Industrial wastewater treatment filter material preparation device and method

Abstract

The invention relates to an industrial wastewater treatment filter material preparation device and method in the technical field of filter material preparation, and the industrial wastewater treatment filter material preparation device comprises a lifting device installed on an inclined support, a stirring frame is installed at the movable end of the lifting device, an auxiliary material adding device for auxiliary material feeding is installed on the stirring frame, and a mixing cylinder is installed on the inclined support; the mixing drum comprises a dry mixing drum for dry mixing of powder and a wet mixing drum for wet mixing of materials; the dry mixing barrel comprises a lower barrel body rotationally connected to the inclined support, an air conveying shaft is connected between the lower barrel body and the inclined support, the outer end of the lower barrel body is fixedly connected with an annular air guide structure comprising a plurality of airflow nozzles and at least one exhaust valve, and the wet mixing barrel comprises an upper barrel body matched with the stirring blades. The phase interference in the dry-wet mixing stage is effectively isolated, the combination of the filter material and the chambering material is effectively ensured through the dry mixing of the dry mixing cylinder, and the forming quality of the microporous structure of the formed filter material is easily ensured.

Description

Technical Field

[0001] The present invention relates to a device and method for preparing filter material for industrial wastewater treatment, and in particular to a device and method for preparing filter material for industrial wastewater treatment applied in the technical field of filter material preparation. Background Art

[0002] Industrial and municipal wastewater treatment, specifically how to recycle and reuse various types of wastewater, is a crucial issue for ecological development and environmental protection. Currently, domestic wastewater treatment primarily utilizes physical and chemical treatment, chemical treatment, and biological treatment. Physical and chemical treatment methods, such as filtration, adsorption, and coagulation, primarily treat high-concentration wastewater.

[0003] Chinese invention patent CN104785017B discloses a high-temperature resistant filter material, a device containing the high-temperature resistant filter material, and a method for manufacturing the product. The invention relates to a high-temperature resistant filter material composed of four layers of fabric. By studying the product structure, component ratios, and processing technology, the invention optimizes the design of a new product solution, resulting in superior performance.

[0004] The specification of Chinese invention patent CN106582927B discloses a device for preparing anthracite filter material. The invention provides a device for preparing anthracite filter material for sewage treatment, including a first rotating shaft, a small pulley, a rack, a connecting rod, a fixed pulley, a first pull wire, a motor, a first winding wheel, a top plate, a cam, a first mounting seat, a second rotating shaft, etc.; the invention achieves the effects of uniform crushing, easy operation, and low workload, and the important role played by this equipment is not only good crushing effect, but also improved work efficiency and high safety.

[0005] The existing filter media have separated adsorption and filtration functions, which makes it difficult to produce the dual effects of adsorption and filtration at the same time. In addition, the powder mixing uniformity during filter media preparation is low, which easily leads to uneven pore distribution of the filter media, thereby affecting the filter media molding quality. Summary of the Invention

[0006] In view of the above-mentioned existing technologies, the technical problem to be solved by the present invention is that the existing filter material has separated adsorption and filtration functions, which makes it difficult to produce the dual effects of adsorption and filtration at the same time. In addition, the powder mixing uniformity is low during the preparation of the filter material, which easily leads to uneven distribution of the filter material pores, thereby affecting the quality of the filter material molding.

[0007] To solve the above problems, the present invention provides an industrial wastewater treatment filter material preparation device and method, comprising a lifting device mounted on an inclined bracket, a stirring frame mounted on the movable end of the lifting device, and an auxiliary material feeder mounted on the stirring frame for feeding auxiliary materials. The device is characterized in that: the stirring frame includes a bracket body, one end of which is mounted with a stirring blade driven to rotate by a motor; a mixing drum is mounted on the inclined bracket, and the mixing drum includes a dry mixing drum for dry mixing of powders and a wet mixing drum for wet mixing of materials;

[0008] The dry mixing drum includes a lower cylinder rotatably connected to an oblique bracket, an air delivery shaft connected between the lower cylinder and the oblique bracket, an annular air guide structure including multiple air flow nozzles and at least one exhaust valve fixedly connected to the outer end of the lower cylinder, the air flow nozzles are used to input air into the lower cylinder, and a stepper motor and an air pump are installed at the lower end of the oblique bracket. The stepper motor and the air pump are used to drive the air delivery shaft to rotate and supply air to the air delivery shaft respectively;

[0009] The wet mixing drum includes an upper drum that matches the stirring blades. The bottom end of the upper drum is fixedly connected to a sealing seat that matches the lower drum. A movable guide filter tube is inserted in the middle of the sealing seat. An electric push rod is connected between the bottom end of the guide filter tube and the sealing seat. A discharge hole is provided at the upper end of the guide filter tube. A filter ring is connected to the bottom end of the guide filter tube. The guide filter tube is used to guide the material in the dry mixing drum into the upper drum. One end of the bracket body is fixedly connected to a sealing cover that matches the upper drum.

