KR101806815B1 - Sludge collector having 3way valve for selective suction - Google Patents

Abstract

The present invention relates to a sludge collector. The present invention includes: a plurality of cone-shaped sludge collection blocks connected in a settling pond opposite each other to collect sludge accumulated in the settling pond; a plurality of sludge manifolds placed between the sludge collection blocks to be connected to the sludge collection blocks, and absorbing the sludge collected by the sludge collection blocks; front and rear branch pipes connected in front and rear end areas of the settling pond with each of the sludge manifolds, and transferring the sludge absorbed by the sludge manifolds; a first main transfer pipe having both ends connected with each of the front and rear branch pipes, and transferring the sludge on the front and rear branch pipes; a second main transfer pipe connected with the first main transfer pipe; and a first three-way valve placed in a crossing spot of the first and second main transfer pipes, and selectively opening or closing a passage for the second main transfer pipe and at least one among the front and rear branch pipes.

Description

[0001] The present invention relates to a sludge collector having a three-way valve capable of selective suction,

The present invention relates to a sludge collector, and more particularly, to a sludge collecting apparatus that can be used for a sludge collecting apparatus, a sludge collecting apparatus, and a sludge collecting apparatus. More particularly, The present invention relates to a sludge collector having a three-way valve capable of selectively sucking the sludge.

FIG. 1 is a process diagram of a general sewage treatment plant, in which sewage is purified while forming a flow through inflows, initial settling basins, bioreactors, final settling basins, and outlets.

Settling bases, particularly long-term settling bases, which are essentially used in such sewage treatment plants (or water treatment plants) are very important processes for performing solid-liquid separation.

The first settling basin, which is the first settling basin, removes the solids present in the wastewater through gravity, thereby reducing the load on the bioreactor that decomposes the sewage into microorganisms, and then discharging the sewage to the final settling basin to settle the sludge by gravity So that the process can be carried out.

The second settling basin, which is the final settling basin, separates the effluent of the second treatment process into treated water and sludge, and the supernatant is discharged through filtration or disinfection process for the discharge, and the sludge is returned to the bioreactor, And it is one of the most important processes in the water treatment process because it plays a role of ensuring the final quality of the treated water.

The settling paper serves to remove sedimentable solids through gravity, and the precipitated solids accumulate on the bottom of the sedimentation basin.

At this time, the sludge which is a precipitated solid material plays a very important role in the sewage treatment process. That is, in the state where the sludge does not rot as an organic material and the activity is high, the sludge is conveyed to the bioreactor and the concentrated sludge, The sludge should be returned or discharged in a manner suited to the sewage treatment process.

If the precipitated sludge is not removed, the sludge interface becomes high, so that the sludge can be re-floated in accordance with the flow of water to deteriorate the quality of the treated water. Further, supply of microorganisms to the reaction tank, which is a downstream process, .

In order to solve such a problem, the present applicant filed a sludge collector having a sludge collecting block with the Korean Intellectual Property Office (KIPO), and was registered as Korean Intellectual Property Office Registration No. 10-1383064 (prior art 1).

However, in the case of the sludge collector according to the prior art as in the prior art 1, in the long sedimentation basin, a lot of leaks may be generated in the connection process of the continuous sludge withdrawing unit pipe unit, The pressure loss of the sludge may cause the sludge settled in the modular square collection block not to be drawn.

Generally, in water treatment processes, such as sewage treatment plants, wastewater treatment plants, and water treatment plants, the width of the sedimentation basin ranges from 15m to 4m and the length varies from 7m to 60m. It is known that problems that can not be smoothly occur may occur.

As a result, considering that the length of the sedimentation tank is long and the sedimentation state of the sludge at the front end and the rear end is uneven or the sludge treatment of the hopper part is not smooth in the sedimentation tank with the hopper, the sludge may be anaerobically floated , It is necessary to supplement the structure to solve these problems.

Prior Art 1; Korean Intellectual Property Office Registration No. 10-1383064

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sludge collector capable of collecting precipitate sludge easily even when the sludge settling state in the front end portion and the rear end portion of the settling basin is not uniform, .

