KR101028035B1 - System of sewage treatment plant - Google Patents

Abstract

PURPOSE: A sewage treatment system is provided to return scum discharged from a circular settling basin to a pre-treatment facility, and to prevent the scum generated from the circular settling basin to be discharged to river. CONSTITUTION: A sewage treatment system comprises the following: a scum skimmer combined with a scraper rotator of a sludge discharger; a scum box with an opened upper side, including an outlet hole on the bottom for discharging scum collected by the scum skimmer; and a scum box speed reducer rotating the scum box by being installed on the side of a circular settling basin. The scum box includes one end forming a bent unit(110a) with a gradient to induce the insertion of the scum from the center of the circular settling basin to the inside of the scum box.

Description

Sewage Treatment System {SYSTEM OF SEWAGE TREATMENT PLANT}

The present invention relates to a sewage terminal treatment system, and more particularly, to prevent scum discharged from a circular sedimentation basin to a pretreatment facility to prevent discharge into the stream, and to minimize the generation of moss in the drainage and to facilitate the cleaning. A sewage terminal treatment system.

In general, when looking at the circular sedimentation system installed and operated in sewage and wastewater treatment facilities, the treated water is finally discharged through the concrete drainage channel beyond V-Weir. In this case, the remaining organic matter is attached to the drainage channel of concrete material, so that large amount of moss is generated, which is not good for appearance, and the generated moss is removed through periodic cleaning. It flows into.

The discharge of rivers such as moss not only has a great influence on the total phosphorus treatment project, which is currently a national project, but also causes pollution in the future. In order to block such pollutants in advance, it is urgently needed to minimize the occurrence of moss, which is a problem in existing facilities, to prevent the inflow of moss in the effluent.

In the total phosphorus treatment business, eutrophication can be caused by total phosphorus (TP) when water increased due to dredging of the four rivers, so that the total phosphorus (TP) discharged into the river is blocked in advance to reduce pollution by preventing eutrophication. Says business.

In the conventional treatment plant, most of the nitrogen and phosphorus, which is the cause of moss, are treated in low concentrations, but many mosses are still generated in waterways due to the lack of technology of structures or facilities, and most of the sludge from the bioreactor is precipitated in the sedimentation basin. Some small fin flocs (scum) will go out to the effluent. The scum in the effluent differs due to differences in sedimentation characteristics according to various conditions (temperature, sludge characteristics, microbial ecology, residence time, etc.).

The sludge is not 100% sedimented in the sedimentation basin, and it is also settled and injured by some specific situation. The small sludges (scums) enter the waterway and adhere to some parts of the sewer. It is no exaggeration to say that moss (green algae) that occurs in waterways is mostly caused by scum that has been transferred to V-Wear attached to a porous concrete waterway and has grown over time.

This is the reason why the construction of the plant was done before the problem of moss occurred seriously, but there is a great need for the technical countermeasures for this part even in the design conditions.

The problem to be solved by the present invention is to provide a sewage terminal treatment system that can prevent the scum generated in the circular sedimentation basin discharge to the river.

Another object of the present invention is to provide a sewage terminal treatment system that can prevent or significantly reduce the occurrence of moss in the drain.

Sewage terminal treatment system according to an embodiment of the present invention, in the sewage terminal treatment system of the circular sedimentation basin with a sludge discharge device provided with a rotating scraper rotating body in the center, the scum skimmer is connected to the rotating rotary scraper ; A scum box installed between the sludge discharge device and the side wall of the circular sedimentation basin, the upper surface of which is opened and an outlet hole is formed on the bottom surface of the sludge discharge device to discharge the scum collected by the scum skimmer; And a scum box reducer installed on the sidewall of the circular sedimentation basin to rotate the scum box, thereby collecting and discharging the scum generated in the circular sedimentation basin.

A limit switch is installed on the side wall of the circular sedimentation basin, and the limit switch operates the scum box reducer when the scum skimmer enters the upper side of the scum box, thereby rotating the scum box inclined to one side and rotating the scum box to the other side. The scum collected by the skimmer is discharged to the outlet hole, and when the scum skimmer leaves the upper side of the scum box, the scum box reducer is operated to rotate the scum box to one side so that sediment water does not flow out to the outlet hole. Characterized in that.

The scum box is characterized in that made of stainless steel.

The scum box is characterized in that the longitudinal section of the semicircle.

The scum box is characterized in that the bent portion having an inclination at the end in the longitudinal direction is formed while the end forms an inclination along the length.