[0010] In the above-mentioned industrial wastewater treatment filter material preparation device, it is easy to achieve uniform mixing and rapid addition of ultrafine powder, fiber and pore-enlarging agent.

[0011] As a further improvement of the present application, the guide filter tube includes a material input section connected to the movable end of the electric push rod, a material output section movably connected to the material input section, a socket matching the material output section is provided on the sealing seat, an electric telescopic rod for the movement of the material output section is installed in the material input section, and a sealing cover plate matching the socket is connected to the top of the material output section.

[0012] As a further improvement of the present application, a feeding window is provided on the sealing cover, and a plurality of evenly distributed locking columns are connected to the outer end of the sealing cover, the locking columns including docking columns and an electromagnetic latch at the top of the docking columns;

[0013] The upper outer end of the upper cylinder is fixedly connected with a plurality of docking seats matching the locking columns. The docking seats are provided with slots matching the docking columns. The slots are fixedly connected with limit blocks matching the rotating blocks.

[0014] As a further improvement of the present application, the auxiliary material adder includes at least one storage tank, an atomizing nozzle is installed on the sealing cover, the atomizing nozzle is connected to the output end of the storage tank through a conduit, and a flow control valve is installed at the output end of the storage tank.

[0015] As another improvement of the present application, the annular air guiding structure includes an air guiding ring connected to the lower cylinder body. A plurality of air flow nozzles are all communicated with the air guiding ring, and the output ends of the plurality of air flow nozzles all face the central axis of the lower cylinder body.

[0016] As a supplement to another improvement of the present application, the inclined support includes a movable plate fixedly connected to the dry mixing cylinder, and a rotating shaft is connected between the movable plate and the edge of the inclined support. An auxiliary tilting device for driving the movable plate to rotate is installed inside the inclined support. One end of the inclined support is connected with an auxiliary platform, and a buffer block matching the wet mixing cylinder is installed on the auxiliary platform.

[0017] As a supplement to another improvement of the present application, the stepping motor is installed on the movable plate, the air pump is installed at the bottom of the inclined support, and the output end of the air pump is connected with an electric telescopic tube matching the air delivery shaft. A one-way air valve capable of docking with the electric telescopic tube is installed at the input end of the air delivery shaft.

[0018] A filter material preparation method applied to an industrial wastewater treatment filter material preparation device. The specific preparation method includes:

[0019] S1. Equipment adjustment: The lifting device lowers the stirring frame, the sealing cover closes the wet mixing cylinder, the external air delivery equipment is docked with the annular air guiding structure, and the feeding equipment matches the feeding port on the dry mixing cylinder;

[0020] S2. Dry mixing preprocessing: The pretreated concave pasture powder raw material and the pore-expanding material are jointly put into the dry mixing cylinder through the feeding pipe; the air pump and the external air delivery equipment are started, and air flows are synchronously input into the air delivery shaft and the annular air guiding structure. Under the action of the air flow, the mixed materials are mixed for 15 - 20 minutes until the laser scattering monitoring shows that the uniformity is above 95%; the dry mixing is completed;

[0021] S3. After the dry mixing is completed, the electric push rod pushes the guiding filter tube to rise, opens the material channel, and the air flow-assisted dry mixed materials are input into the wet mixing cylinder through the guiding filter tube. After closing the channel, it returns to the original position; the external air delivery equipment is disconnected from the annular air guiding structure, and the feeding equipment leaves and closes the feeding port;

[0022] S4. Wet mixing treatment: The active material is put into the wet mixing cylinder, and then the auxiliary material adder atomizes and sprays the acid solution through the atomizing nozzle. The stirring blades rotate at a low speed of 60 - 100 revolutions per minute and stir for 5 - 10 hours, while maintaining the temperature at 25 - 30 °C;

