Environment-friendly magnetic flocculation wastewater treatment equipment for dredging

Abstract

The application discloses an environment-friendly magnetic flocculation wastewater treatment equipment for dredging, and relates to the technical field of sewage purification. The equipment comprises a stacking box, a dosing barrel one, a medicine releasing assembly, a dosing barrel two, a conveying belt, a collecting assembly and a conveying mechanism. The dosing barrel one and the dosing barrel two are installed on the stacking box in a stepped manner, the medicine releasing assembly is installed on the dosing barrel one, the dosing barrel one is divided into a first stirring area and a second stirring area, and the medicine releasing assembly simultaneously releases a reaction agent into the first stirring area and the second stirring area and stirs. The conveying belt and the permanent magnetic roller are arranged outside the dosing barrel one and the dosing barrel two, the stripping effect of flocculation groups in the sewage can be more intuitively judged, the conveying belt and the permanent magnetic roller are both external equipment, the equipment is open, there is no sealing or barrel environment, the magnetic separation equipment can be better and more conveniently cleaned and maintained, and the service life of the wastewater treatment device is maintained.

Description

Technical Field

[0001] This invention relates to the field of wastewater purification technology, specifically to a magnetic flocculation wastewater treatment device for environmentally friendly dredging. Background Technology

[0002] Environmental dredging is a key project for aquatic ecological restoration and pollution control. During the process, a large amount of high-concentration wastewater is generated. This wastewater contains a large amount of pollutants such as suspended solids (SS), organic matter, heavy metal ions, fluoride ions, and dredging sediment debris. Its composition is complex, and direct discharge will seriously disrupt the ecological balance of aquatic bodies and threaten the safety of the surrounding environment. Therefore, the efficient treatment of environmental dredging wastewater, through physical and chemical means to stabilize and solidify pollutants, remove residual harmful substances, and make the water quality meet the discharge standards or reuse requirements, is of great significance for ensuring the ecological safety of aquatic areas and promoting the sustainable use of water resources.

[0003] In the field of advanced dredging wastewater treatment, magnetic coagulation clarification technology is widely used in dredging wastewater treatment scenarios because its removal efficiency for pollutants such as suspended solids (SS), total phosphorus (TP), chemical oxygen demand (COD), and fluoride ions is significantly better than that of conventional coagulation sedimentation technology. However, traditional magnetic flocculation wastewater treatment devices have many technical shortcomings when adapting to the needs of environmental dredging: on the one hand, they require the installation of dedicated facilities such as sedimentation tanks and separation tanks, resulting in a complex system structure, large footprint, and difficulty in adapting to the limited space of dredging sites; on the other hand, the core magnetic separation equipment and sludge recovery system are usually built into the bottom of the tank or in a sealed container, forming a closed or semi-closed environment. The large amount of sediment and debris contained in dredging wastewater can easily cause equipment blockage. Moreover, the closed structure not only makes it difficult to intuitively judge the floc removal effect during the dredging wastewater treatment process, but also makes equipment cleaning and maintenance operations cumbersome and difficult, seriously affecting the stability and service life of the device in dredging operations, and failing to efficiently adapt to the treatment needs of environmental dredging wastewater.

[0004] In view of the shortcomings of the existing technologies, there is an urgent need to develop a magnetic flocculation wastewater treatment device that is compact, easy to maintain, highly adaptable, and can accurately match the characteristics of environmentally friendly dredging wastewater, so as to solve the application pain points of traditional equipment in dredging scenarios. Summary of the Invention

[0005] The purpose of this invention is to provide an environmentally friendly magnetic flocculation wastewater treatment device for dredging, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly dredging magnetic flocculation wastewater treatment device, comprising a stacking tank, a first dosing tank, a dosing assembly, a second dosing tank, a conveyor belt, a collection assembly, and a conveying mechanism;

[0007] Dosing tank 1 and dosing tank 2 are installed in a stepped manner on the stacking box. The dosing component is installed in dosing tank 1. Dosing tank 1 is divided into a first stirring zone and a second stirring zone. The dosing component simultaneously adds reactant to the first stirring zone and the second stirring zone and stirs them.

[0008] The conveyor belt is installed on one side of the stacking box. The liquid falls onto the conveyor belt through dosing tank 1 and dosing tank 2, where the flocs and liquid are separated. The collection component is installed on the side of the conveyor belt away from the unloading end. The collection component is used to peel off the flocs on the conveyor belt. The collection component collects the flocs to the conveying mechanism. The conveying mechanism further separates the liquid and flocs and transfers the flocs and liquid to the stacking box and dosing tank 2, respectively.

