Purification device for pollutant treatment

Abstract

The utility model discloses a pipeline wastewater treatment technical field's a kind of purification device for pollutant treatment, including pipeline, and the outer periphery of pipeline is equipped with at least one rotating drive unit, and single rotating drive unit includes: bearing, including fixed in the inner ring of pipeline outer wall and the outer ring of rotatable around pipeline center line;Permanent magnet array, including multiple permanent magnets fixed in the outer ring of bearing, and permanent magnet is spaced distribution along the outer ring of bearing circumferentially;Electromagnetic field module, it is around and is located in the outside of the outer ring of bearing, including multiple and permanent magnet one-to-one corresponding electromagnetic unit, and the magnetic field generated when electromagnetic unit energization is arranged with the same magnetic pole of corresponding permanent magnet, and drive permanent magnet rotates around pipeline center line;Pipeline inner wall is equipped with magnetic nano adsorption layer, and magnetic nano adsorption layer is attracted by permanent magnet and rotates around pipeline center line with permanent magnet synchronously.The utility model can continuously treat heavy metal in wastewater, and solve the technical problem of low processing efficiency of prior art.

Description

Technical Field

[0001] This utility model relates to the field of pipeline wastewater treatment technology, and in particular to a purification device for treating pollutants. Background Technology

[0002] With the acceleration of industrialization, wastewater generated from industrial production (such as electroplating, metallurgy, and mining) contains heavy metal pollutants such as copper, lead, zinc, and antimony ions. Therefore, efficient removal and recovery of heavy metals is a core requirement for industrial wastewater treatment.

[0003] Currently, industrial wastewater treatment mainly relies on traditional sedimentation tank processes. This involves adding agents such as sodium sulfide and sodium hydroxide to cause heavy metal ions to precipitate as sulfides or hydroxides. After settling and stratification, the accumulated sludge needs to be manually removed. However, this sedimentation reaction requires a pause (typically 2 hours per batch) before the heavy metal ions can be fully precipitated before recycling can begin, followed by a second batch of sedimentation. This wastewater treatment method cannot be continuous, resulting in low treatment efficiency. Utility Model Content

[0004] To address the problem of low processing efficiency in existing technologies, this utility model provides a purification device for treating pollutants.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A purification device for treating pollutants includes a pipe for discharging wastewater, and at least one rotary drive unit is provided around the outer periphery of the pipe. Each rotary drive unit includes:

[0007] The bearing includes an inner ring fixed to the outer wall of the pipe and an outer ring that can rotate about the center line of the pipe;

[0008] The permanent magnet array includes multiple permanent magnets fixed to the outer ring of the bearing, with the permanent magnets spaced apart circumferentially along the outer ring of the bearing;

[0009] An electromagnetic field module is arranged around the outer ring of the bearing and includes multiple electromagnetic units that correspond one-to-one with permanent magnets. When the electromagnetic unit is energized, the magnetic field generated is set opposite to the same magnetic pole of the corresponding permanent magnet, driving the permanent magnet to rotate around the center line of the pipe.

[0010] The inner wall of the pipe is equipped with a magnetic nano-adsorption layer for adsorbing heavy metals. The magnetic nano-adsorption layer is fixed in relative position to the permanent magnet. The magnetic nano-adsorption layer is attracted by the permanent magnet and rotates synchronously with the permanent magnet around the center line of the pipe.

[0011] Furthermore, it includes three rotary drive units, which are spaced apart along the centerline of the pipe.

[0012] Furthermore, the magnetic nano-adsorption layer is a modified iron oxide-based nanomaterial.

[0013] Furthermore, the electromagnetic field module includes a housing, and the electromagnetic unit is fixed on the housing. The electromagnetic unit of the electromagnetic field module is a Helmholtz coil.

[0014] Furthermore, the number of turns in a Helmholtz coil ranges from 50 to 500.

[0015] Furthermore, the number of permanent magnets is 4 to 8, which are distributed at equal intervals along the outer circumference of the bearing.

[0016] Furthermore, the bearing is a roller bearing.

[0017] Furthermore, the pipe material is PVDF, polytetrafluoroethylene, or acrylic.

[0018] Furthermore, the permanent magnet is an alloy permanent magnet or a rare earth permanent magnet.