[0023] S5. The wet mixing cylinder 4 is heated to the set temperature by an external heating device, and at the same time, the stirring speed is increased to 200 - 300 revolutions per minute, and the constant temperature reaction is carried out for 1.5 hours;

[0024] S6. Water washing treatment: The auxiliary material adder sprays deionized water until the pH value reaches 8. When spraying, the temperature is maintained at 60 °C, and the stirring is carried out at 60 - 80 revolutions per minute;

[0025] At S7, the final lifting device raises the stirring frame, the auxiliary dumping device is activated, the wet mixing drum tilts 45° to pour materials into the feeding port of the dehydration device. After dehydration by the dehydration device, granulation is carried out using a granulator to obtain granular filter media.

[0026] As another improvement of the present application, the pretreatment method of palygorskite powder raw materials includes: sorting and purifying the original palygorskite ore, then crushing and column grinding, and after air separation and screening, acid activation and thermal activation are carried out in sequence to obtain palygorskite powder materials;

[0027] After the palygorskite powder materials are treated by the activation process, they are added to an 8% diluted acid solution at a ratio of 1:1.5. After soaking for 24 hours, it is heated to 95°C, kept at a constant temperature, stirred for 1.5 h, the excess water is filtered out, washed to a pH value of 8, dried at 135°C, crushed, and 1% alkyl modifier is added for water bath modification. After modification, washing, filtering and drying are carried out in sequence to obtain the target palygorskite powder raw materials.

[0028] As a supplement to another improvement of the present application, 30 - 48 parts of palygorskite powder raw materials are used, and the pore-expanding materials include: 20 - 25 parts of wood chips, 10 - 16 parts of calcium carbonate, and 9 - 21 parts of stearic acid; the active materials include: 7 - 11 parts of graphite and 12 - 20 parts of iron oxide.

[0029] In summary, this solution realizes the automatic zoning mixing of raw materials, effectively isolates the phase interference in the dry and wet mixing stages, and through dry mixing in the dry mixing drum, effectively ensures the combination of the filter media and the pore-expanding materials, is easy to ensure the quality of the microporous structure formation of the formed filter media, and is easy to improve the homogenization level of the porosity of the filter media. The prepared adsorption filter media can be applied to sewage filtration and heavy metal adsorption treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional view of the preparation device for the first and second embodiments of the present application;

[0031] Figure 2 It is a side view of the preparation device for the first and second embodiments of the present application;

[0032] Figure 3 It is a three-dimensional view when the wet mixing drum of the first and second embodiments of the present application is driven by the stirring frame to rise;

[0033] Figure 4 It is a cross-sectional view at the mixing drum of the first and second embodiments of the present application;

[0034] Figure 5 It is Figure 4 the structural schematic diagram at A in

[0035] Figure 6Schematic diagram of the air flow path for the first and second embodiments of the present application;

[0036] Figure 7 Flow chart of the preparation method for the second embodiment of the present application.

[0037] Explanation of the reference numerals in the figure:

[0038] 1. Lifting device; 2. Stirring frame; 21. Bracket main body; 22. Stirring blade; 23. Locking column; 3. Dry mixing cylinder; 31. Lower cylinder body; 32. Air conveying shaft; 33. Annular air guiding structure; 4. Wet mixing cylinder; 41. Upper cylinder body; 42. Sealing seat; 43. Guiding filter pipe; 431. Material input section; 432. Material output section; 433. Electric telescopic rod; 5. Auxiliary material adder. Specific embodiments

[0039] The following will describe in detail the two embodiments of the present application with reference to the accompanying drawings.

[0040] The first embodiment:

[0041] Figures 1-6 As shown, an industrial wastewater treatment filter material preparation device includes a lifting device 1 installed on an inclined bracket. The movable end of the lifting device 1 is installed with a stirring frame 2. An auxiliary material adder 5 for feeding auxiliary materials is installed on the stirring frame 2. The stirring frame 2 includes a bracket main body 21, and a stirring blade 22 driven by a motor to rotate is installed at one end of the bracket main body 21; an inclined bracket is installed with a mixing cylinder, and the mixing cylinder includes a dry mixing cylinder 3 for dry mixing of powder materials and a wet mixing cylinder 4 for wet mixing of materials;

