Sewage treatment super magnetic separation device

Abstract

The present invention discloses a super magnetic separation device for sewage treatment, wherein a magnetic powder dispenser is provided on a coagulation reaction tank, the magnetic powder dispenser adds micro magnetic flocs into the coagulation reaction tank, an agitator is provided in the coagulation reaction tank, in the super magnetic separation tank, a glass sleeve is provided on the magnetic disk outer cover of the super magnetic drum, a brush is tangent to the outer cylindrical surface of the glass sleeve; the material brushed out by the brush enters the V-shaped groove, and the auxiliary unloading jet nozzle flushes the material to the bottom of the V-shaped groove; in the magnetic seed recovery groove, the radiation magnetic core of the magnetic turntable is arranged on the magnetic drum of the axis at a radiation angle to form an intermittent magnetic field, a glass isolation sleeve is provided on the outer side of the radiation magnetic core, a scraper is close to the outer cylindrical surface of the isolation sleeve, and the magnetic seeds scraped off by the scraper are configured by a magnetic seed dispenser and then flow back into the coagulation reaction tank. Through the technical scheme of the present invention, the magnetic seeds can be completely and quickly stripped off, and cleaner magnetic powder can be recovered for recycling.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, and in particular to a supermagnetic separation device for sewage treatment. Background Art

[0002] The super magnetic separation system can be used for upgrading and expanding sewage treatment plants, treating industrial wastewater, and treating black and odorous water bodies. Magnetic separation can quickly complete solid-liquid separation, quickly remove suspended matter, reduce turbidity, remove phosphorus, reduce COD, and purify water bodies. The super magnetic separation water treatment system uses magnetic loading flocculation to make the flocs magnetic, and then uses magnetic fishing for separation. The separation process of this technology only takes 30 seconds, and the floor space is only 1 / 8 of that of traditional flocculation sedimentation. It has the characteristics of large processing capacity, quick effect, low energy consumption, and relatively low operating costs. It is superior to traditional flocculation sedimentation processes, and has significant advantages as an integrated equipment integrated application.

[0003] At present, the magnetic recovery system of the super magnetic separation system consists of an integral magnetic drum turntable and a recovery tank. A rotating brush is provided between the magnetic drum turntable and the recovery tank. The magnetic drum turntable is an integral cylindrical shape. During the rotation of the magnetic drum, the magnetic mud flocs are taken out together. The rotating brush between the magnetic drum and the recovery tank hangs the magnetic mud flocs out and enters the magnetic seed recovery equipment for violent stirring to separate the magnetic seeds from the sludge. In these two processes of magnetic flocculation separation and magnetic seed recovery, the magnetic powder is recycled and reused. However, due to the strong magnetic force of the magnetic drum turntable during the two processes, the rotating brush often cannot completely peel the magnetic seeds off the magnetic drum, resulting in waste of magnetic seeds, decreased magnetic force loss of the magnetic drum, and high energy consumption of the equipment, thus affecting the work efficiency of the next cycle. Summary of the invention

[0004] In response to at least one of the above problems, the present invention provides a super magnetic separation device for sewage treatment, in which sewage is treated in a coagulation reaction tank and then enters a super magnetic separation tank, and then is precipitated and separated from the sewage by a super magnetic separation device. The magnetic flocs separated by the super magnetic separation device enter a magnetic seed recovery system to remove sludge and recover the magnetic seeds at the same time. The recovered magnetic seeds are put into a coagulation reaction tank for recycling. By optimizing the structure of the super magnetic drum in the super magnetic separation tank and the magnetic turntable in the magnetic seed recovery tank, the magnetic seeds can be completely and quickly peeled off, and cleaner magnetic powder can be recovered.

