Heavy metal sewage treatment equipment

Abstract

The utility model relates to the technical fields of sewage treatment especially, it is a kind of heavy metal sewage treatment equipment, its sewage passes through inlet pipe and enters the inside of sewage treatment pool, two groups of electrode plate form positive and negative, micro electrolysis material can occur oxidation-reduction reaction with multiple heavy metals under acidic, aeration condition, to convert heavy metal component in sewage into precipitable salt, precipitate removal, start stirring assembly, to make heavy metal sewage into electrode plate full contact, improve processing efficiency;Including sewage treatment pool, inlet pipe, electrode plate and support rod, the inlet pipe is installed in the sewage treatment pool input end, two groups of electrode plate are installed in the inside of sewage treatment pool by support rod, micro electrolysis filler is provided between two groups of electrode plate, two groups of electrode plate are connected with the low-voltage direct-current power line that can be regularly converted respectively, further include stirring assembly, and stirring assembly is installed on the sewage treatment pool, and the stirring assembly is used for the sewage stirring in the inside of sewage treatment pool.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment, and in particular to a heavy metal wastewater treatment device. Background Technology

[0002] Heavy metal wastewater treatment refers to the process of purifying wastewater to meet the water quality requirements for discharge into a water body or for reuse, so that the heavy metals contained in the wastewater meet the requirements.

[0003] In the prior art, patent document CN210814122U discloses a wastewater treatment environmental protection device, including a housing, characterized in that: the housing is provided with an opening, one end of the vertical plate of an L-shaped plate is hinged to one end of the housing corresponding to the opening, a handle is fixedly connected to the upper side of the horizontal plate of the L-shaped plate, a water inlet is provided on one side of the housing, a water outlet is provided on the other side of the housing, and a filtration mechanism is provided inside the housing.

[0004] During use, it was found that the device lacked a sewage mixing function, resulting in slow sewage treatment efficiency. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a heavy metal wastewater treatment device.

[0006] This utility model discloses a heavy metal wastewater treatment device, comprising a wastewater treatment tank, an inlet pipe, electrode plates, and a support rod. The inlet pipe is installed at the input end of the wastewater treatment tank. Two sets of electrode plates are installed inside the wastewater treatment tank via the support rod, and micro-electrolysis packing is disposed between the two sets of electrode plates. The two sets of electrode plates are respectively connected to a periodically switchable low-voltage DC power supply. A stirring assembly is also included, installed on the wastewater treatment tank, for stirring the wastewater inside the tank. Wastewater enters the wastewater treatment tank through the inlet pipe. The two sets of electrode plates form positive and negative electrodes. Under acidic and aeration conditions, the micro-electrolysis material can react with various heavy metals to form oxygen. The process involves a redox reaction to convert heavy metals in wastewater into precipitable salts for removal. Many wastewaters have a neutral or alkaline pH. Conventional micro-electrolysis equipment requires adding acid to adjust the pH, increasing operating costs. This equipment fills the space between electrode plates with micro-electrolysis material and applies a lower direct current to the plates, forming a three-dimensional micro-electrolysis system. Even under neutral or alkaline pH conditions, heavy metal ions can undergo a redox reaction with the three-dimensional micro-electrolysis material to generate precipitable salts, which are then removed after precipitation. Activating the stirring assembly ensures full contact between the heavy metal wastewater and the electrode plates, improving treatment efficiency.

[0007] Preferably, the mixing assembly includes a water pump, a return pipe, a return valve, a rotary joint, a hollow disc, L-shaped spray pipes, and a drainage assembly. The water pump input is connected to the wastewater treatment tank output, and the water pump output is equipped with a return pipe. The return pipe output is rotatably connected to the top of the hollow disc via the rotary joint. Multiple sets of L-shaped spray pipes are evenly spaced and inclined on the outer wall of the hollow disc. The drainage assembly input is connected to the outer wall of the return pipe. When the water pump is started and the return valve is opened, the wastewater inside the wastewater treatment tank enters the hollow disc through the return pipe. With the cooperation of the rotary joint, the hollow disc sprays water through the multiple sets of L-shaped spray pipes, causing the hollow disc to rotate. This allows the wastewater inside the wastewater treatment tank to flow up and down, improving wastewater treatment efficiency.