[0042] The dry mixing cylinder 3 includes a lower cylinder body 31 rotatably connected to the inclined bracket. An air conveying shaft 32 is connected between the lower cylinder body 31 and the inclined bracket. The outer end of the lower cylinder body 31 is fixedly connected with an annular air guiding structure 33 including a plurality of air nozzles and at least one exhaust valve. A feeding port sealed by a sealing door is provided on the lower cylinder body 31, and the feeding port is located above the annular air guiding structure 33;

[0043] The annular air guide structure 33 includes an air guide ring connected to the lower cylinder 31, and an exhaust valve is installed on the air guide ring. The exhaust valve is used to exhaust when the air pressure in the lower cylinder 31 is greater than a set value. Multiple air flow nozzles are connected to the air guide ring, and the output ends of the multiple air flow nozzles are all facing the central axis of the lower cylinder 31. The air flows output by the multiple air flow nozzles and the air flows output by the air transmission shaft 32 converge in the middle of the lower cylinder 31; a pipeline docking seat is provided on the air guide ring, and a one-way valve is installed in the pipeline docking seat for docking with an external air supply device. In this solution, a suitable controllable and separable pipeline docking device in the existing technology is selected from the technology in this field to dock the external air supply device with the pipeline docking seat to form a passage; after the dry mixing cylinder 3 completes the mixing of the powder materials, the external air supply device needs to be completely separated from the pipeline docking seat to avoid blocking the rotation of the dry mixing cylinder 3;

[0044] The air flow nozzle is used to input air flow into the lower cylinder 31. A stepper motor and an air pump (not shown) are installed at the lower end of the inclined bracket. The stepper motor and the air pump are used to drive the air delivery shaft 32 to rotate and supply air to the air delivery shaft 32 respectively. Those skilled in the art can select suitable stepper motors and air pumps in the prior art for installation.

[0045] The dry mixing drum 3 mixes the powder materials uniformly and then outputs them through the combined action of the air flow input by the air delivery shaft 32 and the air flow input by the air flow nozzle. The mixing principle is similar to the fluidization effect of air flow.

[0046] The inclined bracket includes a movable plate fixedly connected to the dry mixing drum 3, and a rotating shaft is connected between the movable plate and the edge of the inclined bracket. An auxiliary dumping device for driving the movable plate to rotate is installed in the inclined bracket. One end of the inclined bracket is connected to an auxiliary platform, and a buffer block matching the wet mixing drum 4 is installed on the auxiliary platform; the auxiliary dumping device adopts the existing technology, and a person skilled in the art selects a suitable auxiliary dumping device in the existing technology for installation, such as a robotic arm.

[0047] The stepper motor is mounted on the movable plate, and a transmission structure is connected between the power output end of the stepper motor and the gas transmission shaft 32. A person skilled in the art can select a suitable transmission structure in the prior art to set it;

[0048] The air pump is installed at the bottom of the inclined bracket, and the output end of the air pump is connected to an electric telescopic tube that matches the air delivery shaft 32. The input end of the air delivery shaft 32 is installed with a one-way air valve that can be docked with the electric telescopic tube; those skilled in the art use a suitable electric telescopic tube in the prior art to install it, so that when the air delivery shaft 32 is fixed, the electric telescopic tube can be extended to dock with the air delivery shaft 32, and before the movable plate is driven to move, the electric telescopic tube can be retracted and separated from the air delivery shaft 32.

[0049] The wet mixing drum 4 includes an upper drum body 41 that matches the stirring blades 22. A sealing seat 42 that matches the lower drum body 31 is fixedly connected to the bottom end of the upper drum body 41. A movable guiding filter pipe 43 is inserted in the middle of the sealing seat 42. An electric push rod is connected between the bottom end of the guiding filter pipe 43 and the sealing seat 42. A discharge hole is provided at the upper end of the guiding filter pipe 43. A filter ring is connected to the bottom end of the guiding filter pipe 43. The guiding filter pipe 43 is used to introduce the materials in the dry mixing drum 3 into the upper drum body 41. One end of the support main body 21 is fixedly connected with a sealing cover that matches the upper drum body 41.

