KR101249777B1 - Sludge sedimentation equipment - Google Patents

Abstract

PURPOSE: A sludge sedimentation apparatus is provided to install a center cage rotated by an actuating motor on a raw water pump pipe at a low speed, thereby improving the precipitation efficiency of sludge and floc, and to collect and remove the sludge and the floc using a center cage rotated by an actuating motor and a scum skimmer rotated with being interlocked with the center cage. CONSTITUTION: A sludge sedimentation apparatus(1) includes a precipitation tank(10), a center feed well(30), and a center cage(50) installed inside the center feed well. A raw water pump pipe(13) is installed inside the center feed well installed inside the precipitation tank. The center cage is rotated by an actuating motor on the raw water pump pipe. The center cage includes a raw water distributing plate(55) detachably installed outside the upper side of the center cage, a rotary distributing plate(57) installed outside the center cage, and a scum skimmer(59). The raw water distributing plate has multiple through-holes for dispersedly feeding raw water inside the center feed well, and has a closed space among the through-hole in order to block and drop sludge. The rotary distributing plate is rotated by being interlocked with the center cage. The scum skimmer is rotated by being interlocked with the center cage, and one side of the scum skimmer is coupled to the outside of the lower side of the center cage in order to collect the precipitated sludge on the bottom of the precipitation tank.

Description

 Sludge sedimentation equipment

The present invention relates to a sludge settling device, and more particularly, by having a venturi-type center feed well in a sedimentation tank, sludge contained in raw water is mixed with the pressure generated by the raw water flowing into the center feed well. The present invention relates to a sludge settling device which can shorten the time for the sludge to settle to the bottom of the sedimentation tank due to coagulation and coarsening.

Sedimentation tank is a tank for segregation of solid and liquid by sedimentation of suspended solids (solid particles dispersed in water) by using specific gravity difference. At this time, the suspended material may be described as sludge or sludge contained in the raw water. The sedimentation tank is the final process of wastewater treatment plant and water treatment plant, and it has a direct effect on the quality of the effluent (water).
As a background technology of the present invention, Korean Patent Application Publication Nos. 10-2004-0033108 (April 21, 2004.), 10-2010-0104572 (2010.09.29.) And Patent No. 10-0378135 (2003.04) .07.). That is, the contaminants in the raw water or the waste water are agglomerated by a treatment method for neutralizing and flocculating the contaminants in the raw water or waste water, and the contaminated contaminants as described above are precipitated and removed by a physical method. Such a precipitation tank has been developed in various forms such as a circular precipitation tank, a rectangular precipitation tank. Circular sedimentation tank is widely applied because of its simple structure and easy installation, but it is known to have poor performance compared to rectangular sedimentation tank. And the rectangular sedimentation tank has a relatively good performance compared to the circular sedimentation tank, but the structure is complicated and the installation is complicated, expensive and difficult to maintain.

In general, the conventional circular sedimentation tank widely used is a device using natural sedimentation by gravity. In this conventional circular sedimentation tank, sludge is uniformly settled to the bottom of the sedimentation tank over a long time.

However, the conventional circular sedimentation tank has been inefficient because it takes a long time to settle the sludge separated from the raw water to the bottom of the sedimentation tank.

In addition, such a conventional circular sedimentation tank has a problem in that the required area becomes large because the size of the sedimentation tank must be large in order to increase the sedimentation efficiency, thereby increasing the installation and maintenance costs.

The present invention has been made to solve the above problems,

The problem to be solved by the present invention is to install a raw water distribution plate on the outside of the raw water pump pipe installed in the sedimentation tank so that the raw water can be supplied evenly inside the center feedwell.

In addition, the problem to be solved by the present invention is to install a venturi-type center feed well in the settling tank so that the sludge mixed and agglomerated by the pressure inside the center feed well to precipitate effectively on the bottom of the settling tank There is a purpose.

In addition, the problem to be solved by the present invention is to install a rotary distribution plate that rotates at a low speed with the center cage at the center of the center feedwell spaced apart by spreading the raw water introduced into the center feedwell to the entire inner diameter area in the middle of the settling tank The sedimentation efficiency is effective because sedimentation takes place in the entire inner diameter area of the sedimentation tank, and the purpose is to prevent re-injury of the precipitated sludge.

