Heavy metal polluted river sediment comprehensive treatment and remediation equipment

Abstract

The invention discloses comprehensive treatment and remediation equipment for heavy metal polluted river sediment, and belongs to the technical field of sludge treatment, the comprehensive treatment and remediation equipment comprises a support frame, a treatment cylinder is arranged on the support frame, a treatment filter assembly is arranged at the upper part of the treatment cylinder, and the treatment filter assembly is rotatably connected with the treatment cylinder; the lower part of the treatment cylinder is provided with a treatment mixing assembly, the treatment mixing assembly is rotatably connected with the treatment cylinder, and the top of the treatment cylinder is provided with a feeding funnel which is communicated with the treatment cylinder; a sludge drying assembly is arranged beside the supporting frame and communicates with the treatment barrel. According to the method, the sludge in the bottom of the heavy metal polluted river channel can be repaired and treated.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a comprehensive treatment and restoration device for riverbed sludge polluted by heavy metals. Background Art

[0002] With the acceleration of industrialization and the continuous increase of human activities, a large amount of heavy metals are discharged into rivers, causing serious pollution of river sediments. These heavy metals not only damage aquatic ecosystems, but may also enter the human body through the food chain, posing a threat to human health. Therefore, comprehensive management and restoration of heavy metal-contaminated river sediments has become a top priority.

[0003] However, in the existing sludge treatment process, first of all, in the process of cleaning the debris in the sludge, such as stones or large debris, it is easy to cause the equipment to be blocked, causing the equipment to stop and affecting the overall sludge repair work. In addition, when the heavy metals in the sludge are repaired and treated by chemical agents, the chemical agents cannot be fully and accurately mixed with the sludge, affecting the subsequent sludge repair and treatment. Summary of the invention

[0004] The embodiment of the present invention provides a device for comprehensive treatment and restoration of riverbed mud polluted by heavy metals to solve the problems in the prior art.

[0005] The embodiment of the present invention adopts the following technical scheme: a comprehensive treatment and restoration device for heavy metal-contaminated riverbed sediment, comprising a support frame, a treatment cylinder is provided on the support frame, a treatment filter assembly is provided on the upper part of the treatment cylinder, the treatment filter assembly is rotatably connected to the treatment cylinder, a treatment mixing assembly is provided on the lower part of the treatment cylinder, the treatment mixing assembly is rotatably connected to the treatment cylinder, and a connected feed funnel is provided on the top of the treatment cylinder; a sludge drying assembly is provided on the side of the support frame, and the sludge drying assembly is connected to the treatment cylinder.

[0006] Furthermore, the treatment and filtering assembly includes a rotating motor, a rotating frame and a filter grid chassis, the rotating motor is located at the top of the treatment cylinder, the rotating frame is located in the treatment cylinder and the rotating motor and the rotating frame are transmission-connected, and the filter grid chassis is horizontally arranged in the middle position in the treatment cylinder.

[0007] Furthermore, the rotating frame is provided with four rotating blades.

[0008] Furthermore, the rotating frame is provided with a driving actuator, a rotating ring and four rotating plates, the driving actuator is vertically arranged inside the rotating frame, the rotating ring is located at the bottom of the rotating frame, the rotating ring and the rotating frame are slidingly matched, the telescopic end of the driving actuator is connected to the rotating ring, the four rotating plates are located on the rotating ring, and a number of dredging rods arranged at equal intervals are provided at the bottom of the rotating plate.

[0009] Furthermore, the treatment mixing assembly includes a mixing motor and a mixing frame, the mixing motor is located at the bottom of the treatment cylinder, the mixing frame is located in the treatment cylinder and the mixing frame is connected to the main shaft of the mixing motor, and a horizontally arranged mixing plate is provided on the mixing frame.

