KR102285127B1 - Dissolved Air Floatation Having Skimmer Cleaning Apparatus - Google Patents

Abstract

Disclosed is a dissolved flotation device comprising a skimmer washing device. Dissolved flotation apparatus 100 including a skimmer washing apparatus according to an embodiment of the present invention is provided with a flotation separation tank 130 and a float trough 140, and on the water surface of the treated water (1). As a dissolved flotation device 100 for collecting and removing the floating material 2, it is mounted between the flotation separation tank 130 and the float trough 140, and a plurality of blades 111 on the outer surface. A skimmer 110 having a cylindrical structure in which is formed, and transferring the suspended material 2 from the floating separation tank 130 to the float trough 140 by rotational operation; Mounted on the skimmer 110, the skimmer cleaning device 120 for removing the suspended matter (2) attached to the skimmer 110; to include a gist of the configuration.
According to the dissolved flotation device of the present invention, by providing a skimmer washing device that removes suspended substances or sludge attached to the skimmer, it is possible to prevent the suspended substances or sludge from adhering to the skimmer and solidifying, and the suspended substances or sludge to the skimmer can be prevented. By preventing the adhesion and solidification, the rotation efficiency of the skimmer and the target material removal efficiency can be improved.

Description

Dissolved Air Floatation Having Skimmer Cleaning Apparatus

The present invention relates to a dissolved flotation device for collecting and removing suspended substances floating on the surface of treated water, and more particularly, to a dissolved flotation device including a skimmer washing device.

Water treatment of sewage wastewater, etc., achieves the desired water treatment through a biological reaction process and physical treatment while sequentially passing through the inflow tank, settling tank, and aeration tank of raw water for treatment. The removal step, the decomposition and precipitation step using activated sludge, and the supernatant water filtered in the precipitation step receive oxygen from the aeration tank and go through the activation step of aerobic bacterial propagation. The top water filtered through the tertiary sedimentation tank or filtration tank is treated with chemicals and discharged into the river.

In such water treatment, the removal of suspended matter is mainly accomplished in the settling tank. For example, a predetermined amount of treated raw water is stored to maintain a low-speed flow, and the treated raw water is hung on the surface of the water surface and the bottom of the tank in a settling tank of a civil engineering structure having a certain water level. A chain flight that is installed in a caterpillar type using cheer sprockets is installed and transported at low speed by a separate driving motor, while the sediment that has settled is to one side of the bottom of the tank, and the floated matter that has risen to the surface is treated using a separate collection device.

Various devices for collecting such floating matter have been developed up to now. Representative examples thereof include a method of scooping up floating matter on the water surface using a dipper, a method of collecting using a scraper or vacuum suction rod, and a method of collecting it using a water wheel type skimmer.

1 is a schematic side view showing a dissolved flotation device according to the prior art is shown, Figure 2 is an enlarged view of part A of Figure 1 is shown.

These drawings show a dissolved flotation device of the above-mentioned collection device using a water wheel type skimmer. In the case of a dissolved flotation device that collects using a water wheel type skimmer, the skimmer absorbs suspended substances (in the form of activated sludge, sludge, etc.) There is a problem that lowers the efficiency.

Therefore, there is a demand for a floating material collection device including a configuration that can solve the above problems.

Korean Patent Publication No. 10-2001-0100631 (published on November 14, 2001)

It is an object of the present invention to provide a dissolved flotation device including a skimmer washing device capable of preventing the solidification of floating substances or sludge attached to the skimmer.

In addition, it is an object of the present invention to provide a dissolved flotation device including a skimmer washing device capable of improving the rotational efficiency and target material removal efficiency of the skimmer by preventing the solidification of suspended substances or sludge from adhering to the skimmer. will be.

Dissolved flotation apparatus according to an aspect of the present invention for achieving this object is provided with a flotation separation tank and a float trough (float trough), dissolved flotation for collecting and removing suspended substances floating on the water surface of the treated water An apparatus comprising: a skimmer mounted between the flotation tank and the float trough, the skimmer having a cylindrical structure having a plurality of blades formed on the outer surface, and transferring suspended matter from the flotation tank to the float trough by a rotational operation; It may be configured to include a; a skimmer washing device that is mounted on the skimmer and removes suspended matter attached to the skimmer.

