Zirconium oxide production wastewater adsorption purification device and method

Abstract

The present invention belongs to the technical field of wastewater adsorption and purification, and specifically is a device and method for adsorbing and purifying wastewater from zirconium oxide production, wherein the device comprises an adsorption purifier, the adsorption purifier comprises a tank body, a water inlet pipe is arranged on the top of the tank body, a water outlet pipe is arranged on the bottom of the tank body, and an adsorption component is arranged inside the tank body for adsorption and purification of wastewater passing through the tank body; the present invention arranges a flushing ring specifically for the position where the particle impurities are concentrated, so that the cleaning water flow flowing out of the flushing hole is concentrated to impact the area near the top and near the bottom of the filling area, so that the area where the zirconium oxide particle impurities are easily accumulated is dispersed by the concentrated impact, the activated carbon particles therein collide with each other, and the separation of the adhered impurities is accelerated under the shearing action of the water flow impact, and the problem of the impurities being too concentrated locally in the filling area affecting the overall passability of the adsorption layer is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater adsorption purification, in particular to a device and method for adsorbing and purifying wastewater produced by zirconium oxide. Background Art

[0002] Zirconia products are a material commonly used for cosmetic restoration of teeth, and are not only used in this regard, but also in ceramic products, refractory fibers, refractory crucibles, abrasive materials, etc. Zirconium dioxide has become an important high-temperature resistant material, ceramic insulation material and ceramic sunscreen due to its high melting point, high resistivity, high refractive index and low thermal expansion coefficient. In the production and processing of zirconia products, wastewater containing high concentrations of zirconia particles and possibly other chemicals will be generated. This wastewater usually comes from cleaning, passivation, polishing and other processes.

[0003] Zirconium dioxide wastewater is composed of impurity removal waste acid, washing wastewater, centrifugal wastewater, daily cleaning equipment wastewater, floor cleaning water, etc. generated during the production of zirconium oxide products. There are many production steps and a lot of hydrochloric acid is used, so the wastewater contains pH, hydrochloric acid, SS, chloride ions, and COD. The wastewater content is complex and the water quality is acidic, which means that zirconium dioxide wastewater cannot be discharged directly into the water body and needs to be discharged after sewage treatment process.

[0004] The commonly used physical and chemical treatment method in the treatment of zirconia product production wastewater is to use activated carbon filters and other equipment to purify high-concentration particulate impurities and suspended pollutants in the production wastewater, thereby reducing emissions and pollution to the environment. During use, the treatment personnel found that when the wastewater passes through the activated carbon layer, because the concentration of particulate impurities contained in the activated carbon layer is too high, the particulate impurities in the activated carbon layer are easily accumulated in the gap between the filter plate and the activated carbon particles, and are prone to agglomeration, causing the filter plate to become blocked, affecting the normal purification performance of the activated carbon layer, thereby increasing the cleaning frequency of the activated carbon layer and reducing the purification efficiency of the zirconia product production wastewater. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a zirconium oxide production wastewater adsorption purification device and method.

[0006] The technical solution adopted by the present invention to solve the technical problem is as follows: the present invention proposes a zirconia production wastewater adsorption purification device, comprising an adsorption purifier, the adsorption purifier comprises a tank body, the top of the tank body is provided with a water inlet pipe, the bottom of the tank body is provided with a water outlet pipe, and the tank body is provided with an adsorption component inside, for adsorption and purification of wastewater passing through the tank body;

[0007] An annular partition is vertically arranged in the middle of the tank body, and the annular partition divides the internal area of ​​the tank body into an annular purification chamber and a mounting chamber surrounded by the annular partition; a plurality of adsorption layers are arranged in the purification chamber along the vertical direction, and the adsorption layer includes two layers of limiting filter plates arranged in an upper and lower layers, and the area between the double-layer limiting filter plates is a filling area, and the filling area is filled with activated carbon adsorption material;

[0008] The top of the purification chamber is evenly provided with water distribution pipes, which are connected to the water inlet pipe; the middle part of the installation chamber is provided with a backwash water pipe, and the top of the tank body is also connected with a recovery pipe; the side wall of the annular partition is provided with annular grooves at positions corresponding to the bottom and top of the filling area, and a flushing ring is provided inside the annular groove, and the flushing ring is nested on the outside of the backwash water pipe;

[0009] The flushing ring is hollow inside to form a flushing cavity, which is communicated with the backwashing water pipe; flushing holes are evenly arranged on the side wall of the flushing cavity facing the filling area; the part of the annular partition located in the middle of the filling area is connected to the inner wall of the tank body through a connecting rod.

[0010] Preferably, a guide groove is provided on a surface of one side of the limiting filter plate facing the filling area, the guide groove corresponds to the flushing hole, and the guide groove is distributed in an annular manner around the backwash water pipe.