The object is achieved by a method of treating a sludge collecting block comprising: a plurality of cone type sludge collecting blocks adjacently connected in the settling column so that sludge accumulated in the settling basin is collected therein; A plurality of sludge manifolds disposed between the cone type sludge collection blocks and in communication with neighboring cone type sludge collection blocks for sucking sludge collected in the neighboring cone type sludge collection blocks; A front end branch pipe and a rear end branch pipe connected to the plurality of sludge manifolds individually in the front end portion and the rear end portion of the settler, respectively, for transferring the sludge sucked in the plurality of sludge manifolds; A first main transfer pipe connected to the front end branch pipe and the rear end branch pipe at both ends, respectively, for transferring the sludge on the front end branch pipe and the rear end branch pipe; A second main transfer pipe connected to the first main transfer pipe; And a first three-way valve provided at an intersection of the first and second main conveyance pipes for selectively opening and closing the flow path of at least one of the front end branch pipe and the rear end branch pipe and the second main conveyance pipe, The sludge collector according to claim 1,

And a first valve driving unit connected to the first three-way valve and driving the first three-way valve.

A hopper sludge suction transfer pipe for sucking and transporting the sludge settled in the hopper; An outer sludge conveying pipe connected to a sludge drawing pump provided at one end of the settling basin and conveying the sludge provided at the second main conveying pipe and the sludge suction conveying pipe for hopper to the outside of the settling basin; And at least one of the second main transfer pipe, the hopper sludge suction transfer pipe and the sludge external transfer pipe, and at least one of the second main transfer pipe and the hopper sludge suction transfer pipe, and the sludge external transfer pipe And a second three-way valve for selectively opening and closing the flow path.

And a second valve driver connected to the second three-way valve to drive the second three-way valve.

And an air vent pipe connected to the second main conveyance pipe and the hopper sludge suction conveyance pipe for discharging air in the second main conveyance pipe and the sludge suction conveyance pipe for the hopper.

The plurality of cone type sludge collection blocks and one or more of the sludge manifolds may be fabricated in units of modules.

According to the present invention, the sedimentation sludge can be easily collected even if the length of the sedimentation tank is long and the sedimentation state of the sludge at the front end portion and the rear end portion is uneven or the sludge treatment of the hopper portion is not smooth in the sedimentation tank with the hopper.

FIG. 1 is a process chart of a general sewage treatment plant, FIG.
FIG. 2 is a partially cutaway perspective view of a sludge collector according to an embodiment of the present invention; FIG.
Fig. 3 is a side view of Fig. 2,
Fig. 4 is an enlarged view of the area A in Fig. 3,
FIG. 5 is a perspective view of the cone type sludge collecting blocks and the sludge manifold in a modularized state,
6 is an enlarged perspective view of the sludge manifold,
7 is a front view of the sludge manifold,
8 is a sectional view taken along the line BB in Fig. 7,
9 to 11 are views showing a plurality of modes according to the operation of the first three-way valve,
12 to 14 are views showing a plurality of modes according to the operation of the second three-way valve, respectively.

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

2 is a perspective view of a sludge collector according to an embodiment of the present invention, Fig. 3 is a side view of Fig. 2, Fig. 4 is an enlarged view of region A of Fig. 6 is a magnified perspective view of the sludge manifold, Fig. 7 is a front view of the sludge manifold, Fig. 8 is a sectional view taken along line BB of Fig. 7, Figs. 9 to 11 FIGS. 12 to 14 are views showing a plurality of modes according to the operation of the second three-way valve, respectively.

Referring to these drawings, the sludge collector according to the present embodiment has a structure in which the settling state of the sludge in the front end portion and the rear end portion is long due to the long length of the settling basin 1 or in the settling basin 1 in which the hopper 2 exists, Type sludge collecting block 110, a sludge manifold 120, a front end branch pipe 135 and a rear end branch pipe (not shown) 136, a first main transfer pipe 141, a second main transfer pipe 142, and a first three-way valve 150.

A plurality of cone type sludge collecting blocks 110 are adjacently arranged in the settling basin 1 so that sludge accumulated in the settling basin 1 is collected therein.

