A heavy metal wastewater treatment device

Abstract

The utility model discloses a kind of heavy metal wastewater treatment equipment, belong to water treatment equipment technical field, including processing box and the pretreatment channel connected in the one side of processing box, the top of pretreatment channel is equipped with pesticide spreading assembly, the inside of processing box is separated into mixing bin and sedimentation bin by two partition plates, wherein, the partition plate close to mixing bin is fixed on the bottom inner wall of processing box, passageway is equipped between the partition plate close to sedimentation bin and the bottom inner wall of processing box, drain pipe is equipped on the side wall of sedimentation bin, the bottom of sedimentation bin is connected with blow-off pipe, first filter screen is movably installed between two partition plates. The utility model is separated into mixing bin and sedimentation bin by setting two partition plates processing box, wastewater and reagent are mixed flocculation after passing through agitator in mixing bin, then slowly rise from the bottom of sedimentation bin by crossing two partition plates, in the process of rising, flocculate deposits, and water body after processing flows out from drain pipe, the present application can continue to work, and work efficiency is high.

Description

Technical Field

[0001] This utility model relates to a water treatment device, and more particularly to a heavy metal wastewater treatment device, belonging to the technical field of water treatment equipment. Background Technology

[0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged during industrial production processes such as mining, metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. The quality and quantity of heavy metal (such as cadmium, nickel, mercury, zinc, etc.) wastewater are related to the production process, and the treatment method mostly involves adding chemicals to the wastewater to cause a reaction and remove the heavy metals. Traditional heavy metal wastewater treatment equipment has some drawbacks. When adding solid chemical scavengers inside the treatment chamber, it is done manually, which leads to low efficiency and thus low efficiency of the entire working process. Application CN202222168909.0 discloses a novel high-efficiency wastewater treatment device for heavy metals, including a treatment chamber. An automatic chemical dosing mechanism is installed on the inner wall of the treatment chamber. The automatic dosing mechanism includes a mounting frame fixedly installed on the inner wall of the treatment chamber. A support rod is fixedly installed at the upper end of the mounting frame, and a storage bin is fixedly installed at the upper end of the support rod. A sliding groove is formed at the upper end of the storage bin, and a connecting groove is formed at the bottom inner side of the storage bin. A spring is movably installed inside the connecting groove, and a limiting rod is movably installed inside the spring. This novel high-efficiency wastewater treatment device for heavy metals utilizes the elasticity of the spring to push a moving plate upwards to move a solid chemical scavenger, which in turn causes a hydraulic cylinder to drive a pusher block, thereby achieving the purpose of automatically adding the solid chemical scavenger and improving the treatment efficiency of heavy metal wastewater.

[0003] However, the device still has the following problems: When treating heavy metals, wastewater and reagents need to be placed in the treatment chamber for reaction, and then the precipitate and water need to be discharged separately before adding wastewater and reagents again. It cannot be used continuously, resulting in low working efficiency.

[0004] Therefore, this utility model proposes a new solution. Utility Model Content

[0005] The main purpose of this utility model is to solve the shortcomings of the above-mentioned devices, such as the inability to be used continuously and low working efficiency, and to provide a heavy metal wastewater treatment device.

[0006] The objective of this utility model can be achieved by adopting the following technical solution:

[0007] A heavy metal wastewater treatment device includes a treatment tank and a pretreatment channel connected to one side of the treatment tank. A chemical dispensing assembly is installed at the top of the pretreatment channel. The inner side of the treatment tank is divided into a mixing chamber and a sedimentation chamber by two partitions. The partition near the mixing chamber is fixed to the bottom inner wall of the treatment tank, and a passage is provided between the partition near the sedimentation chamber and the bottom inner wall of the treatment tank. A drain pipe is installed on the side wall of the sedimentation chamber, and a sewage pipe is connected to the bottom of the sedimentation chamber. A first filter screen is movably installed between the two partitions. A first motor is installed at the top of the mixing chamber, and the output end of the first motor is connected to a stirrer located inside the mixing chamber. A second filter screen is installed inside the pretreatment channel.

[0008] Preferably, the end of the pretreatment channel furthest from the treatment tank is connected to a wastewater pipe.

[0009] Preferably, a wastewater tank is connected to the bottom of the pretreatment channel near the wastewater pipe, and a discharge pipe is connected to the bottom of the wastewater tank.

[0010] Preferably, the inner wall of the pretreatment channel is provided with an installation groove, and the second filter screen is inserted into the inner side of the installation groove.

[0011] Preferably, the spraying assembly includes a medicine tank, the bottom of which is connected to a conveying pipe, and a conveying auger is rotatably mounted on the inner side of the conveying pipe, with a second motor connected to one end of the conveying auger.

[0012] Preferably, a spraying pipe is connected to the bottom of one end of the delivery pipe.

[0013] Preferably, a cover is installed on the top of the conveying pipe, and a handle is connected to the top of the cover.

[0014] Preferably, a rotating shaft is rotatably mounted on the inner side of the conveying pipe, a deflector plate is mounted on the outer wall of the rotating shaft, a transmission belt is connected between one end of the rotating shaft and the conveying auger, and a transmission wheel is connected to both the rotating shaft and the conveying auger.

