Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Modified nano TiO2/Ag/bamboo charcoal composite material and method for killing microorganisms in medical sewage by virtue of same

A composite material and bamboo charcoal technology, applied in the field of TiO2/Ag/bamboo charcoal composite materials, can solve the problems of serious bio-fouling and pungent odor in the pipe network

Inactive Publication Date: 2013-12-18
NORTHWESTERN POLYTECHNICAL UNIV
View PDF6 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent discloses a medical sewage treatment system. The sewage first passes through the MBR membrane filter tank to remove solid particles in the water, and then passes through the mixed disinfection tank for sterilization. This system does have many advantages. We only propose that the sterilization part of the system uses ozone Disinfection has the following problems: ①. The treated medical wastewater will have a pungent odor due to the residual ozone; ②. Some ozone by-products are formed; ③. Ozone treatment of wastewater will increase the biodegradability of soluble natural organic matter. Biofouling in the pipe network will be more serious

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Modified nano TiO2/Ag/bamboo charcoal composite material and method for killing microorganisms in medical sewage by virtue of same
  • Modified nano TiO2/Ag/bamboo charcoal composite material and method for killing microorganisms in medical sewage by virtue of same
  • Modified nano TiO2/Ag/bamboo charcoal composite material and method for killing microorganisms in medical sewage by virtue of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: 1. Add 1 part of butyl titanate and 3 parts of absolute ethanol by volume into a dry clean container and stir evenly to make A solution, then add 0.3 parts of nitric acid with a concentration of 0.21mol / L Add iron solution, 1 part of absolute ethanol, and 0.5 part of glacial acetic acid by volume into a dry container and stir evenly to make solution B; ②, slowly add solution B to solution A, stir while adding, and dropwise complete Then continue to stir for about 30 minutes to form a stable sol, and age the sol for about 5 hours for use; ③. After putting the bamboo charcoal into the aged sol prepared in step ②, treat it under ultrasonic conditions with a frequency of 45KHz at 32°C for 1 hour to dilute the sol. The gel enters the internal pores of the bamboo charcoal, and then the bamboo charcoal is taken out and dried at 80°C; ④, the bamboo charcoal is taken out of the drying oven in step ③ and roasted in a tube furnace at 550°C for 3 hours in a nitrogen atmos...

Embodiment 2

[0029] Example 2: 1. Add 1 part of butyl titanate and 3 parts of absolute ethanol by volume into a dry container and stir evenly to make A solution, then add 0.4 parts of nitric acid with a concentration of 0.21mol / L Add iron solution, 1 part of absolute ethanol, and 0.5 part of glacial acetic acid by volume into a dry container and stir evenly to make solution B; ②, slowly add solution B to solution A, stir while adding, and dropwise complete Then continue to stir for about 30 minutes to form a stable sol, and age the sol for about 5 hours for use; ③. After putting the bamboo charcoal into the aged sol prepared in step ②, treat it under ultrasonic conditions with a frequency of 45KHz at 32°C for 1 hour to dilute the sol. The gel enters the internal pores of the bamboo charcoal, and then the bamboo charcoal is taken out and dried at 80°C; ④, the bamboo charcoal is taken out of the drying oven in step ③ and roasted in a tube furnace at 550°C for 3 hours in a nitrogen atmosphere ...

Embodiment 3

[0030] Example 3: 1. Add 1 part of butyl titanate and 3 parts of absolute ethanol by volume into a dry clean container and stir evenly to make A solution, then add 0.4 parts of nitric acid with a concentration of 0.21mol / L Add iron solution, 1 part of absolute ethanol, and 0.5 part of glacial acetic acid by volume into a dry container and stir evenly to make solution B; ②, slowly add solution B to solution A, stir while adding, and dropwise complete Then continue to stir for about 30 minutes to form a stable sol, and age the sol for about 5 hours for use; ③. After putting the bamboo charcoal into the aged sol prepared in step ②, treat it under ultrasonic conditions with a frequency of 45KHz at 32°C for 1 hour to dilute the sol. The gel enters the internal pores of the bamboo charcoal, and then the bamboo charcoal is taken out and dried at 80°C; ④, the bamboo charcoal is taken out of the drying oven in step ③ and roasted in a tube furnace at 550°C for 3 hours in a nitrogen atmos...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a modified nano TiO2 / Ag / bamboo charcoal composite material and a method for killing microorganisms in medical sewage by virtue of the same. A preparation method of the composite material comprises the following steps of preparing stable modified TiO2 sol by a sol-gel method, performing ultrasonic treatment to enable titanium dioxide particles to enter internal pores of bamboo charcoal, and roasting to prepare the nano-level titanium dioxide which has photocatalytic activity and is loaded on the bamboo charcoal. According to the invention, very little hydrogen peroxide is added into the medical sewage with certain concentration to adjust the pH to 3-4, the composite material is added into the sewage (wherein the adding amount of the composite material is about 20g / L), and then the microorganisms in the medical sewage can be killed efficiently in the sunlight. After the sewage is treated in the sunlight for 10 minutes, the observation in a microscope shows that a good killing effect for the microorganisms in the medical sewage is obtained.

Description

technical field [0001] The invention relates to a modified nano TiO 2 / Ag / bamboo charcoal composite material and its method for killing microorganisms in medical sewage, specifically relating to a kind of TiO 2 / Ag / bamboo-charcoal composite material and the method of using the material to kill microorganisms in medical sewage under sunlight. Add a very small amount of hydrogen peroxide, TiO 2 The / Ag / bamboo charcoal composite material can produce hydroxyl radicals and silver ions in the sewage under sunlight to destroy the microbial cell structure, and can kill various microorganisms in the sewage, thereby treating medical wastewater at a very low cost. Background technique [0002] The source and composition of medical wastewater are very complex, containing a large number of pathogenic microorganisms, toxic and harmful physical and chemical pollutants, and having the characteristics of space pollution, acute infection, latent infection, etc. If it is discharged directly ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/50C02F1/30C02F1/50C02F1/72
Inventor 黄英张伟吴海伟王潇雅赵阳邵杰
Owner NORTHWESTERN POLYTECHNICAL UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com