[0010] Furthermore, a discharge box is provided on the treatment tube, a connecting seat is provided between the discharge box and the treatment tube, the discharge port of the discharge box extends into the treatment tube, an opening and closing plate that slides with the discharge box is provided at the discharge port of the discharge box, a sliding rod that slides with the discharge box is provided at the bottom of the opening and closing plate, a rotating wheel is provided at the bottom of the sliding rod, an inclined plate is provided at the bottom end of the mixing plate, and a counterweight block is provided on the top of the opening and closing plate.

[0011] Furthermore, the sludge drying assembly includes a drying box, a heating rod is provided in the drying box, two symmetrically arranged and rotatable rotating screws are provided in the drying box, a conveying motor is provided on the side wall of the drying box and is transmission-connected to the rotating screws, a threaded movable frame is provided between the two rotating screws, a rotatably connected flipping roller is provided on the movable frame, a plurality of flipping plates are provided on the flipping roller, and a discharge door is provided on the drying box.

[0012] Furthermore, a plurality of air outlets are provided on the top of the drying box.

[0013] Furthermore, a discharge pipe is provided between the treatment cylinder and the drying box, and a valve is provided on the discharge pipe.

[0014] Furthermore, an opening door is provided on the treatment cylinder at the filter grid bottom plate, and the opening door is hinged to the treatment cylinder.

[0015] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0016] Firstly, in the process of filtering the sludge of the present invention, the rotating frame rotates to stir the sludge, so that the sludge falls downward from the filter grid chassis. In the process of filtering, the filtered debris or stones will be stuck in the mesh holes of the filter grid chassis. At this time, it is necessary to remove the debris or stones in the mesh holes of the filter grid chassis. At this time, the driving actuator will drive the rotating ring to move up and down on the rotating frame, thereby driving the positions of the four rotating plates on the rotating ring to move downward, and the positions of the several dredging rods on the rotating plate are moved downward, and the positions of the several dredging rods are moved into the mesh holes of the filter grid chassis, so as to work on the debris or stones blocked in the mesh holes of the filter grid chassis, so as to filter the sludge again later.

[0017] Secondly, when the present invention conveys the chemical agent to the treatment cylinder through the discharge box, the mixing motor can drive the mixing plate to rotate by rotating the mixing frame, and the mixing plate can drive the inclined plate to rotate by rotating. When the inclined plate moves to the bottom of the rotating wheel, the slide bar will move upward on the discharge box, and the upward movement of the slide bar will drive the opening and closing plate to move upward at the discharge port of the discharge box to open the discharge port of the discharge box, so that the chemical agent can be conveyed from the discharge box to the treatment cylinder. During the rotation of the mixing frame, when the inclined plate rotates away from the bottom of the rotating wheel, the bottom of the opening and closing plate is provided with a counterweight block, so that the opening and closing plate moves downward to close the discharge port of the discharge box.

[0018] When the sludge is chemically solidified and treated, when the sludge and chemical agents are fully stirred and mixed, the chemical agents can be evenly transported to the sludge while stirring, and the quantitative discharge of the chemical agents can be achieved, so that the chemical agents are fully mixed with the sludge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the treatment filtering component and the treatment mixing component in the present invention;

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the driving actuator in the present invention;

[0024] Figure 5 It is a three-dimensional structural schematic diagram of the material discharging box in the present invention;

[0025] Figure 6 for Figure 5 The enlarged view of point A in the middle;

[0026] Figure 7 It is a three-dimensional structural schematic diagram of the sludge drying component in the present invention;