[0015] Preferably, each of the two partition plates has a shelf connected to its opposite sidewall, and the first filter screen is mounted on the shelf.

[0016] Preferably, a pull rod is fixedly connected to the top of the first filter screen.

[0017] The beneficial technical effects of this utility model are as follows: According to the heavy metal wastewater treatment equipment of this utility model, the treatment tank is divided into a mixing tank and a sedimentation tank by setting two partition plates. Wastewater and reagents are stirred, mixed and flocculated in the mixing tank by an agitator. Then, it slowly rises from the bottom of the sedimentation tank over the two partition plates. During the rising process, the flocculents settle, and the treated water flows out from the drain pipe. This application can operate continuously and has high work efficiency. By setting a pretreatment channel and setting a dosing component on the pretreatment channel, the dosing component sprinkles and mixes the reagents in the pretreatment channel before the wastewater enters the mixing tank, ensuring that the reagents can fully react during continuous water treatment. By setting a first filter screen, preliminary filtration can be carried out between the two partition plates. The first filter screen can be lifted out of the treatment tank for cleaning. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure according to a preferred embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of the overall structure according to a preferred embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the processing box structure according to a preferred embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a spraying assembly structure according to a preferred embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional view of a spraying assembly structure according to a preferred embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the first filter screen structure according to a preferred embodiment of the present invention.

[0024] In the diagram: 1. Processing tank; 2. Pretreatment channel; 3. Divider plate; 4. Mixing chamber; 5. Sedimentation chamber; 6. Passageway; 7. Drainage pipe; 8. Sewage pipe; 9. First filter screen; 10. First motor; 11. Agitator; 12. Second filter screen; 13. Wastewater pipe; 14. Sewage tank; 15. Discharge pipe; 16. Installation slot; 17. Medicine tank; 18. Conveying pipe; 19. Conveying auger; 20. Second motor; 21. Spraying pipe; 22. Tank cover; 23. Handle; 24. Rotating shaft; 25. Paddle plate; 26. Drive belt; 27. Shelf; 28. Pull rod. Detailed Implementation

[0025] To enable those skilled in the art to understand the technical solution of this utility model more clearly, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of this utility model is not limited thereto.

[0026] like Figures 1-6 As shown, the heavy metal wastewater treatment equipment provided in this embodiment includes a treatment tank 1 and a pretreatment channel 2 connected to one side of the treatment tank 1. The top of the pretreatment channel 2 is equipped with a spraying assembly. The inner side of the treatment tank 1 is divided into a mixing chamber 4 and a sedimentation chamber 5 by two partition plates 3. The partition plate 3 near the mixing chamber 4 is fixed to the bottom inner wall of the treatment tank 1. A passage 6 is provided between the partition plate 3 near the sedimentation chamber 5 and the bottom inner wall of the treatment tank 1. A drain pipe 7 is provided on the side wall of the sedimentation chamber 5. A sewage pipe 8 is connected to the bottom of the sedimentation chamber 5. A first filter screen 9 is movably installed between the two partition plates 3. A first motor 10 is installed on the top of the mixing chamber 4. The output end of the first motor 10 is connected to a stirrer 11 located inside the mixing chamber 4. A second filter screen 12 is installed on the inner side of the pretreatment channel 2. By setting two partition plates 3, the treatment tank 1 is divided into a mixing chamber 4 and a sedimentation chamber 5. Wastewater and chemicals are stirred, mixed and flocculated in the mixing chamber 4 by the agitator 11. Then, it slowly rises from the bottom of the sedimentation chamber 5 over the two partition plates 3. During the rise, the flocculent settles, and the treated water flows out from the drain pipe 7. This application can operate continuously and has high work efficiency. By setting a pretreatment channel 2 and setting a chemical spraying component on the pretreatment channel 2, the chemical spraying component sprays and mixes chemicals in the pretreatment channel 2 before the wastewater enters the mixing chamber 4, ensuring that the chemicals can fully react during continuous water treatment. By setting a first filter screen 9, preliminary filtration can be carried out between the two partition plates 3. The first filter screen 9 can be lifted out of the treatment tank 1 for cleaning.

[0027] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the end of the pretreatment channel 2 furthest from the treatment tank 1 is connected to a wastewater pipe 13, and the bottom of the end of the pretreatment channel 2 closest to the wastewater pipe 13 is connected to a sewage tank 14. The bottom of the sewage tank 14 is connected to a discharge pipe 15. An installation groove 16 is provided on the inner wall of the pretreatment channel 2, and a second filter screen 12 is inserted into the inner side of the installation groove 16. It should be noted that during use, wastewater is introduced through the wastewater pipe 13, and some solid impurities in the wastewater are filtered by the second filter screen 12 and fall into the sewage tank 14. The wastewater is periodically discharged through the discharge pipe 15. The second filter screen 12 is inserted into the inner side of the installation groove 16 for easy installation and removal.