The problem to be solved of the present invention is not limited to the above-mentioned technical problem, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

Sludge sedimentation apparatus according to the present invention for achieving the above object, the raw water pump pipe into which the raw water is introduced, the sedimentation tank is installed vertically to the center, and the center is installed in the sedimentation tank, the raw water pump pipe is installed in the center It is provided inside the feed well and the center feed well, it can be achieved by a center cage that is rotatably installed at a low speed by a drive motor around the raw water pump pipe.

The center cage is detachably provided outside the center cage, the raw water distribution plate is formed with a plurality of through-holes so that the raw water is distributed evenly into the center feed well, the outer peripheral edge is formed to be inclined downward, the center The one side is fixed to the outer side of the center cage is provided to be fixed to the outer side of the center cage and the rotatable distribution plate is installed rotatably interlocked with the center cage, the rotatable interlocking with the center cage is installed on the bottom surface It is preferable to further include a scum skimmer capable of collecting the precipitated sludge.

The raw water pump pipe, it is preferable that the raw water discharge port is formed on the upper outer peripheral surface of the raw water pump pipe so that the raw water passes through the raw water distribution plate provided on the outside of the center cage.

The settling tank, it is preferable that the sludge collecting groove is formed in the lower portion to collect the sludge collected by the scum skimmer.

The center feed well may have a cylindrical shape having an upper portion having a width smaller than the inner diameter area of the settling tank, and a venturi type having a cylindrical shape having a width narrower than the upper width toward the lower portion.

The center feed well may include a circular inclined plate having an outer circumferentially inclined downward to correspond to the rotational distribution plate.

The center feedwell may be mixed with the receiving portion accommodating the raw water passing through the raw water distribution plate, the inclined surface inclined so that the raw water may be guided to the lower center, and the pressure generated by the raw water passing. It is preferable to further include a pressure generating unit for generating agglomeration and an outlet for discharging the raw water.

In the pressure generating unit, it is preferable that flocs are formed by the mixing and flocculation of the sludge contained in the raw water.

Preferably, the center cage further includes a plurality of guide rollers that are guided to the outer surface of the raw water pump pipe inside the center cage to prevent the center cage from tilting when the driving motor rotates.

The rotation distribution plate is preferably fixed to the outer surface of the center cage, it is provided to be spaced apart below the center feed well.

The rotation distribution plate, it is preferable that the outer periphery of the rotation distribution plate is formed to be inclined downward.

The scum skimmer, at least one sludge collecting frame to collect the sludge deposited on the bottom surface of the sedimentation tank to the sludge collecting groove, and at least one sludge to collect the sludge collected in the sludge collecting groove. It is preferable to further include a collecting frame.

The sludge collecting frame or the sludge collecting frame may further include a plurality of scrapers to scrape the sludge.

As described above, the raw water distribution plate is installed in the sludge settling apparatus according to the present invention has an effect that can be easily separated from the sludge.

By installing a venturi-type center feed well in the sludge settling apparatus according to the present invention, there is an effect of easily mixing and solidifying sludge inside the center feed well. In addition, even if the size of the sedimentation tank is not increased in order to increase the sedimentation efficiency of the sludge, the sedimentation efficiency is greatly improved by the Venturi-type center feedwell. In addition, since the required area of the sedimentation tank does not have to be large, it is easy to install and there is an effect of reducing installation and maintenance costs.

1 is a cross-sectional view of the sludge settling apparatus according to the present invention from the front.
2 is a partial perspective view of the sludge settling apparatus according to the present invention.
3 is a plan view of the sludge settling apparatus according to the present invention.
Figure 4 is a plan view showing a guide roller provided in the center cage.
5 shows a scraper provided in the sludge collecting frame and the sludge collecting frame.
Figure 6 shows an embodiment of a sludge settling apparatus according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Unless defined otherwise, all terms herein are the same as the general meaning of the term as understood by one of ordinary skill in the art to which this invention belongs, and if the terms used herein conflict with the general meaning of the term Are as defined herein.

On the other hand, the configuration or control method of the device to be described below is not intended to limit the scope of the present invention, but to describe the embodiment of the present invention, the same reference numerals are used throughout the specification the same components Indicates.

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to FIGS. 1 to 5. 1 is a cross-sectional view of the sludge settling apparatus according to the present invention from the front, Figure 2 is a partial perspective view showing a sludge settling apparatus according to the present invention, Figure 3 is a plan view from above the sludge settling apparatus of the present invention, Figure 4 is A guide roller provided inside the center cage is shown, and FIG. 5 shows a scraper mounted on the scum skimmer.

