JP2895721B2 - Scum removal device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a scum removing device.

[0002]

2. Description of the Related Art Conventionally, in a sedimentation tank for water treatment, wastewater supplied from the outside is separated into suspended matter and treated water. In this case, a scum removing device is used to remove scum floating on the surface of the settling tank. The scum remover has a scum gap extending in the radial direction, and the scum is rotated around a rotation axis to scrape the scum and discharge the scum into the pipe gap.

FIG. 2 is a plan view of a conventional scum remover, FIG. 3 is a sectional view taken along line AA of FIG. 2, FIG. 4 is a plan view of a main part of the conventional scum remover, and FIG. It is sectional drawing. In the figure, reference numeral 11 denotes a circular sedimentation tank to which sewage is supplied from the outside, and a cylindrical treated water overflow plate 12 is concentrically fixed to the periphery of the sedimentation tank 11. Triangular notches (not shown) are formed at various places in the circumferential direction of the treated water overflow plate 12,
The treated water separated from the suspended matter in the sedimentation tank 11 flows into the trough 17 radially outward through the triangular notch. Therefore, the level of the water surface of the sedimentation tank 11 (hereinafter referred to as “overflow water level”) is set at an intermediate portion of the triangle notch.

[0004] A cylindrical baffle plate 13 is further disposed on the inner peripheral side of the treated water overflow plate 12 to prevent scum from flowing out. The baffle plate 13 has an upper end protruding above the water surface, and the treated water passes under the baffle plate 13 and moves radially outward. Reference numeral 14 denotes a rotating shaft that is rotated by a driving device (not shown), and the scum gap 15 is fixed to the rotating shaft 14. The inner end of the scum gap 15 is the rotation shaft 14.
And a rod 15 extending outward in the radial direction.
a and a scum scraping plate 15b suspended downward from the rod 15a. The scum scraping plate 15b is formed of a band-shaped plate, and the position is set such that the lower end extends slightly downward from the water surface.

A cylindrical feed well 16 is fixed around the rotary shaft 14 so as to rotate together with the rotary shaft 14. The wastewater supplied from outside is received by the feed well 16.
Incidentally, a cylindrical pipe gap 19 extending radially along the water surface of the settling tank 11 is provided, and an opening 19a extending in the axial direction is formed above the pipe gap 19. A fixed base 20 is disposed between the inner periphery of the baffle plate 13 below the pipe gap 19 and the outer periphery of the feed well 16, and the fixed stand 20 extends in the radial direction along the pipe gap 19. I do.

[0006] Bearings 22 are disposed at both ends of the pipe skimmer 19, and the pipe skimmer 19 is rotatably supported by the fixed base 20 via the bearings 22. Therefore, by rotating the pipe gap 19, the opening direction of the opening 19a can be inclined toward the side facing the scum gap 15, and a part of the opening 19a can be located in the sewage. In this manner, the scum raked by the scum gap 15 is swallowed into the pipe gap 19.

In order to rotate the pipe gap 19, an opening kicker 23 and a closing kicker 24 are provided on the outer periphery of the feed well 16 so as to be shifted vertically and forward and backward in the rotation direction. On the other hand, the pipe gap 1
An opening lever 25 corresponding to the opening kicker 23 and a closing lever 26 corresponding to the closing kicker 24 are provided on the outer periphery of the inner end of 9 to protrude upward and downward with their phases shifted from each other. The opening kicker 23 and the closing kicker 24 do not need to be directly attached to the outer peripheral wall surface of the feed well 16, but are attached to the rotating shaft 14 or a member integral with the rotating shaft 14 and are radially outward from the outer periphery of the feed well 16. You may make it protrude to one side.

[0010] As shown in FIG. 5, the opening kicker 23, which is located at the lower part in the front of the feed well 16 in the rotation direction, pushes and retracts the opening lever 25 located below the pipe skimmer 19. The pipe gap 19 rotates in the direction of arrow C as shown by the two-dot chain line, and positions a part of the opening 19a in the sewage. On the other hand, when the closing kicker 24 positioned above the feed well 16 in the rotation direction pushes back the closing lever 26 positioned above the pipe skimmer 19, the pipe skimmer 19 returns to the original position indicated by the solid line.