[0019] The beneficial effects of this utility model are:

[0020] By installing a rotating drive unit outside the pipe and a magnetic nano-adsorption layer inside the pipe, the magnetic nano-adsorption layer is attracted by the magnetic force of a permanent magnet. Under the rotation of the permanent magnet, the magnetic nano-adsorption layer rotates synchronously with the permanent magnet around the center line of the pipe and is evenly distributed. When wastewater flows through the magnetic nano-adsorption layer, the magnetic nano-adsorption layer can adsorb heavy metals in the wastewater in real time. In contrast, traditional wastewater treatment methods require sedimentation tanks to hold each batch for 2 hours to allow for sedimentation, making continuous treatment impossible and resulting in low wastewater treatment efficiency. Compared with traditional wastewater treatment methods, this invention can continuously adsorb heavy metals in wastewater, thus improving wastewater treatment efficiency. Attached Figure Description

[0021] Figure 1 This is a front view of the purification device for treating pollutants according to this utility model;

[0022] Figure 2 This is a side view of the purification device for treating pollutants according to this utility model;

[0023] The diagram is labeled as follows: 1-pipe, 2-bearing, 3-permanent magnet, 4-electromagnetic unit. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the present invention will be further described below with reference to the accompanying drawings.

[0025] First, it should be stated that the technical solutions of the embodiments of this application are clearly and completely described. The described embodiments are only some of the embodiments of this application, and not a limitation of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this utility model, it should be understood that the terms "first", "second", "upper", "lower", "left", "right", "inner", "outer", "axial" or "radial" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.

[0027] Reference Figures 1 to 2 This utility model provides a purification device for treating pollutants.

[0028] like Figure 1 and Figure 2 As shown, a purification device for treating pollutants includes a pipe 1 for discharging wastewater. At least one rotary drive unit is provided around the outer periphery of the pipe 1. Each rotary drive unit includes:

[0029] The bearing 2 includes an inner ring fixed to the outer wall of the pipe 1 and an outer ring that can rotate about the center line of the pipe 1;

[0030] The permanent magnet array includes multiple permanent magnets 3 fixed to the outer ring of the bearing 2. The permanent magnets 3 are spaced apart circumferentially along the outer ring of the bearing 2. The magnetic force of the permanent magnets 3 should be able to penetrate the pipe 1 and act on the magnetic nano-adsorption layer on the inner wall of the pipe 1 to attract the magnetic nano-adsorption layer and drive it to rotate. The multiple permanent magnets 3 can be directly fixed to the outer ring of the bearing 2, or... Figure 1 As shown, multiple permanent magnets 3 are connected together by an installation structure to form a permanent magnet 3 module, and then fixed to the outer ring of the bearing 2.

[0031] The electromagnetic field module is arranged around the outer ring of the bearing 2. It includes multiple electromagnetic units 4 that correspond one-to-one with the permanent magnets 3. When the electromagnetic unit 4 is energized, the magnetic field generated is set opposite to the same magnetic pole of the corresponding permanent magnet 3. The permanent magnet 3 is driven to rotate around the center line of the pipe 1 by the repulsion of the like poles of the permanent magnet 3 by the electromagnetic unit 4.

[0032] The inner wall of the pipe 1 is provided with a magnetic nano-adsorption layer for adsorbing heavy metals. The magnetic nano-adsorption layer is fixed in relative position with the permanent magnet 3. The magnetic nano-adsorption layer is attracted by the permanent magnet 3 and rotates synchronously with the permanent magnet 3 around the center line of the pipe 1.

[0033] By installing a rotary drive unit outside pipe 1 and a magnetic nano-adsorption layer inside pipe 1, the magnetic nano-adsorption layer is attracted by the magnetic force of permanent magnet 3. Under the rotation of permanent magnet 3, the magnetic nano-adsorption layer rotates synchronously with permanent magnet 3 around the center line of pipe 1 on the inner wall of pipe 1. When wastewater flows through, heavy metal ions in the wastewater are uniformly adsorbed and purified by the magnetic nano-adsorption layer. In addition, this solution is simple to operate, the materials are easy to replace, and multiple rotary drive units can be used in combination to improve the purification level.