[0005] To achieve the above-mentioned purpose, the present invention provides a super magnetic separation device for sewage treatment, comprising: a coagulation reaction tank, a super magnetic separation tank and a magnetic seed recovery tank; a magnetic powder dispenser is arranged on the coagulation reaction tank, and the magnetic powder dispenser adds micro magnetic flocs into the coagulation reaction tank; an agitator is arranged in the coagulation reaction tank, and sewage is introduced into the coagulation reaction tank through a water inlet pipe by a water pump, and is led out to the super magnetic separation tank through a guide pipe; the super magnetic separation tank comprises a super magnetic drum, a brush, an auxiliary unloading system and a separation tank, and the super magnetic drum comprises a main shaft, a magnetic disk and a glass sleeve, the main shaft of the super magnetic drum is arranged parallel to the notch edge of the separation tank and is driven to rotate by a motor, the cylindrical glass sleeve is sleeved on the outer side of the magnetic disk, the magnetic disk and the glass sleeve are fixed and sealed, and the brush is arranged at the notch edge of the separation tank and is in tangential contact with the outer cylindrical surface of the glass sleeve; The unloading assistance system includes a V-shaped groove, an unloading assistance jet nozzle and a recovery pump. The material brushed out by the brush enters the V-shaped groove. The unloading assistance jet nozzle flushes the material to the bottom of the V-shaped groove. The bottom of the V-shaped groove is led out to the entrance of the magnetic seed recovery groove through the unloading assistance conduit through the recovery pump; the magnetic seed recovery groove includes a high-power agitator, a magnetic turntable, a magnetic seed mixer, a scraper and a sludge treatment system. The high-power agitator is installed at the entrance of the magnetic seed recovery groove. The magnetic turntable includes a magnetic drum, a radiating magnetic core and an isolation sleeve. The radiating magnetic core is arranged on the magnetic drum of the axis at a radiating angle to form an intermittent magnetic field. The outer side of the radiating magnetic core is provided with a glass isolation sleeve. The magnetic turntable is driven to rotate by a motor. The scraper is close to the outer cylindrical surface of the isolation sleeve. The magnetic seeds scraped off by the scraper are configured by the magnetic seed mixer and then returned to the coagulation reaction tank by the magnetic seed reflux pipe.

[0006] In the above technical scheme, preferably, the coagulation reaction tank includes a pH adjustment zone, a coagulant reaction zone, a magnetic seed delivery zone and a coagulation reaction zone arranged in sequence from the inlet to the outlet, and the zones are semi-isolated so that the sewage is diverted from the previous zone to the next zone in sequence. Each zone is provided with the agitator, the magnetic powder dispenser is arranged in the magnetic seed delivery zone, the pH adjustment zone is used to adjust the pH value of the sewage, the coagulant reaction zone is used to add PAC (poly aluminum chloride), and the coagulation reaction tank is used to add PAM (Polyacrylamide).

[0007] In the above technical solution, preferably, the magnetic disk of the supermagnetic drum is inserted into the main shaft, and the magnetic disk is formed by embedding a permanent magnet on a non-magnetic circular plate. The non-magnetic circular plate and the glass sleeve are fixed with reinforcing ribs and connected with shackles, and after the permanent magnet is embedded, they are fixed and sealed with glue, and the interface is sealed with a rubber ring.

[0008] In the above technical solution, preferably, the V-shaped groove is arranged on the outside of the brush so that the material brushed out by the brush enters the V-shaped groove, the cross-section of the V-shaped groove is V-shaped, and the unloading aid jet nozzle is arranged on the upper side of the groove surface of the V-shaped groove and the nozzle direction points along the groove surface to the bottom of the V-shaped groove.

[0009] In the above technical solution, preferably, the supermagnetic separation tank also includes an electrical control system, which includes a power distribution cabinet, a three-phase asynchronous motor, a frequency converter and a suspended matter meter. The suspended matter meter detects the suspended matter in the supermagnetic separation tank. The suspended matter meter is connected to the frequency converter, the frequency converter is connected to the three-phase asynchronous motor, and the power distribution cabinet is respectively connected to the three-phase asynchronous motor, the frequency converter and the recovery pump.

[0010] In the above technical solution, preferably, the spacing angle between the radiating cores of the magnetic turntable is 30°, the gap parts between the radiating cores are supported and fixed by reinforcing ribs, the radiating cores and the isolation sleeve are fixed by reinforcing ribs and connected by shackles, the radiating cores and the isolation sleeve bracket are fixed and sealed by glue filling, and the interfaces are sealed by rubber rings.

[0011] In the above technical solution, preferably, the thickness of the glass sleeve and the isolation sleeve is at least 3 mm.

