KR20200072390A - An Apparatus for Collecting a Sludge with a Structure of Inducing a Separation by Rotation - Google Patents

Abstract

The present invention relates to a sludge collection apparatus for a rotary separation induction type and, more specifically, to a sludge collection apparatus for a rotary separation induction type rotating raw water to separate and collect sludge from the raw water. According to the present invention, the sludge collection apparatus for a rotary separation induction type comprises: a center cage (11) or shaft installed in a settling basin (B); a feed well coupled to the central cage (11) or shaft to rotate and separate sludge from raw water; a dispersion unit (13) disposed in the feed well (12) to disperse the supplied raw water; a diffusion unit (14) disposed on the lower side of the feed well (12); a scraper (15) guiding the sludger dispersed by the dispersion unit to collection units (16a, 16b); a raw water supply means (17) supplying the raw water to the dispersion unit (13); a driving means (18) for operating the central cage (11) or shaft; a discharge unit (19) discharging the sludge to the outside; and a checking means (L) allowing access to the central cage (11) from the outside of the settling basin (B).

Description

An Apparatus for Collecting a Sludge with a Structure of Inducing a Separation by Rotation}

The present invention relates to a sludge collection device of a rotational separation induction method, and specifically, to a sludge collection device of a rotational separation induction method to separate and collect sludge from raw water by rotating raw water.

In the sedimentation tank installed in a sewage treatment plant or a water purification plant, sludge may be separated from raw water and purified. Agglomerated sludge is precipitated downward, and scum generated in the raw water or generated during the agglomeration process may float upward. Sludge that has been agglomerated and made in the form of a flock needs to be separated by a suitable separating means, and various sludge settling apparatuses in this regard are known in the art. Patent registration No. 10-1249777 has a venturi-type center feedwell inside the sedimentation tank, so sludge contained in raw water is mixed and coagulated by pressure generated by the flow of raw water into the center feedwell. Therefore, a sludge sedimentation apparatus is disclosed that can shorten the time before the sludge settles to the bottom surface of the sedimentation tank. Patent No. 10-1701253 discloses a rapid coagulation settling circular sludge collector. In addition, Patent Registration No. 10-1813546 discloses a sludge collector of a circular sedimentation basin that slows down the descending speed of raw water and maximizes overflow wear to significantly improve the processing efficiency of raw water and smoothly and stably discharges scum. do. It is advantageous that the sludge aggregated in the sedimentation tank is precipitated downward while the purified water can be guided outward and discharged. In addition, it is advantageous to allow the sludge having an additional small diameter to be dispersed from the floc that is precipitated inside the feedwell and directed downward. However, the prior art does not disclose a settling tank having such a structure.

The present invention is to solve the problems of the prior art has the following purposes.

Prior art 1: Patent registration No. 10-1249777 (DM Tech Co., Ltd., announced on April 02, 2013) Sludge settling device Prior Art 2: Patent Registration No. 10-1701253 (Gaontech Co., Ltd., publicized on February 2, 2017) Rapid coagulation sedimentation circular sludge collector Prior Art 3: Patent Registration No. 10-1813546 (Hyosung Enviro Co., Ltd., Announced on December 22, 2017) Sludge collector of circular sedimentation basin

An object of the present invention is to induce rotational separation to improve the treatment efficiency of the sludge by inducing the floc of flocculation to settle downward while the purified water is discharged to the outside as the raw water containing the agglomerated sludge or sludge rotates. It is to provide a sludge collection device of the method.

According to a preferred embodiment of the present invention, the rotation separation induction type sludge collection device includes a center cage or a central shaft installed in a sedimentation tank; A feed well coupled to the center cage or central axis to separate sludge from raw water while being rotated; A dispersing unit disposed inside the feed well to disperse the supplied raw water; A diffusion unit disposed below the feed well; A scraper guiding the dispersed sludge from the dispersion unit to the collection unit; Raw water supply means for supplying raw water to the dispersion unit; Drive means for operation of the center cage or central axis; A discharge conduit extending outward from the collection unit to discharge the sludge to the outside; And an inspection means to allow access to the center cage from outside of the sedimentation tank.

According to another suitable embodiment of the present invention, at least one separation slit is formed in the feed well to discharge raw water from which sludge has been removed to the outside.

According to another suitable embodiment of the present invention, at least one dispersion hole is formed for dispersing raw water on the circumferential surface of the dispersion unit.

According to another suitable embodiment of the invention, the diffusion unit is entirely conical in shape and at least one diffusion path is formed on the upper side of the diffusion unit.

