KR101705299B1 - Filtation apparatus using back washing type float media - Google Patents

Abstract

The present invention relates to a floating-medium filtration apparatus capable of air backwashing. According to the present invention, the volume of the filtration apparatus can be reduced by the use of the floating medium. The floating medium filtration apparatus according to the present invention comprises: a treatment tank which has an inlet line formed at one side and an outlet line formed at the other side; a filtration chamber which is disposed in the treatment tank so as to communicate with the discharge line, which includes upper and lower meshes formed such that a space is formed below the discharge line, and which has a floating-medium layer disposed between the upper and lower meshes; a washing unit which comprises an air compressor and an air supply line, one end of which is connected to the air compressor, and the other end of which is exposed to a portion above the discharge portion in the filtration chamber; and an opening/closing unit which is provided in the discharge line, and which closes the discharge line by compressed air discharged from the air supply line and opens the discharge line when the compressed air is not discharged.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a filtration apparatus,

The present invention is advantageous from the viewpoint of economy in terms of construction because it can reduce the volume of the entire apparatus by using floating filter media, and also makes it possible to perform cleaning work easily and efficiently. In addition, And more particularly, to a filtration apparatus for doubling the cleaning efficiency by simultaneously or sequentially cleaning the floating filter media.

The non-point pollution source, which is one of the causes of the destruction of ecosystem caused by the rapid development of the industrial society, has a purification effect of more than 90% due to the present technology. However, due to the urban expansion of roads and industrial complexes, the alternative due to the increase of unexpected non- Concerns about water pollution still exist.

Especially, in case of rainfall, pollutants scattered in urban, industrial complex, roadside etc. are temporarily introduced with early storm and temporarily flow into rivers and lakes, resulting in destruction of ecosystem due to high pollution load and depletion of dissolved oxygen. As a pollution source, it became a factor to increase water pollution load.

As an example of the filtration treatment apparatus for the initial stormwater treatment, Korean Patent No. 10-894022, entitled "Non-point Pollutant Disposal Apparatus" is presented. The present invention relates to a variable- And an inlet pipe formed at one side thereof; A solids separator formed on the upper surface of the solid separator and having a screen formed on an outer surface thereof, the initial rainwater flowing in through the inlet pipe to separate the effluent and the solids from each other, a hollow shape surrounding the solids separator, A first treatment unit including an oil water separator for separating oil components and a sedimentation tank formed below the solids separator and storing the solid matter; A first filtration hole is formed to allow the effluent treated in the first treatment unit to flow, a filtration sedimentation tank in which contaminants contained in the effluent are precipitated, and a fine filtration wall for purifying fine contaminants and the effluent A second processing unit; A cartridge porous filter formed with a third inflow hole through which the effluent processed in the second processing unit flows and having a plurality of refilling holes formed on an outer periphery thereof for finally purifying the effluent; A third processing unit including an inlet and outlet member having a plurality of inlet and outlet holes and a filter support member connected to the fixing unit and the fixing unit to which the cartridge porous filter and the inlet and outlet members are fixed.

However, in the above-described technology, the inflow water is finally filtered through the microfiltration wall and the cartridge porous filter to discharge the treated water. When the filter is closed through the filtration process, a separate cleaning means is introduced to clean the filter There is a hassle to do.

Korean Patent Registration No. 10-894022

The present invention has been conceived to solve the above-mentioned problems, and it is an object of the present invention to provide a filtration apparatus which is capable of reducing the volume of the apparatus by using a floating oil filter medium during filtration, .

In order to solve the above-mentioned problems, the floating filter filtration device (hereinafter referred to as " filtration filter ") of the present invention capable of backwashing air is provided with an inflow line on one side and a discharge line on the other side; A filtration chamber configured to communicate with the discharge line in the treatment tank, wherein upper and lower meshes are formed so as to form a space below the discharge line, and a floating filter medium layer is interposed between the upper and lower meshes; A cleaning means including an air compressor and an air supply line, one end of which is connected to the air compressor and the other end is exposed above the discharge line inside the filtration chamber; And opening and closing means for opening the discharge line when the discharge line is closed by the compressed air discharged by the air supply line and the discharge of the compressed air is released, constituting the discharge line.