[0008] Preferably, the drainage assembly includes a drainage pipe, a drainage valve, a sedimentation tank, and an external drainage pipe. The inlet end of the drainage pipe is connected to the outer wall of the return pipe. A drainage valve is installed on the drainage pipe, and the outlet end of the drainage valve is connected to the inlet end of the sedimentation tank. An external drainage pipe is installed at the top of the sedimentation tank, and a filter screen is installed inside the external drainage pipe. A sludge removal assembly is installed at the bottom of the sedimentation tank. The drainage valve is opened and the return valve is closed, so that the sewage and sediment enter the sedimentation tank through the drainage pipe. The sediment is retained inside the sedimentation tank 5 through the filter screen, and the sewage is discharged through the external drainage pipe. After the operation is completed, the sediment is discharged through the sludge removal assembly.

[0009] Preferably, the slag discharge assembly includes a slag discharge pipe, a slag discharge valve, a housing, and a motor. A slag discharge pipe is provided at the bottom of the sedimentation tank, and a slag discharge valve is installed on the slag discharge pipe. The output end of the slag discharge pipe is connected to the input end of the housing. A motor is provided at the rear end of the housing, and a rotating shaft is installed inside the housing. Spiral blades are installed on the rotating shaft inside the housing, and the rotating shaft is connected to the output end of the motor. Opening the slag discharge valve and starting the motor allows the sediment to enter the housing through the slag discharge pipe and be discharged externally by the spiral blades, improving convenience.

[0010] Preferably, the sedimentation tank also includes a base, and multiple sets of bases are provided at the bottom of the sedimentation tank; the multiple sets of bases cooperate with each other to provide stable support for the sedimentation tank and improve stability.

[0011] Preferably, the number of L-shaped water spray pipes is eight.

[0012] Preferably, it also includes a support frame, which is installed at the top of the sewage treatment tank to reinforce the return pipe.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: Sewage enters the sewage treatment tank through the inlet pipe, and two sets of electrode plates form positive and negative electrodes. Under acidic and aeration conditions, the micro-electrolysis material can undergo oxidation-reduction reactions with various heavy metals, thereby converting the heavy metal components in the sewage into precipitable salts for precipitation and removal. Many wastewaters have a neutral or alkaline pH value. If conventional micro-electrolysis reaction equipment is used to remove heavy metals, acid needs to be added to adjust the sewage to acidity, which increases operating costs. This equipment fills the space between the electrode plates with micro-electrolysis material and applies a voltage lower than DC to the electrode plates to form a three-dimensional micro-electrolysis device. Under neutral or alkaline pH conditions, heavy metal ions can also undergo oxidation-reduction reactions with the three-dimensional micro-electrolysis material to generate precipitable salts, which are then removed after precipitation. The stirring component is activated to ensure that the heavy metal sewage fully contacts the electrode plates, thereby improving treatment efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0016] Figure 3 This is an exploded structural diagram of the present invention;

[0017] Figure 4 It is an enlarged structural diagram of the return pipe and water pump, etc.

[0018] Figure 5 This is an enlarged structural diagram of the sedimentation tank and motor, among other components.

