Oily sewage and sludge separation device

Abstract

The utility model belongs to the technical field of sewage treatment, and relates to an oily sewage and sludge separation device which comprises a sedimentation tank, the fishing net is movably matched with the top of the sedimentation tank and is provided with a first position and a second position which can be switched, when the fishing net is in the first position, the fishing net extends into the top of the sedimentation tank and is used for fishing floating oil, and when the fishing net is in the second position, the floating oil can flow out of the sedimentation tank in the first direction; the moving seat is arranged on one side of the top end of the sedimentation tank, a first driving part is arranged on the sedimentation tank, and the driving end of the first driving part is connected with the moving seat, so that the moving seat slides relative to the sedimentation tank in the axial direction of the sedimentation tank; the second driving part is arranged on the moving seat, the driving end of the second driving part is connected with the scoop net so that the scoop net can be switched between the first position and the second position, and the scoop net is matched with the second driving part so as to provide first-direction acting force acting on the floating oil. The oil-containing sewage and sludge treatment efficiency of the sedimentation tank can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and in particular relates to an oily sewage sludge separation device. Background Art

[0002] The treatment of oily sewage sludge mainly involves first subjecting the oily sewage sludge to static sedimentation treatment, achieving primary separation of oil, water and mud through density difference, recovering the floating oil on the upper layer, further treating the oily sewage in the middle layer for reuse, and pre-treating the oily sludge at the bottom by conditioning, sorting and other pre-treatments, and then performing auxiliary treatments such as solidification, biodegradation and mechanical centrifugation to achieve final resource utilization and harmlessness.

[0003] During the treatment process, a large number of sedimentation tanks need to be built first. By passing the oily sewage sludge raw liquid into the sedimentation tank, a separation layer of oil, water and mud is formed from top to bottom after a long period of sedimentation. After being extracted in order, targeted reduction, resource utilization and harmless treatment are carried out to improve the treatment efficiency. However, during the sedimentation process, the existing technology usually pushes the floating oil to one side of the sedimentation tank so that the floating oil piles up and gradually accumulates. When the floating oil height exceeds the baffle, it is discharged from the sedimentation tank, which makes the sedimentation separation efficiency low. Therefore, an oily sewage sludge separation device is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide an oily sewage sludge separation device to solve the above problems and improve the efficiency of treating oily sewage sludge in a sedimentation tank.

[0005] To achieve the above purpose, the utility model provides the following solution: an oily sewage sludge separation device, comprising:

[0006] Sedimentation tanks;

[0007] a scoop net, movably fitted on the top of the sedimentation tank, and having a switchable first position and a second position, wherein when in the first position, the scoop net extends into the top of the sedimentation tank to scoop up floating oil, and when in the second position, the floating oil can flow out of the sedimentation tank along a first direction;

[0008] A movable seat is arranged at one side of the top of the sedimentation tank. A first driving member is provided on the sedimentation tank. The driving end of the first driving member is connected to the movable seat so that the movable seat slides relative to the sedimentation tank along the axis direction of the sedimentation tank.

[0009] A second driving member is arranged on the movable seat, and a driving end of the second driving member is connected to the scoop net so that the scoop net can be switched between the first position and the second position, wherein the scoop net cooperates with the second driving member to provide a first direction force acting on the floating oil.

[0010] Preferably, it also includes:

[0011] The collecting box defines a collecting cavity inside and has an open end at the top. The collecting box is arranged at one side of the sedimentation tank. When the floating oil flows out of the sedimentation tank along a first direction, the floating oil can flow into the collecting cavity through the open end.

[0012] Preferably, it also includes:

[0013] At least one pair of hooks is configured such that the hook ends are connected to one side of the side wall of the sedimentation tank, and the other end away from the hook ends is welded to the collection box.