[0009] Furthermore, the dosing tank includes an outer tank, a layered tank, and a partition frame. The partition frame is installed on the inner wall of the outer tank and is used to place the layered tank. The upper part of the layered tank is the first stirring zone, and the lower part of the layered tank is the second stirring zone. After the sewage enters the dosing tank, it is first collected in the layered tank. A concave fold is provided on one side of the layered tank, and a hole is formed between the concave fold and the inner wall of the outer tank. The sewage can overflow from the hole to the second stirring zone.

[0010] Furthermore, a top cover is installed at the top of the outer barrel, and the top cover is a non-sealing cover;

[0011] The dispensing assembly includes a top chamber cylinder installed on the top cover. The top chamber cylinder is cylindrical with an opening at the bottom. A feed pipe is provided at the top chamber cylinder for adding coagulant. A dispensing pipe is rotatably installed in the middle of the top chamber cylinder. A dial wheel is fixed on the surface of the dispensing pipe. The bottom of the dial wheel is circular and matches the diameter of the inner wall of the top chamber cylinder. An insert is provided between the bottom circular plate and the dispensing pipe. During rotation, the dial wheel contacts and taps the coagulant. A gap is provided between the bottom circular plate and the top chamber cylinder in the vertical direction, and the coagulant is discharged from the gap.

[0012] Furthermore, the surface of the dispensing tube is provided with a stirring paddle, which is located inside the stratification tank and is used to stir the liquid inside the stratification tank.

[0013] The surface of the dispensing tube is also equipped with a second stirring paddle, which is used to stir the liquid in the second stirring zone. The end of the dispensing tube is also equipped with a second dial wheel, which has a shaft in the middle. The shaft is fixed to the inner wall of the dispensing tube and its diameter is smaller than the inner wall diameter of the dispensing tube. The bottom of the second dial wheel is also in the shape of a disc and its diameter is larger than the inner wall diameter of the dispensing tube. An insert is also provided between the bottom disc and the shaft.

[0014] Furthermore, a sprocket is rotatably mounted on the top of the top chamber, and the sprocket is coaxially fixed to the surface of the delivery tube. A drive source is also installed on the top cover, and a sprocket is fixed to the output end of the drive source. The sprockets are connected by a chain.

[0015] Furthermore, the first dosing tank is provided with a connecting pipe that communicates with the interior of the first dosing tank. The connecting pipe is located below the stratification tank, and the sewage below the stratification tank can overflow from the connecting pipe into the second dosing tank.

[0016] A top cover is also installed at the top of the dosing tank 2. A drive source 2 is installed on the top cover. An agitator 3 is fixed at the output end of the drive source 2. The agitator 3 is located inside the dosing tank 2 and is used to mix the magnetic seeds and flocculants.

[0017] Furthermore, the conveyor belt includes a conveyor belt frame on which a magnetic conveyor belt is mounted, the magnetic conveyor belt being magnetic and having a rubber matrix.

[0018] The conveyor belt is installed on one side of the stacking box and below the liquid outlet. The liquid in the dosing tank overflows through the liquid outlet and falls onto the magnetic conveyor belt. The conveyor belt is set at an inclination angle of 5°-15°, and the conveying direction of the magnetic conveyor belt is opposite to the unloading end.

[0019] Furthermore, the collection component includes two fixed plates fixed to both sides of the conveyor belt frame, and a permanent magnet roller is rotatably installed between the two fixed plates. The curved surface of the permanent magnet roller is made of neodymium iron boron permanent magnet material and its magnetism is greater than that of the magnetic conveyor belt. The minimum distance between the curved surface of the permanent magnet roller and the magnetic conveyor belt is 0.5cm-2cm.

[0020] One of the fixed plates and one of the conveyor belt frames are rotatably mounted with a shaft wheel, and the two shaft wheels are connected by a transmission belt. A drive source four is mounted on the conveyor belt frame, and the drive source four is used to drive the conveyor belt.

[0021] Furthermore, a scraper is installed at one end of the magnetic conveyor belt, the scraper is in contact with the permanent magnet drum, the conveying mechanism includes a tube, one end of the tube is close to the collecting component, and the end of the tube close to the collecting component has a feed inlet, the width of the feed inlet is at least greater than the width of the scraper, and the scraper is inclined and faces the feed inlet.

