Preparation method of novel composite nano material
A composite nanomaterial and a new type of technology, applied in the field of preparation of new composite nanomaterials, can solve the problems of reduced filtration rate, membrane pore clogging, cost reduction, etc.
Pending Publication Date: 2021-07-06
西安科利思源环保科技有限公司
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Problems solved by technology
[0002] At this stage, the cost of polymer membranes and ceramic membranes has been greatly reduced, and the large-scale use of membrane technology to treat sewage has become more and more common around the world; however, in the process of membrane filtration, due to the characteristics of filtration, various The accumulation of pollutants on the surface of the membrane, which leads to the clogging of the membrane pores and the decrease of the filtration rate is collectively referred to as membrane fouling; the adsorption and accumulation of natural organic matter on the surface of the membrane is usually the main factor affecting the performance of the membrane; therefore, in sewage treatment Frequent maintenance (membrane cleaning and membrane replacement) due to membrane fouling during the process seriously affects the sewage treatment efficiency of membrane technology and the cost of later operation and maintenance
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[0014] The present invention is described in detail in conjunction with accompanying drawing and specific embodiment:
[0015] A preparation method of a new type of composite nanomaterial: active carbon powder, magnesium chloride hexahydrate, aluminum chloride hexahydrate, water, NaOH, NaOH 2 CO 3 Mix according to the mass ratio of 1:6:4:50:30:30 and stir vigorously for 30 minutes; centrifuge the reacted solution and vacuum dry the obtained activated carbon powder deposited with Mg / Al gel at 400-450°C Sintering at a certain temperature for 5 hours, after cooling, the activated carbon powder containing Mg / Al nanocrystals can be obtained; the activated carbon powder containing Mg / Al nanocrystals has super high adsorption of natural organic matter and phosphorus;
[0016] Mg / Al nano-crystal activated carbon powder is prepared to obtain a composite structure membrane group: the membrane module can use tubular membranes such as hollow fiber membranes (200nm>aperture>50nm, 6mm>inne...
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The invention belongs to the technical field of nano materials, and particularly relates to a preparation method of a novel composite nano material. The preparation method comprises the following step: carrying out heat treatment on activated carbon powder deposited with Mg / Al gel, which is obtained by mixing and reacting magnesium chloride hexahydrate and aluminum chloride hexahydrate solution with activated carbon, through a sol-gel technology to convert Mg / Al sol into nano Mg / Al crystals which are attached to the inside and the surface of the activated carbon powder, so as to obtain the Mg / Al-PAC composite material, that is active carbon powder containing Mg / Al nanocrystals. The novel composite nano material has ultrahigh organic matter and phosphorus adsorbability, and meanwhile, the problems that the suspended Mg / Al nanocrystals are easy to agglomerate and difficult to recover are solved.
Description
technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a preparation method of a novel composite nanometer material. Background technique [0002] At this stage, the cost of polymer membranes and ceramic membranes has been greatly reduced, and the large-scale use of membrane technology to treat sewage has become more and more common around the world; however, in the process of membrane filtration, due to the characteristics of filtration, various The accumulation of pollutants on the surface of the membrane, which leads to the clogging of the membrane pores and the decrease of the filtration rate is collectively referred to as membrane fouling; the adsorption and accumulation of natural organic matter on the surface of the membrane is usually the main factor affecting the performance of the membrane; therefore, in sewage treatment Frequent maintenance (membrane cleaning and membrane replacement) due to membran...
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Patent Timeline
Login to View More IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/44C02F101/30C02F101/10
CPCB01J20/205B01J20/28057B01J20/2808C02F1/283C02F1/44C02F2101/30C02F2101/105
Inventor 不公告发明人
Owner 西安科利思源环保科技有限公司