[0012] In the above technical solution, preferably, the brush and the super magnetic drum both rotate toward the separation groove.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the sewage is treated in a coagulation reaction tank and then enters a super magnetic separation tank, and then precipitated and separated from the sewage through a super magnetic separation device. The magnetic flocs separated by the super magnetic separation device enter a magnetic seed recovery system to remove sludge, and at the same time, the magnetic seeds are recovered. The recovered magnetic seeds are put into a coagulation reaction tank for recycling. By optimizing the structure of the super magnetic drum in the super magnetic separation tank and the magnetic turntable in the magnetic seed recovery tank, the magnetic seeds can be completely and quickly stripped off, and cleaner magnetic powder can be recovered. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a supermagnetic separation device for sewage treatment disclosed in an embodiment of the present invention;

[0015] Figure 2 A schematic diagram of the structure of a super magnetic drum disclosed in an embodiment of the present invention;

[0016] Figure 3 The figure is a schematic diagram of the structure of a magnetic turntable disclosed in one embodiment of the present invention.

[0017] In the figure, the corresponding relationship between each component and the reference numeral is as follows:

[0018] 1. Coagulation reaction tank, 11. Pump, 12. Water inlet pipe, 13. PH adjustment area, 14. Coagulation reaction area, 15. Magnetic seed delivery area, 151. Magnetic powder delivery device, 152. Magnetic seed return pipe, 16. Coagulation reaction area, 17. Diversion pipe,

[0019] 2. Super magnetic separation tank, 21. Super magnetic drum, 211. Main shaft, 212. Magnetic disk, 213. Glass sleeve, 22. Brush, 23. Unloading system, 231. V-shaped groove, 232. Unloading jet nozzle, 233. Recovery pump, 234. Unloading guide tube, 24. Separation tank, 25. Electric control system, 251. Suspended matter measuring instrument, 252. Frequency converter, 253. Three-phase asynchronous motor, 254. Power distribution cabinet,

[0020] 3. Magnetic seed recovery tank, 31. Powerful agitator, 32. Magnetic turntable, 321. Magnetic drum, 322. Radiant magnetic core, 323. Isolation sleeve, 33. Magnetic seed mixer, 34. Sludge treatment system, 35. Scraper. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0023] like Figures 1 to 3As shown, a super magnetic separation device for sewage treatment provided by the present invention comprises: a coagulation reaction tank 1, a super magnetic separation tank 2 and a magnetic seed recovery tank 3; a magnetic powder dispenser 151 is arranged on the coagulation reaction tank 1, and the magnetic powder dispenser 151 adds micro magnetic flocs into the coagulation reaction tank 1; an agitator is arranged in the coagulation reaction tank 1; the coagulation reaction tank 1 introduces sewage from a water inlet pipe 12 through a water pump 11, and leads it out to the super magnetic separation tank 2 through a guide pipe 17; the super magnetic separation tank 2 comprises a super magnetic drum 21, a brush 22, an auxiliary The unloading system 23 and the separation tank 24, the super magnetic drum 21 includes a main shaft 211, a magnetic disk 212 and a glass sleeve 213, the main shaft 211 of the super magnetic drum 21 is arranged parallel to the notch edge of the separation tank 24 and is driven to rotate by a motor, the outer side of the magnetic disk 212 is sleeved with a cylindrical glass sleeve 213, the magnetic disk 212 and the glass sleeve 213 are fixed and sealed, the brush 22 is arranged at the notch edge of the separation tank 24 and is in tangential contact with the outer cylindrical surface of the glass sleeve 213; the unloading system 23 includes The magnetic seed recovery tank 3 includes a V-shaped groove 231, an auxiliary unloading jet nozzle 232 and a recovery pump 233. The material brushed out by the brush 22 enters the V-shaped groove 231. The auxiliary unloading jet nozzle 232 flushes the material to the bottom of the V-shaped groove 231. The bottom of the V-shaped groove 231 is led out to the entrance of the magnetic seed recovery tank 3 through the recovery pump 233 and the auxiliary unloading conduit 234; the magnetic seed recovery tank 3 includes a strong agitator 31, a magnetic turntable 32, a magnetic seed mixer 33, a scraper 35 and a sludge treatment system 34. The strong agitator 31 is installed on the magnetic seed recovery tank 3. At the entrance of the collecting tank 3, the magnetic turntable 32 includes a magnetic drum 321, a radiating magnetic core 322 and an isolating sleeve 323. The radiating magnetic core 322 is arranged on the axial magnetic drum 321 at a radiating angle to form an intermittent magnetic field. A glass isolating sleeve 323 is sleeved on the outer side of the radiating magnetic core 322. The magnetic turntable 32 is driven to rotate by a motor, and the scraper 35 is close to the outer cylindrical surface of the isolating sleeve 323. The magnetic seeds scraped away by the scraper 35 are configured by the magnetic seed dispenser 33 and then returned to the coagulation reaction tank 1 through the magnetic seed reflux pipe 152.