As shown in Figure 1 and 2, the sludge settling apparatus 1 according to the present invention, the sedimentation tank 10, the center feed well 30 is installed in the center of the sedimentation tank 10, the center feed well 30 It includes a center cage 50 is provided inside the rotating by the drive motor (51).

The sedimentation tank 10 has a housing 11 that can accommodate the raw water therein, a raw water pump tube 13 which can introduce the raw water into the housing 11 from the outside, and the sludge separated from the raw water is collected. It may include a sludge collecting groove (15).

The housing 11 preferably has a cylindrical shape at the top, and the bottom surface 111 extending from the top has a hopper shape inclined toward the lower center. This is to allow the sludge separated from the raw water to be collected in the sludge collecting groove 15 which will be described later along the bottom surface 111 without a separate device.

On the other hand, the housing 11 is further provided with a top water discharge wear 115 so as to discharge only the upper water on the upper inner circumferential surface, it is installed in a position spaced below the upper opening 113 of the settling tank 10 It is preferable. Here, the supernatant is preferably interpreted as sludge remaining in the raw water sludge is separated from the raw water precipitated on the bottom surface 111 of the sedimentation tank (10). This is to prevent the supernatant from being filled up to the upper portion of the settling tank 10 to flow outside the settling tank 10.

At this time, in order to deliver the upper water to the outside of the upper water discharge wear 115 may be provided by using a separate pump pipe or hose.

Therefore, the supernatant discharged through the supernatant discharge wear 115 is discharged to a river or the sea after chlorine disinfection. Thus, even if the raw water is continuously introduced into the settling tank 10 can be prevented from overflowing the raw water in the settling tank (10).

The raw water pump pipe 13 is preferably installed vertically to the center of the settling tank (10). Here, the raw water pump pipe 13 is to be installed for the inflow of raw water into the settling tank 10 from the outside. At this time, the raw water pump pipe 13 is provided to extend from the outside into the sedimentation tank 10, but is preferably installed vertically through the lower center of the sedimentation tank 10, the raw water pump pipe 13 from the sedimentation tank 10 from the outside It may be provided to extend inside the vertically through the central upper portion of the settling tank (10).

In the sludge settling apparatus 1 according to the present invention, the raw water pump pipe 13 is provided to extend from the outside into the settling tank 10, and will be described below as being installed vertically through the center lower portion of the settling tank 10. .

On the other hand, the raw water pump pipe 13, as shown in Figure 2, it is preferable that the raw water discharge port 131 for discharging the raw water to the upper side of the raw water pump pipe (13).

This, because the raw water pump pipe 13 is installed vertically to the lower center of the sedimentation tank 10, the raw water discharge port to the upper side of the raw water pump pipe 13 to supply the raw water to the center feedwell 30 to be described later 131 is formed.

On the other hand, the lower portion of the settling tank 10 is provided with a sludge collecting groove 15 for collecting the sludge separated from the raw water.

As shown in Figure 1 and 2, the sludge collection groove 15 is provided with a bottom surface 111 at a position spaced apart from the outer periphery of the raw water pump pipe 13, the recess is formed in a circular shape It is preferable.

This is to form a space in which the sludge collection frame 593 of the following scum skimmer 59 is located to rotate to collect the sludge collected in the sludge collection groove 15, which will be described later. do.

On the other hand, the sludge collecting groove 15, the inner side of the sludge discharge port (not shown) that can be discharged to the outside is preferably further provided. At this time, the sludge discharge port (not shown) may be provided by using a separate pump pipe or hose to deliver the collected sludge to the outside.

Therefore, the sludge separated from the raw water through the sludge discharge port (not shown) can be easily discharged to the outside of the settling tank (10).

The center feed well 30 is preferably installed in the center of the settling tank 10 to accommodate the raw water pump pipe 13 installed in the settling tank 10.

At this time, the center feed well 30 is a cylindrical shape having an upper portion having a width smaller than the inner diameter area of the settling tank, it is preferably formed in a venturi type formed in a cylindrical shape narrower than the upper width toward the bottom. This is to apply the Venturi effect to the inside of the center feed well 30. Here, the Venturi effect is an effect caused by Bernoulli's theorem, and the pressure is lowered at a place where the fluid velocity is high. For example, if you make the hole in the end of the water hose small, the water will come out hard. At this time, the air is quickly passed in the portion where the hole is smaller, the pressure is lowered. Therefore, the center feed well 30 is manufactured in a venturi type having a wide top and a narrow bottom so that mixing and agglomeration may occur inside the center feed well 30.

