Pretreatment mechanism for wastewater treatment

Abstract

The utility model relates to the technical field of sewage treatment, and discloses a pretreatment mechanism for wastewater treatment, which comprises a water inlet channel, a drainage channel, a sludge channel and a plurality of spiral conveyors, the sludge channel is obliquely provided with a plurality of spiral conveyors, the bottom ends of the spiral conveyors are provided with sludge inlets, and the side surfaces of the top ends of the spiral conveyors are provided with sludge outlets. The device is characterized in that the water inlet channel, the drainage channel and the sludge channel are arranged on the ground in parallel, the ground is provided with a curve channel, the curve channel is communicated with the water inlet channel, the drainage channel and the sludge channel, the curve channel and the sludge channel are provided with inclined planes, the inclined planes are arranged on the bottom surface of the sludge channel, and the motor is arranged at the tail end of the top of the spiral conveyor. Compared with the prior art, the sludge treatment device has the advantages that a certain flow velocity is ensured while the wastewater is deposited, the treatment efficiency is improved, the spiral conveyer is embedded in the deposition area in advance, and the sludge can be directly discharged outwards after the sludge with a certain thickness is formed through deposition.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a pretreatment mechanism for sewage treatment. Background Art

[0002] Wastewater pretreatment refers to a series of physical, chemical or biological treatment processes before wastewater enters the main treatment system. Its purpose is to reduce the pollutant load in the wastewater, protect subsequent treatment equipment from damage, and improve the efficiency of the wastewater treatment system.

[0003] Wastewater often contains solid particles, such as suspended matter and sediment. Larger solid particles can be separated through physical methods, such as screens, grit chambers or cyclones, to reduce pollution and damage to subsequent treatment equipment. Common sedimentation tanks require wastewater to remain in them for a long time to allow the solid particles inside to settle, which has low treatment efficiency. In addition, a sludge layer will form at the bottom of the sedimentation tank, which needs to be lifted up for cleaning. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the traditional wastewater sedimentation tank has low treatment efficiency and needs to be lifted up for sludge cleaning, and a pretreatment mechanism for wastewater treatment is provided.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is as follows: a pretreatment mechanism for wastewater treatment, which includes an inlet channel, a drainage channel, a sludge channel and a screw conveyor, wherein the sludge channel is obliquely installed with a plurality of screw conveyors, the bottom end of the screw conveyor is provided with a sludge inlet, the top side is provided with a sludge outlet, the sludge inlet is arranged on the bottom surface of the sludge channel, and the top end of the screw conveyor is provided with a motor.

[0008] The water inlet channel, drainage channel and sludge channel are arranged in parallel on the ground. The ground is provided with a curved water channel, which is connected with the water inlet channel, drainage channel and sludge channel. The curved water channel and the sludge channel are provided with inclined surfaces to slow down the wastewater flow so that solid particles in the wastewater begin to settle here.

[0009] Furthermore, a mounting groove is provided at the bottom end of the inclined surface, and the sludge inlet is arranged in the mounting groove.

[0010] Furthermore, a first partition wall is provided between the water inlet channel and the drainage channel, and a second partition wall is provided between the drainage channel and the sludge channel.

[0011] Furthermore, the screw conveyor is installed at the bottom of the slope, the sludge inlet opening is arranged upward, and the sludge outlet opening is arranged downward.

[0012] Furthermore, an inspection bridge is provided on the top of the water inlet channel, the drainage channel and the sludge channel, and steps are provided at both ends of the inspection bridge.

[0013] Furthermore, the inspection bridge is located just above the silt channel and a hanger is suspended, a flange at the bottom end of the hanger is connected to an interface meter probe, and a control console is provided at one end of the inspection bridge located outside the silt channel to identify the thickness of the deposited silt layer through the interface meter probe.

[0014] Furthermore, a main shaft is provided inside the screw conveyor, the motor drive is connected to the main shaft, and a spiral belt is provided outside the main shaft.

[0015] 3. Beneficial Effects

[0016] The advantages of the utility model compared with the prior art are:

[0017] 1. While depositing the wastewater, a certain flow rate is maintained to improve the treatment efficiency.

[0018] 2. Pre-bury the screw conveyor in the sedimentation area. When the sedimentation forms a certain thickness of sludge, the sludge can be directly discharged outward, and the sludge removal process does not interfere with the wastewater sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a structural schematic diagram of a pretreatment mechanism for wastewater treatment.

[0020] Figure 2 The present invention is a schematic diagram of the control console structure of a pretreatment mechanism for wastewater treatment.

[0021] Figure 3 The present invention is a structural schematic diagram of an inclined surface of a pretreatment mechanism for wastewater treatment.

[0022] Figure 4 The present invention is a schematic diagram of the structure of an interface instrument probe of a pretreatment mechanism for wastewater treatment.

[0023] As shown in the figure: 1. Ground, 2. Water inlet channel, 3. First partition wall, 4. Drainage channel, 5. Second partition wall, 6. Silt channel, 7. Screw conveyor, 8. Inspection bridge, 9. Hanging rod, 10. Curved channel, 11. Control console, 12. Step ladder, 13. Interface instrument probe, 14. Silt inlet, 15. Motor, 16. Silt outlet, 17. Inclined surface, 18. Mounting groove, 19. Main shaft, 20. Screw belt. DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Embodiment 1

[0026] In conjunction with the accompanying drawings, a pretreatment mechanism for wastewater treatment includes an inlet channel 2, a drainage channel 4, a sludge channel 6 and a screw conveyor 7, wherein the sludge channel 6 is obliquely installed with a plurality of screw conveyors 7, the bottom end of the screw conveyor 7 is provided with a sludge inlet 14, and the top side is provided with a sludge outlet 16, the sludge inlet 14 is arranged on the bottom surface of the sludge channel 6, and the top end of the screw conveyor 7 is provided with a motor 15.