The sludge collection device of the rotation separation induction method according to the present invention allows the concentration of the sludge to be improved by being agglomerated while being rotated. The sludge collection device installs a dispersing unit disposed inside the feed well so that raw water is uniformly dispersed inside the feed well and space utilization is increased. The collection device according to the present invention is applied to a sedimentation tank having various structures so that a floc having a large diameter and a sludge having a small diameter are settled in different areas, thereby increasing the sludge collection efficiency by collecting the precipitated sludge by a scraper. do.

Figure 1 shows an embodiment of a sludge collection device of the rotation separation induction method according to the present invention.
Figure 2 shows an embodiment of a dispersion unit applied to a sludge collection device according to the present invention.
Figure 3 shows an embodiment of a feed well applied to the sludge collection device according to the present invention.
4 shows an embodiment of a diffusion unit applied to a sludge collection device according to the present invention.

The present invention will be described in detail below with reference to the embodiments presented in the accompanying drawings, but the embodiments are intended for a clear understanding of the present invention and the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, and are not described repeatedly unless necessary for understanding of the invention, and well-known components are briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiment.

Figure 1 shows an embodiment of a sludge collection device of the rotation separation induction method according to the present invention.

Referring to Figure 1, the sludge collection device is installed in the sedimentation tank (B) to separate the sludge from the raw water, the center cage 11 or the central axis installed in the sedimentation tank (B); A feed well 12 that is coupled to the center cage 11 or the central axis and rotates to separate sludge from raw water; A dispersing unit (13) for dispersing the raw water that is disposed and provided inside the feed well (12); A diffusion unit 14 disposed under the feed well 12; A scraper 15 for guiding the sludge dispersed in the dispersion unit to the collection units 16a, 16b; Raw water supply means 17 for supplying raw water to the dispersing unit 13; Drive means 18 for the operation of the center cage 11 or the central axis; A discharge conduit 162 extending outward from the collection units 16a, 16b to discharge the sludge to the outside; And a check means (L) for allowing access to the center cage (11) from the outside of the sedimentation tank (B).

The sludge collection device may be installed in a sedimentation tank (B) having various uses or structures, and the sedimentation tank (B) may be a cylindrical shape or a similar shape in which a receiving space for receiving raw water is formed as a whole, but is not limited thereto. The sedimentation tank (B) may be made of a base (B1) forming a circumferential wall and a bottom surface, and a center cage (11) may be disposed in the central portion of the base (B1). The center cage 11 may have a column shape as a whole, and may extend in a direction perpendicular to the base B1. And the center cage 11 can be rotated by a drive means 18 such as a motor, for example a feed well 12 or other configuration coupled thereto can be rotated by rotation of the center cage 11. . The center cage 11 may have a function of providing a center of operation by installing a vertical direction in a central portion of the collection device. The center cage 11 may have a quadrangular column, a polygonal column, or a column shape as a whole, and may be connected to the driving means 18 and rotated. Depending on the size of the sedimentation tank (B) or the scale of the sludge collection device accordingly, the center cage 11 having such a column shape may be installed, or a central axis may be installed in place of the center cage 11. The central axis can be connected to the drive means by suitable means, and to other configurations of the sludge collection device it can also be connected to the central axis by means of a connecting member. As such, the present invention is not limited by the structure of the center cage 11 or whether a central axis is installed.

The feed well 12 may be coupled to the center cage 11 in a form surrounding the center cage 11 while being shaped like a drum as a whole. Raw water including sludge may be supplied into the feed well 12, and the feed well 12 may be rotated by rotation of the center cage 11. As the sludge or sludge is agglomerated by rotation of the feed well 12, it can be made in the form of a flock. Separation holes or separation slits may be formed in the feed well 12, and raw water from which sludge is removed may be separated along the direction indicated by the arrow through the separation slits. Along with this, the sludge or sludge aggregated in a floc form or a similar form may be guided toward the center while being discharged from the outside of the feed well 12 and precipitated downward. The feed well 12 may be rotated at various rotational speeds, for example, at a speed of 0.1 to 10 rpm, but is not limited thereto, depending on the overall structure of the sludge collection device or the structure of the feed well 12 The rotation speed can be set appropriately.

The dispersing unit 13 may be disposed inside the feed well 12, and the dispersing unit 13 may be of a circular shape having a smaller diameter than the feed well 12, together with the center cage 11 Alternatively, it can optionally be rotated independently. The dispersion unit 13 may have a function of supplying raw water to be purified to the feed well 12. The raw water may be guided upward through the raw water supply means 17 disposed in the base B1 and supplied to the dispersion unit 13. The dispersion unit 13 may have a cylindrical shape, and at least one dispersion hole may be formed on a circumferential surface, and the raw water dispersed into the feed well 12 through the dispersion hole may be aggregated while being rotated. The coagulant may be pre-injected before being supplied through the raw water supply means 17 or the coagulant may be introduced into the dispersion unit 13. The supply of raw water to the dispersion unit 13 or the dispersion of raw water from the dispersion unit 13 to the feed well 12 can be made in a variety of ways and is not limited to the presented embodiment.