[0014] Preferably, the second driving member comprises:

[0015] A stepper motor is fixedly connected to the moving seat, the output shaft of the stepper motor is fixedly connected to a rotating rod, the rotating rod is mounted above the sedimentation tank and is connected to the sedimentation tank, a rotating ring is fixedly mounted on the rotating rod, and a side wall of the rotating ring is fixedly connected to the scoop net;

[0016] A first top column, fixedly connected to the movable seat, and configured to abut against the scoop net when in the first position;

[0017] The second top column is fixedly connected to the movable seat and is configured to abut against the scoop net when in the second position.

[0018] Preferably, a pair of the moving seats are provided, the stepping motor is fixedly connected to any one of the pair of the moving seats, and one end of the rotating rod away from the stepping motor is connected to the other moving seat.

[0019] Preferably, the scoop net comprises:

[0020] A pair of support plates, fixedly connected to the rotating ring and symmetrically distributed at both ends of the rotating ring along the center of the rotating ring;

[0021] The filter screen is arranged between the pair of support plates, and the two ends thereof are respectively fixedly connected to the pair of support plates.

[0022] Preferably, the first driving member comprises:

[0023] A pair of mounting plates are fixedly connected to both sides of the top of the sedimentation tank along the length direction thereof;

[0024] A first screw rod is connected between the pair of mounting plates, and the moving seat is threadedly sleeved on the first screw rod;

[0025] The driving motor is fixedly connected to any one of the mounting plates, and the output shaft of the driving motor is fixedly connected to one end of the adjacent first screw rod.

[0026] Preferably, it also includes:

[0027] A treatment tank is arranged on a side of the sedimentation tank away from the collecting box, and a communication port is provided between the middle of the sedimentation tank and the treatment tank;

[0028] The valve is slidably fitted in the communication port. A third driving member is provided on the sedimentation tank. The driving end of the third driving member is connected to the valve so that the valve can switch the communication or blocking state of the communication port.

[0029] Preferably, the third driving member comprises:

[0030] A pair of bases are fixedly connected to two sides of the sedimentation tank, the top of each base is fixedly connected to a rotating motor, and the output shaft of the rotating motor is fixedly connected to a second screw;

[0031] A pair of lifting seats, relatively fixedly connected to both sides of the valve, and the pair of lifting seats correspond to a pair of the second screw rods one by one, and the lifting seats are threadedly sleeved on adjacent second screw rods;

[0032] The guide rail is fixedly connected to the top of the sedimentation tank in the vertical direction, and the valve is slidably fitted in the guide rail.

[0033] Preferably, it also includes:

[0034] A guide plate, fixedly connected to the inner wall of the bottom end of the sedimentation tank, is configured to form a guide outlet end in the sedimentation tank;

[0035] A submersible sewage pump is fixed at the guide outlet end, and the submersible sewage pump has a discharge pipe extending out of the sedimentation tank for discharging oil sludge.

[0036] Compared with the prior art, the utility model has the following advantages and technical effects:

[0037] The technical solution is to movably cooperate with a scoop net on the sedimentation tank, and the scoop net is switched between a first position and a second position respectively. When in the first position, the floating oil on the top of the sedimentation tank can be scooped, and when in the second position, the floating oil can be passed out of the sedimentation tank along a first direction. In addition, the switching of the scoop net position is controlled by a second driving member, which effectively improves the efficiency of treating oily sewage sludge, and drives the moving seat through the first driving member to move the moving seat together with the scoop net along the axial direction of the sedimentation tank, thereby increasing the range of the scoop net to scoop up the floating oil and further improving the treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0039] Figure 1 This is the position relationship diagram of the sedimentation tank and the collection box;

[0040] Figure 2 It is a structural schematic diagram when the scoop net is located at the first position;

[0041] Figure 3 It is a structural schematic diagram when the scoop net is located at the second position;

[0042] Among them, 1. sedimentation tank; 2. moving seat; 3. collection box; 4. hook; 5. stepping motor; 6. rotating rod; 7. rotating ring; 8. first top column; 9. second top column; 10. support plate; 11. filter screen; 12. mounting plate; 13. first screw; 14. driving motor; 15. guide rod; 16. treatment tank; 17. valve; 18. base; 19. lifting seat; 20. guide rail; 21. guide plate; 22. submersible sewage pump; 23. discharge pipe; 24. rotating motor; 25. second screw. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0044] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] Example: Refer to Figure 1-Figure 3 , an oily sewage sludge separation device, comprising:

[0046] Sedimentation tank 1;

[0047] A scoop net is movably fitted on the top of the sedimentation tank 1 and has a switchable first position and a second position. When in the first position, the scoop net extends into the top of the sedimentation tank 1 to scoop up the floating oil. When in the second position, the floating oil can flow out of the sedimentation tank 1 along the first direction.

