Oily sewage treatment device and oily sewage treatment method

Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to an oily sewage treatment device which comprises a sewage pool, water outlets are formed in the two ends of the sewage pool, two treatment plates are arranged in the sewage pool, a rotating shaft is fixedly inserted into the middle sections of the two treatment plates, and rotating discs are fixedly connected to the two ends of the rotating shaft. The two ends of the rotating shaft are further rotationally connected with supporting plates, a pressing shaft is arranged on one side of each supporting plate, the lower end of each pressing shaft abuts against the side edge of the rotating disc, and a first connecting plate is fixedly connected between the upper ends of the two supporting plates. Meanwhile, the lifting mechanism is arranged beside the sewage pool, in the reaction process of oil dirt and an oil dirt flocculating agent, the treatment plate plays a role in bearing flocculate, the flocculate can be directly filtered and separated from sewage through the lifting mechanism, and after flocculation is finished, the flocculate is directly filtered and cleaned through the treatment plate used for mixing before.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and in particular relates to an oily sewage treatment device and an oily sewage treatment method. Background Art

[0002] Wastewater treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemicals, environmental protection, urban landscape, medical care, and catering. Whether it is industrial wastewater or domestic wastewater, oil pollution accounts for a large proportion of wastewater, so the treatment of oil pollution is called an important part of wastewater treatment. Among them, oil wastewater treatment is generally divided into primary treatment and secondary treatment. Primary treatment is to separate free oil, dispersed oil and oil sludge from water and emulsified bead. Secondary treatment is to destroy the oil-water emulsion and separate the remaining oil.

[0003] In the prior art, when treating oil pollution, the reaction and separation of the oil pollution are carried out in two treatment tanks respectively. Multiple treatment tanks are needed to treat the oil pollution. This treatment method occupies a large space, which will make the operating space required for the entire sewage treatment plant larger. Summary of the invention

[0004] Based on the technical problems existing in the background technology, the present invention proposes an oily wastewater treatment device and an oily wastewater treatment method.

[0005] The present invention provides an oily wastewater treatment device, comprising a wastewater pool, both ends of which are provided with water outlets, two treatment plates are provided in the wastewater pool, a rotating shaft is fixedly inserted in the middle sections of the two treatment plates, both ends of the rotating shaft are fixedly connected with a rotating disk, both ends of the rotating shaft are also rotatably connected with a support plate, a pressing shaft is provided on one side of the support plate, the lower end of the pressing shaft abuts against the side of the rotating disk, a first connecting plate is fixedly connected between the upper ends of the two support plates, and the two first connecting plates are fixedly connected together through a second connecting plate;

[0006] The two ends of the first connecting plate are located above the supporting plate and are provided with a pressing mechanism, and the pressing mechanism is used to press the pressing shaft up and down;

[0007] The second connecting plate and the first connecting plate are provided with a driving mechanism, the driving mechanism is connected with four intermittent mechanisms, the driving mechanism comprises two rotating rods, one end of each of the two rotating rods is provided with a worm;

[0008] Four lifting mechanisms are arranged on the upper boundary of the sewage pool, and the lifting mechanisms include threaded rods.

[0009] Preferably, the pressing mechanism includes a rotating block, the upper end of the support plate is fixedly sleeved with a connecting plate close to the first connecting plate, a side block is provided on one side of the connecting plate, the pressing shaft is slidably inserted on the side block, the upper end of the pressing shaft is fixedly connected with a pressing block, the pressing block is arranged above the side block and a spring is fixedly connected to the lower surface, the spring is connected between the side block and the pressing block, the rotating block is rotatably installed on the first connecting plate, and one side is pressed against the upper surface of the pressing block through a convex shaft, and the rotating block is connected to the driving mechanism.

[0010] Preferably, a plurality of pressing grooves are provided in an annular shape on the surface of the turntable, and the lower end of the pressing shaft is pressed against the pressing groove.

