Device and method for removing sulfide in river sludge

Abstract

The invention discloses a device and method for removing sulfides in river sludge, and belongs to the technical field of sewage treatment.The device comprises a support and treatment parts, the treatment parts are arranged in the support at intervals in the horizontal direction, the treatment parts are connected with the same feeding parts, and each treatment part comprises circulating pipes arranged at intervals in the vertical direction; the circulating pipe is provided with a pipe hole, a purification medium can be injected into the feeding part and released from the pipe hole, auxiliary parts are arranged on the circulating pipe at intervals and comprise sleeve bodies, the sleeve bodies are arranged on the circulating pipe in a sleeving mode and can rotate, the sleeve bodies are provided with circulating holes, and fins are arranged on the outer walls of the sleeve bodies. According to the invention, the speed of the passing sludge can be adaptively adjusted, so that the sludge fully reacts with a purification medium, and efficient and stable removal of sulfides is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewage treatment, and particularly relates to a device and method for removing sulfide from river sludge. Background Art

[0002] With the acceleration of urbanization and industrialization processes, the impact on the environment has become increasingly serious. The protection of the urban water environment has become more important than ever. The emergence of a large number of urban sewage treatment plants has effectively alleviated the pressure on the urban water environment. However, at the same time, it has also brought the problem of how to treat the sludge of sewage treatment plants. Sludge is composed of zoogloea formed by various microorganisms, as well as organic matter, heavy metals, salts, and parasite eggs, etc. If not properly treated, it is likely to cause secondary pollution and will surely bring more adverse results to people's living environment. Therefore, how to effectively treat the sludge in urban sewage treatment is one of the key research objects. Sulfide in sludge mainly exists in the form of dissolved and insoluble states, and its distribution characteristics are affected by various factors. In order to reduce the harm of sulfide to the environment, effective measures need to be taken to control and treat river pollution, including strengthening sewage treatment, improving the hydrodynamic conditions of the river, and increasing the redox potential of the bottom mud, etc.

[0003] The US patent with the publication number US11034605B2 discloses an equipment system and method for extracting minerals and metals from water. The equipment system includes a device for flowing the produced water wellbore from the wellbore to the produced water purification device; at least one device for removing heavy metals from the produced water; at least one brine removal device for removing brine from the produced water. The method includes the step of using the equipment, and the system includes a control panel and at least one sensor, and the control panel operates at least one device for removing heavy metals in a coordinated manner. This invention can effectively remove pollutants from contaminated water, and the desalination platform can help provide fresh water for personal and on-board equipment.

[0004] Since the distribution of sulfide in river sludge shows a certain vertical distribution characteristic, that is, in the bottom mud at different depths, the content and form of sulfide may vary. In addition, the distribution of sulfide may also be affected by environmental factors such as seasonal changes and water flow velocity. In the prior art, during the process of removing sulfide in sludge by releasing oxidants or microorganisms such as sulfur-oxidizing bacteria, the sludge may quickly pass through the device under the influence of water flow, making it difficult to achieve balanced and sufficient removal of sulfide. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for removing sulfide from river sludge with high-efficiency, sufficient sulfide removal ability and strong environmental adaptability.

[0006] The technical solutions adopted by the present invention to achieve the above purpose are as follows: A device for removing sulfide from river sludge, comprising: a bracket and a processing member. The processing members are arranged at intervals in the horizontal direction within the bracket, and each processing member is connected to the same feeding member. The processing member includes flow-through pipes arranged at intervals in the vertical direction. The flow-through pipes have pipe holes, and the feeding member can inject a purification medium and release it from the pipe holes. The flow-through pipes longitudinally arranged at intervals in one processing member can form an obstruction to the sludge, reducing the speed of the sludge passing through the device. At the same time, the multiple processing members are arranged at intervals horizontally. On the premise of allowing the sludge to pass through without blockage, a multi-layer deceleration of the sludge passing through in the horizontal and vertical directions is formed, increasing the contact time between the sludge and the released purification medium, enabling the sulfide in the sludge to fully react with the purification medium, and improving the ability of the purification medium to remove sulfide from the sludge; When the device purifies the sludge, a power device is required to achieve the suction of water flow, that is, the water body flows to carry the sludge through the device. The flow-through pipes arranged in multiple layers form deceleration and dispersion of the sludge, avoiding the blockage of the sludge in the subsequent channels caused by the sludge concentrating and passing through the device directly, and helping to improve the treatment efficiency of the sludge after removing sulfide.

