Treatment device for chemical wastewater containing heavy metals

Abstract

The utility model discloses a treatment device for chemical wastewater containing heavy metals, which relates to the technical field of chemical wastewater treatment, and adopts the technical scheme that the treatment device comprises a base, universal wheels are arranged at four corners of the bottom surface of the base, a liquid guide pipe A is communicated with the bottom surface of a mixing tank and the top surface of a sedimentation tank, and a valve is arranged on the side surface of the liquid guide pipe A; a liquid inlet pipe is arranged on the side, close to the valve, of the mixing pool, a filtering assembly is inserted in the position, close to the liquid inlet pipe, of the upper surface of the mixing pool, the filtering assembly comprises a filtering net inserted in the side wall of the mixing pool, a connecting plate is connected to the top face of the filtering net, a handle is connected to the top face of the connecting plate, and a discharging port is formed in the center of the top face of the mixing pool. Through cooperative use of the base and the universal wheels, the whole device is integrated and can be conveniently moved to different positions for use, and through the arranged stirring assembly, the mixing speed of a coagulant and wastewater is increased, the efficiency is improved, sufficient mixing of the wastewater and the coagulant is ensured, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical wastewater treatment, and more specifically, to a treatment device for chemical wastewater containing heavy metals. Background Art

[0002] Heavy metal wastewater refers to wastewater containing heavy metals discharged during the industrial production process of mining, machinery manufacturing, chemical industry, electronics, instrumentation, etc. Heavy metal wastewater (such as cadmium, nickel, mercury, zinc, etc.) is one of the most serious industrial wastewaters that pollute the environment and are most harmful to humans. Its water quality and quantity are related to the production process. Heavy metals in wastewater generally cannot be decomposed and destroyed, but can only be transferred to other locations and their physical and chemical forms. The treatment method is to first reform the production process, not use or use less toxic heavy metals, and treat them on-site at the production site (such as not discharging them from the production workshop). Chemical precipitation method, ion exchange method, etc. are often used for treatment. The heavy metals in the treated water are lower than the discharge standard and can be discharged or reused. The new heavy metal concentrated products are recycled or harmlessly treated as much as possible.

[0003] The existing chemical precipitation method for treating heavy metal wastewater is relatively large, occupies a large area, is not convenient for mobile use, and has low working efficiency. At the same time, when adding pH regulators and coagulants to the reaction tank, there is a lack of stirring mechanism, and the mixing is not sufficient, which affects the reaction effect, reduces the efficiency of heavy metal wastewater treatment, and has low practicality.

[0004] Therefore, in order to solve the above technical problems, the present application proposes a treatment device for chemical wastewater containing heavy metals. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a treatment device for chemical wastewater containing heavy metals.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a treatment device for chemical wastewater containing heavy metals, comprising a base, a sedimentation tank is arranged above the base, and connecting columns are arranged at the four corners of the upper surface of the sedimentation tank, the top surface of the connecting column is connected to a mixing tank, a secondary filter tank is also arranged on the upper surface of the base located on one side of the sedimentation tank, a water pump is arranged on the upper part between the sedimentation tank and the secondary filter tank, and the two ends of the water pump are respectively connected to a liquid guide pipe B connected to the sedimentation tank and the secondary filter tank, universal wheels are arranged at the four corners of the bottom surface of the base, a liquid guide pipe A is connected to the bottom surface of the mixing tank and the top surface of the sedimentation tank, a valve is arranged on the side of the liquid guide pipe A, a liquid inlet pipe is arranged on the side of the mixing tank close to the valve, and a filter assembly is plugged into the position of the upper surface of the mixing tank close to the liquid inlet pipe, the filter assembly comprises a filter screen plugged into the side wall of the mixing tank, a connecting plate is connected to the top surface of the filter screen, and a handle is connected to the top surface of the connecting plate;

[0007] A discharge port is provided at the center of the top surface of the mixing tank, and a stirring assembly is provided on the side of the mixing tank away from the liquid inlet pipe, the stirring assembly includes a motor connected to the side of the mixing tank, the output end of the motor is connected to a transmission shaft rotatably connected to the side wall of the mixing tank, a plurality of connecting rings are evenly connected to the transmission shaft, and a plurality of stirring blades are evenly provided on the side of the single connecting ring along the circumferential direction, and the stirring blades are curved, so that the whole device is integrated through the use of the provided base and the universal wheel, and is convenient to be moved to different positions for use, and the provided stirring assembly accelerates the mixing speed of the coagulant and the wastewater, improves the efficiency, and ensures the sufficient mixing of the wastewater and the coagulant.