The settling paper 1 may be a primary settling paper or a secondary settling paper described with reference to FIG. 1 in which a cone type sludge collecting block 110, a plurality of sludge manifolds 120, and first and second The sludge is collected and removed by the main transfer pipes 141 and 142 so that the sludge in the settling basin 1 can be removed more simply and efficiently than the conventional chain flight type sludge collector and the conventional sludge collector. Therefore, it is possible to solve the problem that the time and manpower required for the maintenance are large during operation.

First, the cone type sludge collecting block 110 is connected in a lateral direction in the sedimentation tank 1 so that sludge accumulated in the sedimentation tank 1 is collected therein as a rectangular block structure. The cone type sludge collecting blocks 110 are laterally arranged in the lower region in the settling basin 1 in order to remove the sludge after sedimentation by gravity occurs in the settling basin 1.

Since the technique of removing the sludge after sedimentation by gravity occurs in the sedimentation paper 1 as described above, it is possible to escape from the method using the conventional scraper.

In manufacturing the cone type sludge collecting block 110, a polygonal shape other than a rectangular shape may be considered.

However, it is preferable that the cone type sludge collecting block 110 is a rectangular block structure as shown in the drawing, considering that the cone type sludge collecting blocks 110 must be connected laterally.

The cone-type sludge collecting block 110 includes a block body 111 having a collection space formed therein for collecting sludge accumulated in the sedimentation material 1 and having a plurality of communication holes 112 formed on the side thereof, A first sludge drop hole (not shown) formed in the upper portion of the block body 111 and communicating with the collecting space in the block body 111 at a central portion thereof is formed concave so as to collect sludge into a collecting space in the block body 111 Type concave portion 113 in which the first and second cone-shaped concave portions 114 and 114 are formed.

5, the communication holes 112 are formed on only one side of the block body 111, but the communication holes 112 may be formed on both sides of the block body 111. [

The sludge manifold 120 includes a block body 111 connected to the sludge manifold 120 and a connector 130 connected to the connector 130 of the sludge manifold 120 in place of the communication hole 112. [ A connection portion 115 is formed.

As the cone type sludge collecting blocks 110 are connected to each other, the sludge accumulated in the collection space in the block body 111 may be collected toward the sludge manifolds 120 and discharged through the main conveyance pipe 140.

The first cone type recess 113 has a shape inclined downward toward the center first sludge drop hole 114 so that the sludge falling down toward the first cone type recess 113 is descended along this inclined surface, Can be collected into the collecting space in the block body 111 through the sludge drop hole 114.

In the present embodiment, the first cone type concave portion 113 takes the shape of a quadrangular pyramid of a concave shape, but may be applied to a shape of a concave cone or the like including a concave triangular pyramid. Therefore, the scope of the present invention can not be limited to the shape of the drawings.

Next, a plurality of sludge manifolds 120 are disposed between the cone-type sludge collection blocks 110 to communicate with neighboring cone-type sludge collection blocks 110, And the sludge is collected from the sludge.

At this time, the sludge manifold 120 may have a polygonal shape. As the sludge manifold 120 has a polygonal shape, when the sludge is collected and transported to the sludge manifold 120, accumulation of sludge on the sludge manifold 120 can be prevented.

Type sludge collecting block 110. A connector 130 is connected to both sides of the sludge manifold 120 for connection with a connector connecting part 115 formed in a neighboring cone type sludge collecting block 110. [ The connector 130 may protrude outward from both sides of the sludge manifold 120.

The connector 130 is provided with a seal 131 for sealing the connection portion. The sludge manifold 120 may be provided with a curved surface guide 132 which doubles the flow of the fluid.

Although not necessarily so, in the case of this embodiment, a plurality of cone type sludge collection blocks 110 and one or more sludge manifolds 120 may be fabricated on a module basis. 5, for example, the sludge manifold 120 may be long and the five lines of cone-type sludge collecting blocks 110 may be connected to the two sides of the sludge manifold 120 in a module unit.

When the cone-type sludge collecting blocks 110 and the sludge manifold 120 are manufactured in units of modules, since the module units are laid on the bottom of the settler 1 as they are, the construction work becomes very convenient .

