Lanmela precipitation device

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a Lanmela sedimentation device which comprises a shell, a sludge discharge area, a sedimentation area, a water inlet area and a clear water area are arranged in the shell, the sedimentation area, the water inlet area and the clear water area are located above the sludge discharge area, the sedimentation area is obliquely arranged, and a plurality of inclined plates are arranged in the sedimentation area side by side. A water inlet connector communicated with the water inlet area and a water drainage connector communicated with the clear water area are arranged on the side face of the shell, a sludge discharging opening communicated with the sludge discharging area is formed in the bottom of the shell, the lower portion of the water inlet area is communicated with the settling area, the settling area and the clear water area are separated through a first partition plate fixed in the shell, and a flow guide groove is formed in the surface of the first partition plate. An oil filtering box is fixed to the side face of the shell, and an oil filtering groove communicated with the oil filtering box is horizontally formed in the surface of the shell. The flow guide groove is lower than the oil filtering groove; the oil filtering box and the oil filtering groove cooperate, layered interception is achieved through the oil-water density difference, an oil-bearing layer is directionally discharged through the oil filtering groove, and a clear water layer is guided out through the flow guide groove.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to a Lamella sedimentation device. Background Technology

[0002] Lammella sedimentation tanks are used in industries such as electroplating wastewater, papermaking wastewater, industrial production wastewater, pre-filtration treatment, filtered effluent and backwash water, river water purification, and sludge thickening. They effectively separate solids from liquids and create a good laminar flow environment for better sedimentation. Traditional sedimentation equipment generally suffers from low settling efficiency, insufficient oil-water separation, and easy secondary floating of sludge when treating wastewater containing oil and suspended solids. Although conventional inclined plate sedimentation tanks improve efficiency by increasing the sedimentation area, uneven water flow distribution can easily cause the sludge accumulation area to be disturbed by the incoming water, affecting the settling effect; at the same time, the lack of an oil-sludge separation structure causes floating oil to be discharged with the clear water, affecting the quality of the effluent. Utility Model Content

[0003] I. Technical problems to be solved

[0004] The purpose of this invention is to provide a Lamella sedimentation device that can effectively improve oil-water separation, increase the residence time of suspended solids, effectively inhibit the secondary floating of suspended sludge particles, and improve the settling effect.

[0005] II. Technical Solution

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a Lamella sedimentation device, including a shell, which has a sludge discharge zone, a settling zone, an inlet zone, and a clear water zone located above the sludge discharge zone. The settling zone is inclined and has several inclined plates arranged side by side inside. The side of the shell is provided with an inlet connector communicating with the inlet zone and a drain connector communicating with the clear water zone. The bottom of the shell is provided with a sludge discharge port communicating with the sludge discharge zone. The inlet zone communicates with the settling zone below it. The settling zone and the clear water zone are separated by a first partition fixed inside the shell. The surface of the first partition has a guide groove. An oil filter box is fixed to the side of the shell, and an oil filter groove communicating with the oil filter box is horizontally formed on the surface of the shell. The height of the guide groove is lower than that of the oil filter groove.

[0008] Furthermore, a baffle plate is fixed in the settling zone, and one side of the baffle plate is attached to the lower edge or directly below the guide channel.

[0009] Furthermore, the housing has two opposing second partitions in the middle, which define the water inlet area between the two second partitions and define two symmetrically distributed settling areas on both sides of the water inlet area between the two second partitions and the opposite side walls of the housing; the housing is also fixed with a reflector plate, which is in the shape of an inverted V and is positioned directly below the water inlet area so that the water flow can be guided to the settling areas on both sides.

[0010] Furthermore, a backflush connector is provided on the outer side of the housing, which connects to the area below the water inlet.

[0011] Furthermore, the baffle is inclined and higher on the side closer to the guide channel.

[0012] Furthermore, flow channels are formed between the side of the baffle away from the flow guide groove and the inner wall of the housing, between the side end of the baffle near the second partition and the second partition, and between the side end of the baffle near the oil filter groove and the inner wall of the housing.

[0013] Furthermore, the horizontal projection area of ​​the baffle is at least two-thirds of the horizontal projection area of ​​all the ramps.

[0014] Furthermore, the housing includes an upper housing and a lower housing that are detachably connected by a bolt and nut assembly, with the sludge discharge zone located inside the lower housing and the settling zone, water inlet zone, and clear water zone located inside the upper housing.

[0015] III. Beneficial Effects

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] 1. The oil filter box and oil filter tank work together to achieve stratified retention by utilizing the density difference between oil and water. The oil-containing layer is discharged directionally through the oil filter tank, and the clear water layer is discharged through the guide channel.