A diffusion unit 14 that is entirely conical in shape may be disposed below the feed well 12. A settling hole may be formed in the upper portion of the diffusion unit 14 so that flocculated floc or sludge having a similar size is induced and precipitated. In addition, the diffusion unit 14 may be guided sludge having a small diameter along the outer circumferential surface while being in the shape of a hat. An induction path may be formed on the outer surface of the diffusion unit 14, and the induction path may have a spiral shape, but is not limited thereto. The scraper 15 may be disposed below the diffusion unit 14 or adjacent to the base B1. The scraper 15 may be fixed to the extension arms 151 extending from both sides of the center cage 11, and the extension arms 151 may be coupled to the center cage 11 by a fixing string S such as wire. Can be. A small diameter floc or sludge deposited on the base B1 by the scraper 15 can be guided to the collection units 16a, 16b and collected. Also, the flock directed downward along the inside of the diffusion unit 14 may be collected in the collection units 16a and 16b.

The collection units 16a, 16b may be formed on both sides of the center cage 11, and may be a puddle structure formed on the base B1, but are not limited thereto. The pivot lake 161 is installed inside the collection units 16a and 16b to prevent the formation of a cavity in the process of discharging the collected floc or sludge. For example, the pivot lake 161 may stir sludge or floc while being rotated with the center cage 11. The flotation or sludge can be prevented from floating by the diffusion unit 14 and from the collection units 16a, 16b or the scraper 15 by adjusting the width of the diffusion unit 14 or the separation distance from the base B1. ) Can prevent the sludge from floating in the process of collecting the sludge. Flock or sludge collected in the collection units 16a, 16b may be discharged by a discharge conduit 162 extending outward from the collection units 16a, 16b. In addition, the purified water from which the sludge is removed can form the upper layer of the sedimentation tank (B), and can be discharged to the outside of the sedimentation tank (B) through the discharge unit 19 formed in the upper portion of the sedimentation tank (B). The discharge conduit 162 or the discharge unit 19 may be formed in various structures, and is not limited to the presented embodiment.

Figure 2 shows an embodiment of a feed well applied to the sludge collection device according to the present invention.

Referring to FIG. 2, at least one separation slit 24_1 to 24_L is formed in the feed well 12 to discharge raw water from which sludge has been removed to the outside. The feed well 12 may be composed of a cohesive induction part 21 having an upper rim 231 and a lower rim 232 and a separating part 22 formed under the cohesive induction part 21 while having a cylindrical shape as a whole. . The agglomeration inducing portion 21 or the separating portion 22 may be formed integrally or may be made independently of each other and coupled to each other by the coupling unit 233. At least one separation slit 24_1 to 24_L may be formed along the circumferential surface of the separation portion 22, for example, multiple separation slits 24_1 to 24_L may be formed. The separation slits 24_1 to 24_L may be formed to have various gaps, and may be uniformly disposed along the circumferential surface of the separation portion 22. In addition, the aggregation inducing portion 21 or the separating portion 22 may be formed in various lengths, for example, the separation slits 24_1 to 24_L may be formed over the entire height of the feed well 12. Also, the separation slits 24_1 to 24_L may form a separation path, and the separation path may be made of a structure extending along the circumference of the separation portion 22. Optionally, the separation slits 24_1 to 24_L may have an induction hole structure, and the induction hole may be uniformly formed along the circumferential surface of the separation portion 22.

The aggregation-inducing portion 21 or the separating portion 22 can be made of various structures and is not limited to the presented embodiment.

3 shows an embodiment of a dispersion unit applied to a sludge collection device according to the present invention.

Referring to FIG. 3, at least one dispersion hole 321 for dispersing raw water on the circumferential surface of the dispersion unit 13 may be formed. Raw water including sludge may be supplied to the interior of the dispersion unit 13, and the raw water supplied to the dispersion unit 13 may be dispersed into the feed well. The dispersion unit 13 includes a cylindrical dispersion body 31; And at least one dispersion protrusion 32_1 to 32_L protruding outward from the circumferential surface of the dispersion body 31. The plurality of dispersion protrusions 32_1 to 32_L may be uniformly disposed on the circumferential surface of the dispersion body 31, and the dispersion holes 321 may be formed at the ends of the dispersion protrusions 32_1 to 32_L. End portions of the dispersion protrusions 32_1 to 32_L may be inclined surfaces with respect to the rotational direction, and long hole-shaped dispersion holes 321 may be formed along the height direction of the inclined surfaces. As such, by forming the dispersion hole 321 on the inclined surface, the vortex may be formed while being dispersed from the dispersion unit 13 to the feed well, and the level of floc formation due to agglomeration of the sludge may be improved. The separation slit shown in FIG. 2 may also be formed in a structure similar to the dispersion hole 321, but is not limited thereto.