[0050] The guiding filter pipe 43 includes a material input section 431 connected to the movable end of the electric push rod. A material output section 432 is movably connected to the material input section 431. A jack that matches the material output section 432 is provided on the sealing seat 42. An electric telescopic rod 433 for the movement of the material output section 432 is installed in the material input section 431. A sealing cover plate that matches the jack is connected to the top end of the material output section 432. The electric push rod pushes the guiding filter pipe 43 to rise in the sealing seat 42, and the electric telescopic rod 433 in the material input section 431 pushes the material output section 432 to move upward along the jack, opening the material channel.

[0051] When the electric push rod pulls the guiding filter pipe 43 to descend, the material output section 432 moves downward along the jack under the action of the electric telescopic rod 433, closing the material channel.

[0052] A feeding window is arranged on the sealing cover. A plurality of uniformly distributed locking columns 23 are connected to the outer end of the sealing cover. The locking column 23 includes a docking column, and an electromagnetic plug pin is provided at the top end of the docking column.

[0053] A plurality of docking seats that match the locking columns 23 are fixedly connected to the outer end of the upper part of the upper drum body 41. A slot that matches the docking column is provided on the docking seat, and a limit block that matches the rotating block is fixedly connected in the slot.

[0054] The auxiliary material adding device 5 includes at least one storage tank. An atomizing nozzle is installed on the sealing cover. The atomizing nozzle is connected to the output end of the storage tank through a conduit. A flow control valve is installed at the output end of the storage tank.

[0055] The inclined support includes a movable plate fixedly connected to the dry mixing drum 3, and a rotating shaft is connected between the movable plate and the edge of the inclined support. An auxiliary tilting device for driving the movable plate to rotate is installed in the inclined support. One end of the inclined support is connected with an auxiliary platform, and a buffer block that matches the wet mixing drum 4 is installed on the auxiliary platform.

[0056] Before the operation of this solution, the lifting device 1 drives the stirring frame 2 to descend, so that the stirring blades 22 enter the wet mixing drum 4, and the sealing cover closes the opening of the wet mixing drum 4. An exhaust pipe is also installed on the sealing cover.

[0057] During operation, the air pump supplies air to the air delivery shaft 32, and the external air delivery device is docked with the annular air guiding structure 33 and supplies air to the air flow nozzles. The air flow enters the dry mixing cylinder 31 through the air flow nozzles and the air delivery shaft 32, driving the powder materials in the lower cylinder 31 to tumble and mix, achieving the effect of uniform mixing; at this time, the dry mixing cylinder 3 remains fixed; the materials in the dry mixing cylinder 31 enter the wet mixing cylinder 4 through the guiding filter pipe 43; after the materials enter the wet mixing cylinder 4, the air flow is discharged through the exhaust pipe, and the materials are stored in the wet mixing cylinder 4;

[0058] When it is detected that the material accumulation amount in the wet mixing cylinder 4 reaches the set value or when all the materials in the dry mixing cylinder 31 enter the wet mixing cylinder 4, the driving guiding filter pipe 43 descends to close the material passage;

[0059] Then the external air delivery device is separated from the annular air guiding structure 33, and then the stepping motor drives the air delivery shaft 32 to rotate. At this time, the dry mixing cylinder 3 drives the wet mixing cylinder 4 to rotate;

[0060] At the same time, the motor drives the stirring blades 22 to rotate to stir and mix the materials in the wet mixing cylinder 4; during the stirring process, the storage tank of the auxiliary material adder 5 transports the auxiliary materials to the atomizing nozzles through the conduit, the flow control valve controls the flow rate of the auxiliary materials, and the auxiliary materials are evenly sprayed on the materials in the wet mixing cylinder 4 through the atomizing nozzles to achieve wet mixing of the materials;

[0061] After mixing is completed, the lifting device 1 drives the stirring frame 2 to rise. Subsequently, the auxiliary tilting device drives the movable plate to rotate, driving the overall inclination of the mixing cylinder. At this time, the mixed materials in the wet mixing cylinder 4 are poured out to complete the preparation of the mixed materials.