[0034] like Figure 1 and Figure 2 As shown, the number of rotary drive units can be one or more, and can be reasonably selected according to the wastewater treatment capacity. Each rotary drive unit corresponds to a single magnetic nano-adsorption layer. A sufficient number of rotary drive units are distributed at intervals along the centerline of pipe 1 to ensure complete adsorption of heavy metal ions in the wastewater. This scheme preferably designs three rotary drive units, which are distributed at intervals along the centerline of pipe 1. On the one hand, this can achieve a better adsorption effect, and on the other hand, three rotary drive units can reduce manufacturing costs. When the number is too large, although the adsorption effect is better, the manufacturing and maintenance costs are higher.

[0035] Regarding the number of permanent magnets 3 and electromagnetic units 4, "multiple" refers to three or more.

[0036] For the magnetic nano-adsorption layer, modified iron oxide-based nanomaterials are preferred. Alternatively, modified or unmodified Fe3O4, FeCrCo, PtCo, MnAlC, CuNiFe, or AlMnAg-based nanomaterials can be used. For the modifier, ionic modifiers (including hydrophobic and hydrophilic modifiers) are typically used.

[0037] Hydrophobic ionic modifiers include: 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imine salt (chemical formula: [Bmim][Tf2N]), 1-butyl-1-methylpyrrolidine trifluoromethanesulfonate (chemical formula: [BMPyr][TfO]), 1-(2-hydroxyethyl)-3-methylimidazolium bis(trifluoromethanesulfonyl)imine salt (chemical formula: [EmimOH][Tf2N]), 1,3-dimethylimidazolium hexafluorophosphate (chemical formula: [MMim]PF6), and 1-butyl-3-methylimidazolium p-methylbenzenesulfonate (chemical formula: [BMIm]TsO).

[0038] Hydrophilic ionic modifiers include: 1-propyl-3-methylimidazolium chloride (chemical formula: [PMIm]Cl), tetraethylammonium hydroxide (chemical formula: [N2,2,2,2]OH), 1-aminopropyl-3-methylimidazolium nitrate (chemical formula: [APMIm]NO3), 1-propylsulfonic acid-3-methylimidazolium hydrogen sulfate (chemical formula: [PrSO3HMIm]HSO4), N-hexylpyridine bromide (chemical formula: [Hpy]Br), cerium nitrate, lanthanides, β-cyclodextrin, aluminum hydroxyl, ethylenediamine, aminopropyltrimethoxysilane, 3-isocyanopropyltrimethoxysilane, 3-thiocyanopropyltriethoxysilane, etc.

[0039] The modification method is mainly room temperature equal volume impregnation, with an oscillation speed of 200-1200 rpm and a time of 30-60 min.

[0040] It should be noted that this utility model does not involve improvements to the process method. The modifier and modification method selected for modifying the magnetic nano-adsorption layer are existing technologies known to those skilled in the art.

[0041] like Figure 1 and Figure 2 As shown in the embodiment of this solution, the electromagnetic field module includes a housing, and the electromagnetic unit 4 is fixed on the housing. The electromagnetic unit 4 of the electromagnetic field module is preferably a Helmholtz coil. The Helmholtz coil can generate a highly uniform magnetic field in a specific area, and also has the characteristics of simple structure and flexible adjustment. In addition, the electromagnetic unit 4 can also be a Bitter electromagnet, a Maxwell coil, a superconducting magnet, etc. The magnetic field generated by the Helmholtz coil is set opposite to the same magnetic pole of the permanent magnet 3, so that the permanent magnet 3 rotates under the repulsive force of the Helmholtz coil.

[0042] Furthermore, to ensure the magnetic field strength generated by the Helmholtz coil, the number of turns of the Helmholtz coil is preferably 50 to 500.

[0043] In this embodiment, the number of permanent magnets 3 is 4 to 8, equidistantly distributed along the outer circumference of the bearing 2. The equidistant distribution of the permanent magnets 3 along the circumference forms a symmetrical magnetic field distribution, effectively reducing local magnetic field fluctuations and ensuring uniform coverage of magnetic field lines when the bearing 2 rotates, thus reducing torque pulsation caused by uneven magnetic field. The magnetic force of the permanent magnets 3 should be able to penetrate the pipe 1 and act on the magnetic nano-adsorption layer on the inner wall of the pipe 1 to attract the magnetic nano-adsorption layer and drive its rotation.

[0044] Furthermore, bearing 2 is a roller bearing. In addition, angular contact ball bearings, self-lubricating bearings, ceramic bearings, or thrust needle roller bearings can also be selected.

