Novel inclined plate sedimentation tank

Abstract

The utility model discloses a novel inclined plate sedimentation tank which comprises a tank body provided with a first end and a second end which are opposite to each other; the water distribution channel is arranged in the tank body, water distribution holes are uniformly distributed in the bottom of the water distribution channel, and a guide plate is fixedly arranged below the water distribution channel; the water collecting tank is arranged at the second end in the tank body; the inclined plates are fixedly arranged in the pool body at equal intervals and distributed on the two sides of the water distribution channel, and the height of the bottoms of the inclined plates is larger than that of the bottom of the water distribution channel; the sludge hopper is arranged at the bottom of the tank body and is positioned below the inclined plate; the water collecting tanks are symmetrically arranged on the two sides of the water distribution channel and located above the inclined plate, effluent weirs are arranged on the two sides of each water collecting tank respectively, and the water collecting tanks are communicated with the water collecting tank; and the backwashing mechanism is arranged in the tank body and is positioned below the inclined plate. The inclined plate sedimentation tank disclosed by the utility model is uniform in water distribution and good in sewage treatment effect.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a novel inclined plate sedimentation tank. Background Art

[0002] In the process of oil extraction, a large amount of drilling waste fluid will be generated. The drilling waste fluid contains oily sewage sludge. Direct discharge will cause environmental pollution, so it needs to be treated. The inflow area structure of the existing inclined plate sedimentation tank allows sewage to enter from one end of the sedimentation tank, and the water distribution of the inlet is uneven, resulting in an increase in the amount of mud per unit area near the water inlet of the traditional (inclined plate) inclined tube sedimentation tank, and the (inclined plate) inclined tube is prone to blockage or mud leakage; if the mud is not discharged smoothly, it is very easy to cause mud backflow, blockage and other phenomena; resulting in deterioration of the effluent water quality. For this reason, a new inclined plate sedimentation tank with a more reasonable water distribution structure is proposed to improve the treatment effect of drilling waste fluid. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a new inclined plate sedimentation tank with uniform water distribution and good sewage treatment effect.

[0004] The utility model provides a novel inclined plate sedimentation tank, comprising:

[0005] a cell body having opposing first and second ends;

[0006] A water distribution channel is arranged in the pool body along the first end to the second end, the bottom of the water distribution channel is evenly distributed with water distribution holes, and a guide plate is fixedly arranged below the water distribution channel along the first end to the second end, and the guide plate is arranged to be tilted downward from the middle to both sides;

[0007] A water collecting tank is arranged at the second end of the tank body;

[0008] Inclined plates are fixedly arranged in the tank body at equal intervals and distributed on both sides of the water distribution channel, and the height of the bottom of the inclined plates is higher than the height of the bottom of the water distribution channel;

[0009] A sludge hopper is arranged at the bottom of the tank body and below the inclined plate;

[0010] A water collecting trough is symmetrically arranged on both sides of the water distribution channel and located above the inclined plate. Water outlet weirs are respectively arranged on both sides of the water collecting trough, and the water collecting trough is connected to the water collecting pool;

[0011] The backwash mechanism is arranged in the pool body and is located below the inclined plate.

[0012] Furthermore, a plurality of legs are symmetrically arranged on both sides of the bottom of the pool body.

[0013] Furthermore, the first end is provided with a water inlet pipe connected to the water distribution channel, and the water inlet pipe is provided with a water inlet valve; the water collecting tank is connected to a water outlet pipe, and the water outlet pipe is provided with a water outlet valve; the bottom of the sludge hopper is connected to a sludge discharge pipe, and the sludge discharge pipe is provided with a sludge discharge valve.

[0014] Furthermore, the angle between the inclined plate and the horizontal direction is 55°-60°; the vertical spacing between adjacent inclined plates is 80-100 mm.

[0015] Furthermore, the inclined plate is made of stainless steel.