[0019] The following are labels in the attached diagram: 1. Wastewater treatment tank; 2. Inlet pipe; 3. Electrode plate; 4. Support rod; 5. Water pump; 7. Return pipe; 8. Return valve; 9. Rotary joint; 10. Hollow disc; 11. L-shaped spray pipe; 12. Drain pipe; 13. Drain valve; 14. Sedimentation tank; 15. External drain pipe; 16. Slag discharge pipe; 17. Slag discharge valve; 18. Shell; 19. Motor; 20. Base; 21. Bracket. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0021] Example 1

[0022] like Figures 1 to 5As shown, the present invention provides a heavy metal wastewater treatment device, including a wastewater treatment tank 1, an inlet pipe 2, electrode plates 3, and a support rod 4. The inlet pipe 2 is installed at the input end of the wastewater treatment tank 1. Two sets of electrode plates 3 are installed inside the wastewater treatment tank 1 through the support rod 4. Micro-electrolysis packing is provided between the two sets of electrode plates 3. The two sets of electrode plates 3 are respectively connected to a low-voltage DC power supply line that can be periodically switched. The device also includes a stirring assembly. A stirring assembly is installed on the wastewater treatment tank 1. The stirring assembly is used for stirring the wastewater inside the wastewater treatment tank 1.

[0023] like Figure 3 and Figure 4 As shown, the stirring assembly includes a water pump 5, a return pipe 7, a return valve 8, a rotary joint 9, a hollow disc 10, an L-shaped water spray pipe 11, and a drainage assembly. The input end of the water pump 5 is connected to the output end of the sewage treatment tank 1. The output end of the water pump 5 is provided with a return pipe 7. The output end of the return pipe 7 is rotatably connected to the top of the hollow disc 10 through the rotary joint 9. Multiple sets of L-shaped water spray pipes 11 are inclined and spaced at equal intervals on the outer wall of the hollow disc 10. The input end of the drainage assembly is connected to the outer wall of the return pipe 7.

[0024] like Figure 4 As shown, the drainage assembly includes a drainage pipe 12, a drainage valve 13, a sedimentation tank 14, and an external drainage pipe 15. The inlet end of the drainage pipe 12 is connected to the outer wall of the return pipe 7. The drainage valve 13 is installed on the drainage pipe 12. The outlet end of the drainage valve 13 is connected to the inlet end of the sedimentation tank 14. The external drainage pipe 15 is installed at the top of the sedimentation tank 14. A filter screen is installed inside the external drainage pipe 15. A slag discharge assembly is provided at the bottom of the sedimentation tank 14.

[0025] In this embodiment, wastewater enters the wastewater treatment tank 1 through the inlet pipe 2. Two sets of electrode plates 3 form positive and negative electrodes. Under acidic and aeration conditions, the micro-electrolysis material can undergo oxidation-reduction reactions with various heavy metals, thereby converting the heavy metal components in the wastewater into precipitable salts for precipitation and removal. Many wastewaters have a neutral or alkaline pH value. If conventional micro-electrolysis equipment is used to remove heavy metals, acid needs to be added to adjust the wastewater to acidity, increasing operating costs. This equipment fills the space between the electrode plates with micro-electrolysis material and applies a voltage lower than DC to the electrode plates, forming a three-dimensional micro-electrolysis device. Under neutral or alkaline pH conditions, heavy metal ions can also undergo oxidation-reduction reactions with the three-dimensional micro-electrolysis material to generate precipitable salts. After final sedimentation and removal, the stirring assembly is started to ensure full contact between the heavy metal wastewater and the electrode plate 3. The water pump 5 is started and the return valve 8 is opened, allowing the wastewater inside the wastewater treatment tank 1 to enter the hollow disc 10 through the return pipe 7. The hollow disc 10 is then sprayed with water through multiple sets of L-shaped spray pipes 11 with the cooperation of the rotary joint 9, causing the hollow disc 10 to rotate and allowing the wastewater inside the wastewater treatment tank 1 to move up and down. The drain valve 13 is opened and the return valve 8 is closed, allowing the wastewater and sediment to enter the sedimentation tank 14 through the drain pipe 12. The sediment is retained inside the sedimentation tank 145 through the filter screen, and the wastewater is discharged through the external discharge pipe 15. After the operation is completed, the sediment is discharged through the sludge removal assembly.

