Heavy metal recovery device

Abstract

The utility model discloses a heavy metal recovery device which comprises a shell, the interior of the shell is divided into three cavities through partition walls, the three cavities are a sedimentation tank, a flocculation tank and a static sedimentation tank in sequence from right to left, a first stirring device is arranged in the sedimentation tank, a second stirring device is arranged in the flocculation tank, and a third stirring device is arranged in the static sedimentation tank. A plurality of baffle plates are arranged at the upper end of the barrier wall, a water inlet and a precipitant inlet are arranged below the baffle plates in the sedimentation tank, and a flocculant inlet is arranged below the baffle plates in the flocculation tank. The device has the beneficial effects that the first stirring device accelerates the fusion of wastewater and a precipitant, accelerates the reaction of the precipitant and metal ions and enters the flocculation tank, the second stirring device accelerates the reaction of the flocculating agent and the metal ions to form flocs, the flocs finally reach the static sedimentation tank, and metal precipitates rapidly descend through an electromagnet; according to the sewage treatment device, the uniform fusion of the liquid medicine and the sewage can be accelerated, and internal fine sediments can be quickly and effectively removed.

Description

Technical Field

[0001] The utility model relates to the field of industrial waste water, in particular to a heavy metal recovery device. Background Art

[0002] In recent years, with the rapid development of industrial production, the wanton discharge of heavy metal industrial wastewater has caused serious pollution to the ecological environment, directly threatening the living environment of human beings. During sewage treatment, heavy metals are precipitated and precipitated by alkaline substances, precipitated and attached to foam by organic compounds, adsorbed by ion exchangers or extracted by solvents. This is the common method for heavy metal industrial wastewater treatment. The liquid treatment method is the most widely used. However, during sewage treatment, the existing technology is slow in the uniform fusion of liquid medicine and sewage, and the fine sediment inside cannot be centrally treated. In addition, the cleaning efficiency is slow and multiple processes are required. Utility Model Content

[0003] The utility model aims to provide a heavy metal recovery device to solve the above-mentioned technical problems that the uniform fusion of the liquid medicine and the sewage is slow and the fine sediment inside cannot be centrally processed.

[0004] In order to solve the above technical problems, the utility model provides a heavy metal recovery device, which includes a shell, characterized in that: the shell is divided into three chambers by a barrier wall, and the three chambers are a sedimentation tank, a flocculation tank and a static sedimentation tank from right to left, a first stirring device is provided in the sedimentation tank, a second stirring device is provided in the flocculation tank, a plurality of baffles are provided on the upper end of the barrier wall, a water inlet and a precipitant inlet are provided in the sedimentation tank below the baffle, and a flocculant inlet is provided in the flocculation tank below the baffle.

[0005] Furthermore, the baffle forms an angle of 60° with the barrier wall.

[0006] Furthermore, an electromagnet is arranged below the static sedimentation tank.

[0007] Furthermore, a vibration motor is arranged below the shell, compression springs are arranged at four corners of the shell, and a bottom plate is arranged below the compression springs.

[0008] Furthermore, a first dosing pump is disposed at one end of the precipitant inlet, and a second dosing pump is disposed at one end of the flocculant inlet.

[0009] Furthermore, the first stirring device includes a first drive motor, a first transmission shaft and a first stirring plate, and the first stirring plate is located below the baffle in the sedimentation tank. The second stirring device includes a second drive motor, a second transmission shaft and a second stirring plate, and the second stirring plate is located below the baffle in the flocculation tank.

[0010] The beneficial effects of the utility model are as follows: compared with the prior art, a heavy metal recovery device opens a water inlet and a precipitant inlet, opens a first stirring device, and the first stirring device is connected to a first stirring plate through a first transmission shaft for rotation, thereby accelerating the fusion of wastewater and precipitant, accelerating the dissolution rate of the precipitant and accelerating the reaction between the precipitant and metal ions, forming salts or hydroxides with lower solubility and precipitating, and then entering a flocculation tank; a second stirring device is connected to a second stirring plate through a second transmission shaft for rotation, thereby accelerating the reaction between the flocculant and the metal ions, and adding a polyacrylamide flocculant through the flocculant inlet to cause heavy metal pollutants that are not easy to precipitate in the water body to form flocs, thereby achieving the purpose of removing heavy metals, and finally reaching a static sedimentation tank, completing the rapid descent of metal precipitates through an electromagnet, and finally discharging through a water outlet, and regularly starting a vibration motor to remove attachments in the shell, accelerating the uniform fusion of the liquid medicine and sewage, and quickly and effectively removing fine sediments inside. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The figure is a schematic diagram of the cross-sectional structure of a heavy metal recovery device.