In addition, since the cone type sludge collecting blocks 110 are disposed on both sides after the sludge manifold 120 is disposed at the center and are modularized, leakage and pressure loss can be prevented from occurring as in the past, And to facilitate discharge.

For reference, the modulization method shown in FIG. 5 is only an example, and it is not necessarily required to be modularized in the structure and the number as shown in FIG. That is, if the sludge can be withdrawn more efficiently by reducing the pressure loss, it may be modularized into various types different from the drawing.

Next, the front end branch pipe 135 and the rear end branch pipe 136 are individually connected to the plurality of sludge manifolds 120 in the front end and rear end regions of the settling basin 1, respectively, And serves to transfer the sludge sucked from the manifold 120.

Although two sludge manifolds 120 are provided in the front end portion and the rear end portion of the clarifier 1 in the embodiment of the present invention, the front end branch pipe 135 and the rear end branch pipe 136 are connected to the two sludge manifolds 120 to send the sludge passing through the sludge manifold 120 to the first main transfer pipe 141.

Of course, the number and size of the front end branch pipe 135 and the rear end branch pipe 136 may be different from those of the drawings, and therefore the scope of the present invention can not be limited to the shapes of the drawings.

The first main transfer pipe 141 is connected at its both ends to the front end branch pipe 135 and the rear end branch pipe 136 and is connected to the front end branch pipe 135 and the rear end branch pipe 136 It is a pipe that transports sludge. The sludge in the front end branch pipe 135 and the rear end branch pipe 136 is primarily directed to the first main transfer pipe 141.

The second main transfer pipe 142 is a pipe connected to the first main transfer pipe 141. A sludge external transfer pipe (162) is connected to the second main transfer pipe (142).

The sludge collected in the sludge manifolds 120 passes through the front end branch pipe 135 and the rear end branch pipe 136, the first main conveyance pipe 141 and the second main conveyance pipe 142, And can be drawn out to the outside through the external transfer pipe 162.

On the other hand, the first three-way valve 150 is provided at the intersection of the first and second main transfer pipes 142, as shown in Figs. 2 and 3, and Figs. 9 to 11, And selectively opens and closes the flow path of at least one of the branch pipe 135 and the rear end branch pipe 136 and the second main transfer pipe 142.

The first valve driving part 151 may be provided in the settling tank 1 for the operation of the first three-way valve 150. [ The first valve driving unit 151 may be a mechanical type that operates the first three-way valve 150 while rotating the handle, or may be an electronic control method. In the case of the electronic control system, there is an advantage that the remote control can be performed. This is also the case with the second three-way valve 170.

On the other hand, if the length of the sedimentation cell 1 is long and the sedimentation state of the sludge at the front end portion and the rear end portion is uneven, as described above, the sludge may be anaerobically floated. In other words, when the length of the settling basin 1 is long, the sedimentation of the sludge may not be uniform at the front end portion and the rear end portion.

For example, when a large amount of settling occurs in the front end portion of the settling paper 1, it is necessary to concentrate the suction of the sludge in the front end region of the settling paper 1, and in the case where a large amount of settling occurs in the rear end portion of the settling paper 1, 1), the sludge must be sucked together at the front end and the rear end when the sediment is uniformly formed at the front end and the rear end. For this, the operation of the first three-way valve 150 is required.

The first three-way valve 150 may include a first three-way valve body 150a and a first valve flip 150b provided in the first three-way valve body 150a. Since the shape of the first three-way valve 150 shown in the drawing is only one example, it may be replaced by a valve having a different structure and structure.

In this embodiment, the first three-way valve 150 has four control modes, namely, a total of four modes, namely, a front end suction mode, a rear end suction mode, a neutral mode, and a proportional control mode, depending on the operation of the first valve flip 150b. Can be implemented.