[0022] An auger is rotatably installed between the inner walls of both ends of the cylinder, and a guide tube is installed at the end of the cylinder away from the feed inlet. The guide tube is used to connect the cylinder to the inside of the stacking box. A drive source three is installed at one end of the cylinder to provide power to the auger. A filter plate is installed at the end of the cylinder away from the drive source three. A transfer box is fixed on the side of the filter plate away from the cylinder. The liquid filtered by the filter plate enters the transfer box. A liquid pump is installed on the outside of the transfer box to extract the liquid in the transfer box. A rotary pipe is installed at the output end of the liquid pump. The other end of the rotary pipe is connected to the inside of the dosing tank two.

[0023] Furthermore, the stacking box includes a box body, with a discharge pipe equipped with a valve at the bottom of one side of the box body, and the top of the stacking box body is stepped.

[0024] The magnetic flocculation wastewater treatment device also includes an integrated base, on which the stacking box, collection components and conveying mechanism are all integrated and installed.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] This environmentally friendly dredging magnetic flocculation wastewater treatment equipment, through the installation of conveyor belts and permanent magnet rollers, both of which are located outside the dosing tanks 1 and 2, allows for a more direct assessment of the floc removal effect in the wastewater. Furthermore, since both the conveyor belts and permanent magnet rollers are external devices, the equipment is open, without any sealed or internal environment, which facilitates better and more convenient cleaning and maintenance of the magnetic separation equipment, thus extending the service life of the wastewater treatment equipment.

[0027] Meanwhile, the device adopts a stepped stacking box and integrated design, integrating the dosing tank, conveyor belt, collection components, and conveying mechanism into a single base, effectively reducing the equipment's footprint. Through the inclined conveyor belt and reasonable layout, the device can utilize space more efficiently, further reducing its footprint and significantly improving its flexibility. It is more suitable for treating effluent after sludge solidification. The stepped layout creates a liquid level difference between dosing tank one and dosing tank two, allowing gravity-driven liquid transfer without additional power, reducing energy consumption. It also ensures overflow stability, providing an orderly environment for staged dosing and reaction of chemicals, optimizing the continuity of the treatment process. The zoned dosing design enables precise dosing of coagulants and magnetic seeds in different areas, combined with layered stirring, allowing the chemicals to diffuse evenly and react fully, avoiding waste and floc agglomeration, improving the magnetic flocculation effect, facilitating efficient subsequent separation processes, and ensuring effluent quality.

[0028] The zoned feeding design enables precise distribution of coagulant and magnetic seed in different areas. Combined with layered stirring, it allows the agents to spread evenly and react fully, avoiding agent waste and floc agglomeration, improving the magnetic flocculation effect, facilitating efficient subsequent separation processes, and ensuring the quality of effluent.

[0029] In addition, the amount of sludge generated is reduced by recycling and reusing magnetic seeds. At the same time, the device uses filter plates and screw conveyors to press and dewater the sludge, further reducing the water content of the sludge, reducing its volume and weight. The device then uses a rotary pipe to transport the filtered liquid back to the second dosing tank for purification, reducing the amount of wastewater discharged and lowering the risk of secondary pollution. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the left axial side structure of the present invention;

[0032] Figure 3 This is a schematic cross-sectional view of a portion of the dosing tank of the present invention;

[0033] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0034] Figure 5 For the present invention Figure 4 Enlarged schematic diagram of part A in the middle.

[0035] In the diagram: 1. Integrated base; 2. Stacking box; 201. Box body; 202. Discharge pipe; 3. Dosing tank one; 301. Outer tank; 302. Layered tank; 3021. Concave fold; 303. Divider frame; 4. Dosing assembly; 401. Top chamber cylinder; 4011. Feed pipe; 402. Dosing hopper; 403. Sprocket one; 404. Sprocket two; 405. Drive source one; 406. Dispensing pipe; 407. Dial wheel one; 408. Agitator one; 409. Agitator two; 410. Dial wheel two; 411. Shaft; 5. Dosing tank two; 501. Liquid outlet; 6. Drive source two; 7. Stirring paddle three; 8. Conveyor belt frame; 9. Magnetic conveyor belt; 10. Collection assembly; 1001. Fixing plate; 1002. Permanent magnet drum; 1003. Shaft wheel; 1004. Transmission belt; 1005. Scraper; 11. Conveying mechanism; 111. Cylindrical tube; 112. Feed inlet; 113. Screwdriver; 114. Drive source three; 115. Filter plate; 116. Guide tube; 117. Drive source four; 12. Transfer box; 13. Liquid pump; 14. Rotary pipe; 15. Top cover; 16. Connecting pipe. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] After being treated by the integrated magnetic flocculation purification vehicle, the wastewater can have significantly reduced levels of suspended solids (SS) and total phosphorus (TP), resulting in clear and transparent effluent.