[0048] The movable seat 2 is arranged at one side of the top of the sedimentation tank 1. The sedimentation tank 1 is provided with a first driving member, and the driving end of the first driving member is connected to the movable seat 2 to form the movable seat 2 to slide relative to the sedimentation tank 1 along the axis direction of the sedimentation tank 1;

[0049] The second driving member is arranged on the movable seat 2, and the driving end of the second driving member is connected to the scoop net so that the scoop net can be switched between the first position and the second position, wherein the scoop net cooperates with the second driving member to provide a first direction force acting on the floating oil.

[0050] The technical solution is to movably cooperate with a scoop net on the sedimentation tank 1, and the scoop net is switched between a first position and a second position respectively. When in the first position, the floating oil on the top of the sedimentation tank 1 can be scooped, and when in the second position, the floating oil can be passed out of the sedimentation tank 1 along a first direction. In addition, the switching of the scoop net position is driven and controlled by a second driving member, which effectively improves the efficiency of the sedimentation tank in treating oily sewage sludge, and drives the moving seat 2 by the first driving member, so that the moving seat 2 and the scoop net move along the axial direction of the sedimentation tank 1, thereby increasing the range of the scoop net to scoop up the floating oil and further improving the treatment efficiency.

[0051] Furthermore, it also includes:

[0052] The collecting box 3 defines a collecting cavity inside and has an open end at the top. The collecting box 3 is arranged at one side of the sedimentation tank 1. When the floating oil flows out of the sedimentation tank 1 along the first direction, the floating oil can flow into the collecting cavity through the open end.

[0053] In addition, in the present technical solution, the second driving member and the scoop net cooperate to provide a first-direction force acting on the floating oil, so that the floating oil can pass out of the sedimentation tank 1 along the first direction. By arranging the collecting box 3 along the first direction, when the floating oil passes out of the sedimentation tank 1, it directly enters the collecting chamber along the opening end, thereby improving the sedimentation separation treatment efficiency.

[0054] Furthermore, it also includes:

[0055] At least one pair of hooks 4 is configured such that the hook ends are connected to one side of the side wall of the sedimentation tank 1 , and the other end away from the hook ends is welded to the collection box 3 .

[0056] The collecting box 3 is fixed to one side of the sedimentation tank 1 by means of a hook 4 welded on the collecting box 3, and the opening at the top of the collecting box 3 faces upwards. After the scoop net is switched from the first position to the second position, the floating oil directly falls into the collecting box 3, completing the collection of the floating oil.

[0057] Furthermore, the second driving member includes:

[0058] The stepper motor 5 is fixedly connected to the moving seat 2. The output shaft of the stepper motor 5 is fixedly connected to a rotating rod 6. The rotating rod 6 is mounted above the sedimentation tank 1 and is connected to the sedimentation tank 1. A rotating ring 7 is fixedly mounted on the rotating rod 6. The side wall of the rotating ring 7 is fixedly connected to the scoop net.

[0059] A first top column 8 is fixedly connected to the movable base 2 and is configured to abut against the scoop net when in the first position;

[0060] The second top column 9 is fixedly connected to the movable base 2 and is configured to abut against the scoop net when in the second position.