[0011] Preferably, the flushing ring is rotatably connected to the annular groove, and the flushing ring is rotatably connected to the backwash water pipe;

[0012] An annular through groove is arranged at the position corresponding to the side wall of the flushing chamber and the backwash water pipe, and a connecting hole is arranged at the position corresponding to the backwash water pipe and the annular through groove, so as to realize the communication between the flushing chamber and the backwash water pipe; the flushing ring is connected to a rotating component arranged inside the installation chamber, and rotates around the backwash water pipe under the action of the rotating component.

[0013] Preferably, an annular limiting groove is provided at a position of the inner wall of the tank body corresponding to the flushing ring, a limiting ring is slidably provided inside the limiting groove, and the limiting ring is connected to the corresponding flushing ring through evenly arranged flip plates.

[0014] Preferably, the cross-section of the flap plate is triangular, and the surface of the flap plate contacting the limiting filter plate is a horizontal plane, and the surface of the flap plate close to the middle area of ​​the filling area is an inclined plane.

[0015] Preferably, the connecting rod has a rectangular cross-section and extends in a vertical direction; the interior of the connecting rod is hollow to form an extension cavity, the extension cavity is connected to the backwash water pipe through an inlet hole, and cleaning holes are evenly arranged on both side surfaces of the connecting rod, and the cleaning holes are connected to the interior of the extension cavity.

[0016] Preferably, the interior of the flip plate is hollow to form a flip channel, and the flip channel is communicated with the interior of the flushing chamber; flip holes are evenly arranged on the inclined surface of the flip plate, and the flip holes are communicated with the interior of the flip channel.

[0017] Preferably, stirring plates are evenly arranged on the inclined surface of the flip plate, and the stirring plates are located in the gaps between the flip holes;

[0018] The stirring plate extends vertically toward the middle of the filling area, and the ends of the edges on both sides of the stirring plate are tapered; drainage grooves are evenly arranged on the surfaces of both sides of the stirring plate, and the drainage grooves extend along the vertical direction.

[0019] Preferably, the side wall of the limiting ring is evenly provided with through grooves, the side wall of the filling area corresponding to the through grooves is provided with a discharge port, the side wall in the middle of the filling area is provided with a feed port, and the discharge port and the feed port are both kept closed.

[0020] A method for purifying zirconium oxide production wastewater by adsorption, the purification method uses the above-mentioned purification device, and the specific steps of the purification method are:

[0021] S1: Pretreatment: firstly, alkaline chemical treatment reagents are introduced into the production wastewater in proportion to adjust the acid concentration of the production wastewater, reduce the chloride ion concentration in the production wastewater, and then reduce the concentration of organic pollutants, so as to ensure the subsequent production wastewater treatment;

[0022] S2: Flocculation treatment, pumping the production wastewater into the sedimentation tank through a pump, adding flocculation agents, and stirring to fully mix the production wastewater and flocculation agents, and then letting it stand; the suspended impurities in the production wastewater are forced to form flocs under the action of the flocculation agents, and collide and condense with each other during the sedimentation process, so that their size and mass continue to increase, and finally settle to the bottom of the sedimentation tank;

[0023] S3: Filtration treatment, the supernatant part of the production wastewater in the sedimentation tank is extracted through the water inlet pipe, and then sent to the adsorption purifier, and the wastewater is evenly dispersed to the upper area of ​​the purification chamber through the interconnected and evenly arranged water distribution pipes, and passes through multiple adsorption layers downward, and in the process of contacting with the activated carbon adsorption material in the filling area inside the adsorption layer, the suspended pollutants and particulate impurities in the wastewater are retained in the filling area;

[0024] S4: Emission detection. Finally, the wastewater flows to the bottom of the tank and flows to the outside through the outlet pipe. The purified wastewater flowing out of the outlet pipe is tested. If the test result does not meet the emission standards, it needs to be filtered repeatedly. If the test result meets the emission standards, it will be discharged normally or put into industrial production for recycling again.

[0025] The beneficial effects of the present invention are as follows:

[0026] 1. The present invention discloses a zirconium oxide production wastewater adsorption purification device and method. The present application sets a flushing ring specifically for the location where the granular impurities are concentrated, so that the cleaning water flow out of the flushing hole can penetrate into the filling area in a targeted manner, and concentrate on the impact of the areas near the top and near the bottom of the filling area, so that the areas in the gap between the activated carbon particles and the limiting filter plate where the zirconium oxide granular impurities are easily accumulated are dispersed by the concentrated impact, the activated carbon particles collide with each other, and the separation of adhered impurities is accelerated under the shearing action of the water flow impact, and the problem of the overall permeability of the adsorption layer being affected by the excessive local concentration of impurities in the filling area is reduced.

