Landfill leachate concentrated solution treatment device

Abstract

The utility model discloses a landfill leachate concentrated solution treatment device which comprises a treatment rack, a physicochemical treatment mechanism is fixedly installed on one side of the bottom end of the treatment rack, an electrodialysis machine shell is fixedly installed on the other side of the bottom end of the treatment rack, and a first pump body located on one side of the physicochemical treatment mechanism is fixedly installed on the treatment rack. A first pump body located on one side of the electrodialysis machine shell is fixedly installed on the treatment machine frame, a second pump body located on one side of the electrodialysis machine shell is fixedly installed on the treatment machine frame, and the physicochemical treatment mechanism comprises a physicochemical machine shell, a first feeding hopper and a second feeding hopper. According to the characteristics of the landfill leachate concentrated solution, parameter optimization is carried out on the electrodialysis treatment technology, the treatment efficiency is improved, the electrodialysis treatment technology is successfully applied to actual engineering, and the treatment requirement of people on the landfill leachate is met.

Description

Technical Field

[0001] The utility model relates to the technical field of landfill leachate treatment, in particular to a device for treating landfill leachate concentrate. Background Technique

[0002] The leachate generated during landfill and transfer compression contains high concentrations of organic matter and inorganic salts. If not properly treated, it will cause serious pollution to the environment. The pollutants in the concentrate pose a serious threat to the environment and human health. If directly discharged without treatment, it will cause serious environmental pollution. With the improvement of environmental protection requirements, the treatment technology for landfill leachate concentrate has been continuously innovated, and the physical and chemical treatment plus electrodialysis technology has become an effective solution.

[0003] However, the traditional treatment device has the following disadvantages:

[0004] When the traditional treatment device treats landfill leachate, due to the complex composition and high pollutant concentration of the concentrate, it is difficult for the traditional treatment method to achieve an ideal treatment effect. At the same time, the problem of secondary pollution generated during the treatment process also needs to be solved urgently. Content of the Utility Model

[0005] The purpose of the utility model is to provide a device for treating landfill leachate concentrate, so as to solve the problems that when the traditional treatment device treats landfill leachate, due to the complex composition and high pollutant concentration of the concentrate, it is difficult for the traditional treatment method to achieve an ideal treatment effect, and at the same time, the problem of secondary pollution generated during the treatment process also needs to be solved urgently as mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A device for treating landfill leachate concentrate, including a treatment frame. One side of the bottom end of the treatment frame is fixedly installed with a physical and chemical treatment mechanism. The other side of the bottom end of the treatment frame is fixedly installed with an electrodialysis casing. The middle part of the bottom end of the treatment frame is fixedly installed with an electrocoagulation casing. A first pump body is fixedly installed on the treatment frame on one side of the physical and chemical treatment mechanism. A second pump body is fixedly installed on the treatment frame on one side of the electrodialysis casing. The physical and chemical treatment mechanism includes a physical and chemical casing, a first feed hopper and a second feed hopper. The bottom ends of the first feed hopper and the second feed hopper are respectively fixedly communicated with both sides of the top end of the physical and chemical casing. A stirring member is fixedly installed between the first feed hopper and the second feed hopper.

[0007] Preferably, the stirring member includes a motor base and a stepper motor. The top end of the motor base is fixedly connected to the bottom end of the stepper motor. The bottom end of the motor base is provided with a fixed platform. The top end of the fixed platform is rotatably connected with a driving bevel gear. Two driven bevel gears are meshed and connected to the outside of the driving bevel gear. First stirring paddles extending into the first feed hopper and the second feed hopper are respectively fixedly installed in the middle of the two driven bevel gears. One ends of the two first stirring paddles are respectively rotatably connected to one side of the inner wall of the first feed hopper and one side of the inner wall of the second feed hopper. The output end of the stepper motor is fixedly installed with a second stirring paddle extending into the physicochemical machine housing. One end of the second stirring paddle is fixedly connected to the middle of the driving bevel gear. After the stepper motor is powered on and started, the stepper motor drives the second stirring paddle and the driving bevel gear to rotate. The driving bevel gear contacts the driven bevel gears, and the driven bevel gears drive the first stirring paddles to rotate. The first stirring paddles respectively stir the injected permeate and medicament. For example, a precipitant and a precipitant are injected into the second feed hopper. The precipitation method is to add an appropriate amount of precipitant to the landfill leachate to form insoluble precipitates of heavy metal ions, thereby achieving the removal method. The precipitants include lime, sodium hydroxide, sulfides, etc. The appropriate precipitant can be selected according to the types and concentrations of heavy metal ions in the landfill leachate. The adsorption method is a method of removing organic matter in the landfill leachate by using an adsorbent with high adsorption performance through physical or chemical adsorption. The adsorbents include activated carbon, resin, zeolite, etc., which have the advantages of large adsorption capacity and fast adsorption speed.

