Integrated device for low-concentration wastewater treatment

Abstract

The utility model provides a kind of low concentration wastewater integrated treatment device, it is related to wastewater treatment field, and it includes: device main body and feeding assembly, device main body includes mixing area, mixing area and oxidation zone and solid-liquid separation zone, mixing area upside is equipped with magnetic separator, oxidation zone inside is equipped with aeration device, aeration device outer end is connected with air blower, solid-liquid separation zone inside is equipped with inclined plate filler, and solid-liquid separation zone bottom is equipped with sludge discharge pipe, the feeding assembly is located device main body upside, and feeding assembly includes feed tank, and feed tank outside is connected with wastewater inlet pipe, and feed tank upper end is connected with magnetic powder feeding pipe and activated carbon feeding pipe, the feed tank inside is equipped with guide plate, and the guide plate inside is equipped with discharge hole, and discharge hole inside is equipped with plug, and plug lower end is connected with discharge rod.The utility model has the effect that wastewater and treatment powder are synchronously put, and have premixing effect, improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an integrated treatment device for low-concentration wastewater. Background Technology

[0002] Chemical production processes generate large amounts of chemical wastewater containing numerous chemical raw materials, products, and byproducts. Most of these are complex in structure, toxic, harmful, and difficult to biodegrade, leading to the complexity and diversity of chemical wastewater pollution. Currently, pretreatment and combined biological treatment methods are commonly used. Pretreatment measures include flocculation sedimentation, flotation, stripping, adsorption, and catalytic oxidation, while biological methods include SBR, contact oxidation, and AAO. A search revealed existing technology (publication number: CN215049508U) that describes "an integrated treatment device for low-concentration chemical wastewater, including a wastewater inlet pipe, magnetic powder dosing pipe, activated carbon dosing pipe, magnetic separator, stirrer, mixing zone, aeration device, combined packing, biological contact oxidation zone, blower, solid-liquid separation zone, inclined plate packing, effluent weir, effluent pipe, sludge discharge pipe, recovery pump, and return pump. During operation, wastewater enters the equipment through the wastewater inlet pipe, and simultaneously in the mixing zone..." Magnetic powder and activated carbon are added, and the wastewater, magnetic powder, and activated carbon are thoroughly mixed under the action of a stirrer. The mixture then enters the biological contact oxidation zone through the flow holes at the bottom of the mixing zone. Pollutants in the wastewater are removed through aeration and biological oxidation. The effluent flows by gravity into the solid-liquid separation zone. After sludge-water separation, the supernatant is discharged through an overflow weir and an outlet pipe. The sludge settles to the bottom of the solid-liquid separation zone; some sludge is returned to the mixing zone, and some is separated by a recovery pump and a magnetic separator. The magnetic powder is then returned to the mixing zone, and the remaining sludge is discharged for treatment.

[0003] Although existing integrated treatment equipment for low-concentration chemical wastewater meets relevant standards after treatment, it still has some shortcomings in actual use: When using existing integrated wastewater treatment equipment, magnetic powder and activated carbon need to be introduced simultaneously with the wastewater, so a separate control device is required to control the synchronous introduction of magnetic powder and activated carbon, resulting in high equipment investment costs. Secondly, there is no premixing structure between the magnetic powder and activated carbon and the wastewater, resulting in poor mixing effect and low mixing efficiency in the mixing zone, leading to low overall wastewater treatment efficiency. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, an integrated low-concentration wastewater treatment device is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, an integrated low-concentration wastewater treatment device is provided, comprising: a main body and a feeding assembly. The main body includes a mixing zone, an oxidation zone, and a solid-liquid separation zone. A magnetic separator is installed on the upper side of the mixing zone. An aeration device is installed inside the oxidation zone, and a blower is connected to the outer end of the aeration device. Inclined plate packing is installed inside the solid-liquid separation zone, and a sludge discharge pipe is installed at the bottom of the solid-liquid separation zone. The feeding assembly is located on the upper side of the main body and includes a feed box. A wastewater inlet pipe is connected to the outer side of the feed box for feeding. The upper end of the box is connected to a magnetic powder dosing pipe and an activated carbon dosing pipe. The inner side of the feeding box is provided with a guide plate, and the inside of the guide plate is provided with a discharge hole. The discharge hole is provided with a plug, and the lower end of the plug is connected to a discharge rod. A roller is installed on the lower side of the discharge rod, and a rotating plate is provided on the lower side of the roller. A limiting block is provided on the lower end of the rotating plate. A drive roller is provided on the lower side of the guide plate, and a screen is provided on the lower side of the drive roller. An inclined stirring shaft is provided on the lower side of the screen, and a stirring motor is connected to the outer end of the stirring shaft. A baffle is provided on the lower side of the stirring shaft.