[0027] 2. The present invention discloses a device and method for purifying zirconium oxide production wastewater by adsorption. The present application realizes more reasonable use of flushing water by focusing flushing water flow to impact local locations where impurities are concentrated, thereby improving the utilization efficiency of flushing water and accelerating the fluidity of activated carbon adsorption materials inside the filling area, so that impurities accumulated in the filter holes in the limiting filter plate that may cause blockage are separated and kept unobstructed under concentrated impact, thereby improving the overall permeability of the adsorption layer and prompting impurities accumulated in the gap area to be more fully carried away by flushing water, so that the activated carbon adsorption materials are purified more fully, thereby enabling the subsequent purification process of zirconium oxide production wastewater to proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings.

[0029] Figure 1 is a three-dimensional diagram of the purification device of the present invention;

[0030] Figure 2 is a partial cross-sectional view of the purification device of the present invention;

[0031] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0032] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0033] Figure 5 is a stereogram of the flushing ring of the present invention;

[0034] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle;

[0035] Figure 7 is a cross-sectional view of the flap plate of the present invention;

[0036] Figure 8 It is a flow chart of the purification method in the present invention.

[0037] In the figure: tank body 1, water inlet pipe 11, water outlet pipe 12, annular partition 13, annular groove 131, purification chamber 14, water distribution pipe 141, installation chamber 15, backwash water pipe 16, connecting hole 161, recovery pipe 17, discharge port 18, feed port 19, adsorption assembly 2, adsorption layer 21, limiting filter plate 211, filling area 212, guide groove 213, limiting groove 214, flushing ring 22, flushing chamber 221, flushing hole 222, annular through groove 223, limiting ring 224, through groove 225, connecting rod 23, extension chamber 231, introduction hole 232, cleaning hole 233, rotating assembly 24, flip plate 25, flip channel 251, flip hole 252, stirring plate 253, drainage groove 254. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0039] Embodiment 1:

[0040] As shown in the attached figure of the specification Figure 1-Figure 8 As shown, a zirconia production wastewater adsorption purification device includes an adsorption purifier, which includes a tank body 1, a water inlet pipe 11 is arranged on the top of the tank body 1, a water outlet pipe 12 is arranged on the bottom of the tank body 1, and an adsorption component 2 is arranged inside the tank body 1 to perform adsorption and purification treatment on the wastewater passing through the tank body 1; the water inlet pipe 11 is connected to the inside of the sedimentation tank, and the supernatant part of the production wastewater after flocculation and sedimentation is pumped into the tank body 1 through a pump;

[0041] An annular partition 13 is arranged in the middle position inside the tank body 1, and the annular partition 13 divides the internal area of ​​the tank body 1 into an annular purification chamber 14 and an installation chamber 15 surrounded by the annular partition 13, and the purification chamber 14 and the installation chamber 15 are not connected; a plurality of adsorption layers 21 are arranged in the vertical direction inside the purification chamber 14, and the adsorption layer 21 includes two layers of limiting filter plates 211 arranged in an upper and lower layer, and the limiting filter plates 211 are fixedly connected to the inner wall of the tank body 1; the area between the double-layer limiting filter plates 211 is a filling area 212, and the filling area 212 is filled with activated carbon adsorption material, which is mainly composed of activated carbon particles whose particle size is smaller than the filter hole size of the limiting filter plate 211;

[0042] A water distribution pipe 141 is evenly arranged on the top of the purification chamber 14, and the water distribution pipe 141 is communicated with the water inlet pipe 11; a backwash water pipe 16 is arranged in the middle part of the installation chamber 15, and the backwash water pipe 16 is communicated with the cleaning water supply equipment, and cleaning water is sent in through a pump. The cleaning water can be a cleaning liquid specially used for cleaning activated carbon particles that have lost their activity; a recovery pipe 17 is also connected to the top of the tank body 1, and the recovery pipe 17 is communicated with the external cleaning water treatment equipment, and the recovery pipe 17 is also communicated with the water distribution pipe 141; annular grooves 131 are respectively arranged at the corresponding parts of the side wall of the annular partition 13 and the bottom and top of the filling area 212, and a flushing ring 22 is arranged inside the annular groove 131, and the flushing ring 22 is nested on the outside of the backwash water pipe 16, and the annular groove 131 is a through groove, so that the outer circular end of the flushing ring 22 installed therein faces the inside of the filling area 212, and the inner circle part is nested on the outside of the backwash water pipe 16, and the annular groove 131 is kept closed;

[0043] The flushing ring 22 is hollow inside to form a flushing cavity 221, which is connected to the backwashing water pipe 16; flushing holes 222 are evenly arranged on the side wall of the flushing pipe opposite to the filling area 212; the part of the annular partition 13 located in the middle of the filling area 212 is connected to the inner wall of the tank body 1 through a connecting rod 23. Because the annular grooves 131 on the upper and lower sides are through grooves, the part of the annular partition 13 located between the upper and lower annular grooves 131 is relatively independent. Therefore, this part is connected to the inner wall of the tank body 1 and the outer surface of the backwashing water pipe 16 through the connecting rod 23 to achieve limited fixation.