For example, in the case of FIG. 9, the sedimentation occurs at the front end portion of the sedimentation paper 1, and corresponds to the front end suctioning mode in which the sludge suction in the front end region of the sedimentation paper 1 is concentrated. 1), which corresponds to the rear end suction mode in which the suction of the sludge in the rear end region of the settler 1 is concentrated. In the case of FIG. 11, Mode. Although the proportional control mode is not shown in the drawing, the proportional control mode may be applied to the case where the first valve flip 150b is operated so that the suction amount of either the front end portion or the rear end portion is relatively larger.

For example, if a sludge drawing pump has 400 modules / hr of modules and 10 modules of each settling basin, each module will have a suction amount of 40m3 / hr, ie 6.6m3 / min per minute. In this case, four control modes, ie, the front end suction mode, the rear end suction mode, the neutral mode, and the proportional control mode can be selected and used in this case because the amount of generated sludge varies according to the treatment process of the sewage treatment plant.

On the other hand, when the hopper 2 is applied as in the present embodiment, the sludge accumulated in the hopper 2 must also be treated.

However, since the amount of sludge collected in the hopper 2 is extremely small due to its structure, continuous treatment is not required. Therefore, only when the amount of the sludge collected in the hopper 2 is large, the treatment can be performed. For this purpose, the perchloric sludge suction transfer pipe 161, the sludge external transfer pipe 162, and the second three-way valve 170 are provided.

The hopper sludge suction transfer pipe 161 is a pipe for sucking and transferring the sludge settled in the hopper 2.

The sludge external transfer pipe 162 is connected at one end to a sludge drawing pump provided at the outside of the sedimentation bed 1 and is connected to the sludge discharging pipe 161 through the second main transfer pipe 142 and the hopper sludge suction / (1).

The second three-way valve 170 is connected to the second main transfer pipe 142, the hopper sludge suction transfer pipe 161 and the sludge external transfer pipe 162 and is connected to the second main transfer pipe 142 and the hopper And selectively opens and closes the flow path of at least one of the sludge suction transfer pipe (161) and the sludge external transfer pipe (162).

The second three-way valve 170 includes a second three-way valve body 170a as well as the first three-way valve 150 and a second three-way valve body 170b provided in the second three-way valve body 170a, 2 valve flip 170b. The second valve driver 171 may be a mechanical type that operates the first three-way valve 150 while rotating the handle, or may be an electronic control method. Since the shape of the second three-way valve 170 shown in the figure is only an example, it may be replaced with a valve having a different manner and structure.

The second main transfer pipe 142 and the hopper sludge suction transfer pipe 161 in which the second three-way valve 170 is located are connected to the second main transfer pipe 142 and the air in the hopper sludge suction transfer pipe 161 an air vent pipe 180 for exhausting air is connected.

As shown in FIGS. 12 to 14, the second three-way valve 170 is capable of implementing three modes in total according to the operation of the second valve flip 170b.

The first mode by the second three-way valve 170 is connected to the front end branch pipe 135 and the rear end branch pipe 140 via the cone type sludge collecting block 110 and the sludge manifold 120, The sludge can be directed to the sludge external transfer pipe 162 by opening the flow path of the pipe to be transferred to the first and second main transfer pipes 141 and 142 through the sludge discharge pipe 136. At this time, the air vent pipe 180 may be closed. Considering that the settling of the sludge is not so much in the hopper 2, the first mode can be used most often.

The second mode by the second three-way valve 170 is a mode in which the sludge conveyed from the second main conveyance pipe 142 side and the sludge suction conveyance pipe 161 side of the hopper 2, So that the sludge can be directed to the sludge external transfer pipe 162. At this time, the air vent pipe 180 may be opened.

14, the third mode by the second three-way valve 170 opens the flow path of the sludge conveyed from the sludge suction transfer pipe 161 side of the hopper 2 of the hopper 2, So that the sludge can be directed to the sludge outlet (162). At this time, the air vent pipe 180 may be closed.

According to the present embodiment having the structure and function as described above, when the settling state of the sludge in the front end portion and the rear end portion is long due to the long length of the settling basin 1 or the settling basin 1 in which the hopper 2 exists, The sedimentation sludge can be easily collected even when the sludge treatment of the portion is not smooth.