[0024] In this embodiment, the sewage is treated in the coagulation reaction tank 1 and then enters the supermagnetic separation tank 2, and then precipitated and separated from the sewage by the supermagnetic separation equipment. The magnetic flocs separated by the supermagnetic separation equipment enter the magnetic seed recovery system to remove the sludge, and the magnetic seeds are recovered at the same time. The recovered magnetic seeds are put into the coagulation reaction tank 1 for recycling. By optimizing the structure of the supermagnetic drum 21 in the supermagnetic separation tank and the magnetic turntable 32 in the magnetic seed recovery tank 3, the magnetic seeds can be completely and quickly peeled off, and cleaner magnetic powder can be recovered.

[0025] Specifically, the coagulation reaction tank 1 is used to add micro-magnetic flocs to the sewage. The micro-magnetic flocs can absorb suspended matter in the sewage, react to form large alum flower magnetic seed flocs, and then flow into the super magnetic separation tank 2 through the guide pipe 17. A stirrer is provided in the coagulation reaction tank 1. The sewage introduced into the coagulation reaction tank 1 by the pump 11 can fully react with the added micro-magnetic flocs after being stirred by the stirrer, and then be led out to the super magnetic separation tank 2 by the guide pipe 17. The setting of the stirrer makes the reaction of the micro-magnetic flocs more uniform, which can accommodate more polluted suspended matter, thereby enhancing the sewage treatment effect of the micro-magnetic flocs, and the stirrer can enable the micro-magnetic flocs to absorb pollutants faster and form a relatively stable floc structure faster, so as to facilitate the separation of pollutants in the super magnetic separation tank 2.

[0026] In the super magnetic separation pool 2, the rotating shaft of the super magnetic drum 21 is arranged parallel to the pool mouth edge of the separation tank 24, half of the super magnetic drum 21 is located inside the separation tank 24, and the other half is located outside the separation tank 24. In this way, during the rotation of the super magnetic drum 21, it can be adsorbed to the micro magnetic flocs below the liquid level in the super magnetic separation pool 2 under the action of magnetic force, and part of it can also be outside the super magnetic separation pool 2, which is convenient for separating the adsorbed micro magnetic flocs, leaving the separation process from the pool body, and ensuring that the separated magnetic flocs are separated from the sewage. The super magnetic drum 21 is magnetic, and can adsorb the alum flower magnetic seed flocs in the sewage in the separation tank 24 during the rotation process, so that the sludge quickly gathers on the surface of the magnetic turntable.

[0027] Preferably, the V-shaped groove 231 is arranged on the outside of the brush 22 so that the material brushed out by the brush 22 enters the V-shaped groove 231. The cross section of the V-shaped groove 231 is V-shaped. The unloading jet nozzle 232 is arranged on the upper side of the groove surface of the V-shaped groove 231 and the nozzle direction points to the groove bottom of the V-shaped groove 231 along the groove surface. During the rotation of the magnetic turntable, the brush 22 and the super magnetic drum 21 both rotate toward the direction of the separation groove 24. The brush head can scrape off the alum flower magnetic seed flocs on the glass sleeve 213, and under the drive of the brush 22, the alum flower magnetic seed flocs are brought to one side of the V-shaped groove 231, and then the alum flower magnetic seed flocs are introduced into the V-shaped groove 231 through the scraping effect between the bristles and the separation groove 24. Since the scraped alum flower magnetic seed flocs lack fluidity, they will fill the V-shaped groove 231 in a short time. Therefore, multiple unloading jet nozzles 232 are used to flush away the magnetic mud mixture in the V-shaped groove 231 with a certain pressure of water. The bottom of the V-shaped groove 231 is connected to the recovery pump 233 through the auxiliary unloading conduit 234, and the alum flower magnetic seed flocs are introduced into the magnetic seed recovery groove 3 through the recovery pump 233.

