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Preparation method and applications of nanometer graphene oxide modified film

A nano-graphite oxide, nano-technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of easy membrane fouling, increase MBR energy consumption, etc., to improve hydrophilicity and anti-pollution performance. , Improve chemical stability, good compatibility effect

Active Publication Date: 2015-08-12
波塞冬(江苏)新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many studies have shown that due to the relationship between the characteristics of the membrane material itself and the components in the activated sludge, it is easy to cause membrane fouling and increase the energy consumption of MBR.

Method used

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  • Preparation method and applications of nanometer graphene oxide modified film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Prepare the mold sol, add the film material polyvinylidene fluoride (PVDF) and nano-graphene oxide to the solvent N-methylpyrrolidone (NMP), fully stir and mix to obtain the mold sol, and each group in the gained mold sol The mass percent of the fraction is 50wt.% of film material, 12wt.% of nano-graphene oxide sheet, and the rest are solvents;

[0020] (2) Scrape the mold sol obtained in step (1) on the non-woven fabric, and the thickness of the scraped film is controlled to be 120 μm. Lay the cloth flat and fix it on the tripod support, the non-woven fabric coated with the mold sol faces up, and then place the support on the bottom of the Teflon sealed tank, which is filled with deionized water , the height of the mold sol coated on the surface of the non-woven fabric from the liquid surface of the deionized water is 1.2 times the depth of the deionized water; heating the deionized water at 120 ° C, the surface of the non-woven fabric located above the deionized w...

Embodiment 2

[0031](1) Prepare the mold sol, add the film material polyvinylidene fluoride (PVDF) and nano-graphene oxide to the solvent N-methylpyrrolidone (NMP), fully stir and mix to obtain the mold sol, and each group in the gained mold sol The mass percent of the fraction is 45wt.% of film material, 10wt.% of nano-graphene oxide sheet, and the rest are solvents;

[0032] (2) Scrape the mold sol obtained in step (1) on the non-woven fabric. The thickness of the scraped film is controlled to be 125 μm. Lay the cloth flat and fix it on the tripod support, the non-woven fabric coated with the mold sol faces up, and then place the support on the bottom of the Teflon sealed tank, which is filled with deionized water , the height of the mold sol coated on the surface of the non-woven fabric from the liquid surface of the deionized water is 1.5 times the depth of the deionized water; heating the deionized water at 130 ° C, the surface of the non-woven fabric located above the deionized water ...

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Abstract

The present invention relates to the technical field of sewage treatments, particularly to a preparation process of a nanometer graphene oxide film material for a biological reactor. The specific process comprises: adding a film material and nanometer graphene oxide to a solvent, completely stirring and uniformly mixing to obtain a mold casting sol, carrying out film scrapping of the mold casting sol on a non-woven fabric, placing the non-woven fabric coated with the mold casting sol on the bottom of a polytetrafluoroethylene tank after completing the film scrapping, heating deionized water to fumigate the mold casting sol, removing the non-woven fabric after completing the fumigating so as to obtain the pre-finished product film, and carrying out cleaning and drying to obtain the nanometer graphene oxide modified film finished product having the porous structure.

Description

technical field [0001] The invention relates to a method in the technical field of sewage treatment, in particular to a preparation process of a nano-graphene oxide membrane material for a bioreactor. Background technique [0002] MBR (Membrane Bioreactor) method, that is, membrane bioreactor is a new and efficient sewage treatment technology. It is a new sewage treatment technology that combines traditional membrane separation technology with biological treatment technology. It uses the metabolism of microorganisms to treat sewage The organic matter in the medium is converted serially, and at the same time, the membrane module is used to separate the intercepted reaction products and organisms, so that the quality of the effluent water is good, and it is more beneficial to realize the reuse of reclaimed water. As an advanced water treatment technology, MBR technology has become a hot spot all over the world. technology use. According to the actual operation effect, compare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/68B01D71/34B01D71/42B01D71/52B01D69/02B01D67/00C02F3/10
CPCY02W10/10
Inventor 魏永徐斓孔泳杨大伟
Owner 波塞冬(江苏)新材料科技有限公司
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