KR20210078948A - Apparatus for storing sea's sludge - Google Patents

Abstract

The present invention relates to an apparatus for storing disposed ocean sludge, which includes: a tank formed with a space for storing and stirring sludge, and having side walls forming a side wall, a tank cover defining an upper wall of the side walls, and a lower wall portion defining a lower wall of the side wall; an inlet portion provided in an upper region of the tank to introduce a predetermined amount of sludge into the tank; a shaft disposed in the longitudinal direction inside the tank and rotatable in a forward/reverse direction by a predetermined rotational driving unit; at least one blade coupled to the shaft to agitate the sludge introduced into the tank while rotating on the shaft; and a discharge unit for discharging the stirred sludge provided in the lower area of the tank. Accordingly, a large amount of dumped marine sludge harmful to the environment are properly collected and stored, so as to prevent pollution of the marine environment, and properly treat the stored sludge at one time.

Description

Marine dumping sludge storage facility {Apparatus for storing sea's sludge}

The present invention relates to a marine dumping sludge storage facility, and more particularly, it is possible to prevent pollution of the marine environment by appropriately collecting and storing a large amount of marine dumping sludge harmful to the environment, and furthermore, to store the stored sludge at once. It relates to a marine dumping sludge storage facility that can be properly disposed of.

Sludge refers to the sediment generated during sewage treatment or water purification process, and is commonly referred to as sludge. Sludge generated during sewage treatment contains approximately 50% organic matter and is not easy to treat because of its high moisture content.

A brief introduction to known sludge treatment methods is as follows.

Existing sludge is usually treated by dewatering, landfilling, dumping at sea, or incineration.

However, this treatment method not only causes secondary pollution, but also causes a lot of problems and social scandal because it causes a great impact on natural or human life.

Accordingly, in recent years, there has been a lot of interest in recycling rather than marine dumping or incineration. For example, a method of collecting sludge and recycling it as manure has been developed.

That is, when the sludge is considered to be a mixture of fresh sludge and activated sludge, it may be judged that the inorganic and organic substances are partially mixed, and the sludge is stable because decomposition has already been completed. Therefore, this sludge can be used as a fertilizer source for farms after mixing with sawdust or rice husk or mixing with ocher.

In addition, the technology of dewatering, drying, post-treatment of sludge, and then producing bricks is already being operated or being trialled.

In addition, a method of collecting gas generated in the process of concentrating the sludge, burning the sludge, reusing the heat, and producing building materials using the ashes of the incinerated sludge is being developed. This is an example of recycling sludge as a building material.

In any case, in modern society, sludge is recognized as an important problem that should not be left unattended, and a method to properly process and store it is urgently needed above all else.

Nevertheless, considering that the amount of sludge that is still dumped into the sea is infinitely large, it can be seen that in reality, there are insufficient facilities for sludge treatment and storage, and development or research on it is insufficient.

In particular, in recent years, as comprehensive measures for marine dumping management have been prepared that reduce the amount of sludge dumped into the sea and the types of permitted substances to less than half of the current level, it is urgent to find a way to properly process and store the dumped marine sludge. can do.

Accordingly, the present applicant proposes a marine dumping sludge storage facility that can properly collect and store a large amount of dumped marine sludge that is harmful to the environment, thereby preventing pollution of the marine environment, and furthermore, can properly process the stored sludge at once came to do

Myung has been devised to solve the above problems, and an object of the present invention is to properly collect and store a large amount of marine dumping sludge harmful to the environment, thereby preventing pollution of the marine environment, and furthermore, the stored sludge It is to provide a marine dumping sludge storage facility that can be properly disposed of at one time.

The present invention for achieving the above object forms a space in which sludge is stored and stirred, a side wall forming a side wall, a tank cover forming an upper wall of the side wall, and a lower wall of the side wall are formed a tank having a lower wall portion; an inlet provided in an upper region of the tank to introduce a predetermined amount of sludge into the tank; a shaft disposed in the longitudinal direction inside the tank and rotatable in a forward/reverse direction by a predetermined rotation driving unit; at least one blade coupled to the shaft to agitate the sludge introduced into the tank while rotating on the shaft; And it is achieved by providing a marine dumped sludge storage facility comprising a discharge unit for discharging the stirred sludge provided in the lower region of the tank.

Here, the lower wall portion of the tank is formed by pouring concrete in a state in which at least one beam for strength reinforcement is mounted, and the beam for strength reinforcement is inclined so that its inclination gradually increases from the central region toward the side wall. is placed.