[0027] The water inlet channel 2, the drainage channel 4 and the silt channel 6 are arranged in parallel on the ground 1. The ground 1 is provided with a curved water channel 10. The curved water channel 10 is connected with the water inlet channel 2, the drainage channel 4 and the silt channel 6. The curved water channel 10 and the silt channel 6 are provided with an inclined surface 17. The bottom end of the inclined surface 17 is provided with a mounting groove 18. The silt inlet 14 is arranged in the mounting groove 18.

[0028] When the wastewater enters the inlet channel 2, it flows to the curved channel 10 and its flow direction is deflected. Under the guidance of the curved channel 10, it flows into the sludge channel 6. When the wastewater flows to the inclined surface 17, it is affected by its slope and decelerates and flows back. Since the density of solid particles in the wastewater is relatively high compared to water, the inertia is large and the fluidity is poor, when the wastewater decelerates and flows back, the solid particles flow back slowly and begin to settle at the bottom of the inclined surface 17 to form sludge. When the wastewater in the sludge channel 6 flows back again, it will collide and converge with the subsequent flow from the inlet channel 2 at the drainage channel 4, and then be discharged through the drainage channel 4. The solid particles in the flow from the inlet channel 2 have a large movement inertia, and the water flow convergence has a small change in their movement speed. The solid particles will continue to flow into the sludge channel 6 for deposition, while the wastewater from which the solid particles have been preliminarily separated will continue to be discharged from the drainage channel 4.

[0029] A first partition wall 3 is provided between the water inlet channel 2 and the drainage channel 4 , and a second partition wall 5 is provided between the drainage channel 4 and the sludge channel 6 .

[0030] The screw conveyor 7 is buried and installed at the bottom of the slope 17, the sludge inlet 14 is opened upward, and the sludge outlet 16 is opened downward. A main shaft 19 is provided inside the screw conveyor 7, and the motor 15 is driven and connected to the main shaft 19. A screw belt 20 is provided on the outside of the main shaft 19.

[0031] Solid particles will begin to settle above the opening of the sludge inlet 14 and eventually form sludge. When the sludge reaches a certain thickness, the motor 15 can be started to pump the sludge out from the bottom of the sludge channel 6.

[0032] Embodiment 2

[0033] In conjunction with the accompanying drawings, an inspection bridge 8 is provided on the top of the water inlet channel 2, the drainage channel 4 and the sludge channel 6, and steps 12 are provided at both ends of the inspection bridge 8.

[0034] The inspection bridge 8 is located just above the sludge channel 6 and a suspension rod 9 is suspended thereon. An interface instrument probe 13 is connected to a flange at the bottom end of the suspension rod 9 . A control console 11 is provided at one end of the inspection bridge 8 located outside the sludge channel 6 .

[0035] The interface meter probe 13 can determine the relative distance between interfaces of different substances by ultrasonic scanning. The control console 11 determines the thickness of the sludge layer based on the data returned by the interface meter probe 13 and turns on or off the motor 15 according to the thickness of the sludge layer.

[0036] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A pretreatment mechanism for wastewater treatment, comprising an inlet channel (2), a drainage channel (4), a sludge channel (6) and a screw conveyor (7), wherein the sludge channel (6) is provided with a plurality of screw conveyors (7) installed obliquely, the bottom end of the screw conveyor (7) is provided with a sludge inlet (14), and the top side is provided with a sludge outlet (16), the sludge inlet (14) is arranged on the bottom surface of the sludge channel (6), and the top end of the screw conveyor (7) is provided with a motor (15), characterized in that: The water inlet channel (2), the drainage channel (4) and the sludge channel (6) are arranged in parallel on the ground (1); the ground (1) is provided with a curved water channel (10); the curved water channel (10) is connected with the water inlet channel (2), the drainage channel (4) and the sludge channel (6); the curved water channel (10) and the sludge channel (6) are provided with inclined surfaces (17).

2. A pretreatment mechanism for wastewater treatment according to claim 1, characterized in that: A mounting groove (18) is provided at the bottom end of the inclined surface (17), and the sludge inlet (14) is arranged in the mounting groove (18).

3. A pretreatment mechanism for wastewater treatment according to claim 1, characterized in that: A first partition wall (3) is provided between the water inlet channel (2) and the drainage channel (4), and a second partition wall (5) is provided between the drainage channel (4) and the sludge channel (6).

4. A pretreatment mechanism for wastewater treatment according to claim 1, characterized in that: The screw conveyor (7) is buried and installed at the bottom of the slope (17), the sludge inlet (14) is opened upward, and the sludge outlet (16) is opened downward.

5. A pretreatment mechanism for wastewater treatment according to claim 1, characterized in that: An inspection bridge (8) is provided on the top of the water inlet channel (2), the drainage channel (4) and the sludge channel (6), and steps (12) are provided at both ends of the inspection bridge (8).

6. A pretreatment mechanism for wastewater treatment according to claim 5, characterized in that: The inspection bridge (8) is located directly above the sludge channel (6) and is provided with a suspension rod (9). The bottom flange of the suspension rod (9) is connected to an interface instrument probe (13). The inspection bridge (8) is provided with a control console (11) at one end outside the sludge channel (6).

7. A pretreatment mechanism for wastewater treatment according to claim 1, characterized in that: A main shaft (19) is arranged inside the screw conveyor (7), the motor (15) is connected to the main shaft (19) for driving, and a spiral belt (20) is arranged outside the main shaft (19).

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