[0009]

However, the conventional scum removing apparatus cannot sufficiently remove the scum floating on the water surface of the settling tank 11. That is, for example, when a small-scale sewage treatment apparatus is newly installed, the flow rate of sewage supplied to the sedimentation tank 11 is small at the beginning of water supply, and the small-scale sewage treatment apparatus is often operated in batch. Therefore, the overflow water level becomes lower than the planned water level, and it becomes impossible to swallow scum into the pipe gap 19.

An object of the present invention is to solve the problems of the conventional scum removing device and to provide a scum removing device capable of reliably removing scum even when the overflow water level changes.

[0011]

For this purpose, in the scum removing apparatus of the present invention, there is provided a rotary shaft provided in a sedimentation tank, a scum gap fixed to the rotary shaft and extending in a radial direction. A feed well fixed to the rotating shaft for receiving sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, and a bearing rotatably supporting the pipe gap And a rotating means for rotating the pipe gap.

A support member for supporting the bearing;
An adjusting member for adjusting a relative position between the supporting member and the precipitation tank; Further, in another scum removing device of the present invention, a rotating shaft disposed in the settling tank, a scum gap fixed to the rotating shaft and extended in the radial direction, fixed to the rotating shaft, A feed well for receiving sewage supplied from outside, a cylindrical pipe gap extending radially along the water surface, a bearing rotatably supporting the pipe gap, and a rotation of the feed well. A rotating means for rotating the pipe gap. The turning means includes a lever provided on the pipe gap and a kicker provided on the feed well.

[0013] Further, there is provided an adjusting member for adjusting a relative position between the kicker and the feed well. Further, in still another scum removing device of the present invention, a rotating shaft disposed in a settling tank, a scum gap fixed to the rotating shaft and extended in a radial direction, and fixed to the rotating shaft. A feed well for receiving sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, a bearing rotatably supporting the pipe gap, and rotation of the feed well. And a rotating means for rotating the pipe gap. The turning means includes a lever provided on the pipe gap and a kicker provided on the feed well.

An adjusting member is provided for adjusting the relative position between the lever and the pipe gap.

[0015]

According to the present invention, in the scum removing device as described above, the rotating shaft provided in the settling tank, the scum gap fixed to the rotating shaft and extending in the radial direction, A feed well fixed to the shaft, for receiving sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, and a bearing rotatably supporting the pipe gap, Rotating means for rotating the pipe gap.

Therefore, the sewage supplied from outside is
The suspended substance and treated water are separated in the settling tank, and the treated water is discharged from the settling tank. Meanwhile, the scum floating on the water surface is swept up by the scum gap and swallowed into the pipe gap. And it has the support member which supports the said bearing, and the adjustment member which adjusts the relative position of this support member and a precipitation tank. In this case, when the overflow water level becomes lower than the planned water level, the relative position between the support member and the settling tank is adjusted by the adjusting member, and the pipe gap is moved downward.

Further, in another scum removing device of the present invention, a rotary shaft disposed in a settling tank, a scum gap fixed to the rotary shaft and extended in a radial direction, A feed well fixed to receive sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, a bearing rotatably supporting the pipe gap, and a feed well Rotating means for rotating the pipe gap with the rotation of. The turning means includes a lever provided on the pipe gap and a kicker provided on the feed well.

Therefore, the sewage supplied from outside is
The suspended substance and treated water are separated in the settling tank, and the treated water is discharged from the settling tank. Meanwhile, the scum floating on the water surface is swept up by the scum gap and swallowed into the pipe gap. And it has the adjustment member which adjusts the relative position of the said kicker and a feed well. In this case, when the overflow water level becomes lower than the planned water level, the relative position between the kicker and the feed well is adjusted by the adjusting member, and the inclination angle of the opening of the pipe gap is changed.

According to still another scum removing apparatus of the present invention, there is provided a rotating shaft disposed in a settling tank, a scum gap fixed to the rotating shaft and extending in a radial direction, A feed well for receiving sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, a bearing rotatably supporting the pipe gap, and a feed pipe. Rotating means for rotating the pipe gap with the rotation of the well. The rotating means comprises a lever provided on the pipe gap and a kicker provided on the feed well.