In one example, the filtration chamber is formed with a discharge chamber which protrudes while forming a space therein from the upper side to the lower side and has a plurality of flow holes formed on the lower surface thereof.

As one example, the bottom surface of the discharge chamber is formed as a curved surface.

As one example, a plurality of desorbing rods are formed in the lower part between the upper and lower meshes on the side of the filtration chamber.

As one example, the opening / closing means may include an opening / closing plate hinged to the upper end of the discharge line, a first weight attached to the lower end of the opening / closing plate, a connecting rod projecting from the upper end of the opening / closing plate, When the cleaning means is not in operation, the open / close plate maintains the state in which the discharge line is opened, and the state in which the open / close plate closes the discharge line is maintained by the pressurization of the compressed air when the cleaning means is in operation .

For example, the treatment tank is provided with a drain pump and a stagnant water discharge unit having one end connected to the drain pump and the other end exposed to the outside of the treatment tank.

As described above, the filtration apparatus of the present invention has advantages in that it can reduce the volume of the entire apparatus due to the use of floating filter media, thereby being advantageous in terms of economy of construction. So that the cleaning operation is facilitated and efficient.

In addition, the filtration apparatus of the present invention has the advantage of doubling the cleaning efficiency by simultaneously or sequentially performing blowing of the floating filter material by the compressed air during the cleaning operation and washing of the floating filter material by the stored rainwater.

1 is a schematic view showing a basic example of the present invention,
2A to 2I are operational state diagrams of the present invention,
3A to 3C are operational state diagrams of an embodiment of the present invention,
FIG. 4 is a schematic view showing another embodiment of the discharge chamber shown in FIG. 3A and the like,
5 is a schematic view showing another embodiment of a treatment tank which is an embodiment of the present invention.

Hereinafter, the structure and operation of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, terms and words used in the present specification and claims are to be construed in accordance with the principles of the present invention, on the basis that the inventor can properly define the concept of a term in order to best explain his invention It should be construed as meaning and concept consistent with the technical idea of.

As shown in FIG. 1, the filtration treatment apparatus of the present invention includes a treatment tank 2 having an inlet line 21 at one side and a discharge line 22 at the other side; The upper and lower meshes 31 and 32 are formed in the treatment tank 2 so as to communicate with the discharge line 22 and a space is formed under the discharge line 22, , A filtration chamber (3) in which a floating filter medium layer (33) is embedded; (4) including an air compressor (41), an air supply line (42) connected at one end to the air compressor (41) and the other end exposed above the discharge line (22) inside the filtration chamber ); The discharge line 22 is closed by the compressed air discharged by the air supply line 42 and the discharge line 22 is opened when the discharge of compressed air is released, And means (5).

1, an inflow line 21 is formed on one side of the treatment tank 3 so that the initial unevenness or the like, which is not shown in the figure, is introduced into the treatment tank 3, The discharge line (22) allows the introduced initial rain or the like to flow through the filtration chamber (3) and discharge the treated water to the outside.

1, the stagnant water discharging means 6 is further provided with a discharge pump 61 and a discharge pump 61 on the lower surface of the treatment tank 3, And a stagnant water discharge line 62 whose one end is connected to the pump 61 and the other end is exposed to the outside of the treatment tank 2. When stagnant water is generated in the treatment tank 3, No action has been taken, but measures are to be taken.

The filtration chamber 3 is configured to form a closed space within the treatment tank 2 as shown in FIG. 1 and configured to communicate with the discharge line 22 at one side. The upper and lower meshes 31 and 32 are formed in the filtration chamber 3 so as to form a space below the discharge line 22 and a floating filter medium layer 33 is formed between the upper and lower meshes 31 and 32, .