[0038] like Figures 1-2As shown, this invention provides a technical solution: an environmentally friendly magnetic flocculation wastewater treatment device for dredging, comprising a stacking box 2, a first dosing tank 3, a dispensing assembly 4, a second dosing tank 5, a conveyor belt, a collection assembly 10, and a conveying mechanism 11. The first dosing tank 3 and the second dosing tank 5 are installed on the stacking box 2, which is stepped. The heights of the first dosing tank 3 and the second dosing tank 5 on the stacking box 2 differ. Specifically, to facilitate liquid flow under gravity, the lowest liquid level in the first dosing tank 3 is greater than the highest liquid level in the second dosing tank 5. During wastewater purification, the raw wastewater is poured into the first dosing tank 3. After the addition of coagulant and magnetic seed, the raw water is transferred to the second dosing tank 5 under gravity. The wastewater then enters the second dosing tank 5. After adding flocculants and defluorinating agents, and thoroughly stirring the wastewater, the wastewater overflows from the dosing tank 25 and falls onto the conveyor belt installed on one side of the stacking box 2. The conveyor belt is a magnetic flexible belt. When the wastewater falls onto the conveyor belt, the magnetic flocs will be adsorbed onto the magnetic flexible belt. The liquid is discharged under gravity, while the direction of movement of the magnetic flexible belt is opposite to the direction of liquid flow, transferring the magnetic flocs to the other end. When the flocs reach the discharge end of the conveyor belt, the collection component 10 collects the flocs to the conveying mechanism 11. The conveying mechanism 11 further separates the liquid and sludge flocs, and transfers the sludge with less water content to the stacking box 2, and the liquid to the dosing tank 25 for further decontamination.

[0039] like Figure 3 and Figure 4 As shown, to ensure the smooth implementation of the above embodiments, it is necessary to understand that wastewater treatment requires the addition of coagulants, defluoridators, and flocculants. To achieve magnetic flocculation, magnetic seeds also need to be added to the wastewater. To improve the efficiency of adding each reagent and magnetic seed, the dosing tank 3 is designed with a double-layer structure. This double-layer structure is distributed vertically, allowing wastewater to transfer from top to bottom under gravity. The dosing tank 3 includes an outer tank 301, a layered tank 302, and a separator 303. The separator 303 is installed... On the inner wall of the outer barrel 301, the partition rack 303 is used to place the layered barrel 302. The upper part of the layered barrel 302 is the first mixing zone, and the lower part of the layered barrel 302 is the second mixing zone. Both the first and second mixing zones are used to hold sewage. After the sewage enters the dosing tank 3, it is first held in the layered barrel 302. A concave fold 3021 is provided on one side of the layered barrel 302. A hole is formed between the concave fold 3021 and the inner wall of the outer barrel 301, and the sewage can overflow from the hole into the second mixing zone below the layered barrel 302.

[0040] like Figure 4 and Figure 5As shown, a dispensing assembly 4 is installed in the middle of the dosing tank 3. This dispensing assembly 4 can simultaneously dispense coagulant and magnetic seed, and can dispense in separate sections. A top cover 15 is installed on the top of the outer tank 301. The top cover 15 is a non-sealed cover to prevent pressure changes inside the dosing tank 3 from affecting the liquid output and to facilitate the filling of wastewater. When treating wastewater, the original wastewater can be directly poured into the dosing tank 3 through the non-sealed top cover 15 via pipes, etc. The dispensing assembly 4 includes a top chamber cylinder 401 installed on the top cover 15. The top chamber cylinder 401 is cylindrical and has an open bottom. An inlet pipe 4011 is provided at the top chamber cylinder 401 for dispensing coagulant. A dispensing pipe 406 is rotatably installed in the middle of the top chamber cylinder 401. The surface of the dispensing pipe 406 is fixed. There is a dial wheel 407, the bottom of which is circular and matches the diameter of the inner wall of the top tank 401. An insert is provided between the bottom circular plate and the delivery pipe 406. When the coagulant is added, the delivery pipe 406 will rotate continuously. During the rotation, the dial wheel 407 contacts and beats the coagulant. A gap is provided between the bottom circular plate and the top tank 401 in the vertical direction. The coagulant is discharged from the gap and is sprinkled out during the beating and rotation of the dial wheel 407, which can be relatively evenly distributed on the liquid surface. A stirring paddle 408 is provided on the surface of the delivery pipe 406. The stirring paddle 408 is located in the stratification tank 302 and is used to stir the liquid in the stratification tank 302 to quickly mix the coagulant and the sewage liquid.

