Metal conductive oil-removing water-purifying membrane filtering equipment

Abstract

The utility model discloses metal conductive oil-removing and water-purifying membrane filtering equipment, and belongs to the technical field of filtering equipment.The filtering equipment comprises a fixed table and an oil-removing and water-purifying tank installed on the fixed table, a pump body is arranged at the upper end of the fixed table, and the drainage end of the pump body is connected with a water inlet of the oil-removing and water-purifying tank through a sewage guide pipe; a control box is arranged on the fixing table, a water purification mechanism is arranged in the oil removal and water purification tank, the water purification mechanism comprises a fixing ring mounted in the oil removal and water purification tank, a titanium mesh is mounted on the inner side of the fixing ring, a conductive filter membrane is arranged at the lower end of the titanium mesh, and an electricity storage bin is formed in the fixing ring; the conductive organic polymer-metal conductive composite film is prepared by adopting a chemical polymerization-in-situ deposition-chemical plating technical process, and the metal conductive composite film has the unique anti-pollution and intelligent cleaning advantages besides having the removal rate of 99% or above for oil-water mixed liquid and oil-water emulsion for a long time.

Description

Technical Field

[0001] This application relates to the field of filtration equipment technology, specifically a metal conductive oil removal and water purification membrane filtration device. Background Technology

[0002] Most traditional membranes used in oily wastewater treatment are made of organic molecular materials, which have the same polarity as oil droplets. Therefore, they are prone to adsorption, causing membrane pore blockage and membrane fouling. Membrane performance usually decreases with fouling. The impact of membrane fouling on membrane performance is quite significant. Compared with the initial pure water permeate flux, it can reduce the flux by 20-40%. In severe cases, the flux can drop by more than 80%. Membrane fouling not only reduces membrane performance and oil removal rate, but also shortens the membrane's lifespan. Frequent replacement of the bottom membrane is necessary to maintain a high removal rate.

[0003] When traditional membranes become fouled, frequent cleaning of the membrane pores is necessary to improve efficiency. However, traditional cleaning methods cause significant damage to the membrane, are ineffective, result in low flux recovery, and are costly. Membranes are typically cleaned periodically, and the high cost of each cleaning makes them unaffordable for most small and medium-sized enterprises.

[0004] Therefore, this application provides a metal conductive oil removal and water purification membrane filtration device to solve the above problems. Summary of the Invention

[0005] This application provides a metal conductive oil removal and water purification membrane filtration device, which aims to solve the problems of traditional cleaning methods mentioned in the background art, which cause significant damage to the membrane, have poor effects, low membrane flux recovery, and high cleaning costs.

[0006] To achieve the above objectives, this application provides the following technical solution: a metal conductive oil removal and water purification membrane filtration device, comprising a fixed platform and an oil removal and water purification tank installed on the fixed platform, a pump body is provided at the upper end of the fixed platform, the drain end of the pump body is connected to the inlet of the oil removal and water purification tank through a sewage guide pipe, a control box is provided on the fixed platform, and a water purification mechanism is provided inside the oil removal and water purification tank.

[0007] The water purification mechanism includes a fixing ring installed inside the oil-removing water purification tank. A titanium mesh is installed on the inner side of the fixing ring, and a conductive filter membrane is provided at the lower end of the titanium mesh. An energy storage chamber is opened on the fixing ring, and a power source is installed in the energy storage chamber. A positive terminal is installed on the end of the titanium mesh near the power source, and a negative terminal is installed on the end of the conductive filter membrane near the power source. A connection hole for inserting the positive and negative terminals is opened on the fixing ring. The titanium mesh is made of TA2 industrial pure titanium and is coated with a ruthenium-iridium coating.

[0008] Preferably, the energy storage compartment is provided with conductive copper sheets for the power supply to conduct electricity, and the conductive filter membrane is plated with a nickel alloy coating to improve conductivity stability, reduce power loss, and extend the service life of the power supply.

[0009] Preferably, a cover is detachably installed on the fixing ring, a sealing seat is installed inside the energy storage compartment, the upper end of the sealing seat has a groove, and a sealing ring that is inserted into the groove is fixedly installed at the lower end of the cover, so as to achieve IP67 waterproof rating, protect the power supply and conductive system, and avoid short circuit failure.

[0010] Preferably, a rectangular waterproof block adapted to the inner frame of the sealing seat is fixedly installed at the lower end of the cover.

[0011] Preferably, a waterproof and breathable valve is installed at the upper end of the cover, and assembly holes are symmetrically opened at the upper end of the fixing ring. A fixing seat is installed opposite to the upper end of the cover, and the fixing seat is fixedly connected to the assembly hole by screws.