[0006] Furthermore, the connection between the wastewater inlet pipe and the feed box is located on the lower side of the guide plate, and the inner end of the wastewater inlet pipe is located in the tangential direction of the rotation path of the drive roller.

[0007] Furthermore, the plug is designed in the shape of a mushroom head and is slidably connected in the feed hole.

[0008] Furthermore, the upper end of the screen is connected to a vertical partition, the partition has a clearance hole inside, and the rotating plate is slidably connected in the clearance hole, while the other end of the rotating plate rotates on the inner wall of the feed box.

[0009] Furthermore, a guide groove is provided on one side of the partition, a guide rod is provided inside the guide groove, and a stabilizing plate is slidably connected to the outside of the guide rod. The stabilizing plate is slidably connected to the outside of the guide rod, and an elastic element is provided on the upper side of the stabilizing plate, which is sleeved on the outside of the guide rod.

[0010] Furthermore, the lower end of the stirring motor is fixed to the outer wall of the feed box by a mounting plate, and the stirring shaft is rotatably inserted into the feed box.

[0011] Furthermore, the baffle is inclinedly arranged in the feeding box, and there is a gap between the upper end of the baffle and the box wall of the feeding box. At the same time, a feeding hole is opened on the western side of the feeding box.

[0012] Furthermore, the outer wall of the drive roller is provided with impellers arranged in an equidistant ring, and a central shaft is inserted and fixed inside the drive roller.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. Wastewater is introduced into the feed box through the wastewater inlet pipe. At this time, there is accumulated magnetic powder and activated carbon powder (introduced from the magnetic powder addition pipe and activated carbon addition pipe) inside the feed box and on the upper side of the guide plate. When the wastewater enters the feed box, the water flow downward drives the drive roller to rotate. During the rotation of the drive roller, the impeller rotates and hits the rotating plate. During the up-and-down swing of the rotating plate, it hits the discharge rod, which in turn drives the plug to move up and down in the discharge hole. When the plug moves upward beyond the discharge hole, it is in the discharge state. When the plug moves downward and is in the discharge hole, it is in the blocking state. In this way, the magnetic powder and activated carbon powder are automatically discharged with the flow of wastewater, avoiding the need to set up a feeding device, reducing costs. At the same time, the up-and-down movement of the discharge rod and the plug has the effect of preventing the discharge hole from being blocked.

[0015] 2. During use, the magnetic powder and activated carbon powder are temporarily buffered on the upper side of the baffle along with the wastewater. At the same time, the stirring shaft is driven by the stirring motor to rotate, so that the wastewater and powder are stirred. When a large amount of wastewater and powder mixture accumulates on the upper side of the baffle, the mixture continuously overflows upward during the stirring process. It overflows from the upper side of the baffle and then flows downward into the mixing zone through the discharge hole, achieving the effect of temporary stirring and premixing, thereby improving the wastewater treatment efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the feeding component according to an embodiment of the present utility model.

[0018] Figure 3 This is a cross-sectional structural diagram of the feeding component according to an embodiment of the present utility model.

[0019] Figure 4 This is an embodiment of the present utility model. Figure 3 Schematic diagram of the structure at point A in the middle.

[0020] Figure 5 This is a three-dimensional structural diagram of the drive roller according to an embodiment of the present invention.

[0021] In the diagram: 1. Main body of the device; 11. Mixing zone; 12. Oxidation zone; 13. Blower; 14. Aeration device; 15. Solid-liquid separation zone; 16. Inclined plate packing; 17. Sludge discharge pipe; 2. Feeding assembly; 21. Feed box; 211. Guide plate; 2111. Discharge hole; 212. Drive roller; 2121. Central shaft; 2122. Impeller; 213. Screen; 214. Baffle; 215. Dispensing hole; 216. Partition; 2161. Clearance hole; 22. Wastewater inlet pipe; 23. Magnetic powder dosing pipe; 24. Activated carbon dosing pipe; 25. Stirring motor; 251. Mounting plate; 252. Stirring shaft; 26. Discharge rod; 261. Plug; 262. Stabilizing plate; 263. Guide rod; 264. Elastic component; 27. Rotating plate; 28. Limiting block. Detailed Implementation