The lower end of the center feed well 30 is formed in the shape corresponding to the rotation distribution plate 57 is fixed to the center cage 50 to be described later that the circular inclined plate 31 is formed to be inclined downward in the outer periphery Preferred embodiments are described later.

On the other hand, the center feed well 30 is an accommodating part 33 for receiving raw water, an inclined surface 35 on which raw water is guided, a pressure generating part 37 for mixing and agglomeration occurring, and a discharge part 39 for discharging raw water. ).

The receiving portion 33 receives the raw water discharged through the raw water pump pipe 13 is located in the center of the center feed well (30). At this time, the raw water is accommodated so as to be evenly distributed into the receiving portion 33 through the raw water distribution plate 55 provided on the outer center cage 50 to be described later.

The inclined surface 35 preferably forms a constant inclination angle so that the raw water accommodated in the receiving portion 33 may be guided to the pressure generating portion 37. Here, the inclination angle can be designed by the designer arbitrarily, so that the raw water can be guided more efficiently to the pressure generating unit 37.

At this time, when the raw water hits the inclined surface 35, sludge contained in the raw water may be separated from the raw water and guided to the pressure generating unit 37 along the inclined surface 35.

As shown in FIG. 1, the pressure generating unit 37 is located below the accommodating part 33, and is preferably formed to have a width smaller than that of the accommodating part 33. This is to apply the above-mentioned Venturi effect.

On the other hand, some of the sludge passing through the pressure generating unit 37 may be mixed with flocculation due to the Venturi effect to be transformed into flocs. In this case, the floc refers to a coarse aggregate of sludge (colloid in liquid, other suspended particles, etc.).

Therefore, in the sludge settling apparatus 1 of the present invention, when the sludge is deformed into flocs by mixing and flocculation, the load is generated more than the sludge and the settling speed is increased. That is, the sludge contained in the raw water flowing into the sludge settling apparatus 1 of the present invention will be able to quickly settle to the bottom surface 111 of the settling tank 10.

The discharge part 39 is formed in the spaced space between the circular inclined plate 31 formed at the bottom of the center feed well 30 and the rotary distribution plate 57 fixedly installed in the center cage 50 to be described later. . At this time, the interval between the circular slope plate 31 and the rotation distribution plate 57 can be arbitrarily determined by the user. This is to effectively discharge the raw water discharged through the discharge portion 39, sludge separated from the raw water, flocs generated by mixing and flocculation, etc. by arbitrarily adjusting the width of the discharge portion 39.

As shown in Figure 2, the center cage 50 is provided so as to surround the outer periphery of the raw water pump pipe 13, the raw water discharged through the raw water discharge port 131 of the raw water pump pipe 13 The center feed well 30 may be provided with a grid shape or various shapes that are open on all sides so as to be supplied into the center feed well 30.

At this time, the center cage 50 is provided with a drive motor 51 in the upper portion of the center cage 50 is preferably installed so as to rotate at a low speed around the raw water pump pipe 13, a detailed description will be described later.

On the other hand, as shown in Figures 1 to 4, the center cage 50, the guide roller 53 provided in the center cage 50, the raw water discharged from the raw water pump pipe 13 is passed through Raw water distribution plate 55, the rotary distribution plate 57 is fixed to the center cage 50 and rotates with the center cage 50, to collect the sludge precipitated on the bottom surface 111 of the settling tank 10 It further includes a scum skimmer 59.

At least two guide rollers 53 are provided on the inner lower portion of the center cage 50, and are preferably guided to the outside of the raw water pump pipe 13.

This allows the center cage 50 to rotate without tilting the raw water pump pipe 13 without the guide roller 53 being obstructed when the center cage 50 is rotated by the drive motor 51. For sake.

As shown in Figure 2, the raw water distribution plate 55 is detachably provided to the front surface of the upper surface of the center cage 50, the raw water discharged through the raw water discharge port 131 of the raw water pump pipe (13) It is preferable that a plurality of through holes 551 are formed to pass therethrough.

When the raw water introduced into the raw water pump pipe 13 is discharged through the raw water discharge port 131, the raw water passes through the through hole 551 formed in the raw water distribution plate 55 to enter the center feed well 30. This is to supply evenly distributed.