[0011] Preferably, the driving mechanism also includes a first motor, which is fixedly mounted on the second connecting plate, and the two driving ends of the first motor are respectively fixedly connected to the ends of the two rotating rods away from the worm gear. A linkage shaft is rotatably arranged on the first connecting plate, and a worm wheel is fixedly sleeved on the linkage shaft for use with the worm gear. The worm gear is meshingly connected to the worm wheel. The linkage shaft is rotatably mounted on the first connecting plate through a mounting block, and the end of the linkage shaft is fixedly connected to the rotating block.

[0012] Preferably, the lifting mechanism also includes a first gear, a second gear, and a third gear. A second motor is fixedly connected to the sewage pool via a fixed frame. The first gear, the second gear, and the third gear are all rotatably installed on the sewage pool, and the first gear is meshed with the second gear, and the second gear is meshed with the third gear. The driving end of the second motor is fixedly connected to the third gear, the threaded rod is fixedly connected to the first gear, and a threaded sleeve is provided at the end of the first connecting plate, and the threaded sleeve is threadedly sleeved on the threaded rod.

[0013] Preferably, a groove is provided on the processing plate, and a plurality of holes are arranged in an array on the surface of the groove.

[0014] Preferably, a rotation groove is provided at the lower end of the support plate, and the rotation shaft passes through the rotation groove.

[0015] The present invention also discloses a method for treating oily wastewater, comprising the following steps:

[0016] Step S1: The sewage containing oil pollution to be treated is transported from the outlet at one end to the sewage pool, and an oil pollution flocculant having a flocculating effect on the oil pollution is added to the sewage pool, and then the pressing mechanism is activated by the driving mechanism to make the two treatment plates rotate in the sewage pool, so that the oil pollution flocculant and the sewage are fully mixed, so that the oil pollution part is fully flocculated and agglomerated;

[0017] Step S2: The first motor in the driving mechanism drives the connected rotating rod to rotate through the two driving ends respectively, and the worm and the worm wheel at one end of the rotating rod cooperate with each other, so that the rotational mechanical process in the driving mechanism acts on the pressing mechanism;

[0018] Step S3: The driving mechanism drives the rotating block to rotate through the linkage shaft. The rotating block presses the pressing block downward during the rotation process. The pressing force causes the turntable to rotate. Under the elastic force of the spring, the pressing shaft will move up and reset. The continuous rotation of the turntable will drive the processing plate to rotate continuously through the rotating shaft. The rotating processing plate fully mixes the oil flocculant and the sewage.

[0019] Step S4: After the oil flocculant and sewage are mixed, the two treatment plates are rotated to a horizontal state, and the lifting mechanism realizes the lowering action of the treatment plates, and the two treatment plates are lowered to the bottom of the sewage pool. The treatment plates wait at the bottom for 10-30 minutes;

[0020] Step S5: After the oil in the sewage is flocculated, it will be suspended in the sewage. The lifting mechanism is started again, and the lifting mechanism moves the treatment plate upward. The two horizontally arranged treatment plates can form a plate surface. During the upward movement of the plate surface, the flocculated oil can be collected. The grooves at the concave position can effectively collect the flocculates.

[0021] Step S6: Finally, the lifting mechanism raises the treatment plate to the upper surface of the sewage pool, and the staff directly scrapes the flocculants off the surface of the treatment plate, and the treated sewage is transported out from the outlet on the other side.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention realizes the rotation effect of the two treatment plates in the sewage pool by driving the pressing mechanism through the driving mechanism, so that the oil in the sewage is fully contacted with the oil flocculant to achieve the oil flocculation effect, and then the oil in the sewage can be separated from it, achieving the reaction treatment effect of the sewage;

[0024] 2. The present invention also provides a lifting mechanism installed at the side of the sewage pool. During the reaction between the oil pollution and the oil pollution coagulant, the treatment plate plays the role of carrying the flocculants. The flocculants can be directly filtered and separated from the sewage through the lifting mechanism. After the flocculation is completed, it is directly filtered and cleaned through the treatment plate previously used for mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of an oily wastewater treatment device proposed by the present invention;

[0026] Figure 2This is a schematic diagram of the internal structure of an oily wastewater treatment device proposed by the present invention;

[0027] Figure 3 This is a schematic diagram of the top plan structure of an oily wastewater treatment device proposed by the present invention;

[0028] Figure 4 It is a structural schematic diagram of the lifting mechanism;

[0029] Figure 5 for Figure 4 A magnified view of the structure at center.

