A device for treating wastewater from cleaning with nano magnetic beads

Abstract

This utility model provides a device for treating wastewater from nano-magnetic bead cleaning, relating to the field of nano-magnetic bead cleaning wastewater treatment. It includes an L-shaped filtration channel comprising a vertical section and a horizontal section. A crystallization filter assembly is installed within the vertical section, and two sets of membrane filter assemblies are installed along the length of the horizontal section. These two sets of membrane filter assemblies are used for coarse filtration and fine filtration, respectively. This nano-magnetic bead cleaning wastewater treatment device, by incorporating the crystallization filter assembly and the two-stage membrane filter assembly, effectively removes fine particles, some colloids, and some pollutants adsorbed on particles from the wastewater. The two-stage membrane filter assembly intercepts tiny particles, most large organic molecules, viruses, etc., significantly improving wastewater quality and reducing environmental pollution. This application can also be applied to other laboratory wastewater.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology for cleaning nano-magnetic beads, specifically a device for treating wastewater from cleaning nano-magnetic beads. Background Technology

[0002] Nanomagnetic beads refer to small magnetic particles whose size is suitable to be measured in nanometers, generally 1-100 nanometers. These magnetic beads have a very special kind of magnetism called superparamagnetism, that is, they have a strong magnetic response in an external magnetic field, and the magnetism of the magnetic particles disappears immediately after the magnetic field is removed.

[0003] During the production and use of magnetic beads, they need to be cleaned to ensure normal subsequent use. The solution used to clean the magnetic beads contains some components that can pollute the environment. Therefore, the wastewater after cleaning cannot be discharged directly and needs to be treated to meet the discharge standards before it can be discharged.

[0004] During the cleaning process of nano-magnetic beads, chemical reagents are often used to remove impurities and adjust surface properties. The wastewater after cleaning contains organic solvents (such as ethanol and ethylene glycol) and cannot be discharged directly without treatment, otherwise it will pollute the aquatic environment, affect the survival of aquatic organisms, and bring environmental and emission compliance risks.

[0005] Therefore, it is necessary to perform preliminary filtration on the wastewater after cleaning to reduce environmental damage. Based on this, this case came into being. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies, this invention provides a nano-magnetic bead cleaning wastewater treatment device, which solves the problems mentioned in the background section.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution: a nano-magnetic bead cleaning wastewater treatment device, comprising an L-shaped filtration channel, the filtration channel comprising a vertical section tube and a horizontal section tube, wherein a crystal filtration assembly is disposed in the vertical section tube, and two sets of membrane filtration assemblies are disposed in the horizontal section tube along its length direction, the two sets of membrane filtration assemblies being used for coarse filtration and fine filtration, respectively.

[0010] Preferably, the membrane filtration assembly includes a filter membrane and a support frame for fixing the filter membrane. The filter membrane in the upstream membrane filtration assembly is a microfiltration membrane, and the filter membrane in the downstream membrane filtration assembly is an ultrafiltration membrane.

[0011] Preferably, the horizontal tube has a slot vertically provided for the insertion of a support frame, and a limiting plate that can cover the slot is rotatably provided on the horizontal tube.

[0012] Preferably, the bottom of the slot is vertically slidably fitted with a top block, and a spring is provided between the top block and the bottom of the slot.

[0013] Preferably, the top of the support frame is provided with a sealing gasket whose size is slightly larger than the cross-section of the slot.

[0014] Preferably, the crystal filtration assembly includes a crystal tank for storing crystals, a hanging frame is provided around the top outer edge of the crystal tank, and a supporting edge for hanging the hanging frame is provided inside the vertical tube.

[0015] Preferably, handles are provided on both sides of the top of the crystallization tank.

[0016] Preferably, the inlet end of the vertical section pipe is connected to a sealed pressurization assembly, which includes a pressure-resistant sealed feed tank. The top of the feed tank is equipped with an air interface, a pressure monitoring element, a safety pressure relief valve, and a rupture disc. The side wall of the feed tank is equipped with a level gauge. The wastewater is sequentially forced into the crystallization filter assembly and the two-stage membrane filter assembly by the pressure stabilization effect formed by the air introduced into the feed tank.

[0017] (III) Beneficial Effects

[0018] This invention provides a device for treating wastewater from cleaning with nano-magnetic beads. It has the following beneficial effects:

[0019] 1. This nano-magnetic bead cleaning wastewater treatment device, by setting up a crystallization filter component and a two-stage membrane filter component, can effectively remove fine particles, some colloids, and some pollutants adsorbed on particles in the wastewater. The two-stage membrane filter component can intercept tiny particles, most of the large molecular organic matter, viruses, etc. in the wastewater, which can greatly improve the wastewater quality and reduce environmental pollution. Attached Figure Description

[0020] Figure 1 This is an isometric view of the overall external structure of this utility model;

[0021] Figure 2 This is a disassembly diagram of the crystal filtration assembly of this utility model;

[0022] Figure 3 This is a half-sectional plan view of the present invention;

[0023] Figure 4 This is a disassembly diagram of the membrane filtration assembly of this utility model.