[0041] like Figure 4 As shown, below the first stirring paddle 408, the surface of the dispensing pipe 406 is also provided with a second stirring paddle 409. The second stirring paddle 409 is used to stir the liquid in the second stirring zone. The end of the dispensing pipe 406 is also provided with a second dial wheel 410. The second dial wheel 410 has a shaft 411 in the middle. The shaft 411 is fixed to the inner wall of the dispensing pipe 406 and its diameter is smaller than the inner wall diameter of the dispensing pipe 406 to avoid clogging of the magnetic seed. Similarly, the bottom of the second dial wheel 410 is also in the shape of a disc and its diameter is larger than the inner wall diameter of the dispensing pipe 406. The bottom disc is also fixed to the shaft 411 with a insert. During rotation, the second dial wheel 410 contacts the magnetic seed and taps the magnetic seed, scattering the magnetic seed in a relatively uniform state.

[0042] like Figure 4 and Figure 5 As shown, a sprocket 403 is rotatably mounted on the top of the top chamber 401. The sprocket 403 is coaxially fixed to the surface of the delivery tube 406. A drive source 405 is also installed at the top cover 15. A sprocket 404 is fixed to the output end of the drive source 405. The sprocket 403 and the sprocket 404 are connected by a chain. This drive can realize the control operation of the delivery tube 406.

[0043] In other words, both the coagulant and the magnetic seed are added through the dispensing assembly 4. To facilitate the addition of the magnetic seed, a dosing hopper 402 is fixed at the top of the dispensing pipe 406. The device can be used to add the reagent manually or by using a metering pump, dry powder dispensing system, etc., to connect the feed pipe 4011 and the dispensing pipe 406 to add the reactant.

[0044] Specifically, magnetic flocculation clarification technology is usually divided into three stages. First, coagulant is added to the wastewater, and after stirring, magnetic seeds are added, followed by the addition of flocculant. In this embodiment, coagulant is added to the first stirring zone, magnetic seeds are added to the second stirring zone, and then the wastewater is discharged to the dosing tank 2 5, where flocculant is added. To ensure the smooth implementation of this embodiment, the bottom end of the dispensing pipe 406 is located in the second stirring zone. Magnetic seeds are added to the dispensing pipe 406 through the dosing hopper 402. The magnetic seeds enter the second stirring zone through the dispensing pipe 406 and are evenly spread and stirred by the dial wheel 2 410, thus completing the dispensing of magnetic seeds. The feed pipe 4011 is used to dispense coagulant. The coagulant enters the top chamber 401 from 4011 and is located outside the dispensing pipe 406, separate from the path of magnetic seed dispensing. It is then evenly spread to the first stirring zone by the rotation of the dial wheel 1 407.

[0045] The dosing tank 1 3 is equipped with a connecting pipe 16 that communicates with the interior of the dosing tank 1 3. The connecting pipe 16 is located below the stratification tank 302. The sewage below the stratification tank 302 can overflow from the connecting pipe 16 into the dosing tank 2 5. The position of the connecting pipe 16 is at least at the top of the dosing tank 2 5 and can be adjusted according to the actual situation. The dosing tank 2 5 is used to add flocculant to the sewage. A top cover 15 is also installed at the top of the dosing tank 2 5. The top cover 15 is also a non-sealed cover. A drive source 2 6 is installed on the top cover 15. A stirring paddle 3 7 is fixed at the output end of the drive source 2 6. The stirring paddle 3 7 is located inside the dosing tank 2 5 and is used to mix the magnetic seeds and flocculant.

[0046] Looking back Figure 2A liquid outlet 501 is provided at the top of the dosing tank 2 5 for the overflow of waste liquid inside the dosing tank 2 5. The overflowing waste liquid falls onto a conveyor belt, which includes a conveyor belt frame 8. A magnetic conveyor belt 9 is installed on the conveyor belt frame 8. The magnetic conveyor belt 9 is magnetic and has a rubber base, so it can be used to transport liquids and adsorb magnetic materials. The conveyor belt is installed on one side of the stacking box 2 and below the liquid outlet 501. After the liquid in the dosing tank 2 5 overflows through the liquid outlet 501, it falls onto the magnetic conveyor belt 9. The system is tilted at an angle of 5°-15°. After the liquid falls onto the magnetic conveyor belt 9, it moves towards the discharge end of the conveyor belt under the action of gravity. Meanwhile, the magnetic flocs formed by the aforementioned process adhere to the magnetic conveyor belt 9 under the magnetic adsorption effect. It should be noted that the conveying direction of the magnetic conveyor belt 9 is away from the discharge end. In other words, when the magnetic flocs are adsorbed onto the magnetic conveyor belt 9, they will move away from the discharge end of the conveyor belt due to the movement of the magnetic conveyor belt 9, thereby achieving the separation of the liquid and the flocs.

