A landfill leachate acid treatment device

Abstract

This utility model discloses a landfill leachate acid treatment device, including a treatment tank. A top frame is fixedly connected to the top outer wall of the treatment tank. Two sets of metering inlet components are provided on the top of the top frame. A first motor is fixedly connected to the top inner wall of the top frame. A first stirring frame is fixedly connected to the output end of the first motor and is located inside the treatment tank. Multiple guide plates are fixedly connected to the inner walls of both sides of the treatment tank. The guide plates on both sides of the treatment tank are staggered. An inlet pipe is fixedly connected to the inlet of the treatment tank. This utility model uses a second stirring frame driven by a second motor to rotate, thereby initially mixing the landfill leachate and acid. Then, the first stirring frame is driven by a first motor to rotate, thereby further mixing the landfill leachate and acid, so that the landfill leachate and acid are fully and evenly mixed for subsequent treatment.

Description

Technical Field

[0001] This utility model relates to the field of landfill leachate acidification technology, and in particular to a landfill leachate acidification treatment device. Background Technology

[0002] Currently, in order to lower the pH value of landfill leachate and facilitate sedimentation reactions, it is often necessary to add acid to the landfill leachate using an acid treatment device, which facilitates subsequent sedimentation and other treatments of the leachate.

[0003] Among them, a search revealed that Chinese patent CN221971353U discloses an acid addition device for landfill leachate treatment. However, the technical solution of the above patent has poor mixing effect between landfill leachate and acid during application. Therefore, in order to better realize the mixing function of landfill leachate acid addition, promote the technological progress of the industry, and improve the core technology competitiveness, this application proposes a new implementation scheme that is different from the mixing structure of the acid addition device in the prior art. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor mixing effect of existing landfill leachate and acid, and to propose a landfill leachate acid treatment device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A landfill leachate acid treatment device includes a treatment tank. A top frame is fixedly connected to the top outer wall of the treatment tank. Two sets of metering inlet components are provided on the top of the top frame. A first motor is fixedly connected to the top inner wall of the top frame. A first stirring frame is fixedly connected to the output end of the first motor and is located inside the treatment tank. Multiple guide plates are fixedly connected to the inner walls of both sides of the treatment tank. The guide plates on both sides of the treatment tank are staggered. An inlet pipe is fixedly connected to the inlet of the treatment tank. A side plate is fixedly connected to one end of the inlet pipe. A second motor is fixedly connected to one side of the side plate. A second stirring frame is fixedly connected to the output end of the second motor and is located inside the inlet pipe.

[0007] Furthermore, the metering liquid inlet assembly includes a metering box, which is fixed to the top of the top frame by bolts. A metering scale plate is provided on one side of the metering box, and a liquid storage tank is fixedly connected to the top of the metering box. A second control valve is fixedly connected to the discharge end of the liquid storage tank, and a second connecting pipe is fixedly connected to the other end of the second control valve. The other end of the second connecting pipe is sealed and inserted into one end of the metering box.

[0008] Furthermore, a first control valve is fixedly connected to the discharge end of the metering box, and a first connecting pipe is fixedly connected to the other end of the first control valve. The bottom end of the first connecting pipe is sealed and inserted into the top of the liquid inlet pipe.

[0009] Furthermore, a sealing door is connected to one side of the processing box via a hinge, and multiple side grooves are provided on one side of the sealing door.

[0010] Furthermore, a plurality of threaded rods are rotatably connected to one side of the outer wall of the processing box, one end of the threaded rod is engaged with the side groove, and a fastening nut is threadedly connected to one end of the threaded rod.

[0011] Furthermore, a liquid collection hopper is fixedly connected to the bottom between the inner walls of the multiple sides of the processing tank.

[0012] Furthermore, a third control valve is fixedly connected to the discharge end of the processing box.

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

[0014] 1. The second stirring frame rotates under the drive of the second motor, thereby initially stirring and mixing the landfill leachate and acid solution. Then, the first stirring frame rotates under the drive of the first motor, thereby further stirring and mixing the landfill leachate and acid solution, so that the landfill leachate and acid solution are fully and evenly mixed for subsequent treatment.

[0015] 2. The leachate and acid are fed into two metering tanks respectively, and the liquid level in the metering tanks is observed through the metering scale. When the liquid level reaches the required amount, the second control valve is closed and the first control valve is opened. The leachate and acid in the two metering tanks are then fed into the inlet pipe through the first connecting pipe, thereby achieving quantitative addition, which is convenient and quick. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a landfill leachate acid treatment device proposed in this utility model;

[0017] Figure 2 This is a cross-sectional front view schematic diagram of a landfill leachate acid treatment device proposed in this utility model;

[0018] Figure 3 This is a cross-sectional view of the metering inlet assembly of a landfill leachate acid treatment device proposed in this utility model.