The side wall may include: an outer plate forming an outer surface; a stiffener disposed inside the tank to maintain rigidity with the outer plate, but spaced apart from the outer plate; and a plurality of reinforcing ribs arranged at equal intervals from each other in a transverse direction between the outer plate and the stiffener.

A ladder is provided on the outside of the side wall, and a handrail is further installed on the upper surface of the tank cover.

Inclined beams are disposed between the tank cover and the sidewall to be inclined to each other and have both ends fixed to the tank cover and the sidewall, respectively.

At least one manhole part is further installed in the tank cover, and the manhole part includes a body part coupled to the tank cover to form a predetermined manhole, and a cover coupled to the upper part of the body part and opening and closing the manhole by a hinge shaft. includes

An exhaust portion is further formed in the tank cover.

The upper blade positioned at the upper portion of the at least one blade includes: a pair of horizontal bars having an inner end fixed to the shaft and arranged side by side along a horizontal axis in a state in which they are spaced apart from each other; a plurality of vertical bars disposed vertically between the pair of horizontal bars to interconnect the pair of horizontal bars; a first wire having both ends fixed to one of the pair of horizontal bars and the vertical bars and the shaft; and a first elastic member coupled to the first wire.

A lower blade located at a lower portion of the at least one blade may include an inclined bar having an inner end fixed to the shaft; a second wire having both ends fixed to the inclined bar and the shaft, respectively; and a second elastic member coupled to the second wire.

A plurality of reinforcing protrusions for reinforcing the inclined bar are further formed on the inclined bar.

As described above, according to the present invention, it is possible to properly collect and store a large amount of marine dumping sludge harmful to the environment, thereby preventing contamination of the marine environment, and furthermore, the effect of being able to properly process the stored sludge at once have.

1 is a block diagram of a marine dumping sludge storage facility according to the present invention;
2 is a view of the tank cover;
3 is a side view schematically illustrating the operation of a manhole;
Fig. 4 is a plan view of Fig. 1;
5 is an enlarged view of area A of FIG. 1;
6 is an enlarged view of area B of FIG. 1;
7 is an enlarged view of the upper blade area;
7 is an enlarged view of the lower blade area.

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

1 is a block diagram of a marine dumping sludge storage facility according to the present invention, FIG. 2 is a view for a tank cover, FIG. 3 is a side view schematically showing the operation of a manhole, FIG. 4 is a plan view of FIG. 1 is an enlarged view of area A, FIG. 6 is an enlarged view of area B of FIG. 1 , FIG. 7 is an enlarged view of the upper blade area, and FIG. 7 is an enlarged view of the lower blade area.

Referring to these drawings, but mainly referring to FIG. 1, the marine dumping sludge storage facility according to the present invention forms a barrel structure in which various structures are combined at each location.

That is, a tank 10 forming a space 10a in which sludge is stored and stirred, an upper blade 40 provided in a central region inside the tank 10, and an upper blade (40) is provided with a lower blade (50, Bottom Blade) provided in the lower portion.

As previously described, the amount of sludge dumped into the sea is enormous. Therefore, the size of the tank 10 as a facility for processing and storing it is made relatively large.

For example, the height of the tank 10 introduced in this embodiment alone is 13000 mm or more and the diameter is made larger than that. Therefore, it is preferable that the tank 10 is made of a material that is not easily deformed by heat or pressure and can withstand a load of a certain level or more.

The tank 10 has a side wall 11 forming a side wall thereof, a tank cover 15 forming an upper wall, and a lower wall portion 18, Tank Bottom.

Whereas the side wall 11 and the tank cover 15 are manufactured in the form of a plate as a constant reinforcing material, the lower wall portion 18 is not formed in the form of a separate bottom plate. Instead, the lower wall portion 18 replaces the concrete (18a) poured to a certain thickness with a floor plate, but is padded with an additional strength reinforcement beam (18b) for strength reinforcement.

As the beam 18b for strength reinforcement, a normal etch beam (H-Beam) is used. That is, after laying at least six or more etch beams (H-Beam), the concrete 18a is poured. At this time, the strength reinforcement beam (18b) is inclined so that the inclination is gradually increased from the central region toward the side wall 11, which is both regions. Thus, the sludge can be collected in a central area with a low height.

The pouring height of the concrete 18a is desirably designed in consideration of, for example, a pressure of about 0.96 kg/cm 2 acting on the lower wall portion 18 of the tank 10 . If higher strength reinforcement is required, it is preferable to further embed a separate reinforcing bar for strength reinforcement when the concrete 18a is poured.