[0030] In the figure: 1 sewage tank, 2 water outlet, 3 threaded rod, 4 support plate, 5 pressing shaft, 6 first connecting plate, 7 second connecting plate, 8 first motor, 9 rotating rod, 10 worm, 11 threaded sleeve, 12 linkage shaft, 13 worm gear, 14 fixing frame, 15 second motor, 16 first gear, 17 second gear, 18 third gear, 19 processing plate, 20 groove, 21 hole, 22 rotating shaft, 23 turntable, 24 rotating block, 25 pressing block, 26 spring, 27 side block, 28 connecting plate, 29 mounting block. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-Figure 5 , an oily wastewater treatment device, comprising a sewage pool 1, both ends of the sewage pool 1 are provided with water outlets 2, two treatment plates 19 are arranged in the sewage pool 1, a rotating shaft 22 is fixedly inserted in the middle section of the two treatment plates 19, both ends of the rotating shaft 22 are fixedly connected with a rotating disk 23, both ends of the rotating shaft 22 are also rotatably connected with a support plate 4, a pressing shaft 5 is arranged on one side of the support plate 4, the lower end of the pressing shaft 5 is against the side of the rotating disk 23, a first connecting plate 6 is fixedly connected between the upper ends of the two support plates 4, and the two first connecting plates 6 are fixedly connected together through a second connecting plate 7;

[0033] A pressing mechanism is provided at both ends of the first connecting plate 6, which is located above the supporting plate 4, and is used to realize the up and down pressing of the pressing shaft 5; a driving mechanism is provided on the second connecting plate 7 and the first connecting plate 6, and the driving mechanism is connected with four intermittent mechanisms, and the driving mechanism includes two rotating rods 9, and a worm 10 is provided at one end of the two rotating rods 9; four lifting mechanisms are provided on the upper end boundary of the sewage pool 1, and the lifting mechanism includes a threaded rod 3.

[0034] The pressing mechanism includes a rotating block 24, a connecting plate 28 is fixedly sleeved at the upper end of the support plate 4 close to the position of the first connecting plate 6, a side block 27 is arranged on one side of the connecting plate 28, a pressing shaft 5 is slidably inserted on the side block 27, a pressing block 25 is fixedly connected to the upper end of the pressing shaft 5, the pressing block 25 is arranged above the side block 27 and a spring 26 is fixedly connected to the lower surface, the spring 26 is connected between the side block 27 and the pressing block 25, the rotating block 24 is rotatably installed on the first connecting plate 6, and one side is connected by a convex shaft The rotating block 24 is pressed against the upper surface of the pressing block 25, and the rotating block 24 is connected to the driving mechanism. Under the action of the driving mechanism, the rotating block 24 will rotate, and as the rotating block 24 rotates, it will continuously contact the pressing block 25. A spring 26 is connected between the pressing block 25 and the connecting plate 28. Under the pressing action of the convex shaft, the pressing shaft 5 will be continuously pressed downward, and at the same time, the pressing shaft 5 is reset under the elastic force of the spring 26. As the pressing shaft 5 moves up and down, it can continuously press the turntable 23 from one side, thereby realizing the rotation of the turntable 23.

[0035] The surface of the turntable 23 is provided with a plurality of pressing grooves in an annular shape, and the lower end of the pressing shaft 5 is pressed against the pressing groove. When the pressing shaft 5 applies a force downward to the pressing groove, the turntable 23 is rotated, thereby driving the rotating shaft 22 to rotate.

