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Nano granule water purifying material for removing bacteria and virus, and preparation thereof

A nanoparticle and bacteria technology, applied in the field of sewage purification and wastewater, can solve the problems of high cost, difficult regeneration and low efficiency.

Inactive Publication Date: 2008-10-01
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These water treatment technologies have been able to purify water to a higher level, but they have many shortcomings: low efficiency, high cost, difficult regeneration, and secondary pollution.

Method used

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  • Nano granule water purifying material for removing bacteria and virus, and preparation thereof
  • Nano granule water purifying material for removing bacteria and virus, and preparation thereof
  • Nano granule water purifying material for removing bacteria and virus, and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066] Take 30g of pretreated quartz sand (60-80 mesh) into 200mL secondary deionized water and mix evenly, add 1.5g / L boric acid 10mL, mix evenly for 20min, at 80°C, add nano-aluminum powder ( Prepared by the electric explosive wire method, the average particle size is 45nm) 2.6g, placed in an ultrasonic tank for ultrasonic oscillation (K-100 ultrasonic cleaner, ultrasonic frequency 235KHz) for 30min; then add 2g / L tetrahexyl orthosilicate to the mixture Esters in ethanol (alcohol, ester volume ratio 2.5:1) solution 50mL, continue ultrasonic stirring treatment for 20min, stop ultrasonic, keep warm with the tank for 3 hours; filter the prepared solid-liquid mixture with Buchner funnel, filter material with secondary After washing with deionized water several times until there is no filter residue in the washing liquid, the filter material is moved to a drying oven and dried at 60° C. for 10 hours to obtain 30.8 g of AlO(OH) nanoparticle water purification material.

[0067] Th...

Embodiment 2

[0069] Move the sample prepared in Example 1 into a muffle furnace, raise the temperature to 450°C at a rate of 10°C / min, roast for 2.5 hours, and then cool to room temperature with the furnace to obtain 30.6g γ-Al 2 o 3 Nano water purification material. Filter coating composition is γ-Al 2 o 3 , the coating accounts for 1.96% of the total weight of the substrate and the coating, the average particle size of the coating is 92nm, and the specific surface area is 205m 2 / g, the coating thickness is 1.42 μm.

Embodiment 3

[0071]Take 30g of pretreated quartz sand (40-60 mesh) into 200ml of secondary deionized water and mix evenly, add 20ml of 4g / L sodium salicylate, mix evenly for 30min, then add 4.56 g nano-iron powder (made by electric explosive wire method, average particle size 85nm), placed in an ultrasonic tank for ultrasonic oscillation (ultrasonic frequency 235KHz) for 45min, and then adding 4.5g / L ethanol solution of tetrahexyl orthosilicate to the mixture (alcohol, ester volume ratio 3:1) 55mL, continue ultrasonic oscillation for 30min, turn off the ultrasonic wave, and keep warm with the tank for 5h; filter the solid-liquid mixture prepared above with a Buchner funnel, and wash the filter material with deionized water twice. After the washing solution has no filter residue, the filter material is dried in a drying oven at a temperature of 80° C. for 10 hours to obtain 30.88 g of FeOOH nano-particle water purification material.

[0072] The filter coating composition is FeOOH, the coat...

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Abstract

The invention relates to a series of nano-particle water purification materials, which take quartz sand or zeolite particle as a substrate, nanometer aluminum (iron) oxide or nanometer aluminum (iron) oxidized hydrogen oxide as a modified filtration coating, and can effectively and completely remove bacilli and virus from wastewater and sewage. The invention also relates to a preparation method of the nano-particle water purification materials. In the preparation method, acidic solution with 40 to100 meshes of quartz sand or 60 to120 meshes of clinoptilolite is poured into secondary deionized water, uniformly mixed and heated, nano-aluminum powder, aluminum nitride powder or iron powder is poured into the acidic solution and ultrasonically mixed and ethanol solution of ester is then poured into the mixed acidic solution, ultrasonically mixed again, filtrated and dried so as to gain nano-fibriform AlO(OH) or FeOOH which is the particle water purification materials of filtration coating which are further roasted so as to gain Gamma-Al2O3 or Fe2O3 which is the particle water purification materials of filtration coating. The nano-particle water purification materials of the invention have the advantages of strong removal ability, high cleanliness, great saturated adsorption capacity, etc.

Description

technical field [0001] The invention belongs to the field of wastewater and sewage purification, and specifically relates to a series of modified filter coatings that use quartz sand or zeolite particles as the matrix and nano-aluminum (iron) oxide or nano-aluminum (iron) oxyhydroxide as the modified filter coating, which can treat wastewater, A nanoparticle water purification material for completely and effectively removing bacteria and viruses in sewage, and a preparation method of the nanoparticle water purification material. technical background [0002] In the 21st century, due to the rapid development of economy and society, and the continuous acceleration of industrialization and urbanization, my country's environmental situation has developed to a very severe level. Environmental pollution continues to accumulate at a relatively high level, and ecological damage continues to increase. In some areas, environmental pollution and ecological damage have hindered the sust...

Claims

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Application Information

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IPC IPC(8): B01D39/06
Inventor 韩炜刘光辉徐跃王培培刘琼
Owner JILIN UNIV
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