Zirconium oxide production wastewater adsorption purification treatment process

Abstract

The invention provides a zirconium oxide production wastewater adsorption and purification treatment process, which comprises the following steps: feeding wastewater into a PH regulating tank, and adjusting the acid concentration of the production wastewater by using an alkaline chemical treatment reagent, thereby reducing the chloride ion concentration in the production wastewater and further reducing the concentration of organic pollutants; after the pH is adjusted, feeding the wastewater into a flocculation tank, adding a flocculating agent, standing for a period of time, taking supernatant liquid, conveying the supernatant liquid into an upper concentration box, and conveying the wastewater into six groups of adsorption cylinders through six groups of connecting pipes and sleeves of the upper concentration box; compared with the prior art, the cylindrical activated carbon adsorption net in the adsorption cylinder is used for adsorbing organic matter impurities in wastewater, the backflow assembly flushes the adsorption cylinder after overturning, and organic matter wastewater generated after flushing is adsorbed again through the intact adsorption cylinder; and the wastewater treatment efficiency is maintained while the efficient adsorption capacity of the activated carbon adsorption net in the adsorption cylinder is maintained.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to an adsorption purification treatment process for zirconium oxide production wastewater. Background Art

[0002] Zirconia products are commonly used in cosmetic dental restorations, not only for this purpose but also in ceramics, refractory fibers, refractory crucibles, and abrasives. Zirconia's high melting point, high resistivity, high refractive index, and low thermal expansion coefficient make it an important high-temperature resistant material, ceramic insulation, and sunscreen. The production and processing of zirconia products produces wastewater containing high concentrations of zirconia particles and potentially other chemicals. This wastewater typically originates from cleaning, passivation, and polishing processes. Zirconia wastewater also includes waste acid from impurity removal, washing wastewater, centrifugation wastewater, and wastewater from daily equipment cleaning and floor cleaning. Due to the numerous production steps and the high use of hydrochloric acid, the wastewater contains pH, hydrochloric acid, SS, chloride ions, and COD. Due to its complex composition and acidic nature, zirconia wastewater cannot be discharged directly into water bodies and requires treatment before discharge.

[0003] In the existing technology, most of the wastewater generated by the production of zirconia products is removed from organic matter by activated carbon adsorption. However, after a period of use, the activated carbon material is easily clogged because the wastewater contains a large amount of organic matter, which in turn affects its normal adsorption effect. Conventional cleaning methods will affect the wastewater treatment process and are relatively inconvenient. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a zirconium oxide production wastewater adsorption purification treatment process to solve the problems raised in the above background technology. The present invention has a novel structure. The reflux component flushes the adsorption cylinder after flipping it, and the organic wastewater generated after flushing is again adsorbed through the intact adsorption cylinder for treatment, maintaining the efficient adsorption capacity of the activated carbon adsorption net in the adsorption cylinder while maintaining the wastewater treatment efficiency.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solution: a zirconium oxide production wastewater adsorption purification treatment process, the treatment process comprising the following steps:

[0006] (1) The wastewater is sent to the pH adjustment tank, where the alkaline chemical treatment reagent adjusts the acid concentration of the production wastewater, reduces the chloride ion concentration in the production wastewater, and thus reduces the concentration of organic pollutants;

[0007] (2) After the pH adjustment is completed, the wastewater is sent to the flocculation tank, flocculant is added, and it is left to stand for a period of time. The supernatant is taken and sent to the upper concentration box. The wastewater is then sent to the six groups of adsorption cylinders through the six groups of connecting pipes and sleeves of the upper concentration box;

[0008] (3) The organic impurities in the wastewater are adsorbed and treated by the cylindrical activated carbon adsorption net in the adsorption cylinder, and then sent to the interior of the lower concentration box through the inlet and outlet pipes at the bottom of the adsorption cylinder, and then discharged from the discharge pipe of the lower concentration box;

[0009] (4) After the adsorption cylinder has been used for a period of time, the adsorption cylinder is separated from the sleeves of the upper and lower central boxes through the reflux assembly, and is moved outward and turned 180 degrees. The reflux pipe and backwash pipe of the reflux assembly are connected to the inlet and outlet pipes at the upper and lower ends of the adsorption cylinder;

[0010] (5) The backwash pipe draws the treated water inside the lower concentration box to the top of the adsorption cylinder, and backwashes the adsorption cylinder from top to bottom. The wastewater generated by backwashing is treated by secondary adsorption by the adsorption cylinders of other groups.

[0011] Furthermore, according to the connecting tube and sleeve described in step (2), the sliding sleeve of the sleeve is connected to the outer end of the connecting tube, and the two are connected by a spring. Rubber rings are provided on the top and bottom inner walls of the sleeve, and a sealing plate is fixed on the inner wall of the open end of the sleeve. The sealing plate seals the connecting tube after the sleeve moves.

