KR200175648Y1 - Sand filter - Google Patents

Abstract

The present invention relates to a sand filter for advanced treatment, in particular, to perform fine filtration in the process of filtration through the sand filter using the centrifugal force of the treated water introduced as well as the coagulation phenomenon of the sludge collected below In the conventional sand filter using the centrifugal force of the treated water to put the configuration to prevent the sludge is loaded into the sludge separation unit, the low-speed rotary motor and the exhaust hole is installed on the upper surface, the treatment on the upper surface A filtration tank having a water inlet pipe, the upper side of which is wider and the lower side of the lower side of the filtration tank so that a filtered water discharge tube is formed at a lower portion thereof; The first and second separators having a plurality of through holes are installed in the lower side of the filtration tank. A filtration unit installed at a lower portion of the separation plate so as to form a filtration collection unit; A rotating shaft connected to the low speed rotary motor to an upper portion of the filtration unit and provided with a plurality of grinding blades formed at a lower portion thereof; The sludge separator formed by the first separation tank formed with the rotary shaft and connected to the sludge discharge pipe by a partition to the top and a second separation tank having several blower fans installed on the bottom thereof is installed to be connected to the second separation tank. Tube; It relates to an advanced sand filter for processing, characterized in that provided with an air supply installed at the bottom of the guide tube.

Description

Sand filter for advanced processing {sand filter}

The present invention relates to a sand filter for advanced treatment, in particular, to perform fine filtration in the process of filtration through the sand filter using the centrifugal force of the treated water introduced as well as the coagulation phenomenon of the sludge collected below The present invention relates to an advanced sand filter for preventing sludge and preventing sludge from being loaded in the sludge separator.

In recent years, a large amount of industrial wastewater and domestic sewage are discharged into rivers or lakes that become water supplies through rivers, causing serious environmental pollution. Therefore, the government can minimize such environmental pollution. The policy of mandatory installation of wastewater treatment facilities and the treatment water passed through the wastewater treatment facilities were to be discharged in a filtered state without departing from the standard contamination value.

Therefore, a general wastewater facility had to be installed at a site that discharges a large amount of wastewater, while a high-treatment facility had to be equipped at a treatment facility to comply with the standard pollution value.

Although there are various facilities in the above advanced processing equipment, among them, a sand filter which is relatively simple and has excellent filtration efficiency is generally used, and the applicant has also registered the 'Rapid sand filter device' described in Utility Model Registration No. 151939. The bar will be described with reference to the accompanying drawings.

Figure 4 is a longitudinal cross-sectional view showing a conventional sand filter, the exhaust hole 142 is formed on the upper surface, the raw water inlet pipe 220 is installed through the upper side, the lower portion is installed so that the water discharge pipe 240 is connected to A filtration tank 140; A sand layer 160 provided with a water purification nozzle plate 150 having a plurality of through holes 150a formed at an inner lower portion of the filtration tank 140, and being stacked on a lower side of the water collecting portion 162 and an upper surface thereof; A post 170 installed at an inner center of the filtration tank 140; A sludge separation unit 180 having a radish 184 formed therein as an outer circumferential surface of the post 170; A sludge discharge pipe 230 connected to an outer circumferential surface of the main body 182 and installed to penetrate the outside of the filtration tank 140; A floating guide 190 spirally installed on the outer circumferential surface of the post 170 so as to connect the upper portion of the sand layer 160 with the inner space of the radish 184; It consists of an air supply unit 200 is installed at the lower end of the floating guide 190.

The action of the conventional sand filtration device configured as described above rotates the treated water in the filtration tank 140 about the post 170 installed in the inner center by the inlet pressure of the treated water introduced through the raw water inlet pipe 220, Due to the centrifugal force, sludge contained in the treated water and having a predetermined weight is collected under the post 170.

The collected sludge is guided to the sludge separation unit 180 along the flotation guide 190 through the air supply unit 200, and the sands floating together with the air bubbles and the sludge in the guide process are caused by the difference in specific gravity. And the sludge is separated from the sludge and falls, and the sludge introduced into the sludge separation unit 180 is over the inner radish 184. It is discharged to the outside of the filtration tank 140 through the sludge discharge pipe 230.

Meanwhile, the filtered purified water is discharged to the purified water discharge pipe 240 through the purified water collecting part 162 through the through hole 150a of the purified water nozzle plate 150 after passing through the sand layer 160.

However, in the conventional sand filtration device as described above, since the filtration layer simply passes through the sand layer 160, there is a problem in that it is impossible to perform more precise filtration. The problem is that the contacting parts are mixed indiscriminately and have adverse effects.