[0062] The second implementation method:

[0063] Figure 7 It shows a filter material preparation method applied to an industrial wastewater treatment filter material preparation device. The specific preparation method includes:

[0064] S1. Equipment adjustment. The lifting device 1 lowers the stirring frame 2, the sealing cover closes the wet mixing cylinder 4, the external air delivery device is docked with the annular air guiding structure 33, and the feeding device matches the feeding port on the dry mixing cylinder 3;

[0065] S2. Dry mixing preprocessing; before processing, 30 - 48 parts of pretreated concave pasture powder raw materials and the pore-expanding materials are jointly put into the dry mixing cylinder 3 through the feeding pipe;

[0066] The pretreatment method of the concave pasture powder raw materials includes: sorting and purification of palygorskite ore (palygorskite is subjected to ultrafine purification treatment, palygorskite purity > 90%, particle size < 8μm), then crushing and column grinding, and after air separation and screening, acid activation and thermal activation are carried out in sequence to obtain the concave pasture powder material;

[0067] After the concave pasture powder material is treated by the activation process, it is added to an 8% diluted acid solution at a ratio of 1:1.5. After soaking for 24 hours, it is heated to 95 °C, kept at a constant temperature, stirred for 1.5 h, the excess water is filtered out, washed until the pH value is 8, dried at 135 °C, pulverized, and 1% alkyl modifier is added for water bath modification. After modification, it is washed, filtered, and dried in sequence to obtain the target concave pasture powder raw material;

[0068] The pore-expanding material includes: 20-25 parts of wood chips, 10-16 parts of calcium carbonate, and 9-21 parts of stearic acid;

[0069] During dry mixing preprocessing, start the air pump and external gas transmission equipment, and synchronously input airflows into the air transmission shaft 32 and the annular air guiding structure 33. Under the action of the airflows, the mixed materials are mixed for 15-20 minutes until the laser scattering monitoring shows that the uniformity is above 95% (a laser scattering particulate sensor is set in the dry mixing cylinder 3 for detection); the dry mixing is completed;

[0070] S3, after the dry mixing is completed, the electric push rod pushes the guiding filter tube 43 to rise, opens the material channel, and the air-assisted dry mixed materials are input into the wet mixing cylinder 4 through the guiding filter tube 43. After closing the channel, it is reset; the external gas transmission equipment is disconnected from the annular air guiding structure 33, and the feeding equipment leaves and closes the feeding port;

[0071] S4, wet mixing treatment, put the active material into the wet mixing cylinder 4, and then the auxiliary feeder 5 atomizes and sprays the acid solution (sulfuric acid or hydrochloric acid) through the atomizing nozzle. The stirring blade 22 rotates at a low speed of 60-100 revolutions per minute and stirs for 5-10 hours while maintaining the temperature at 25-30 °C; the active material includes: 7-11 parts of graphite and 12-20 parts of iron oxide

[0072] S5, heat the wet mixing cylinder 4 to the set temperature through an external heating device, and at the same time increase the stirring speed to 200-300 revolutions per minute and carry out a constant temperature reaction for 1.5 hours;

[0073] S6, water washing treatment, the auxiliary feeder 5 sprays deionized water and washes until the pH value is 8 (a pH sensor is set in the wet mixing cylinder 4 for monitoring). During spraying, maintain the temperature at 60 degrees Celsius and stir at 60-80 revolutions per minute;

[0074] S7, finally, the lifting device 1 lifts the stirring frame 2, the auxiliary dumping device is started, the wet mixing cylinder 4 is tilted 45° to pour the material into the feeding port of the dehydration device, dehydrated through the dehydration device, and then granulated by a granulator to obtain the granular filter material.

[0075] In the preparation method of this embodiment, after the pore-expanding agent is gelated, it occupies space. After heat treatment, after volatilization or transpiration, pores of various specifications are generated, increasing the number of macropores, mesopores, and micropores of the concave material with developed pore structure. In particular, the number of micropores increases, expanding the surface area, enhancing the adsorption function, and having low chemical pollution;

[0076] The concave powder raw material of this solution undergoes an acid-base synergistic catalytic reaction and shape-selective catalytic cracking with a molecular sieve to obtain a large surface area, pore volume, and activity. At the same time, the concentration of the acid solvent is controlled to obtain the optimal cation exchange capacity, causing the precipitation of cations to increase the internal cavities in the microscopic octahedron, increasing the microvoids, and enhancing the surface activity.

[0077] The filter material obtained in this solution can be made into different shapes and porosities according to requirements. After drying and roasting (the temperature needs to be controlled at about 600 °C), and then cooling, it becomes an efficient adsorption filter material, a filter material that can both adsorb and filter and is applied to sewage treatment, which can effectively adsorb heavy metals in sewage and is easy to reduce the biochemical oxygen demand and chemical oxygen demand in sewage.

