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High efficiency and continuous oil-water separation device

An oil-water separation device, high-efficiency technology, applied in the direction of liquid separation, separation method, grease/oily substance/floating matter removal device, etc., can solve the problems of only batch treatment of wastewater, limited membrane technology application, poor anti-pollution ability, etc. , to achieve the effect of easy to expand production, low cost and fast separation speed

Inactive Publication Date: 2017-01-11
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the membrane materials currently available for oil-water separation have shortcomings such as low flux, slow processing speed, poor anti-pollution ability, and can only treat wastewater in batches. They can only be used for small-scale oil-water separation, which greatly limits membrane technology. Application in actual wastewater treatment and crude oil spill accidents

Method used

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  • High efficiency and continuous oil-water separation device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038]Place the 50-mesh stainless steel mesh in the acetone and ethanol solutions in turn, and ultrasonicate for 10 minutes; then place it in water, and continue ultrasonicating for 10 minutes to remove the oil stains on the surface of the stainless steel mesh. The washed stainless steel mesh was placed in an oven and dried at 120°C for 2 hours. At room temperature, 1.6g PVDF-HFP was dissolved in a mixed solvent of 2.52g DMAc and 5.88g acetone. Stir continuously for 12h until completely dissolved to obtain a 16wt% PVDF-HFP spinning solution. Fill the spinning solution into a syringe with a capacity of 2mL, and the advancing speed is 3ml / h. Connect the needle of the syringe to the positive pole of the high-voltage direct current power supply, use the pretreated 50-mesh stainless steel mesh as the receiving substrate, and connect it to the negative pole of the high-voltage direct current power supply. Adjust the spinning parameters: the electrospinning voltage is 19kV, and the...

Embodiment 2

[0042] Place the 300-mesh stainless steel mesh in acetone and ethanol solutions in sequence, and sonicate for 10 minutes; then put it in water, and continue to sonicate for 10 minutes. The washed stainless steel mesh was placed in an oven and dried at 120°C for 2 hours. At room temperature, 3 g PS was dissolved in a mixed solvent of 2.1 g DMF and 4.9 g THF, and after continuous stirring for 3 h, 30 wt % spinning solution was obtained after further aging for 12 h. Fill the spinning solution into a syringe with a capacity of 2 mL, and advance at a speed of 4 mL / h. Connect the needle of the syringe to the positive pole of the high-voltage DC power supply, and use the pretreated 300-mesh stainless steel mesh as the receiving substrate to connect to the negative pole of the high-voltage DC power supply. Adjust the spinning parameters: the electrospinning voltage is 8kV, and the distance between the stainless steel needle and the metal substrate is adjusted to 15cm. Finally, the t...

Embodiment 3

[0046] Put the 50-mesh phosphorus copper mesh in the acetone and ethanol solution, and sonicate for 10 minutes; then put it in water, and continue to sonicate for 10 minutes. The washed phosphor copper mesh was placed in an oven and dried at 120°C for 2 hours. At room temperature, 0.7 g of PU polymer particles were weighed, added to 9.1 g of DMF and stirred continuously for 12 h until completely dissolved to obtain a 7 wt % spinning solution. Fill the spinning solution into a syringe with a capacity of 2mL, and the advancing speed is 3ml / h. Connect the needle of the syringe to the positive pole of the high-voltage direct current power supply, use the pretreated 50-mesh phosphor copper mesh as the receiving substrate, and connect it to the negative pole of the high-voltage direct current power supply. Adjust the spinning parameters: the electrospinning voltage is 30kV, and the distance between the stainless steel needle and the metal substrate is adjusted to 35cm. Finally, a ...

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Abstract

The invention discloses a high efficiency and continuous oil-water separation device, and belongs to the technical field of functional material application. The device comprises an oil collecting tank, a mechanical pump and an oil collecting device. The collecting tank is of a cube frame structure, metal substrate loaded with hydrophobic film is fixed on five surfaces of the cube frame, the five surfaces of the cube frame are in full contact with the oil and water mixture, and the sixth surface is an opening. The oil inlet of the mechanical pump is connected with the oil collecting tank through a pipeline, the oil outlet of the mechanical pump is connected with the oil collecting device through a pipeline. The high efficiency and continuous oil-water separation device overcomes such defects of polymer membrane that the processing amount is small, the separation speed is slow, and the wastewater can only be processed in batches. The continuous separation of oily wastewater can be conducted, and the high efficiency and continuous oil-water separation device provides a possibility of the application of membrane separation technology in oily wastewater treatment in actual life.

Description

technical field [0001] The invention belongs to the technical field of functional material application and relates to a high-efficiency and continuous oil-water separation device with special wettability. Background technique [0002] With the massive discharge of oily sewage in production and life and the frequent occurrence of offshore oil spill accidents, the exploration and development of high-performance oil-water separation materials and technologies has become an important issue related to people's lives, economic development and environmental safety. [0003] Inspired by the surface structure of lotus leaves, Feng et al. (Reference 1: Feng L, Zhang Z Y, Mai Z H, et al. A super-hydrophobic and super-oleophilic coating mesh film for these separation of oil and water. Angew. Chem. Int.Ed., 2004, 43(15), 2012-2014.) Based on stainless steel wire mesh, using spray-drying technology to modify polytetrafluoroethylene, a low surface energy material, to prepare a spray coatin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D17/022C02F1/40
CPCB01D17/085C02F1/40
Inventor 王女赵勇邱珊珊
Owner BEIHANG UNIV
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