[0016] Furthermore, the backwash mechanism includes a backwash air pipe and a backwash water pipe which are fixed side by side in the pool body and below the inclined plate; the top of the backwash air pipe is evenly distributed with air holes along its length, and one end of the backwash air pipe passes through the pool body and is connected to the air compressor; the top of the backwash water pipe is evenly distributed with water holes along its length, and one end of the backwash water pipe passes through the pool body and is connected to the backwash water source through a backwash pump.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] When the inclined plate sedimentation tank of the utility model is used for sewage treatment, the flocculated sewage enters the water distribution channel, and then flows to the entire bottom of the sedimentation tank through the water distribution holes at the bottom of the water distribution channel, thereby achieving uniform water distribution, avoiding the problem of a large amount of mud per unit area in a certain part, effectively improving the sewage treatment performance of the sedimentation tank, and achieving good sewage treatment effect.

[0019] It should be understood that the contents described in the utility model summary are not intended to limit the key or important features of the embodiments of the utility model, nor are they intended to limit the scope of the utility model. Other features of the utility model will become easy to understand through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 It is a structural schematic diagram of the inclined plate sedimentation tank;

[0022] Figure 2 It is a side view structural schematic diagram of the inclined plate sedimentation tank;

[0023] Figure 3 This is a schematic diagram of the top view of the inclined plate sedimentation tank.

[0024] Numbers in the figure: 1, tank body; 2, water distribution channel; 3, water collection tank; 4, inclined plate; 5, sludge hopper; 6, water collection tank; 7, backwash mechanism;

[0025] 11. first end; 12. second end; 13. outrigger;

[0026] 21. water distribution hole; 22. guide plate; 23. water inlet pipe;

[0027] 31. Water outlet pipe;

[0028] 51. Mud discharge pipe;

[0029] 61. Water outlet weir. DETAILED DESCRIPTION

[0030] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] Please refer to Figure 1 to Figure 3 The embodiment of the utility model provides a novel inclined plate sedimentation tank, comprising:

[0033] The cell body 1 has a first end 11 and a second end 12 opposite to each other;

[0034] The water distribution channel 2 is arranged in the tank body 1 along the first end 11 to the second end 12, and water distribution holes 21 are evenly distributed at the bottom of the water distribution channel 2. A guide plate 22 is fixedly arranged below the water distribution channel 2 along the first end 11 to the second end 12, and the guide plate 22 is arranged to be inclined downward from the middle to both sides;

[0035] A water collecting tank 3 is arranged at the second end 12 of the tank body 1;

[0036] Inclined plates 4 are fixedly arranged in the tank body 1 at equal intervals and distributed on both sides of the water distribution channel 2. The height of the bottom of the inclined plates 4 is higher than the height of the bottom of the water distribution channel 2.

[0037] The sludge hopper 5 is arranged at the bottom of the tank body 1 and below the inclined plate 4;

[0038] The water collecting trough 6 is symmetrically arranged on both sides of the water distribution channel 2 and is located above the inclined plate 4. Water outlet weirs 61 are respectively arranged on both sides of the water collecting trough 6. The water collecting trough 6 is connected to the water collecting pool 3.

[0039] The backwash mechanism 7 is arranged in the tank body 1 and is located below the inclined plate 4 .

[0040] In this embodiment, when sewage is treated, the flocculated sewage enters the water distribution channel 2, and then enters the tank body 1 through the water distribution hole 21. The sewage is completely and evenly distributed to the middle and bottom of the tank body 1. The sewage is converted from the horizontal flow rate by 90° downward and its flow rate is instantly reduced. The setting of the water distribution channel 2 relatively increases the water flow area, so that the flow rate of the sewage is rapidly reduced and the water is evenly distributed. The sewage flowing out of the water distribution hole 21 is then diverted by the guide plate 22 to achieve secondary water distribution.