In addition, since the sludge collected below has a viscosity, the sludge is mutually aggregated due to the viscosity, the flotation force is lowered, so that the sludge separation does not occur smoothly.

In addition, as the sludge floating upward through the floating guide 190 having the lower portion opened and causing interference with the treated water rotated by the centrifugal force, the sludge does not smoothly rise.

In addition, the sludge guided to the sludge separation unit 180 also has its own mass, so that the sludge separation unit 180 does not smoothly cross the radish 184 formed into the main body 182 so that it is frequently loaded. The result was a problem.

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the purpose of which is to improve the centrifugal force of the treated water introduced by improving the 'rapid sand filtration device' described in the applicant's Utility Model Registration No. 151939 Through the sand filter In the process of performing the filtration, it is possible to perform more precise filtration, as well as to prevent the agglomeration of the sludge collected below, and to prevent the sludge is loaded into the sludge separation unit.

1 is a partial cutaway perspective view showing the configuration of the present invention.

2 is a longitudinal sectional view according to FIG. 1;

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

Figure 4 is a longitudinal sectional view showing a conventional sand filter.

Explanation of symbols for the main parts of the drawings

10: filtration tank 12: low speed rotation motor

13 exhaust hole 14 treated water inlet pipe

16: filtered water discharge pipe 20: filtration unit

22: first separator 22a, 24a: through hole

23: first filtration layer 24: second separation plate

25: second filtration layer 26: filtered water collecting part

30: guide tube 32: rotation axis

32a: grinding blade 33: bulkhead

34: sludge discharge pipe 35: first separation tank

36: blower fan 38: second separation tank

39: sludge separator 40: air supply

The present invention for achieving the above object is a conventional sand filter using a centrifugal force of the input treatment water, the low-speed rotary motor and the exhaust hole is installed on the upper surface, the treated water inlet pipe on the upper side, the filtered water discharge pipe is lower A filter tank having a wide upper side and a narrow lower side to be formed; The first and second separators having a plurality of through holes are installed in the lower side of the filtration tank. A filtration unit installed at a lower portion of the separation plate so as to form a filtration collection unit; A rotating shaft connected to the low speed rotary motor to an upper portion of the filtration unit and provided with a plurality of grinding blades formed at a lower portion thereof; The sludge separator formed by the first separation tank formed with the rotary shaft and connected to the sludge discharge pipe by a partition to the top and a second separation tank having several blower fans installed on the bottom thereof is installed to be connected to the second separation tank. Tube; Characterized in that it comprises an air supply is installed to the bottom of the guide tube.

Hereinafter, described with reference to the accompanying drawings a preferred embodiment of the present invention as follows.

1 is a partial cutaway perspective view showing the configuration of the present invention, Figure 2 is a longitudinal cross-sectional view according to Figure 1, Figure 3 is a cross-sectional view taken along the line A-A of FIG.

A low speed rotary motor 12 and an exhaust hole 13 driven at a low speed are installed on the upper surface, and a treated water inflow pipe 14 is installed on the upper surface so that the treated water flowing in from the outside direction has its own rotation power. And a filtration tank 10 formed at a lower portion of the filtration water discharge pipe 16 connected to discharge the filtered filtration water to the outside, the upper side of which is wide and the lower side of the filtration tank 10 forming a body so as to have a smooth centrifugal force;

The first and second separation plates 22 and 24 having a plurality of through holes 22a and 24a are installed in the lower side of the filtration tank 10, but the anthracite coal having excellent adsorption property is provided above the first separation plate 22. A first filtration layer 23 is formed, such as ananthracite, and a second filtration layer 25 is formed between the first and second separation plates 22 and 24 by sand, and the second filtration layer 25 is formed. Filtration collection where the filtered water passing through the through holes 22a and 24a of the first and second filtration layers 23 and 25 and the first and second separation plates 22 and 24 is collected in the lower part of the separation plate 24. A filtration unit 20 installed to form a male part 26;

The sludge which is connected to the low speed rotary motor 12 to the upper part of the filtration unit 20 and rotates in the opposite direction to the rotation direction of the treated water rotated by the centrifugal force and is rotated at a lower speed than the rotational speed is collected below. A rotating shaft 32 in which a plurality of grinding blades 32a are formed to be ground;

The rotating shaft 32 is built-in and the first separation tank 35 formed so that the sludge discharge pipe 34 is connected by the partition 33 to the upper and several blower fan 36 is installed so that the sludge does not sink to the bottom A guide tube 30 formed with a sludge separation part 39 in which a second separation tank 38 is formed and connected to the second separation tank 38;

The well-known ball is installed to the hem of the guide tube 30 to inject air The pre-supply 40 is installed is shown.