[0022] Reference Figures 1 to 5 As shown, this utility model provides an integrated low-concentration wastewater treatment device, including: a main body 1 and a feeding assembly 2. The main body 1 includes a mixing zone 11, an oxidation zone 12, and a solid-liquid separation zone 15. A magnetic separator is provided on the upper side of the mixing zone 11. An aeration device 14 is provided inside the oxidation zone 12, and a blower 13 is connected to the outer end of the aeration device 14. An inclined plate packing 16 is provided inside the solid-liquid separation zone 15, and a sludge discharge pipe 17 is provided at the bottom of the solid-liquid separation zone 15. The feeding assembly 2 is located on the upper side of the main body 1 and includes a feed box 21. A wastewater inlet pipe 22 is connected to the outer side of the feed box 21, and a magnetic powder additive is connected to the upper end of the feed box 21. The tube 23 and activated carbon dosing tube 24 are provided. The inner side of the feed box 21 is provided with a guide plate 211, and the inside of the guide plate 211 is provided with a discharge hole 2111. The discharge hole 2111 is provided with a plug 261. The lower end of the plug 261 is connected to a discharge rod 26. A roller is installed on the lower side of the discharge rod 26, and a rotating plate 27 is provided on the lower side of the roller. A limiting block 28 is provided on the lower end of the rotating plate 27. A drive roller 212 is provided on the lower side of the guide plate 211, and a screen 213 is provided on the lower side of the drive roller 212. An inclined stirring shaft 252 is provided on the lower side of the screen 213, and a stirring motor 25 is connected to the outer end of the stirring shaft 252. A baffle 214 is provided on the lower side of the stirring shaft 252.

[0023] In this embodiment, the main body 1 and the feeding component 2 constitute the main structure of the integrated low-concentration wastewater treatment device involved in this application.

[0024] The mixing zone 11, oxidation zone 12, blower 13, aeration device 14, solid-liquid separation zone 15, inclined plate packing 16, sludge discharge pipe 17, and magnetic separator involved in the main body 1 of the device have been fully disclosed in the prior art documents.

[0025] Specifically, the guide plate 211 is inclined, and the discharge hole 2111 is located at the lower end of the guide plate 211, so that the magnetic powder and activated carbon powder are concentrated between the guide plate 21 and the inner wall of the feed box 21.

[0026] Specifically, in a stationary state, the rotating plate 27 is in a horizontal state after being limited and blocked by the limiting block 28.

[0027] It should be noted that some of the magnetic powder and activated carbon powder fall through the feeding hole 215, and some fall on the upper side of the baffle 214, temporarily mixing with the wastewater that passes through the screen 213.

[0028] like Figures 2 to 5 In the process, the connection between the wastewater inlet pipe 22 and the feed box 21 is located below the guide plate 211, and the inner end of the wastewater inlet pipe 22 is located tangentially to the rotation path of the drive roller 212. The plug 261 is mushroom-shaped and slidably connected in the discharge hole 2111. The upper end of the screen 213 is connected to a vertical partition 216. The partition 216 has a clearance hole 2161 inside, and the rotating plate 27 is slidably connected in the clearance hole 2161. At the same time, the other end of the rotating plate 27 rotates on the inner wall of the feed box 21. A guide groove is provided on one side of the partition 216, and a guide rod 263 is provided inside the guide groove. A stabilizing device is slidably connected to the outside of the guide rod 263. The fixed plate 262 and the stabilizing plate 262 are slidably connected to the outside of the guide rod 263. At the same time, an elastic element 264 is provided on the upper side of the stabilizing plate 262. The elastic element 264 is sleeved on the outside of the guide rod 263. The lower end of the stirring motor 25 is fixed to the outer wall of the feed box 21 through the mounting plate 251. The stirring shaft 252 is rotatably inserted into the feed box 21. The baffle 214 is inclinedly arranged in the feed box 21. There is a gap between the upper end of the baffle 214 and the box wall of the feed box 21. At the same time, a feeding hole 215 is opened on the western side of the feed box 21. The outer wall of the drive roller 212 is provided with impellers 2122 arranged in an equidistant ring. The central shaft 2121 is inserted and fixed inside the drive roller 212.

[0029] Specifically, the end of the rotating plate 27 is located on the rotation path of the impeller 2122, so that the impeller 2122 can continuously hit the rotating plate 27 when rotating, causing the rotating plate 27 to continuously vibrate the feed rod 26 and the plug 261 upward.

[0030] Specifically, the shape of the impeller 2122 facilitates the downward flow of water to generate a downward driving rotational force after contacting its surface.