[0012] Figure 2 This is a schematic diagram of the top view of the structure of a heavy metal recovery device.

[0013] Figure 3 This is a schematic diagram of the three-dimensional structure of a heavy metal recovery device.

[0014] Wherein: 1. Shell; 2. Base; 3. Water inlet; 4. Water outlet; 5. Sedimentation tank; 51. First stirring device; 511. First drive motor; 521. First transmission shaft; 531. First stirring plate; 6. Flocculation tank; 61. Second stirring device; 611. Second drive motor; 621. Second transmission shaft; 631. Second stirring plate; 7. Settling tank; 8. Baffle; 9. Vibration motor; 10. Electromagnet; 11. Compression spring; 12. Slope; 13. Mud discharge pipe; 14. Sedimentation agent inlet; 141. First medicine pump; 15. Flocculant inlet; 151. Second medicine pump; 16. Barrier wall; 17. Barrier plate. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiment is only one embodiment of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0016] In order to make the objectives, technical solutions and advantages of the present application more clear, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0017] In the following description, references to "one embodiment", "an embodiment", "an example", "an example", etc. indicate that the embodiment or example described in this way may include specific features, structures, characteristics, properties, elements or limitations, but not every embodiment or example necessarily includes the specific features, structures, characteristics, properties, elements or limitations. In addition, repeated use of the phrase "according to one embodiment of the present application" may refer to the same embodiment, but does not necessarily refer to the same embodiment.

[0018] like Figure 1 As shown, the housing 1 is divided into three chambers by a barrier wall 16. The three chambers are a sedimentation tank 5, a flocculation tank 6 and a static sedimentation tank 7 from right to left. A first stirring device 51 is provided in the sedimentation tank 5, a second stirring device 61 is provided in the flocculation tank 6, and a plurality of baffles 8 are provided at the upper end of the barrier wall 16. A water inlet 3 and a precipitant inlet 14 are provided below the baffle 8 in the sedimentation tank 5, and a flocculant inlet 15 is provided below the baffle 8 in the flocculation tank 6. The precipitant is sodium sulfide (Na2S), and the removal rate of copper and zinc is 99.99%. Lead (99.75%) is effectively removed. The flocculant is polyacrylamide flocculant, which enriches heavy metal ions in flocs, thereby reducing the concentration of heavy metal ions in water. At the same time, the adsorption performance of polyacrylamide can be used to further remove heavy metal ions.

[0019] The baffle plate 8 and the barrier wall 16 form an angle of 60°, which changes the flow direction of the stirred liquid, blocks the sediment, and improves the heavy metal recovery efficiency.

[0020] An electromagnet 10 is arranged below the static sedimentation tank 7. When the mud is discharged through the mud discharge pipe 13, the electromagnet 10 is turned off. When the mud discharge pipe 13 is closed, the electromagnet 10 is started, and the metal precipitate is rapidly dropped by the electromagnet 10.

[0021] A vibration motor 9 is arranged under the shell 1, and compression springs 11 are respectively arranged at the four corners of the shell 1. A base 2 is arranged under the compression spring 11. The model of the vibration motor 9 is YZ1-20-4, which is the existing technology and will not be described in detail. A baffle plate 17 is arranged in the static sedimentation tank 7 inside the shell 1, and its function is to change the direction of the fluid so that the content of heavy metal ions is further reduced after the fluid is adsorbed by the electromagnet 10, thereby improving the removal rate of heavy metal ions. The sediment attached to the baffle wall 16 and the baffle plate 17 as well as the baffle plate 8, the first stirring plate 531 and the second stirring plate 631 is shaken off by the vibration motor 9 and discharged through the mud discharge pipe 13.

[0022] A first dosing pump 141 is disposed at one end of the precipitant inlet 14 , and the rate of the precipitant is controlled by the first dosing pump 141 . A second dosing pump 151 is disposed at one end of the flocculant inlet 15 , and the rate of the flocculant is controlled by the second dosing pump 151 .