[0012] Furthermore, according to the reflux assembly described in step (4), the reflux assembly includes a reflux pipe and a backwash pipe. The reflux pipe and the backwash pipe are on a vertical plane and are initially located between the two groups of adsorption cylinders, and will not interfere with the normal connection between the inlet and outlet pipes at the top and bottom of the adsorption cylinder and the sleeves of the upper and lower central boxes.

[0013] Furthermore, in the reflux component processing stage, the driving motor of the reflux component drives the disc, fixed rod, suction pump and reflux pipe to rotate toward the adsorption cylinder where the wastewater flow is reduced. The rotation of the reflux pipe drives the connecting plate to rotate at the same time, and the arc plate is pushed upward by the extended end of the electric push rod. The sleeve moves upward along the outer end of the connecting pipe to compress the reset spring until the sleeve is separated from the inlet and outlet pipes, and the sealing plate at the open end of the sleeve seals the connecting pipe until the bottom of the reflux pipe corresponds to the inlet and outlet pipes at the bottom of the adsorption cylinder with problems, and the upper end corresponds to the top of another group on the straight line.

[0014] Furthermore, according to the adsorption cylinder structure described in step (4), side panels are rotatably installed on both sides of the adsorption cylinder through bearings, a vertical frame is fixed to the bottom of the side panel, a slide groove is opened at the position corresponding to the bottom of the vertical frame, and a driving screw is built into the slide groove, and the adsorption cylinder moves outward along with the driving screw in the slide groove.

[0015] Furthermore, the gear provided at the outer end of the horizontal plate of the adsorption cylinder will contact and mesh with the tooth plate and rotate after the adsorption cylinder moves outward, causing the adsorption cylinder to flip over as a whole.

[0016] Furthermore, the transverse plate of the adsorption cylinder passes through the side plate and is fixedly connected to the bearing ring, so as to maintain a transverse arrangement. When the adsorption cylinder moves outward along with the driving screw in the slide groove, the side plate slides along the surface of the transverse plate. At this time, the transverse plate plays a role in limiting and guiding the side plate, thereby maintaining the stability of the adsorption cylinder when it is pushed outward.

[0017] Furthermore, according to the backwash stage described in step (5), the top of the backwash pipe corresponds to the inlet and outlet pipe at the top of the adsorption cylinder with the problem, and at this time the adsorption cylinder with the problem has been turned 180 degrees. An additional water pump is installed on the swivel to draw the wastewater that has been filtered by the adsorption cylinder in the lower concentration box through the backwash pipe, and the cylindrical activated carbon adsorption net in the adsorption cylinder is flushed from top to bottom to flush out the impurities blocked in the cylindrical activated carbon adsorption net.

[0018] Furthermore, according to the reflux stage described in step (5), the wastewater backwashed in the adsorption cylinder is returned to the interior of a group of adsorption cylinders corresponding to the straight line through the reflux pipe and the suction pump, the wastewater is adsorbed again, and the wastewater containing organic impurities is filtered again. After the backwash is completed, the adsorption cylinder is restored to the connection with the upper and lower collection boxes.

[0019] Furthermore, the lower centralizing box is connected to the base via a fixed column, and the fixed frame is connected to the upper centralizing box and the base, both of which are intended to provide rotation space for the reflux pipe and the backwash pipe while maintaining the stability of the entire device and not causing movement interference.

[0020] Beneficial effects of the present invention:

[0021] 1. The present invention connects the lower centralizing box and the base through a fixed column, and the fixed frame connects the upper centralizing box and the base. Both are to provide rotation space for the reflux pipe and the backwash pipe while maintaining the stability of the entire device and not causing movement interference.

[0022] 2. The present invention can drive the disc to rotate through the driving motor, and the suction pump and the return pipe rotate synchronously through the connection of the fixed rod, and the connection between the swivel and the output end of the driving motor enables the backwash pipe to rotate together with the return pipe, and the top of the backwash pipe and the bottom of the return pipe always correspond to the upper and lower inlet and outlet pipe positions of a group of adsorption cylinders. While backwashing the clogged adsorption cylinder, the wastewater generated by backwashing is again adsorbed and filtered through the intact adsorption cylinder to maintain the treatment efficiency in the adsorption cylinder. At the same time, the generated wastewater is subjected to secondary treatment to avoid flowing into the lower concentration box.