[0044] Specific working process: the supernatant of the zirconia production wastewater after flocculation and precipitation in the sedimentation tank is sent to the adsorption purifier through the water inlet pipe 11, and the suspended pollutants and fine particle impurities remaining therein can be adsorbed and purified by the activated carbon adsorption material inside the adsorption purifier;

[0045] Specifically, after the water inlet pipe 11 delivers the wastewater into the tank body 1, the wastewater is evenly dispersed to the upper area of ​​the purification chamber 14 through the evenly arranged water distribution pipes 141, and then the wastewater falls evenly inside the purification chamber 14 through the evenly arranged water distribution holes at the bottom of the water distribution pipes 141; during the downward flow, the wastewater contacts with the multiple adsorption layers 21 evenly arranged on the lower side. During the contact process, the wastewater first passes through the upper limiting filter plate 211, penetrates into the internal filling area 212, contacts with the activated carbon adsorption material inside the filling area 212, and after passing through the gap area of ​​the activated carbon adsorption material, it penetrates downward through the lower limiting filter plate 211;

[0046] In the process of wastewater passing through the filling area 212 and contacting with the activated carbon, the adsorption and filtration effect of the activated carbon particles causes the suspended pollutants and particulate impurities in the wastewater to be retained in the filling area 212, so that the wastewater passing through the adsorption layer 21 is effectively purified, and finally the wastewater flows to the bottom of the tank body 1 and flows to the outside from the outlet pipe 12; at the same time, it is necessary to detect the purified wastewater flowing out of the outlet pipe 12 to determine whether it meets the emission standards; when the discharged wastewater does not meet the emission standards and the purification device has been used for too long, it is judged that there may be too many impurities accumulated in the gaps between the activated carbon adsorption materials in the filling area 212, and the materials in the filling area 212 need to be flushed;

[0047] Close the water inlet pipe 11 and the water outlet pipe 12, and at the same time, feed cleaning water into the backwash water pipe 16, and the cleaning water flows along the backwash water pipe 16 and enters the flushing chamber 221 inside the interconnected flushing ring 22; the cleaning water in the flushing chamber 221 flows out from the flushing hole 222 on the flushing ring 22 that is directly opposite to the filling area 212, and the cleaning water contacts the activated carbon adsorption material; as the cleaning water accumulates inside the purification chamber 14, the water distribution pipe 141 pumps the cleaning water out of the top of the flushing chamber 221 into the recovery pipe 17 through the pump connected to the recovery pipe 17, and flows to the external treatment equipment; thereby, a reverse cleaning water flow from bottom to top is formed inside the tank body 1, and the reversely flowing cleaning water takes away the impurities located in the gaps between the activated carbon adsorption materials, so that the activated carbon adsorption materials are cleaned and the adsorption and purification function is restored;

[0048] In the prior art, because the wastewater passes through the adsorption layer 21 from top to bottom, the activated carbon adsorption material near the top of the filling area 212 first contacts the wastewater and adsorbs more particulate impurities. When the wastewater passes through the limiting filter plate 211 downward, it is blocked and the flow slows down, causing the particulate impurities to settle and remain at the bottom of the filling area 212 near the lower limiting filter plate 211. In addition, the particulate impurities in the gaps of the activated carbon adsorption material settle downward and are blocked when flowing to the bottom, and further accumulate at the bottom of the filling area 212.

[0049] Therefore, the present application sets flushing rings 22 specifically for the positions where the above-mentioned granular impurities are concentrated, so that the flushing rings 22 on the upper and lower sides face the top and bottom positions of the filling area 212, which are both the combined positions of the activated carbon adsorption material and the limiting filter plate 211; in this way, the cleaning water flow flowing out of the flushing hole 222 penetrates into the filling area 212 in a targeted manner, and concentrates on the impact of the filling area 212 near the top and near the bottom, so that the areas in the gap between the activated carbon particles and the limiting filter plate 211 where zirconium oxide granular impurities are easily accumulated are dispersed by the concentrated impact, and the activated carbon particles collide with each other, and accelerate the separation of the adhered impurities under the shearing action of the water flow impact, and also reduce the problem of the filling area 212 being too concentrated with impurities and affecting the overall permeability of the adsorption layer 21.

[0050] At the same time, the concentrated flushing water flow is targeted at the local locations where impurities are concentrated, so as to achieve more reasonable use of the flushing water, thereby improving the utilization efficiency of the cleaning water and accelerating the fluidity of the activated carbon adsorption material inside the filling area 212, so that the impurities accumulated in the filter holes in the limiting filter plate 211 that may cause blockage can be separated and kept unobstructed under concentrated impact, thereby improving the overall permeability of the adsorption layer 21, and also prompting the impurities accumulated in the gap area to be more fully carried away by the cleaning water, so that the activated carbon adsorption material can be purified more fully, so that the subsequent purification process of the zirconium oxide production wastewater can proceed smoothly.