Meanwhile, as the raw water passes through the raw water distribution plate 55, sludge that is relatively large in sludge included in the raw water may be separated from the raw water by hitting a space blocked between the through hole 551 and the through hole 551.

The rotation distribution plate 57 is preferably installed to be fixed to the center cage 50 outside the rotatable rotation as the center cage 50 rotates.

The raw water discharged through the discharge part 39 on the basis of the rotation distribution plate 57 as the rotation distribution plate 57 fixed to the center cage 50 is rotated by the drive motor 51, This is to form the diffusion layer 5 made of sludge, floc and the like.

At this time, the center cage 50, as described above, it is preferable to rotate at a low speed by the drive motor 51, this is to prevent the vortex phenomenon caused by the rotation at high speed.

Therefore, the diffusion layer 5 is distributed over the entire inner diameter area of the settling tank 10 so that sludge and floc, etc. can obtain the settling efficiency corresponding to the volume of the settling tank. In addition, by forming the diffusion layer 5, it is also possible to prevent re-injuries such as precipitated sludge and floc.

On the other hand, the rotation distribution plate 57 is formed to be inclined to the outer periphery to the lower portion corresponding to the circular inclined plate 31 of the center feed well 30, a position spaced apart by a predetermined interval below the center feed well 30 It is preferable to install in. This is not only to form a space constituting the discharge portion 39, but also to form an outer peripheral edge inclined downward, so that sludge and flocs, etc. are guided to effectively discharge to the outside of the discharge portion 39.

The scum skimmer 59 is preferably installed to be fixed to the outer side of the lower center cage 50 so that the center cage 50 is rotatable interlocked as the center cage 50 rotates.

This is to collect the sludge and floc deposited in the bottom surface 111 of the sedimentation tank 10 by the scum skimmer 59 fixed to the center cage 50 in the sludge collection groove 15.

At this time, the center cage 50, as described above, is preferably rotated at a low speed by the drive motor 51, which is, sludge and floc precipitated on the bottom surface 111 of the sedimentation tank 10 at a high speed This is to prevent floating due to rotation.

On the other hand, the scum skimmer 59 is a sludge collection frame 591 that can collect the sludge and floc deposited on the bottom surface 111 of the sedimentation tank 10 and the sludge collection groove (15), and the sludge collection groove ( And a sludge collecting frame 593 capable of collecting sludge and floc collected in 15).

The sludge collection frame 591 is preferably formed to have a length from the outside of the center cage 50 to the inner surface of the settling tank 10, which is the entire bottom surface 111 of the settling tank 10 This is to collect the sludge and floc deposited in the sludge collection groove (15).

On the other hand, the sludge collection frame 591 is a first sludge collection frame (5911) having a length up to the inner surface of the sedimentation tank 111, and the second sludge having a length smaller than the first sludge collection frame (5911) It may further include a collection frame (5913).

This is to increase the efficiency in which sludge and floc are collected into the sludge collecting groove 15 by the first sludge collecting frame 5911 and the second sludge collecting frame 5913.

Accordingly, the efficiency of collecting sludge and floc by the sludge collecting frame 591 having different lengths is increased, and the load of the sludge collecting frame 591 supported by the center cage 50 can be reduced. The load on the driving motor 51 is reduced.

On the other hand, the sludge collection frame 591 is one side is fixed to the outside of the center cage 50, the other side may be supported by a wire or a separate resilient means.

This is, when the sludge collection frame 591 collects the sludge and floc precipitated in the bottom surface 111 of the sedimentation tank 10, the bottom surface of the sedimentation tank 10 so that the sludge collection frame 591 is not caught on the bottom surface. This is to install corresponding to the inclination of the 111.

The sludge collecting frame 593 is fixedly coupled to the lower portion of the sludge collecting frame 591, and is located inside the sludge collecting groove 15.

Therefore, as the center cage 50 rotates, the sludge collecting frame 593 rotates and interlocks to collect the sludge and the floc collected in the sludge collecting groove 15.

Meanwhile, the scum skimmer 59 may further include a scraper 595 capable of scraping sludge and floc.

At this time, the scraper 595 is preferably used a rubber material.

This, when scraping together the sludge and floc deposited in the bottom 111 or the sludge collecting groove 15 of the settling tank 10, as well as scrape more efficiently, reduce the wear or damage of the scraper (595). To make it possible.