[0023] 3. The present invention uses a reflux component to cyclically backwash all the adsorption cylinders, thereby improving the treatment efficiency of the adsorption cylinders for organic impurities in wastewater. The flushing does not need to be performed frequently. At the same time, the backwashing is only to avoid the problem of the cylindrical activated carbon adsorption net being unable to be used normally due to blockage to a certain extent. After a period of use, it is still necessary to maintain the adsorption capacity of the cylindrical activated carbon adsorption net by replacement. In this solution, the reflux pipe and the backwash pipe actually correspond to two groups of adsorption cylinders. When one group of adsorption cylinders is backwashed, the other group receives re-adsorption treatment for the backwashed wastewater, which will not interfere with the normal use of the other four groups of adsorption cylinders. Before the backwashing process, the adsorption cylinder needs to be reversed to ensure the high efficiency of the backwashing.

[0024] 4. The present invention is fixedly connected to the bearing ring through the horizontal plate through the side plate, which can maintain a horizontal arrangement. When the adsorption cylinder moves outward with the driving screw in the slide groove, the side plate slides along the surface of the horizontal plate. At this time, the horizontal plate plays a role in limiting and guiding the side plate, maintaining the stability of the adsorption cylinder when it is pushed outward. In the process of the adsorption cylinder moving to the outermost side, the gear will contact and mesh with the tooth plate to rotate, so that the adsorption cylinder will flip over as a whole. Before this, the inlet and outlet pipes at the upper and lower ends of the adsorption cylinder have been separated from the sleeves of the upper and lower collecting boxes, so there will be no interference in the flipping of the adsorption cylinder at this time, and the adsorption cylinder can be pushed outward along the slide groove, which can give the adsorption cylinder enough rotation space and will not collide with other adsorption cylinders or reflux components. When the vertical frame connected to the side plates moves outward along the slide groove, it can avoid the bottom of the reflux pipe and will not interfere with the docking of the bottom of the adsorption cylinder with the bottom of the reflux pipe.

[0025] 5. Compared with the prior art, the present invention uses a reflux component to flush the adsorption cylinder after it is turned over, and the organic wastewater generated after flushing is again adsorbed through the intact adsorption cylinder for treatment, thereby maintaining the efficient adsorption capacity of the activated carbon adsorption net in the adsorption cylinder and maintaining the wastewater treatment efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a process flow chart of a zirconium oxide production wastewater adsorption purification process according to the present invention;

[0027] Figure 2 This is a schematic diagram of the overall structure of a zirconium oxide production wastewater adsorption purification treatment process of the present invention;

[0028] Figure 3 This is a schematic diagram of the top structure of an upper centralized box for an adsorption purification process for zirconium oxide production wastewater according to the present invention;

[0029] Figure 4 This is a schematic diagram of the top structure of an adsorption cylinder for an adsorption purification process for zirconium oxide production wastewater according to the present invention;

[0030] Figure 5This is a schematic diagram of the connection between the reflux component and the lower centralizing box of a zirconium oxide production wastewater adsorption purification process of the present invention;

[0031] Figure 6 This is a schematic diagram of the lower centralization box structure of a zirconium oxide production wastewater adsorption purification treatment process of the present invention;

[0032] Figure 7 This is a schematic diagram of the connection between the upper concentration box and the top of the adsorption cylinder in a zirconium oxide production wastewater adsorption purification process of the present invention;

[0033] Figure 8 This is a schematic diagram of the bottom structure of an upper centralized box in a zirconium oxide production wastewater adsorption purification process according to the present invention;

[0034] Figure 9 This is a schematic structural diagram of a reflux component of a zirconium oxide production wastewater adsorption purification process according to the present invention;

[0035] Figure 10 The figure is a schematic diagram of the installation structure of an adsorption cylinder for a zirconium oxide production wastewater adsorption purification treatment process according to the present invention.

[0036] In the figure: 1. Base; 2. Upper central box; 21. Water inlet pipe; 22. Fixed frame; 23. Connecting pipe; 24. Casing; 25. Return spring; 26. Arc plate; 27. Sealing plate; 3. Adsorption cylinder; 31. Side plate; 32. Vertical frame; 33. Slide; 34. Inlet and outlet pipes; 35. Gear; 36. Horizontal plate; 37. Gear plate; 4. Lower central box; 41. Drain pipe; 42. Swivel; 43. Fixed column; 5. Reflux assembly; 51. Suction pump; 52. Reflux pipe; 53. Backflush pipe; 54. Bearing ring; 55. Connecting plate; 56. Electric push rod; 57. Drive motor; 58. Disc; 59. Fixing rod. DETAILED DESCRIPTION

[0037] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0038] See also Figures 1 to 10 The present invention provides a technical solution: a zirconium oxide production wastewater adsorption purification treatment process, the treatment process comprising the following steps:

[0039] (1) The wastewater is sent to the pH adjustment tank, where the alkaline chemical treatment reagent adjusts the acid concentration of the production wastewater, reduces the chloride ion concentration in the production wastewater, and thus reduces the concentration of organic pollutants;

[0040] (2) After the pH adjustment is completed, the wastewater is sent to the flocculation tank, flocculant is added, and it is left to stand for a period of time. The supernatant is taken and sent to the upper concentration box. The wastewater is then sent to the six groups of adsorption cylinders through the six groups of connecting pipes and sleeves of the upper concentration box;

[0041] (3) The organic impurities in the wastewater are adsorbed and treated by the cylindrical activated carbon adsorption net in the adsorption cylinder, and then sent to the interior of the lower concentration box through the inlet and outlet pipes at the bottom of the adsorption cylinder, and then discharged from the discharge pipe of the lower concentration box;

[0042] (4) After the adsorption cylinder has been used for a period of time, the adsorption cylinder is separated from the sleeves of the upper and lower central boxes through the reflux assembly, and is moved outward and turned 180 degrees. The reflux pipe and backwash pipe of the reflux assembly are connected to the inlet and outlet pipes at the upper and lower ends of the adsorption cylinder;

[0043] (5) The backwash pipe draws the treated water inside the lower concentration box to the top of the adsorption cylinder, and backwashes the adsorption cylinder from top to bottom. The wastewater generated by backwashing is treated by secondary adsorption by the adsorption cylinders of other groups.

[0044] It includes a base 1, a lower centralized box 4 is provided on the top of the base 1, and six groups of adsorption cylinders 3 are symmetrically provided on the top of the lower centralized box 4 at equal distances from the center of the circle, an upper centralized box 2 is installed on the top of the adsorption cylinder 3, a water inlet pipe 21 is fixed on the top of the upper centralized box 2, a drain pipe 41 is provided at the bottom of the lower centralized box 4, a cylindrical activated carbon adsorption net is installed inside the adsorption cylinder 3, a reflux component 5 is provided at the center of the six groups of adsorption cylinders 3, and the reflux component 5 includes a reflux pipe 52, the vertical surface of the reflux pipe 52 is located at the axis of the six groups of adsorption cylinders 3, and the upper and lower ends of the reflux pipe 52 respectively correspond to the top and bottom of the adsorption cylinder 3 corresponding to the two groups of straight lines, the top and bottom of the adsorption cylinder 3 are fixed with inlet and outlet pipes 34, and the upper and lower centralized boxes 2 and the lower centralized boxes 4 are provided with connecting pipes 23 at the positions corresponding to the inlet and outlet pipes 34, and the outer periphery of the connecting pipe 23 is slidingly sealed. The envelope is connected to a sleeve 24, which can be slidably and sealingly sleeved on the outer surface of the inlet and outlet pipes 34. A backwash pipe 53 is installed on one side of the lower collecting box 4, and the top of the backwash pipe 53 is in the same line as the bottom of the reflux pipe 52. When the device is used, the supernatant after the flocculation is precipitated is sent into the upper collecting box 2 through the water inlet pipe 21, and is sent into the six adsorption cylinders 3 through the six connecting pipes 23 and the sleeve 24 of the upper collecting box 2. The organic impurities in the wastewater are adsorbed and treated by the cylindrical activated carbon adsorption net in the adsorption cylinder 3, and then sent to the lower collecting box 4 through the inlet and outlet pipes 34 at the bottom of the adsorption cylinder 3, and then discharged from the drain pipe 41 of the lower collecting box 4. The wastewater enters the next treatment process, and the cylindrical activated carbon adsorption net in the adsorption cylinder 3 is flushed through the reflux component 5 to prevent organic impurities from clogging the cylindrical activated carbon adsorption net and affecting the treatment efficiency of the wastewater.

[0045] In this embodiment, the bottom of the lower centralized box 4 is equidistantly fixed with fixed columns 43, and the bottom of the fixed columns 43 is on the base 1. A fixed frame 22 is fixed to one side of the upper centralized box 2, and the bottom of the fixed frame 22 is fixedly connected to the outer side of the base 1. The fixed columns 43 connect the lower centralized box 4 and the base 1, and the fixed frame 22 connects the upper centralized box 2 and the base 1. Both are for providing the reflux pipe 52 and the backwash pipe 53 with rotation space while maintaining the stability of the entire device and not causing movement interference.