[0051] Embodiment 2:

[0052] On the basis of Example 1, a guide groove 213 is provided on the surface of the limiting filter plate 211 facing the filling area 212 and at the position corresponding to the flushing hole 222; that is, the lower surface of the limiting filter plate 211 on the upper side of the filling area 212 and the upper surface of the limiting filter plate 211 on the lower side of the filling area 212 are both provided with a guide groove 213, and the guide grooves 213 are distributed in a ring around the backwash water pipe 16.

[0053] Specific working process: On the basis of the specific working process in Example 1, a guide groove 213 is set on the surface of the limiting filter plate 211 facing the filling area 212, so that the gap between the limiting filter plate 211 and the activated carbon adsorption material is increased; in this way, the cleaning water flowing out from the flushing hole 222 is prompted to further penetrate laterally along the guide groove 213 toward the gap area between the limiting filter plate 211 and the activated carbon adsorption material after flowing out, so that the flowing cleaning water can more fully act on the part of the activated carbon adsorption material where impurities are concentrated and accumulated in the gap, thereby making the part of the activated carbon with more impurity particles accumulated near the upper and lower limiting filter plates 211 in the filling area 212 concentratedly washed, and after the impurity particles are washed and dispersed, they leave the filling area 212 with the flowing cleaning water, thereby improving the purification efficiency of the activated carbon adsorption material part in the filling area 212.

[0054] Embodiment three:

[0055] On the basis of the second embodiment, the flushing ring 22 is rotatably connected to the annular groove 131, and the flushing ring 22 is rotatably connected to the backwashing water pipe 16, and an annular through groove 223 is provided at the side wall of the flushing cavity 221 corresponding to the backwashing water pipe 16, and a connecting hole 161 is provided at the backwashing water pipe 16 corresponding to the annular through groove 223, and the flushing ring 22 is connected to the rotating component 24 provided inside the mounting cavity 15, and rotates along the annular groove 131 under the action of the rotating component 24;

[0056] The rotating assembly 24 includes a ring gear disposed at the lower side of the flushing ring 22, and a driving gear is disposed at a corresponding position inside the mounting cavity 15, which are connected through a motor, and the driving gear meshes with the ring gear; thus, the motor drives the driving gear and the ring gear to rotate, thereby driving the flushing ring 22 to rotate;

[0057] An annular limiting groove 214 is provided at the position of the inner wall of the tank body 1 corresponding to the flushing ring 22, a limiting ring 224 is slidably provided inside the limiting groove 214, and a flip plate 25 is evenly provided between the limiting ring 224 and the corresponding flushing ring 22, and the flip plate 25 contacts the surface of the adjacent limiting filter plate 211.

[0058] Specific workflow: Based on the specific workflow in Example 2, since the wastewater contains a relatively high concentration of zirconium oxide processed particles, in order to prevent the partial area inside the filling area 212 from being affected by the accumulation of pollutants such as zirconium oxide particles and other impurities, a flushing ring 22 and a flip plate 25 are provided, and the rotating assembly 24 drives the flushing ring 22 and the flip plate 25 to rotate, so that the activated carbon adsorption material inside the filling area 212 is agitated, thereby accelerating the flow of activated carbon between different parts inside the filling area 212, and preventing impurity particles from accumulating too much in a local area and combining with the activated carbon adsorption raw material to form a mass;

[0059] Specifically, the rotating assembly 24 is started to rotate the flushing ring 22, so that the flushing holes 222 on the side wall of the flushing ring 22 spray out cleaning water while rotating. While expanding the flushing and purification range of the cleaning water, the flushing ring 22 also drives the flip plate 25 to rotate; the rotating flip plate 25 scrapes the activated carbon adsorption material near the limiting filter plate 211 inside the filling area 212, so that the flow is accelerated under the stirring action of the flip plate 25, thereby improving the mutual exchange of the activated carbon adsorption material between different parts inside the filling area 212; and the impact stirring action of the flip plate 25 will also cause the particulate impurities with a tendency to agglomerate accumulated in the gap area between the activated carbon adsorption material and the limiting filter plate 211 to be impacted, and refined and diffused under the impact, and separated from the adsorption layer 21 with the reverse flow of cleaning water.

[0060] Embodiment 4:

[0061] On the basis of Example 3, the cross-section of the flip plate 25 is triangular, and the surface of the flip plate 25 that contacts the limiting filter plate 211 is a horizontal plane, and the surface of the flip plate 25 close to the middle area of ​​the filling area 212 is an inclined plane; the cross-section of the connecting rod 23 is a rectangle, and the connecting rod 23 extends in the vertical direction; the interior of the connecting rod 23 is hollow to form an extension cavity 231, and the extension cavity 231 is connected to the backwash water pipe 16 through the inlet hole 232, and cleaning holes 233 are evenly arranged on the surfaces of both sides of the connecting rod 23, and the cleaning holes 233 are connected to the interior of the extension cavity 231.