In one embodiment of the present invention, the skimmer washing apparatus includes: a water transport pipe mounted on the blade in the longitudinal direction of the skimmer, and having a water supply pipe and a water return pipe at both ends; and a water jet port formed to be spaced apart from the water conveying pipe at regular intervals and spraying water flowing into the water conveying pipe to the blades of the skimmer.

In one embodiment of the present invention, the skimmer washing apparatus includes: a fine pipe formed in a plurality of grid structures or a mesh structure on the surface of the blade of the skimmer, and having a water supply pipe and a water return pipe at both ends; and a water outlet formed in a plurality of the micropipes and discharging water flowing into the micropipes to the blade surface of the skimmer;

In one embodiment of the present invention, the skimmer washing device may be a high frequency vibration energy generating device for supplying high frequency vibration energy to the blades of the skimmer. In this case, the skimmer washing device may be configured to further include a temperature maintaining device for maintaining the temperature of the blade of the skimmer at a preset temperature. In this case, the preset temperature may be 40 to 60 degrees Celsius.

A dissolved flotation device according to another aspect of the present invention is a dissolved flotation device having a flotation separation tank and a float trough, and for collecting and removing suspended matter floating on the water surface of treated water, the flotation A skimmer that is mounted between the separation tank and the float trough, has a cylindrical structure with a plurality of blades formed on the outer surface, and transfers suspended matter from the floating separation tank to the float trough by a rotational operation; It may be configured to include; a skimmer washing device that is mounted adjacent to the skimmer and removes suspended matter attached to the skimmer.

In one embodiment of the present invention, the skimmer cleaning apparatus includes: a jet nozzle fixing part which is rotatably mounted by a predetermined angle adjacent to the skimmer, and for mounting a fluid jet nozzle at one end; and a fluid injection nozzle that is mounted on one end of the injection nozzle fixing part and sprays the fluid on the blade of the skimmer. In this case, the fluid injected from the fluid injection nozzle may be water, a washing liquid, or compressed air.

In one embodiment of the present invention, the skimmer washing apparatus includes: a reciprocating unit adjacent to the skimmer and reciprocating in the longitudinal direction of the skimmer, and mounting a kick-off means at one end; and a kick-off means mounted on one end of the reciprocating unit and sweeping down the surface of the blade of the skimmer in one direction by the reciprocating motion of the reciprocating unit. In some cases, the stripping means may be a plate-shaped blade or a brush. In addition, the kick-off means may include a high-frequency vibration energy generating device.

As described above, according to the dissolved flotation device of the present invention, by providing a skimmer washing device for removing suspended substances or sludge adhering to the skimmer, it is possible to prevent the suspended substances or sludge from adhering to the skimmer and solidifying.

In addition, according to the dissolved flotation apparatus of the present invention, it is possible to improve the rotational efficiency and the target material removal efficiency of the skimmer by preventing the solidification of the suspended matter or sludge attached to the skimmer.

1 is a side schematic view showing a dissolved flotation device according to the prior art.
FIG. 2 is an enlarged view of part A of FIG. 1 .
Figure 3 is a schematic side view showing a part of the dissolved flotation device according to an embodiment of the present invention.
4 is a front schematic view showing the skimmer of the dissolved flotation device shown in FIG.
Figure 5 is a schematic front view showing the skimmer of the dissolved flotation device according to another embodiment of the present invention.
FIG. 6 is an enlarged view of part B of FIG. 5 .
7 is a front schematic view showing the skimmer of the dissolved flotation device according to another embodiment of the present invention.
8 is a side schematic view showing a part of a dissolved flotation device according to another embodiment of the present invention.
9 is a front schematic view showing the skimmer of the dissolved flotation device according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to conventional or dictionary meanings, but should be interpreted as meanings and concepts consistent with the technical spirit of the present invention.

Throughout this specification, when a member is said to be located “on” another member, this includes not only a case in which a member is in contact with another member but also a case in which another member exists between the two members.

Throughout this specification, when a part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated.

3 is a schematic side view showing a part of the dissolved flotation apparatus according to an embodiment of the present invention, and FIG. 4 is a front schematic view showing the skimmer of the dissolved flotation apparatus shown in FIG.