[0027] Reference numerals

[0028] Support frame 1, treatment cylinder 11, feed funnel 12, open door 13, treatment filter component 2, rotating motor 21, rotating frame 22, filter grid chassis 23, rotating blade 24, treatment mixing component 3, mixing motor 31, mixing frame 32, mixing plate 33, tilting plate 34, sludge drying component 4, drying box 41, rotating screw 43, conveying motor 44, mobile frame 45, flip roller 46, flip plate 47, air outlet 48, discharge door 49, drive actuator 5, rotating ring 50, rotating plate 51, dredging rod 52, discharge box 6, discharge port 60, connecting seat 61, opening and closing plate 62, sliding rod 63, rotating wheel 64, counterweight block 65, discharge pipe 7, valve 71. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] Reference Figures 1 to 7 As shown, an embodiment of the present invention provides a comprehensive treatment and restoration device for heavy metal-contaminated riverbed sediment, including a support frame 1, on which a treatment cylinder 11 is provided, and the upper part of the treatment cylinder 11 is provided with a treatment filter assembly 2, and the treatment filter assembly 2 is rotatably connected to the treatment cylinder 11, and the lower part of the treatment cylinder 11 is provided with a treatment mixing assembly 3, and the treatment mixing assembly 3 is rotatably connected to the treatment cylinder 11, and a connected feeding funnel 12 is provided on the top of the treatment cylinder 11; a sludge drying assembly 4 is provided on the side of the support frame 1, and the sludge drying assembly 4 is connected to the treatment cylinder 11.

[0032] In the process of repairing the sludge, it is transported to the treatment cylinder 11 through the feed funnel 12, and then the impurities and stones in the sludge are filtered through the treatment filtering component 2. After filtering, the sludge is transported to the bottom position of the treatment cylinder 11, and the sludge is mixed with chemicals through the treatment mixing component 3, so that the chemicals react with the heavy metals in the sludge and convert them into a more stable form. Then, it is transported to the sludge drying component 4 through the discharge pipe 7, and the sludge drying component 4 dries and solidifies the sludge, thereby realizing the comprehensive treatment and repair of the riverbed mud.

[0033] Specifically, the treatment and filtering assembly 2 includes a rotating motor 21, a rotating frame 22 and a filter grid chassis 23. The rotating motor 21 is located at the top of the treatment cylinder 11, the rotating frame 22 is located in the treatment cylinder 11 and the rotating motor 21 and the rotating frame 22 are transmission-connected. The filter grid chassis 23 is horizontally arranged in the middle position in the treatment cylinder 11.

[0034] When the sludge is rotationally filtered, the rotating motor 21 drives the rotating frame 22 to rotate in the treatment barrel 11. The rotation of the rotating frame 22 drives the sludge to rotate, causing the sludge to fall downward from the filter grid chassis 23 into the treatment barrel 11, and large stones and debris are filtered and intercepted through the filter grid chassis 23, so that the door 13 can be opened later to take the large stones and debris out.

[0035] Specifically, the rotating frame 22 is provided with four rotating blades 24; the rotating frame 22 will drive the positions of the four rotating blades 24 to rotate during the rotation process, and the rotation of the four rotating blades 24 can remove some large solid substances that may exist in the sludge, which will affect the uniformity of stirring. The rotating blades 24 can quickly break the large sludge into smaller particles, making it easier to mix the sludge evenly during the stirring process, thereby improving the stirring efficiency.

[0036] When processing industrial sludge containing larger particles, the rotating blades 24 can quickly break up these particles, making the subsequent filtering process smoother.

[0037] The sludge can be prevented from agglomerating. The sludge is easy to agglomerate when stored for a long time or under certain conditions, which will reduce the stirring effect and affect the filtering efficiency. The rotation of the rotating blade 24 can effectively break up the agglomerated sludge, keep the sludge in a loose state, and ensure the smooth progress of the stirring and filtering process.

[0038] o

[0039] Specifically, the rotating frame 22 is provided with a driving actuator 5, a rotating ring 50 and four rotating plates 51, the driving actuator 5 is vertically arranged inside the rotating frame 22, the rotating ring 50 is located at the bottom of the rotating frame 22, the rotating ring 50 and the rotating frame 22 are slidably matched, the telescopic end of the driving actuator 5 is connected to the rotating ring 50, the four rotating plates 51 are located on the rotating ring 50, and the bottom of the rotating plate 51 is provided with a plurality of dredging rods 52 arranged at equal intervals. The driving actuator 5 can be an actuator such as an electric cylinder or a pneumatic cylinder that can drive the rotating ring 50 to move up and down on the rotating frame 22.