[0026] Example 2

[0027] like Figures 1 to 5 As shown, the present invention provides a heavy metal wastewater treatment device, including a wastewater treatment tank 1, an inlet pipe 2, electrode plates 3, and a support rod 4. The inlet pipe 2 is installed at the input end of the wastewater treatment tank 1. Two sets of electrode plates 3 are installed inside the wastewater treatment tank 1 through the support rod 4. Micro-electrolysis packing is provided between the two sets of electrode plates 3. The two sets of electrode plates 3 are respectively connected to a low-voltage DC power supply line that can be periodically switched. The device also includes a stirring assembly. A stirring assembly is installed on the wastewater treatment tank 1. The stirring assembly is used for stirring the wastewater inside the wastewater treatment tank 1.

[0028] like Figure 3 and Figure 4 As shown, the stirring assembly includes a water pump 5, a return pipe 7, a return valve 8, a rotary joint 9, a hollow disc 10, an L-shaped water spray pipe 11, and a drainage assembly. The input end of the water pump 5 is connected to the output end of the sewage treatment tank 1. The output end of the water pump 5 is provided with a return pipe 7. The output end of the return pipe 7 is rotatably connected to the top of the hollow disc 10 through the rotary joint 9. Multiple sets of L-shaped water spray pipes 11 are inclined and spaced at equal intervals on the outer wall of the hollow disc 10. The input end of the drainage assembly is connected to the outer wall of the return pipe 7.

[0029] like Figure 4As shown, the drainage assembly includes a drainage pipe 12, a drainage valve 13, a sedimentation tank 14, and an external drainage pipe 15. The input end of the drainage pipe 12 is connected to the outer wall of the return pipe 7. The drainage valve 13 is installed on the drainage pipe 12. The output end of the drainage valve 13 is connected to the input end of the sedimentation tank 14. The external drainage pipe 15 is installed at the top of the sedimentation tank 14. A filter screen is installed inside the external drainage pipe 15. A slag discharge assembly is provided at the bottom of the sedimentation tank 14.

[0030] like Figure 5 As shown, the slag discharge assembly includes a slag discharge pipe 16, a slag discharge valve 17, a housing 18, and a motor 19. The bottom end of the sedimentation tank 14 is provided with a slag discharge pipe 16, and a slag discharge valve 17 is installed on the slag discharge pipe 16. The output end of the slag discharge pipe 16 is connected to the input end of the housing 18. The rear end of the housing 18 is provided with a motor 19. A rotating shaft is installed inside the housing 18. Spiral blades are installed on the rotating shaft inside the housing 18. The rotating shaft is connected to the output end of the motor 19.

[0031] It also includes a base 20 and a support 21, and the bottom of the sedimentation tank 14 is provided with multiple sets of bases 20;

[0032] A bracket 21 is installed at the top of the sewage treatment tank 1, and the bracket 21 reinforces the return pipe 7.

[0033] In this embodiment, wastewater enters the wastewater treatment tank 1 through the inlet pipe 2. Two sets of electrode plates 3 form positive and negative electrodes. Under acidic and aeration conditions, the micro-electrolysis material can undergo oxidation-reduction reactions with various heavy metals, thereby converting the heavy metal components in the wastewater into precipitable salts for precipitation and removal. Many wastewaters have a neutral or alkaline pH value. If conventional micro-electrolysis equipment is used to remove heavy metals, acid needs to be added to adjust the wastewater to acidity, increasing operating costs. This equipment fills the space between the electrode plates with micro-electrolysis material and applies a voltage lower than DC to the electrode plates, forming a three-dimensional micro-electrolysis device. Under neutral or alkaline pH conditions, heavy metal ions can also undergo oxidation-reduction reactions with the three-dimensional micro-electrolysis material to generate precipitable salts, which are then removed after precipitation. The stirring component is then activated. To ensure full contact between the heavy metal wastewater and the electrode plate 3, the water pump 5 is started, and the return valve 8 is opened, allowing the wastewater inside the wastewater treatment tank 1 to enter the hollow disc 10 through the return pipe 7. The hollow disc 10, with the cooperation of the rotary joint 9, is sprayed with water through multiple sets of L-shaped spray pipes 11, causing the hollow disc 10 to rotate and allowing the wastewater inside the wastewater treatment tank 1 to move up and down. The drain valve 13 is opened, and the return valve 8 is closed, allowing the wastewater and sediment to enter the sedimentation tank 14 through the drain pipe 12. The sediment is retained inside the sedimentation tank 145 through the filter screen, and the wastewater is discharged through the external discharge pipe 15. The slag discharge valve 17 is opened, and the motor 19 is started, allowing the sediment to enter the shell 18 through the slag discharge pipe 16 and be discharged externally through the spiral blades.