[0007] Preferably, auxiliary members are arranged at intervals on the flow-through pipes. The auxiliary members include sleeves. The sleeves are sleeved on the flow-through pipes and can rotate. The sleeves have flow-through holes, and fins are arranged on the outer walls of the sleeves. The fins on the outer walls of the sleeves can contact the passing sludge and water body, prompting the sleeves to rotate, causing the sleeves to carry the external fins to generate a swirling flow. At this time, the purification medium released outward from the pipe holes of the flow-through pipes can form a diffusion outside the flow-through pipes under the action of the swirling flow, enabling the sludge passing between adjacent flow-through pipes to also contact the purification medium, further realizing the effective removal of sulfide in the sludge and improving the removal rate of sulfide from river sludge.

[0008] Preferably, the pipe holes are opened towards the tail of the bracket. Opening the pipe holes towards the tail of the bracket reduces the risk of the sludge directly entering the pipe holes and blocking, and improves the release stability of the purification medium; The orientation of the pipe holes is the same as the direction of the sludge passing through. When the sludge and the water body pass outside the flow-through pipes, the flowing water body and sludge form a pressure difference with the inside of the flow-through pipes. The purification medium inside the flow-through pipes is released outward under the action of the pressure difference, realizing the discharge of the purification medium without an external power device. Moreover, as the sewage flow rate increases, the pressure difference between the inside and outside of the flow-through pipes becomes larger, and the purification medium is released more rapidly, realizing the adaptive adjustment of the release amount of the purification medium according to the sewage passing speed, avoiding the possibility of waste of resources caused by excessive release of the purification medium under slow flow conditions, and reducing the use cost of the purification medium; Preferably, the fins are spirally wound around the outer wall of the sleeve body, and the width of the contact part between the fins and the sleeve body is smaller than the width of the extension part of the fins outside the sleeve body. The fins are spirally wound and extend outward from the sleeve body. The wound fins can cut the sludge passing through, achieve the dispersion of the sludge before passing through, and effectively separate large sand and other sundries in the sludge. On the one hand, it homogenizes the sludge passing through the device, improves the degree of full reaction between the purification medium and sulfide, and avoids the situation where the inner part of the agglomerated sludge cannot contact the purification medium. On the other hand, it intercepts large sand and gravel, reduces the wear on the flow pipe caused by their passage with the sewage, and reduces the risk of blocking the pipe holes, improving the stability of the purified sludge and the service life of the device. When the sewage passes through, the sleeve body drives the fins to rotate. At this time, the rotating fins can transfer the sludge along the winding direction of the fins. Since the horizontal distribution of the sludge is prone to be uneven when passing through the device, the rotating fins can laterally transfer the sludge, enabling the sludge passing through the entire device to be evenly distributed horizontally, which is beneficial to the balanced discharge of the sludge after sulfide removal, reduces the blockage during the sludge discharge and subsequent treatment and transfer processes, and improves the overall efficiency of sludge purification. On the other hand, it enables the sludge to be evenly distributed in the river channel, which is beneficial to reducing the possibility of local sediment loss in the river channel and maintaining the river channel ecological environment.

