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Method for treating organic wastewater containing aniline through Fenton catalytic degradation reaction

A technology for catalytic degradation and organic wastewater, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of poor aniline wastewater, purple spots, poor biodegradability, etc. problem, to achieve the effect of no equipment, low cost and simple operation

Inactive Publication Date: 2013-12-04
天津天雷科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aniline is highly toxic, and is quickly absorbed by the human body through the skin and inhalation of steam, causing purpura; and it is relatively stable in water and has poor biodegradability, so it is more harmful to the environment
General wastewater treatment methods such as: neutralization method, flocculation method, and biochemical method are not effective in treating aniline wastewater.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of method of Fenton catalytic degradation reaction processing containing aniline organic waste water: described experiment is carried out in beaker, get 100mL, the aniline solution of 20mg / L, adjust solution pH value to 1.0 with dilute sulfuric acid or sodium hydroxide solution, add some A certain amount of ferrous sulfate solution, then add an appropriate amount of H while stirring 2 O solution (added H 2 o 2 and Fe 2+ The concentration ratio is about 10︰l), magnetic stirring reaction at room temperature for 60min, the pH value of the treated water sample was adjusted to 6.8, and then centrifuged for 30min to take the supernatant. Use UV-2102C type ultraviolet-visible spectrophotometer, with 1cm quartz cuvette, measure solution absorbance by regular sampling, calculate aniline removal rate=(1-A / A 0 )*100%.

[0016] Adjust the pH value of the solution to 3.0 with dilute sulfuric acid or sodium hydroxide solution, and the other conditions are the same as above...

Embodiment 2

[0023] The experiment is carried out in a beaker, take 100mL, 20mg / L aniline solution, adjust the pH value of the solution to 3.0 with dilute sulfuric acid or sodium hydroxide solution, first add a certain amount of ferrous sulfate solution, then add an appropriate amount of h 2 O solution (added H 2 o 2 and Fe 2+ The concentration ratio is about 10︰l), magnetically stirred at 15°C for 60 minutes, adjusted the pH value of the treated water sample to 6.8, and then centrifuged for 30 minutes to take the supernatant. Use UV-2102C type ultraviolet-visible spectrophotometer, with 1cm quartz cuvette, measure solution absorbance by regular sampling, calculate aniline removal rate=(1-A / A 0 )*100%.

[0024] Adjust the temperature to 20°C, and the other conditions are the same as above.

[0025] Adjust the temperature to 25°C, and the other conditions are the same as above.

[0026] Adjust the temperature to 30°C, and the other conditions are the same as above.

[0027] See Table...

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Abstract

The invention discloses a method for treating organic wastewater containing aniline through a Fenton catalytic degradation reaction, and belongs to the technical field of environmental protection. According to the method, a mixed system is composed of H2O2 and Fe2+, the H2O2 is subjected to catalytic degradation to generate OH which is used for attacking aniline molecules to seize hydrogen, and the macromolecule aniline is degraded into micromolecule organic matter or mineralized into inorganic matter such as CO2 and H2O. The method for treating the organic wastewater containing the aniline through the Fenton catalytic degradation reaction has the advantages that the operation process is simple, reactants are easy to obtain, expenses are low, complex equipment is not needed, and the method is environmentally friendly, is already gradually applied to wastewater treatment engineering including dye, preservatives, developers and pesticides, and has good application prospect.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for treating aniline-containing organic wastewater by Fenton catalytic degradation reaction. Background technique [0002] With the rapid development of industry and agriculture in our country, there are more and more toxic or refractory organic components in water, and how to deal with such substances and improve their treatment effect has become a topic of concern in the water treatment industry. Among them, aniline compounds are common organic pollutants in water. Mainly produced in petroleum, paper, coking and other chemical industries. Aniline is highly toxic, and is quickly absorbed by the human body through the skin and inhalation of steam, causing purpura. It is relatively stable in water and has poor biodegradability, so it is more harmful to the environment. General wastewater treatment methods such as: neutralization method, floc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F101/38
Inventor 李玉丹王金赫川
Owner 天津天雷科技有限公司