[0041] The sewage entering the tank body 1 rises slowly, and the suspended matter in the sewage is "intercepted" by the inclined plate 4 after "touching" the inclined plate 4. The rising sewage makes the sludge intercepted by the inclined plate 4 more and more, and the specific gravity becomes larger and sinks into the sludge hopper 5, and then the sludge is discharged regularly. The slowly rising supernatant flows into the water collection tank 6 through the outlet weir 61, and the water collection tank 6 collects the supernatant and enters the water collection tank 3 and is discharged to the next process.

[0042] The inclined plate sedimentation tank of the present application has uniform water distribution, good sludge sedimentation effect, high efficiency, and is not easy to run mud. The inclined plate 4 is backwashed regularly through the backwash mechanism 7, which improves the water treatment effect and ensures that the effluent water quality meets the standard.

[0043] In a preferred embodiment, if Figure 1 and Figure 2 As shown, a plurality of legs 13 are symmetrically arranged on both sides of the bottom of the pool body 1 for supporting and fixing the pool body 1 to ensure the stability of the pool body 1 .

[0044] In a preferred embodiment, if Figure 1 and Figure 2 As shown, the first end 11 is provided with a water inlet pipe 21 connected to the water distribution channel 2, and a water inlet valve is provided on the water inlet pipe 21; the water collecting tank 3 is connected to a water outlet pipe 31, and a water outlet valve is provided on the water outlet pipe 31; the bottom of the sludge hopper 5 is connected to a sludge discharge pipe 51, and a sludge discharge valve is provided on the sludge discharge pipe 51.

[0045] In this embodiment, sewage enters the water distribution channel 2 through the water inlet pipe 21, enters the water collection tank 3 after being processed by the inclined plate 4, and then is discharged to the next process through the water outlet pipe 31. After the inclined plate sedimentation tank has been running for a period of time, the mud discharge valve is opened and mud is discharged through the mud discharge pipe 51.

[0046] In a preferred embodiment, the angle between the inclined plate 4 and the horizontal direction is 55°-60°; the vertical spacing between adjacent inclined plates 4 is 80-100 mm.

[0047] In this embodiment, the inclined plates 4 are arranged at large intervals, and the angle of the inclined plates 4 is 55°-60°, which has little interference with the water flow in the tank body 1, forms a small vortex with low intensity, and flows evenly in the tank body 1, greatly increasing the treatment efficiency of the inclined plate sedimentation tank. Preferably, the vertical spacing between adjacent inclined plates is 80 mm, and the angle between the inclined plates and the horizontal direction is 60°.

[0048] In a preferred embodiment, the inclined plate 4 is made of stainless steel, which is not easy to deform, and the sludge is easy to fall off. The inclined plate 4 is not easy to be blocked, and the sludge is not easy to flow back and out of the sludge, and the effluent water quality is not affected.

[0049] In a preferred embodiment, if Figure 1 As shown, the backwash mechanism 7 includes a backwash air pipe and a backwash water pipe which are fixedly arranged side by side in the tank body 1 below the inclined plate 4; the top of the backwash air pipe is evenly provided with air holes along its length direction, and one end of the backwash air pipe passes through the tank body 1 and is connected to the air compressor; the top of the backwash water pipe is evenly provided with water holes along its length direction, and one end of the backwash water pipe passes through the tank body 1 and is connected to the backwash water source through a backwash pump.

[0050] In this embodiment, since most of the sludge attached to the inclined plate 4 is distributed at the lower part of the inclined plate 4 , the backwash mechanism 7 is installed at the lower part of the inclined plate 4 .