[0046] In this embodiment, the reflux assembly 5 also includes a suction pump 51, and the suction pump 51 is fixedly installed on the vertical surface of the reflux pipe 52. A disc 58 is rotatably installed at the center of the circle of the lower concentration box 4. Two fixing rods 59 are fixed to the bottom of the suction pump 51, and the fixing rods 59 are fixedly connected to the disc 58. A driving motor 57 is fixed to the position of the base 1 corresponding to the center of the bottom of the disc 58, and the output end of the driving motor 57 is fixedly connected to the disc 58. A swivel 42 is rotatably installed on the side of the lower concentration box 4, and the bottom of the recoil pipe 53 is fixedly connected to the swivel 42, and the recoil pipe 53 passes through the swivel 42 and is communicated with the interior of the lower concentration box 4, and the swivel 42 is connected to the driving motor 57. The output end of the motor 57 is fixedly connected, and the disc 58 can be driven to rotate by driving the motor 57. The suction pump 51 and the return pipe 52 are connected by the fixed rod 59 to rotate synchronously, and the connection between the swivel 42 and the output end of the driving motor 57 makes the backwash pipe 53 rotate together with the return pipe 52, and the top of the backwash pipe 53 and the bottom of the return pipe 52 always correspond to the upper and lower inlet and outlet pipes 34 of a group of adsorption cylinders 3. While backwashing the clogged adsorption cylinder 3, the wastewater generated by the backwashing is again adsorbed and filtered through the intact adsorption cylinder 3 to maintain the treatment efficiency in the adsorption cylinder 3. At the same time, the generated wastewater is subjected to secondary treatment to avoid flowing into the lower concentration box 4.

[0047] In this embodiment, the top and bottom of the return pipe 52 are fixed with connecting plates 55, and the connecting plates 55 are offset from the upper and lower ends of the return pipe 52 by a certain angle. Electric push rods 56 are fixed at both ends of the connecting plate 55, and an arc plate 26 is fixed on the inner surface of the sleeve 24. The extended end of the electric push rod 56 can be squeezed into contact with the arc plate 26. The outer side of the connecting pipe 23 is sleeved with a return spring 25, and the two ends of the return spring 25 are fixedly connected to the connecting pipe 23 and the sleeve 24 respectively. Rubber rings are provided on the top and bottom inner walls of the sleeve 24, and a sealing plate 27 is fixed on the inner wall of the open end of the sleeve 24. The sealing plate 27 blocks the connecting pipe 23 after the sleeve 24 moves. In the initial state, the return pipe 52 and the recoil The pipe 53 is on a vertical plane and is located between the two groups of adsorption cylinders 3. At this time, it will not interfere with the normal connection between the inlet and outlet pipes 34 at the top and bottom of the adsorption cylinder 3 and the sleeves 24 of the upper and lower centralized boxes 2 and 4. The wastewater in the upper centralized box 2 is transported through the connecting pipes 23 and the sleeves 24, enters the interior through the inlet and outlet pipes 34 at the upper end of the adsorption cylinder 3, removes organic matter and impurities through the cylindrical activated carbon adsorption net inside the adsorption cylinder 3, and is discharged from the inlet and outlet pipes 34 at the bottom of the adsorption cylinder 3, and enters the interior of the lower centralized box 4 through the sleeves 24 and connecting pipes 23 of the lower centralized box 4, and finally is discharged from the drain pipe 41 to carry out the next stage of wastewater treatment. In this process, a flow sensor can be installed inside each connecting pipe 23 of the lower centralized box 4 to monitor the adsorption flow through the flow sensor. The efficiency of discharging wastewater from the cylinder 3 is monitored. When it is detected that the efficiency of sending wastewater out of the adsorption cylinder 3 is low, the electrical signal is transmitted to the reflux component 5, and the driving motor 57 drives the disc 58, the fixed rod 59, the suction pump 51 and the reflux pipe 52 to rotate toward the adsorption cylinder 3 where the wastewater flow rate is reduced. The two ends of the reflux pipe 52 correspond to two groups of adsorption cylinders 3 corresponding to the axial straight lines of the six groups of adsorption cylinders 3. The rotation of the reflux pipe 52 drives the connecting plate 55 to rotate at the same time, and the electric push rods 56 at both ends of the connecting plate 55 just correspond to the positions of the arc plates 26 of the two groups of adsorption cylinders 3. The arc plates 26 are pushed upward by the extended ends of the electric push rods 56, and the sleeve 24 moves upward along the outer end of the connecting pipe 23 to compress the reset spring 25 until the sleeve 24 is separated from the inlet and outlet pipes 34, and the sleeve 2 The sealing plate 27 at the open end of the 4 seals the connecting pipe 23. At this time, the upper concentration box 2 no longer sends wastewater to the top of the two groups of adsorption cylinders 3 corresponding to the straight line, and the lower concentration box 4 no longer receives the wastewater discharged by the two groups of adsorption cylinders 3. The length of the arc plate 26 can meet the need for the return pipe 52 to continue rotating and keep the sleeve 24 separated from the inlet and outlet pipes 34 until the bottom of the return pipe 52 corresponds to the inlet and outlet pipes 34 at the bottom of the adsorption cylinder 3 with problems, the upper end corresponds to the top of the other group on the straight line, and the top of the backwash pipe 53 corresponds to the inlet and outlet pipes 34 at the top of the adsorption cylinder 3 with problems. At this time, the adsorption cylinder 3 with problems has been turned 180 degrees. An additional water pump is installed on the swivel 42 to draw the wastewater that has been filtered by the adsorption cylinder 3 in the lower concentration box 4 into the backwash pipe 53.The cylindrical activated carbon adsorption net in the adsorption cylinder 3 is flushed from top to bottom to flush out the impurities blocked in the cylindrical activated carbon adsorption net, and then returned to the inside of another set of intact adsorption cylinders 3 through the reflux pipe 52 to filter the wastewater containing organic impurities again. After the backwash is completed, the adsorption cylinder 3 is restored to the connection with the upper concentration box 2 and the lower concentration box 4 and continued to be used. In this solution, the use of the reflux component 5 is the first mode mentioned above. The other mode does not require the detection of the flow sensor, and the reflux component 5 is rotated regularly to circulate backwashing of all the adsorption cylinders 3, thereby improving the adsorption cylinder 3 for organic impurities in the wastewater. The treatment efficiency is high, and the flushing does not need to be performed frequently. At the same time, backwashing is only to avoid the problem of the cylindrical activated carbon adsorption net being unable to be used normally due to clogging to a certain extent. After using it for a period of time, it still needs to be replaced to maintain the adsorption capacity of the cylindrical activated carbon adsorption net. In this solution, the return pipe 52 and the backwash pipe 53 actually correspond to two groups of adsorption cylinders 3. When one group of adsorption cylinders 3 is backwashed, the other group receives the backwashed wastewater for re-adsorption treatment, which will not interfere with the normal use of the other four groups of adsorption cylinders 3. Before the backwashing process, the adsorption cylinders 3 need to be turned in order to ensure the high efficiency of backwashing.

