which the discharge valve 24 is formed between the lower surfaces of 50),

   At the end of the rain, the interior of the filtration device 51 is electrolyzed through the electrolysis device,

   And then opening the discharge valve (24) to remove rainwater remaining in the filter paper (50).

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