[0009] Preferably, there is a gap between adjacent auxiliary parts on the same flow pipe, and a spring is sleeved on the flow pipe at the gap. The setting of the spring enables the auxiliary parts on the same flow pipe to rotate synchronously. That is, when the sludge passes through the sleeve body from one side, the rotation of a single sleeve body drives the rotation of other sleeve bodies, realizing the rapid dispersion and transfer of the sludge from one side to the other side, and improving the degree of balanced distribution of the sludge after release; during the process of the sleeve body being disturbed by the sewage, the sleeve bodies can approach and move away from each other by passing through and squeezing the spring, thereby realizing the adjustment of the positions of the sleeve bodies and reducing the possibility of sludge blocking between adjacent upper and lower sleeve bodies.

[0010] Preferably, connection rings are provided at both ends of the sleeve body. One end face of the connection ring has a snap ring assembled with the end of the sleeve body. The inner ring surface of the connection ring is matched with the flow pipe and is rotatably connected, and there is an annular space between the inner wall of the sleeve body and the outer wall of the flow pipe. An annular space outside the flow pipe is formed by connecting the connection ring with the sleeve body. The purification medium flowing out of the pipe holes of the flow pipe can be temporarily stored in the annular space and is released outward by rotation through the flow holes along with the rotation of the sleeve body, that is, the uniform release of the purification medium is realized through the hydrodynamic force of the external sewage, improving the degree of full contact between the purification medium and the sludge and the sulfide removal efficiency.

[0011] Preferably, the fins adjacent to each other vertically are arranged in cooperation. Through the fins arranged in cooperation, when one of the fins rotates along with the sleeve body, the sludge and water carried by it can promote the rotation of the sleeve body adjacent to it vertically, realizing the rotation of the sleeve bodies at different heights, which helps to transfer some of the bottom sludge upward, enabling some sludge to come into contact with light upward, promoting the oxidation of sulfide in the sludge by the light above the water surface. Without additionally setting a light source, the photocatalysis efficiency of sulfide in the sludge is improved.

[0012] Preferably, the feeding member includes a hollow matrix. Each treatment member is provided with a matrix on both sides. One side of the matrix is communicated with the end of the circulation pipe, and a main pipe is provided on the other side of the matrix. A branch pipe is communicated between the main pipe and each matrix on one side, and a feeding pipe is communicated on the other side of the main pipe. The feeding pipe passes through and is connected to the bracket. By adding a purification medium into the feeding pipe, after the purification medium reaches the main pipe, it is dispersed into each matrix through each branch pipe. The hollow matrix releases the purification medium outward through the holes on each circulation pipe communicated with it. The feeding pipes located on both sides facilitate personnel to add the purification medium at a relatively low height position, reducing the difficulty of the feeding operation.

[0013] Preferably, the branch pipe is communicated with the upper part of the matrix. There are guide vanes spirally extending longitudinally in the matrix, and side holes communicating with the circulation pipe are provided on the side of the matrix. The purification medium can reach the side holes through the guide vanes. The branch pipe is communicated with the upper side of the matrix. The purification medium flowing out of the branch pipe can reach each side hole along the guide vanes under the action of gravity, realizing the uniform distribution of the purification medium in each circulation pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The multi-layer arranged circulation pipes slow down and disperse the sludge, avoiding the centralized blockage of the sludge and improving the treatment efficiency of the sludge after removing sulfide; The purification medium is released through the pressure difference inside and outside the circulation pipe, realizing the discharge without external power, reducing the energy consumption and cost; The purification medium adaptively adjusts the release amount through the pressure difference, reducing the usage cost of excessive use of the purification medium; The sleeve body cuts the sludge through the fins, realizing the effective separation and homogenization of the sludge and sundries, and improving the sufficient degree of the reaction between the purification medium and sulfide; The rotation of the fins can laterally transfer the sludge, making the sludge evenly distributed horizontally and reducing the risk of blockage in the sludge discharge and subsequent treatment; The rotation of the fins evenly distributes the sludge in the river channel, which is beneficial to reducing the possibility of local sediment loss in the river channel and realizing the maintenance of the river channel ecological environment; The rotation movement can be transmitted between the sleeve bodies, enabling some sludge to rise and be oxidized by light. Without additionally setting a light source, the photocatalysis efficiency of sulfide in the sludge is improved. Description of the Drawings

[0015] Figure 1 It is a top view of a device for removing sulfide from river sludge; Figure 2Front view of a device for removing sulfide from river sludge; Figure 3 Schematic diagram of the position of the pipe hole and the sleeve body; Figure 4 Schematic diagram of the structure of the auxiliary part; Figure 5 Schematic diagram of the structure of the guide vane; Figure 6 Schematic diagram of the connection between the connecting rod and the base; Figure 7 Schematic diagram of the position of the guide plate.