[0061] The stepper motor 5 is used to drive the rotating rod 6 to rotate, and the rotating rod 6 rotates the rotating ring 7, and the scoop net is rotated to switch between the first position and the second position through the rotating ring 7. In addition, the first top column 8 and the second top column 9 fixedly connected to the moving base 2 are used. After the stepper motor 5 stops driving, the driving effect on the rotating rod 6 is lost, and the rotating rod 6 will rotate under the influence of external force. Therefore, when the moving base 2 drives the scoop net to move to scoop up the floating oil, the first top column 8 can be against the scoop net, so that the scoop net is in the first position, ensuring the stability of scooping the floating oil. When collecting the floating oil, the stepper motor 5 is started again to rotate the scoop net. After the scoop net moves to the second position, it is against the second top column 9, providing a reverse force to the scoop net, so that the floating oil passes out of the sedimentation tank 1 under inertia.

[0062] Furthermore, a pair (two) of the moving seats 2 are provided, the stepping motor 5 is fixedly connected to any one of the moving seats 2 , and one end of the rotating rod 6 away from the stepping motor 5 is connected to the other moving seat 2 .

[0063] A pair (two) of movable seats 2 are provided and arranged relatively on both sides of the top of the sedimentation tank 1, a rotating rod 6 is set between the pair of movable seats 2, and one end of the rotating rod 6 is driven by a stepper motor 5, and the other end is connected to the connected movable seat 2, so as to ensure the effect of the scoop net to scoop up floating oil.

[0064] Further, the scoop net includes:

[0065] A pair of support plates 10 are fixed to the swivel 7 and symmetrically distributed at both ends of the swivel 7 along the center of the swivel 7;

[0066] The filter screen 11 is arranged between the pair of support plates 10 , and two ends thereof are fixedly connected to the pair of support plates 10 .

[0067] By distributing a pair of support plates 10 on the swivel 7, and arranging the support plates 10 close to one side of the inner wall of the adjacent sedimentation tank 1, and fixing the filter screen 11 between the pair of support plates 10, the whole scoop net is set on the sedimentation tank 1 to expand the scooping area. It can be understood that when the scoop net is located at the first position or the second position, the support plates 10 abut against the corresponding first top column 8 or second top column 9.

[0068] Furthermore, the first driving member includes:

[0069] A pair of mounting plates 12 are fixedly connected to both sides of the top of the sedimentation tank 1 along the length direction thereof;

[0070] The first screw rod 13 is connected between a pair of mounting plates 12, and a moving seat 2 is threadedly sleeved on the first screw rod 13;

[0071] The driving motor 14 is fixedly connected to any one of the mounting plates 12 , and the output shaft of the driving motor 14 is fixedly connected to one end of the adjacent first screw rod 13 .

[0072] The first screw 13 is driven to rotate by a driving motor 14. A moving seat 2 is threadedly sleeved on the first screw 13. During the rotation of the first screw 13, the moving seat 2 is driven to slide with the sedimentation tank 1, thereby realizing the moving drive of the scoop net.

[0073] Furthermore, since a pair of movable seats 2 are provided, after one of the movable seats 2 is threadedly connected to the first screw rod 13 , the other movable seat 2 is slidably connected to the guide rod 15 fixed to the sedimentation tank 1 , thereby improving the moving stability of the scoop net.

[0074] Furthermore, it also includes:

[0075] The treatment tank 16 is arranged on a side of the sedimentation tank 1 away from the collecting box 3, and a communication port is opened between the middle of the sedimentation tank 1 and the treatment tank 16;

[0076] The valve 17 is slidably fitted in the communication port. A third driving member is provided on the sedimentation tank 1. The driving end of the third driving member is connected to the valve 17 so that the valve 17 can switch the communication port to a connected or blocked state.

[0077] Further, the third driving member includes:

[0078] A pair of bases 18 are fixedly connected to both sides of the sedimentation tank 1. A rotating motor 24 is fixedly connected to the top of the base 18. A second screw 25 is fixedly connected to the output shaft of the rotating motor 24.