The scum box and the scum box reducer is characterized in that the gear is connected.

One end of the flexible pipe is connected to the lower side of the outflow hole, and the other end of the flexible pipe is connected to one end of the scum discharge pipe formed on the side wall of the circular sedimentation basin.

The bottom of the scum box is characterized in that the inclined hole is formed to form a lower side.

In the sewage terminal treatment system according to an embodiment of the present invention, in the sewage terminal treatment system of the circular sedimentation basin formed with a drainage passage providing the flow path of the overflowed water around the outer circumference, is installed to cover the upper side of the drainage passage, Lining is formed from the one side of the installation height is lower toward the other side to guide the overflow water to the other side; And a discharge part communicating with the other side of the lining to discharge the overflowed water, so that the flow rate increases from one side of the lining to the other side.

The upper side along the side wall of the circular settling battery is characterized in that the upper portion of the v-ware made of a serrated plate body is further installed to stand up.

A support is provided above the drainage passage, and the lining is supported by the support.

The lining is made of stainless steel, characterized in that the inclination is formed in the outer or inner circumferential direction.

The sewage terminal treatment system according to an embodiment of the present invention, in the sewage terminal treatment system is installed in a circular sedimentation basin is provided with a sewage from the pretreatment facility, the drainage is formed on the outer circumference, the communication is connected to the outer peripheral side of the drainage A discharge part for discharging the overflow water; And one side of which an upper portion is opened at a portion into which the overflow water flows into the discharge portion from the drainage passage, and the other side includes a scum recovery portion connected to the pretreatment facility, and collects scum included in the overflow water to the pretreatment facility. It is characterized by recovering.

The scum recovery part is provided with a valve for opening and closing between one side and the other side, the valve is formed on the top of the valve handle for manipulating the valve, the scum recovery part is opened when cleaning or collecting foreign matters, and closed when the overflow water discharge It features.

A guide plate connected to the drainage channel may be formed at one side of an upper portion of the scum recovery unit.

The discharge part and the scum recovery part are made of stainless steel.

According to the sewage terminal treatment system according to the present invention as described above, by collecting the scum generated from the circular sedimentation basin to be recovered to the pretreatment facility, there is an effect of improving the water environment through the prevention of unauthorized discharge of scum.

And the sewage terminal treatment system according to an embodiment of the present invention by installing a stainless steel lining having a slope in the drainage, to minimize the occurrence of moss in the drainage and to make it easy to clean the beauty of the sewage treatment facility, cleaning It is effective in reducing manpower consumption.

1 is a plan view schematically showing the structure of the sewage terminal treatment system according to an embodiment of the present invention,
Figure 2 is a cross-sectional view schematically showing the structure of the sewage terminal treatment system according to an embodiment of the present invention,
3 is a schematic view showing an enlarged scum box in FIG.
4A is a cross-sectional view taken along the “A” direction by cutting the scum box in FIG. 3;
4B is a cross-sectional view taken along the “B” direction by cutting the scum box in FIG. 3;
FIG. 5A is an enlarged cross-sectional view of a drainage path of an “X” portion in FIG. 1;
FIG. 5B is an enlarged cross-sectional view of a drainage path of a portion “Y” in FIG. 1;
5C is an enlarged cross-sectional view of a drainage path of a portion “Z” in FIG. 1;
Figure 6a is a cross-sectional view schematically showing the inside by expanding the discharge portion and scum recovery portion in the sewage terminal treatment system according to an embodiment of the present invention,
Figure 6b is a cross-sectional view schematically showing the inside in a plan to enlarge the discharge portion and scum recovery in the sewage terminal treatment system according to an embodiment of the present invention,
7 is a sectional view schematically showing only a part of the scum recovery unit in the sewage terminal treatment system according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited or limited by the embodiments. Like reference numerals in the drawings denote like elements.

1 is a plan view schematically showing the structure of the sewage terminal treatment system according to an embodiment of the present invention, Figure 2 is a cross-sectional view schematically showing the structure of the sewage terminal treatment system according to an embodiment of the present invention.

1 and 2, the sewage terminal treatment system according to an embodiment of the present invention is to be installed in the circular sedimentation basin (1).

The circular sedimentation basin 1 is provided with a sludge discharge device in the center, in general, the sludge discharge device may be configured as follows.

First, it is preferable to have a center column (3) formed to have a length perpendicular to the floor to serve as a pillar.

