Sewage advanced treatment device and method based on magnetic coagulation

Abstract

The invention discloses a sewage advanced treatment device and method based on magnetic coagulation, and relates to the technical field of water pollution control and governance, the sewage advanced treatment device comprises a coagulation tank, stirring mechanisms are equidistantly arranged on the coagulation tank, one side of the coagulation tank is fixedly connected with a pump frame, and a delivery pump is arranged in the pump frame; a sedimentation tank body; a magnetic powder separator; the magnetic powder discharge channel is arranged at a discharge hole formed close to the bottom end of the magnetic powder separator; the high shear is arranged between the magnetic powder separator and the sedimentation tank body; and the plurality of separation tanks are arranged in the sedimentation tank body. According to the advanced sewage treatment device and method based on magnetic coagulation, when solid-liquid separation is carried out in a sedimentation tank body, a hydraulic cylinder IV is adjusted to drive a separation filter plate to move to a solid-liquid junction, and then a hydraulic cylinder I is adjusted to drive a lifting frame to move to the position below a middle frame, so that a lower pressing sheet is in contact with a discharging plate; and the second electric telescopic rod is adjusted to drive the extrusion air bag to move out of the lifting frame.

Description

Technical Field

[0001] The present invention relates to the technical field of water pollution control and treatment, and particularly relates to a sewage advanced treatment device and method based on magnetic coagulation. Background Art

[0002] In water pollution control and treatment, the magnetic coagulation technology is a combination of coagulation technology and magnetic separation technology. It is an innovative improvement based on the traditional coagulation, sedimentation, and filtration processes. By using recyclable modified magnetic powder, the flocculation reaction is enhanced to achieve an efficient sewage treatment process with high-speed sedimentation.

[0003] The treatment process of magnetic coagulation is that sewage enters the magnetic coagulation system, and PAC, magnetic powder, and PAM are sequentially added in the rapid mixing tank, loading tank, and flocculation tank. Mechanical stirring is used for mixing and flocculation to make the magnetic powder in the water combine with non-magnetic suspended solids to form micro-magnetic flocs. The micro-magnetic flocs enter the sedimentation tank with the water flow to complete solid-liquid separation. The sludge containing magnetic powder is transported to a high-shear machine by a magnetic powder lift pump to separate the magnetic powder from the sludge, and then enters a magnetic separator for magnetic powder recovery. The recovered magnetic powder is fed back to the loading tank for recycling.

[0004] During the use of the existing sewage advanced treatment device based on magnetic coagulation, after the stirred sewage is introduced into the sedimentation tank, the sediment after high-speed sedimentation still contains some water bodies. These water bodies cannot be taken away with the extraction of the upper water body, resulting in the inability to extract some of the water bodies doped in the sediment, which will increase water loss and reduce the use value of the treatment device. Summary of the Invention

[0005] The present invention discloses a sewage advanced treatment device based on magnetic coagulation, aiming to solve the technical problem that during the use of the existing sewage advanced treatment device based on magnetic coagulation, after the stirred sewage is introduced into the sedimentation tank, the sediment after high-speed sedimentation still contains some water bodies. These water bodies cannot be taken away with the extraction of the upper water body, resulting in the inability to extract some of the water bodies doped in the sediment, which will increase water loss.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A sewage advanced treatment device based on magnetic coagulation, comprising: A coagulation tank, on which stirring mechanisms are equidistantly arranged. One side of the coagulation tank is fixedly connected with a pump rack, and a delivery pump is arranged inside the pump rack; A sedimentation tank body; A magnetic powder separator; A magnetic powder discharge channel, arranged at the discharge hole opened near the bottom end of the magnetic powder separator; A high-shear machine, arranged between the magnetic powder separator and the sedimentation tank body; Multiple separation pools are arranged inside the sedimentation tank body, and a filling plate is fixedly connected to one side of each separation pool; Two pump plates are arranged on both sides of the sedimentation tank body; An inflow pipe is arranged in the inflow hole opened on the sedimentation tank body. Two through holes are opened on each separation pool. A check valve is connected to the outer side wall of the inflow pipe close to the sedimentation tank body through a flange, and the direction of the check valve is from the inflow pipe to the inside of the sedimentation tank body; A solid-liquid high-efficiency separation mechanism is arranged inside the separation pool. The solid-liquid high-efficiency separation mechanism is used to achieve the high-efficiency separation of the water body and sediment inside the sedimentation tank body, thereby improving the recovery rate of the water body in the sludge and reducing the water body loss; A sediment collection mechanism is arranged inside the sedimentation tank body, and the sediment collection mechanism is located below each separation pool. The sediment collection mechanism is used to achieve the full collection of sediment, thereby avoiding its accumulation in the sedimentation tank body and causing pollution to the sedimentation tank body.