[0008] Preferably, a liquid collecting tank is provided inside the sedimentation tank below the liquid guiding pipe A, a rectifying wall is provided on one side of the liquid collecting tank, a sludge discharge pipe is connected to the bottom of the sedimentation tank, a plurality of perforated sludge collecting pipes and a plurality of sludge hoppers are provided above the sludge discharge pipe, a baffle is installed above the sludge hopper, a plurality of inclined plates are provided above the baffle, and the sedimentation tank is provided, thereby facilitating solid-liquid separation of the mixed waste liquid, improving the purification efficiency of wastewater, and reducing the burden of subsequent treatment equipment.

[0009] Preferably, a first filter membrane is provided in the upper half of the interior of the secondary filter tank, and a second filter membrane is provided below the first filter membrane, so as to further perform multi-stage filtration on particles, suspended matter, organic matter, inorganic matter, etc. in the wastewater, ensuring that the treated wastewater meets the discharge standards and reducing the impact on the environment and human health.

[0010] Preferably, the size of the filter screen is larger than the diameter of the liquid inlet pipe, and the filter screen is made of a hard material, which is conducive to the filter screen to effectively filter larger particles in the wastewater and improve the efficiency of wastewater treatment.

[0011] Preferably, an output pipe is provided at the bottom of the side of the secondary filter tank, so as to facilitate the recycling of filtered water.

[0012] Preferably, an inspection door is provided on the top surface of the secondary filter tank, through which the first filter membrane and the second filter membrane can be easily replaced, thereby ensuring effective filtration of wastewater.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, a stirring assembly is provided and a motor is used to drive the transmission shaft to rotate, thereby driving the rotation of the connecting ring and the stirring blades, thereby accelerating the mixing speed of the waste liquid and the coagulant, ensuring that the two are fully mixed and improving the efficiency. In addition, the curved stirring blades are provided so that the material is more evenly stressed during the stirring process, thereby achieving a better stirring effect.

[0015] 2. In the utility model, the entire wastewater treatment device is integrated by using the provided base and universal wheels, which makes it easy to move to different locations for use, thereby improving the efficiency and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the stirring assembly in the utility model;

[0020] Figure 4 It is a structural schematic diagram of the sedimentation tank in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the secondary filtration tank in the utility model;

[0022] Figure 6 It is a structural schematic diagram of the filter assembly in the utility model.

[0023] 1. Base; 2. Mixing tank; 201. Liquid inlet pipe; 202. Filter assembly; 2021. Handle; 2022. Connecting plate; 2023. Filter screen; 203. Discharge port; 3. Sedimentation tank; 301. Liquid collecting tank; 302. Rectification wall; 303. Inclined plate; 304. Baffle plate; 305. Perforated mud collecting pipe; 306. Mud discharge pipe; 307. Sludge hopper; 4. Secondary filtration tank; 401. Inspection door; 402. First filter membrane; 403. Second filter membrane; 5. Universal wheel; 6. Stirring assembly; 601. Motor; 602. Drive shaft; 603. Connecting ring; 604. Stirring blade; 7. Connecting column; 8. Liquid guide pipe A; 9. Valve; 10. Output pipe; 11. Water pump; 12. Liquid guide pipe B. DETAILED DESCRIPTION

[0024] like Figure 1-6As shown, the utility model provides a treatment device for chemical wastewater containing heavy metals, including a base 1, a sedimentation tank 3 is arranged above the base 1, and connecting columns 7 are arranged at the four corners of the upper surface of the sedimentation tank 3, and the top surface of the connecting column 7 is connected to the mixing tank 2, and a secondary filter tank 4 is also arranged on the upper surface of the base 1 on one side of the sedimentation tank 3, and a water pump 11 is arranged on the upper part between the sedimentation tank 3 and the secondary filter tank 4, and the two ends of the water pump 11 are respectively connected to the liquid guide pipe B12 which is connected to the sedimentation tank 3 and the secondary filter tank 4, and the bottom Universal wheels 5 are provided at the four corners of the bottom surface of the seat 1. A liquid guide tube A8 is connected through the bottom surface of the mixing tank 2 and the top surface of the sedimentation tank 3. A valve 9 is provided on the side of the liquid guide tube A8. A liquid inlet pipe 201 is provided on the side of the mixing tank 2 close to the valve 9. A filter assembly 202 is plugged into the position of the upper surface of the mixing tank 2 close to the liquid inlet pipe 201. The filter assembly 202 includes a filter screen 2023 plugged into the side wall of the mixing tank 2. The top surface of the filter screen 2023 is connected to a connecting plate 2022. The top surface of the connecting plate 2022 is connected to a handle 2021.