It is preferable that the speed reducer 2 generating power is installed at the top of the center column 3.

And a scraper rotating shaft 4 which is installed in the reducer 2 to rotate around the center column 3 may be included.

It is preferable that the center feed well 9 is installed at the upper portion of the scraper rotation shaft 4 without being rotated together with the scraper rotation shaft 4.

The center feed well 9 is introduced into the sludge inlet pipe 8 introduced from the outside to temporarily store the sludge sludge inside, it is preferable to discharge the sludge after stabilizing the stored sludge.

On the other hand, the lower portion of the scraper rotary shaft 4, the scraper 5 is installed to rotate together with the scraper rotary shaft 4 can collect the sludge precipitated in the circular sedimentation basin (1).

In this case, it is preferable that a hopper 6 is formed at the lower portion of the circular sedimentation basin 1 to finally store the sludge deposited in the circular sedimentation basin 1 collected by the scraper 5. In addition, the center column 3 is preferably located at the center of the hopper 6 so as to easily store the sludge in which the hopper 6 is deposited.

In addition, in order to discharge the sludge stored in the hopper 6 to the outside, the hopper 6 may be formed so that the discharge pipe (not shown) in communication with one side lower.

The discharge pipe (not shown) may discharge the sludge stored in the hopper 6 to another circular sedimentation basin or to discharge to the dehydration facility.

In addition, it is preferable that the discharge induction part 10 is installed at the lower portion of the scraper rotary shaft 4 to be rotated together with the scraper rotary shaft 4 to help discharge the sludge.

Sewage terminal treatment system according to an embodiment of the present invention is installed to rotate between the scum skimmer 7 and the sludge discharge device and the side wall of the circular sedimentation basin (1) connected to the scraper rotating body (4) to rotate The upper surface is opened and the outlet hole 111 is formed in the bottom surface to form a scum box 110 for discharging the scum collected by the scum skimmer 7. And it is installed on the side wall of the circular sedimentation basin 1 includes a scum box reducer 130 for rotating the scum box 110.

The scum skimmer 7 is connected to the upper portion of the scraper rotating body 4 and rotates to the left or right with the scraper rotating body 4 while the scum floated on the water surface of the sewage stored in the circular sedimentation basin 1 It is good to collect to the scum box (110).

3 is an enlarged schematic view of the scum box in FIG. 2, and FIG. 4A is a cross-sectional view of the scum box in FIG. 3 and shown in the "A" direction. FIG. 4B is a cross-sectional view of the scum box in FIG. 3 and the "B" direction. It is sectional drawing shown.

As shown in the figure, the scum box 110 is preferably installed between the center feed well 9 of the sludge discharge device and the side wall of the circular sedimentation basin 1 to be configured to rotate from above to below or below. Do. In addition, an upper surface of the scum box 110 may be opened, and a bottom surface of the scum box 110 may have the outlet hole 111 in an outer direction of the circular sedimentation basin 1. In addition, the bottom of the scum box 110 may be inclined so that the position of the outlet hole 111 is biased downward.

The scum box 110 is preferably introduced into the scum collected by the scum skimmer 7 to the opened upper surface and discharged to the wound or dehydration facility through the outlet hole 111.

In addition, the scum box 110 is preferably formed in a semicircular cross section cut into the longitudinal. 4A and 4B, both end portions formed in the longitudinal direction of the scum box 110 form a bent portion 110a and at the same time the end portions form a slope in the longitudinal direction. 9) The height of the side is preferably formed higher than the height of the opposite side end. As such, the end portion is inclined so that it is difficult for the scum to flow into the end portion of the scum box 110 on the side of the center feed well 9, and the To induce the introduction of the scum to the end of the scum box 110. Therefore, scum may be easily leaked to the outlet hole 111.

In addition, the bent portion (110a) also forms a slope in the longitudinal direction, the end of the bent portion (110a) of the center feed well 9 side is preferably formed to have a higher height than the end of the opposite side. The scum collected by the scheme skimmer 7 in the above-described structure is induced to flow into the scum box 110 while moving toward the opposite side or the circular sedimentation basin 1 from the center feed well 9 side. will be. In addition, the bent portion (110a) by forming a slope, the bent portion (110a) in the outward direction of the circular sedimentation basin (1) is composed of a surface area as short as possible, by this configuration scum sticking or moss Minimize the creation. On the other hand, since the bent part 110a on the side of the center feed well 9 is in the direction of the rotation axis of the skimmed skimmer 7, the scum skimmer 7 has a large cleaning effect due to the surface being scoured. Minimizing sticky or selfish creation.