[0007] In a preferred solution, the solid-liquid high-efficiency separation mechanism includes: Two separation filter plates. Lifting grooves are opened on both inner walls of the separation pool. A lifting slider is slidably connected inside each lifting groove, and the separation filter plate is fixedly connected to two lifting sliders on the same side; An intermediate frame is arranged on the opposite side of the two separation filter plates; A lifting frame is inserted into the through hole opened on the intermediate frame; Two lifting frames are arranged at both ends of the top of the intermediate frame. A hydraulic cylinder I is fixedly connected to each of the two lifting frames, and the output end of the hydraulic cylinder I is fixedly connected to the top of the lifting frame.

[0008] In a preferred solution, the solid-liquid high-efficiency separation mechanism further includes: Two extrusion air bags. Installation grooves are opened on both sides of the lifting frame, and a plurality of electric telescopic rods II are fixedly connected at equal distances inside the two installation grooves. The output ends of the plurality of electric telescopic rods II on one side are fixedly connected to the same pushing hard plate, and the extrusion air bag is arranged on the pushing hard plate; A sealing strip is arranged between the extrusion air bag and the lifting frame; A plurality of air pumps are fixedly connected to the top of the lifting frame at equal distances; A plurality of communication pipes are arranged in the communication holes opened on the opposite sides of the two extrusion air bags. The air delivery end of the air pump is fixedly connected to a guide air pipe, and one end of the guide air pipe is inserted into the inside of the corresponding communication pipe; A pressing sheet is arranged at the bottom of the lifting frame.

[0009] In a preferred embodiment, adjusting pieces are hinged to the inner walls at the upper and lower ends of the pushing hard board in the installation grooves, and electric telescopic rods I are hinged to the installation grooves near each adjusting piece. The output ends of the electric telescopic rods I are hinged to one side of the adjusting pieces, and irregular extrusion rods are fixedly connected at equal intervals on the side of the adjusting pieces facing the extrusion air bag.

[0010] In a preferred embodiment, the precipitation collection mechanism includes: A deflection shaft, the two ends of which are connected to the shaft grooves opened on the inner side walls of the sedimentation tank body through bearings; A blanking plate, arranged on the outer side wall of the deflection shaft; Multiple hydraulic cylinders II, which are hinged to the bottom inner wall of the sedimentation tank body at equal intervals, and the output ends of the hydraulic cylinders II are hinged to the bottom of the blanking plate.

[0011] In a preferred embodiment, the precipitation collection mechanism further includes: Multiple bottom frames, arranged at equal intervals at the bottom of the blanking plate, and fitting holes are opened above each bottom frame on the blanking plate; A turning plate, which is hinge-connected to the inner wall of one side of the fitting hole; Multiple deflection spring rods, arranged at the bottom of the turning plate, and the bottoms of the multiple deflection spring rods are fixedly connected to the same integrated rod, and the integrated rod is fixedly connected to the arc surface of the bottom frame.

[0012] In a preferred embodiment, hydraulic cylinders III are fixedly connected to the bottom frame at equal intervals, and the output ends of the multiple hydraulic cylinders III are fixedly connected to the same mounting rod. The top of the mounting rod is fixedly connected to a blower pipe, and air blowing holes are opened on the blower pipe facing obliquely downward. A matching pressing plate is fixedly connected to the arc surface of the blower pipe facing upward. An air compressor is fixedly connected to the frame, and the air output end of the air compressor is fixedly connected to an air delivery pipe, and one end of the air delivery pipe is inserted into the interior of the blower pipe.

[0013] In a preferred embodiment, two protective partitions are symmetrically distributed on the bottom inner wall of the sedimentation tank body, and a sediment discharge hole is opened between the two protective partitions in the sedimentation tank body. The sediment discharge hole is located between the two blanking plates. Mounting blocks are fixedly connected above each lifting groove in the separation tank, and hydraulic cylinders IV are fixedly connected to the bottoms of the mounting blocks. The output ends of the hydraulic cylinders IV are fixedly connected to the tops of the corresponding lifting sliders, and a dredging thin rod is fixedly connected to the bottom of each lifting slider.

[0014] In a preferred embodiment, water pumps are fixedly connected to the tops of the two pump plates at equal distances, and a pipe rack is fixedly connected to each lifting frame. A main pipe is fixedly connected to the pipe rack. Two symmetrically distributed sub-holes are formed in the downward-facing part of the main pipe. Water extraction nozzles are fixedly connected to the interiors of the two sub-holes. The water extraction nozzles are located above the separation filter plate. The water extraction end of the water pump is fixedly connected to a water extraction pipe, and one end of the water extraction pipe is inserted into the interior of the main pipe.

