KR20230005082A - 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 collecting apparatus inducing separation by rotation and, more specifically, to a sludge collecting apparatus inducing separation by rotation, which rotates raw water to separate and collect sludge from the raw water. The sludge collecting apparatus inducing separation by rotation according to the present invention comprises: a center cage (11) or a central shaft installed in a sedimentation tank (B); a feed well (12) coupled to the center cage (11) or the central shaft to rotate and separate sludge from the raw water; a dispersion unit (13) disposed inside the feed well (12) to disperse the supplied raw water; a diffusion unit (14) disposed at the bottom of the feed well (12); a scraper (15) guiding the sludge dispersed in 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 actuation of the center cage (11) or the central shaft; a discharge unit (19) discharging sludge to the outside; and an inspection means (L) allowing access to the center cage (11) from the outside of the sedimentation tank (B).

Description

Sludge collection device with rotation separation induction method {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 type, and more specifically, to a rotational separation induction type sludge collection device that separates and collects sludge from raw water by rotating raw water.

In sedimentation tanks installed in sewage treatment plants or water purification plants, sludge can be separated from raw water and purified. Flocculated sludge settles downward, and scum contained in raw water or generated during the flocculation process may float upward. Sludge formed in the form of flocculation and flocculation needs to be separated by an appropriate separation means, and various sludge settling devices related thereto are known in the art. Patent Registration No. 10-1249777 has a venturi-type center feedwell inside the sedimentation tank, and the sludge contained in the raw water is mixed and coagulated by the pressure generated by the raw water flowing into the center feedwell, resulting in coarsening. Therefore, a sludge settling device capable of shortening the time for sludge to settle on the bottom surface of a settling tank is disclosed. Patent Registration No. 10-1701253 discloses a circular sludge collector for rapid flocculation and sedimentation. And Patent Registration No. 10-1813546 discloses a sludge collector of a circular settling tank that slows down the descending speed of raw water and maximizes overflow weir to significantly improve raw water treatment efficiency and ensure smooth and stable discharge of scum. do. It is advantageous to allow the sludge that is coagulated in the settling tank to settle downward while allowing the purified water to be guided outward and discharged. It is also advantageous to allow sludge with a small diameter to be dispersed additionally from the floc that is precipitated inside the feedwell and guided downward. However, the prior art does not disclose a sedimentation tank having such a structure.

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

Prior Art 1: Patent Registration No. 10-1249777 (DMNTech Co., Ltd., etc., announced on April 02, 2013) Sludge Settling Device Prior Art 2: Patent Registration No. 10-1701253 (Gaontech Co., Ltd., published on February 2, 2017) Rapid Flocculation Sedimentation Circular Sludge Collector Prior Art 3: Patent Registration No. 10-1813546 (Hyosung Enviro Co., Ltd., published on December 22, 2017) Sludge collector of circular sedimentation basin

An object of the present invention is to induce rotary separation to improve the treatment efficiency of sludge by inducing floc in a flocculated state to settle downward while raw water containing coagulated sludge or sludge is rotated and purified water is discharged to the outside It is to provide a sludge collection device of the method.

According to a preferred embodiment of the present invention, a sludge collection device of a rotational separation induction type includes a center cage or a central axis installed in a settling tank; A feed well that is coupled to a center cage or a central shaft and rotates to separate sludge from raw water; Dispersing unit disposed inside the feed well to disperse the supplied raw water; a diffusion unit disposed below the feed well; a scraper leading the sludge dispersed in the dispersing unit to the collecting unit; raw water supply means for supplying raw water to the dispersion unit; drive means for actuating the center cage or the center shaft; a discharge conduit extending from the collection unit to the outside to discharge the sludge to the outside; and an inspection means allowing access to the center cage from the outside of the settling tank.

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

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

According to another preferred embodiment of the present invention, the diffusion unit is conically shaped as a whole, and at least one diffusion path is formed on the upper surface of the diffusion unit.

The rotation separation induction type sludge collection device according to the present invention increases the concentration of the sludge by coagulating it while rotating it. The sludge collection device installs a dispersion unit disposed inside the feed well to increase space utilization while uniformly distributing the raw water inside the feed well. The collection device according to the present invention is applied to sedimentation tanks having various structures so that flocs with a large diameter and sludge with a small diameter settle in different areas, and the sedimentation sludge is collected by a scraper, thereby increasing the sludge collection efficiency. do.

1 shows an embodiment of a sludge collection device of a rotation separation induction method according to the present invention.
2 shows an embodiment of a dispersion unit applied to the sludge collection device according to the present invention.
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 the sludge collection device according to the present invention.