The scum box reducer 130 is installed on the sidewall on which the scum box 110 is rotatably coupled to the circular sedimentation basin 1, and the scum box reducer 130 is gear-coupled with the scum box 110.

In more detail, a drive shaft 131 is formed in the scum box reducer 130, and the scum box 110 is rotatably coupled to the side wall of the circular sedimentation basin 1 by the driven shaft 135, and the drive shaft ( 131 and the driven shaft 135 may be connected by the chain 133 to rotate the scum box 110 by the scum box reducer 130.

On the other hand, the scum box 110 is preferably made of stainless steel to suppress the production of moss and the like.

The above-described configuration is to reveal that the general gear coupling structure can be produced by modifying the various gear coupling structure generally used by those skilled in the art.

Referring to the operation structure of the scum box 110 in accordance with one embodiment as follows.

The scum box 110 is usually configured to be inclined at a constant slope in the advancing direction of the scum skimmer 7. In addition, first and second limit switches 12a and 12b are installed at both sides of the circular sedimentation basin 1 on both sides of the scum box 110 so that the scum skimmer 7 rotates to form the scum box 110. When entering the upper side of the first limit switch 12a operates the scum box reducer 130 to rotate the scum box 110 to be inclined in the opposite direction to the traveling direction of the scum skimmer (7). Accordingly, the scum box 110 is horizontal with the surface of the sewage stored in the circular sedimentation basin 1 so that the scum collected by the scum skimmer 7 is opened through the upper surface of the scum box 110. It is drawn into the inside of 110 to be discharged through the outlet hole 111. When the scum skimmer 7 is separated from the upper side of the scum box 110, the second limit switch 12b operates the scum box reducer 130 so that the scum box 110 causes the scum skimmer 7. By rotating in the direction of the inclination to be inclined to a certain slope so that the sewage into the outlet hole 111 is not introduced.

By the above-described configuration, the scum box 110 normally prevents sewage from flowing into the interior, but only when the scum skimmer 7 collects scum and enters the scum therein, the scum box 110 enters the scum into the outflow hole 111. It is to be discharged through. At this time, the bottom surface of the scum box 110 may be inclined to induce the scum to discharge to the outlet hole (111).

Here, the outlet hole 111 may be configured to correspond to the scum box 110 is rotated by communicating with one end of the flexible pipe 150 downward to freely move the position, the other end of the flexible pipe 150 It is preferable to communicate with one end of the scum discharge pipe 170 to discharge the scum to a pretreatment facility or a dehydration facility.

FIG. 5A is an enlarged cross-sectional view of a drainage path of an “X” portion in FIG. 1.

As shown in Figure 5a, the V-Weir (V-Weir) is formed on the side wall of the circular sedimentation basin (1), the drain passage 11 is preferably formed on the outer periphery of the side wall.

The V-wear 250 may be formed so that the upper portion of the V-shaped shape is continuously formed in order to adjust the amount of overflow at once while preventing the overflow of the sewage stored in the circular sedimentation basin 1 as much as possible. The v-wear 250 is preferably fixed to the side wall of the circular sedimentation basin 1 by an anchor bolt or the like.

The drainage passage 11 may be formed to guide the overflowed sewage to the discharge portion 300 connected to one side of the drainage passage 11.

The sewage terminal treatment system according to an embodiment of the present invention includes a lining 210 installed to cover the upper side of the drainage passage 11 and a discharge part 300 communicating with the other side of the lining 210.

The lining 210 is made of a stainless material is excellent in the function of reflecting light has the effect of suppressing the growth of moss as much as possible. In addition, since the surface is even, it is possible to clean only by spraying the washing water by installing a washing pump (not shown) without cleaning by using manpower, thereby reducing the cost and easy cleaning.

The lining 210 is installed at a predetermined distance from the upper surface of the drainage passage 11 on the upper side of the drainage passage 11, the support 220 is installed on the upper side of the drainage passage 11 for this configuration. And the bottom surface of the lining 210 is formed to be superimposed on the upper surface of the support 220, the lining 210 and the support 220 is on the side of the circular sedimentation basin 1 by the anchor bolt (n) It is preferable to be fixed.

The support 220 and the lining 210 is characterized in that the installation height of the "X" section is the highest, the installation height is lowered toward the "Z" section through the "Y" section with reference to Figure 1 do. Therefore, the support 220 and the lining 210 in the "X" section is preferably installed on the upper portion of the drainage path (11).