[0031] In operation, wastewater is introduced into the feed box via the wastewater inlet pipe. At this time, magnetic powder and activated carbon powder (added through the magnetic powder and activated carbon feeding pipes) are already accumulated inside the feed box and above the guide plate. When the wastewater enters the feed box, the downward flow drives the drive roller to rotate. During the rotation of the drive roller, the impeller strikes the rotating plate, and as the rotating plate swings up and down, it strikes the discharge rod, causing the plug to move up and down in the discharge hole. When the plug moves upward past the discharge hole, it is in the discharge state; when the plug moves downward and is in the discharge hole, it is in the blocking state. This process achieves the mixing of magnetic powder and activated carbon powder. The material is automatically discharged as the wastewater flows, eliminating the need for a separate feeding device and reducing costs. Simultaneously, the movement of the discharge rod and plug prevents clogging of the discharge hole. During operation, the magnetic powder and activated carbon powder are temporarily buffered on the upper side of the baffle along with the wastewater. Simultaneously, the stirring shaft is driven by a stirring motor to rotate, agitating the wastewater and powder. When a large amount of wastewater and powder mixture accumulates on the upper side of the baffle, the mixture continuously overflows upwards during the stirring process, then flows downwards into the mixing zone through the discharge hole, achieving a temporary stirring and pre-mixing effect, thereby improving wastewater treatment efficiency.

[0032] The integrated low-concentration wastewater treatment device of this invention can effectively solve the problems mentioned in the background technology. It achieves the effect of simultaneous feeding of wastewater and treatment powder on the basis of existing integrated low-concentration wastewater treatment device technology, and has a pre-mixing effect, thus improving the treatment efficiency.

Claims

1. A low concentration wastewater integrated treatment device, comprising: The device consists of a main body (1) and a feeding assembly (2). The main body (1) includes a mixing zone (11), an oxidation zone (12), and a solid-liquid separation zone (15). A magnetic separator is installed on the upper side of the mixing zone (11). An aeration device (14) is installed inside the oxidation zone (12). A blower (13) is connected to the outer end of the aeration device (14). An inclined plate packing (16) is installed inside the solid-liquid separation zone (15), and a sludge discharge pipe (17) is installed at the bottom of the solid-liquid separation zone (15). The feeding assembly (2) is located on the upper side of the main body (1). The feeding assembly (2) includes a feed box (21). A wastewater inlet pipe (22) is connected to the outer side of the feed box (21). A magnetic powder dosing pipe (23) and an activated carbon dosing pipe (24) are connected to the upper end of the feed box (21). The feed box (21) is provided with a guide plate (211) inside, and a discharge hole (2111) is provided inside the guide plate (2111). A plug (261) is provided inside the discharge hole (2111). A discharge rod (26) is connected to the lower end of the plug (261). A roller is installed on the lower side of the discharge rod (26), and a rotating plate (27) is provided on the lower side of the roller. A limiting block (28) is provided at the lower end of the rotating plate (27). A drive roller (212) is provided on the lower side of the guide plate (211), and a screen (213) is provided on the lower side of the drive roller (212). An inclined stirring shaft (252) is provided on the lower side of the screen (213), and a stirring motor (25) is connected to the outer end of the stirring shaft (252). A baffle (214) is provided on the lower side of the stirring shaft (252).

2. The low concentration wastewater integrated treatment device according to claim 1, characterized in that, The connection between the wastewater inlet pipe (22) and the feed box (21) is located on the lower side of the guide plate (211), and the inner end of the wastewater inlet pipe (22) is located in the tangential direction of the rotation path of the drive roller (212).

3. The low concentration wastewater integrated treatment device according to claim 1, characterized in that, The plug (261) is shaped like a mushroom head and is slidably connected in the feed hole (2111).

4. The low concentration wastewater integrated treatment device according to claim 1, characterized in that, The upper end of the screen (213) is connected to a vertical partition (216). The partition (216) has a clearance hole (2161) inside, and the rotating plate (27) is slidably connected in the clearance hole (2161). At the same time, the other end of the rotating plate (27) rotates on the inner wall of the feed box (21).

5. The low concentration wastewater integrated treatment device according to claim 4, characterized in that, A guide groove is provided on one side of the partition (216), and a guide rod (263) is provided inside the guide groove. A stabilizing plate (262) is slidably connected to the outside of the guide rod (263). The stabilizing plate (262) is slidably connected to the outside of the guide rod (263). At the same time, an elastic element (264) is provided on the upper side of the stabilizing plate (262), and the elastic element (264) is sleeved on the outside of the guide rod (263).

6. The low concentration wastewater integrated treatment device according to claim 1, characterized in that, The lower end of the stirring motor (25) is fixed to the outer wall of the feed box (21) by the mounting plate (251), and the stirring shaft (252) is rotatably inserted into the feed box (21).

7. The low concentration wastewater integrated treatment device according to claim 1, characterized in that, The baffle (214) is inclinedly arranged in the feed box (21), and there is a gap between the upper end of the baffle (214) and the box wall of the feed box (21). At the same time, a feeding hole (215) is opened on the west side of the feed box (21).

8. The low concentration wastewater integrated treatment device according to claim 1, characterized in that, The outer wall of the driving roller (212) is provided with impellers (2122) arranged in equidistant annular form, and the center shaft (2121) is inserted and fixed in the inside of the driving roller (212).

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