[0036] The driving mechanism also includes a first motor 8, which is fixedly mounted on the second connecting plate 7. The two driving ends of the first motor 8 are respectively fixedly connected to one end of the two rotating rods 9 away from the worm 10. A linkage shaft 12 is rotatably arranged on the first connecting plate 6. A worm wheel 13 is fixedly sleeved on the linkage shaft 12 for use with the worm 10. The worm 10 is meshingly connected with the worm wheel 13. The linkage shaft 12 is rotatably mounted on the first connecting plate 6 through a mounting block 29. The end of the linkage shaft 12 is fixedly connected to the rotating block 24. When the driving end of the first motor 8 drives the rotating rod 9 to rotate, the worm wheel 13 can be rotated as the worm 10 rotates, and then the linkage shaft 12 drives the rotating block 24 fixedly connected at the end to rotate, thereby achieving a pressing effect on the turntable 23.

[0037] The lifting mechanism also includes a first gear 16, a second gear 17, and a third gear 18. The sewage pool 1 is fixedly connected to a second motor 15 through a fixing frame 14. The first gear 16, the second gear 17, and the third gear 18 are all rotatably mounted on the sewage pool 1, and the first gear 16 and the second gear 17 are meshed with each other, and the second gear 17 and the third gear 18 are meshed with each other. The driving end of the second motor 15 is fixedly connected to the third gear 18, and the threaded rod 3 is fixedly connected to the first gear 16. A threaded sleeve 11 is provided at the end of the first connecting plate 6, and the threaded sleeve 11 is threadedly sleeved on the threaded rod 3. The second motor 15 can drive the third gear 18 to rotate through the driving end, and the third gear 18 drives the second gear 17 to rotate. The second gear 17 drives the first gear 16 to rotate, and the first gear 16 can drive the threaded rod 3 to rotate. As the threaded rod 3 rotates, the threaded sleeve 11 connected by the thread can move up and down, thereby driving the first connecting plate 6 to move up and down, and the first connecting plate 6 drives the support plate 4 and the processing plate 19 to move up and down.

[0038] A groove 20 is provided on the processing plate 19, and a plurality of holes 21 are arranged in an array on the surface of the groove 20. When the processing plate 19 rotates, the liquid part can smoothly pass through the holes 21, while the flocculants will not pass through the holes 21 when processing the flocculated oil pollution.

[0039] A method for treating oily wastewater using the above-mentioned oily wastewater treatment device comprises the following steps:

[0040] Step S1: The sewage containing oil pollution to be treated is transported from the outlet 2 at one end to the sewage pool 1, and an oil pollution flocculant having a flocculating effect on the oil pollution is delivered to the sewage pool 1. Then, the pressing mechanism is activated by the driving mechanism, so that the two treatment plates 19 rotate in the sewage pool 1, and the oil pollution flocculant is fully mixed with the sewage, so that the oil pollution part is fully flocculated and agglomerated;

[0041] Step S2: The first motor 8 in the driving mechanism drives the connected rotating rod 9 to rotate through the two driving ends respectively, and the worm 10 at one end of the rotating rod 9 is meshed with the worm wheel 13. With the rotation of the rotating rod 9, the worm wheel 13 can be rotated, and the worm wheel 13 drives the linkage shaft 12 fixedly connected thereto to rotate, so that the rotational mechanical process in the driving mechanism acts on the pressing mechanism;

[0042] Step S3: The driving mechanism drives the rotating block 24 to rotate through the linkage shaft 12. During the rotation of the rotating block 24, the convex shaft on one side will continuously contact the pressing block 25 and press the pressing block 25 downward during the rotation. Pressing the pressing block 25 downward will drive the connected pressing shaft 5 to move downward. The lower end of the pressing shaft 5 abuts against the pressing groove of the rotating disk 23 and presses downward. The pressing force will cause the rotating disk 23 to rotate. Under the elastic force of the spring 26, the pressing shaft 5 will move up and reset. As the pressing shaft 5 continuously presses the rotating disk 23 downward, the rotating disk 23 continuously rotates and drives the processing plate 19 to continuously rotate through the rotating shaft 22. The rotating processing plate 19 fully mixes the oil flocculant and the sewage.