Below, the present invention will be described in detail with reference to the embodiments presented in the accompanying drawings, but the embodiments are 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, so repeated descriptions are not made unless necessary for understanding 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 of.

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

Referring to FIG. 1, a sludge collection device installed in a settling tank (B) to separate sludge from raw water includes a center cage 11 or a central shaft installed in the settling tank (B); A feed well 12 that is coupled to the center cage 11 or the central shaft and rotates to separate sludge from raw water; A dispersion unit 13 disposed inside the feed well 12 to disperse the supplied raw water; a diffusion unit 14 disposed below the feed well 12; a scraper 15 which guides the sludge dispersed in the dispersing unit to the collecting units 16a and 16b; raw water supply means 17 for supplying raw water to the dispersion unit 13; drive means 18 for actuating the center cage 11 or the central shaft; a discharge conduit 162 extending outwardly from the collection units 16a and 16b to discharge the sludge to the outside; and an inspection means (L) allowing access to the center cage (11) from the outside of the settling tank (B).

The sludge collection device may be installed in a settling tank (B) having various uses or structures, and the settling tank (B) may have 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 settling 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 at a central portion of the base (B1). The center cage 11 may extend in a direction perpendicular to the base B1 while being a column shape as a whole. And the center cage 11 can be rotated by a driving means 18 such as a motor, and by the rotation of the center cage 11, for example, the feed well 12 or other components coupled thereto can be rotated. . The center cage 11 may have a function of serving as an operating center by being installed in a vertical direction at the central portion of the collection device. The center cage 11 may have a rectangular pillar shape, a polygonal pillar shape, or a cylindrical shape as a whole, and may be connected to the driving unit 18 and rotated. Depending on the size of the settling tank (B) or the size of the sludge collection device, such a columnar center cage 11 may be installed, or a central shaft may be installed instead of the center cage 11. The central shaft may be connected to the driving means by appropriate means, and may also be connected to the central shaft by connecting members to other components of the sludge collection device. As such, the present invention is not limited by the structure of the center cage 11 or whether the 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 a drum shape as a whole. Raw water containing sludge may be supplied into the feed well 12 , and the feed well 12 may be rotated by the rotation of the center cage 11 . As the sludge or sludge is aggregated by the rotation of the feed well 12, it may be made in the form of a flock. A separation hole or separation slit may be formed in the feed well 12, and raw water from which sludge is removed may be separated through the separation slit in a direction indicated by an arrow. Along with this, sludge or sludge aggregated in a floc form or similar form may be guided toward the center and precipitated downward while the sludge removal raw material is discharged to the outside of the feed well 12. 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 rotational speed can be set appropriately.

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

A diffusion unit 14 having a generally conical shape may be disposed below the feed well 12 . A sedimentation hole may be formed in the upper portion of the diffusion unit 14 to induce flocculation or sludge having a size similar thereto to be precipitated. In addition, the diffusion unit 14 becomes a hat shape, and sludge having a small diameter can be induced along the outer circumferential surface. 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. A scraper 15 may be disposed below the diffusion unit 14 or adjacent to the base B1. The scraper 15 may be fixed to an extension arm 151 extending from the center cage 11 on both sides, and the extension arm 151 may be coupled to the center cage 11 by a fixing string S such as a wire. can Small-diameter floes or sludge precipitated on the base B1 by the scraper 15 can be guided to the collection units 16a and 16b to be collected. Also, floes directed downward along the inside of the diffusion unit 14 can be collected in the collection units 16a and 16b.

The collection units 16a and 16b may be formed on both sides of the center cage 11 and may be a puddle structure formed on the base B1, but is not limited thereto. Since the pivot rake 161 is installed inside the collection units 16a and 16b, it is possible to prevent the formation of cavities in the process of discharging the collected flocs or sludge. For example, the pivot rake 161 may stir sludge or floc while rotating together with the center cage 11 . Flood or sludge can be prevented from floating by the diffusion unit 14, by adjusting the width of the diffusion unit 14 or the separation distance from the base B1 from the collection units 16a, 16b or from the scraper 15 ) can prevent the sludge from floating in the process of collecting the sludge. The floc or sludge collected in the collection units 16a and 16b may be discharged by a discharge conduit 162 extending outward from the collection units 16a and 16b. In addition, the purified water from which the sludge is removed may form an upper layer of the settling tank (B), and may be discharged to the outside of the settling tank (B) through the discharge unit 19 formed at the upper part of the settling 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.