[0025] A discharge port 203 is provided at the center of the top surface of the mixing tank 2, and a stirring assembly 6 is provided on the side of the mixing tank 2 away from the liquid inlet pipe 201. The stirring assembly 6 includes a motor 601 connected to the side of the mixing tank 2, and the output end of the motor 601 is connected to a transmission shaft 602 rotatably connected to the side wall of the mixing tank 2. A plurality of connecting rings 603 are evenly connected to the transmission shaft 602, and a plurality of stirring blades 604 are evenly provided along the circumferential direction on the side of a single connecting ring 603. The stirring blades 604 are curved. When in use, heavy metal wastewater is discharged into the mixing tank 2 through the liquid inlet pipe 201, and the wastewater is blocked from larger particles outside by the filter screen 2023. The wastewater after the initial filtration enters the mixing tank 2, and a coagulant, a pH regulator, etc. are added to the mixing tank 2 through the discharge port 203. Start the motor 601, and the output end of the motor 601 drives the transmission shaft 602 to rotate, thereby driving the connecting ring 603 and the stirring blade 604 to rotate. After sufficient stirring, turn off the motor 601 and open the valve 9, so that the waste liquid in the mixing tank 2 flows into the sedimentation tank 3 through the liquid guide tube A8 for sedimentation, and then performs subsequent filtration treatment. When the filter screen 2023 needs to be replaced, hold the handle 2021 and pull it upward to remove the connecting plate 2022 and the filter screen 2023 for cleaning and replacement. The effect is that the entire device is integrated through the use of the provided base 1 and the universal wheel 5, which is convenient for moving to different positions for use, and the provided stirring component 6 accelerates the mixing speed of the coagulant and the wastewater, improves the efficiency, and ensures sufficient mixing of the wastewater and the coagulant.

[0026] A liquid collecting tank 301 is arranged inside the sedimentation tank 3 below the liquid guiding pipe A8, a rectifying wall 302 is arranged on one side of the liquid collecting tank 301, a sludge discharge pipe 306 is connected to the bottom of the sedimentation tank 3, a plurality of perforated sludge collecting pipes 305 and a plurality of sludge hoppers 307 are arranged above the sludge discharge pipe 306, a baffle plate 304 is installed above the sludge hopper 307, a plurality of inclined plates 303 are arranged above the baffle plate 304, after the mixed waste liquid flows into the sedimentation tank 3, it passes through the sedimentation tank 3, thereby facilitating solid-liquid separation of the mixed waste liquid, improving the purification efficiency of wastewater, and reducing the burden of subsequent treatment equipment.

[0027] A first filter membrane 402 is provided in the upper half of the secondary filter tank 4, and a second filter membrane 403 is provided below the first filter membrane 402. After the waste liquid is further precipitated in the sedimentation tank 3, the pump 11 is started to pump the waste liquid at the top of the sedimentation tank 3 into the secondary filter tank 4 through the liquid guide tube B12. The waste liquid is filtered again through the first filter membrane 402 and the second filter membrane 403 in turn, thereby further performing multi-stage filtration on the particles, suspended matter, organic matter, inorganic matter, etc. in the waste water to ensure that the treated waste water meets the discharge standards and reduces the impact on the environment and human health.

[0028] The size of the filter screen 2023 is larger than the diameter of the liquid inlet pipe 201, and the filter screen 2023 is made of a hard material, which is conducive to the filter screen 2023 to effectively filter larger particles in the wastewater, thereby improving the efficiency of wastewater treatment.

[0029] An output pipe 10 is provided at the bottom of the side of the secondary filter tank 4, so as to facilitate the recycling of filtered water.

[0030] An inspection door 401 is provided on the top surface of the secondary filter tank 4, through which the first filter membrane 402 and the second filter membrane 403 can be easily replaced, thereby ensuring effective filtration of wastewater.