[0062] Specific working process: On the basis of the specific working process in the third embodiment, when the flip plate 25 rotates with the flushing ring 22, the conical end portion located at the front side of the flip plate 25 first contacts the activated carbon adsorption material located in the gap area, and the gap between the activated carbon adsorption material and the limiting filter plate 211 is scooped up, and then slides along the inclined surface on the upper side of the flip plate 25; after the activated carbon material slides along the inclined surface, it is guided to flow toward the middle part of the filling area 212, thereby strengthening the flow exchange trend of the activated carbon material inside the filling area 212 in the vertical direction; while the activated carbon adsorption material located in the gap of the flip plate 25 is rotated by the flip plate 25, it is also accelerated to flow vertically under the guidance of the inclined surface of the flip plate 25, so that the material exchange and mutual stirring effect inside the filling area 212 is further strengthened, reducing the situation where the material is agglomerated due to the combination of more impurity particles and affects the filtering and purification effect;

[0063] Furthermore, the connecting rod 23 located in the middle of the filling area 212 fixes the portion of the annular partition 13 located between the upper annular grooves 131. At the same time, the connecting rod 23 extending vertically limits the rotation tendency of the activated carbon adsorption material portion located in the middle of the filling area 212 under the action of the upper and lower flip plates 25, so that the flow directions of the activated carbon adsorption materials at different positions in the vertical direction are different, which further promotes the interlaced and full mixing of the activated carbon adsorption materials at different positions, so that the activated carbon particles collide with each other and are sheared by the impact of the cleaning water flow, which accelerates the shedding of the impurity particles adsorbed on the activated carbon; and the cleaning water flowing into the extension cavity 231 from the cleaning hole 233 causes the activated carbon adsorption material in the middle position to be flushed from the inside to the outside by the cleaning water, and the adhering impurities are accelerated to be taken away;

[0064] The stirring action of the flip plate 25 is mainly concentrated on the top and bottom areas where more particulate impurities accumulate, and the activated carbon adsorption materials that are stirred and rotated are mainly parts of the top and bottom areas of the filling area 212. In this way, it is only necessary to concentrate the flip plate 25 to stir the materials in some areas on the upper and lower sides of the filling area 212, so as to improve the cleaning efficiency inside the filling area 212 while avoiding the large resistance load that the flip plate 25 will encounter on the entire activated carbon adsorption materials in the filling area 212, thereby increasing the probability of damage to the flip plate 25, and further promoting the flow difference in different parts of the filling area 212, so that the parts that may be clustered are dispersed from each other, and also promoting the purification process of the activated carbon adsorption materials in the filling area 212 to proceed more smoothly.

[0065] Embodiment five:

[0066] On the basis of the fourth embodiment, the interior of the flip plate 25 is hollow to form a flip channel 251, and flip holes 252 are evenly arranged on the inclined portion of the flip plate 25, and the flip holes 252 are communicated with the interior of the flip channel 251; stirring plates 253 are evenly arranged on the inclined portion of the flip plate 25, and the stirring plates 253 are located in the gap between the flip holes 252, and the stirring plates 253 extend vertically toward the middle position of the filling area 212, and the ends of the edge portions on both sides of the stirring plate 253 are conical; drainage grooves 254 are evenly arranged on the surfaces of both sides of the stirring plate 253, and the drainage grooves 254 extend vertically.

[0067] Specific working process: On the basis of the specific working process in Example 4, when the turning plate 25 rotates to act on the activated carbon material near the limiting filter plate 211 inside the filling area 212, the stirring plate 253 is set so that the part of the activated carbon material that is stirred and turned up flows along the inclined part of the turning plate 25 and contacts the stirring plates 253 evenly set on the inclined part; the mutual impact occurring during the contact process causes the part of the activated carbon adsorption material that has a tendency to agglomerate to be crushed and refined under the impact of the conical end of the stirring plate 253, exposing the impurities wrapped inside the agglomerated part; then the turning hole 252 on the inclined part of the turning plate 25 located in the gap part of the stirring plate 253 sprays out the cleaning water flow, which flows upward along the drainage grooves 254 on the two side surfaces of the stirring plate 253 and impacts the crushed and refined agglomerated part in the gap part, so that the impurities bound to the agglomerated part of the crushed activated carbon adsorption material are further refined and separated under the impact, and are accelerated to separate under the action of the flowing cleaning water.

[0068] Embodiment six:

[0069] On the basis of Example 5, the side wall of the limiting ring 224 is evenly provided with through grooves 225, the side wall of the filling area 212 corresponding to the through grooves 225 is provided with a discharge port 18, and the side wall of the middle part of the filling area 212 is provided with a feed port 19, and both the discharge port 18 and the feed port 19 remain closed.