15 is a view showing another embodiment of the present invention. The first main transfer pipe 141 of the embodiment described above is connected at its both ends to the front end branch pipe 135 and the rear end branch pipe 136 so that the front end branch pipe 135 and the front end branch pipe 135 are connected to each other, The diameter of the pipe for transferring the sludge on the rear end branch pipe 136 may be large. When the first main transfer pipe 141 and the second main transfer pipe 142 are formed to have a large diameter, the sediment is piled up on the transfer pipes and floated so that the upper water becomes turbid.

In order to prevent this, in the present embodiment, the sludge manifold 120 is configured to suck in one direction, and is installed continuously to the wall of one side of the settling basin to move the positions of the feeding pipes disposed in the center of the settling basin, The sludge can be prevented from being injured. The above-described first three-way valve 150 is also coupled to the sludge collector thus formed.

Although not shown in the drawings, it is possible to prevent the sedimentation of the sludge on the conveyance pipes by preventing the sedimentation preventing members, which are formed in the longitudinal direction, from joining the conveyance pipes.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, such modifications or variations are intended to fall within the scope of the appended claims.

1: settling paper 2: hopper
110: cone type sludge collecting block 111: block body
112: communication hole 113: first cone type recess
114: first sludge drop hole 115: connector connection part
116: Connector for collecting block 120: Sludge manifold
130: Connector 131: Seal
132: Curved guide 135: Front end branch pipe
136: rear end branch pipe 141: first main transfer pipe
142: second main transfer pipe 150: first three-way valve
151: first valve driving part 161: hopper sludge suction conveying pipe
162: sludge external feed pipe 170: second three-way valve
171: second valve driver 180: air vent tube

Claims (8)

A plurality of cone type sludge collection blocks disposed adjacent to each other in the settler so that sludge accumulated in the settler is collected inside;
A plurality of sludge manifolds disposed between the cone type sludge collection blocks and in communication with neighboring cone type sludge collection blocks for sucking sludge collected in the neighboring cone type sludge collection blocks;
A front end branch pipe and a rear end branch pipe connected to the plurality of sludge manifolds individually in the front end portion and the rear end portion of the settler, respectively, for transferring the sludge sucked in the plurality of sludge manifolds;
A first main transfer pipe connected to the front end branch pipe and the rear end branch pipe at both ends, respectively, for transferring the sludge on the front end branch pipe and the rear end branch pipe;
A second main transfer pipe connected to the first main transfer pipe;
A first three-way valve provided at an intersection of the first and second main conveyance pipes for selectively opening and closing a flow path of at least one of the front end branch pipe and the rear end branch pipe and the second main conveyance pipe;
A hopper sludge suction transfer pipe for sucking and transporting the sludge settled in the hopper;
An outer sludge conveying pipe connected to a sludge drawing pump provided at one end of the settling basin and conveying the sludge provided at the second main conveying pipe and the sludge suction conveying pipe for hopper to the outside of the settling basin; And
The sludge suction pipe is connected to the second main transfer pipe, the hopper sludge suction transfer pipe and the sludge external transfer pipe, and at least one of the second main transfer pipe and the hopper sludge suction transfer pipe, And a second three-way valve for selectively opening and closing the sludge collector.
The method according to claim 1,
Further comprising a first valve driving unit connected to the first three-way valve to drive the first three-way valve.
delete The method according to claim 1,
Further comprising a second valve driving unit connected to the second three-way valve to drive the second three-way valve.
The method according to claim 1,
And an air vent pipe connected to the second main conveyance pipe and the hopper sludge suction conveyance pipe for discharging air in the second main conveyance pipe and the sludge suction conveyance pipe for the hopper Sludge collector.
The method according to claim 1,
Wherein the plurality of cone type sludge collection blocks and one or more of the sludge manifolds are fabricated in a module unit.
The method according to claim 1,
The sludge manifolds are installed in close contact with sidewall sidewalls so that the first and second main transfer pipes are closely attached to the sidewall sidewalls so that a large amount of sludge Thereby preventing sedimentation of the sludge.
The method according to claim 1,
Wherein the first and second main conveyance pipes are coupled to a sack-shaped sedimentation preventing member formed to be long in the longitudinal direction.

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