[0015] A method for advanced treatment of sewage based on magnetic coagulation, using an advanced sewage treatment device based on magnetic coagulation as described above, includes the following steps; Step 1: Add PAC, magnetic powder, and PAM to the coagulation tank in sequence, and use a stirring mechanism to stir and mix and flocculate, so that the magnetic powder in the water combines with non-magnetic suspended solids to form micro-magnetic flocs. The mixture of micro-magnetic flocs and water body is introduced into the sedimentation tank body through a transfer pump, and it flows through the through holes to each partition tank and starts to settle statically. Step 2: After the sedimentation is completed, start the water pump. The water pump starts to extract the water body above the separation filter plate through the water extraction nozzle. After the extraction of the upper water body is completed, adjust the hydraulic cylinder four to drive the separation filter plate to move to the solid-liquid junction, and then adjust the hydraulic cylinder one to drive the lifting frame to move below the middle frame, so that the pressing piece contacts the blanking plate. Then adjust the electric telescopic rod two to drive the extrusion airbag to move out of the lifting frame, and the air pump fills the interior of the extrusion airbag with gas. As the extrusion airbag continues to expand, the pushing and squeezing force exerted by the extrusion airbag on the sediment becomes greater and greater, and the water body contained in the sediment is continuously squeezed to the upper layer of the sediment, and continue to extract it. Step 3: After the extraction of the upper water body is completed, adjust the hydraulic cylinder two to drive the blanking plate to deflect downward, then the blanking plate gradually disengages from the bottom of each partition tank, and the sediment below the partition tank gradually falls along the inclined blanking plate to complete the first-stage blanking. After the first-stage blanking is completed, from top to bottom, adjust the hydraulic cylinder three at equal time intervals to drive the matching pressing plate to rise, then the turning plate deflects upward under the action of the deflection spring rod and gradually lifts from above the blanking plate, further accelerating the sliding of the sediment above the blanking plate. At the same time, start the air compressor, and the air compressor introduces compressed gas into the air duct and sprays it out through the inclined downward air holes, so as to blow the sediment on the turning plate and the blanking plate below it to complete the second-stage blanking. The sediment all falls below the sedimentation tank body, and the sludge is transported to a high-shear machine for shearing. After the shearing is completed, it is introduced into a magnetic powder separator. The magnetic powder separator stirs the sludge at a high speed to separate the magnetic powder from the sludge. The separated magnetic powder is discharged from the magnetic powder discharge channel, and the sludge is discharged from the sludge outlet at the bottom of the magnetic powder separator to end the operation.

[0016] As can be seen from the above, when the solid-liquid separation inside the sedimentation tank body of the sewage advanced treatment device provided by the present invention is carried out, the adjusting hydraulic cylinder four drives the separation filter plate to move to the solid-liquid junction, and then the adjusting hydraulic cylinder one drives the lifting frame to move below the middle frame, so that the pressing piece contacts the blanking plate. Then, the adjusting electric telescopic rod two drives the extrusion air bag to move out of the lifting frame, and the air pump fills the inside of the extrusion air bag with gas. As the extrusion air bag continuously expands, the pushing and squeezing force exerted by the extrusion air bag on the sediment becomes greater and greater, and the water contained in the sediment is continuously squeezed to the upper layer of the sediment, reducing the water content in the sediment and improving the recovery rate of the water body. Description of the Drawings

[0017] Figure 1 It is the overall flow chart of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0018] Figure 2 It is the schematic structural diagram of the sedimentation tank body of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0019] Figure 3 It is the flipped diagram of the internal structure of the sedimentation tank body of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0020] Figure 4 It is the enlarged view of the structure of the separation tank of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0021] Figure 5 It is the schematic diagram of the internal structure of the separation tank of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0022] Figure 6 It is the schematic diagram of the solid-liquid efficient separation mechanism of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0023] Figure 7 It is the cross-sectional view of the structure of the middle frame and the lifting frame of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0024] Figure 8 For Figure 6 The schematic plan view.

[0025] Figure 9 It is the schematic diagram of the sediment collection mechanism of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0026] Figure 10 It is the cross-sectional view of the structure of the bottom frame, the air duct, the flipping plate and the matching pressing plate of a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0027] Figure 11 The split view of the cooperating pressing plate and the air duct structure for a sewage advanced treatment device based on magnetic coagulation proposed by the present invention.

[0028] Figure 12 is Figure 10 the schematic plan view of.