[0028] Specifically, the brush 22 and the super magnetic drum 21 are arranged relative to each other, so that the alum flower magnetic seed flocs adsorbed on the outer surface of the super magnetic drum 21 are brushed off. During the brushing process, since the surface of the super magnetic drum 21 is still magnetic, the brush 22 and the super magnetic drum 21 are both arranged to rotate in the direction of the separation tank. Based on the structure of this relative rotational motion, there is a stronger scraping force between the brush 22 and the super magnetic drum 21 to separate the alum flower magnetic seed flocs. The separated alum flower magnetic seed flocs are brought to the V-shaped groove 231 outside the brush 22 by the brush 22. The V-shaped groove 231 is used to initially gather the alum flower magnetic seed flocs. The alum flower magnetic seed flocs gathered in the V-shaped groove 231 are discharged from the bottom of the V-shaped groove 231 through the auxiliary discharge conduit 234 under the action of the water flow impulse of the auxiliary discharge jet nozzle 232, so as to separate the alum flower magnetic seed flocs from the super magnetic separation tank 2. Specifically, the unloading-aiding jet nozzle 232 is installed on the side of the V-shaped groove 231, and the nozzle direction is tangential to the bottom of the corresponding V-shaped groove 231, so that the water flow ejected by the unloading-aiding jet nozzle 232 is sprayed into the bottom of the V-shaped groove 231, and the alum flower magnetic seed flocs gathered in the V-shaped groove 231 are flushed into the unloading-aiding conduit 234. The recovery pump 233 provides power for introducing the alum flower magnetic seed flocs in the unloading-aiding conduit 234 into the magnetic seed recovery tank 3 to avoid blockage caused by the alum flower magnetic seed flocs in the unloading-aiding conduit 234. In the supermagnetic separation tank 2, it is mainly used to separate the pollutants from the original sewage along with the alum flower magnetic seed flocs through the magnetic force between the supermagnetic drum 21 and the magnetic seeds in the alum flower magnetic seed flocs, so as to achieve sewage treatment.

[0029] In the magnetic seed recovery tank 3, the floc separated by the super magnetic separation tank 24 is a mixture of magnetic powder and sludge. First, the single floc is broken up by high-speed stirring of the powerful agitator 31 to separate the magnetic powder and sludge. The magnetic turntable 32 is located at the overflow port of the magnetic seed addition tank. When the mixture of magnetic powder and sludge overflows to the surface of the isolation sleeve 323, the radiation magnetic core 322 adsorbs and recovers the magnetic powder, and the scraper 35 scrapes the magnetic powder to the outer surface of the isolation sleeve 323 where there is no magnetic force generated by the radiation magnetic core 322. Here, the magnetic powder can be easily peeled off the isolation sleeve 323. The sludge cannot be adsorbed by the magnetic drum 321 and is discharged to the sludge treatment system 34 through the sludge pipe set at the bottom of the magnetic seed recovery tank 3. The screened magnetic seeds are re-formed into a micro-magnetic floc solution of a certain concentration through the magnetic seed mixer 33, and enter the coagulation reaction tank 1 through the magnetic seed reflux pipe 152.

[0030] In the above embodiment, the super magnetic separation tank is mainly used to separate the pollutants from the relatively stable alum flower magnetic seed flocs separated from the super magnetic separation tank 2 from the magnetic seeds, and to separate and recycle the magnetic seeds separately, and recycle the clean magnetic powder for recycling to reduce costs. Among them, firstly, the magnetic powder is separated from the sludge by the strong and high-speed stirring action of the powerful agitator 31, and then the magnetic powder is adsorbed by the magnetic force of the magnetic turntable 32, and the sludge settles to the bottom of the tank under the action of gravity and is discharged to the sludge treatment system 34 for the next step of treatment. The magnetic powder separated by the magnetic turntable 32 is re-prepared into a micro-magnetic floc solution by the magnetic seed dispenser 33, and refluxed to the coagulation reaction tank 1 to complete the recycling.