[0008] Preferably, both ends of the motor base are respectively fixedly connected to the top end of one side of the first feed hopper and the top end of one side of the second feed hopper. Both ends of the fixed platform are respectively fixedly connected to the bottom end of one side of the first feed hopper and the bottom end of one side of the second feed hopper. The stirring member is installed between the first feed hopper and the second feed hopper through the motor base and the fixed platform.

[0009] Preferably, support legs are fixedly installed at the four corners of the bottom end of the physicochemical machine housing. The bottom ends of the four support legs are all fixedly connected to the treatment frame. The physicochemical treatment mechanism is installed on the treatment frame through the support legs.

[0010] Preferably, a PH dosing pipeline is fixedly communicated with the top end of one side of the electrodialysis machine housing, and a medicament dosing pipeline is fixedly communicated with the top end of the other side of the electrodialysis machine housing. The user injects a PH regulator into the electrodialysis machine housing through the PH dosing pipeline, and the user injects a medicament into the electrodialysis machine housing through the medicament dosing pipeline. For the operation of the electrodialysis cell in the electrodialysis machine housing, it is recommended to optimize parameters such as current density, water temperature, and membrane surface flow rate to ensure stable operation and reduce energy consumption.

[0011] Preferably, the liquid inlet of the first pump body is fixedly communicated with a first extraction pipeline extending into the physical and chemical machine housing. A filtering medium is fixedly installed in the middle of the first extraction pipeline. The liquid outlet of the first pump body is fixedly communicated with a conveying pipeline extending into the electrocoagulation machine housing and the electrodialysis machine housing. The liquid inlet of the second pump body is fixedly communicated with a second extraction pipeline extending into the electrodialysis machine housing. The liquid outlet of the second pump body is fixedly communicated with a reflux pipeline extending to the outside. A first pH sensor is fixedly installed in the middle of the conveying pipeline. A second pH sensor is fixedly installed in the middle of the second extraction pipeline. A conductivity sensor is fixedly installed on the surface of the second extraction pipeline. The first pump body extracts the permeate after physical and chemical treatment through the first extraction pipeline, and the first pH sensor senses the pH of the permeate. The second pump body extracts the permeate after electrodialysis through the second extraction pipeline. The second pH sensor senses the pH of the permeate after electrodialysis, and the conductivity sensor senses the conductivity of the permeate after electrodialysis. The filtering medium includes sand filter materials, anthracite, quartz sand, etc., and can be selected according to the properties and particle sizes of the suspended substances.

[0012] Preferably, a control panel is fixedly installed on the surface of the treatment frame. The user operates the control panel to realize an automated control system architecture including a field control layer, a centralized monitoring layer, and a management layer.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: The landfill leachate is first subjected to physical and chemical treatment to remove most of the suspended substances, heavy metals, and organic matters, and then enters the electrodialysis system for in-depth treatment. In view of the characteristics of the landfill leachate concentrate, the parameters of the electrodialysis treatment technology are optimized, the treatment efficiency is improved, and it has been successfully applied to practical projects to meet the treatment requirements of landfill leachate for people. Description of the Drawings

[0014] Figure 1 is a side view of the present utility model;

[0015] Figure 2 is a cross-sectional view of the physical and chemical treatment mechanism of the present utility model;

[0016] Figure 3 is a side view of the stirring mechanism of the present utility model;

[0017] Figure 4 is a side view of the electrodialysis machine housing of the present utility model.