[0048] The cam 33 is fixed to the bottom of the cam 33 and the bottom of the cam 33 is fixed to the bottom of the cam 33. The cam 33 is fixed to the bottom of the cam 33 and the bottom of the cam 33 is fixed to the bottom of the cam 33. The cam 33 is fixed to the bottom of the cam 33 and the bottom of the cam 33 is fixed to the bottom of the cam 33. The cam 33 is fixed to the bottom of the cam 33 and the cam 33 is fixed to the bottom of the cam 33. When the cam 35 is in the forward direction, the cam 35 is in the forward direction, and the cam 35 is in the forward direction, so that the cam 35 can move in a reverse direction, thereby preventing the cam 3 from sliding outward and causing the cam 3 to slide downward.

[0049] When the device is in use, the supernatant after flocculation precipitation is sent into the upper concentration box 2 through the water inlet pipe 21, and is sent into the six adsorption cylinders 3 through the six connecting pipes 23 and the sleeve 24 of the upper concentration box 2. The organic impurities in the wastewater are adsorbed and treated by the cylindrical activated carbon adsorption net in the adsorption cylinder 3, and then sent into the lower concentration box 4 through the inlet and outlet pipes 34 at the bottom of the adsorption cylinder 3, and then discharged from the drain pipe 41 of the lower concentration box 4. The wastewater enters the next treatment process. When the adsorption cylinder 3 moves outward with the driving screw in the slide 33, the side plate 31 slides along the surface of the cross plate 36. At this time, the cross plate 36 plays a role in limiting and guiding the side plate 31, maintaining the stability of the adsorption cylinder 3 when it is pushed outward. In the process of the adsorption cylinder 3 moving to the outermost side, the gear 35 will contact the tooth plate 37 The hopper 32 is engaged and rotated, so that the adsorption cylinder 3 is turned over as a whole. Before this, the inlet and outlet pipes 34 at the upper and lower ends of the adsorption cylinder 3 have been separated from the sleeves 24 of the upper and lower collecting boxes 2 and the lower collecting boxes 4. Therefore, there will be no interference when the adsorption cylinder 3 is turned over, and the adsorption cylinder 3 is pushed outward along the chute 33, which can give the adsorption cylinder 3 enough rotation space and will not collide with other adsorption cylinders 3 or the reflux component 5. When the vertical frame 32 connecting the side plate 31 moves outward along the chute 33, it can avoid the bottom of the reflux pipe 52 and will not interfere with the docking of the bottom of the adsorption cylinder 3 with the bottom of the reflux pipe 52. A flow sensor is installed inside each connecting pipe 23 of the lower collecting box 4. The efficiency of discharging wastewater in the adsorption cylinder 3 is monitored by the flow sensor. When it is detected that the efficiency of discharging wastewater in the adsorption cylinder 3 is low, the electrical signal is transmitted. Pass it to the reflux assembly 5, and the driving motor 57 drives the disc 58, the fixed rod 59, the suction pump 51 and the reflux pipe 52 to rotate toward the adsorption cylinder 3 where the wastewater flow rate is reduced. The two ends of the reflux pipe 52 correspond to the two groups of adsorption cylinders 3 corresponding to the axial straight line of the six groups of adsorption cylinders 3. The rotation of the reflux pipe 52 drives the connecting plate 55 to rotate at the same time, and the electric push rods 56 at both ends of the connecting plate 55 just correspond to the position of the arc plates 26 of the two groups of adsorption cylinders 3. The arc plates 26 are pushed upward by the extended ends of the electric push rods 56, and the sleeve 24 moves upward along the outer end of the connecting pipe 23 to compress the reset spring 25 until the sleeve 24 is separated from the inlet and outlet pipes 34, and the sealing plate 27 at the open end of the sleeve 24 blocks the connecting pipe 23. At this time, the upper central box 2 no longer corresponds to the two groups of adsorption cylinders corresponding to the straight line. The wastewater is sent out from the top of the cylinder 3, and the lower collecting box 4 no longer receives the wastewater discharged from the two groups of adsorption cylinders 3. The length of the arc plate 26 can meet the need for