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

Method for degrading carmine

A carmine and hydrogen peroxide technology, which is applied in textile industry wastewater treatment, oxidized water/sewage treatment, etc., can solve the problems of hydrogen peroxide waste, low utilization rate, and limited application range

Inactive Publication Date: 2015-12-30
HUBEI UNIV OF SCI & TECH
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When using the Fenton system to treat wastewater, H 2 o 2 The large dosage (greater than 0.1mol / L) and low utilization rate of hydrogen peroxide caused a lot of waste of hydrogen peroxide, which greatly increased the application cost of this technology and limited its application range

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
  • Method for degrading carmine
  • Method for degrading carmine
  • Method for degrading carmine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] When the carmine concentration is 16mg / L, different concentrations of NaNO 2 And H 2 O 2 Influence on decolorization rate:

[0026] The following NaNO 2 And H 2 O 2 The concentration is molarity;

[0027] Table 1.1

[0028]

[0029] Table 1.2

[0030]

Embodiment 2

[0032] When the carmine concentration is different, the different concentration of NaNO 2 The effect of hydrogen peroxide and hydrogen peroxide on the decolorization rate:

[0033] The following NaNO 2 And the concentration of hydrogen peroxide is molar concentration;

[0034] Table 2.1

[0035]

[0036] Table 2.2

[0037]

Embodiment 3

[0039] When the carmine concentration is 40mg / L, different concentrations of NaNO 2 The effect of hydrogen peroxide and hydrogen peroxide on the decolorization rate:

[0040] The following NaNO 2 And the concentration of hydrogen peroxide is molar concentration;

[0041] Form 3.1

[0042] Example number Carmine concentration NaNO2 H2O2 Decolorization rate pH value 1 40mg / L 0.030.005531.8 2 40mg / L 0.030.01691.9 3 40mg / L 0.030.015791.9 4 40mg / L 0.030.02881.9 5 40mg / L 0.030.025911.9

[0043] Table 3.2

[0044]

[0045] Through orthogonal experiment and single factor analysis experiment on carmine wastewater, the best experimental conditions for treating this printing and dyeing wastewater were determined. In NaNO 2 And H 2 O 2 When the molar concentration is 1:1 and the reaction time is 60s, the decolorization rate can reach more than 90%. Experiments show that the peroxynitrite system can efficiently degrade carmine wastewater. The above experiments prove that the system can be use...

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 provides a method for degrading carmine, comprising the following steps: a, adjusting pH value of a carmine solution to 1.5-2.1; b, adding hydrogen peroxide, and stirring and uniformly mixing; c, adding sodium nitrite to start a reaction, rapidly stirring and simultaneously adding, wherein the reaction time is 60 seconds. The method is used as an advanced oxidation method for efficiently degrading organic wastewater. In addition, residual H2O2 in the system also can act synergistically along with a traditional Fenton oxidation system. Thus, an efficient rapid pollution-free degradation effect is achieved. The method is worth of popularization.

Description

Technical field [0001] The invention relates to wastewater treatment, in particular to the treatment of carmine dye wastewater. Background technique [0002] Dye wastewater is one of several difficult industrial wastewaters at present, accounting for about 1 / 10 of the total industrial wastewater discharge. With the development of dyestuff and printing and dyeing industry, its sewage discharge and pollution to water bodies are increasing. [0003] Traditional industrial methods to remove organic dye wastewater include adsorption, biochemical and coagulation sedimentation methods. Among them, the adsorption method has high processing efficiency and low adsorption interference, but its disadvantages are high cost of medicament and low compliance rate. The biochemical method has a low processing cost and has a processing effect on a variety of organic substances. The disadvantage is that the degradation efficiency of artificially synthesized macromolecular organic substances is very ...

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): C02F1/72C02F103/30
Inventor 黄俊潮
Owner HUBEI UNIV OF SCI & TECH
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