[0023] A water outlet 4 is provided above the baffle 8 in the sedimentation tank 7, and a valve is provided on the water outlet 4 to control the opening and closing of the water outlet 4. Mud discharge pipes 13 are respectively provided at the bottom of the three chambers, and valves are provided on the mud discharge pipes 13 to control the opening and closing of the mud discharge pipes 13. A slope 12 is provided at the bottom of the barrier wall 16 to prevent sediment from accumulating in the corners through the slope 12, thereby improving the sediment discharge efficiency.

[0024] The first stirring device 51 includes a first driving motor 511, a first transmission shaft 521 and a first stirring plate 531. The first transmission shaft 521 runs through the upper part of the sedimentation tank 5. The upper end of the first transmission shaft 521 is connected to the first driving motor 511, and the lower end of the first transmission shaft 521 is connected to the first stirring plate 531. The first stirring plate 531 is located below the baffle 8 in the sedimentation tank 5. The second stirring device 61 includes a second driving motor 611, a second transmission shaft 621 and a second stirring plate 631. The second stirring plate 631 is located below the baffle 8 in the sedimentation tank 5. Below the baffle 8 in the flocculation tank 6, the second transmission shaft 621 passes through the upper part of the flocculation tank 6, the upper end of the second transmission shaft 621 is connected to the second drive motor 611, and the lower end of the second transmission shaft 621 is connected to the second stirring plate 631. The first drive motor 511 and the second drive motor 611 are both Y180M-2 models. This is the prior art and will not be elaborated on. The first stirring device 51 and the second stirring device 61 can enable the reagent to quickly and completely contact with the heavy metal wastewater, thereby improving the sedimentation and flocculation efficiency.

[0025] Working process: open the water inlet 3 and the precipitant inlet 14, open the first stirring device 51, the first stirring device 51 is connected to the first stirring plate 531 through the first transmission shaft 521 for rotation, accelerates the fusion of wastewater and precipitant, accelerates the dissolution rate of the precipitant and accelerates the reaction between the precipitant and metal ions, forms salts or hydroxides with lower solubility and precipitates, and then enters the flocculation tank 6, the second stirring device 61 is connected to the second stirring plate 631 through the second transmission shaft 621 for rotation, accelerates the reaction between the flocculant and the metal ions, and adds polyacrylamide flocculant through the flocculant inlet 15 to cause heavy metal pollutants that are not easy to precipitate in the water body to form flocs, thereby achieving the purpose of removing heavy metals, and finally reaches the static sedimentation tank 7, completes the rapid descent of metal precipitates through the electromagnet 10, and finally is discharged through the water outlet 4, and the vibration motor 9 is started regularly to remove the attachments in the shell 1.

[0026] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heavy metal recovery device, comprising a housing, characterized in that: The shell is divided into three chambers by a barrier wall. The three chambers are a sedimentation tank, a flocculation tank and a static sedimentation tank from right to left. A first stirring device is provided in the sedimentation tank, a second stirring device is provided in the flocculation tank, a plurality of baffles are provided at the upper end of the barrier wall, a water inlet and a precipitant inlet are provided below the baffles in the sedimentation tank, and a flocculant inlet is provided below the baffles in the flocculation tank.

2. A heavy metal recovery device according to claim 1, characterized in that: The baffle forms an angle of 60° with the barrier wall.

3. A heavy metal recovery device according to claim 1, characterized in that: An electromagnet is arranged below the static sedimentation tank.

4. A heavy metal recovery device according to claim 1, characterized in that: A vibration motor is arranged below the shell, compression springs are arranged at four corners of the shell respectively, and a bottom plate is arranged below the compression springs.

5. A heavy metal recovery device according to claim 1, characterized in that: A first dosing pump is disposed at one end of the precipitant inlet, and a second dosing pump is disposed at one end of the flocculant inlet.

6. A heavy metal recovery device according to claim 1, characterized in that: A water outlet is arranged above the baffle in the static sedimentation tank, mud discharge pipes are arranged at the bottoms of the three chambers respectively, and a slope is arranged at the bottom of the barrier wall.

7. A heavy metal recovery device according to claim 1, characterized in that: The first stirring device includes a first driving motor, a first transmission shaft and a first stirring plate, and the first stirring plate is located below the baffle in the sedimentation tank. The second stirring device includes a second driving motor, a second transmission shaft and a second stirring plate, and the second stirring plate is located below the baffle in the flocculation tank.

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