the return pipe 52 to continue rotating, and keep the sleeve 24 separated from the inlet and outlet pipes 34, until the bottom of the return pipe 52 corresponds to the inlet and outlet pipes 34 at the bottom of the adsorption cylinder 3 with problems, and the upper end corresponds to the top of another group on the straight line. The top of the backwash pipe 53 corresponds to the inlet and outlet pipes 34 at the top of the adsorption cylinder 3 with problems, and at this time the adsorption cylinder 3 with problems has been turned 180 degrees. An additional water pump is installed on the swivel 42 to draw the wastewater that has been filtered by the adsorption cylinder 3 in the lower collecting box 4 through the backwash pipe 53, and flush the cylindrical activated carbon adsorption net in the adsorption cylinder 3 from top to bottom to flush out the impurities blocked in the cylindrical activated carbon adsorption net.Then it returns to the inside of another intact adsorption cylinder 3 through the reflux pipe 52, and the wastewater containing organic impurities is filtered again. After the backwash is completed, the adsorption cylinder 3 is restored to the connection with the upper concentration box 2 and the lower concentration box 4 and continues to be used. In this solution, the above is the first mode for the use of the reflux component 5. The other mode does not require the detection of the flow sensor. The reflux component 5 is rotated regularly and all the adsorption cylinders 3 are circulated to backwash, thereby improving the treatment efficiency of the adsorption cylinder 3 for organic impurities in the wastewater. This flushing does not need to be performed frequently. At the same time, backwashing is only to avoid the problem of the cylindrical activated carbon adsorption net being unable to be used normally due to blockage to a certain extent. After a period of use, it still needs to be replaced to maintain the adsorption capacity of the cylindrical activated carbon adsorption net. The fixed column 43 connects the lower concentration box 4 and the base 1, and the fixed frame 22 connects the upper concentration box 2 and the base 1. Both are to provide the reflux pipe 52 and the backwash pipe 53 with rotation space while maintaining the stability of the entire device and not causing movement interference.

[0050] The basic principles, main features and advantages of the present invention are shown and described above. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention.

[0051] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A zirconium oxide production wastewater adsorption purification process, characterized by: The treatment process comprises the following steps: (1) The wastewater is sent to the pH adjustment tank, where the alkaline chemical treatment reagent adjusts the acid concentration of the production wastewater, reduces the chloride ion concentration in the production wastewater, and thus reduces the concentration of organic pollutants; (2) After the pH adjustment is completed, the wastewater is sent to the flocculation tank, flocculant is added, and it is left to stand for a period of time. The supernatant is taken and sent to the upper concentration box. The wastewater is then sent to the six groups of adsorption cylinders through the six groups of connecting pipes and sleeves of the upper concentration box; (3) The organic impurities in the wastewater are adsorbed and treated by the cylindrical activated carbon adsorption net in the adsorption cylinder, and then sent to the interior of the lower concentration box through the inlet and outlet pipes at the bottom of the adsorption cylinder, and then discharged from the discharge pipe of the lower concentration box; (4) After the adsorption cylinder has been used for a period of time, the adsorption cylinder is separated from the sleeves of the upper and lower central boxes through the reflux assembly, and is moved outward and turned 180 degrees. The reflux pipe and backwash pipe of the reflux assembly are connected to the inlet and outlet pipes at the upper and lower ends of the adsorption cylinder; (5) The backwash pipe draws the treated water inside the lower concentration box to the top of the adsorption cylinder, and backwashes the adsorption cylinder from top to bottom. The wastewater generated by backwashing is treated by secondary adsorption by the adsorption cylinders of other groups.