[0024] In the diagram: 1 vertical section pipe, 2 horizontal section pipe, 3 connecting plate, 4 connecting pipe, 5 bolt, 6 membrane filter assembly, 7 crystallizer tank, 8 hanging frame, 9 supporting edge, 10 screw hole, 11 slot, 12 limiting plate, 13 top block, 14 spring, 15 handle, 61 supporting frame, 62 filter membrane, 63 sealing gasket. Detailed Implementation

[0025] This utility model provides a device for treating wastewater from cleaning with nano-magnetic beads, such as... Figure 1-4 As shown, the filter includes an L-shaped filtration channel, comprising a vertical section 1 and a horizontal section 2. Connecting plates 3 are installed at the inlet and outlet of each section. Connecting plates 3 have connecting pipes 4 for connecting wastewater inlet and outlet pipes. The connecting plates 3 are connected to the vertical section 1 and horizontal section 2 by bolts 5. Specifically, the vertical section 1 and horizontal section 2 have screw holes 10 for the bolts 5 to be screwed into, similar to the connection principle of a flange.

[0026] A crystal filtration assembly is installed inside the vertical section pipe 1. It is used for the preliminary filtration of wastewater.

[0027] like Figure 2-3 As shown, the crystallizer filter assembly includes a crystallizer tank 7 for storing crystals. The bottom of the crystallizer tank 7 has dense through holes, and a hanging frame 8 is provided around the top outer edge of the crystallizer tank 7. A supporting edge 9 for hanging the hanging frame 8 is provided inside the vertical section tube 1. Handles 15 are provided on both sides of the top of the crystallizer tank 7. When it is necessary to replace the crystals in the crystallizer tank 7, the support plate 3 on the vertical section tube 1 can be removed, and then the crystallizer tank 7 can be pulled out for replacement.

[0028] According to the filtration requirements, sand particles of the corresponding particle size are placed in the crystallization tank 7 to form a filter layer. Wastewater flows through the sand filter layer from top to bottom, which can effectively remove fine particles, some colloids, and some pollutants adsorbed on the particles in the wastewater.

[0029] like Figure 3-4 As shown, two sets of membrane filter components are arranged along the length of the transverse tube 2, which are used for coarse filtration and fine filtration, respectively.

[0030] The membrane filtration assembly includes a filter membrane 62 and a support frame 61 for fixing the filter membrane 62. The filter membrane 62 in the upstream membrane filtration assembly is a microfiltration membrane, and the filter membrane 62 in the downstream membrane filtration assembly is an ultrafiltration membrane.

[0031] Microfiltration membranes can be made of materials such as polyvinylidene fluoride (PVDF) and polyethersulfone (PES). The pore size of microfiltration membranes is generally around 0.1-10 micrometers. They can trap magnetic nanoparticles, as well as some large molecules and colloids, effectively removing tiny particles from wastewater and further improving its clarity. However, microfiltration membranes are prone to clogging and require regular replacement.

[0032] Ultrafiltration membranes can be made of polysulfone, polyethersulfone, or polyacrylonitrile. Ultrafiltration membranes have smaller pore sizes, typically between 0.05 and 0.1 micrometers, and can remove most large organic molecules, viruses, etc., further purifying wastewater and significantly improving water quality.

[0033] To further ensure the stable passage of nano-magnetic bead cleaning wastewater through the ultrafiltration membrane (pore size 0.05–0.1 μm), this invention adds a sealed pressurization assembly to the inlet end of the vertical pipe 1, providing the necessary pressure for filtration through air pressure stabilization. The sealed pressurization assembly includes a pressure-resistant sealed feed tank, with an air inlet, pressure monitoring element, safety relief valve, and rupture disc at its top. The feed tank is connected to the inlet of the vertical pipe 1 and is used to temporarily store the nano-magnetic bead cleaning wastewater to be treated. The air inlet is located at the top of the feed tank to introduce air into the top cavity of the tank. The pressure monitoring element is located at the top of the feed tank to monitor the internal air pressure in real time. The safety relief valve and rupture disc are respectively installed at the top of the feed tank to automatically release pressure when the internal pressure exceeds a set upper limit, ensuring operational safety. A level gauge is used to monitor the liquid level of the wastewater in the feed tank. The feed tank is made of corrosion-resistant materials (such as PVDF, PTFE or 316L stainless steel), and is compatible with acidic, alkaline and some organic solvent wastewater, making it widely applicable.

