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A hollow fiber oxygen-dissolving membrane and its components

A fiber membrane, dissolved oxygen technology, applied in membrane technology, semi-permeable membrane separation, ultrafiltration, etc., can solve the problems of large gas-liquid oxygen transfer resistance, low oxygen dissolution rate, poor oxygen dissolution efficiency, etc., and achieve space utilization. The effect of high rate, increased concentration and low cost

Active Publication Date: 2017-08-04
XIAMEN LEEBAM MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the existing hollow fiber membrane is applied to the mass transfer of oxygen, the gas-liquid oxygen transfer resistance is large, the speed of oxygen dissolution is low, and the efficiency of oxygen dissolution is poor, which hinders its application in the field of aeration

Method used

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  • A hollow fiber oxygen-dissolving membrane and its components
  • A hollow fiber oxygen-dissolving membrane and its components
  • A hollow fiber oxygen-dissolving membrane and its components

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The hollow fiber oxygen-dissolving membrane raw material of this embodiment is made up of the following components of mass fraction: 20% polyvinyl chloride, 10% kerosene, 1% cyclohexane, 49% dioctyl phthalate and 20% glycerol . Mix the above raw materials evenly to make a film-making material, heat and melt at 150°C through an extrusion molding machine to form a uniform liquid phase, extrude through a hollow fiber membrane die and cool to form a film, and its inner cavity is expanded by compressed air Keep the tubular shape, and then enter the liquid phase separation tank, and the dioctyl phthalate, glycerol, etc. in the membrane material are separated into the tank, and the hollow fiber oxygen-dissolving membrane is obtained.

[0035] The prepared hollow fiber oxygen-dissolving membrane has an inner diameter of 0.2mm, a wall thickness of 0.1mm, and a pore diameter of 0.25um, and has the characteristics of high oxygen solubility, high strength and high gas flux.

Embodiment 2

[0037] The hollow fiber oxygen-dissolving membrane raw material of the present embodiment is made up of the following components of mass fraction: 40% polyacrylonitrile, the mixture of 7% kerosene and paraffin, 10% oleic acid, 30% dibutyl phthalate and 13% polyethylene glycol. Mix the above raw materials evenly to make a film-making material, heat and melt at 200°C through an extrusion molding machine to form a uniform liquid phase, extrude through a hollow fiber membrane die and cool to form a film, and its inner cavity is filled with phthalic acid di The octyl ester is used as the core liquid to expand and maintain the tubular shape, and then enters the liquid phase separation tank, and the dibutyl phthalate and polyethylene glycol in the membrane material are separated into the tank to obtain a hollow fiber oxygen-dissolving membrane.

[0038] The prepared hollow fiber oxygen-dissolving membrane has an inner diameter of 0.4mm, a wall thickness of 0.13mm, and a pore diameter...

Embodiment 3

[0040] The raw material of the hollow fiber oxygen-dissolving membrane in this embodiment is composed of the following components by mass fraction: 60% polyurethane, 1% chlorofluorocarbon, 7% mixture of oleic acid and ethane, 20% xylene and 12% polyvinylpyrrolidone. Mix the above raw materials evenly to make a film-making material, heat and melt at 280°C through an extrusion molding machine to form a uniform liquid phase, extrude through a hollow fiber membrane die and cool to form a film, and its inner cavity is filled with phthalic acid di The octyl ester is used as the core liquid to expand and maintain the tubular shape, and then enters the liquid phase separation tank, and the xylene and polyvinylpyrrolidone in the membrane material are separated into the tank to obtain the hollow fiber oxygen-dissolving membrane.

[0041] The prepared hollow fiber oxygen-dissolving membrane has an inner diameter of 0.35mm, a wall thickness of 0.14mm, and a pore diameter of 0.3um, and has ...

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Abstract

The invention discloses a hollow fiber oxygen-dissolving membrane, whose components include a polymer, an oxygen-dissolving agent, an oxygen-transfer agent, etc., and is prepared by a heat-induced phase method or a solution phase transfer method. The invention also discloses an aeration component, which includes the membrane filament made of the aforementioned hollow fiber oxygen-dissolving membrane and at least one gas pipe. It enters the inner cavity of the membrane filament and diffuses into the water through its micropores. The hollow fiber oxygen-dissolving membrane of the present invention reduces the resistance of a dense water film formed by aerated air bubbles in water, promotes gas-liquid oxygen transfer, accelerates the speed of oxygen dissolved in water, has high oxygen utilization rate and low energy consumption.

Description

technical field [0001] The invention relates to the field of sewage and wastewater treatment, in particular to a hollow fiber oxygen-dissolving membrane and components thereof. Background technique [0002] In the wastewater and sewage treatment process, biochemical treatment is a very important link. Among them, the aerobic biochemical treatment is to force the oxygen in the air to be transferred to the sewage and wastewater through the aeration device to increase the concentration of dissolved oxygen in the water, so as to ensure that the aerobic microorganisms in the sludge liquid can treat the organic matter in the sewage under the condition of sufficient dissolved oxygen. Oxidative decomposition is carried out to remove impurities in water and achieve the purpose of purifying water quality. [0003] The aeration system is the largest energy-consuming link in the wastewater treatment process, accounting for about 50-70% of the total energy consumption. Therefore, improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/44B01D39/14B01D61/14B01D69/10B01D69/12B01D71/34B01D71/68B01D71/30B01D71/56B01D71/26B01D71/48B01D71/42B01D71/50B01D71/60B01D71/66
Inventor 黄德昌王俊川林玉泰苏伟忠
Owner XIAMEN LEEBAM MEMBRANE TECH
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