[0016] Reference numerals in the drawings: bracket 1; treatment part 2; circulation pipe 21; pipe hole 22; feeding part 3; base body 31; main pipe 32; branch pipe 33; feeding pipe 34; auxiliary part 4; sleeve body 41; circulation hole 42; fin 43; spring 44; connecting ring 45; guide vane 5; support column 50; connecting rod 6; hinge joint 7; guide plate 8. Detailed implementation manners

[0017] The technical solutions of the present invention will be further described in detail below in combination with the detailed implementation manners and the drawings: Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] See the attached Figure 1 - attached Figure 4 A device for removing sulfide from river sludge includes: a bracket 1 and a treatment part 2. The treatment parts 2 are arranged at intervals in the horizontal direction within the bracket 1. Each treatment part 2 is connected to the same feeding part 3. The treatment part 2 includes circulation pipes 21 arranged at intervals in the vertical direction. The circulation pipes 21 have pipe holes 22, and the feeding part 3 can inject a purification medium and release it from the pipe holes 22.

[0019] The circulation pipes 21 arranged longitudinally at intervals in one treatment part 2 can form an obstruction to the sludge, reducing the speed of the sludge passing through the device. At the same time, the multiple treatment parts 2 are arranged at intervals horizontally. On the premise of allowing the sludge to pass through without blockage, a multi-layer deceleration of the sludge passing through in the horizontal and vertical directions is formed, increasing the contact time between the sludge and the released purification medium, enabling the sulfide in the sludge to fully react with the purification medium, and improving the removal ability of the purification medium for the sulfide in the sludge; during the process of purifying the sludge, a power device is required to achieve the suction of water flow, that is, to make the water body flow and carry the sludge through the device. The multi-layer arranged circulation pipes 21 form a deceleration and dispersion of the sludge, avoiding the blockage of the sludge in the subsequent channels caused by the sludge concentrating and passing through the device directly, which helps to improve the treatment efficiency of the sludge after removing sulfide.

[0020] Auxiliary parts 4 are provided at intervals on the circulation pipe 21. The auxiliary part 4 includes a sleeve body 41. The sleeve body 41 is sleeved on the circulation pipe 21 and can rotate. The sleeve body 41 has a circulation hole 42, and fins 43 are provided on the outer wall of the sleeve body 41.

[0021] The fins 43 on the outer wall of the sleeve body 41 can contact the passing sludge and water body, prompting the sleeve body 41 to rotate, so that the sleeve body 41 drives the external fins 43 to generate a swirl. At this time, the purification medium released outward from the pipe hole 22 of the circulation pipe 21 can form a diffusion outside the circulation pipe 21 under the action of the swirl, enabling the sludge passing between adjacent circulation pipes 21 to also contact the purification medium, further realizing the effective removal of sulfides in the sludge and improving the removal rate of sulfides in river sludge.

[0022] The pipe hole 22 is opened towards the tail of the bracket 1. The pipe hole 22 is opened towards the tail of the bracket 1, reducing the risk of sludge directly entering the pipe hole 22 and improving the release stability of the purification medium. The orientation of the pipe hole 22 is the same as the direction of sludge passage. When the sludge and water body pass outside the circulation pipe 21, the flowing water body and sludge form a pressure difference with the inside of the circulation pipe 21. The purification medium inside the circulation pipe 21 is released outward under the action of the pressure difference, realizing the discharge of the purification medium without external power equipment. Moreover, as the sewage flow rate increases, the pressure difference between the inside and outside of the circulation pipe 21 becomes larger, and the purification medium is released more rapidly, realizing the adaptive adjustment of the release amount of the purification medium according to the sewage passing speed, avoiding the possibility of waste of resources caused by excessive release of the purification medium under slow flow conditions, and reducing the use cost of the purification medium.