The initial rain or the like that has flowed into the treatment tank 2 flows into the filtration chamber 3 through the lower mesh 32. As the level of the initial rain or the like introduced into the filtration chamber 3 increases, The initial rain or the like which has been floated up to the upper mesh 31 and flowed into the filtration chamber 3 passes through the floating filter medium layer 33 during this process and the boiling point contained in the initial rainwater is filtered, Line 22 to the outside.

The floating filter medium layer 33 is formed of a plurality of floating filter media. The material of the floating filter medium layer 33 is not limited. For example, expanded polypropylene may be used.

The cleaning means 4 includes an air supply line 42 having one end connected to the air compressor 41 and the air compressor 41 and the other end exposed to the upper portion of the discharge line 22 in the filtration chamber 3, The compressed air is discharged from the upper portion of the discharge line 22 into the filtration chamber 3 through the air supply line 42 by the operation of the air compressor 41. [

The discharged compressed air pushes the water level of the filtration chamber 3 downward and strikes the floating filter medium layer 33. The foreign matter deposited on the floating filter medium layer 33 is removed from the floating filter medium by the blow, And is discharged to the treatment tank 2 through the lower mesh 32.

That is, the cleaning means 4 hits the floating filter medium layer 33 by the pressurization by the compressed air and simultaneously lowers the water level of the filtration chamber 3 to collide with the floating filter media, to collide with the lower mesh 32 of the floating filter media, The foreign matter deposited on the floating filter medium is removed by cleaning the floating filter medium due to the lowering of the water level of the filtration chamber 3, and the separated foreign matter is discharged through the stagnant water discharging means 6 to the outside. As described above, the present invention improves the cleaning efficiency of the floating filter medium layer 33 by removing the foreign matter by the collision of the floating filter medium or the like and cleaning the separated foreign matter.

In the present invention, as shown in FIG. 5, an embodiment for increasing the removal efficiency of foreign matter from the floating filter medium during the cleaning operation is suggested. In this embodiment, a plurality of desorption rods 34 are formed between the upper and lower meshes 31 and 32 on the side surface of the filtration chamber 3. Preferably, the plurality of desorption rods 34 are formed on the side of the filtration chamber 3 between the upper and lower meshes 31 and 32, and are formed at the lower portion. In other words, during filtration, the floating filter medium layer 33 remains in contact with the upper mesh 31 at the upper portion of the desorption rod 34, and at the time of cleaning operation, the floating filter medium layer 33 is floated The downward flow is generated at the same time as the collision between the filter media, and the collision occurs in the desorption rod (34) during the downward flow of the floating filter media, thereby doubling the desorption efficiency of the foreign material from the floating filter media.

The desorption rods 34 may protrude from the side of the filtration chamber 3 and may be connected to one side of the filtration chamber 3 as shown in FIG.

Meanwhile, in order to increase the cleaning efficiency of the cleaning means 4, it is necessary to control the leakage of the compressed air. To this end, the discharge line 22 is required to be closed when the cleaning means 4 is operated. According to the present invention, the discharge line 22 is provided with the opening / closing means 5, and the opening / closing means 5 is connected to the discharge line 22 by the compressed air discharged by the air supply line 42, And when the discharge of the compressed air is released, the discharge line 22 is opened.

As shown in FIG. 1, the opening / closing means 5 includes an opening / closing plate 51 having an upper end hingedly coupled to the discharge line 22, A connecting weight 53 protruding from an upper end of the opening and closing plate 51 and a second weight weight 54 at an end of the connecting rod 53. [

The opening and closing means 5 is configured such that the opening and closing plate 51 maintains the opened state of the discharge line 22 when the cleaning means 4 does not operate, The open / close plate 51 keeps the discharge line 22 in a closed state by the pressurization of the compressed air.