Therefore, the sewage supplied from outside is
The suspended substance and treated water are separated in the settling tank, and the treated water is discharged from the settling tank. Meanwhile, the scum floating on the water surface is swept up by the scum gap and swallowed into the pipe gap. And it has an adjustment member for adjusting the relative position between the lever and the pipe gap. In this case, when the overflow water level is lower than the planned water level, the relative position between the lever and the pipe gap is adjusted by the adjusting member,
Change the inclination angle of the opening of the pipe gap.

[0021]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing an elevating mechanism of a pipe gap in a first embodiment of the present invention, FIG. 6 is a plan view of a settling tank in the first embodiment of the present invention, and FIG. It is.

In the figure, reference numeral 11 denotes a circular sedimentation tank to which sewage is supplied from the outside.
A cylindrical treated water overflow plate 12 is fixed concentrically. Triangular notches (not shown) are formed at various places in the circumferential direction of the treated water overflow plate 12, and the treated water separated from the suspended matter in the settling tank 11 is radially outward through the triangular notches. Overflow into trough 17. Therefore, the overflow water level is set at an intermediate portion of the triangle notch.

Further, a cylindrical baffle plate 13 is disposed further inside the treated water overflow plate 12 to prevent scum from flowing out. The baffle plate 13 has an upper end protruding above the water surface, and the treated water passes under the baffle plate 13 and moves radially outward. A corridor 30 is erected on the sedimentation tank 11, and a driving device 31 is provided at the center of the corridor 30. Also, 1
Reference numeral 4 denotes a rotating shaft rotated by a driving device 31, and the scum gap 15, the feed well 16 and the sludge scraping blade 33 are fixed to the rotating shaft 14.

The scum gap 15 has a rod 15 having an inner end fixed to the rotating shaft 14 and extending in a radial direction.
a and a scum scraping plate 15b suspended downward from the rod 15a. The scum scraping plate 15b is formed of a band-shaped plate, and the position is set such that the lower end extends slightly downward from the water surface. Further, the feed well 16 has a cylindrical shape and is configured to rotate together with the rotating shaft 14. The wastewater supplied from outside is received by the feed well 16. afterwards,
Sewage flows from the lower end of feed well 16 to feed well 1
6, and the suspended solids and the treated water are separated.

Further, the sludge scraping blade 33 is extended radially along the bottom surface of the settling tank 11, and
In 1, the suspended solids separated from the wastewater and settled as sludge are swept up. A tubular pipe gap 19 extending in the radial direction is provided along the water surface of the settling tank 11, and an opening 19 a extending in the axial direction is formed above the pipe gap 19. The pipe skimmer 19 is supported radially outward by a scum collection box 35, and is supported radially inward by a beam 36 installed in the precipitation tank 11.

A bearing 39 is provided at a radially outer end of the pipe skimmer 19, and a bearing 40 is provided at a radially inner end of the pipe skimmer 19.
Is rotatably supported. Therefore, pipe gap 1
By rotating the opening 9, the opening direction of the opening 19 a can be inclined toward the side facing the scum gap 15, and a part of the opening 19 a can be located in sewage. In this way, the scum raked by the scum gap 15 is swallowed into the pipe gap 19.

In order to rotate the pipe skimmer 19, an opening kicker 23 and a closing kicker 24 as rotating means project from the outer periphery of the feed well 16 by shifting the position in the vertical and rotational directions. Is established. On the other hand, an opening lever 2 as a rotating means corresponding to the opening kicker 23 is provided around the inner end of the pipe gap 19.
5, and a closing lever 26 as a rotating means corresponding to the closing kicker 24 are projected upward and downward out of phase with each other. The opening kicker 23 and the closing kicker 24 do not need to be directly attached to the outer peripheral wall surface of the feed well 16, but are attached to the rotating shaft 14 or a member integral with the rotating shaft 14 and are radially outward from the outer periphery of the feed well 16. You may make it protrude to one side.

The opening kicker 23 located in the lower part of the feed well 16 at the front in the rotation direction is connected to the pipe skimmer 1.
By pushing back the opening lever 25 located on the lower side of the pipe 9, the pipe skimmer 19 rotates, and a part of the opening 19a is located in the sewage. On the other hand, when the closing kicker 24 located above the feed well 16 at the rear in the rotation direction pushes back the closing lever 26 located above the pipe skimmer 19, the pipe skimmer 19 returns to the original position.