In the above, the sludge separation unit 39 is not only supported by the sludge discharge pipe 34, but also preferably fixed to the inside of the filtration tank 10 by a separate extension, etc., if necessary to be more firmly supported. .

When described in more detail with reference to the accompanying drawings the working relationship of the present invention configured as described above are as follows.

First, the treated water introduced into the treated water inlet pipe 14 is rotated while having a centrifugal force in the filtration tank 10, ie, due to the rotating centrifugal force, that is, the radius of action of the centrifugal force on the surface is large and the action of the centrifugal force toward the lower portion. Due to the small radius, sludge contained in the treated water and having mass is collected in the lower part of the center of the filtration tank 10, that is, the lower part of the guide tube 30.

The sludge collected in the lower portion of the guide tube 30 is floated upward through the guide tube 30 due to the floating force of the air bubbles supplied by the air supply 40 installed at the bottom thereof, and the sludge separation unit installed upward. Guided to (39), in which the sludge collected below the center has a viscosity and is collected while being agglomerated with each other, but the agglomerated sludge is a low-speed rotary motor 12 installed on the upper surface of the filtration tank (10). It is connected by the grinding blade 32a of the rotating shaft 32 which is rotated at a lower speed than the rotational force of the treated water and in the opposite direction to the treated water is to have a smooth flotation force.

In addition, the sludge that floats through the guide tube 30 formed in the cylindrical shape does not cause interference with the treated water rotated due to the centrifugal force has a more smooth flotation force. All.

Then, the sludge floated into the sludge separation unit 39 is first introduced into the second separation tank 38 in which a plurality of blower fans 36 are installed and rotated at the bottom thereof, and the introduced sludge is the blower fan 36. After being introduced into the first separation tank 35 through the diaphragm 33 due to the lifting force due to the rotation of the), it is discharged to the outside of the filtration tank 10 through the sludge discharge pipe 34.

On the other hand, the filtered water is formed in the first filter layer 23 formed of anthracite coal, etc. while removing fine particles of impurities contained in the treated water through a through hole 22a of the first separation plate 22, the second formed by the moire, etc. After the filtrate is filtered again from the filtration layer 25, the through-hole 24a of the second separation plate 24 is collected into the filtrate collection unit 26 and then discharged through the filtrate discharge pipe 16.

As described above, the present invention forms a filtration unit in a multi-layer in the process of performing filtration through a sand filter using the centrifugal force of the treated water to be introduced, and forms the filtration layer so as to be partitioned by each separation plate, thereby providing more precise filtration. Has the effect of performing.

In addition, the flocculation phenomenon of the sludge collected to the lower center by the centrifugal force is pulverized through the grinding blade provided on the rotating shaft, thereby increasing the flotation force of the sludge, and has a condition that can raise a larger amount of sludge.

In addition, the sludge that floats through the cylindrical guide tube is subjected to centrifugal force to the outside thereof. There is also an effect that does not generate interference with the treated water rotated more smoothly floating force.

In addition, by installing a plurality of blower pans in the separation tank, the sludge that is floated through the guide tube and installed in the sludge separation unit has a condition to prevent the loading and to discharge a large amount of sludge. It can be done.

Claims (1)

In the conventional sand filter using the centrifugal force of the input treatment water, the low-speed rotary motor 12 and the exhaust hole 13 is provided on the upper surface, the treated water inlet pipe 14 on the upper side, the filtered water discharge pipe 16 on the lower side A filter tank 10 formed with a wide upper side and a narrower side so that a) is formed; The first and second separation plates 22 and 24 having a plurality of through holes 22a and 24a are installed in the lower side of the filtration tank 10, but the first filtration layer is disposed above the first separation plate 22. (23), the filtration is provided so that the second filtration layer 25 between the first and second separation plates 22 and 24, and the filtration collection section 26 is formed in the lower portion of the second separation plate 24. Section 20; A rotating shaft 32 connected to the low speed rotation motor 12 to an upper portion of the filtration unit 20 and provided with a plurality of grinding blades 32a formed at a lower portion thereof; The first separation tank 35 is formed so that the rotary shaft 32 is connected to the sludge discharge pipe 34 by the partition wall 33 and the second separation tank 38 in which several blower fans 36 are installed. A guide tube 30 formed with a sludge separation part 39 formed to be connected to the second separation tank 38; Sand filter for advanced processing, characterized in that provided with an air supply 40 is installed to the bottom of the guide tube (30).