[0040] During the filtering process of the sludge, the rotating frame 22 rotates to stir the sludge, so that the sludge falls downward from the filter grid chassis 23. During the filtering process, the filtered debris or stones will be stuck in the mesh holes of the filter grid chassis 23. At this time, it is necessary to remove the debris or stones in the mesh holes of the filter grid chassis 23. At this time, the driving actuator 5 will drive the rotating ring 50 to move up and down on the rotating frame 22, thereby driving the positions of the four rotating plates 51 on the rotating ring 50 to move downward, and the positions of the several dredging rods 52 on the rotating plates 51 are moved downward, and the positions of the several dredging rods 52 are moved into the mesh holes of the filter grid chassis 23, so as to work on the debris or stones blocked in the mesh holes of the filter grid chassis 23, so as to filter the sludge again later.

[0041] It should be noted that the rotating frame 22 will drive the rotating ring 50 and the four rotating plates 51 to rotate during the rotation process, thereby driving the plurality of dredging rods 52 at the bottom of the rotating plates 51 to rotate, so as to better filter the sludge and filter out the stones and debris in the sludge.

[0042] Specifically, the treatment mixing assembly 3 includes a mixing motor 31 and a mixing frame 32. The mixing motor 31 is located at the bottom of the treatment cylinder 11. The mixing frame 32 is located in the treatment cylinder 11 and is connected to the main shaft of the mixing motor 31. The mixing frame 32 is provided with a horizontally arranged mixing plate 33.

[0043] After the chemical agent is added to the sludge, the mixing motor 31 works to drive the mixing frame 32 to rotate in the treatment barrel 11, so that the chemical agent and the sludge can be fully mixed, so that the heavy metals in the sludge react chemically with the chemical agent and are converted into a more stable form. For example, when lime, phosphate and other agents are added, the heavy metals will react with these to form insoluble precipitates or be adsorbed on the mineral surface formed by the added agents, thereby reducing their mobility and bioavailability.

[0044] Specifically, a discharge box 6 is provided on the treatment tube 11, and a connecting seat 61 is provided between the discharge box 6 and the treatment tube 11. The discharge port 60 of the discharge box 6 extends into the treatment tube 11, and an opening and closing plate 62 that slides with the discharge box 6 is provided at the discharge port 60 of the discharge box 6. A sliding rod 63 that slides with the discharge box 6 is provided at the bottom of the opening and closing plate 62. A rotating wheel 64 is provided at the bottom of the sliding rod 63. An inclined plate 34 is provided at the bottom end of the mixing plate 33, and a counterweight block 65 is provided at the top of the opening and closing plate 62.

[0045] It should be noted that sealing gaskets are provided at the discharge port 60 of the discharge box 6 and the opening and closing plate 62 to ensure that the chemical agent does not overflow.

[0046] When the chemical agent is transported to the treatment tube 11 through the discharge box 6, the mixing motor 31 works and the mixing frame 32 rotates to drive the mixing plate 33 to rotate, and the mixing plate 33 rotates to drive the inclined plate 34 to rotate. When the inclined plate 34 moves to the bottom of the rotating wheel 64, the slide bar 63 moves upward on the discharge box 6, and the upward movement of the slide bar 63 drives the opening and closing plate 62 to move upward at the discharge port 60 of the discharge box 6, and the discharge port 60 of the discharge box 6 is opened, so that the chemical agent is transported from the discharge box 6 to the treatment tube 11. When the mixing frame 32 is rotating, when the inclined plate 34 rotates away from the bottom of the rotating wheel 64, the bottom of the opening and closing plate 62 is provided with a counterweight block 65, so that the opening and closing plate 62 moves downward to close the discharge port 60 of the discharge box 6.

[0047] When the sludge is chemically solidified and treated, when the sludge and chemical agents are fully stirred and mixed, the chemical agents can be evenly transported to the sludge while stirring, and quantitative intermittent discharge of the chemical agents can be achieved, so that the chemical agents are fully mixed with the sludge.