[0029] In the figure: 1. The sedimentation tank body; 2. The solid-liquid high-efficiency separation mechanism; 201. The separation filter plate; 202. The lifting frame; 203. The lifting frame; 204. The first hydraulic cylinder; 205. The extrusion airbag; 206. The air pump; 207. The pressing sheet; 208. The intermediate frame; 209. The sealing strip; 210. The adjusting sheet; 211. The installation groove; 212. The air guide pipe; 213. The first electric telescopic rod; 214. The connecting pipe; 215. The second electric telescopic rod; 216. The irregular extrusion rod; 217. The pushing hard plate; 3. The partition tank; 4. The water suction pipe; 5. The main pipe; 6. The converging pipe; 7. The check valve; 8. The water pump; 9. The sediment discharge hole; 10. The pump plate; 11. The sediment collection mechanism; 1101. The blanking plate; 1102. The deflection shaft; 1103. The bottom frame; 1104. The second hydraulic cylinder; 1105. The air duct; 1106. The turning plate; 1107. The installation rod; 1108. The third hydraulic cylinder; 1109. The air compressor; 1110. The cooperating pressing plate; 1111. The air blowing hole; 1112. The deflection spring rod; 1113. The air delivery pipe; 1114. The integrating rod; 12. The filling plate; 13. The protective partition; 14. The lifting groove; 15. The fourth hydraulic cylinder; 16. The installation block; 17. The through hole; 18. The dredging thin rod; 19. The water suction nozzle; 20. The lifting slider; 21. The pipe rack; 22. The coagulation tank; 23. The stirring mechanism; 24. The pump rack; 25. The delivery pump; 26. The magnetic powder separator; 27. The high shear machine; 28. The magnetic powder discharge channel. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0031] A sewage advanced treatment device based on magnetic coagulation disclosed by the present invention is mainly applied to the scenario where in the existing sewage advanced treatment device based on magnetic coagulation during use, after the stirred sewage is introduced into the sedimentation tank, there is still part of the water body in the sediment after high-speed sedimentation, and this part of the water body cannot be taken away with the extraction of the upper water body, resulting in the situation that part of the water body doped in the sediment cannot be extracted, which will increase the water body loss.

[0032] Referring to Figures 1 - 12 , a sewage advanced treatment device based on magnetic coagulation includes: The coagulation tank 22 is equidistantly provided with stirring mechanisms 23 on it. One side of the coagulation tank 22 is fixedly connected with a pump rack 24, and a transfer pump 25 is arranged inside the pump rack 24; The sedimentation tank body 1; The magnetic powder separator 26; The magnetic powder discharge channel 28 is arranged at the discharge hole opened near the bottom end of the magnetic powder separator 26; The high-shear machine 27 is arranged between the magnetic powder separator 26 and the sedimentation tank body 1; A plurality of partition tanks 3 are arranged inside the sedimentation tank body 1, and a filling plate 12 is fixedly connected to one side of each partition tank 3; Specifically, here the partition tank 3 is used to divide the water body and sediment inside the sedimentation tank body 1 into regions, so as to avoid the situation that the water body inside the sediment body flows rapidly during solid-liquid separation, resulting in the sediment turning up.

[0033] Two pump plates 10 are arranged on both sides of the sedimentation tank body 1; The inlet pipe 6 is arranged in the inlet hole opened on the sedimentation tank body 1. Two through holes 17 are opened on each partition tank 3. The inlet pipe 6 is connected to the outer side wall of the sedimentation tank body 1 near the inlet pipe 6 through a flange with a one-way valve 7, and the direction of the one-way valve 7 is from the inlet pipe 6 to the inside of the sedimentation tank body 1; The solid-liquid efficient separation mechanism 2 is arranged inside the partition tank 3. The solid-liquid efficient separation mechanism 2 is used to realize the efficient separation of the water body and sediment inside the sedimentation tank body 1, so as to improve the recovery rate of the water body in the sludge and reduce the water body loss; The sediment collection mechanism 11 is arranged inside the sedimentation tank body 1, and the sediment collection mechanism 11 is located below each partition tank 3. The sediment collection mechanism 11 is used to realize the full collection of the sediment, so as to avoid its accumulation in the sedimentation tank body 1 and cause pollution to the sedimentation tank body 1.

[0034] Refer to Figures 2 - 8 , in a preferred embodiment, the solid-liquid efficient separation mechanism 2 includes: Two separation filter plates 201. Lifting grooves 14 are opened on both inner walls of the partition tank 3. A lifting slider 20 is slidably connected inside each lifting groove 14, and the separation filter plate 201 is fixedly connected to the two lifting sliders 20 on the same side; The middle frame 208 is arranged on the opposite side of the two separation filter plates 201; The lifting frame 203 is inserted into the through hole opened on the middle frame 208; Two lifting frames 202 are arranged at both ends of the top of the middle frame 208. Hydraulic cylinders 204 are fixedly connected to both lifting frames 202, and the output end of the hydraulic cylinder 204 is fixedly connected to the top of the lifting frame 203.

[0035] In a specific application scenario, when performing solid-liquid separation inside the sedimentation tank body 1, the hydraulic cylinder four 15 is adjusted to drive the separation filter plate 201 to move to the solid-liquid junction. Then, the hydraulic cylinder one 204 is adjusted to drive the lifting frame 203 to move below the middle frame 208, so that the pressing piece 207 contacts the blanking plate 1101. Then, the electric telescopic rod two 215 is adjusted to drive the extrusion airbag 205 to move out of the lifting frame 203, and the air pump 206 fills the inside of the extrusion airbag 205 with gas. As the extrusion airbag 205 continues to expand, the pushing and squeezing force exerted by the extrusion airbag 205 on the sediment becomes greater and greater. The water contained in the sediment is continuously squeezed to the upper layer of the sediment, reducing the water content in the sediment and increasing the recovery rate of the water body.