[0079] A pair of lifting seats 19 are fixedly connected to both sides of the valve 17, and the pair of lifting seats 19 correspond to the pair of second screw rods 25 one by one, and the lifting seats 19 are threadedly sleeved on the adjacent second screw rods 25;

[0080] The guide rail 20 is fixedly connected to the top of the sedimentation tank 1 along the vertical direction, and the valve 17 is slidably fitted in the guide rail 20 .

[0081] By opening a connecting port in the middle of the sedimentation tank 1, the valve 17 is slidably connected to the connecting port, and the second screw 25 is rotated by the rotating motor 24. The second screw 25 drives the lifting seat 19 to rise and fall relative to the sedimentation tank 1, thereby realizing the lifting and lowering control of the valve 17 along the guide rail 20. After a certain period of sedimentation and stratification in the sedimentation tank 1, the water layer in the middle layer of the original liquid is passed into the treatment tank 16 by opening the valve 17, so as to carry out the subsequent harmless treatment of the oily sewage sludge.

[0082] Furthermore, it also includes:

[0083] The guide plate 21 is fixedly connected to the inner wall of the bottom end of the sedimentation tank 1 and is configured to form a guide outlet end in the sedimentation tank 1;

[0084] The submersible sewage pump 22 is fixed at the guide outlet end, and the submersible sewage pump 22 has a discharge pipe 23 extending out of the sedimentation tank 1 for discharging oil sludge.

[0085] After the original liquid is precipitated and stratified in the sedimentation tank 1, the oily sludge falls to the bottom of the sedimentation tank 1, and is guided by the guide plate 21 and directly led to the position of the submersible sewage pump 22, effectively improving the treatment efficiency of the precipitated and separated oily sewage sludge original liquid.

[0086] The working process of this embodiment is as follows:

[0087] After the stock solution is passed into the sedimentation tank 1, it is allowed to stand for a period of time to allow the stock solution to produce oil-water-mud stratification from top to bottom. The stepper motor 5 is started to rotate the scoop net to the first position and then closed. At the same time, the drive motor 14 is started. Under the support of the first top column 8, the scoop net is kept in the first position and moves along the length direction of the sedimentation tank 1 to scoop up the floating oil on the top layer. Then the drive motor 14 is reversed to move the moving seat 2 and the scoop net toward the collection box 3. During the movement, the stepper motor 5 is started to lift the scoop net to prevent the scooped floating oil from leaking from the scoop net. After moving to the end of the sedimentation tank 1, the stepper motor 5 continues to rotate, driving the scoop net to rotate to the second position, and the second top column 9 is used to resist the scoop net. Under inertia, the floating oil passes through the sedimentation tank 1 and falls into the collection box 3, thereby realizing efficient recovery of the floating oil layer; the second screw 25 is rotated by the rotating motor 24 to lift the lifting seat 19 and the valve 17, so that the middle water layer passes into the treatment tank 16; and the sludge moves toward the submersible sewage pump 22 under the action of the guide plate 21, and finally passes through the sedimentation tank 1 by the submersible sewage pump 22, thereby completing the efficient sedimentation and separation treatment of the raw liquid.

[0088] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0089] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. An oily sewage sludge separation device, characterized in that: include: Sedimentation tank (1); a scoop net movably fitted to the top of the sedimentation tank (1) and having a switchable first position and a second position, wherein when in the first position, the scoop net extends into the top of the sedimentation tank (1) to scoop up floating oil, and when in the second position, the floating oil can flow out of the sedimentation tank (1) along a first direction; A movable seat (2) is arranged on one side of the top end of the sedimentation tank (1); a first driving member is provided on the sedimentation tank (1); a driving end of the first driving member is connected to the movable seat (2) so that the movable seat (2) slides relative to the sedimentation tank (1) along the axis direction of the sedimentation tank (1); A second driving member is arranged on the movable seat (2), and a driving end of the second driving member is connected to the scoop net so that the scoop net can be switched between the first position and the second position, wherein the scoop net cooperates with the second driving member to provide a first direction force acting on the floating oil.