[0048] During use, chemicals can be added to the treatment tube 11 intermittently, which can have the following benefits:

[0049] Adapt to the needs of different reaction stages:

[0050] Heavy metal sludge treatment usually involves multiple complex chemical reaction processes. At different stages, the demand for chemical agents varies. Intermittent addition can add specific agents at key nodes according to the specific progress of the reaction to ensure that the reaction at each stage can proceed efficiently. For example, in the early stage, it may be necessary to add an agent to adjust the pH value of the sludge to create a suitable environment for the subsequent heavy metal precipitation reaction. When the pH value is adjusted to the appropriate range, the precipitant is added intermittently to more effectively convert the heavy metal ions into stable precipitates; this can avoid the reaction being out of control or incomplete due to the one-time addition of the agent, thereby improving the treatment effect.

[0051] Adjustments for changes in heavy metal forms:

[0052] As the treatment process progresses, the form of heavy metals in the sludge may change. Intermittent addition of chemical agents can timely adjust the type and dosage of agents according to the dynamic changes in the form of heavy metals. For example, some heavy metals will present different ionic forms under different pH conditions. By intermittently adding acid-base regulators, the pH value of the reaction system can be accurately controlled, prompting the heavy metals to be converted into a form that is easier to remove.

[0053] Specifically, the sludge drying assembly 4 includes a drying box 41, a heating rod is provided in the drying box 41, two symmetrically arranged rotating screws 43 are provided in the drying box 41, a conveying motor 44 is provided on the side wall of the drying box 41 and is transmission-connected to the rotating screw 43, a threaded movable frame 45 is provided between the two rotating screws 43, a rotatably connected turning roller 46 is provided on the movable frame 45, a plurality of turning plates 47 are provided on the turning roller 46, and a discharge door 49 is provided on the drying box 41. After the sludge is dried, the discharge door 49 is opened to discharge the dried and solidified sludge outward.

[0054] When the sludge is transported to the drying box 41 for drying, the heating rod works to heat the sludge in the drying box 41 to dry it. During heating, the two conveying motors 44 work simultaneously to drive the two rotating screws 43 to rotate in the drying box 41. The rotation of the two rotating screws 43 can drive the moving frame 45 to move horizontally in the drying box 41, which will drive the turning rollers 46 to rotate in the moving frame 45. The rotation of the turning rollers 46 will drive a number of turning plates 47 to rotate, thereby turning the sludge in the drying box 41, so that the sludge to be dried can be turned over, so that the sludge can be dried faster and with better effect during the drying process.

[0055] Specifically, a plurality of air outlets 48 are provided on the top of the drying box 41. The air outlets 48 can discharge the water vapor generated by the sludge drying to the outside, which is beneficial to the drying of the sludge.

[0056] Specifically, a discharge pipe 7 is provided between the treatment cylinder 11 and the drying box 41 , and a valve 71 is provided on the discharge pipe 7 .

[0057] After the sludge and the chemical agent are evenly stirred and reacted, the sludge is transported from the treatment cylinder 11 to the drying box 41 through the discharge pipe 7. During the transportation process, the valve 71 can control the on-off of the discharge pipe 7.

[0058] Specifically, an opening door 13 is provided on the treatment cylinder 11 at the filter grid bottom plate 23 , and the opening door 13 is hinged to the treatment cylinder 11 .

[0059] After filtering the sludge, it is necessary to take out the filtered stones and large debris, and then the door 13 can be opened to take out the stones and large debris.

[0060] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud, characterized in that: It comprises a support frame (1), on which a treatment cylinder (11) is provided; The upper part of the treatment cylinder (11) is provided with a treatment filter assembly (2), and the treatment filter assembly (2) is rotatably connected to the treatment cylinder (11); A treatment mixing assembly (3) is provided at the lower part of the treatment cylinder (11), and the treatment mixing assembly (3) is rotatably connected to the treatment cylinder (11); A connected feed hopper (12) is provided on the top of the treatment cylinder (11); A sludge drying component (4) is provided on the side of the support frame (1), and the sludge drying component (4) is connected to the treatment cylinder (11).