[0051] When the water output of the inclined plate sedimentation tank drops significantly, close the water inlet valve, the water outlet valve and the mud discharge valve, and start the backwash process. First, the air compressor injects air into the backwash air pipe, and the compressed air enters the tank body 1 through the air hole to wash the inclined plate 4; after a period of time, turn off the air compressor and open the mud discharge valve to discharge the water and sludge through the mud discharge valve. Then close the mud discharge valve, and turn on the air compressor and the backwash pump at the same time, and the compressed air and clean water enter the tank body 1 together to wash the inclined plate 4 with air and water; after a period of time, turn off the air compressor and the backwash pump and open the mud discharge valve, and discharge the water and sludge through the mud discharge valve again. Finally, close the mud discharge valve and turn on the backwash pump at the same time, and clean water enters the tank body 1 to wash the inclined plate 4; after a period of time, turn off the backwash pump and open the mud discharge valve, and discharge the water and sludge through the mud discharge valve to complete the backwash of the inclined plate 4.

[0052] The backwashing process adopts three steps: air washing, air-water mixed washing, and water washing. The backwashing has a large washing intensity and a large washing scanning area, which can ensure the washing effect on both sides of the inclined plate 4. The mud accumulated on the inclined plate 4 is cleaned regularly to ensure the water treatment effect of the inclined plate sedimentation tank.

[0053] In the description of this specification, the terms "connection", "installation", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] In the description of this specification, the description of the terms "one embodiment", "some embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A new type of inclined plate sedimentation tank, characterized in that: include: A cell body (1) having a first end (11) and a second end (12) opposite to each other; A water distribution channel (2) is arranged in the pool body (1) along the first end (11) to the second end (12), the bottom of the water distribution channel (2) is evenly distributed with water distribution holes (21), and a guide plate (22) is fixedly arranged below the water distribution channel (2) along the first end (11) to the second end (12), and the guide plate (22) is arranged to be inclined downward from the middle to both sides; A water collecting pool (3) is arranged at the second end (12) of the pool body (1); Inclined plates (4) are fixedly arranged in the tank body (1) at equal intervals and distributed on both sides of the water distribution channel (2), and the height of the bottom of the inclined plates (4) is higher than the height of the bottom of the water distribution channel (2); A sludge hopper (5) is arranged at the bottom of the tank body (1) and is located below the inclined plate (4); A water collecting trough (6) is symmetrically arranged on both sides of the water distribution channel (2) and is located above the inclined plate (4). Water outlet weirs (61) are respectively arranged on both sides of the water collecting trough (6). The water collecting trough (6) is connected to the water collecting pool (3); The backwash mechanism (7) is arranged in the tank body (1) and is located below the inclined plate (4).

2. The novel inclined plate sedimentation tank according to claim 1 is characterized in that: A plurality of legs (13) are symmetrically arranged on both sides of the bottom of the pool body (1).

3. The novel inclined plate sedimentation tank according to claim 1 is characterized in that: The first end (11) is provided with a water inlet pipe (23) connected to the water distribution channel (2), and a water inlet valve is provided on the water inlet pipe (23); the water collecting tank (3) is connected with a water outlet pipe (31), and a water outlet valve is provided on the water outlet pipe (31); the bottom of the sludge hopper (5) is connected with a sludge discharge pipe (51), and a sludge discharge valve is provided on the sludge discharge pipe (51).

4. The novel inclined plate sedimentation tank according to claim 1 is characterized in that: The angle between the inclined plates (4) and the horizontal direction is 55°-60°; the vertical spacing between adjacent inclined plates (4) is 80mm-100mm.

5. The novel inclined plate sedimentation tank according to claim 1 is characterized in that: The inclined plate (4) is made of stainless steel.

6. The novel inclined plate sedimentation tank according to claim 1 is characterized in that: The backwash mechanism (7) comprises a backwash air pipe and a backwash water pipe which are fixedly arranged side by side in the tank body (1) below the inclined plate (4); the top of the backwash air pipe is evenly provided with air holes along its length direction, and one end of the backwash air pipe passes through the tank body (1) and is connected to an air compressor; the top of the backwash water pipe is evenly provided with water holes along its length direction, and one end of the backwash water pipe passes through the tank body (1) and is connected to a backwash water source via a backwash pump.

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