[0028] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the spraying assembly includes a medicine tank 17, with a delivery pipe 18 connected to the bottom of the tank 17. A conveying auger 19 is rotatably mounted inside the delivery pipe 18. One end of the conveying auger 19 is connected to a second motor 20. A spraying pipe 21 is connected to the bottom of one end of the delivery pipe 18. A tank cover 22 is mounted on the top of the delivery pipe 18, and a handle 23 is connected to the top of the cover 22. A rotating shaft 24 is rotatably mounted inside the delivery pipe 18. A deflector 25 is mounted on the outer wall of the rotating shaft 24. A drive belt 26 connects one end of the rotating shaft 24 to the conveying auger 19. Drive wheels are connected to both the rotating shaft 24 and the conveying auger 19. It should be noted that during use, the speed of the second motor 20 is controlled to adjust the dosing speed according to the wastewater flow rate. The rotating shaft 24 and the deflector 25 prevent the medicine powder from clogging.

[0029] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, shelves 27 are connected to the opposite side walls of the two partitions 3. The first filter screen 9 is installed on the shelf 27, and a pull rod 28 is fixedly connected to the top of the first filter screen 9. It should be noted that the first filter screen 9 can be pulled out by pulling up the pull rod 28 during use, so as to clean it.

[0030] In this embodiment, as Figures 1-6 As shown in the figure, the working process of the heavy metal wastewater treatment equipment provided in this embodiment is as follows:

[0031] Step 1: Wastewater is introduced through wastewater pipe 13, and impurities are filtered by the second filter screen 12 and fall into the sewage tank 14, and discharged periodically through discharge pipe 15;

[0032] Step 2: Control the second motor 20 to drive the conveying auger 19 to spread the medicine. After the medicine and wastewater are mixed in the pretreatment channel 2, they enter the mixing chamber 4. The first motor 10 drives the agitator 11 to stir and react fully.

[0033] Step 3: The wastewater then slowly rises from the bottom of the sedimentation tank 5, passing over the two partition plates 3. During the rise, the flocculent settles, and the treated water flows out from the drain pipe 7. The first filter screen 9 is pulled out periodically and the drain pipe 8 is opened for cleaning.

[0034] The above description is only a further 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 scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A heavy metal wastewater treatment device, comprising a treatment tank (1) and a pretreatment channel (2) connected to one side of the treatment tank (1), characterized in that, The top of the pretreatment channel (2) is equipped with a spraying assembly. The inner side of the treatment box (1) is divided into a mixing chamber (4) and a sedimentation chamber (5) by two partition plates (3). The partition plate (3) near the mixing chamber (4) is fixed on the bottom inner wall of the treatment box (1). The partition plate (3) near the sedimentation chamber (5) is connected to the bottom inner wall of the treatment box (1) via a passage (6). The side wall of the sedimentation chamber (5) is equipped with a drain pipe (7). The bottom of the sedimentation chamber (5) is connected to a sewage pipe (8). A first filter screen (9) is movably installed between the two partition plates (3). A first motor (10) is installed on the top of the mixing chamber (4). The output end of the first motor (10) is connected to a stirrer (11) located inside the mixing chamber (4). A second filter screen (12) is installed on the inner side of the pretreatment channel (2).

2. The heavy metal wastewater treatment equipment according to claim 1, characterized in that, The end of the pretreatment channel (2) away from the treatment box (1) is connected to a wastewater pipe (13).

3. The heavy metal wastewater treatment equipment according to claim 2, characterized in that, The bottom of the pretreatment channel (2) near the wastewater pipe (13) is connected to a sewage tank (14), and the bottom of the sewage tank (14) is connected to a discharge pipe (15).

4. The heavy metal wastewater treatment equipment according to claim 1, characterized in that, The pretreatment channel (2) has an installation groove (16) on its inner wall, and the second filter screen (12) is inserted into the inner side of the installation groove (16).

5. The heavy metal wastewater treatment equipment according to claim 1, characterized in that, The spraying assembly includes a medicine box (17), the bottom of which is connected to a conveying pipe (18), and a conveying auger (19) is rotatably installed on the inner side of the conveying pipe (18). One end of the conveying auger (19) is connected to a second motor (20).

6. The heavy metal wastewater treatment equipment according to claim 5, characterized in that, The bottom of one end of the delivery pipe (18) is connected to a spraying pipe (21).

7. The heavy metal wastewater treatment equipment according to claim 6, characterized in that, The top of the conveying pipe (18) is fitted with a box cover (22), and the top of the box cover (22) is connected to a handle (23).

8. The heavy metal wastewater treatment equipment according to claim 7, characterized in that, A rotating shaft (24) is rotatably mounted on the inner side of the conveying pipe (18). A lever (25) is mounted on the outer wall of the rotating shaft (24). A transmission belt (26) is connected between one end of the rotating shaft (24) and the conveying auger (19). A transmission wheel is connected to both the rotating shaft (24) and the conveying auger (19).

9. The heavy metal wastewater treatment equipment according to claim 1, characterized in that, The two partition plates (3) are each connected to a shelf (27) on their opposite sidewalls, and the first filter screen (9) is installed on the shelf (27).

10. A heavy metal wastewater treatment device according to claim 9, characterized in that, A pull rod (28) is fixedly connected to the top of the first filter screen (9).

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