2. The heavy metal polluted riverbed sediment comprehensive treatment and restoration equipment according to claim 1 is characterized by: The treatment and filtering assembly (2) comprises a rotating motor (21), a rotating frame (22) and a filtering grid chassis (23); The rotating motor (21) is located at the top of the treatment cylinder (11), the rotating frame (22) is located in the treatment cylinder (11), and the rotating motor (21) and the rotating frame (22) are transmission-connected; The filtering grid bottom plate (23) is horizontally arranged at a middle position in the treatment cylinder (11).

3. The comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud according to claim 2 is characterized by: Four rotating blades (24) are arranged on the rotating frame (22).

4. The comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud according to claim 2 is characterized by: The rotating frame (22) is provided with a driving actuator (5), a rotating ring (50) and four rotating plates (51); The driving actuator (5) is vertically arranged inside the rotating frame (22), the rotating ring (50) is located at the bottom of the rotating frame (22), and the rotating ring (50) and the rotating frame (22) are slidably matched; The telescopic end of the driving actuator (5) is connected to the rotating ring (50), the four rotating plates (51) are located on the rotating ring (50), and a plurality of dredging rods (52) arranged at equal intervals are provided at the bottom of the rotating plates (51).

5. The comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud according to claim 1 is characterized by: The treatment mixing component (3) comprises a mixing motor (31) and a mixing frame (32); The mixing motor (31) is located at the bottom of the treatment cylinder (11), the mixing frame (32) is located in the treatment cylinder (11), and the mixing frame (32) is connected to the main shaft of the mixing motor (31); The mixing frame (32) is provided with a mixing plate (33) arranged horizontally.

6. The comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud according to claim 5 is characterized by: A discharge box (6) is provided on the treatment tube (11), and a connecting seat (61) is provided between the discharge box (6) and the treatment tube (11); The discharge port (60) of the discharge box (6) extends into the treatment tube (11), and an opening and closing plate (62) slidably matched with the discharge port (60) of the discharge box (6) is provided at the discharge port (60) of the discharge box (6), and a sliding rod (63) slidably matched with the discharge box (6) is provided at the bottom of the opening and closing plate (62), and a rotating wheel (64) is provided at the bottom of the sliding rod (63); An inclined plate (34) is provided at the bottom end of the mixing plate (33), and a counterweight block (65) is provided at the top of the opening and closing plate (62).

7. The heavy metal polluted riverbed sediment comprehensive treatment and restoration equipment according to claim 1 is characterized by: The sludge drying component (4) comprises a drying box (41), and a heating rod is provided in the drying box (41); Two symmetrically arranged rotating screws (43) are provided in the drying box (41), and a conveying motor (44) drivingly connected to the rotating screws (43) is provided on the side wall of the drying box (41); A threaded movable frame (45) is provided between the two rotating screw rods (43), a rotatably connected turning roller (46) is provided on the movable frame (45), a plurality of turning plates (47) are provided on the turning roller (46), and a discharge door (49) is provided on the drying box (41).

8. The comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud according to claim 7 is characterized by: The top of the drying box (41) is provided with a plurality of air outlet holes (48).

9. The comprehensive treatment and restoration equipment for heavy metal polluted riverbed mud according to claim 7 is characterized by: A discharge pipe (7) is provided between the treatment cylinder (11) and the drying box (41), and a valve (71) is provided on the discharge pipe (7).

10. The heavy metal polluted riverbed sediment comprehensive treatment and restoration equipment according to claim 2, characterized in that: An opening door (13) is provided on the treatment cylinder (11) at the filter grid bottom plate (23), and the opening door (13) is hinged to the treatment cylinder (11).

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