At this time, the scraper 595, as shown in Figure 5 (a), a plurality of scrapers 595 may be installed in an oblique direction on the lower surface of the sludge collection frame (591). This is to allow the sludge and floc deposited on the bottom surface 111 of the sedimentation tank 10 to be sequentially collected into the sludge collection groove 15. In addition, the scraper 595 may be installed on both side and bottom surfaces of the sludge collecting frame 593, as shown in Figure 5 (b). This is to scrape and collect the sludge and floc located in the front of the sludge collection groove (15).

Therefore, the sludge 595 may collect the sludge and the floc more effectively in the sludge collecting groove 15, and the sludge and the floc collected in the sludge collecting groove 15 may be collected.

Hereinafter, with reference to the drawings for the principle of operation of the sludge settling device 1 according to the present invention will be described in detail a preferred embodiment.

6 is an embodiment of a sludge settling apparatus according to the present invention.

First, the raw water is introduced into the raw water pump pipe 13 buried below the settling tank (10).

Here, the raw water pump pipe 13 is buried under the sedimentation tank 10 to be built vertically to the inner center of the sedimentation tank 10, the raw water discharge port 131 of the raw water pump pipe 13 erected perpendicularly to the sedimentation tank 10 Use a pump to discharge the raw water.

Next, the raw water discharged through the raw water discharge port 131 passes through the raw water distribution plate 55 provided in the center cage 50.

For this reason, the raw water is constantly supplied into the center feed well 30 while passing through the through hole 551 formed in the raw water distribution plate 55.

Next, the raw water is received in the receiving portion 33 of the center feed well 30, and then guided to the pressure generating portion 37 along the inclined surface 35. At this time, when the raw water is supplied into the center feed well 30 while passing through the raw water distribution plate 55, the raw water hits the inner surface or the inclined surface 35 of the receiving portion 33, the sludge contained in the raw water The effect is that some of the parts are separated.

Next, raw water and sludge guided along the inclined surface 35 pass through the pressure generating unit 37.

At this time, in the pressure generating unit 37, pressure is applied to the raw water and the sludge passing through the pressure generating unit 37 by the venturi effect. For this reason, in the pressure generating part 37, mixing and agglomeration generate | occur | produce, and a floc is formed.

Thereafter, raw water, sludge, floc, and the like are discharged into the settling tank 10 through the discharge part 39.

At this time, the sludge, floc, etc. having a relatively large load and having large particles are discharged through the discharge part 39 and settle quickly to the bottom surface 111 of the settling tank 10.

On the other hand, the raw water, sludge, floc, etc. discharged through the discharge portion 39 is formed by the rotary distribution plate 57 that rotates in conjunction with the center cage 50, the diffusion layer 5 made of raw water, sludge, floc, etc. is formed. . At this time, the diffusion layer (5) is formed to spread throughout the entire inner diameter area of the settling tank 10, because of this, the sludge and floc is precipitated in the entire inner diameter area of the settling tank (10) corresponds to the volume of the settling tank (10) It is possible to obtain the settling efficiency. In addition, the formation of the diffusion layer 5 also has the effect of preventing sludge and floc from re-emergence above the diffusion layer 5.

Next, the sludge and floc settled from the diffusion layer 5 are precipitated to the bottom surface 111 of the settling tank 10. At this time, the precipitated sludge and floc are collected in the sludge collecting groove 15 by the sludge collecting frame 591 rotating in conjunction with the center cage 50. Here, the lower portion of the sludge collecting frame 591 is provided with a plurality of scrapers 595 in an oblique line so that the sludge and floc deposited on the bottom surface 111 may be sequentially scraped into the sludge collecting groove 15. At this time, the sludge and the floc may be formed in the bottom surface 111 of the settling tank 10 to be inclined and guided to the inclined bottom surface 111 to be collected in the sludge collection groove 15.

Next, the sludge and the floc collected in the sludge collection groove 15 are collected by the sludge collecting frame 593 rotating in conjunction with the center cage 50 and discharged to the sludge discharge port 151. Here, the scraper 595 is provided on both sides or the bottom surface of the sludge collecting frame 593, so that the sludge and the floc located in the front of the sludge collecting groove 15 can be collected.

Thereafter, the sludge and the floc are discharged to the outside through the sludge discharge port (not shown). At this time, the sludge and floc collected in the sludge collecting groove 15 may be discharged to the outside through a separately installed pump or the like.