Concrete 18a is poured to such an extent that it can cover not only the bottom surface of the tank 10 but also a certain part of the side wall 11 .

A diagram for this is shown in FIG. 1 .

The side wall 11 is a part forming the side wall of the tank 10 . If the tank 10 has a cylindrical shape, the side wall 11 may also have a circular arc shape in accordance with this. However, as in the present embodiment, if the tank 10 has an angular shape, the sidewall 11 may be formed using a plate corresponding thereto.

In general, considering that a pressure of about 0.56 kg/cm 2 is applied to the side of the tank 10 , the side wall 11 may be manufactured to about 4 tons. However, in order to ensure stability, in the present embodiment, the sidewall 11 is manufactured to a thickness of 10t.

The side wall 11 includes an outer plate 11a forming an outer surface, and a stiffener 11b disposed inside the tank 10 to maintain rigidity together with the outer plate 11a, but spaced apart from the outer plate 11a. be prepared

A plurality of reinforcing ribs 11c are disposed between the outer plate 11a and the stiffener 11b at equal intervals in the horizontal direction to support the sidewall 11 . The plurality of reinforcing ribs 11c has a role of facilitating construction in addition to the role of reinforcing the strength between the outer plate 11a and the stiffener 11b.

The outer plate 11a, the stiffener 11b, and the reinforcing rib 11c may be bolted together at the corresponding positions, or may be welded.

A ladder 13 is further installed on one side of the side wall 11 . The ladder 13 constitutes a means for the operator to work while climbing to the upper wall of the tank 10 .

Referring to FIG. 2 including FIG. 1 , the tank cover 15 is a part forming the upper wall of the tank 10 .

The tank cover 15 also has a constant thickness like the sidewall 11, and the thickness is maintained at about 10t in consideration of the bending strength with respect to the upper wall of the tank 10.

In addition, in order to reinforce the strength of the tank cover 15 on the lower surface of the tank cover 15, six or more etch beams (H-Beam) are disposed across and both ends are welded at the corresponding positions. Due to the etch beam (H-Beam), the strength of the tank cover 15 can be reinforced, so that it can withstand a constant load.

A handrail 16 is further installed on the upper surface of the tank cover 15 . The handrail 16 serves to promote the safety of the worker who climbed up to the tank cover 15 through the ladder 13 .

An inclined beam 17 is further installed between the tank cover 15 and the side wall 11 to be inclined to each other and both ends are fixed to the tank cover 15 and the side wall 11, respectively.

The inclined beam 17 may also be replaced with an etch beam (H-Beam), etc., where both ends are fixed to the tank cover 15 and the side wall 11, respectively, so that the tank cover 15 and the side wall ( 11) complement each other to maintain strength.

Of course, the warp beam 17 may be excluded depending on the design.

Referring to FIGS. 1 and 3 , a plurality of manhole portions 20 are further installed in the tank cover 15 . The manhole portion 20 is coupled to the tank cover 15, the body portion 21 forming a manhole (20a, Manhole), coupled to the upper portion of the body portion 21, the manhole 20a by the hinge shaft 22 ) consists of a cover 23 that opens and closes.

The cover 23 is manually opened and closed by an operator, and may be opened and closed automatically if necessary. Also, the opening/closing operation of the cover 23 may be replaced by a sliding door type, unlike the illustrated one.

An exhaust part 24 is further formed in the periphery of the manhole part 20 and the tank cover 15 . The exhaust part 24 in the form of a pipe forms a discharge passage for gas or the like generated in the space 10a in the tank 10 .

Accordingly, it is preferable that at least one exhaust unit 24 is provided, and it is advantageous that an air filtering device such as a filter is further installed in the exhaust unit 24 .

Again, referring to FIGS. 1 and 2 , an inlet 25 as a passage through which sludge is introduced into the inner space 10a of the tank 10 is formed on one upper side of the tank 10 , and the lower portion is discharged A portion 27 is formed.

Both the inlet part 25 and the outlet part 27 are in the form of a pipe, and a polyethylene (PE) material double pipe is employed so that a constant strength can be maintained. This has the advantage of being able to use it for a long time as well as being easy to repair and replace.

The inlet portion 25 is divided into a portion 25a through which food waste flows, a portion 25b through which liquid sludge flows, and a portion 25c through which solid sludge flows. Of course, other sludges other than these may be introduced.

On the other hand, the discharge part 27 is a single pipe|tube. At this time, the inner side of the discharge part 27 is disposed almost adjacent to the lower end of the shaft 30, which will be described later, as shown in FIG. 6 . That is, it is disposed adjacent to the discharge passage 19 formed in the bottom region of the tank 10, and the end thereof forms an inclined surface 27a. Therefore, there is an advantage that the sludge can be easily discharged through the discharge unit (27).