[0047] To achieve efficient stripping and collection of flocs, a collection assembly 10 is installed on the side of the conveyor belt frame 8 away from its discharge end. This collection assembly 10 includes two fixing plates 1001 fixed to both sides of the conveyor belt frame 8. A permanent magnet roller 1002 is rotatably mounted between the two fixing plates 1001. The curved surfaces of the permanent magnet roller 1002 are made of neodymium iron boron permanent magnet material, with a magnetism greater than that of the magnetic conveyor belt 9. Therefore, when the magnetic conveyor belt 9 transports the flocs to the permanent magnet roller 1002, due to the magnetism... The magnetic roller 1002 has a stronger magnetism, which peels the magnetic flocs off the magnetic conveyor belt 9. To ensure the adsorption effect of the permanent magnet roller 1002, the distance between the curved surface of the permanent magnet roller 1002 and the magnetic conveyor belt 9 is 0.5cm-2cm. A scraper 1005 is also installed at one end of the magnetic conveyor belt 9. The scraper 1005 is in contact with the permanent magnet roller 1002 and slides on its surface when the permanent magnet roller 1002 rotates, which can scrape off the flocs on the surface of the permanent magnet roller 1002.

[0048] In other words, the above structure can achieve efficient separation of flocs and liquid. The conveyor belt and permanent magnet roller 1002 are both located outside the dosing tank 1 3 and dosing tank 2 5, which allows for a more intuitive assessment of the floc removal effect in the wastewater. Furthermore, since both the conveyor belt and permanent magnet roller 1002 are external devices, the equipment is open and there is no sealed or internal environment, which allows for better and more convenient cleaning and maintenance of the magnetic separation equipment, thus extending the service life of the wastewater treatment equipment.

[0049] like Figure 2As shown, a shaft wheel 1003 is rotatably mounted on one side of one of the fixed plates 1001 and on one side of the conveyor belt frame 8. The two shaft wheels 1003 are connected by a transmission belt 1004. That is, when the conveyor belt moves, the permanent magnet drum 1002 rotates synchronously. A drive source 4 117 is mounted on the conveyor belt frame 8. The drive source 4 117 is used to drive the conveyor belt.

[0050] like Figure 2 As shown, to ensure the smooth implementation of the above embodiments, it is necessary to understand that the conveying mechanism 11 includes a cylindrical tube 111, one end of which is close to the collecting assembly 10, and an inlet 112 is provided at the end of the cylindrical tube 111 close to the collecting assembly 10. The width of the inlet 112 is at least greater than the width of the scraper 1005. The scraper 1005 is inclined and faces the inlet 112. That is to say, the flocs stripped from the permanent magnet roller 1002 by the scraper 1005 will be scraped by the scraper 1005. Guided by the feed inlet 112, the material enters the cylinder 111. An auger 113 is rotatably installed between the inner walls of both ends of the cylinder 111. A conduit 116 is installed at the end of the cylinder 111 away from the feed inlet 112. The conduit 116 is used to connect the cylinder 111 with the inside of the stacking box 2. That is, when the auger 113 rotates and transports the flocs, the flocs will be transported to the stacking box 2 through the conduit 116. A drive source 3 114 is installed at one end of the cylinder 111 to provide power to the auger 113.

[0051] To reduce the moisture content of the recovered flocs, a filter plate 115 is installed at the end of the cylinder 111 furthest from the drive source 114. This means that one end of the auger 113 is rotatably mounted on the filter plate 115. Since the auger 113 also has a certain pressing effect when conveying the material to the end, the filter plate 115 can strip some of the moisture from the flocs, reducing their moisture content. A transfer box 12 is fixed to the side of the filter plate 115 furthest from the cylinder 111. The filtered liquid enters the transfer tank 12. A liquid pump 13 is installed on the outside of the transfer tank 12 to extract the liquid from the transfer tank 12. A rotary pipe 14 is installed at the output end of the liquid pump 13. The other end of the rotary pipe 14 is connected to the inside of the dosing tank 2 5 to transport the filtered liquid back to the dosing tank 2 5 for purification. It should be noted that the height of the rotary pipe 14 must be at least higher than the height of the liquid outlet 501 to prevent the liquid in the dosing tank 2 5 from overflowing from the rotary pipe 14.