Referring to these drawings, the dissolved flotation apparatus 100 according to this embodiment is provided with a flotation separation tank 130 and a float trough 140 , and is floating on the water surface of the treated water 1 . As the dissolved flotation device 100 for collecting and removing the suspended matter 2 , it may be of a configuration including the skimmer washing device 120 .

Specifically, the skimmer 110, as shown in FIG. 3, is mounted between the floating separation tank 130 and the float trough 140, and a cylindrical shape in which a plurality of blades 111 are formed on the outer surface. structure, and the floating material 2 can be transferred from the floating separation tank 130 to the float trough 140 by a rotating operation.

In addition, the skimmer washing device 120 is mounted on the skimmer 110, it is possible to remove the suspended matter (2) attached to the skimmer (110).

More specifically, the skimmer washing apparatus 120 may be configured to include a water transfer pipe 1213 mounted on the blade 111 in the longitudinal direction of the skimmer 110 as shown in FIG. 4 . At this time, the water transport pipe 1213 may have a water supply pipe 1211 and a water return pipe 1212 at both ends, so that water can flow into the water transport pipe 1213 . In addition, a plurality of water injection holes 1214 for spraying water flowing into the water transfer pipe 1213 to the outside may be formed in the water transfer pipe 1213 . At this time, the water injection hole 1214, as shown in FIG. 4, is formed to be spaced apart from the water conveying pipe 1213 at regular intervals, and the water flowing into the water conveying pipe 1213 is transferred to the blade of the skimmer 110. It may be of a structure formed so as to be sprayed to (111).

Of course, the above embodiment can be changed by changing the mounting position of the water transfer pipe 1213 to the outside of the blade 111 and setting the water spraying direction to the inside of the blade 111 according to the intention of the designer or operator. . Accordingly, the installation position of the water transport pipe 1213 and the setting of the water injection direction can be freely changed according to the intention of the designer or operator.

Therefore, the skimmer washing apparatus 120 of the dissolved flotation apparatus 100 according to the present embodiment including such a configuration can easily remove the suspended matter attached to the blade 111 . In addition, since the blade 111 can always be kept in a moist state, it is possible to prevent in advance that suspended matter or sludge is attached to and solidified on the skimmer 110 .

5 is a schematic front view showing the skimmer of the dissolved flotation device according to another embodiment of the present invention is shown, Figure 6 is an enlarged view of part B of Figure 5 is shown.

Referring to these drawings, the skimmer washing apparatus 120 according to the present embodiment may be configured to include a micro-pipe 1223 and a water outlet 1224 .

Specifically, the micro-pipe 1223 may be mounted on the surface of the blade 111 of the skimmer 110 in a plurality of grid structures or a mesh structure, as shown in FIG. 5 . The micro-pipe 1223 has a structure having a water supply pipe 1221 and a water return pipe 1222 at both ends, and can flow water therein.

In addition, as shown in Figure 6, the micro-pipe 1223, a water outlet 1224 for discharging the water flowing into the micro-pipe 1223 to the surface of the blade 111 of the skimmer 110 may be formed. .

Therefore, the skimmer washing device 120 of the dissolved flotation device 100 according to this embodiment including such a configuration can always maintain the blade 111 in a moist state, so that suspended substances or sludge are It can be prevented in advance from adhering and solidifying.

7 is a schematic front view showing the skimmer of the dissolved flotation device according to another embodiment of the present invention.

Referring to FIG. 7 , the skimmer washing device 120 according to the present embodiment may be a high frequency vibration energy generating device 123 that supplies high frequency vibration energy to the blades 111 of the skimmer 110 .

The high frequency vibration energy generating device 123 may generate high frequency vibration energy to remove suspended matter or sludge attached to the surface of the blade 111 of the skimmer 110 .

Specifically, the high frequency vibration energy generator 123 may clean the surface of the blade 111 of the skimmer 110 by using the cavitation phenomenon. Since the cavitation phenomenon is a well-known technique widely known to those skilled in the art as a phenomenon utilized for ultrasonic cleaning, a detailed description thereof will be omitted.

In some cases, the skimmer washing device 120 according to the present embodiment may further include a temperature maintaining device for maintaining the temperature of the blade 111 of the skimmer 110 at a preset temperature.