[0036] Specifically, in the separation tank 3, an enclosed space is formed by two separation filter plates 201, a lifting frame 203, a middle frame 208, and two extrusion airbags 205. The continuous compression of the extrusion airbags 205 causes this space to gradually decrease, thereby gradually increasing the mutual pressure between the sediments, quickly squeezing out the water contained in the sediments, and further increasing the recovery rate of the water body.

[0037] It should be noted that during the gradual expansion of the extrusion airbag 205, the electric telescopic rod one 213 at the upper and lower ends is reciprocally adjusted to drive the irregular extrusion rod 216 on the adjusting piece 210 to squeeze the rear of the extrusion airbag 205, so that the gas inside the extrusion airbag 205 moves towards the contact with the sediment. The contact between the extrusion airbag 205 and the sediment is subjected to enhanced pressures at different positions, thereby realizing secondary extrusion of the sediment, and this extrusion method is local extrusion, further increasing the drainage rate of the water contained in the sediment.

[0038] Refer to Figures 6 - 8 , in a preferred embodiment, the solid-liquid high-efficiency separation mechanism 2 further includes: Two extrusion airbags 205. Installation grooves 211 are opened on both sides of the lifting frame 203, and electric telescopic rods two 215 are equally spaced and fixedly connected inside the two installation grooves 211. The output ends of the multiple electric telescopic rods two 215 on one side are fixedly connected to the same pushing hard plate 217, and the extrusion airbag 205 is arranged on the pushing hard plate 217; A sealing strip 209, arranged between the extrusion airbag 205 and the lifting frame 203; Multiple air pumps 206, equally spaced and fixedly connected to the top of the lifting frame 203; Multiple connecting pipes 214, arranged in the communication holes 17 opened on the opposite sides of the two extrusion airbags 205. The air delivery end of the air pump 206 is fixedly connected to an air guide pipe 212, and one end of the air guide pipe 212 is inserted into the inside of the corresponding connecting pipe 214; A pressing piece 207, arranged at the bottom of the lifting frame 203.

[0039] In a further aspect of the present invention, adjusting pieces 210 are connected to the inner walls at the upper and lower ends of the pushing hard board 217 through hinges, and electric telescopic rods 213 are connected to the inner walls near each adjusting piece 210 through hinges. The output ends of the electric telescopic rods 213 are connected to one side of the adjusting pieces 210 through hinges. Irregular pressing rods 216 are fixedly connected at equal intervals on the side of the adjusting pieces 210 facing the extrusion airbag 205.

[0040] Refer to Figure 2 、 Figure 3 、 Figures 9 - 12 , in a preferred embodiment, the precipitation collection mechanism 11 includes: A deflection shaft 1102, and both ends of the deflection shaft 1102 are connected to shaft grooves formed on the inner side walls of the sedimentation tank body 1 through bearings; A blanking plate 1101, which is arranged on the outer side wall of the deflection shaft 1102; A plurality of hydraulic cylinders II 1104 are connected to the bottom inner wall of the sedimentation tank body 1 at equal intervals through hinges, and the output ends of the hydraulic cylinders II 1104 are connected to the bottom of the blanking plate 1101 through hinges.

[0041] Refer to Figures 8 - 11 , in a preferred embodiment, the precipitation collection mechanism 11 further includes: A plurality of chassis 1103 are arranged at equal intervals at the bottom of the blanking plate 1101, and fitting holes are formed above each chassis 1103 on the blanking plate 1101; A turning plate 1106 is connected to the inner wall of one side of the fitting hole through a hinge; A plurality of deflection spring rods 1112 are arranged at the bottom of the turning plate 1106, and the bottoms of the plurality of deflection spring rods 1112 are fixedly connected to the same integrated rod 1114, and the integrated rod 1114 is fixedly connected to the arc surface of the chassis 1103.

[0042] In a further aspect of the present invention, hydraulic cylinders III 1108 are fixedly connected to the chassis 1103 at equal intervals, and the output ends of the plurality of hydraulic cylinders III 1108 are fixedly connected to the same mounting rod 1107. A blower pipe 1105 is fixedly connected to the top of the mounting rod 1107. Blowing holes 1111 are formed in the blower pipe 1105 facing obliquely downward. A matching pressing plate 1110 is fixedly connected to the arc surface of the blower pipe 1105 facing upward. An air compressor 1109 is fixedly connected to the frame, and an air delivery end of the air compressor 1109 is fixedly connected to an air delivery pipe 1113. One end of the air delivery pipe 1113 is inserted into the interior of the blower pipe 1105.