[0043] Step S4: After the oil flocculant is mixed with the sewage, the two treatment plates 19 are rotated to a horizontal state, and the lifting mechanism realizes the lowering action of the treatment plate 19. The second motor 15 drives the third gear 18 to rotate through the driving end, the third gear 18 drives the second gear 17 to rotate, the second gear 17 drives the first gear 16 to rotate, the first gear 16 drives the threaded rod 3 to rotate, and the threaded sleeve 11 at the end of the first connecting plate 6 is threadedly sleeved on the threaded rod 3. With the rotation of the threaded rod 3, the first connecting plate 6 can be lowered. The first connecting plate 6 drives the treatment plate 19 to descend through the support plate 4, and the two treatment plates 19 are lowered to the bottom position of the sewage pool 1. The treatment plates 19 wait at the bottom for 10-30 minutes;

[0044] Step S5: After the oil in the sewage is flocculated, it will be suspended in the sewage. The lifting mechanism is started again, and the lifting mechanism moves the treatment plate 19 upward. The two horizontally arranged treatment plates 19 can form a plate surface. During the upward movement of the plate surface, the flocculated oil can be collected. The groove 20 at the concave position can effectively collect the flocculates.

[0045] Step S6: Finally, the lifting mechanism raises the treatment plate 19 to the upper surface of the sewage pool 1, and the staff directly scrapes the flocculants off the surface of the treatment plate 19, and the treated sewage is transported out from the outlet 2 on the other side.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An oily wastewater treatment device, comprising a wastewater tank (1), characterized in that: Both ends of the sewage pool (1) are provided with water outlets (2), and two treatment plates (19) are arranged in the sewage pool (1), and a rotating shaft (22) is fixedly inserted in the middle section of the two treatment plates (19), and both ends of the rotating shaft (22) are fixedly connected to a rotating disk (23), and both ends of the rotating shaft (22) are also rotatably connected to a support plate (4), and a pressing shaft (5) is provided on one side of the support plate (4), and the lower end of the pressing shaft (5) is against the side of the rotating disk (23), and a first connecting plate (6) is fixedly connected between the upper ends of the two support plates (4), and the two first connecting plates (6) are fixedly connected together through a second connecting plate (7); Both ends of the first connecting plate (6) are located above the supporting plate (4) and are provided with a pressing mechanism, the pressing mechanism being used to achieve up and down pressing of the pressing shaft (5); The second connecting plate (7) and the first connecting plate (6) are provided with a driving mechanism, the driving mechanism being connected to the four intermittent mechanisms, the driving mechanism comprising two rotating rods (9), one end of each of the two rotating rods (9) being provided with a worm (10); Four lifting mechanisms are arranged on the upper boundary of the sewage pool (1), and the lifting mechanisms include threaded rods (3).

2. The oily wastewater treatment device according to claim 1 is characterized in that: The pressing mechanism comprises a rotating block (24), a connecting plate (28) is fixedly sleeved at the upper end of the supporting plate (4) close to the position of the first connecting plate (6), a side block (27) is arranged on one side of the connecting plate (28), the pressing shaft (5) is slidably inserted on the side block (27), the upper end of the pressing shaft (5) is fixedly connected with a pressing block (25), the pressing block (25) is arranged above the side block (27) and a spring (26) is fixedly connected to the lower surface, the spring (26) is connected between the side block (27) and the pressing block (25), the rotating block (24) is rotatably mounted on the first connecting plate (6), and one side is pressed against the upper surface of the pressing block (25) through a convex shaft, and the rotating block (24) is connected to the driving mechanism.

3. The oily wastewater treatment device according to claim 1 is characterized in that: The surface of the rotating disk (23) is provided with a plurality of pressing grooves in an annular shape, and the lower end of the pressing shaft (5) abuts against the pressing groove.