[0031] In the above embodiment, preferably, the coagulation reaction tank 1 includes a pH adjustment zone 13, a coagulant reaction zone 14, a magnetic seed delivery zone 15 and a coagulation reaction zone 16 arranged in sequence from the inlet to the outlet, and each zone is semi-isolated so that the sewage is diverted from the previous zone to the next zone in sequence. The magnetic powder dispenser 151 is arranged in the magnetic seed delivery zone 15, the pH adjustment zone 13 is used to adjust the pH value of the sewage, the coagulant reaction zone 14 is used to add PAC, and the coagulation reaction tank 1 is used to add PAM. The water pump 11 is connected through the water inlet pipe 12 and enters the water inlet of the pH adjustment zone 13 and the coagulation-aiding reaction zone 14; it is diverted to the coagulation-aiding reaction zone 14, and after adding PAC, it is diverted downward to the magnetic seed delivery zone 15, and the magnetic seed delivery zone 15 is provided with a magnetic powder delivery device 151, and the magnetic seed delivery zone 15 is connected to the magnetic seed recovery tank 3 through a magnetic seed reflux pipe 152. After the magnetic seeds are evenly mixed, they are diverted to the coagulation reaction zone 16; the above-mentioned pH adjustment zone 13, coagulation-aiding reaction zone 14, magnetic seed delivery zone 15 and coagulation reaction zone 16 are all provided with agitators; the water outlet end of the coagulation reaction tank 1 is connected to the super magnetic separation tank 2 through a guide pipe 17. Specifically, the pH adjusting zone 13 adjusts the pH to be weakly alkaline, and then enters the coagulation-aiding reaction zone 14 to add PAC. The magnetic powder dispenser 151 provided on the magnetic seed delivery zone 15 is used to add micro-magnetic flocs to the coagulation reaction zone 16. The micro-magnetic flocs can absorb the suspended matter in the sewage to form granular micro-magnetic flocs. Then the sewage enters the coagulation reaction zone 16 with the granular micro-magnetic flocs, and PAM is added in the coagulation reaction zone 16 to form large alum flower magnetic seed flocs, which are then diverted to the supermagnetic separation tank 2 by the guide pipe 17. Among them, the content of Fe3O4 in the magnetic seed is greater than 90%, the particle size is less than 300 meshes, the residual magnetism is less than 8Gs, the dosage of the coagulant PAC is 1-2%, and the dosage of PAM is 1-2ppm.

[0032] In the above embodiment, the coagulation reaction tank 1 is isolated into different reaction zones, and the sewage entering the coagulation reaction tank 1 passes through the pH adjustment zone 13, the coagulation-aiding reaction zone 14, the magnetic seed delivery zone 15 and the coagulation reaction zone 16 in sequence. Preferably, the reaction zones are semi-isolated by a partition wall so that the sewage changes its flow direction from the previous reaction zone to the next reaction zone. In this deflection process, the sewage can have sufficient space and time to react to ensure the complete reaction. An agitator is set in each reaction zone, which can further accelerate the efficiency and completeness of the reaction. Specifically, the pH of the sewage is first adjusted in the pH adjustment zone 13, and the sewage is adjusted to be weakly alkaline so as to react with PAC in the coagulation-aiding reaction zone 14. During the hydrolysis process of PAC, physical and chemical processes such as coagulation, adsorption and precipitation occur. The flocculation and precipitation speed is fast, the applicable pH value range is wide, it is non-corrosive to pipeline equipment, the water purification effect is obvious, and it can effectively remove the color SS, COD, BOD and heavy metal ions such as arsenic and mercury in water. PAM, as a flocculant, generates substances that are insoluble in the solution of the reactants during chemical reactions. Flocculation is the process of flocculation and precipitation of particles in water. After adding PAM coagulant to water, the colloids and dispersed particles of suspended matter generate flocs under the interaction of molecular forces, and they collide and condense with each other during the sedimentation process, and their size and mass continue to increase, and the sedimentation rate continues to increase, forming relatively stable alum flocs.

[0033] In the above embodiment, preferably, the magnetic disk 212 of the supermagnetic drum 21 is penetrated on the main shaft 211, and the magnetic disk 212 is formed by embedding a permanent magnet on a non-magnetic circular plate. The outer side of the permanent magnet is in an arc shape, and the non-magnetic circular plate and the glass sleeve 213 are fixed with reinforcing ribs and connected with shackles, and are fixed and sealed with glue after the permanent magnet is embedded, and the interface is sealed with a rubber ring, so that the supermagnetic drum 21 can not only use magnetic force to absorb magnetic floc sludge during operation, so that mud and water are separated instantly, but also because the supermagnetic drum 21 is wrapped by the glass sleeve 213 with a smooth surface, the alum floc and magnetic seed floc can also be completely separated when the brush 22 scrapes away the alum floc and magnetic seed floc, and the sludge and magnetic seed will not enter the supermagnetic drum 21.