[0043] Specifically, after the water body above the sedimentation tank body 1 is pumped out, the adjusting hydraulic cylinder II 1104 drives the blanking plate 1101 to deflect downward, and the blanking plate 1101 gradually disengages from the bottom of each separation tank 3. The sediment below the separation tank 3 gradually falls along the inclined blanking plate 1101 to complete the first-stage blanking.

[0044] It should be noted that after blanking for a period of time, at equal time intervals from top to bottom, the adjusting hydraulic cylinder III 1108 drives the matching pressing plate 1110 to rise. Then, the turning plate 1106 deflects upward under the action of the deflection spring rod 1112 and gradually jacks up from above the blanking plate 1101, further accelerating the sliding of the sediment above the blanking plate 1101. At the same time, the air compressor 1109 is started, and the air compressor 1109 introduces compressed gas into the air duct 1105 and sprays it out through the obliquely downward air holes 1111, so as to blow the sediment on the turning plate 1106 and the blanking plate 1101 below it to complete the second-stage blanking. The second-stage blanking is from top to bottom, improving the thoroughness of the discharge of the sediment on the blanking plate 1101 and avoiding the loss of magnetic powder and the pollution of the sedimentation tank body 1 caused by the accumulation of sediment.

[0045] Refer to Figure 2 and Figure 3 In a further solution of the present invention, two protective partitions 13 are symmetrically distributed on the bottom inner wall of the sedimentation tank body 1, and a sediment discharge hole 9 is opened at the position between the two protective partitions 13 of the sedimentation tank body 1. The sediment discharge hole 9 is located between the two blanking plates 1101. An installation block 16 is fixedly connected above each lifting groove 14 of the separation tank 3. A hydraulic cylinder IV 15 is fixedly connected to the bottom of the installation block 16, and the output end of the hydraulic cylinder IV 15 is fixedly connected to the top of the corresponding lifting slider 20. A dredging thin rod 18 is fixedly connected to the bottom of each lifting slider 20.

[0046] Specifically, the dredging thin rod 18 is used to disperse the sediment in the lifting groove 14 during the lifting and lowering of the lifting slider 20, avoiding the accumulation of sediment causing the lifting slider 20 to be unable to lift and lower smoothly.

[0047] Refer to Figure 2 、 Figure 3 and Figure 5 In a further solution of the present invention, water pumps 8 are fixedly connected to the tops of the two pump plates 10 at equal distances, and a pipe rack 21 is fixedly connected to each lifting frame 202. A main pipe 5 is fixedly connected to the pipe rack 21. Two symmetrically distributed branch holes are opened on the main pipe 5 facing downward. A water extraction nozzle 19 is fixedly connected to the inside of each branch hole. The water extraction nozzle 19 is located above the separation filter plate 201. The water extraction end of the water pump 8 is fixedly connected to a water extraction pipe 4, and one end of the water extraction pipe 4 is inserted into the inside of the main pipe 5.

[0048] A method for advanced treatment of sewage based on magnetic coagulation, using an advanced sewage treatment device based on magnetic coagulation as described above, includes the following steps; Step 1: Add PAC, magnetic powder, and PAM into the coagulation tank in sequence, and use the stirring mechanism 23 to stir, mix, and flocculate, so that the magnetic powder in the water combines with non-magnetic suspended solids to form micro-magnetic flocs. The mixture of micro-magnetic flocs and water body is introduced into the sedimentation tank body 1 through the delivery pump 25, and it flows through the through holes 17 to each partition tank 3 and starts to settle statically; Step 2: After the sedimentation is completed, start the water extraction pump 8. The water extraction pump 8 starts to extract the water body above the separation filter plate 201 through the water extraction nozzle 19. After the extraction of the upper water body is completed, adjust the hydraulic cylinder four 15 to drive the separation filter plate 201 to move to the solid-liquid interface, and then adjust the hydraulic cylinder one 204 to drive the lifting frame 203 to move below the middle frame 208, so that the pressing plate 207 contacts the blanking plate 1101. Then adjust the electric telescopic rod two 215 to drive the extrusion airbag 205 to move out of the lifting frame 203, and the air pump 206 fills the inside of the extrusion airbag 205 with gas. As the extrusion airbag 205 expands continuously, the pushing and squeezing force exerted by the extrusion airbag 205 on the sediment becomes greater and greater, and the water body contained in the sediment is continuously squeezed to the upper layer of the sediment, and continue to extract it; Step 3: After the extraction of the upper water body is completed, adjust the hydraulic cylinder two 1104 to drive the blanking plate 1101 to deflect downward, then the blanking plate 1101 gradually separates from the bottom of each partition tank 3, and the sediment below the partition tank 3 gradually falls along the inclined blanking plate 1101 to complete the first-stage blanking. After the first-stage blanking is completed, from top to bottom, adjust the hydraulic cylinder three 1108 to drive the matching pressing plate 1110 to rise at equal time intervals, then the turning plate 1106 deflects upward under the action of the deflection spring rod 1112 and starts to gradually lift from above the blanking plate 1101, further accelerating the sliding of the sediment above the blanking plate 1101. At the same time, start the air compressor 1109. The air compressor 1109 introduces compressed gas into the air duct 1105 and sprays it out through the inclined downward air holes 1111, so as to blow the sediment on the turning plate 1106 and the blanking plate 1101 below it to complete the second-stage blanking. All the sediment falls below the sedimentation tank body 1, and the sludge is transported to the high-shear machine 27 for shearing. After the shearing is completed, it is introduced into the magnetic powder separator 26. The magnetic powder separator 26 stirs the sludge at high speed to separate the magnetic powder from the sludge. The separated magnetic powder is discharged from the magnetic powder discharge channel 28, and the sludge is discharged from the sludge outlet at the bottom of the magnetic powder separator 26 to end the operation.