FIG. 5B is an enlarged cross-sectional view of the drainage path of the portion “Y” in FIG. 1.

As shown in FIG. 5B, the support 220 and the lining 210 are installed in the middle of the drainage path 11 in the “Y” section so that the overflow water flows from the “X” section to the “Y” section. It is desirable to help increase the flow rate at the same time.

FIG. 5C is an enlarged cross-sectional view of a drainage path of a portion “Z” in FIG. 1.

As shown in FIG. 5C, the support 220 and the lining 210 are installed at the lower portion of the drainage path 11 in the “Z” section so that the overflow water flows from the “Y” section to the “Z” section. It is good practice to help increase the flow rate at the same time. In addition, the “Z” section may be in communication with the discharge part 300 in the circumferential direction to guide the overflow water to the discharge part 300.

5A, 5B and 5C, the lining 210 is formed to have an inclination such that the height of the inner circumferential direction is high and the height of the outer circumferential direction is low, thereby reducing the welding point of the lining 210 with an additional flow rate increasing effect. Moss can have the effect of suppressing the environment that can grow as much as possible.

6A is a cross-sectional view schematically illustrating the inside of the sewage terminal treatment system according to an embodiment of the present invention by expanding the discharge unit and the scum recovery unit, and FIG. 6B is a discharge unit of the sewage terminal treatment system according to an embodiment of the present invention. A cross-sectional view schematically showing the inside of the plane by enlarging the washer recovery part.

As shown in the figure, the sewage terminal treatment system according to an embodiment of the present invention is in communication with the outer peripheral side of the drain 11, the discharge portion 300 for discharging the overflow water and the discharge from the drain 11 One side having an upper portion 310a opened at a portion into which the overflow water flows into the portion 300 is installed, and the other side includes a scum recovery portion 310 connected to the pretreatment facility 400.

Referring to FIG. 6A, the discharge part 300 is provided with a storage space 370 communicating with the “Z” section of the drainage passage 11 to store the overflow water therein, and below the storage space 370. It is preferred that the overflow water discharge pipe 350 is drawn in communication in the circumferential direction and discharges the overflow water stored in the storage space 370.

6B, a scum recovery unit 310 is installed in the storage space 370, wherein the scum recovery unit 310 is formed of a pipe, and one side is located inside the storage space 370. It is preferable to penetrate to the outside of the discharge unit 300 to communicate with the pretreatment facility (400, settlement).

In addition, the scum recovery part 310 is disposed at a position where the upper part 310a of one side is opened and the overflow water is introduced into the discharge part 300 from the drain passage 11 so that the incoming water flows into the scum recovery part 310. And to be stored in the storage space 370. Accordingly, scum or moss contained in the overflow water may be collected on one side of the scum recovery unit 310. Here, the opening and closing valve 330 may be installed at a boundary portion between one side and the other side of the scum recovery unit 310.

The valve 330 is vertically formed with the valve handle 331 vertically so that the valve handle 331 protrudes through the upper portion of the discharge portion 300, so that the operator is above the upper surface of the discharge portion 300. It is preferable to be able to operate the valve handle 331 in.

Such a valve 330 is preferably opened at the time of cleaning or collection of foreign matters. Particularly, impurities such as scum or moss are included in the overflow water flowing into the discharge part 300 or at one side of the scum recovery part 310. When a large number of impurities are collected, the impurities may be opened to be discharged to the pretreatment facility 400. On the other hand, usually by locking the valve 330, to prevent the overflow water discharged to the pretreatment facility 400 through the scum recovery unit 310, to be discharged to the river through the overflow water discharge pipe (350) It is desirable to.

7 is a sectional view schematically showing only a part of the scum recovery unit in the sewage terminal treatment system according to an embodiment of the present invention.

As illustrated in FIG. 7, one side of the scum recovery unit 310 may have an upper portion 310a open, and the opened upper portion 310a may have a guide plate 311 toward the drainage passage 11.

The guide plate 311 is formed to be superimposed on the upper portion of the lining 210 of the "Z" section to guide the overflow water to the scum recovery unit 310 in the "Z" section.

On the other hand, the scum recovery unit 310 and the storage space 370 is preferably made of stainless steel to suppress the production of moss.