[0018] In the figure: 1, treatment frame; 2, physical and chemical treatment mechanism; 21, physical and chemical machine housing; 22, first feed hopper; 23, stirring member; 231, stepping motor; 232, motor base; 233, first stirring paddle; 234, fixed platform; 235, second stirring paddle; 236, active umbrella-shaped bevel gear; 237, driven umbrella-shaped bevel gear; 24, support leg; 25, second feed hopper; 3, first extraction pipeline; 4, filter medium; 5, first pump body; 6, conveying pipeline; 7, first pH sensor; 8, electrodialysis machine housing; 9, second pH sensor; 10, conductivity sensor; 11, second pump body; 12, reflux pipeline; 13, pH dosing pipeline; 14, reagent dosing pipeline; 15, control panel; 16, second extraction pipeline; 17, electrocoagulation machine housing. Detailed implementation manner

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Please refer to Figures 1-4 , the present invention provides a garbage leachate concentrate treatment device, including a treatment frame 1, a physical and chemical treatment mechanism 2 is fixedly installed on one side of the bottom end of the treatment frame 1, an electrodialysis machine housing 8 is fixedly installed on the other side of the bottom end of the treatment frame 1, an electrocoagulation machine housing 17 is fixedly installed in the middle of the bottom end of the treatment frame 1, a first pump body 5 is fixedly installed on the treatment frame 1 on one side of the physical and chemical treatment mechanism 2, a second pump body 11 is fixedly installed on the treatment frame 1 on one side of the electrodialysis machine housing 8, the physical and chemical treatment mechanism 2 includes a physical and chemical machine housing 21, a first feed hopper 22 and a second feed hopper 25, the bottom ends of the first feed hopper 22 and the second feed hopper 25 are respectively fixedly communicated with both sides of the top end of the physical and chemical machine housing 21, and a stirring member 23 is fixedly installed between the first feed hopper 22 and the second feed hopper 25.

[0021] The stirring member 23 includes a motor base 232 and a stepping motor 231. The top end of the motor base 232 is fixedly connected to the bottom end of the stepping motor 231. A fixing platform 234 is provided at the bottom end of the motor base 232. A driving bevel gear 236 is rotatably connected to the top end of the fixing platform 234. Two driven bevel gears 237 are meshed and connected to the outside of the driving bevel gear 236. First stirring paddles 233 extending into the first feed hopper 22 and the second feed hopper 25 are respectively fixedly installed in the middle parts of the two driven bevel gears 237. One ends of the two first stirring paddles 233 are respectively rotatably connected to one side of the inner wall of the first feed hopper 22 and one side of the inner wall of the second feed hopper 25. The output end of the stepping motor 231 is fixedly installed with a second stirring paddle 235 extending into the physicochemical machine housing 21. One end of the second stirring paddle 235 is fixedly connected to the middle part of the driving bevel gear 236. After the stepping motor 231 is powered on and starts, the stepping motor 231 drives the second stirring paddle 235 and the driving bevel gear 236 to rotate. The driving bevel gear 236 contacts the driven bevel gears 237, and the driven bevel gears 237 drive the first stirring paddles 233 to rotate. The first stirring paddles 233 respectively stir the injected permeate and medicament. For example, a precipitant and a precipitant are injected into the second feed hopper 25. The precipitation method is to add an appropriate amount of precipitant to the landfill leachate to form insoluble precipitates of heavy metal ions, thereby achieving the removal method. The precipitants include lime, sodium hydroxide, sulfides, etc., and appropriate precipitants can be selected according to the types and concentrations of heavy metal ions in the landfill leachate. The adsorption method is a method of removing organic matter in the landfill leachate by using an adsorbent with high adsorption performance through physical or chemical adsorption. The adsorbents include activated carbon, resin, zeolite, etc., which have the advantages of large adsorption capacity and fast adsorption speed.

[0022] Both ends of the motor base 232 are respectively fixedly connected to the top end of one side of the first feed hopper 22 and the top end of one side of the second feed hopper 25. Both ends of the fixing platform 234 are respectively fixedly connected to the bottom end of one side of the first feed hopper 22 and the bottom end of one side of the second feed hopper 25. The stirring member 23 is installed between the first feed hopper 22 and the second feed hopper 25 through the motor base 232 and the fixing platform 234.

[0023] Support legs 24 are fixedly installed at the four corners of the bottom end of the physicochemical machine housing 21. The bottom ends of the four support legs 24 are all fixedly connected to the treatment frame 1. The physicochemical treatment mechanism 2 is installed on the treatment frame 1 through the support legs 24.