[0034] During operation, the feed tank is sealed and pressurized after air is introduced through the air inlet. The wastewater is forced into the vertical pipe 1 by the air pressure and passes through the crystal filtration assembly, microfiltration membrane assembly and ultrafiltration membrane assembly in sequence to achieve continuous and stable filtration.

[0035] By providing a controllable pressure of 1–4 bar through air pressurization, the transmembrane pressure difference requirements of microfiltration and ultrafiltration membranes can be met, thus ensuring that wastewater can pass smoothly through the ultrafiltration membrane. Air pressurization avoids the shear force and spark risks associated with mechanical pumps, offering high safety and making it particularly suitable for treating wastewater containing organic solvents or flammable components.

[0036] By configuring a safety relief valve and a rupture disc, the safety and reliability of operation are further improved.

[0037] In order to allow the filter membrane 62 to be replaced, a slot 11 is vertically provided on the horizontal section tube 2 for the support frame 61 to be inserted. A limiting plate 12 is rotatably provided on the horizontal section tube 2 to cover the slot 11. When the support frame 61 is inserted into the slot 11, the limiting plate 12 is rotated to be above the slot 11 to limit the top of the support frame 61.

[0038] To facilitate the removal of the support frame 61, a top block 13 is vertically slidable at the bottom of the slot 11, and a spring 14 is provided between the top block 13 and the bottom of the slot 11. When the top of the support frame 61 is no longer restricted, the top block 13 will push the support frame 61 upward, so that the top of the support frame 61 is exposed in the slot 11, making it easy to remove the support frame 61.

[0039] A sealing gasket 63, slightly larger than the cross-section of the slot 11, is provided at the top of the support frame 61. When the support frame 61 is inserted into the slot 11, the sealing gasket 63 at its top is squeezed and deformed against the top opening of the slot 11, which can prevent wastewater from overflowing from the horizontal section pipe 2. The sealing gasket 63 can be made of highly malleable silicone or rubber.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating wastewater from cleaning nano-magnetic beads, comprising an L-shaped filtration channel, the filtration channel comprising a vertical section (1) and a horizontal section (2), characterized in that: The vertical section tube (1) is equipped with a crystal filtration assembly, and the horizontal section tube (2) is equipped with two sets of membrane filtration assemblies along its length. The two sets of membrane filtration assemblies are used for coarse filtration and fine filtration, respectively.

2. The nano-magnetic bead cleaning wastewater treatment device according to claim 1, characterized in that: The membrane filtration assembly includes a filter membrane (62) and a support frame (61) for fixing the filter membrane (62). The filter membrane (62) in the upstream membrane filtration assembly is a microfiltration membrane, and the filter membrane (62) in the downstream membrane filtration assembly is an ultrafiltration membrane.

3. The nano-magnetic bead cleaning wastewater treatment device according to claim 2, characterized in that: The horizontal tube (2) is vertically provided with a slot (11) into which the support frame (61) can be inserted, and a limiting plate (12) that can cover the slot (11) is rotatably provided on the horizontal tube (2).

4. The nano-magnetic bead cleaning wastewater treatment device according to claim 3, characterized in that: The bottom of the slot (11) is vertically slidably fitted with a top block (13), and a spring (14) is provided between the top block (13) and the bottom of the slot (11).

5. The nano-magnetic bead cleaning wastewater treatment device according to claim 4, characterized in that: The top of the support frame (61) is provided with a sealing gasket (63) that is slightly larger than the cross-section of the slot (11).

6. The nano-magnetic bead cleaning wastewater treatment device according to claim 1, characterized in that: The crystal filtration assembly includes a crystal tank (7) for storing crystals, and a hanging frame (8) is provided on the top outer edge of the crystal tank (7). A supporting edge (9) for hanging the hanging frame (8) is provided inside the vertical tube (1).

7. The nano-magnetic bead cleaning wastewater treatment device according to claim 6, characterized in that: Handles (15) are provided on both sides of the top of the crystallization tank (7).

8. A nano-magnetic bead cleaning wastewater treatment device according to any one of claims 1-7, characterized in that: The inlet end of the vertical pipe (1) is connected to a sealed pressurization assembly. The sealed pressurization assembly includes a pressure-resistant sealed feed tank. The top of the feed tank is equipped with an air interface, a pressure monitoring element, a safety pressure relief valve, and a rupture disc. The side wall of the feed tank is equipped with a level gauge. The wastewater is sequentially pressed into the crystal filtration assembly and the two-stage membrane filtration assembly by the pressure stabilization effect formed by the air introduced into the feed tank.

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