[0023] The fins 43 are spirally wound around the outer wall of the sleeve body 41, and the width of the contact part of the fins 43 with the sleeve body 41 is smaller than the width of the extending part of the fins 43 outside the sleeve body 41.

[0024] The fins 43 are helically wound and extend outward from the sleeve body 41. Through the wound fins 43, the cutting of the sludge passing through can be achieved, the dispersion of the sludge before passing through can be realized, and the effective separation of large sand and gravel and other sundries in the sludge can be achieved. On the one hand, the sludge passing through the device is homogenized, the degree of full reaction between the purification medium and sulfide is improved, and the situation that the inside of the agglomerated sludge cannot contact the purification medium is avoided. On the other hand, large sand and gravel are intercepted, the wear of the flow pipe 21 caused by their passing through with the sewage is reduced, and the risk of blocking the pipe holes 22 is reduced, improving the stability of the purified sludge and the service life of the device. When the sewage passes through, the sleeve body 41 drives the fins 43 to rotate. At this time, the rotating fins 43 can realize the transfer of the sludge along the winding direction of the fins 43. Since the distribution of the sludge in the horizontal direction is likely to be uneven when passing through the device, by rotating the fins 43 to laterally transfer the sludge, the sludge passing through the whole device can be evenly distributed in the horizontal direction, which is beneficial to the balanced discharge of the sludge after sulfide removal, reduces the blockage in the process of sludge discharge and subsequent treatment and transfer, and improves the overall efficiency of sludge purification. On the other hand, the sludge can be evenly distributed in the river channel, which is beneficial to reducing the possibility of local sediment loss in the river channel and realizing the maintenance of the river channel ecological environment.

[0025] There is a gap between adjacent auxiliary parts 4 on the same flow pipe 21, and a spring 44 is sleeved on the flow pipe 21 at the gap.

[0026] The setting of the spring 44 enables the auxiliary parts 4 on the same flow pipe 21 to rotate synchronously, that is, when the sludge passes through the sleeve body 41 from one side, the rotation of a single sleeve body 41 drives the rotation of other sleeve bodies 41, realizing the rapid dispersion and transfer of the sludge from one side to the other side, and improving the degree of balanced distribution of the sludge after release; during the process of the sleeve body 41 being disturbed by the sewage, the sleeve bodies 41 can approach and move away from each other by passing through and squeezing the spring 44, thereby realizing the adjustment of the position of the sleeve body 41 and reducing the possibility of sludge blocking between adjacent upper and lower sleeve bodies 41.

[0027] Both ends of the sleeve body 41 are provided with connecting rings 45. One end face of the connecting ring 45 has a snap ring assembled with the end of the sleeve body 41. The inner ring surface of the connecting ring 45 is matched with and rotatably connected to the flow pipe 21, and there is an annular space between the inner wall of the sleeve body 41 and the outer wall of the flow pipe 21.

[0028] An annular space outside the flow pipe 21 is formed by connecting the connecting ring 45 with the sleeve body 41. The purification medium flowing out of the pipe holes 22 of the flow pipe 21 can be temporarily stored in the annular space and is released outward by rotation through the flow holes 42 along with the rotation of the sleeve body 41, that is, the uniform release of the purification medium is realized through the hydrodynamic force of the external sewage, improving the degree of full contact between the purification medium and the sludge and the removal efficiency of sulfide in the sludge.

[0029] The upper and lower adjacent fins 43 are arranged in cooperation.

[0030] The fins 43 outside each sleeve body are arranged at a close distance from the fins 43 adjacent to them above and below, but do not interfere with each other.