[0019] Figure 4 This is a partial three-dimensional structural diagram of a landfill leachate acid treatment device proposed in this utility model.

[0020] In the diagram: 1. Processing tank; 2. Top frame; 3. Metering inlet assembly; 301. Metering box; 302. Metering scale plate; 303. First control valve; 304. First connecting pipe; 305. Storage tank; 306. Second control valve; 307. Second connecting pipe; 4. First motor; 5. First stirring rack; 6. Guide plate; 7. Inlet pipe; 8. Side plate; 9. Second motor; 10. Second stirring rack; 11. Sealing door; 12. Threaded rod; 13. Fastening nut; 14. Side groove; 15. Collection hopper; 16. Third control valve. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figures 1-4 A landfill leachate acid treatment device includes a treatment tank 1, which is made of corrosion-resistant 316L stainless steel. The inlet of the treatment tank 1 is welded with an inlet pipe 7. One end of the inlet pipe 7 is fixed with a side plate 8 by bolts. One side of the side plate 8 is fixed with a second motor 9 by bolts. The output end of the second motor 9 is fixed with a second stirring frame 10 by bolts. The second stirring frame 10 is located inside the inlet pipe 7. Driven by the second motor 9, the second stirring frame 10 rotates, thereby performing preliminary mixing of the landfill leachate and acid.

[0023] The top outer wall of the treatment tank 1 is fixed with a top frame 2 by bolts. The top of the top frame 2 is equipped with two sets of metering liquid inlet components 3. The top inner wall of the top frame 2 is fixed with a first motor 4 by bolts. The output end of the first motor 4 is fixed with a first stirring frame 5 by bolts. The first stirring frame 5 is fixed in the treatment tank 1 by a sealed rotational mechanism with embedded bearings. Driven by the first motor 4, the first stirring frame 5 rotates, thereby further stirring and mixing the leachate and acid, so that the leachate and acid are fully and evenly mixed.

[0024] Multiple liquid guide plates 6 are welded to the inner walls of both sides of the treatment tank 1. The liquid guide plates 6 on both sides of the treatment tank 1 are staggered, and the staggered arrangement of multiple liquid guide plates 6 prolongs the residence time of landfill leachate and acid in the treatment tank 1.

[0025] The metering and liquid feeding assembly 3 includes a metering box 301, which is fixed to the top of the top frame 2 by bolts. A metering scale plate 302 is embedded on one side of the metering box 301. A liquid storage tank 305 is fixed to the top of the metering box 301 by bolts. A second control valve 306 is connected to the discharge end of the liquid storage tank 305 through a flange. A second connecting pipe 307 is connected to the other end of the second control valve 306 through a flange. The other end of the second connecting pipe 307 is sealed and inserted into one end of the metering box 301.

[0026] The discharge end of the metering box 301 is connected to the first control valve 303 via a flange, and the other end of the first control valve 303 is connected to the first connecting pipe 304 via a flange. The bottom end of the first connecting pipe 304 is sealed and inserted into the top of the liquid inlet pipe 7.

[0027] The two liquid storage tanks 305, the first connecting pipe 304, and the second connecting pipe 307 can all be made of corrosion-resistant 316L stainless steel;

[0028] The landfill leachate and acid in the two storage tanks 305 are respectively fed into the two metering tanks 301 through the second connecting pipe 307. The liquid level in the metering tanks 301 is observed through the metering scale plate 302. When the liquid level reaches the required amount, the second control valve 306 is closed and the first control valve 303 is opened. The landfill leachate and acid in the two metering tanks 301 are fed into the inlet pipe 7 through the first connecting pipe 304, thereby realizing quantitative addition.

[0029] A sealing door 11 is connected to one side of the treatment box 1 via a hinge. Multiple side grooves 14 are provided on one side of the sealing door 11. Multiple threaded rods 12 are rotatably connected to the outer wall of one side of the treatment box 1. One end of the threaded rod 12 is engaged with the side groove 14. A fastening nut 13 is threadedly connected to one end of the threaded rod 12. By unscrewing the fastening nut 13, the threaded rod 12 is separated from the side groove 14, and then the sealing door 11 is opened, which facilitates the internal maintenance of the treatment box 1.

[0030] A collection hopper 15 is welded to the bottom between the inner walls of the treatment tank 1 on multiple sides to facilitate the discharge of landfill leachate and acid.

[0031] The discharge end of the treatment tank 1 is connected to a third control valve 16 via a flange. The mixed landfill leachate and acid solution are discharged from the third control valve 16 into the sedimentation tank for further treatment.