[0018] 2. In this utility model, the V-shaped reflector plate guides the incoming water evenly to the bottom of the settling zones on both sides, avoiding direct impact on the sludge discharge zone and causing sludge disturbance; the baffle plate is arranged at an angle and its horizontal projection area covers at least two-thirds of the projection area of ​​all inclined plates, which, together with the guide channel, extends the water flow path, increases the residence time of suspended solids, effectively suppresses secondary floating, and improves the settling effect.

[0019] 3. The shell is designed with separate upper and lower shells connected by bolts, which can be quickly disassembled to clean the inclined plate area and the sludge discharge area;

[0020] 4. The backflush connector is connected to high-pressure clean water to flush out internal silt, solving the problem of traditional equipment requiring manual cleaning after shutdown. Attached Figure Description

[0021] Figure 1This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 yes Figure 1 Rear perspective view;

[0023] Figure 3 yes Figure 1 Left perspective view;

[0024] Figure 4 yes Figure 1 Top view;

[0025] 1. Shell; 1a. Upper shell; 1b. Lower shell; 11. Sludge discharge zone; 12. Settling zone; 13. Water inlet zone; 14. Clear water zone; 15. Inclined plate; 16. First partition plate; 161. Guide channel; 17. Second partition plate; 18. Baffle plate; 19. Oil filter tank; 110. Reflector plate; 2. Water inlet connector; 3. Drain connector; 4. Sludge discharge port; 5. Oil filter box; 6. Backflushing connector; 7. Guide channel; 8. Oil discharge connector. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0027] A lamella precipitator, please refer to Figure 1-4 The device includes a shell 1, which contains a sludge discharge zone 11, a settling zone 12, a water inlet zone 13, and a clear water zone 14 located above the sludge discharge zone 11. The settling zone 12 is inclined and has several inclined plates 15 arranged in parallel inside it. Solid particles settle to the surface of the inclined plates 15 under the action of gravity and slide down into the sludge discharge zone 11.

[0028] The shell 1 has an inlet connector 2 connected to the inlet zone 13 on its side, and a drain connector 3 connected to the clear water zone 14 on its side. A sludge discharge port 4 connected to the sludge discharge zone 11 is located at the bottom of the shell 1. The inlet zone 13 is connected to the settling zone 12 below it. The inlet connector 2 guides wastewater into the inlet zone 13. The wastewater enters the settling zone 12 from below the inlet zone 13. The sludge in the wastewater settles on the surface of the inclined plate 15 of the settling zone 12 and falls into the sludge zone. After the sludge content of the upper layer of wastewater in the settling zone 12 decreases, it flows into the clear water zone 14 and is discharged through the drain connector 3.

[0029] The settling zone 12 and the clear water zone 14 are separated by a first partition 16 fixed inside the shell 1. A guide channel 161 is provided on the surface of the first partition 16. The upper clear water in the settling zone 12 above the inclined plate 15 is introduced into the clear water zone 14 for collection through the guide channel 161.

[0030] An oil filter box 5 is fixed on the side of the housing 1. An oil filter groove 19 communicating with the oil filter box 5 is horizontally opened on the surface of the housing 1. The oily water in the uppermost layer of the sewage is introduced into the oil filter box 5 through the oil filter groove 19 and discharged. An oil drain connector 8 can be set on the side of the oil filter box 5 to clean the oily sewage. The height of the guide channel 161 is lower than that of the oil filter groove 19, so that the upper layer of the sewage after sedimentation is divided into an oily layer and a clear water layer. The clear water layer is lower than the oily layer. The clear water in the clear water layer is discharged to the clear water area 14 through the guide channel 161, and the oily water in the oily layer is discharged through the oil filter groove 19.

[0031] In one embodiment of this utility model, a baffle plate 18 is fixed in the settling zone 12, with one side of the baffle plate 18 receiving the lower edge or directly below the guide channel 161. By setting the baffle plate 18, the trace floating matter contained in the water after settling is prevented from floating directly to the surface, causing it to stay in the settling zone 12 for a longer time, thereby improving the settling effect.

[0032] Two opposing second partitions 17 are provided in the middle of the shell 1, defining an inlet area 13 between the two partitions 17. The two partitions 17, respectively, define two symmetrically distributed settling areas 12 on both sides of the inlet area 13 between their respective side walls. A reflector 110 is also fixed to the shell 1. The reflector 110 is in an inverted V-shape and positioned directly below the inlet area 13 to guide the water flow towards the settling areas 12 on both sides. By setting the reflector 110, the water flow direction is guided, causing the water to flow laterally to both sides. This prevents the water flow from directly impacting the sludge settled in the sludge discharge area 11 below the inlet area 13, thus preventing the sludge from floating up. Simultaneously, the water flow can carry the sludge and other impurities it contains to the settling areas 12 on both sides, improving the settling effect.