[0031] Through the cooperatively arranged fins 43, when one of the fins 43 rotates along with the sleeve body 41, the sludge and water carried by it can promote the rotation of the sleeve bodies 41 adjacent to it above and below, realizing the rotation of the sleeve bodies 41 at different heights, which helps to transfer part of the bottom sludge upward, enabling part of the sludge to come into contact with light upward, promoting the oxidation of sulfide in the sludge by the light above the water surface. Without additionally setting a light source, the photocatalysis efficiency of sulfide in the sludge is improved.

[0032] The feeding member 3 includes a hollow matrix 31. Each treatment member 2 is provided with a matrix 31 on both sides. One side of the matrix 31 is connected to the end of the circulation pipe 21, and the other side of the matrix 31 is provided with a main pipe 32. One side of the main pipe 32 is connected to each matrix 31 through a branch pipe 33, and the other side of the main pipe 32 is connected to a feeding pipe 34. The feeding pipe 34 passes through and is connected to the bracket 1. By adding a purification medium into the feeding pipe 34, after the purification medium reaches the main pipe 32, it is dispersed into each matrix 31 through each branch pipe 33, and the hollow matrix 31 releases the purification medium outward through the pipe holes 22 on each connected circulation pipe 21. The feeding pipes 34 located on both sides facilitate the addition of the purification medium by personnel at a relatively low height position, reducing the difficulty of the feeding operation.

[0033] See the appendix Figure 5 The branch pipe 33 is connected to the upper part of the matrix 31. There is a guide vane 5 spirally extending longitudinally inside the matrix 31, and there is a side hole on the side of the matrix 31 connected to the circulation pipe 21. The purification medium can reach the side hole through the guide vane 5.

[0034] There is a vertical support column 50 at the center inside the matrix 31, and the guide vane 5 is spirally wound around the support column 50.

[0035] The branch pipe 33 is connected to the upper side of the matrix 31. The purification medium flowing out of the branch pipe 33 can reach each side hole along the guide vane 5 under the action of gravity, realizing the uniform distribution of the purification medium in each circulation pipe 21.

[0036] See the appendix Figure 6 - appendix Figure 7 For the same feeding member 3, the matrices 31 are provided with a connecting rod 6 on one side, a hinge joint 7 is fixed on one side of the matrix 31, the connecting rod 6 is hinged to each hinge joint 7, the bracket 1 has a head close to the sludge source, and a guide plate 8 is connected between two matrices 31 close to the head. The guide plate 8 is inclined downward towards the head, and there is a height interval between the bottom of the bracket 1 and the end of the guide plate 8.

[0037] The branch pipe 33 is rotatably connected to the matrix 31, and the feeding pipe 34 is rotatably connected to the bracket 1.

[0038] When the sewage carrying sludge passes through the support 1 at a relatively high speed, the sewage and sludge first come into contact with the deflector 8, causing the two substrates 31 connected to the deflector 8 to rotate at the connection with the branch pipe 33. Synchronously, under the action of the connecting rod 6, the substrate 31 near the head swings downward, and the substrate 31 far from the head swings upward, realizing the dislocation of each treatment part 2 in the height position, enhancing the blocking ability of the sludge and sewage, thereby slowing down the sludge passing rate, realizing the full contact reaction between the sludge and the purification medium, reducing the possibility that the sulfide removal degree is poor due to the too fast passing speed of the sludge, and each treatment part 2 moving in the height direction can promote the upward disturbance of the water flow, realizing the upward floating of the bottom sludge, increasing the probability of the bottom sludge being photo-oxidized upward, and improving the photo-oxidation efficiency of sulfide; When the sewage carrying sludge passes through the support 1 at a relatively low speed, the impact force on the deflector 8 is small, and each treatment part 2 can maintain a relatively horizontal state, ensuring that the sludge can pass through the treatment part 2 step by step at a normal speed, and avoiding the low sludge treatment efficiency caused by the too slow passing speed of the sludge.