On the other hand, the inside of the tank 10 is provided with a shaft 30 traversing the inside of the tank 10 in the longitudinal direction, the upper portion of the shaft 30 is equipped with a rotational driving unit 32 for rotating the shaft 30 . has been

And as shown in FIGS. 1, 4, 7 and 8 , the upper blade 40 and the lower blade 50 are respectively rotatably coupled to the shaft 30 .

The rotation driving part 32 is provided in the area of the through part 15a formed in the central area of the tank cover 15 and is exposed to the outside of the tank cover 15 . The rotation driving unit 32 includes a motor (32a, Cyclo Agitator Motor) for rotating the shaft 30 at the corresponding position.

Accordingly, when the rotation driving unit 32 operates and the shaft 30 rotates, the upper blade 40 and the lower blade 50 coupled to the shaft 30 rotate at the corresponding positions to agitate the sludge.

Referring to FIG. 5 including FIG. 1 , the rotation driving unit 32 includes the above-described motor 32a, a motor housing 32b coupled to the motor 32a, and a shaft coupling in which the upper end of the shaft 30 is coupled. A portion 32c is provided. The motor housing (32b) is supported on the upper surface of the tank cover (15) by a bracket (33) in the shape of a Hangul “c”.

Referring to FIG. 6 including FIG. 1 , the lower end of the shaft 30 rotated by the rotation driving unit 32 is coupled to the base 35 via the discharge passage 19 formed in the lower region of the tank 10 . has been

Of course, between the base 35 and the shaft 30, the shaft 30 is further provided with a rotation coupling portion (30a) that can rotate.

The upper blade 40 is fixed to the shaft 30 in the central region of the tank 10 as shown in FIGS. 1 and 7 . Therefore, when the shaft 30 rotates, the upper blade 40 primarily agitates the introduced sludge while rotating at the corresponding position.

The upper blade 40 has a pair of horizontal bars 41 and a pair of horizontal bars 41 arranged in parallel along a horizontal axis in a state in which the inner end is fixed to the shaft 30 and spaced apart from each other. It has a plurality of vertical bars (42) disposed vertically to connect the pair of horizontal bars (41).

At this time, the installation state may be unstable only when the pair of horizontal bars 41 are fixed to the shaft 30 .

Accordingly, the upper blade 40 has first and second fixing brackets 43a and 43b respectively installed on the upper part of the pair of horizontal bars 41 and the shaft 30, respectively, and the first and second fixing brackets are respectively installed. A first wire 44 is further connected to 43a and 43b to support the upper blade 40 .

A first elastic member 45 for elastically supporting the upper blade 40 is further installed on the first wire 44 .

The lower blade 50 is fixed to the shaft 30 in the lower region within the tank 10 as shown in FIGS. 1 and 8 . Therefore, when the shaft 30 is rotated, the lower blade 50 also rotates at the corresponding position to secondarily stir the introduced sludge.

The lower blade 50 has a structure substantially similar to that of the upper blade 40 . However, while the upper blade 40 forms a substantially rectangular shape when viewed from the lateral direction, the lower blade 50 has a rhombus structure.

The lower blade 50 is inclined substantially the same as the beam 18b for strength reinforcement of the lower wall portion 18 and has an inclined bar 51 having an inner end fixed to the shaft 30, the inclined bar 51 and the shaft A second wire 53 having both ends fixed to the third and fourth fasteners 52a and 52b respectively fixed to 30 is provided.

A plurality of reinforcing protrusions 51a for reinforcing the inclined bar 51 are further formed on the inclined bar 51 . And a second elastic member 54 for elastically supporting the lower blade 50 is further installed in the second wire 53 .

The operation of the marine dumping sludge storage facility having such a configuration is as follows.

First, the sludge is introduced into the tank 10 through the inlet 25 . That is, food waste, liquid sludge, and solid sludge are respectively introduced into the inner space 10a of the tank 10 through 25a, 25b, and 25c as reference parts.

For reference, in order for liquid and solid sludge including food waste to flow through the inlet 25 , a separate pump needs to be further installed in the inlet 25 . However, since the structure and operation of the pump are generally well known, a detailed description thereof will be omitted. If necessary, the known ones are cited.

Next, the rotation driving unit 32 operates. That is, when power is applied to the motor 32a, which is a component of the rotation driving unit 32, and operates, the shaft 30 connected to the shaft of the motor 32a rotates. The rotation of the shaft 30 may be in a forward or reverse direction, or in any direction.