[0070] Specific workflow: Based on the specific workflow in Example 4, in order to solve the problem that the activated carbon adsorption material inside the filling area 212 is ineffective due to excessive adhesion of impurities, the tank body 1 needs to be opened for overall replacement, which is complicated and time-consuming, affecting the purification processing efficiency; therefore, the activated carbon particles inside the filling area 212 can be partially replaced through the discharge port 18 and the feed port 19;

[0071] Specifically, during the backwashing process, the discharge port 18 can be opened, so that when the through groove 225 on the limiting ring 224 coincides with the discharge port 18 during the rotation of the limiting ring 224, part of the activated carbon adsorption material mixed with the washing water can flow out through the through groove 225 and the discharge port 18. In this process, because the discharge port 18 is located in the filling area 212 near the upper and lower limiting filter plates 211, the content of granular impurities is relatively high, and the proportion of invalid activated carbon is large. The centrifugal effect generated by the rotating flip plate 25 makes the granular impurities with higher density and the activated carbon with heavier overall texture due to more adhered impurities flow outward, and then can flow out through the through groove 225 and the discharge port 18, so that the activated carbon with more concentrated impurities in the filling area 212 can be removed;

[0072] The feed port 19 can then be opened, and the activated carbon particles mixed with cleaning water can be injected under pressure through a pump to allow them to enter the middle part of the filling area 212. They are then evenly mixed into the interior of the filling area 212 under the stirring action of the flip plate 25, dispersed evenly, and the removed activated carbon adsorption material is replenished. In this way, partial replacement of the internal activated carbon adsorption material is achieved, effectively extending the working cycle of the adsorption purification of the present application.

[0073] Embodiment seven:

[0074] On the basis of the above embodiment, a method for purifying zirconium oxide production wastewater by adsorption is provided. The purification method uses the above purification device. The specific steps of the purification method are as follows:

[0075] S1: Pretreatment: firstly, alkaline chemical treatment reagents are introduced into the production wastewater in proportion to adjust the acid concentration of the production wastewater, reduce the chloride ion concentration in the production wastewater, and then reduce the concentration of organic pollutants, so as to ensure the subsequent production wastewater treatment;

[0076] S2: Flocculation treatment, pumping the production wastewater into the sedimentation tank through a pump, adding flocculation agents, and stirring to fully mix the production wastewater and flocculation agents, and then letting it stand; the suspended impurities in the production wastewater are forced to form flocs under the action of the flocculation agents, and collide and condense with each other during the sedimentation process, so that their size and mass continue to increase, and finally settle to the bottom of the sedimentation tank;

[0077] S3: Filtration treatment, the supernatant part of the production wastewater in the sedimentation tank is extracted through the water inlet pipe 11, and then sent to the adsorption purifier, and the wastewater is evenly dispersed to the upper area of ​​the purification chamber 14 through the interconnected and evenly arranged water distribution pipes 141, and passes through multiple adsorption layers 21 downward, and in the process of contacting with the activated carbon adsorption material in the filling area 212 inside the adsorption layer 21, the suspended pollutants and particulate impurities in the wastewater are retained in the filling area 212;

[0078] S4: Discharge detection, finally the wastewater flows to the bottom of the tank 1 and flows to the outside through the outlet pipe 12; the purified wastewater flowing out of the outlet pipe 12 is tested, and if the test result does not meet the discharge standard, repeated filtration treatment is required. If the test result meets the discharge standard, it is discharged normally or put into industrial production for recycling again.

[0079] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A zirconia production wastewater adsorption purification device, comprising an adsorption purifier, the adsorption purifier comprising a tank body (1), a water inlet pipe (11) is arranged at the top of the tank body (1), a water outlet pipe (12) is arranged at the bottom of the tank body (1), and an adsorption component (2) is arranged inside the tank body (1) for adsorption and purification of wastewater passing through the tank body (1); Features: An annular partition (13) is vertically arranged in the middle of the tank body (1), and the annular partition (13) divides the internal area of ​​the tank body (1) into an annular purification chamber (14) and a mounting chamber (15) surrounded by the annular partition (13); a plurality of adsorption layers (21) are arranged in the vertical direction inside the purification chamber (14), and the adsorption layer (21) includes two upper and lower layers of limiting filter plates (211), and the area between the two layers of the limiting filter plates (211) is a filling area (212), and the filling area (212) is filled with activated carbon adsorption material; The top of the purification chamber (14) is evenly provided with water distribution pipes (141), and the water distribution pipes (141) are connected to the water inlet pipe (11); the middle part of the installation chamber (15) is provided with a backwash water pipe (16), and the top of the tank body (1) is also connected with a recovery pipe (17); the side wall of the annular partition (13) and the bottom and top positions of the filling area (212) are both provided with annular grooves (131), and a flushing ring (22) is provided inside the annular groove (131), and the flushing ring (22) is nested on the outside of the backwash water pipe (16); The flushing ring (22) is hollow inside to form a flushing cavity (221), and the flushing cavity (221) is in communication with the backwashing water pipe (16); flushing holes (222) are evenly arranged at positions on the side wall of the flushing cavity (221) facing the filling area (212); a portion of the annular partition (13) located in the middle of the filling area (212) is connected to the inner wall of the tank body (1) via a connecting rod (23); The flushing ring (22) is rotatably connected to the annular groove (131), and the flushing ring (22) is rotatably connected to the backwash water pipe (16); An annular through groove (223) is provided at a portion of the side wall of the flushing cavity (221) corresponding to the backwashing water pipe (16), and a communicating hole (161) is provided at a portion of the backwashing water pipe (16) corresponding to the annular through groove (223), so as to realize communication between the flushing cavity (221) and the backwashing water pipe (16); the flushing ring (22) is connected to a rotating assembly (24) arranged inside the mounting cavity (15), and rotates around the backwashing water pipe (16) under the action of the rotating assembly (24); An annular limiting groove (214) is provided at a position of the inner wall of the tank body (1) corresponding to the flushing ring (22), a limiting ring (224) is slidably provided inside the limiting groove (214), and the limiting ring (224) is connected to the corresponding flushing ring (22) via evenly arranged flip plates (25); The cross section of the flap plate (25) is triangular, and the surface of the flap plate (25) in contact with the limiting filter plate (211) is a horizontal plane, and the surface of the flap plate (25) close to the middle area of ​​the filling area (212) is an inclined plane.