[0031] Working principle: When in use, heavy metal wastewater is discharged into the mixing tank 2 through the liquid inlet pipe 201, and the wastewater passes through the filter 2023 to block larger particles outside. The wastewater after the initial filtration enters the mixing tank 2, and coagulants, pH regulators, etc. are added to the mixing tank 2 through the discharge port 203. The motor 601 is started, and the output end of the motor 601 drives the transmission shaft 602 to rotate, thereby driving the connecting ring 603 and the stirring blade 604 to rotate. After sufficient stirring, the motor 601 is turned off and the valve 9 is opened, so that the waste liquid in the mixing tank 2 flows into the sedimentation tank 3 through the liquid guide pipe A8 for sedimentation, and then undergoes subsequent filtration treatment. When the filter needs to be replaced At 2023, hold the handle 2021 and pull it upwards to remove the connecting plate 2022 and the filter screen 2023 for cleaning and replacement. After the solid-liquid separation treatment of the waste liquid in the sedimentation tank 3, the precipitated sludge is discharged through the sludge discharge pipe 306, and the water pump 11 is started to pump the liquid on the top of the sedimentation tank 3 into the secondary filter tank 4 through the liquid guide pipe B12. The waste liquid is filtered again through the first filter membrane 402 and the second filter membrane 403 in turn, thereby further performing multi-stage filtration on the particles, suspended matter, organic matter, inorganic matter, etc. in the wastewater to ensure that the treated wastewater meets the discharge standards and reduces the impact on the environment and human health.

[0032] The above description is only a preferred embodiment of the utility model and does not limit the utility model in any form. Any ordinary technician in the industry can smoothly implement the utility model as shown in the drawings of the specification and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the utility model using the technical content disclosed above are all equivalent embodiments of the utility model. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the utility model are still within the protection scope of the technical solution of the utility model.

Claims

1. A treatment device for chemical wastewater containing heavy metals, comprising a base (1), a sedimentation tank (3) is arranged above the base (1), and connecting columns (7) are arranged at four corners of the upper surface of the sedimentation tank (3), and the top surface of the connecting column (7) is connected to a mixing tank (2), and a secondary filter tank (4) is also arranged on the upper surface of the base (1) on one side of the sedimentation tank (3), and a water pump (11) is arranged on the upper part between the sedimentation tank (3) and the secondary filter tank (4), and the two ends of the water pump (11) are respectively connected to a liquid guide pipe B (12) that is connected to the sedimentation tank (3) and the secondary filter tank (4), characterized in that: Universal wheels (5) are arranged at the four corners of the bottom surface of the base (1); a liquid guide tube A (8) is connected through the bottom surface of the mixing tank (2) and the top surface of the sedimentation tank (3); a valve (9) is arranged on the side of the liquid guide tube A (8); a liquid inlet pipe (201) is arranged on the side of the mixing tank (2) close to the valve (9); and a filter assembly (202) is inserted at a position close to the liquid inlet pipe (201) on the upper surface of the mixing tank (2); the filter assembly (202) comprises a filter screen (2023) inserted into the side wall of the mixing tank (2); the top surface of the filter screen (2023 is connected to a connecting plate (2022); and the top surface of the connecting plate (222) is connected to a handle (221); A discharge port (203) is arranged at the center of the top surface of the mixing tank (2), and a stirring assembly (6) is arranged on the side of the mixing tank (2) away from the liquid inlet pipe (201), wherein the stirring assembly (6) comprises a motor (601) connected to the side of the mixing tank (2), and the output end of the motor (601) is connected to a transmission shaft (602) rotatably connected to the side wall of the mixing tank (2), and a plurality of connecting rings (603) are evenly connected to the transmission shaft (602), and a plurality of stirring blades (604) are evenly arranged on the side of the single connecting ring (603) along the circumferential direction, and the stirring blades (604) are curved.

2. The device for treating chemical wastewater containing heavy metals according to claim 1, characterized in that: A liquid collecting tank (301) is arranged inside the sedimentation tank (3) below the liquid guiding pipe A (8), a rectifying wall (302) is arranged on one side of the liquid collecting tank (301), a mud discharge pipe (306) is connected to the bottom of the sedimentation tank (3), a plurality of perforated mud collecting pipes (305) and a plurality of mud hoppers (307) are arranged above the mud discharge pipe (306), a baffle (304) is installed above the mud hopper (307), and a plurality of inclined plates (303) are arranged above the baffle (304).

3. A treatment device for chemical wastewater containing heavy metals according to claim 2, characterized in that: A first filter membrane (402) is arranged in the upper half of the interior of the secondary filter pool (4), and a second filter membrane (403) is arranged below the first filter membrane (402).

4. A treatment device for chemical wastewater containing heavy metals according to claim 3, characterized in that: The size of the filter screen (2023) is larger than the diameter of the liquid inlet pipe (201), and the filter screen (2023) is made of a hard material.

5. A treatment device for chemical wastewater containing heavy metals according to claim 4, characterized in that: An output pipe (10) is provided at the bottom of the side of the secondary filtering tank (4).

6. The device for treating chemical wastewater containing heavy metals according to claim 5, characterized in that: The top surface of the secondary filtration tank (4) is provided with an inspection door (401).

Images