[0034] In the above embodiment, the supermagnetic drum 21 needs to absorb the alum flower magnetic seed flocs and also needs to brush off the alum flower magnetic seed flocs. Therefore, a magnetic disk 212 is arranged inside the supermagnetic drum 21, and a smooth glass sleeve 213 is sleeved on the outside. In order to prevent the alum flower magnetic seed flocs from entering the supermagnetic drum 21 and being adsorbed by the magnetic disk 212, the glass sleeve 213 and the magnetic disk 212 are sealed.

[0035] In the above embodiment, preferably, the super magnetic separation tank 2 also includes an electric control system 25, which includes a power distribution cabinet 254, a three-phase asynchronous motor 253, a frequency converter 252 and a suspended matter measuring instrument 251. The suspended matter measuring instrument 251 detects the suspended matter in the super magnetic separation tank 2. The suspended matter measuring instrument 251 is connected to the frequency converter 252, and the frequency converter 252 is connected to the three-phase asynchronous motor 253 to control the rotation speed of the magnetic disk 212 according to the amount of suspended matter. The frequency converter 252 needs to be used to control the rotation speed of the magnetic disk 212 according to the water quality and flocculation status of the treated sewage, so as to achieve the best separation effect. The power distribution cabinet 254 is respectively connected to the three-phase asynchronous motor 253, the frequency converter 252 and the recovery pump 233 to provide electrical energy.

[0036] In the above embodiment, the separation effect and separation rate of the supermagnetic drum 21 are judged according to the concentration of the suspended matter in the supermagnetic separation pool 2 detected by the suspended matter measuring instrument 251, so as to further control the frequency converter 252 to adjust the rotation speed of the three-phase asynchronous motor 253, and then control the rotation speed of the supermagnetic drum 21 to improve the separation efficiency of the supermagnetic drum 21. If the supermagnetic drum 21 rotates too slowly, the suspended matter in the supermagnetic separation pool 2 cannot be adsorbed in time for separation. If the supermagnetic drum 21 rotates too fast, the brush 22 cannot completely remove the suspended matter adsorbed on the surface of the glass sleeve 213, resulting in poor separation effect. Therefore, it is necessary to limit the rotation speed of the supermagnetic drum 21 to a preset range according to the concentration of the suspended matter.

[0037] In the above embodiment, preferably, the margin angle between the radiating magnetic cores 322 of the magnetic turntable 32 is 30°. Similar to the structure of the super magnetic drum 21, the gap between the radiating magnetic cores 322 is supported and fixed by reinforcing ribs, the radiating magnetic cores 322 and the isolation sleeve 323 are fixed by reinforcing ribs and connected by yoke nails, the radiating magnetic cores 322 and the isolation sleeve 323 bracket are sealed by glue filling, and the interface is sealed by a rubber ring. The setting of the margin angle allows the formation of a magnetic field gap between the radiating magnetic cores 322, and an intermittent magnetic field is formed during the rotation of the magnetic turntable 32, so that when the magnetic powder overflows to the surface of the isolation sleeve 323, the scraper 35 can easily peel off the magnetic seeds when it scrapes the magnetic seeds to the outer surface of the isolation sleeve 323 where there is no magnetic force generated by the radiating magnetic cores 322, thereby realizing efficient recovery of the magnetic seeds.

[0038] In the above embodiment, the radiant magnetic core 322 adsorbs the magnetic powder. In order to completely separate the magnetic powder, the magnetic turntable 32 adopts an intermittent magnetic field design, and the intervals between the radiant magnetic core 322 are filled with reinforcing ribs. This part has no magnetism. The scraper 35 is arranged on the outside of the isolation sleeve 323 corresponding to the reinforcing ribs. When the isolation sleeve 323 rotates to this position, the magnetic force on the magnetic powder adsorbed on the outside of the isolation sleeve 323 is greatly weakened. At this time, the scraper 35 can easily scrape the magnetic powder with less magnetic adsorption effect away from the isolation sleeve 323.

[0039] In the above embodiment, preferably, the thickness of the glass sleeve 213 and the isolation sleeve 323 is at least 3 mm. They are both made of glass material, and the smooth outer surface allows the magnetic species or flocs adsorbed on the surface to be easily scraped off.