[0045] Furthermore, the material of pipe 1 is PVDF, polytetrafluoroethylene or acrylic. In addition to the above three materials, other inert materials, such as polypropylene or polyvinyl chloride, can also be selected to avoid pipe 1 reacting with wastewater and causing damage to pipe 1.

[0046] Furthermore, the permanent magnet 3 is an alloy permanent magnet or a rare earth permanent magnet. In addition, ferrite permanent magnets (ceramic permanent magnets) or intermetallic compound permanent magnets can also be selected.

[0047] Rare earth permanent magnet materials (containing rare earth elements):

[0048] Neodymium iron boron (Nd2Fe) 14 B): The main component is neodymium (Nd, a rare earth element).

[0049] Samarium cobalt (SmCo): mainly composed of samarium (Sm, a rare earth element) and cobalt.

[0050] Alloy permanent magnet materials (excluding rare earth elements): AlNiCo (with aluminum, nickel and cobalt as the main components), Cu-Ni-Fe (copper-nickel-iron), Fe-Co-Mo (iron-cobalt-molybdenum), Fe-Co-V (iron-cobalt-vanadium) or MnBi (manganese-bismuth).

[0051] In one embodiment of this solution, the present invention is applied to the purification of hydrogen sulfide toxic gas, where the hydrogen sulfide gas concentration is 3.46 mg / m³. 3 The pollutant flow velocity was 0.1 m / s, and the temperature was room temperature.

[0052] The permanent magnet 3 can be made of alloy permanent magnet material (AlNiCo) or rare earth permanent magnet material (NdFeB);

[0053] Bearing 2 is a roller bearing;

[0054] Electromagnetic unit 4 is a Helmholtz coil with 50 turns. The applied voltage is an AC voltage with a frequency of 50Hz and a voltage of 0.6V.

[0055] The outer ring of bearing 2 is provided with 4 to 8 permanent magnets 3 that are equidistantly distributed along the circumference of the outer ring;

[0056] Pipe 1 is made of inert material, so PVDF material is selected.

[0057] The electromagnetic field module includes a shell, and the electromagnetic unit 4 is fixed on the shell. The electromagnetic unit 4 of the electromagnetic field module is a Helmholtz coil. The Helmholtz coil corresponds one-to-one with the permanent magnet 3. The magnetic field generated by the Helmholtz coil is set opposite to the same magnetic pole of the permanent magnet 3.

[0058] The magnetic catalytic adsorption materials are mainly unmodified PtCo-based nanomaterials, which are purchased from the market.

[0059] Operation: Slowly introduce the hydrogen sulfide gas into pipe 1 at a speed of 0.1 m / s, and detect the gas outflow concentration at the end.

[0060] Result: The concentration of gas effluent at the end was 0.05 mg / m³. 3 The removal rate was 98.6%.

[0061] In one embodiment of this solution, the present invention is applied to the purification of SO2, NOx, and HF gases, with an SO2 gas concentration of 4.16 mg / m³. 3 The NOx gas concentration was 2.14 mg / m³. 3 The HF gas concentration was 3.54 mg / m³. 3 The pollutant flow velocity is 1 m / s and the temperature is 60℃.

[0062] Permanent magnet 3 is made of ferrite permanent magnet material;

[0063] Bearing 2 is a roller bearing;

[0064] Electromagnetic unit 4 is a Helmholtz coil with 500 turns. The applied voltage is AC voltage with a frequency of 100Hz and a voltage of 360V.

[0065] The outer ring of bearing 2 is provided with 8 permanent magnets 3 that are equidistantly distributed along the circumference of the outer ring;

[0066] Pipe 1 is made of inert material, specifically polytetrafluoroethylene (PTFE).

[0067] The electromagnetic field module includes a shell, and the electromagnetic unit 4 is fixed on the shell. The electromagnetic unit 4 of the electromagnetic field module is a Helmholtz coil. The Helmholtz coil corresponds one-to-one with the permanent magnet 3. The magnetic field generated by the Helmholtz coil is set opposite to the same magnetic pole of the permanent magnet 3.

[0068] The magnetic catalytic adsorption material is a modified iron oxide-based nanomaterial, purchased from the market. The main modifier is the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imine salt (chemical formula: [Bmim][Tf2N]). The modification method is mainly room temperature equal-volume impregnation, with an oscillation speed of 200 rpm and a time of 60 min.