[0078] In summary, the filter material preparation device of this solution realizes the automatic partition mixing of raw materials, effectively isolates the phase interference in the dry-wet mixing stage, and through dry mixing in the dry mixing cylinder 3, effectively ensures the combination of the filter material and the pore-expanding material, is easy to ensure the quality of the microporous structure formation of the formed filter material, and is easy to improve the homogenization level of the filter material porosity. The prepared adsorption filter material can be applied to sewage filtration and heavy metal adsorption treatment.

[0079] Combined with the current actual needs, the above-mentioned embodiment adopted in this application, the protection scope is not limited to this. Within the knowledge scope of those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An industrial wastewater treatment filter media preparation device, comprising a lifting device (1) installed on an inclined bracket, wherein a stirring frame (2) is installed at the movable end of the lifting device (1), and an auxiliary material adder (5) for adding auxiliary materials is installed on the stirring frame (2), and it is characterized in that: The stirring frame (2) includes a bracket main body (21), and a stirring blade (22) driven to rotate by a motor is installed at one end of the bracket main body (21); a mixing cylinder is installed on the inclined bracket, and the mixing cylinder includes a dry mixing cylinder (3) for dry mixing of powder materials and a wet mixing cylinder (4) for wet mixing of materials; The dry mixing cylinder (3) includes a lower cylinder body (31) rotatably connected to the inclined bracket, and a feeding port is provided on the lower cylinder body (31). An air delivery shaft (32) is connected between the lower cylinder body (31) and the inclined bracket. An annular air guiding structure (33) including a plurality of air nozzles and at least one exhaust valve is fixedly connected to the outer end of the lower cylinder body (31). The air nozzles are used to input air into the lower cylinder body (31). A stepping motor and an air pump are installed at the lower end of the inclined bracket. The stepping motor and the air pump are respectively used to drive the rotation of the air delivery shaft (32) and supply air to the air delivery shaft (32); The wet mixing cylinder (4) includes an upper cylinder body (41) matching the stirring blade (22). A sealing seat (42) matching the lower cylinder body (31) is fixedly connected to the bottom end of the upper cylinder body (41). A movable guiding filter tube (43) is inserted in the middle of the sealing seat (42). An electric push rod is connected between the bottom end of the guiding filter tube (43) and the sealing seat (42). A discharge hole is opened at the upper end of the guiding filter tube (43). A filter ring is connected to the bottom end of the guiding filter tube (43). The guiding filter tube (43) is used to guide the materials in the dry mixing cylinder (3) into the upper cylinder body (41); A sealing cover matching the upper cylinder body (41) is fixedly connected to one end of the bracket main body (21).

2. The preparation device of an industrial wastewater treatment filter medium according to claim 1, characterized in that: The guiding filter tube (43) includes a material input section (431) connected to the movable end of the electric push rod. A material output section (432) is movably connected to the material input section (431). A jack matching the material output section (432) is opened on the sealing seat (42). An electric telescopic rod (433) for the movement of the material output section (432) is installed in the material input section (431). A sealing cover plate matching the jack is connected to the top end of the material output section (432).

3. The preparation device of an industrial wastewater treatment filter medium according to claim 1, characterized in that: A feeding window is provided on the sealing cover. A plurality of uniformly distributed locking columns (23) are connected to the outer end of the sealing cover. The locking column (23) includes a docking column, and an electromagnetic plug is provided at the top end of the docking column; A plurality of docking seats matching the locking columns (23) are fixedly connected to the outer end of the upper part of the upper cylinder body (41). A slot matching the docking column is opened on the docking seat, and a limit block matching the rotating block is fixedly connected in the slot.

4. An industrial wastewater treatment filter material preparation device according to claim 1, characterized in that: The auxiliary material adding device (5) includes at least one storage tank. An atomizing nozzle is installed on the sealing cover. The atomizing nozzle is connected to the output end of the storage tank through a conduit. A flow control valve is installed at the output end of the storage tank.

5. The preparation device for industrial wastewater treatment filter media according to claim 1, characterized in that: The annular air guiding structure (33) includes an air guiding ring connected to the lower cylinder body (31). A plurality of the air nozzles are all communicated with the air guiding ring, and the output ends of the plurality of air nozzles all face the central axis of the lower cylinder body (31).