That is, the opening / closing means 5 of the present invention maintains the discharge line 22 in an open state without a separate power source, and automatically opens the discharge line 22 So as to prevent the leakage of the compressed air, thereby improving the cleaning efficiency. For this operation, when the weight of the opening and closing plate 51 and the first weight 52 is less than the weight of the connecting rod 53 and the second weight 54, as shown in FIG. 1, The opening and closing plate 51 should be balanced so that the discharge line 22 is opened from the outside of the discharge line 22 and the opening and closing plate 51, (51) closes the discharge line (22) when the compressed air is pressurized and the discharge line (22) is opened again when the axle air is released .

An operation example of the filtration treatment apparatus 1 of the present invention constructed as above will be described with reference to Figs. 2A to 2I.

2A shows a state of unclean air, and no inflow of rainwater into the inflow line 21 is present.

2B shows a state in which an initial storm is introduced into the treatment tank 2 through the inflow line 21 in a rainy season. The initial storm flows into the treatment tank 2 and the initial storm that has flowed into the treatment tank 2 flows into the filtration chamber 3 through the lower mesh 32 as the water level in the treatment tank 2 becomes higher, Shows the state in which the filter medium layer 33 is floated.

As shown in FIG. 2C, rainwater continuously flows into the treatment tank 2 at the time of a rainfall, and the floating filter medium layer 33 reaches the upper mesh 31 as the level of the rainwater flowing into the filtration chamber 3 increases. And the treated water having passed through the floating filter medium layer 33 is discharged to the outside through the discharge line 22. As shown in Fig.

Next, Fig. 2D shows a state in which the treated water is discharged through the discharge line 22 in the state in which the rainfall is finished, and the entire water level is located at the lower part of the inflow line 21 and the lower part .

Next, as shown in FIG. 2E, compressed air is injected into the filtration chamber 3 by the operation of the cleaning means 4, and the opening / closing means 5 is discharged As the level of the filtration chamber 3 is lowered by the pressurization of the compressed air, the floating filter medium layer 33 also flows downward to the lower mesh 32 will be.

In this process, foreign matter is removed from the floating filter media due to the collision between the floating filter media, and the water level of the filtration chamber 3 is lowered, and the foreign matter having the water level passing through the floating filter medium layer 33 is washed downward. The cleaned foreign matter is discharged to the treatment tank 2 through the lower mesh 32. In this process, as shown in FIG. 2F, water is completely discharged from the filtration chamber 3 into the treatment tank 2 by the pressurization of the compressed air, and the compressed air strikes the floating filter medium layer 33, It will be removed.

FIG. 2G shows a state in which the cleaning process is finished. When the operation of the cleaning means 4 is released, the water discharged into the treatment tank 2 flows into the filtration chamber 3 again in the cleaning process, It will be restored. The processes of FIGS. 2E to 2G may be repeatedly performed, thereby doubling the cleaning efficiency.

2H and 2I are diagrams for explaining the operation of the stagnant water discharging means 6 when the stagnant water is generated in the treatment tank 2 in the state where the above-mentioned cleaning process is completed, Thereby discharging the foreign matter or the like which has been removed in the cleaning process to the outside. When this process is completed, as shown in FIG.

In the present invention, as shown in FIGS. 3A to 3C, an embodiment for doubling the cleaning efficiency is proposed. In this embodiment, an example is shown in which a discharge chamber 7 is formed in the filtration chamber 3 so as to protrude therefrom with a space formed therein from the top to the bottom and a plurality of flow holes 71 formed on the bottom surface thereof I am suggesting.

That is, as shown in the drawing, the discharge chamber 7 is formed to have a space in the upper surface of the filtration chamber 3 and protrude downward while a plurality of flow holes 71 are formed in the lower surface thereof, The rainwater flowing into the discharge chamber 3 flows into the discharge chamber 7 through the flow hole 71 as the water level in the filtration chamber 3 becomes higher. When the cleaning means 4 is operated, And the rainwater stored in the chamber 7 is discharged downward through the flow holes 71, so that the floating filter medium layer 33 is further cleaned.