4 shows an embodiment of a diffusion unit applied to a sludge collection device according to the present invention.

Referring to FIG. 4, the diffusion unit 14 has a conical shape as a whole, and at least one diffusion path 43_1 to 43_N may be formed on an upper surface of the diffusion unit 14.

The diffusion unit 14 includes an inclined guide surface 41 that has an inclined curved shape while being conical or hatched as a whole; A guide hole 42 formed in the center of the inclined guide surface 41; And diffusion paths 43_1 to 43_N extending in a spiral shape outward along the inclined guide surface 41 from the guide hole 42. The floc in which the sludge is aggregated is induced through the induction hole 42 to be precipitated into the collection unit, and sludge having a small diameter along the spiral diffusion paths 43_1 to 43_N is induced and diffused to be separated from water. Can be. The diffusion paths 43_1 to 43_N may be, for example, a groove shape formed on the inclined guide surface 41, and may be formed at various depths. The diffusion paths 43_1 to 43_N may have a spiral shape along the rotational direction of the diffusion unit 14, but are not limited thereto. As described above, the diffusion unit 14 diffuses raw water containing small sludge while selectively preventing the precipitated sludge or flocs from floating in the collection unit.

Diffusion paths 43_1 to 43_N having various structures may be formed in the diffusion unit 14 and are not limited to the presented embodiments.

The sludge collection device of the rotation separation induction method according to the present invention allows the concentration of the sludge to be improved by being agglomerated while being rotated. The sludge collection device installs a dispersing unit disposed inside the feed well so that raw water is uniformly dispersed inside the feed well and space utilization is increased. The collection device according to the present invention is applied to a sedimentation tank having various structures so that a floc having a large diameter and a sludge having a small diameter are settled in different areas, thereby increasing the sludge collection efficiency by collecting the precipitated sludge by a scraper. do.

The present invention has been described in detail with reference to the presented embodiments, but those skilled in the art will be able to make various modifications and modified inventions without departing from the technical spirit of the present invention with reference to the presented embodiments. . The present invention is not limited by such modified and modified inventions, but is limited by the appended claims.

11: Center cage 12: Feed well
13: dispersion unit 14: diffusion unit
15: scraper 16a, 16b: collection unit
17: raw water supply means 18: drive means
19: discharge unit 21: agglomeration induction part
22: separation part 24_1 to 24_L: separation slit
31: dispersion body 32_1 to 32_L: dispersion projection
41: inclined guide surface 42: guide hole
43_1 to 43_N: Diffusion pathway 151: Extended cancer
161: pivot lake 162: discharge conduit
231: upper border 232: lower border
233: coupling unit 321: dispersion hole
B: settling tank B1: base
L: Inspection means S: Fixed string

Claims (2)

In the sludge collection device installed in the sedimentation tank (B) to separate the sludge from the raw water,
A center cage 11 or a central axis installed in the sedimentation tank B;
A feed well 12 that is coupled to the center cage 11 or the central axis and rotates to separate sludge from raw water;
A dispersing unit (13) for dispersing the raw water that is disposed and provided inside the feed well (12);
A diffusion unit 14 disposed under the feed well 12;
A scraper 15 for guiding the sludge dispersed in the dispersion unit to the collection units 16a, 16b;
Raw water supply means 17 for supplying raw water to the dispersing unit 13;
Drive means 18 for the operation of the center cage 11 or the central axis;
A discharge conduit 162 extending outward from the collection units 16a, 16b to discharge the sludge to the outside;
At least one separation slit (24_1 to 24_L) for discharging the raw water from which sludge is removed to the feed well (12); And
Including the checking means (L) to allow access to the center cage 11 from the outside of the sedimentation tank (B),
The diffusion unit 14 is formed at the center of the inclined guide surface 41 which is conically shaped as a whole, and guides the inclination from the guide hole 42 and the guide hole 42 to allow the floc in which the sludge is agglomerated to be precipitated into the collection unit. A diffusion separation path 43_1 to 43_N extending in a spiral shape outward along the surface 41 is formed, and the sludge collection device of the rotation separation induction method is characterized in that. The method according to claim 1, Sludge collection apparatus of the rotation separation induction method, characterized in that at least one dispersion hole (321) for dispersing raw water is formed on the circumferential surface of the dispersion unit (13).

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