[0039] The above solution realizes the adaptive adjustment of the sludge passing rate by the treatment parts 2 through multiple movable and dislocatable treatment parts 2, improves the adaptability of the device in different working environments, does not require manual intervention, and reduces the operation difficulty and the stability of sulfide removal.

[0040] A method for removing sulfide from river sludge uses the above device for removing sulfide from river sludge. The method specifically includes the following steps: Step 1: Install the support in a channel through which the sludge can pass, so that the treatment part 2 can contact the sludge; Step 2: Add the purification medium through the feeding part 3, and the purification medium is released into the river water through the pores of the circulation pipe; Step 3: While the river water carries the sludge through each auxiliary part, the sludge contacts the purification medium to remove sulfide.

[0041] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A device for removing sulfide from river sludge, comprising: A support (1) and a processing element (2), characterized in that the processing elements (2) are arranged at intervals in the horizontal direction within the support (1), each of the processing elements (2) is connected to an identical feeding element (3), the processing element (2) comprises a flow tube (21) arranged at intervals in the vertical direction, the flow tube (21) has a tube hole (22), and the feeding element (3) can inject a purification medium and release it from the tube hole (22).

2. The device for removing sulfide from river sludge according to claim 1 is characterized in that: An auxiliary component (4) is arranged at intervals on the circulation tube (21), the auxiliary component (4) comprising a sleeve (41), the sleeve (41) being sleeved on the circulation tube (21) and being rotatable, the sleeve (41) having a circulation hole (42), and a fin (43) being arranged on an outer wall of the sleeve (41).

3. The device for removing sulfide from river sludge according to claim 1 is characterized in that: The tube hole (22) is opened toward the rear end of the bracket (1).

4. The device for removing sulfide from river sludge according to claim 2 is characterized in that: The fin (43) is spirally wound around the outer wall of the sleeve (41), and the width of the portion of the fin (43) in contact with the sleeve (41) is smaller than the width of the portion of the fin (43) extending outside the sleeve (41).

5. The device for removing sulfide from river sludge according to claim 2 is characterized in that: There is a gap between adjacent auxiliary components (4) on the same circulation tube (21), and the circulation tube (21) is provided with a spring (44) at the gap.

6. The device for removing sulfide from river sludge according to claim 2, characterized in that: Connecting rings (45) are provided at both ends of the sleeve (41); one end surface of the connecting ring (45) has a clamping ring assembled with the end of the sleeve (41); the inner ring surface of the connecting ring (45) cooperates with the flow tube (21) and is rotatably connected thereto; an annular space exists between the inner wall of the sleeve (41) and the outer wall of the flow tube (21).

7. The device for removing sulfide from river sludge according to claim 2 is characterized in that: The fins (43) adjacent to each other vertically are arranged in coordination.

8. The device for removing sulfide from river sludge according to claim 2 is characterized by: The feeding member (3) comprises a hollow base (31), each of the processing members (2) is provided with the base (31) on both sides, one side of the base (31) is connected to the end of the circulation pipe (21), and the other side of the base (31) is provided with a main pipe (32), one side of the main pipe (32) is connected to each of the bases (31) via a branch pipe (33), and the other side of the main pipe (32) is connected to a feeding pipe (34), and the feeding pipe (34) passes through the bracket (1) for connection.

9. The device for removing sulfide from river sludge according to claim 8, characterized in that: The branch pipe (33) is connected to the upper part of the base (31), and the base (31) has a guide plate (5) extending in a longitudinal spiral. The side of the base (31) has a side hole connected to the flow pipe (21), and the purification medium can reach the side hole through the guide plate (5).

10. A method for removing sulfide from river sludge, characterized in that: The device for removing sulfide from river sludge according to claim 2 comprises the following steps: Step 1: installing the support (1) in a channel through which sludge can pass, so that the treatment element (2) can contact the sludge; Step 2: adding the purification medium through the adding member (3), and releasing the purification medium into the river water through the tube hole (22) of the circulation tube (21); Step 3: When the river water carries the sludge through each of the auxiliary components (4), the sludge contacts the purification medium to remove sulfide.

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