[0052] Looking back Figure 1To ensure the smooth implementation of the above embodiments, it is necessary to understand that the stacking box 2 includes a box body 201, and a discharge pipe 202 with a valve is provided at the bottom of one side of the box body 201. It is also necessary to understand that the top of the box body 201 of the stacking box 2 is stepped, that is, the top of the box body 201 has two planes and the height of the two planes is different. The dosing tank 1 3 is installed at the higher plane and the dosing tank 2 5 is installed at the lower plane. The top height of the dosing tank 2 5 should not be higher than the height of the plane of the dosing tank 1 3 to ensure the overflow effect of the liquid.

[0053] The magnetic flocculation wastewater treatment device also includes an integrated base 1, wherein the stacking box 2, the collection component 10 and the conveying mechanism 11 are all integrated and installed on the integrated base 1.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A magnetic flocculation wastewater treatment apparatus for environmental dredging, characterized by, The application relates to a sewage treatment device. The sewage treatment device comprises a stacking box (2), a first dosing barrel (3), a reagent placing assembly (4), a second dosing barrel (5), a conveying belt, a collecting assembly (10) and a conveying mechanism (11). The first dosing barrel (3) and the second dosing barrel (5) are installed on the stacking box (2) in a stepped mode, the reagent placing assembly (4) is installed on the first dosing barrel (3), the first dosing barrel (3) is divided into a first stirring area and a second stirring area, and the reagent placing assembly (4) simultaneously places reagents into the first stirring area and the second stirring area and stirs the reagents. The conveying belt is installed on one side of the stacking box (2), liquid falls on the conveying belt through the first dosing barrel (3) and the second dosing barrel (5) and is separated from flocculation groups, the collecting assembly (10) is installed on the side, away from a discharging end, of the conveying belt, the collecting assembly (10) is used for stripping the flocculation groups on the conveying belt, the collecting assembly (10) collects the flocculation groups to the conveying mechanism (11), and the conveying mechanism (11) further separates liquid and the flocculation groups and respectively transfers the flocculation groups and the liquid to the stacking box (2) and the second dosing barrel (5). The conveying belt comprises a conveying belt frame (8), the conveying belt frame (8) is provided with a magnetic conveying belt (9), the magnetic conveying belt (9) comprises a rubber base and is magnetic, the conveying belt is installed on one side of the stacking box (2) and below a liquid outlet (501), and liquid in the second dosing barrel (5) falls on the magnetic conveying belt (9) after overflowing through the liquid outlet (501). The collecting assembly (10) comprises two fixed plates (1001) fixed on two sides of the conveying belt frame (8), a permanent magnetic roller (1002) is rotatably installed between the two fixed plates (1001), the curved surface of the permanent magnetic roller (1002) is made of a neodymium-iron-boron permanent magnetic material and has a magnetic force greater than that of the magnetic conveying belt (9), and the permanent magnetic roller (1002) is used for adsorbing the flocculation groups on the conveying belt. The first dosing barrel (3) comprises an outer barrel (301), a layered barrel (302) and a separation frame (303), the separation frame (303) is installed on the inner wall of the outer barrel (301), the layered barrel (302) is arranged on the separation frame (303), the first stirring area is arranged above the layered barrel (302), the second stirring area is arranged below the layered barrel (302), sewage is first stored in the layered barrel (302) after entering the first dosing barrel (3), a concave (3021) is arranged on one side of the layered barrel (302), a hole is formed between the concave (3021) and the inner wall of the outer barrel (301), and the sewage overflows from the hole to the second stirring area. A top cover (15) is installed on the top of the outer barrel (301), and the top cover (15) is a non-sealing cover. The medicine feeding assembly (4) comprises a top cabin cylinder (401) installed at the top cover (15), the top cabin cylinder (401) is cylindrical and is provided with an open bottom, a feeding pipe (4011) is arranged at the top cabin cylinder (401) for feeding coagulant, a feeding pipe (406) is rotatably installed in the middle of the top cabin cylinder (401), the bottom end of the feeding pipe (406) is located at the second stirring area, the top cabin cylinder (401) is coaxially arranged with the feeding pipe (406) and the diameter of the feeding pipe (406) is smaller than that of the top cabin cylinder (401), the feeding pipe (4011) is located in the top cabin cylinder (401) and outside the feeding pipe (406), a first pawl (407) is fixed on the surface of the feeding pipe (406), the bottom of the first pawl (407) is disc-shaped and is matched with the inner wall diameter of the top cabin cylinder (401), and a plug is arranged between the bottom disc and the feeding pipe (406), during rotation, the first pawl (407) contacts and beats the coagulant, the bottom disc is provided with a gap in the vertical direction between the top cabin cylinder (401), and the coagulant is discharged from the gap, and a feeding hopper (402) is arranged at the top end of the feeding pipe (406) for conveniently feeding magnetic seeds into the feeding pipe (406). A stirring paddle (408) is arranged on the surface of the feeding pipe (406) and is located in the layered barrel (302) for stirring the liquid in the layered barrel (302). A second stirring paddle (409) is further arranged on the surface of the feeding pipe (406) for stirring the liquid in the second stirring area, and a second pawl (410) is arranged at the end of the feeding pipe (406), the second pawl (410) is provided with a shaft (411) in the middle, the shaft (411) is fixed to the inner wall of the feeding pipe (406) and has a diameter smaller than that of the inner wall of the feeding pipe (406), the bottom of the second pawl (410) is also disc-shaped and has a diameter larger than that of the inner wall of the feeding pipe (406), and a plug is arranged between the bottom disc and the shaft (411). A connecting pipe (16) is arranged on the first feeding barrel (3) and is connected with the inside of the first feeding barrel (3), the connecting pipe (16) is located below the layered barrel (302), and the contaminated liquid below the layered barrel (302) can overflow from the connecting pipe (16) into the second feeding barrel (5). A top cover (15) is also installed at the top of the second feeding barrel (5), a driving source (6) is installed on the top cover (15), a stirring paddle (7) is fixed to the output end of the driving source (6) and is located in the second feeding barrel (5) for mixing magnetic seeds and flocculants.