6. The preparation device for industrial wastewater treatment filter media according to claim 1, characterized in that: The inclined support includes a movable plate fixedly connected to the dry mixing cylinder (3), and a rotating shaft is connected between the movable plate and the edge of the inclined support. An auxiliary tilting device for driving the movable plate to rotate is installed inside the inclined support. One end of the inclined support is connected to an auxiliary platform, and a buffer block matching the wet mixing cylinder (4) is installed on the auxiliary platform.

7. An industrial wastewater treatment filter material preparation device according to claim 6, characterized in that: The stepping motor is installed on the movable plate, the air pump is installed at the bottom of the inclined support, and the output end of the air pump is connected to an electric telescopic tube matching the air delivery shaft (32). A one-way air valve that can be docked with the electric telescopic tube is installed at the input end of the air delivery shaft (32).

8. A filter material preparation method applied to the filter material preparation device according to any one of claims 1-7, characterized in that: The specific preparation method includes: S1. Equipment adjustment: The lifting device (1) lowers the stirring frame (2), the sealing cover closes the wet mixing cylinder (4), the external air delivery equipment is docked with the annular air guiding structure (33), and the feeding equipment matches the feeding port on the dry mixing cylinder (3). S2. Dry mixing preprocessing: The pretreated concave pasture powder raw material and the hole expanding material are jointly input into the dry mixing cylinder (3) through the feeding pipe; the air pump and the external air delivery equipment are started, and airflows are synchronously input into the air delivery shaft (32) and the annular air guiding structure (33). Under the action of the airflows, the mixed materials are mixed for 15 - 20 minutes until the laser scattering monitoring shows that the uniformity is above 95%; the dry mixing is completed. S3. After the dry mixing is completed, the electric push rod pushes the guiding filter tube (43) to rise, opens the material channel, and the air-assisted dry mixed materials are input into the wet mixing cylinder (4) through the guiding filter tube (43). After closing the channel, it returns to the original position; the external air delivery equipment is disconnected from the annular air guiding structure (33), and the feeding equipment leaves and closes the feeding port. S4. Wet mixing treatment: The active material is input into the wet mixing cylinder (4), and then the auxiliary material adder (5) atomizes and sprays the acid solution through the atomizing nozzle. The stirring blade (22) rotates at a low speed of 60 - 100 revolutions per minute and stirs for 5 - 10 hours, while maintaining the temperature at 25 - 30 °C. S5. The wet mixing cylinder (4) is heated to the set temperature by an external heating device, and at the same time, the stirring speed is increased to 200 - 300 revolutions per minute, and the constant temperature reaction is carried out for 1.5 hours. S6. Water washing treatment: The auxiliary material adder (5) sprays deionized water until the pH value reaches 8. During the spraying, the temperature is maintained at 60 °C, and the stirring is carried out at 60 - 80 revolutions per minute. S7. Finally, the lifting device (1) raises the stirring frame (2), the auxiliary tilting device is started, the wet mixing cylinder is tilted at 45° to pour the materials into the feeding port of the dehydration device, and after dehydration by the dehydration device, granulation is carried out using a granulator to obtain granular filter media.

9. A filter media preparation method for an industrial wastewater treatment filter media preparation device according to claim 8, characterized in that: The pretreatment method of the concave pasture powder raw material includes: sorting and purifying the palygorskite raw ore, then crushing and column grinding, air separation and screening, and then carrying out acid activation and thermal activation in sequence to obtain the concave pasture powder material. After the concave pasture powder material is treated by the activation process, it is added to an 8% diluted acid solution at a ratio of 1∶1.5, soaked for 24 hours, heated to 95 °C, kept at a constant temperature, stirred for 1.5 h, the excess water is filtered out, washed until the pH value reaches 8, dried at 135 °C, crushed, and 1% alkyl modifier is added for water bath modification. After modification, washing, filtering and drying are carried out in sequence to obtain the target concave pasture powder raw material.

10. A method for preparing filter media for an industrial wastewater treatment filter media preparation device according to claim 9, characterized in that: 30-48 parts of the concave pasture powder raw material are used. The pore-expanding material includes: 20-25 parts of wood chips, 10-16 parts of calcium carbonate, and 9-21 parts of stearic acid; the active material includes: 7-11 parts of graphite and 12-20 parts of iron oxide.

Images