[0032] The working principle of this embodiment is as follows: In use, the two storage tanks 305 respectively store filtered landfill leachate and acid. First, the two second control valves 306 are opened, and the landfill leachate and acid in the two storage tanks 305 are respectively input into the two metering tanks 301 through the second connecting pipes 307. The liquid level in the metering tanks 301 is observed through the metering scale plate 302. When the liquid level reaches the required amount, the second control valves 306 are closed, and then the first control valve 303 is opened. The landfill leachate and acid in the two metering tanks 301 are input into the inlet pipe 7 through the first connecting pipe 304. Then, the landfill leachate and acid flow into the treatment tank 1 along the inlet pipe 7.

[0033] During the flow process, the second motor 9 is started, and the second stirring frame 10 rotates under the drive of the second motor 9, thereby initially stirring and mixing the landfill leachate and acid. Then, the landfill leachate and acid flow into the treatment tank 1. Next, the landfill leachate and acid flow downward along the guide plate 6, and the multiple guide plates 6 are staggered to prolong the residence time of the landfill leachate and acid in the treatment tank 1. During this process, the first motor 4 is started, and the first stirring frame 5 rotates under the drive of the first motor 4, thereby further stirring and mixing the landfill leachate and acid, so that the landfill leachate and acid are fully and evenly mixed.

[0034] The solution after adding acid can be sampled and tested through the third control valve 16 to determine whether it meets the discharge standard. If it does, the third control valve 16 can be connected to subsequent treatment equipment. The mixed landfill leachate and acid solution are discharged from the third control valve 16 through the collection hopper 15 for subsequent targeted treatment.

[0035] During maintenance, unscrew the fastening nut 13, turn the threaded rod 12 to separate it from the side groove 14, and then open the sealing door 11 to facilitate internal maintenance of the processing box 1. Example 2

[0036] A COD concentration detector and a pH detector can be fixed inside the treatment chamber 1. The COD concentration detector can be an LH-P3COD detector, and the pH detector can be a PHB series online detector. Both the COD concentration detector and the pH detector are fixed outside the treatment chamber 1, and their probes are inside the treatment chamber 1 and sealed at the connection with the treatment chamber 1.

[0037] Whether the mixed liquid meets the discharge standard can be directly detected by COD concentration detector and pH value detector without sampling, which is more convenient.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A landfill leachate acid treatment device, comprising a treatment tank (1), characterized in that, The top outer wall of the processing box (1) is fixedly connected to a top frame (2). The top of the top frame (2) is provided with two sets of metering liquid inlet components (3). The top inner wall of the top frame (2) is fixedly connected to a first motor (4). The output end of the first motor (4) is fixedly connected to a first stirring rack (5). The first stirring rack (5) is located inside the processing box (1). Multiple liquid guide plates (6) are fixedly connected to the inner walls on both sides of the processing box (1). The liquid guide plates (6) on both sides of the processing box (1) are staggered. The feed inlet of the processing box (1) is fixedly connected to a liquid inlet pipe (7). One end of the liquid inlet pipe (7) is fixedly connected to a side plate (8). One side of the side plate (8) is fixedly connected to a second motor (9). The output end of the second motor (9) is fixedly connected to a second stirring rack (10). The second stirring rack (10) is located inside the liquid inlet pipe (7).

2. The landfill leachate acid treatment device according to claim 1, characterized in that, The metering liquid inlet assembly (3) includes a metering box (301), which is fixed to the top of the top frame (2) by bolts. A metering scale plate (302) is provided on one side of the metering box (301). A storage tank (305) is fixedly connected to the top of the metering box (301). A second control valve (306) is fixedly connected to the discharge end of the storage tank (305). A second connecting pipe (307) is fixedly connected to the other end of the second control valve (306). The other end of the second connecting pipe (307) is sealed and inserted into one end of the metering box (301).

3. The landfill leachate acid treatment device according to claim 2, characterized in that, The discharge end of the metering box (301) is fixedly connected to a first control valve (303), and the other end of the first control valve (303) is fixedly connected to a first connecting pipe (304). The bottom end of the first connecting pipe (304) is sealed and inserted into the top of the liquid inlet pipe (7).

4. The landfill leachate acid treatment device according to claim 1, characterized in that, The processing box (1) has a sealing door (11) connected to one side by a hinge, and the sealing door (11) has multiple side grooves (14) on one side.

5. The landfill leachate acid treatment device according to claim 4, characterized in that, The outer wall of one side of the processing box (1) is rotatably connected with a plurality of threaded rods (12), one end of the threaded rod (12) is engaged with the side groove (14), and one end of the threaded rod (12) is threadedly connected with a fastening nut (13).

6. The landfill leachate acid treatment device according to claim 1, characterized in that, The bottom of the processing tank (1) is fixedly connected to the liquid collection hopper (15) between the inner walls of the multiple sides.

7. The landfill leachate acid treatment device according to claim 1, characterized in that, The discharge end of the processing box (1) is fixedly connected to a third control valve (16).

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