In order to most effectively utilize the cavitation phenomenon, the temperature of the object to be cleaned should be maintained at an appropriate temperature. It is generally known that the cavitation effect is reduced when the temperature is less than 40 degrees Celsius or more than 60 degrees Celsius. Therefore, it is preferable that the above-mentioned preset temperature is 40 to 60 degrees Celsius.

In addition, the frequency of the vibration energy generated by the above-mentioned high frequency vibration energy generating device 123 is most preferably within the short frequency range of 20 kHz to 40 kHz.

In some cases, by applying a multiple frequency method for selectively generating two or more frequencies by mounting a plurality of high-frequency vibration energy generators 123, uniform for the surface of the blade 111 of the skimmer 110 A cleaning effect and a wide range of particle removal effects can be achieved. In addition, by applying a simultaneous multi-frequency method of simultaneously generating a wide band frequency by mounting a plurality of high-frequency vibration energy generators 123, the surface of the blade 111 of the skimmer 110 is uniformly applied. One cavitation effect and precise cleaning effect can be achieved. When applying the multi-frequency method, the frequency range of the vibration energy is most preferably set in the range of 40 kHz to 90 kHz. In some cases, a more uniform cleaning effect may be achieved by extending the frequency range of the vibration energy to a range of 20 kHz to 90 kHz.

Therefore, the skimmer washing apparatus 120 of the dissolved flotation apparatus 100 according to the present embodiment including such a configuration can easily remove suspended matter or sludge attached to the blade 111 .

8 is a side schematic view showing a part of the dissolved flotation device according to another embodiment of the present invention.

Referring to FIG. 8 , the skimmer washing apparatus 120 according to the present embodiment may be configured to include a spray nozzle fixing part 1242 and a fluid spray nozzle 1241 mounted adjacent to the skimmer 110 .

Specifically, as shown in FIG. 8, the injection nozzle fixing part 1242 is mounted to be rotatable by a predetermined angle adjacent to the skimmer 110, and has a structure in which the fluid injection nozzle 1241 is mounted at one end. can In addition, the fluid injection nozzle 1241 is mounted on one end of the injection nozzle fixing part 1242 , and may spray the fluid on the blade 111 of the skimmer 110 .

At this time, the fluid injected from the fluid injection nozzle 1241 may be water, a washing liquid, or compressed air, and the skimmer washing device 120 is either on the floating separation tank 130 side or the float trough 140 side. can be installed.

The skimmer cleaning device 120 may use the above-mentioned injection nozzle 1241 to remove suspended matter or sludge attached to the blade 111 of the skimmer 110 . At this time, the direction of the fluid injected from the injection nozzle 1241 can be adjusted by using the injection nozzle fixing part 1242 .

In some cases, it is possible to effectively remove suspended substances or sludge attached to the blade 111 while preventing fluid such as water from flowing into the float trough 140 by appropriately changing the position of the injection nozzle fixing part 1242 . there is.

Therefore, the skimmer washing apparatus 120 of the dissolved flotation apparatus 100 according to the present embodiment including such a configuration can easily remove the suspended matter or sludge attached to or pressed to the blade 111 .

9 is a schematic front view showing the skimmer of the dissolved flotation device according to another embodiment of the present invention.

Referring to FIG. 9 , the skimmer washing apparatus 120 according to the present embodiment may be configured to include a reciprocating unit 1252 and a kick-off means 1251 .

Specifically, the reciprocating unit 1252 may reciprocate in the longitudinal direction of the skimmer 110 adjacent to the skimmer 110, and may be equipped with a kick-off means 1251 at one end. In addition, the kick-off means 1251 is mounted on one end of the reciprocating unit 1252, and by the reciprocating motion of the reciprocating unit 1252, the surface of the blade 111 of the skimmer 110 can be wiped down in one direction. .

More specifically, the above-mentioned stripping means 1251 may serve to physically push off suspended matter or sludge attached to the surface of the blade 111 of the skimmer 110 . As one that can be appropriately adopted for the kick-off means 1251 according to the present embodiment, a plate-shaped blade or brush may be mentioned. Of course, the above-mentioned example is only one example, and may be appropriately changed and adopted according to the intention of the user or the intention of the designer.

In addition, the reciprocating unit 1252 may be mounted on the rail 1253 to reciprocate.

In some cases, the kick-off means 1251 may be coupled to the reciprocating unit 1252 by a hinge structure 1254 as shown in FIG. 9 . At this time, the removal effect can be further improved by appropriately changing the contact angle between the kick-off means 1251 and the blade 111 using the hinge structure 1254 .