The positions of the opening lever 25 and the closing lever 26 attached to the pipe skimmer 19 are set so that the amount of treated water simultaneously swallowed when the scum is swallowed into the pipe skimmer 19 is minimized. You. By the way, for example, when a small-scale sewage treatment apparatus is newly installed, the flow rate of sewage supplied to the sedimentation tank 11 is small at the beginning of water supply, and the small-scale sewage treatment apparatus is often operated in batch. Therefore, the overflow water level will be lower than the planned water level.

Therefore, the pipe gap 19 can be raised and lowered in accordance with the change of the overflow water level. To this end, an “L” -shaped frame 51 is fixed to the beam 36, and a bearing base 52 as an “L” -shaped support member is provided so as to be vertically movable with respect to the frame 51. The frame 51 includes a vertical portion 51a and a horizontal portion 51b.
The bearing base 52 also includes a vertical portion 52a and a horizontal portion 52b. Long grooves 53 and 54 extending in the vertical direction are formed in the vertical portion 51a.
The bolts and nuts 55 and 56 fixed to the
3 and 54.

A bracket 60 as a support member is fixed to the vertical portion 52a, and the bearing 40 is provided on the bracket 60. Further, a bolt 58 as an adjusting member projecting upward is fixed to the horizontal portion 51b, while a nut 59 as an adjusting member screwed with the bolt 58 is rotated to the horizontal portion 52b. Arranged freely.

Therefore, by rotating the nut 59 from above the walkway 30 with a detachable box wrench (not shown), the bearing base 5 with respect to the frame 51 is rotated.
By changing the position of No. 2 relatively, the pipe gap 19 can be raised and lowered to adjust the height to a required height. On the other hand, the bearing 39 side of the pipe skimmer 19 can have the same structure.

In this case, the scum gap 1 is placed on the bearing 39.
Since 5 does not pass, the lifting mechanism can be easily formed. Next, a second embodiment of the present invention will be described. FIG. 8 is a plan view of the lifting / lowering mechanism of the opening kicker according to the second embodiment of the present invention. FIG. 9 is a side view of the lifting / lowering mechanism of the opening kicker according to the second embodiment of the present invention.

In this case, the pipe gap 19 (FIG. 7)
The opening kicker 23 as the rotating means is moved up and down in accordance with the change in the overflow water level without changing the position of the opening kicker 23. By raising and lowering the opening kicker 23, the inclination angle of the opening 19 a of the pipe skimmer 19 is changed, so that the scum scraped by the scum skimmer 15 can be easily swallowed into the pipe skimmer 19.

In the drawing, reference numeral 16 denotes a feed well fixed to the rotating shaft 14, and 23 denotes an opening kicker for rotating the pipe skimmer 19 by pushing back an opening lever 25 as a rotating means. Also, 24 pushes the closing lever 26 away to remove the pipe gap 1.
9 is a closing kicker for returning 9 to its original position. Since the closing kicker 24 is fixed to the feed well 16, it cannot be moved up and down.

A kicker support 63 is fixed to the feed well 16, and a rod 64 extends through the kicker support 63. The opening kicker 23 is fixed to the rod 64, and a screw portion 64a as an adjusting member is formed at the upper end. On the other hand, on the kicker support 63, a nut 65 as an adjustment member screwed with the screw portion 64a is rotatably disposed.

Therefore, by rotating the nut 65 from above the walkway 30 with a detachable box wrench (not shown), the position of the rod 64 with respect to the kicker support 63 is relatively changed, and the opening kicker 23 is raised and lowered. It can be adjusted to the required height. next,
A third embodiment of the present invention will be described.

FIG. 10 is a plan view of a mechanism for raising and lowering the opening kicker and the closing kicker according to the third embodiment of the present invention.
FIG. 1 is a side view of a lifting / lowering mechanism of an opening kicker and a closing kicker according to a third embodiment of the present invention. In this case, the opening kicker 23 and the closing kicker 24 as rotating means are moved up and down in accordance with the change in the overflow water level. By raising and lowering the opening kicker 23, the inclination angle of the opening 19a of the pipe skimmer 19 (FIG. 7) is changed so that the scum scraped by the scum skimmer 15 can be easily swallowed into the pipe skimmer 19. ing.