[0049] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A deep sewage treatment device based on magnetic coagulation, characterized in that Including: A coagulation tank, on which stirring mechanisms are equidistantly arranged. One side of the coagulation tank is fixedly connected with a pump frame, and a transfer pump is arranged inside the pump frame; A sedimentation tank body; A magnetic powder separator; A magnetic powder discharge channel, arranged at the discharge hole opened near the bottom end of the magnetic powder separator; A high-shear machine, arranged between the magnetic powder separator and the sedimentation tank body; Multiple partition tanks, arranged inside the sedimentation tank body. One side of each partition tank is fixedly connected with a filling plate; Two pump plates, arranged on both sides of the sedimentation tank body; A converging pipe, arranged in the converging hole opened on the sedimentation tank body. Two through holes are opened on each partition tank. The outer side wall of the converging pipe close to the sedimentation tank body is connected with a check valve through a flange, and the direction of the check valve is from the converging pipe to the inside of the sedimentation tank body; A solid-liquid high-efficiency separation mechanism, arranged inside the partition tank. The solid-liquid high-efficiency separation mechanism is used to achieve efficient separation of the water body and sediment inside the sedimentation tank body; A sediment collection mechanism, arranged inside the sedimentation tank body, and the sediment collection mechanism is located below each partition tank. The sediment collection mechanism is used to achieve full collection of the sediment.

2. The deep sewage treatment device based on magnetic coagulation according to claim 1, wherein, The solid-liquid high-efficiency separation mechanism includes: Two separation filter plates. Lifting grooves are opened on both inner side walls of the partition tank. A lifting slider is slidably connected inside each lifting groove, and the separation filter plate is fixedly connected to the two lifting sliders on the same side; An intermediate frame, arranged on the opposite side of the two separation filter plates; A lifting frame, inserted into the through hole opened on the intermediate frame; Two lifting frames, arranged at both ends of the top of the intermediate frame. Hydraulic cylinders I are fixedly connected to both of the two lifting frames, and the output end of the hydraulic cylinder I is fixedly connected to the top of the lifting frame.

3. A deep sewage treatment device based on magnetic coagulation according to claim 2, characterized in that, The solid-liquid high-efficiency separation mechanism further includes: Two extrusion air bags. Installation grooves are opened on both sides of the lifting frame, and electric telescopic rods II are equidistantly and fixedly connected inside the two installation grooves. The output ends of the multiple electric telescopic rods II on one side are fixedly connected to the same pushing hard plate, and the extrusion air bag is arranged on the pushing hard plate; A sealing belt, arranged between the extrusion air bag and the lifting frame; Multiple air pumps, equidistantly and fixedly connected to the top of the lifting frame; Multiple connecting pipes, arranged in the communication holes opened on the opposite side of the two extrusion air bags. The air delivery end of the air pump is fixedly connected with a guide air pipe, and one end of the guide air pipe is inserted into the inside of the corresponding connecting pipe; A pressing sheet, arranged at the bottom of the lifting frame.

4. The advanced wastewater treatment device based on magnetic coagulation according to claim 3, characterized in that Adjusting sheets are hinged to the inner walls of the installation grooves at the upper and lower ends of the pushing hard plate, and electric telescopic rods I are hinged to the installation grooves near each adjusting sheet. The output end of the electric telescopic rod I is hinged to one side of the adjusting sheet, and irregular extrusion rods are equidistantly and fixedly connected to the side of the adjusting sheet facing the extrusion air bag.

5. A deep sewage treatment device based on magnetic coagulation according to claim 4, characterized in that, The sediment collection mechanism includes: A deflection shaft, and both ends of the deflection shaft are connected to the shaft grooves opened on the inner side wall of the sedimentation tank body through bearings; A blanking plate, arranged on the outer side wall of the deflection shaft; Multiple hydraulic cylinders II, equidistantly connected to the bottom inner wall of the sedimentation tank body through hinges, and the output end of the hydraulic cylinder II is connected to the bottom of the blanking plate through a hinge.