2. The process for adsorption purification of zirconium oxide production wastewater according to claim 1, characterized in that: According to the connecting tube and sleeve described in step (2), the sliding sleeve of the sleeve is connected to the outer end of the connecting tube, and the two are connected by a spring. Rubber rings are provided on the top and bottom inner walls of the sleeve, and a sealing plate is fixed on the inner wall of the open end of the sleeve. The sealing plate seals the connecting tube after the sleeve moves.

3. The process for adsorption purification of zirconium oxide production wastewater according to claim 2, characterized in that: According to the reflux assembly described in step (4), the reflux assembly includes a reflux pipe and a backwash pipe. The reflux pipe and the backwash pipe are on a vertical plane and are initially located between the two groups of adsorption cylinders. They will not interfere with the normal connection between the inlet and outlet pipes at the top and bottom of the adsorption cylinders and the sleeves of the upper and lower central boxes.

4. The process for adsorption purification of zirconium oxide production wastewater according to claim 3, characterized in that: During the reflux component processing stage, the driving motor of the reflux component drives the disc, fixed rod, suction pump and reflux pipe to rotate toward the adsorption cylinder where the wastewater flow is reduced. The rotation of the reflux pipe drives the connecting plate to rotate at the same time, and the arc plate is pushed upward by the extended end of the electric push rod. The sleeve moves upward along the outer end of the connecting pipe to compress the reset spring until the sleeve is separated from the inlet and outlet pipes, and the sealing plate at the open end of the sleeve seals the connecting pipe until the bottom of the reflux pipe corresponds to the inlet and outlet pipes at the bottom of the adsorption cylinder with problems, and the upper end corresponds to the top of another group on the straight line.

5. The process for adsorption purification of zirconium oxide production wastewater according to claim 1, characterized in that: According to the adsorption cylinder structure described in step (4), side plates are rotatably installed on both sides of the adsorption cylinder through bearings, a vertical frame is fixed to the bottom of the side plate, a slide groove is opened at the position corresponding to the bottom of the vertical frame, and a driving screw is built into the slide groove. The adsorption cylinder moves outward along with the driving screw in the slide groove.

6. The process for adsorption purification of zirconium oxide production wastewater according to claim 5, characterized in that: The gear provided at the outer end of the horizontal plate of the adsorption cylinder will contact and mesh with the tooth plate and rotate after the adsorption cylinder moves outward, so that the adsorption cylinder is turned over as a whole.

7. The process for adsorption purification of zirconium oxide production wastewater according to claim 6, characterized in that: The horizontal plate of the adsorption cylinder passes through the side plate and is fixedly connected to the bearing ring, so as to maintain a horizontal arrangement. When the adsorption cylinder moves outward along with the driving screw in the slide groove, the side plate slides along the surface of the horizontal plate. At this time, the horizontal plate plays a role in limiting and guiding the side plate, thereby maintaining the stability of the adsorption cylinder when it is pushed outward.

8. The process for adsorption purification of zirconium oxide production wastewater according to claim 4, characterized in that: According to the backwashing stage described in step (5), the top of the backwashing pipe corresponds to the inlet and outlet pipe at the top of the adsorption cylinder with the problem, and the adsorption cylinder with the problem has been turned over 180 degrees. An additional water pump is installed on the swivel to draw the wastewater that has been filtered by the adsorption cylinder in the lower collection box through the backwashing pipe, and the cylindrical activated carbon adsorption net in the adsorption cylinder is flushed from top to bottom to flush out the impurities blocked in the cylindrical activated carbon adsorption net.

9. The process for adsorption purification of zirconium oxide production wastewater according to claim 1, characterized in that: According to the reflux stage described in step (5), the wastewater backwashed in the adsorption cylinder is returned to the interior of a group of adsorption cylinders corresponding to the straight line through the reflux pipe and the suction pump, the wastewater is adsorbed again, and the wastewater containing organic impurities is filtered again. After the backwash is completed, the adsorption cylinder is restored to the connection with the upper and lower collection boxes.

10. The process for adsorption purification of zirconium oxide production wastewater according to claim 2, characterized in that: The lower centralizing box is connected to the base through a fixed column, and the fixed frame is connected to the upper centralizing box and the base. Both are for providing the reflux pipe and the backwash pipe with rotation space while maintaining the stability of the entire device and not causing movement interference.

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