In the drawing, reference numeral 16 denotes a feed well fixed to the rotating shaft 14, and reference numeral 23 denotes an opening kicker for rotating the pipe skimmer 19 by pushing back the opening lever 25. Reference numeral 24 denotes a closing kicker for returning the pipe skimmer 19 to the original position by pushing the closing lever 26 away. A kicker support 73 is fixed to the feed well 16, and a slider 74 is disposed on the kicker support 73 so as to be able to move up and down. The upper end rod 74 a and the lower end rod 74 b
Extend through the kicker support 73. The opening kicker 23 and the closing kicker 24 are fixed to the slider 74, and the rod 74a forms a screw portion as an adjustment member.

On the other hand, on the kicker support 73, a nut 75 is rotatably disposed as an adjusting member to be screwed with the threaded portion of the rod 74a. Therefore, by rotating the nut 75 from above the walkway 30 with a detachable box wrench (not shown), the position of the slider 74 with respect to the kicker support 73 is relatively changed, and the opening kicker 23 and the closing kicker 24 are raised and lowered. It can be adjusted to the required height.

Next, a fourth embodiment of the present invention will be described. FIG. 12 is a front view of an opening lever adjusting mechanism according to the fourth embodiment of the present invention, and FIG. 13 is a side view of the opening lever adjusting mechanism according to the fourth embodiment of the present invention. In this case, the relative angle of the opening lever 25 with respect to the pipe gap 19 is adjusted according to the change in the overflow water level. Opening lever 25 for pipe gap 19
By adjusting the relative angle of the scum, the inclination angle of the opening 19a is changed, and the scum scraped by the scum gap 15 (FIG. 7) can be easily swallowed into the pipe gap 19.

Therefore, the shaft 19 of the pipe skimmer 19
The hub 25a of the opening lever 25 is supported by b.
A projecting piece 81 is formed on the end surface of the pipe gap 19, and a projecting piece 82 is formed radially outward from the hub 25a. Then, a bolt 83 as an adjusting member is screwed to the projecting piece 81, and the tip of the bolt 83 is brought into contact with the projecting piece 82.

Accordingly, the angle of the opening lever 25 with respect to the pipe skimmer 19 can be changed relatively by rotating the bolt 83 from above the walkway 30 with a detachable box wrench (not shown). It should be noted that the present invention is not limited to the above embodiment, and various modifications can be made based on the gist of the present invention.
They are not excluded from the scope of the invention.

[0044]

As described above in detail, according to the present invention, in the scum removing apparatus, the rotating shaft provided in the sedimentation tank, and fixed to the rotating shaft and extended in the radial direction. A scum gap, a feed well fixed to the rotating shaft for receiving sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, and the pipe gap rotatably. It has a bearing to support and a turning means for turning the pipe gap.

Therefore, the sewage supplied from outside is
The suspended substance and treated water are separated in the settling tank, and the treated water is discharged from the settling tank. Meanwhile, the scum floating on the water surface is swept up by the scum gap and swallowed into the pipe gap. And it has the support member which supports the said bearing, and the adjustment member which adjusts the relative position of this support member and a precipitation tank. In this case, when the overflow water level becomes lower than the planned water level, the relative position between the support member and the settling tank is adjusted by the adjusting member, and the pipe gap is moved downward. Therefore, the scum is reliably swallowed in the pipe gap.

According to another scum removing apparatus of the present invention, there is provided a rotary shaft provided in a settling tank, a scum gap fixed to the rotary shaft and extended in a radial direction, A feed well fixed to receive sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, a bearing rotatably supporting the pipe gap, and a feed well Rotating means for rotating the pipe gap with the rotation of. The turning means includes a lever provided on the pipe gap and a kicker provided on the feed well.

Therefore, the sewage supplied from outside is
The suspended substance and treated water are separated in the settling tank, and the treated water is discharged from the settling tank. Meanwhile, the scum floating on the water surface is swept up by the scum gap and swallowed into the pipe gap. And it has the adjustment member which adjusts the relative position of the said kicker and a feed well. In this case, when the overflow water level becomes lower than the planned water level, the relative position between the kicker and the feed well is adjusted by the adjusting member, and the inclination angle of the opening of the pipe gap is changed. Therefore, the scum is reliably swallowed in the pipe gap.