[0034] The electrode plate 3, micro-electrolysis packing material, and water pump 5 of the heavy metal wastewater treatment equipment of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A heavy metal wastewater treatment device, comprising a wastewater treatment tank (1), an inlet pipe (2), electrode plates (3), and a support rod (4), wherein the wastewater treatment tank (1) is equipped with an inlet pipe (2) at its input end, two sets of electrode plates (3) are installed inside the wastewater treatment tank (1) via the support rod (4), a micro-electrolysis packing is provided between the two sets of electrode plates (3), and the two sets of electrode plates (3) are respectively connected to a periodically switchable low-voltage DC power supply line, characterized in that, It also includes a stirring assembly, which is installed on the sewage treatment tank (1) and is used to stir the sewage inside the sewage treatment tank (1).

2. The heavy metal wastewater treatment equipment as described in claim 1, characterized in that, The mixing assembly includes a water pump (5), a return pipe (7), a return valve (8), a rotary joint (9), a hollow disc (10), an L-shaped spray pipe (11), and a drainage assembly. The input end of the water pump (5) is connected to the output end of the sewage treatment tank (1). The output end of the water pump (5) is provided with a return pipe (7). The output end of the return pipe (7) is rotatably connected to the top of the hollow disc (10) through the rotary joint (9). Multiple sets of L-shaped spray pipes (11) are inclined at equal intervals on the outer wall of the hollow disc (10). The input end of the drainage assembly is connected to the outer wall of the return pipe (7).

3. The heavy metal wastewater treatment equipment as described in claim 2, characterized in that, The drainage assembly includes a drain pipe (12), a drain valve (13), a sedimentation tank (14), and an external drain pipe (15). The inlet end of the drain pipe (12) is connected to the outer wall of the return pipe (7). A drain valve (13) is installed on the drain pipe (12). The outlet end of the drain valve (13) is connected to the inlet end of the sedimentation tank (14). An external drain pipe (15) is installed at the top of the sedimentation tank (14). A filter screen is installed inside the external drain pipe (15). A slag discharge assembly is provided at the bottom of the sedimentation tank (14).

4. The heavy metal wastewater treatment equipment as described in claim 3, characterized in that, The slag discharge assembly includes a slag discharge pipe (16), a slag discharge valve (17), a housing (18), and a motor (19). The bottom of the sedimentation tank (14) is provided with a slag discharge pipe (16), and a slag discharge valve (17) is installed on the slag discharge pipe (16). The output end of the slag discharge pipe (16) is connected to the input end of the housing (18). The rear end of the housing (18) is provided with a motor (19). A rotating shaft is installed inside the housing (18), and the spiral blades are installed on the rotating shaft inside the housing (18). The rotating shaft is connected to the output end of the motor (19).

5. The heavy metal wastewater treatment equipment as described in claim 3, characterized in that, It also includes a base (20), and multiple sets of bases (20) are provided at the bottom of the sedimentation tank (14).

6. The heavy metal wastewater treatment equipment as described in claim 2, characterized in that, The number of L-shaped water spray pipes (11) is eight.

7. The heavy metal wastewater treatment equipment as described in claim 2, characterized in that, It also includes a support (21), which is installed at the top of the sewage treatment tank (1) to reinforce the return pipe (7).

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