In addition, the above-mentioned removing means 1251 may be configured to include a high-frequency vibration energy generating device. In this case, as mentioned above, the high-frequency vibration energy generator can more effectively remove suspended matter or sludge attached to the surface of the blade 111 of the skimmer 110 by using the cavitation phenomenon.

Furthermore, the high frequency vibration energy generating device can be more effectively operated by being adopted together with the skimmer cleaning device according to all the above-mentioned embodiments.

As described above, according to the dissolved flotation device of the present invention, by providing a skimmer washing device for removing suspended substances or sludge adhering to the skimmer, it is possible to prevent the suspended substances or sludge from adhering to the skimmer and solidifying.

In addition, according to the dissolved flotation apparatus of the present invention, it is possible to improve the rotational efficiency and the target material removal efficiency of the skimmer by preventing the solidification of the suspended matter or sludge attached to the skimmer.

In the above detailed description of the present invention, only specific embodiments thereof have been described. However, it is to be understood that the present invention is not limited to the particular form recited in the detailed description, but rather, it is to be understood to cover all modifications and equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims. should be

That is, the present invention is not limited to the specific embodiments and descriptions described above, and any person skilled in the art to which the present invention pertains without departing from the gist of the present invention claimed in the claims can implement various modifications are possible, and such modifications shall fall within the protection scope of the present invention.

1: treated water 2: suspended matter
10: dissolved flotation device according to the prior art 100: dissolved flotation device
110: skimmer 111: blade
120: skimmer washing device 1211: water supply pipe
1212: water return pipe 1213: water transfer pipe
1214: water nozzle 1221: water supply pipe
1222: water return pipe 1223: fine pipe
1224: water outlet 123: high frequency vibration energy generator
1241: fluid injection nozzle 1242: injection nozzle fixed part
1251: lifting means 1252: reciprocating unit
1253: rail 1254: hinge structure
130: floating separation tank 140: float trough (float trough)

Claims (12)

As a dissolved flotation device 100 having a flotation separation tank 130 and a float trough 140, and for collecting and removing suspended substances 2 floating on the water surface of the treated water 1,
It is mounted between the flotation tank 130 and the float trough 140 and has a cylindrical structure in which a plurality of blades 111 are formed on the outer surface, and the floating material 2 is transferred to the flotation tank by rotation. Skimmer 110 for transferring from 130 to the float trough 140; and
It is mounted on the skimmer 110, the skimmer cleaning device 120 for removing the suspended matter (2) attached to the skimmer 110; includes;
The skimmer cleaning device 120 includes:
A fine pipe 1223 formed on the surface of the blade 111 of the skimmer 110 in a plurality of grid structures or a mesh structure, and having a water supply pipe 1221 and a water return pipe 1222 at both ends; and
a water outlet 1224 formed in a plurality of the micro-pipes 1223 and discharging water flowing into the micro-pipes 1223 to the surface of the blade 111 of the skimmer 110;
Dissolved flotation device comprising a. delete delete delete delete delete As a dissolved flotation device 100 having a flotation separation tank 130 and a float trough 140, and for collecting and removing suspended substances 2 floating on the water surface of the treated water 1,
It is mounted between the flotation tank 130 and the float trough 140 and has a cylindrical structure in which a plurality of blades 111 are formed on the outer surface, and the floating material 2 is separated from the flotation tank by rotation. Skimmer 110 transferring from 130 to float trough 140; and
It is mounted adjacent to the skimmer 110, and includes a skimmer cleaning device 120 for removing suspended matter attached to the skimmer 110;
The skimmer cleaning device 120 includes:
A reciprocating movement unit 1252 adjacent to the skimmer 110 and reciprocating in the longitudinal direction of the skimmer 110, and mounting a kick-off means 1251 at one end; and
It is mounted on one end of the reciprocating part 1252, and by the reciprocating motion of the reciprocating part 1252, a skimming means 1251 for sweeping down the surface of the blade 111 of the skimmer 110 in one direction; and ,
The stripping means 1251 is a plate-shaped blade or brush, and the stripping means 1251 is a dissolved flotation device, characterized in that it comprises a high-frequency vibration energy generating device.

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