1: round settler
4: scraper rotary shaft
7: Scheme skimmer
9: Center Feedwell
11: drainage
110: Scumbox
130: scum box reducer
210: lining
300: discharge part
310: scum recovery unit

Claims (16)

In the sewage end treatment system of the circular sedimentation basin with a sludge discharge device provided with a rotating scraper rotating body,
A scum skimmer connected to the scraper rotor and rotating;
A scum box installed between the sludge discharge device and the side wall of the circular sedimentation basin, the upper surface of which is opened and an outlet hole is formed on the bottom surface of the sludge discharge device to discharge the scum collected by the scum skimmer; And
A scum box reducer installed on the sidewall of the circular sedimentation basin to rotate the scum box;
The scum box
Ends are formed on both sides in the longitudinal direction, and one side of the ends of both sides is formed with a slope in which the center side height of the circular sedimentation basin is higher than the other side,
The one end portion forms a bent portion, wherein the bent portion forms a slope in which the height of the center side of the circular sedimentation basin is higher than the other height so that the scum collected by the scum skimmer moves from the center side of the circular sedimentation basin to the other side. Sewage treatment system characterized in that it collects and discharges the scum generated in the circular sedimentation basin, including inducing to be introduced into the scum box. The method according to claim 1,
Limit switch is installed on the side wall of the circular sedimentation basin,
The limit switch operates the scum box reducer when the scum skimmer enters the upper side of the scum box and rotates the scum box inclined to one side to discharge the scum collected by the scum skimmer into the outlet hole. And operating the scum box reducer when the scum skimmer leaves the upper side of the scum box so that the scum box is rotated to one side so that sedimented water does not flow into the outflow hole. The method according to claim 1,
The scum box is sewage terminal treatment system, characterized in that made of stainless steel. The method according to claim 1,
The scum box is sewage terminal treatment system, characterized in that the longitudinal cross-section. The method according to claim 1,
The bent portion of the sewage terminal treatment system, characterized in that the central side length of the circular sedimentation basin is formed longer than the other side length, and forms a slope toward the lower side relative to the end of the scum box. The method according to claim 1,
The sewage box and the scum box reducer is sewage terminal treatment system characterized in that the gear is connected. The method according to claim 1,
One end of the flexible pipe is connected to the lower side of the outlet hole,
The other end of the flexible pipe is sewage terminal treatment system, characterized in that connected to one end of the scum discharge pipe formed on the side wall of the circular sedimentation basin. The method according to claim 1,
Bottom of the scum box is a sewage terminal treatment system, characterized in that to form a slope so that the outlet hole is located on the lower side. The method according to claim 1,
A drainage passage providing a flow path of the overflowed water around the outer periphery of the circular settler;
Installed to cover the upper side of the drainage, the installation height is formed from the one side of the drainage toward the other side is lower lining to guide the overflow water to the other side and
It further comprises a discharge portion communicating with the other side of the lining to discharge the overflow water,
The sewage terminal treatment system, characterized in that the flow rate of the overflow water is increased from one side of the lining to the other side. The method according to claim 9,
Sewage terminal treatment system, characterized in that the upper side along the side wall of the circular sedimentation is further installed to stand on the top v-shaped made of a serrated plate body. The method according to claim 9,
The support is installed on the upper side of the drainage,
The lining is sewage terminal treatment system, characterized in that supported by the support. The method according to claim 9,
The lining is made of stainless steel, sewage terminal treatment system characterized in that the inclination is formed in the outer or inner circumferential direction. The method of claim 1,
The circular settler receives sewage from a pretreatment facility,
The sewage terminal treatment system
A drainage channel formed at an outer periphery of the circular settler battery;
A discharge part communicating with the outer circumferential side of the drainage path and discharging the overflowed water; And
One side of which the upper part is opened is installed at the site into which the overflow water flows into the discharge part from the drainage path, and the other side further includes a scum recovery part connected to the pretreatment facility.
Sewage terminal treatment system, characterized in that to collect the scum contained in the overflow water to the pretreatment facility. The method according to claim 13,
The scum recovery unit is provided with a valve for opening and closing between one side and the other side,
The valve is formed with a valve handle for controlling the valve on the top,
And said scum recovery part is opened at the time of cleaning or collection of foreign matter and is closed at the time of discharge of overflow water. The method according to claim 13,
The sewage terminal treatment system, characterized in that the guide plate which is connected to the drainage channel is formed on one side of the upper part of the scum recovery unit. The method according to claim 13,
Sewage terminal treatment system, characterized in that the discharge portion and scum recovery portion made of stainless steel.

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