[0012] This filtration device uses a "chemical polymerization-in-situ deposition-chemical plating" process to prepare a conductive organic polymer-metal conductive composite membrane. In addition to maintaining a long-term removal rate of over 99% for oil-water mixtures and oil-water emulsions, this metal conductive composite membrane also has unique advantages in anti-fouling and intelligent cleaning.

[0013] This filtration device features innovative metallization surface modification, which endows the modified membrane with superhydrophilicity above water and superoleophobicity underwater. Under the combined action of an external electric field, the modified membrane exhibits enhanced antifouling properties, ideal flux, excellent rejection rate, and better antifouling ability. Attached Figure Description

[0014] Figure 1 A schematic diagram of a metal conductive oil removal and water purification membrane filtration device;

[0015] Figure 2 A structural schematic diagram of the front cross-section of the oil-removing water purification tank;

[0016] Figure 3 This is a schematic diagram of the fixed ring structure;

[0017] Figure 4 A schematic diagram of the cross-section of the fixing ring section;

[0018] Figure 5 This is a schematic diagram of the structure at the bottom of the cover.

[0019] In the picture:

[0020] 1. Fixed platform; 2. Oil-removing and purified water tank; 3. Sewage pipe; 4. Pump body; 5. Control box; 6. Water purification mechanism; 61. Fixing ring; 611. Assembly hole; 612. Sealing seat; 613. Power supply; 614. Groove; 615. Connection hole; 62. Titanium mesh; 621. Positive terminal; 63. Conductive filter membrane; 631. Negative terminal; 64. Cover; 641. Sealing ring; 642. Rectangular waterproof block; 65. Screw; 66. Waterproof and breathable valve. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] This embodiment provides a metal conductive oil removal and water purification membrane filtration device, such as... Figure 1-5 As shown, the filtration device includes a fixed platform 1 and an oil-removing and water-purifying tank 2 installed on the fixed platform 1. A pump body 4 is provided at the upper end of the fixed platform 1. The drain end of the pump body 4 is connected to the inlet of the oil-removing and water-purifying tank 2 through a sewage pipe 3. A control box 5 is provided on the fixed platform 1. A water purification mechanism 6 is provided inside the oil-removing and water-purifying tank 2.

[0023] The water purification mechanism 6 includes a fixing ring 61 installed inside the oil-removing water purification tank 2. A titanium mesh 62 is installed on the inner side of the fixing ring 61. A conductive filter membrane 63 is provided at the lower end of the titanium mesh 62. An energy storage chamber is provided on the fixing ring 61. A power supply 613 is installed in the energy storage chamber. A positive terminal 621 is installed at the end of the titanium mesh 62 near the power supply 613. A negative terminal 631 is installed at the end of the conductive filter membrane 63 near the power supply 613. A connection hole 615 is provided on the fixing ring 61 for inserting the positive terminal 621 and the negative terminal 631.

[0024] Specifically, by applying a small current of 2V through an external auxiliary electric field, microbubbles can be spontaneously generated on the membrane surface. The generated bubbles not only serve to separate emulsified oil and water, but also, combined with the repulsive effect of the auxiliary electric field, prevent oil droplets from adhering to and contaminating the membrane, greatly improving the membrane's antifouling properties and extending its lifespan. After 15 minutes of chemical plating, the composite metal membrane exhibits a metallic luster, and the deposited Ni-Sn coating consists of particles of different diameters. These particles are well-encapsulated on each fiber and have a rough morphology.

[0025] The interior of the energy storage compartment is equipped with conductive copper sheets for the power supply 613 to conduct electricity, and the surface of the conductive filter membrane 63 is plated with a nickel alloy coating.

[0026] More specifically, by modifying the surface of an organic separation membrane with nickel metallization using a chemical nickel plating method, an electrochemical membrane separation system is constructed to achieve electro-enhanced membrane separation of oil. The metal layer on the surface greatly improves hydrophilicity, increases membrane flux by 3 times, and isolates the substrate from oil contact, extending membrane life by 2 times. The activation cost required for preparation is low, the product is safe and stable, and the oil-water mixture removal rate reaches 99%.

[0027] The system that uses in-situ electroflotation combined with metal membrane to treat oily wastewater with high emulsified oil content can combine the advantages of both, solve the problems of poor flux and poor selective separation of commercial membranes, and achieve high retention while improving membrane flux.