6. The deep sewage treatment device based on magnetic coagulation according to claim 5, characterized in that, The sediment collection mechanism further includes: Multiple chassis are equidistantly arranged at the bottom of the blanking plate, and fitting holes are opened at the positions above each chassis on the blanking plate; A turning plate is hinge-connected to the inner wall of one side of the fitting hole; Multiple deflection spring rods are arranged at the bottom of the turning plate. The bottoms of the multiple deflection spring rods are fixedly connected to the same integration rod, and the integration rod is fixedly connected to the arc surface of the chassis.

7. A deep sewage treatment device based on magnetic coagulation according to claim 6, characterized in that, Hydraulic cylinders III are fixedly connected to the chassis at equal intervals, and the output ends of the multiple hydraulic cylinders III are fixedly connected to the same mounting rod. The top of the mounting rod is fixedly connected to a blower pipe. Blowing holes are opened in the blower pipe facing obliquely downward. A matching pressing plate is fixedly connected to the arc surface of the blower pipe facing upward. An air compressor is fixedly connected to the frame. The air delivery end of the air compressor is fixedly connected to an air delivery pipe, and one end of the air delivery pipe is inserted into the interior of the blower pipe.

8. The advanced wastewater treatment device based on magnetic coagulation according to claim 7, characterized in that, Two protective partitions are symmetrically distributed on the bottom inner wall of the sedimentation tank body. A sediment discharge hole is opened in the sedimentation tank body between the two protective partitions. The sediment discharge hole is located between the two blanking plates. Mounting blocks are fixedly connected to the positions above each lifting groove of the separation tank. The bottom of the mounting block is fixedly connected to a hydraulic cylinder IV, and the output end of the hydraulic cylinder IV is fixedly connected to the top of the corresponding lifting slider. A dredging thin rod is fixedly connected to the bottom of each lifting slider.

9. The deep sewage treatment device based on magnetic coagulation according to claim 8, wherein Water pumps are fixedly connected to the tops of the two pump plates at equal intervals. A pipe rack is fixedly connected to each lifting frame. A main pipe is fixedly connected to the pipe rack. Two symmetrically distributed branch holes are opened in the main pipe facing downward. Water extraction nozzles are fixedly connected to the interiors of the two branch holes. The water extraction nozzles are located above the separation filter plate. The water extraction end of the water pump is fixedly connected to a water extraction pipe, and one end of the water extraction pipe is inserted into the interior of the main pipe.

10. A method for advanced treatment of sewage based on magnetic coagulation, using an advanced sewage treatment device based on magnetic coagulation as described in claim 9, characterized in that, Including the following steps: Step 1: Add PAC, magnetic powder, and PAM to the coagulation tank in sequence, and use a stirring mechanism to stir, mix, and flocculate, so that the magnetic powder in the water combines with non-magnetic suspended substances to form micro-magnetic flocs. The mixture of micro-magnetic flocs and water body is introduced into the sedimentation tank body through a delivery pump, and it flows through the through holes to each separation tank and starts to settle statically; Step 2: After the sedimentation is completed, start the water pump. The water pump starts to extract the water body above the separation filter plate through the water extraction nozzle. After the extraction of the upper water body is completed, adjust the hydraulic cylinder IV to drive the separation filter plate to move to the solid-liquid interface, and then adjust the hydraulic cylinder I to drive the lifting frame to move below the middle frame, so that the pressing piece contacts the blanking plate. Then adjust the electric telescopic rod II to drive the extrusion air bag to move out of the lifting frame, and the air pump fills the interior of the extrusion air bag with gas. As the extrusion air bag continuously expands, the pushing and squeezing force exerted by the extrusion air bag on the sediment becomes greater and greater, and the water body contained in the sediment is continuously squeezed to the upper layer of the sediment, and continue to extract it; Step 3: After the water body in the upper layer is drained, adjust the second hydraulic cylinder to drive the blanking plate to deflect downward, then the blanking plate gradually separates from the bottom of each separation tank, and the sediment below the separation tank gradually falls along the inclined blanking plate to complete the first-stage blanking. After the first-stage blanking is completed, from top to bottom, adjust the third hydraulic cylinder at equal time intervals to drive the matching pressing plate to rise, then the turning plate deflects upward under the action of the deflection spring rod and gradually jacks up from above the blanking plate, further accelerating the sliding of the sediment above the blanking plate. At the same time, start the air compressor, and the air compressor introduces compressed air into the air duct and sprays it out through the inclined downward air holes, so as to blow the sediment on the turning plate and the blanking plate below it to complete the second-stage blanking. The sediment all falls below the sedimentation tank body, and the sludge is transported to the high-shear machine for shearing. After shearing, it is introduced into the magnetic powder separator. The magnetic powder separator stirs the sludge at high speed to realize the separation of magnetic powder and sludge. The separated magnetic powder is discharged from the magnetic powder discharge channel, and the sludge is discharged from the sludge outlet at the bottom of the magnetic powder separator to end the operation.

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