2. A zirconium oxide production wastewater adsorption purification device according to claim 1, characterized in that: A guide groove (213) is provided on a surface of the limiting filter plate (211) facing the filling area (212), the guide groove (213) corresponds to the flushing hole (222), and the guide groove (213) is distributed in an annular shape around the backwash water pipe (16).

3. The zirconia production wastewater adsorption purification device according to claim 1, characterized in that: The connecting rod (23) has a rectangular cross-section and extends in a vertical direction. The connecting rod (23) is hollow inside to form an extension cavity (231), and the extension cavity (231) is connected to the backwash water pipe (16) through an inlet hole (232). Cleaning holes (233) are evenly arranged on both side surfaces of the connecting rod (23), and the cleaning holes (233) are connected to the inside of the extension cavity (231).

4. A zirconium oxide production wastewater adsorption purification device according to claim 3, characterized in that: The flip plate (25) is hollow inside to form a flip channel (251), and the flip channel (251) is communicated with the inside of the flushing chamber (221); flip holes (252) are evenly arranged on the inclined surface of the flip plate (25), and the flip holes (252) are communicated with the inside of the flip channel (251).

5. A zirconium oxide production wastewater adsorption purification device according to claim 4, characterized in that: Stirring plates (253) are evenly arranged on the inclined surface of the flipping plate (25), and the stirring plates (253) are located in the gaps between the flipping holes (252); The stirring plate (253) extends vertically toward the middle position of the filling area (212), and the ends of the edges on both sides of the stirring plate (253) are conical; drainage grooves (254) are evenly arranged on the surfaces of both sides of the stirring plate (253), and the drainage grooves (254) extend along the vertical direction.

6. A zirconium oxide production wastewater adsorption purification device according to claim 5, characterized in that: The side wall of the limiting ring (224) is evenly provided with through grooves (225), the side wall of the filling area (212) corresponding to the through grooves (225) is provided with a discharge port (18), and the side wall of the middle part of the filling area (212) is provided with a feed port (19), and the discharge port (18) and the feed port (19) are both kept closed.

7. A method for purifying zirconium oxide production wastewater by adsorption, the purification method using the purification device described in any one of claims 1 to 6, characterized in that: The specific steps of the purification method are: S1: Pretreatment: firstly, alkaline chemical treatment reagents are introduced into the production wastewater in proportion to adjust the acid concentration of the production wastewater, reduce the chloride ion concentration in the production wastewater, and then reduce the concentration of organic pollutants, so as to ensure the subsequent production wastewater treatment; S2: Flocculation treatment, pumping the production wastewater into the sedimentation tank through a pump, adding flocculation agents, and stirring to fully mix the production wastewater and flocculation agents, and then letting it stand; the suspended impurities in the production wastewater are forced to form flocs under the action of the flocculation agents, and collide and condense with each other during the sedimentation process, so that their size and mass continue to increase, and finally settle to the bottom of the sedimentation tank; S3: Filtration treatment, the supernatant part of the production wastewater in the sedimentation tank is extracted through the water inlet pipe (11), and then sent to the adsorption purifier, and the wastewater is evenly distributed to the upper area of ​​the purification chamber (14) through the interconnected and evenly arranged water distribution pipes (141), and passes downward through multiple adsorption layers (21). In the process of contacting with the activated carbon adsorption material in the filling area (212) inside the adsorption layer (21), the suspended pollutants and particulate impurities in the wastewater are retained in the filling area (212); S4: Discharge detection, the wastewater finally flows to the bottom of the tank (1) and flows to the outside through the outlet pipe (12); the purified wastewater flowing out of the outlet pipe (12) is tested, and if the test result does not meet the discharge standard, repeated filtering treatment is required; if the test result meets the discharge standard, it is discharged normally or put into industrial production for recycling again.

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