2. The magnetic flocculation wastewater treatment equipment for environmental protection dredging according to claim 1, characterized in that: A chain wheel (403) is rotatably installed at the top of the top cabin cylinder (401), the chain wheel (403) is coaxially fixed to the surface of the feeding pipe (406), a driving source (405) is also installed at the top cover (15), a chain wheel (404) is fixed to the output end of the driving source (405), and the chain wheel (403) and the chain wheel (404) are connected by a chain.

3. The magnetic flocculation wastewater treatment equipment for environmental protection dredging according to claim 1, characterized in that: The conveying belt is inclined, the inclination angle is 5°-15°, and the conveying direction of the magnetic conveying belt (9) is away from the discharge end.

4. The magnetic flocculation wastewater treatment equipment for environmental protection dredging according to claim 1, characterized in that: The minimum distance between the curved surface of the permanent magnet roller (1002) and the magnetic conveying belt (9) is 0.5cm-2cm; One side of the fixed plate (1001) and one side of the conveying belt frame (8) are rotatably provided with shaft wheels (1003), the two shaft wheels (1003) are connected through a transmission belt (1004), and the conveying belt frame (8) is provided with a fourth driving source (117), and the fourth driving source (117) is used to drive the conveying belt.

5. The magnetic flocculation wastewater treatment equipment for environmental protection dredging according to claim 1, characterized in that: One end of the magnetic conveying belt (9) is also provided with a scraper (1005), the scraper (1005) is attached to the permanent magnet roller (1002), the conveying mechanism (11) comprises a cylinder pipe (111), one end of the cylinder pipe (111) is close to the collecting assembly (10), and the end of the cylinder pipe (111) close to the collecting assembly (10) is provided with an inlet (112), the width of the inlet (112) is at least greater than the width of the scraper (1005), the scraper (1005) is inclined and faces the inlet (112); The inner walls between the two ends of the cylinder pipe (111) are rotatably provided with an auger (113), and one end of the cylinder pipe (111) away from the inlet (112) is provided with a guide pipe (116), the guide pipe (116) is used to connect the inside of the cylinder pipe (111) and the accumulation box (2), one end of the cylinder pipe (111) is provided with a third driving source (114) for providing power for the auger (113), one end of the cylinder pipe (111) away from the third driving source (114) is provided with a filter plate (115), one side of the filter plate (115) away from the cylinder pipe (111) is fixedly provided with a transfer box (12), the liquid filtered through the filter plate (115) enters the transfer box (12), and the outside of the transfer box (12) is provided with a liquid pump (13) for pumping out the liquid in the transfer box (12). A rotary pipe (14) is installed at the output end of the liquid pump (13), and the other end of the rotary pipe (14) is in communication with the inside of the second dosing barrel (5).

6. The magnetic flocculation wastewater treatment equipment for environmental protection dredging according to claim 1, characterized in that: The accumulation box (2) comprises a box body (201), and the bottom of one side of the box body (201) is provided with a discharge pipe (202) with a valve; The magnetic flocculation wastewater treatment device also comprises an integrated base (1), and the accumulation box (2), the collecting assembly (10) and the conveying mechanism (11) are integrally installed on the integrated base (1).

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