As such, when the shaft 30 rotates, the upper blade 40 and the lower blade 50 coupled to the shaft 30 rotate at the corresponding positions.

Accordingly, the introduced sludge is sequentially stirred by the horizontal and vertical bars 41 and 42 of the upper blade 40 and the inclined bar 51 of the lower blade 50, respectively. During the stirring process, the solid sludge is crushed and then agitated with the liquid sludge so that the sludges are mixed together.

The sludge suitably stirred by the upper blade 40 and the lower blade 50 descends under its own load and goes to the discharge passage 19 formed in the bottom area of the tank 10 .

Then, it can be discharged to a predetermined place via the discharge unit 27 through the inner end of the discharge unit 27 disposed adjacent to the discharge passage (19).

As described above, according to the present invention, it is possible to properly collect and store a large amount of marine dumping sludge harmful to the environment, thereby preventing pollution of the marine environment, and furthermore, it is possible to properly process the stored sludge at once.

In particular, if the marine dumped sludge is properly stored through such a storage facility, there is no doubt that as described above, a method that can be used as a fertilizer for farms or as a construction or civil engineering resource can be suggested.

Although the present invention has been described in detail with reference to the drawings above, the present invention is not limited thereto.

Although the description is omitted in the above embodiment, the capacity or size of the tank 10, and the configuration of each part may be appropriately designed and changed according to the place where the present storage facility is used.

As such, the present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Therefore, it should be said that such modifications or variations belong to the claims of the present invention.

10: Tank 11: Sidewall
13: ladder 15: tank cover
16: handrail 17: inclined beam
18: lower wall 8a: concrete
18b: beam for strength reinforcement 19: exhaust passage
20: manhole part 24: exhaust part
25: inlet 27: outlet
30: shaft 32: rotation driving part
40: upper blade 50: lower blade

Claims (7)

a tank having a side wall forming a side wall, a tank cover forming an upper wall of the side wall, and a lower wall portion forming a lower wall of the side wall to form a space in which sludge is stored;
an inlet provided in an upper region of the tank to introduce a predetermined amount of sludge into the tank;
a shaft disposed in the longitudinal direction inside the tank and rotatable in a forward/reverse direction by a predetermined rotation driving unit;
at least one blade coupled to the shaft to agitate the sludge introduced into the tank while rotating on the shaft; and
Dumping marine sludge storage facility, characterized in that it is provided in the lower region of the tank and comprises a discharge unit for discharging the stirred sludge.
According to claim 1,
The lower wall portion of the tank is formed by pouring concrete in a state in which at least one strength reinforcement beam is mounted, and the strength reinforcement beam is inclined so that the inclination gradually increases from the central region toward the side wall. Marine dumping sludge storage facility, characterized in that there is.
According to claim 1,
The side wall is
an outer plate forming an outer surface;
a stiffener disposed inside the tank to maintain rigidity with the outer plate, but spaced apart from the outer plate; and
Marine dumping sludge storage facility, characterized in that it comprises a plurality of reinforcing ribs arranged at equal intervals to each other along the transverse direction between the outer plate and the stiffener.
4. The method of claim 3,
A ladder is provided on the outside of the sidewall, and a handrail is further installed on the upper surface of the tank cover.
According to claim 1,
At least one manhole part is further installed in the tank cover,
The manhole part includes a body part coupled to the tank cover to form a predetermined manhole, and a cover coupled to the upper part of the body part and opening and closing the manhole by a hinge shaft, wherein the tank cover is further formed with an exhaust part Marine dumped sludge storage facility, characterized in that.
According to claim 1,
An upper blade located at an upper portion of the at least one blade,
A pair of horizontal bars arranged side by side along the horizontal axis in a state in which the inner end is fixed to the shaft and spaced apart from each other;
a plurality of vertical bars disposed vertically between the pair of horizontal bars to interconnect the pair of horizontal bars;
a first wire having both ends fixed to one of the pair of horizontal bars and the vertical bars and the shaft; And Marine dumping sludge storage facility comprising a first elastic member coupled to the first wire.
According to claim 1,
A lower blade located at a lower portion of the at least one blade,
an inclined bar having an inner end fixed to the shaft;
a second wire having both ends fixed to the inclined bar and the shaft, respectively; and
It includes a second elastic member coupled to the second wire,
The marine dumping sludge storage facility, characterized in that the inclined bar is further formed with a plurality of reinforcing projections for reinforcing the inclined bar.

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