[0028] The conductive copper sheet inside the energy storage compartment serves as an electrode carrier, stably transmitting the electrical energy of the power source 613 to the positive terminal 621 and the negative terminal 631. The surface of the conductive copper sheet is plated with silver.

[0029] A cover 64 is detachably installed on the fixing ring 61. A sealing seat 612 is installed inside the energy storage compartment. A groove 614 is provided at the upper end of the sealing seat 612. A sealing ring 641 that is inserted into the groove 614 is fixedly installed at the lower end of the cover 64.

[0030] Furthermore, the cover 64 is press-fitted with the groove 614 of the sealing seat 612 via the sealing ring 641, forming the first waterproof barrier. The rectangular waterproof block 642 is embedded in the inner frame of the sealing seat 612 to prevent liquid from seeping into the energy storage compartment. The sealing ring 641 is made of EPDM rubber.

[0031] A rectangular waterproof block 642 that matches the inner frame of the sealing seat 612 is fixedly installed at the lower end of the cover 64.

[0032] It should be noted that the rectangular waterproof block 642 and the sealing seat 612 form a labyrinth-like sealing structure, which extends the liquid penetration path. Combined with the radial sealing of the sealing ring 641, the double protection ensures that the energy storage compartment remains dry.

[0033] A waterproof and breathable valve 66 is installed at the upper end of the cover 64. Assembly holes 611 are symmetrically opened at the upper end of the fixing ring 61. A fixing seat is installed at the upper end of the cover 64. The fixing seat and the assembly hole 611 are fixedly connected by screws 65.

[0034] It is worth mentioning that the waterproof and breathable valve 66 balances the internal and external air pressure while preventing liquid from entering. The screw 65 fastens the cover 64 to the fixing ring 61 through the mounting hole 611 to ensure the stability of the sealing structure.

[0035] In use, by setting an energy storage chamber on the fixed ring 61 and placing the power supply 613 into the energy storage chamber, an external auxiliary electric field is formed. Applying a small current of 2V can cause micro bubbles to spontaneously generate on the membrane surface. The generated bubbles can not only separate emulsified oil and water, but also prevent oil droplets from adhering and contaminating the membrane in combination with the repulsive effect of the auxiliary electric field, greatly improving the membrane's antifouling properties and extending its life.

[0036] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A metal conductive oil removal and water purification membrane filtration device, comprising a fixed platform (1) and an oil removal and water purification tank (2) installed on the fixed platform (1), wherein a pump body (4) is provided at the upper end of the fixed platform (1), and the drain end of the pump body (4) is connected to the inlet of the oil removal and water purification tank (2) through a sewage pipe (3), a control box (5) is provided on the fixed platform (1), and a water purification mechanism (6) is provided inside the oil removal and water purification tank (2); Its features are: The water purification mechanism (6) includes a fixing ring (61) installed inside the oil-removing water purification tank (2). A titanium mesh (62) is installed on the inner side of the fixing ring (61). A conductive filter membrane (63) is provided at the lower end of the titanium mesh (62). An energy storage chamber is provided on the fixing ring (61). A power supply (613) is installed in the energy storage chamber. A positive terminal (621) is installed on the titanium mesh (62) near the power supply (613). A negative terminal (631) is installed on the conductive filter membrane (63) near the power supply (613). A connection hole (615) is provided on the fixing ring (61) for inserting the positive terminal (621) and the negative terminal (631).

2. The metal conductive oil removal and water purification membrane filtration device according to claim 1, characterized in that: The energy storage compartment is equipped with a conductive copper sheet for the power source (613) to conduct electricity, and the conductive filter membrane (63) is coated with a nickel alloy coating.

3. The metal conductive oil removal and water purification membrane filtration device according to claim 2, characterized in that: A cover (64) is detachably installed on the fixing ring (61), and a sealing seat (612) is installed inside the energy storage compartment. A groove (614) is provided at the upper end of the sealing seat (612), and a sealing ring (641) that is inserted into the groove (614) is fixedly installed at the lower end of the cover (64).

4. The metal conductive oil removal and water purification membrane filtration device according to claim 3, characterized in that: A rectangular waterproof block (642) adapted to the inner frame of the sealing seat (612) is fixedly installed at the lower end of the cover (64).

5. The metal conductive oil removal and water purification membrane filtration device according to claim 4, characterized in that: A waterproof and breathable valve (66) is installed on the upper end of the cover (64), and assembly holes (611) are symmetrically opened on the upper end of the fixing ring (61). A fixing seat is installed on the upper end of the cover (64) and the fixing seat is fixedly connected to the assembly hole (611) by screws (65).

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