[0033] The outer side of the housing 1 is provided with a backflush connector 6 that connects to the bottom of the water inlet area 13. Regularly connecting clean water through the backflush connector 6 can quickly clean the inside of the housing 1.

[0034] The baffle 18 is inclined and higher on the side closer to the guide channel 161. By being inclined, a small amount of impurities falling on the surface of the baffle 18 can settle and slide down its surface back to the settling area 12.

[0035] A flow channel 7 is formed between the side of the baffle plate 18 away from the flow guide channel 161 and the inner wall of the shell 1, between the side end of the baffle plate 18 near the second partition 17 and the second partition 17, and between the side end of the baffle plate 18 near the oil filter tank 19 and the inner wall of the shell 1. Water flows from below the baffle plate 18 through the flow guide channel 7 to above the baffle plate 18, and then flows along the baffle plate 18 to the flow guide channel 161 to discharge clean water. By setting the flow guide channel 7 at the flow guide channel 161, the flow path length of the water from below the baffle plate 18 to the flow guide channel 161 is extended, which can further increase the settling time of suspended particles, making it difficult for a small amount of impurities in the settling water to be discharged from the flow guide channel 161 with the flow of clean water, thereby improving the settling effect.

[0036] The horizontal projection area of ​​the baffle 18 is at least two-thirds of the horizontal projection area of ​​all the inclined plates 15. In the sedimentation tank of the inclined plates 15, the sedimentation area is the sum of the horizontal projection areas of all the inclined plates 15, and the sufficiently long baffle 18 ensures the length of the water flow path.

[0037] The housing 1 includes an upper housing 1a and a lower housing 1b that are detachably connected by a bolt and nut assembly. The sludge discharge zone 11 is located in the lower housing 1b, and the settling zone 12, the water inlet zone 13, and the clear water zone 14 are located in the upper housing 1a. By setting the housing 1 as a separate unit, disassembly, assembly, and cleaning are convenient.

[0038] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A Lamella sedimentation device, comprising a shell, wherein the shell has a sludge discharge zone, and a settling zone, an inlet zone, and a clear water zone located above the sludge discharge zone; the settling zone is inclined and has a plurality of inclined plates arranged side by side therein; the side of the shell is provided with an inlet connector communicating with the inlet zone and a drain connector communicating with the clear water zone; the bottom of the shell is provided with a sludge discharge port communicating with the sludge discharge zone; and the inlet zone communicates with the settling zone below it, characterized in that... The settling zone and the clear water zone are separated by a first partition fixed inside the shell, and a flow guide groove is formed on the surface of the first partition; an oil filter box is fixed on the side of the shell, and an oil filter groove communicating with the oil filter box is formed on the surface of the shell horizontally; the height of the flow guide groove is lower than that of the oil filter groove.

2. The Lamellar precipitation apparatus according to claim 1, characterized in that, A baffle plate is fixed in the settling zone, and one side of the baffle plate is attached to the lower edge or directly below the guide channel.

3. The Lamellar precipitation apparatus according to claim 2, characterized in that, The shell has two opposing second partitions in the middle, which define the water inlet area. The two second partitions define two symmetrically distributed settling areas on both sides of the water inlet area between the two second partitions and the opposite side walls of the shell. The shell is also fixed with a reflector plate, which is in the shape of an inverted V and is located directly below the water inlet area so that the water flow can be guided to the settling areas on both sides.

4. A Lamera precipitation apparatus according to claim 1 or 3, characterized in that, The outer side of the housing is provided with a backflush connector that connects to the bottom of the water inlet area.

5. The Lamellar precipitation apparatus according to claim 3, characterized in that, The baffle is inclined and higher on the side closer to the guide channel.

6. A Lamera precipitation apparatus according to claim 3 or 5, characterized in that, A flow channel is formed between the side of the baffle away from the flow guide groove and the inner wall of the shell, between the side end of the baffle near the second partition and the second partition, and between the side end of the baffle near the oil filter groove and the inner wall of the shell.

7. The Lamellar precipitation apparatus according to claim 6, characterized in that, The horizontal projection area of ​​the baffle is at least two-thirds of the horizontal projection area of ​​all the ramps.

8. The Lamellar precipitation apparatus according to claim 1, characterized in that, The housing includes an upper housing and a lower housing that are detachably connected by a bolt and nut assembly. The sludge discharge zone is located inside the lower housing, and the settling zone, water inlet zone, and clear water zone are located inside the upper housing.

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