3A, when the rainwater flowing into the filtration chamber 3 during the rainfall increases in the filtration chamber 3, the flow of the rainwater in the filtration chamber 3 is increased, The water level h2 of the discharge chamber 7 and the water level h1 of the filtration chamber are made equal to each other.

Next, as the cleaning means 4 is operated, compressed air is injected into the filtration chamber 3 so that the water level h1 of the filtration chamber 3 is lowered as shown in FIG. 3B, The cleaning process for the filter medium layer 33 is performed.

3C, the water level h1 of the filtration chamber 3 is lowered preferentially by the operation of the cleaning means 4, and the rainwater in the filtration chamber 3 is completely discharged to the treatment tank 2 The rainwater stored in the discharge chamber 7 is discharged to the floating filter medium layer 33 through the flow hole 72 by a free fall (the rainwater can be discharged in a downward direction before that) The floating filter medium layer 33 in which the foreign substance has been previously removed by blowing due to the discharge of the rainwater in the chamber 7 is once again subjected to the washing process to double the efficiency of separation of the foreign matter from the floating filter medium layer 33 .

This process is performed until the water level h2 of the discharge chamber 7 is lowered and the rainwater is completely discharged from the discharge chamber 7. [

As a result, the discharge chamber 7 is further provided in the filtration chamber 3 so that the blow by the compressed air and the cleaning by the rainwater in the filtration chamber 3 are performed, So that the washing efficiency can be doubled.

4, the discharge chamber 7 of the present embodiment is configured so that the bottom surface 72 forming the curved surface is formed, and the discharge chamber 7, which is stored in the discharge chamber 7 The rainwater can be discharged to the wide area by the floating filter medium layer 33 so as to improve the cleaning efficiency of the floating filter medium layer 33 accordingly.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

1: Invention 2: Treatment tank
3: Filtration chamber 4: Cleaning means
5: opening / closing means 6:

Claims (5)

A treatment tank in which an inflow line is formed on one side and a discharge line is formed on the other side;
Wherein a plurality of floatage media are disposed between the upper mesh and the lower mesh, and the upper mesh and the lower mesh are disposed in the space below the discharge line in a space communicating with the discharge line, And a plurality of desorbing rods located under the floating filter medium layer are contained so that the initial stormwater flows into the inside through the lower mesh, and as the level of the introduced initial stormwater rises, the floating filter medium layer A filtration chamber that is floated up to the mesh, passes through the floating filter medium layer and filters the boiling point included in the initial rainwater, and causes the treated water to flow out through the discharge line;
An air compressor for externally supplying compressed air, and an air compressor connected at one end to the air compressor, the other end being exposed at an upper portion of a discharge line inside the filtration chamber, so that compressed air supplied from the air compressor is discharged through the filtration And an air supply line for discharging the discharged compressed air to the inside of the chamber. As the discharged compressed air pushes down the water level of the filtration chamber and hits the floating filter medium layer, A cleaning means for striking the lower mesh to remove foreign matter deposited on the floating filter medium layer from the floating filter medium and discharging the separated foreign material to the treatment bath through the lower mesh; And
A first weight attached to the lower end of the open / close plate, a second protrusion protruding from the upper end of the open / close plate, and a second weight at the end of the connection plate, Closing means for maintaining the state in which the opening and closing plate is opened and for maintaining the state in which the opening and closing plate closes the discharge line by the pressurization of the compressed air when the washing means is in operation Wherein the air filtering unit is provided with an air filter.
The method according to claim 1,
Wherein the filtration chamber is formed with a discharge chamber which protrudes while forming a space therein from an upper portion to a lower portion and has a plurality of flow holes formed on a lower surface thereof.
3. The method of claim 2,
And the lower surface of the discharge chamber is formed as a curved surface.
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