4. The oily wastewater treatment device according to claim 2 is characterized in that: The driving mechanism further comprises a first motor (8), the first motor (8) being fixedly mounted on the second connecting plate (7), the two driving ends of the first motor (8) being fixedly connected to one end of two rotating rods (9) away from the worm (10), the first connecting plate (6) being rotatably provided with a linkage shaft (12), the linkage shaft (12) being fixedly sleeved with a worm wheel (13) for use with the worm (10), the worm (10) being meshingly connected with the worm wheel (13), the linkage shaft (12) being rotatably mounted on the first connecting plate (6) via a mounting block (29), the end of the linkage shaft (12) being fixedly connected to a rotating block (24).

5. The oily wastewater treatment device according to claim 1, characterized in that: The lifting mechanism further comprises a first gear (16), a second gear (17) and a third gear (18); a second motor (15) is fixedly connected to the sewage tank (1) via a fixing frame (14); the first gear (16), the second gear (17) and the third gear (18) are all rotatably mounted on the sewage tank (1); the first gear (16) and the second gear (17) are meshed with each other; the second gear (17) and the third gear (18) are meshed with each other; a driving end of the second motor (15) is fixedly connected to the third gear (18); the threaded rod (3) is fixedly connected to the first gear (16); a threaded sleeve (11) is provided at the end of the first connecting plate (6); and the threaded sleeve (11) is threadedly sleeved on the threaded rod (3).

6. The oily wastewater treatment device according to claim 1, characterized in that: The processing plate (19) is provided with a groove (20), and a plurality of holes (21) are arranged in an array on the surface of the groove (20).

7. The oily wastewater treatment device according to claim 1, characterized in that: The lower end of the support plate (4) is provided with a rotation groove, and the rotation shaft (22) is arranged through the rotation groove.

8. A method for treating oily wastewater according to an oily wastewater treatment device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1: The sewage containing oily dirt to be treated is transported from the water outlet (2) at one end to the sewage pool (1), and an oily dirt flocculant having a flocculating effect on the oily dirt is delivered into the sewage pool (1). Then, the pressing mechanism is activated by the driving mechanism, so that the two treatment plates (19) rotate in the sewage pool (1), and the oily dirt flocculant is fully mixed with the sewage, so that the oily dirt is fully flocculated and agglomerated; Step S2: the first motor (8) in the driving mechanism drives the connected rotating rod (9) to rotate through the two driving ends respectively, and the worm (10) and the worm wheel (13) at one end of the rotating rod (9) cooperate with each other, so that the rotational mechanical process in the driving mechanism acts on the pressing mechanism; Step S3: The driving mechanism drives the rotating block (24) to rotate via the linkage shaft (12). The rotating block (24) presses the pressing block (25) downward during the rotation process. The pressing force causes the rotating disk (23) to rotate. Under the elastic force of the spring (26), the pressing shaft (5) moves upward and resets. The rotating disk (23) continuously rotates, which drives the processing plate (19) to continuously rotate via the rotating shaft (22). The rotating processing plate (19) fully mixes the oil flocculant and the sewage. Step S4: After the oil flocculant and the sewage are mixed, the two treatment plates (19) are rotated to a horizontal state, and the lifting mechanism realizes the lowering action of the treatment plates (19), and the two treatment plates (19) are lowered to the bottom position of the sewage pool (1), and the treatment plates (19) wait at the bottom for 10-30 minutes; Step S5: After the oil in the sewage is flocculated, it will be suspended in the sewage, and the lifting mechanism is started again, and the lifting mechanism moves the processing plate (19) upward. The two horizontally arranged processing plates (19) can form a plate surface. During the upward movement of the plate surface, the flocculated oil can be collected, and the groove (20) at the concave position can effectively collect the flocculated material; Step S6: Finally, the lifting mechanism raises the treatment plate (19) to the upper surface of the sewage pool (1), and the staff directly scrapes the flocculants off the surface of the treatment plate (19), and the treated sewage is transported out from the outlet (2) on the other side.

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