[0024] At the top of one side of the electrodialysis housing 8, a PH dosing pipe 13 is fixedly connected. At the top of the other side of the electrodialysis housing 8, a chemical dosing pipe 14 is fixedly connected. The user puts a PH regulator into the electrodialysis housing 8 through the PH dosing pipe 13, and the user puts chemicals into the electrodialysis housing 8 through the chemical dosing pipe 14. For the operation of the electrodialysis device by the electrodialysis housing 8, it is recommended to optimize parameters such as current density, water temperature, and membrane surface flow rate to ensure stable operation and reduce energy consumption.

[0025] The liquid inlet of the first pump body 5 is fixedly connected with a first extraction pipe 3 extending into the physical and chemical housing 21. A filter medium 4 is fixedly installed in the middle of the first extraction pipe 3. The liquid outlet of the first pump body 5 is fixedly connected with a conveying pipe 6 extending into the electrocoagulation housing 17 and the electrodialysis housing 8. The liquid inlet of the second pump body 11 is fixedly connected with a second extraction pipe 16 extending into the electrodialysis housing 8. The liquid outlet of the second pump body 11 is fixedly connected with a return pipe 12 extending to the outside. A first PH sensor 7 is fixedly installed in the middle of the conveying pipe 6. A second PH sensor 9 is fixedly installed in the middle of the second extraction pipe 16. A conductivity sensor 10 is fixedly installed on the surface of the second extraction pipe 16. The first pump body 5 extracts the permeate after physical and chemical treatment through the first extraction pipe 3, and the first PH sensor 7 senses the PH of the permeate. The second pump body 11 extracts the permeate after electrodialysis through the second extraction pipe 16. The second PH sensor 9 senses the PH of the permeate after electrodialysis, and the conductivity sensor 10 senses the conductivity of the permeate after electrodialysis. The filter medium 4 includes sand filter materials, anthracite, quartz sand, etc., and can be selected according to the properties and particle sizes of the suspended substances.

[0026] A control panel 15 is fixedly installed on the surface of the processing frame 1. The user operates the control panel 15 to realize an automated control system architecture including the on-site control layer, the centralized monitoring layer, and the management layer.

[0027] In the use of the embodiments of the present application: After the stepper motor 231 is powered on, it starts. The stepper motor 231 drives the second stirring paddle 235 and the driving bevel helical gear 236 to rotate. The driving bevel helical gear 236 contacts the driven bevel helical gear 237, and the driven bevel helical gear 237 drives the first stirring paddle 233 to rotate. The first stirring paddle 233 stirs the injected osmotic fluid and medicament respectively. For example, a precipitant and a precipitant are injected into the second feed hopper 25. The precipitation method is to add an appropriate amount of precipitant to the landfill leachate to form insoluble precipitates of heavy metal ions, thereby achieving the removal method. The precipitant includes lime, sodium hydroxide, sulfide, etc., and a suitable precipitant can be selected according to the types and concentrations of heavy metal ions in the landfill leachate. The adsorption method is a method of removing organic matter in the landfill leachate by physical or chemical adsorption using an adsorbent with high adsorption performance. The adsorbent includes activated carbon, resin, zeolite, etc., and has the advantages of large adsorption capacity and fast adsorption speed. The filter medium 4 includes sand filter material, anthracite, quartz sand, etc., which can be selected according to the properties and particle sizes of the suspended matter. The filtration method has the advantages of good treatment effect and stable operation, but the blockage and replacement of the filter medium require regular maintenance. At the same time, the waste residue generated by filtration also needs to be properly treated. The first pump body 5 extracts the osmotic fluid after physical and chemical treatment through the first extraction pipeline 3, and the first pH sensor 7 senses the pH of the osmotic fluid. The second pump body 11 extracts the osmotic fluid after electrodialysis through the second extraction pipeline 16. The second pH sensor 9 senses the pH of the osmotic fluid after electrodialysis, and the conductivity sensor 10 senses the conductivity of the osmotic fluid after electrodialysis. The user injects a pH regulator into the electrodialysis housing 8 through the pH dosing pipeline 13, and the user injects a medicament into the electrodialysis housing 8 through the medicament dosing pipeline 14. The operation of the electrodialysis in the electrodialysis housing 8 is recommended to optimize parameters such as current density, water temperature, and membrane surface flow rate to ensure stable operation and reduce energy consumption. Electrodialysis is to utilize the selective permeability of the ion exchange membrane to make the ions in the water migrate directionally under the action of a direct current electric field, thereby achieving the purpose of desalination, concentration, refinement, or purification of the solution.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A garbage leachate concentrate treatment device, comprising a treatment frame (1), characterized in that: One side of the bottom end of the treatment rack (1) is fixedly installed with a physical and chemical treatment mechanism (2). On the other side of the bottom end of the treatment rack (1), an electrodialysis machine housing (8) is fixedly installed. In the middle of the bottom end of the treatment rack (1), an electrocoagulation machine housing (17) is fixedly installed. A first pump body (5) is fixedly installed on the treatment rack (1) on one side of the physical and chemical treatment mechanism (2). A second pump body (11) is fixedly installed on the treatment rack (1) on one side of the electrodialysis machine housing (8). The physical and chemical treatment mechanism (2) includes a physical and chemical machine housing (21), a first feed hopper (22) and a second feed hopper (25). The bottom ends of the first feed hopper (22) and the second feed hopper (25) are respectively fixedly communicated with both sides of the top end of the physical and chemical machine housing (21). A stirring member (23) is fixedly installed between the first feed hopper (22) and the second feed hopper (25).