[0040] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A supermagnetic separation device for sewage treatment, characterized in that: include: Coagulation reaction tank, super magnetic separation tank and magnetic seed recovery tank; The coagulation reaction tank is provided with a magnetic powder dispenser, and the magnetic powder dispenser adds micro-magnetic flocs into the coagulation reaction tank. The coagulation reaction tank is provided with an agitator, and the coagulation reaction tank introduces sewage from the water inlet pipe through a pump, and leads it out to the super magnetic separation tank through the guide pipe; The supermagnetic separation pool comprises a supermagnetic drum, a brush, an auxiliary unloading system and a separation tank. The supermagnetic drum comprises a main shaft, a magnetic disk and a glass sleeve. The main shaft of the supermagnetic drum is arranged parallel to the notch edge of the separation tank and is driven to rotate by a motor. The outer side of the magnetic disk is sleeved with a cylindrical glass sleeve. The magnetic disk and the glass sleeve are fixed and sealed. The brush is arranged at the notch edge of the separation tank and is in tangential contact with the outer cylindrical surface of the glass sleeve. The unloading assistance system includes a V-shaped groove, an unloading assistance jet nozzle and a recovery pump. The material brushed out by the brush enters the V-shaped groove. The unloading assistance jet nozzle flushes the material to the bottom of the V-shaped groove. The bottom of the V-shaped groove is led out to the entrance of the magnetic seed recovery groove through the unloading assistance conduit through the recovery pump; The magnetic seed recovery tank includes a powerful agitator, a magnetic turntable, a magnetic seed mixer, a scraper and a sludge treatment system. The powerful agitator is installed at the entrance of the magnetic seed recovery tank. The magnetic turntable includes a magnetic drum, a radiating magnetic core and an isolation sleeve. The radiating magnetic core is arranged on the magnetic drum of the axis at a radiating angle to form an intermittent magnetic field. The outer side of the radiating magnetic core is sleeved with the glass isolation sleeve. The magnetic turntable is driven to rotate by a motor. The scraper is close to the outer cylindrical surface of the isolation sleeve. The magnetic seeds scraped off by the scraper are configured by the magnetic seed mixer and then returned to the coagulation reaction tank through the magnetic seed reflux pipe. The coagulation reaction tank comprises a pH adjustment zone, a coagulant reaction zone, a magnetic seed delivery zone and a coagulation reaction zone arranged in sequence from the inlet to the outlet, and each zone is semi-isolated so that the sewage is diverted from the previous zone to the next zone in sequence, each zone is provided with the agitator, the magnetic powder delivery device is arranged in the magnetic seed delivery zone, the pH adjustment zone is used to adjust the pH value of the sewage, the coagulant reaction zone is used to add PAC, and the coagulation reaction tank is used to add PAM; The magnetic disk of the supermagnetic drum is inserted on the main shaft. The magnetic disk is formed by embedding a permanent magnet on a non-magnetic circular plate. The non-magnetic circular plate and the glass sleeve are fixed by reinforcing ribs and connected by shackles. After the permanent magnet is embedded, the disk is fixed and sealed by glue filling, and the interface is sealed by a rubber ring. The spacing angle between the radiating cores of the magnetic turntable is 30°, the gap between the radiating cores is supported and fixed by reinforcing ribs, the radiating cores and the isolation sleeve are fixed by reinforcing ribs and connected by shackles, the radiating cores and the isolation sleeve bracket are fixed and sealed by glue filling, and the interface is sealed with a rubber ring.

2. The supermagnetic separation device for sewage treatment according to claim 1, characterized in that: The V-shaped groove is arranged on the outer side of the brush so that the material brushed out by the brush enters the V-shaped groove. The cross-section of the V-shaped groove is V-shaped. The unloading aid jet nozzle is arranged on the upper side of the groove surface of the V-shaped groove and the nozzle direction points along the groove surface to the bottom of the V-shaped groove.

3. The supermagnetic separation device for sewage treatment according to claim 1, characterized in that: The supermagnetic separation tank also includes an electrical control system, which includes a power distribution cabinet, a three-phase asynchronous motor, a frequency converter and a suspended matter detector. The suspended matter detector detects suspended matter in the supermagnetic separation tank. The suspended matter detector is connected to the frequency converter, the frequency converter is connected to the three-phase asynchronous motor, and the power distribution cabinet is respectively connected to the three-phase asynchronous motor, the frequency converter and the recovery pump.

4. The supermagnetic separation device for sewage treatment according to claim 1, characterized in that: The thickness of the glass sleeve and the isolation sleeve is at least 3 mm.

5. The supermagnetic separation device for sewage treatment according to claim 1, characterized in that: The brush and the super magnetic drum both rotate toward the separation groove.

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