Novel biological pollution-resistant polyamide reverse osmosis composite membrane and preparation method thereof

A reverse osmosis composite membrane and anti-biological pollution technology, which is applied in the field of membrane separation, can solve the problems of uncontrollable polymerization process of ordinary free radical polymerization, and achieve the goal of solving uncontrollable polymerization process, improving use efficiency and service life, and saving energy Effect

Active Publication Date: 2016-08-10
TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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  • Application Information

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Problems solved by technology

ATRP can be polymerized at room temperature and the polymerization process is highly controllable. Applying it to the preparation of reverse osmosis membranes for seawater desalination can not only save energy, but also solve the problem of uncontrollable polymerization process of ordinary free radical polymerization.

Method used

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  • Novel biological pollution-resistant polyamide reverse osmosis composite membrane and preparation method thereof
  • Novel biological pollution-resistant polyamide reverse osmosis composite membrane and preparation method thereof
  • Novel biological pollution-resistant polyamide reverse osmosis composite membrane and preparation method thereof

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Embodiment 1

[0041] A preparation method of a novel anti-biological fouling polyamide reverse osmosis composite membrane, comprising the following steps:

[0042] (1) Polyamide reverse osmosis membrane was prepared by interfacial polymerization: first soak the polysulfone-based membrane with 30% isopropanol aqueous solution for 6 hours, then repeatedly rinse the surface of the membrane with deionized water, and let it dry naturally. Preparation mass concentration is 2.0% m-phenylenediamine, 1.6% triethylamine and 4% camphorsulfonic acid aqueous solution, pours above-mentioned aqueous solution into membrane frame, is placed on the shaking table that rotating speed is 80rpm / min 40s, the solution After pouring out, let it dry naturally; prepare a solution of 1,3,5-benzenetricarboxylic acid chloride Isopar G with a mass concentration of 0.1%, pour it into the film frame, let it stand for 30 seconds, and then pour it out. After the Isopar G evaporates to dryness, place it Heat treatment in an o...

Embodiment 2

[0048] A preparation method of a novel anti-biological fouling polyamide reverse osmosis composite membrane, comprising the following steps:

[0049] (1) Polyamide reverse osmosis membrane was prepared by interfacial polymerization: first soak the polysulfone-based membrane with 30% isopropanol aqueous solution for 6 hours, then repeatedly rinse the surface of the membrane with deionized water, and let it dry naturally. Prepare an aqueous solution of m-phenylenediamine, 1.6% triethylamine and 4% camphorsulfonic acid with a mass concentration of 2.0%, pour the above aqueous solution into the membrane frame, shake on a shaker at 80rpm for 40s, pour out the solution and dry it naturally ; prepare 1,3,5-benzenetricarboxylic acid chloride Isopar G solution with a mass concentration of 0.1%, pour it into the film frame, let it stand for 30 seconds, pour it out, and after the Isopar G evaporates to dryness, place it in an oven at 100°C for heat treatment 5min to obtain a cross-linked...

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Abstract

The invention discloses a novel biological pollution-resistant polyamide reverse osmosis composite membrane and a preparation method thereof. The preparation method comprises carrying out graft modification on a polyamide reverse osmosis membrane through atom transfer radical polymerization (ATRP), carrying out sterilization particle loading to obtain a reverse osmosis composite membrane with bioattachment resistance and antibacterial properties. The reverse osmosis composite membrane polymerization process is carried out at the room temperature and has high controllability. The reverse osmosis composite membrane can be conveniently and fast prepared, has stable performances, effectively improves use efficiency and a use life and reduces a seawater desalination cost.

Description

technical field [0001] The invention relates to the technical field of membrane separation, in particular to a novel anti-biological pollution polyamide reverse osmosis composite membrane and a preparation method thereof. Background technique [0002] At present, the problem of global water resources is serious, and desalination of seawater has become an important strategic means to solve the shortage of water resources and plays an important role. Reverse osmosis technology is currently the most widely used technology in the preparation of high-purity water. It plays an increasingly important role in the desalination of seawater and brackish water, creating huge economic and social benefits. [0003] Although reverse osmosis technology has been greatly developed and has entered the stage of commercial application, membrane fouling is still a key bottleneck restricting the development of reverse osmosis technology. Membrane fouling will lead to the formation of a gel layer ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/76B01D67/00B01D69/02B01D69/12B01D71/56B01D71/68
CPCB01D67/0079B01D69/02B01D69/12B01D71/56B01D71/68B01D71/76B01D2325/36B01D2325/48
Inventor 赵曼张慧峰张雨山
Owner TIANJIN SEA WATER DESALINATION & COMPLEX UTILIZATION INST STATE OCEANOGRAPHI
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