2. The oily sewage sludge separation device according to claim 1 is characterized in that: Also includes: A collecting box (3) defines a collecting chamber inside and has an open end at the top. The collecting box (3) is arranged on one side of the sedimentation tank (1). When the floating oil flows out of the sedimentation tank (1) along a first direction, the floating oil can flow into the collecting chamber through the open end.

3. The oily sewage sludge separation device according to claim 2 is characterized in that: Also includes: At least one pair of hooks (4) is configured such that the hook ends are connected to one side of the side wall of the sedimentation tank (1), and the other end away from the hook ends is welded to the collection box (3).

4. The oily sewage sludge separation device according to claim 1 is characterized in that: The second driving member comprises: A stepper motor (5) is fixedly connected to the movable seat (2); a rotating rod (6) is fixedly connected to the output shaft of the stepper motor (5); the rotating rod (6) is mounted above the sedimentation tank (1) and is connected to the sedimentation tank (1); a rotating ring (7) is sleeved and fixedly connected to the rotating rod (6); and a side wall surface of the rotating ring (7) is fixedly connected to the scoop net; A first top column (8) is fixedly connected to the movable seat (2) and is configured to abut against the scoop net when in the first position; The second top column (9) is fixedly connected to the movable seat (2) and is configured to abut against the scoop net when in the second position.

5. The oily sewage sludge separation device according to claim 4 is characterized in that: A pair of movable seats (2) are provided, the stepping motor (5) is fixedly connected to any one of the pair of movable seats (2), and one end of the rotating rod (6) away from the stepping motor (5) is connected to the other movable seat (2).

6. The oily sewage sludge separation device according to claim 4 is characterized in that: The scoop net comprises: A pair of support plates (10) are fixedly connected to the rotating ring (7) and are symmetrically distributed at two ends of the rotating ring (7) along the center of the rotating ring (7); The filter screen (11) is arranged between the pair of support plates (10), and the two ends are respectively fixedly connected to the pair of support plates (10).

7. The oily sewage sludge separation device according to claim 1, characterized in that: The first driving member comprises: A pair of mounting plates (12) are fixedly connected to both sides of the top of the sedimentation tank (1) along the length direction thereof; A first screw rod (13) is connected between the pair of mounting plates (12), and the movable seat (2) is threadedly sleeved on the first screw rod (13); The driving motor (14) is fixedly connected to any one of the mounting plates (12), and the output shaft of the driving motor (14) is fixedly connected to one end of the adjacent first screw rod (13).

8. The oily sewage sludge separation device according to claim 2, characterized in that: Also includes: A treatment tank (16) is arranged on a side of the sedimentation tank (1) away from the collection box (3), and a communication port is provided between the middle of the sedimentation tank (1) and the treatment tank (16); The valve (17) is slidably fitted in the communication port. The sedimentation tank (1) is provided with a third driving member, and the driving end of the third driving member is connected to the valve (17), so that the valve (17) can switch the communication port to a connected or blocked state.

9. The oily sewage sludge separation device according to claim 8, characterized in that: The third driving member comprises: A pair of bases (18) are fixedly connected to both sides of the sedimentation tank (1) relative to each other, a rotating motor (24) is fixedly connected to the top of the base (18), and a second screw (25) is fixedly connected to the output shaft of the rotating motor (24); A pair of lifting seats (19) are fixedly connected to both sides of the valve (17), and the pair of lifting seats (19) correspond to a pair of second screw rods (25) one by one, and the lifting seats (19) are threadedly sleeved on adjacent second screw rods (25); The guide rail (20) is fixedly connected to the top of the sedimentation tank (1) in the vertical direction, and the valve (17) is slidably fitted in the guide rail (20).

10. The oily sewage sludge separation device according to claim 1, characterized in that: Also includes: A guide plate (21) is fixedly connected to the inner wall of the bottom end of the sedimentation tank (1) and is configured to form a guide outlet end in the sedimentation tank (1); A submersible sewage pump (22) is fixed at the guide outlet end, and the submersible sewage pump (22) has a discharge pipe (23) extending out of the sedimentation tank (1) for discharging oil sludge.

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