[0069] Result: The concentration of SO2 gas at the terminal outlet was 0.06 mg / m³. 3 The NOx gas concentration was 0.04 mg / m³. 3 The HF gas concentration is 0.03 mg / m³. 3 .

[0070] In one embodiment of this solution, the present invention is applied to the purification of water bodies contaminated with heavy metals, with an As concentration of 3.46 mg / m³. 3 The Cr concentration was 5.31 mg / m³. 3 The pollutant flow velocity is 1 m / s and the temperature is 40℃.

[0071] Permanent magnet 3 is selected from Fe-Co-V (iron-cobalt-vanadium) alloy permanent magnet materials;

[0072] Bearing 2 is a roller bearing;

[0073] Electromagnetic unit 4 is a Helmholtz coil with 200 turns. The applied voltage is AC voltage with a frequency of 800Hz and a voltage of 220V.

[0074] The outer ring of bearing 2 is provided with 6 permanent magnets 3 that are equidistantly distributed along the circumference of the outer ring;

[0075] Pipe 1 is made of inert material, specifically acrylic.

[0076] The electromagnetic field module includes a shell, and the electromagnetic unit 4 is fixed on the shell. The electromagnetic unit 4 of the electromagnetic field module is a Helmholtz coil. The Helmholtz coil corresponds one-to-one with the permanent magnet 3. The magnetic field generated by the Helmholtz coil is set opposite to the same magnetic pole of the permanent magnet 3.

[0077] The magnetic catalytic adsorption material is a modified AlMnAg-based nanomaterial, purchased commercially. The main modifier is 3-thiocyanopropyltriethoxysilane. The modification method is mainly room temperature equal-volume impregnation with an oscillation speed of 1000 rpm for 40 minutes.

[0078] Operation: The heavy metal contaminated water was slowly introduced into pipe 1 at a speed of 0.3 m / s, and the outflow concentration was detected at the end.

[0079] Result: The concentration of As in the terminal gas effluent was 0.01 mg / m³. 3 The Cr concentration was 0.04 mg / m³. 3 .

Claims

1. A purification device for treating pollutants, comprising a pipe (1) for discharging wastewater, characterized in that, The outer periphery of the pipe (1) is provided with at least one rotary drive unit, and a single rotary drive unit includes: The bearing (2) includes an inner ring fixed to the outer wall of the pipe (1) and an outer ring that can rotate about the center line of the pipe (1); The permanent magnet array includes multiple permanent magnets (3) fixed to the outer ring of the bearing (2), and the permanent magnets (3) are distributed circumferentially along the outer ring of the bearing (2); The electromagnetic field module is arranged around the outer ring of the bearing (2) and includes multiple electromagnetic units (4) corresponding to the permanent magnets (3). When the electromagnetic unit (4) is energized, the magnetic field generated is set opposite to the same magnetic pole of the corresponding permanent magnet (3) to drive the permanent magnet (3) to rotate around the center line of the pipe (1). The inner wall of the pipe (1) is provided with a magnetic nano-adsorption layer for adsorbing heavy metals. The magnetic nano-adsorption layer is attracted by the permanent magnet (3) and rotates synchronously around the center line of the pipe (1) with the permanent magnet (3). The magnetic nano-adsorption layer is a modified iron oxide-based nanomaterial; The electromagnetic field module includes a shell, and the electromagnetic unit (4) is fixed on the shell. The electromagnetic unit (4) of the electromagnetic field module is a Helmholtz coil. The number of permanent magnets (3) is 4 to 8, and they are distributed at equal intervals along the outer circumference of the bearing (2).

2. The purification device for treating pollutants as described in claim 1, characterized in that, It includes three rotary drive units, which are spaced apart along the center line of the pipe (1).

3. The purification device for treating pollutants as described in claim 1, characterized in that, The number of turns in a Helmholtz coil ranges from 50 to 500.

4. The purification device for treating pollutants as described in claim 1, characterized in that, Bearing (2) is a roller bearing.

5. The purification device for treating pollutants as described in claim 1, characterized in that, The pipe (1) is made of PVDF, polytetrafluoroethylene or acrylic.

6. The purification apparatus for treating pollutants as described in any one of claims 1-5, characterized in that, The permanent magnet (3) is an alloy permanent magnet or a rare earth permanent magnet.

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