On the other hand, as the sludge and floc are settled downward in the diffusion layer 5, the supernatant from which the sludge and the floc are separated gradually rises to the upper part of the diffusion layer 5. At this time, when the supernatant is filled, the supernatant is discharged to the outside through the supernatant drainage wear 115 formed inside the settling tank 10.

Therefore, as described above, the sludge settling apparatus 1 according to the present invention will have a system that is circulated so that the sedimentation tank 10 does not overflow while continuously flowing the raw water. At this time, the venturi-type center feed well 30 is provided in the settling tank 10 to increase the sedimentation efficiency of the sludge and floc in the settling tank 10, and the center cage 50 rotated by the drive motor 51. And by the scum skimmer (59) that rotates in conjunction with the center cage 50 will be able to collect and remove the sludge and flocs. In addition, only the supernatant with sludge and floc removed can be effectively taken.

The present invention may be practiced in various forms and is not limited to the above-described embodiment. Accordingly, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

1: sludge settling device 10: sedimentation tank
11 housing 13 raw water pump pipe
15: Sludge collection groove 30: Center feedwell
31: circular slope plate 33: receiving portion
35: slope 37: pressure generating portion
39: discharge part 50: center cage
53: guide roller 55: raw water distribution plate
551: through hole 57: rotation distribution plate
59: scum skimmer 591: sludge collection frame
593: sludge collecting frame 595: scraper

Claims (12)

Sedimentation tank is installed inside the raw water pump pipe into which the raw water flows;
A center feed well installed inside the sedimentation tank and installed to have the raw water pump pipe therein; And
And a center cage provided inside the center feed well and rotatably installed by a driving motor about the raw water pump pipe.
The center cage,
It is detachably provided on the upper outside of the center cage, a plurality of through-holes are formed so that the raw water is distributed to the inside of the center feedwell, the space is blocked between the plurality of through-holes to block the sludge is lowered Raw water distribution plate;
A rotation distribution plate provided outside the center cage and rotatably installed in association with the center cage; And
One side is coupled to the lower outer side of the center cage, it is installed so as to rotate in conjunction with the center cage scum skimmer that can collect the sludge deposited on the bottom surface; sludge settling apparatus further comprises. According to claim 1, wherein the raw water pump pipe,
Sludge settling device characterized in that the raw water discharge port is formed on the upper outer peripheral surface of the raw water pump pipe so that the raw water can pass through the raw water distribution plate provided on the outside of the center cage. The method of claim 1, wherein the settling tank,
Sludge settling device, characterized in that the sludge collecting groove is formed in the lower portion to collect the sludge collected by the scum skimmer. The method of claim 1, wherein the center feed well,
A sludge settling device, characterized in that the upper portion is a cylindrical shape having a width smaller than the inner diameter area of the settling tank, the venturi type formed in a cylindrical shape narrower than the upper width toward the bottom. The method of claim 4, wherein the center feedwell,
Sludge settling device, characterized in that the circular sloping plate inclined downward to the lower portion so as to correspond to the rotation distribution plate extending to the lower portion of the center feed well. The method of claim 5, wherein the center feedwell,
An accommodation part accommodating the raw water passing through the raw water distribution plate;
An inclined surface inclined so that the raw water can be guided to the lower center;
A pressure generating unit for mixing and agglomeration by the pressure generated by passing the raw water; And
Sludge settling apparatus further comprises; the discharge portion for discharging the raw water. The pressure generating unit of claim 6,
Sludge settling device, characterized in that the floc is formed by mixing and flocculation of the sludge contained in the raw water. The method of claim 1, wherein the center cage,
Sludge settling apparatus further comprises a plurality of guide rollers that are guided to the outer surface of the raw water pump pipe inside the center cage to prevent the inclination of the center cage when rotating by the drive motor. According to claim 1, The rotary distribution plate,
Sludge settling device, characterized in that fixed to the outer surface of the center cage, provided to be spaced below the center feed well. The method according to claim 1 or 9, wherein the rotation distribution plate,
Sludge settling device, characterized in that the outer periphery of the rotary distribution plate is formed to be inclined downward. According to claim 1 or 3, wherein the scum skimmer,
Further comprising at least one sludge collecting frame to collect the sludge deposited on the bottom surface of the sedimentation tank to the sludge collecting groove, and at least one sludge collecting frame to collect the sludge collected in the sludge collecting groove. Sludge settling device, characterized in that. The method of claim 11,
The sludge collection frame or the sludge collecting frame further comprises a plurality of scrapers to scrape the sludge together.

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