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 has a cylindrical shape as a whole and may include an aggregation inducing portion 21 having an upper rim 231 and a lower rim 232 and a separation portion 22 formed below the aggregation inducing portion 21. . The aggregation inducing part 21 or the separating part 22 may be integrally formed or may be made independently of each other and coupled to each other by a 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 , and for example, a plurality of 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 part 21 or the separation part 22 may be formed in various lengths, and 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 a guide hole structure, and the guide holes may be uniformly formed along the circumferential surface of the separation portion 22 .

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

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

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

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

Referring to FIG. 4 , the diffusion unit 14 may have 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 has an inclination inducing surface 41 which is in the shape of an inclined curved surface while being in the shape of a cone or a hat as a whole; an induction hole 42 formed in the center of the inclined induction surface 41; and diffusion paths 43_1 to 43_N extending from the guide hole 42 in a spiral shape outward along the inclined guide surface 41 . Through the induction hole 42, the floc in which the sludge is aggregated is induced and can be deposited in the collection unit, and the sludge having a small diameter is induced and diffused along the spiral-shaped diffusion paths 43_1 to 43_N to be separated from water. can For example, the diffusion paths 43_1 to 43_N may be in the shape of grooves formed on the inclined guide surface 41 and may be formed with 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 the raw water containing the small sludge while selectively preventing the sludge or floe settled in the collection unit from floating.

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 embodiment.

The rotation separation induction type sludge collection device according to the present invention increases the concentration of the sludge by coagulating it while rotating it. The sludge collection device installs a dispersion unit disposed inside the feed well to increase space utilization while uniformly distributing the raw water inside the feed well. The collection device according to the present invention is applied to sedimentation tanks having various structures so that flocs with a large diameter and sludge with a small diameter settle in different areas, and the sedimentation sludge is collected by a scraper, thereby increasing the sludge collection efficiency. do.

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

11: center cage 12: feed well
13: dispersion unit 14: diffusion unit
15: scraper 16a, 16b: collection unit
17: raw water supply means 18: driving means
19: discharge unit 21: flocculation inducing section
22 Separation portion 24_1 to 24_L: Separation slit
31: dispersion body 32_1 to 32_L: dispersion protrusion
41: inclined guide surface 42: guide hole
43_1 to 43_N: diffusion path 151: extension arm
161: pivot rake 162: discharge conduit
231 upper border 232 lower border
233: combining unit 321: distribution hole
B: sedimentation tank B1: base
L: check means S: fixed string

Claims (1)

In the sludge collection device installed in the settling tank (B) to separate sludge from raw water,
a center cage (11) installed in the settling tank (B);
A feed well 12 that is coupled to the center cage 11 and rotates to separate sludge from raw water;
A dispersion unit 13 disposed inside the feed well 12 to disperse the supplied raw water;
a diffusion unit 14 disposed below the feed well 12;
a scraper 15 which guides the sludge dispersed in the dispersing unit to the collecting units 16a and 16b;
raw water supply means 17 for supplying raw water to the dispersion unit 13;
drive means 18 for actuating the center cage 11;
a discharge conduit 162 extending outwardly from the collection units 16a and 16b to discharge the sludge to the outside; and
Including an inspection means (L) that allows access to the center cage (11) from the outside of the settling tank (B),
The diffusion unit 14 has a conical shape as a whole, including an inclined induction surface 41 which is an inclined curved surface shape; an induction hole 42 formed in the center of the inclined induction surface 41; and groove-shaped diffusion paths 43_1 to 43_N extending spirally outward from the induction hole 42 along the inclined guide surface 41, and through the induction hole 42, the floc in which the sludge is aggregated flows downward. is induced to precipitate into the collection unit, and sludge having a small diameter is induced and diffused along the spiral diffusion path (43_1 to 43_N) to be separated from water,
The feed well 12 has a cylindrical shape as a whole and includes an aggregation inducing portion 21 having an upper rim 231 and a lower rim 232, a separation portion 22 formed below the aggregation inducing portion 21, and independently of each other. It consists of a coupling unit 233 that combines the coagulation induction part 21 and the separation part 22, and along the circumferential surface of the separation part 22 to discharge the sludge-removed raw water to the outside, a plurality of gaps Separation slits 24_1 to 24_L are formed,
The dispersion unit 13 includes a cylindrical dispersion body 31; and a plurality of dispersing protrusions 32_1 to 32_L protruding outward from the circumferential surface of the dispersing body 31, and ends of the dispersing protrusions 32_1 to 32_L are inclined surfaces with respect to the rotational direction, and the height direction of the inclined surface is Sludge collection device of a rotational separation induction method, characterized in that a long hole-shaped dispersion hole 321 is formed along the.

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