According to still another scum removing apparatus of the present invention, there is provided a rotary shaft provided in a settling tank, a scum gap fixed to the rotary shaft and extended in a radial direction, A feed well for receiving sewage supplied from the outside, a cylindrical pipe gap extending radially along the water surface, a bearing rotatably supporting the pipe gap, and a feed pipe. Rotating means for rotating the pipe gap with the rotation of the well. The turning means includes a lever provided on the pipe gap and a kicker provided on the feed well.

Therefore, the sewage supplied from outside is
The suspended substance and treated water are separated in the settling tank, and the treated water is discharged from the settling tank. Meanwhile, the scum floating on the water surface is swept up by the scum gap and swallowed into the pipe gap. And it has an adjustment member for adjusting the relative position between the lever and the pipe gap. In this case, when the overflow water level is lower than the planned water level, the relative position between the lever and the pipe gap is adjusted by the adjusting member,
Change the inclination angle of the opening of the pipe gap. Therefore,
The scum is surely swallowed in the pipe gap.

[Brief description of the drawings]

FIG. 1 is a view showing a pipe skimmer elevating mechanism according to a first embodiment of the present invention.

FIG. 2 is a plan view of a conventional scum removing device.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of a main part of a conventional scum removing device.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 is a plan view of a precipitation tank according to the first embodiment of the present invention.

FIG. 7 is a sectional view taken along line DD of FIG. 6;

FIG. 8 is a plan view of a lifting / lowering mechanism of an opening kicker according to a second embodiment of the present invention.

FIG. 9 is a side view of a lifting / lowering mechanism of an opening kicker according to a second embodiment of the present invention.

FIG. 10 is a plan view of a lifting / lowering mechanism of an opening kicker and a closing kicker according to a third embodiment of the present invention.

FIG. 11 is a side view of a lifting / lowering mechanism of an opening kicker and a closing kicker according to a third embodiment of the present invention.

FIG. 12 is a front view of an opening lever adjusting mechanism according to a fourth embodiment of the present invention.

FIG. 13 is a side view of an opening lever adjustment mechanism according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Precipitation tank 14 Rotating axis 15 Scum gap 16 Feed well 19 Pipe gap 23 Opening kicker 24 Closing kicker 25 Opening lever 26 Closing lever 52 Bearing base 58,83 Bolt 59,65,75 Nut 64a Screw part 74a Rod

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-18696 (JP, U) JP-A-3-7996 (JP, U) JP-B-58-35110 (JP, B2) (58) Field (Int.Cl. ⁶ , DB name) B01D 21/24 C02F 1/40

Claims (3)

(57) [Claims] 1. (a) a rotating shaft provided in a precipitation tank;
(B) a scum gap fixed to the rotating shaft and extended in the radial direction; and (c) a feed well fixed to the rotating shaft and receiving sewage supplied from the outside.
(D) a cylindrical pipe gap extending radially along the water surface; (e) a bearing for rotatably supporting the pipe gap; and (f) turning means for turning the pipe gap. And (g) a supporting member for supporting the bearing, and (h) an adjusting member for adjusting a relative position between the supporting member and the sedimentation tank. 2. (a) a rotating shaft provided in a precipitation tank;
(B) a scum gap fixed to the rotating shaft and extended in the radial direction; and (c) a feed well fixed to the rotating shaft and receiving sewage supplied from the outside.
(D) a cylindrical pipe gap extending radially along the water surface; (e) a bearing for rotatably supporting the pipe gap; and (f) a lever disposed on the pipe gap. The kickwell is provided in the feedwell, and has a turning means for turning the pipe gap as the feedwell rotates, and (g) an adjusting member for adjusting a relative position between the kicker and the feedwell. A scum remover characterized by the above-mentioned. 3. A rotating shaft disposed in a settling tank,
(B) a scum gap fixed to the rotating shaft and extended in the radial direction; and (c) a feed well fixed to the rotating shaft and receiving sewage supplied from the outside.
(D) a cylindrical pipe gap extending radially along the water surface; (e) a bearing for rotatably supporting the pipe gap; and (f) a lever disposed on the pipe gap. A rotation unit configured to rotate the pipe gap with the rotation of the feed well; and (g) an adjustment member configured to adjust a relative position between the lever and the pipe gap. A scum remover characterized by the above-mentioned.