2. The garbage leachate concentrate treatment device according to claim 1, characterized in that: The stirring member (23) includes a motor base (232) and a stepping motor (231). The top end of the motor base (232) is fixedly connected to the bottom end of the stepping motor (231). A fixed platform (234) is provided at the bottom end of the motor base (232). A driving bevel gear (236) is rotatably connected to the top end of the fixed platform (234). Two driven bevel gears (237) are meshed and connected to the outside of the driving bevel gear (236). First stirring paddles (233) extending into the inside of the first feed hopper (22) and the second feed hopper (25) are respectively fixedly installed in the middle parts of the two driven bevel gears (237). One ends of the two first stirring paddles (233) are respectively rotatably connected to one side of the inner wall of the first feed hopper (22) and one side of the inner wall of the second feed hopper (25). The output end of the stepping motor (231) is fixedly installed with a second stirring paddle (235) extending into the inside of the physical and chemical machine housing (21). One end of the second stirring paddle (235) is fixedly connected to the middle part of the driving bevel gear (236).

3. The treatment device for landfill leachate concentrate according to claim 2, wherein: Both ends of the motor base (232) are respectively fixedly connected to the top ends of one side of the first feed hopper (22) and the top ends of one side of the second feed hopper (25). Both ends of the fixed platform (234) are respectively fixedly connected to the bottom ends of one side of the first feed hopper (22) and the bottom ends of one side of the second feed hopper (25).

4. A garbage leachate concentrate treatment device according to claim 1, characterized in that: Support legs (24) are fixedly installed at the four corners of the bottom end of the physical and chemical machine housing (21). The bottom ends of the four support legs (24) are all fixedly connected to the treatment rack (1).

5. A garbage leachate concentrate treatment device according to claim 1, characterized in that: A PH dosing pipeline (13) is fixedly communicated with the top end of one side of the electrodialysis machine housing (8). A reagent dosing pipeline (14) is fixedly communicated with the top end of the other side of the electrodialysis machine housing (8).

6. The treatment device for landfill leachate concentrate according to claim 1, characterized in that: The liquid inlet of the first pump body (5) is fixedly communicated with a first extraction pipeline (3) extending into the internal part of the physical and chemical machine housing (21). A filtering medium (4) is fixedly installed in the middle of the first extraction pipeline (3). The liquid outlet of the first pump body (5) is fixedly communicated with a conveying pipeline (6) extending into the internal parts of the electrocoagulation machine housing (17) and the electrodialysis machine housing (8). The liquid inlet of the second pump body (11) is fixedly communicated with a second extraction pipeline (16) extending into the internal part of the electrodialysis machine housing (8). The liquid outlet of the second pump body (11) is fixedly communicated with a reflux pipeline (12) extending to the outside. A first pH sensor (7) is fixedly installed in the middle of the conveying pipeline (6). A second pH sensor (9) is fixedly installed in the middle of the second extraction pipeline (16). A conductivity sensor (10) is fixedly installed on the surface of the second extraction pipeline (16).

7. A garbage leachate concentrate treatment device according to claim 1, characterized in that: A control panel (15) is fixedly installed on the surface of the processing machine frame (1).

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