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Fenton method for efficiently degrading organic pollutants in water

An organic pollutant and high-efficiency technology, applied in the field of environmental chemistry, can solve the problems of inconvenient transportation and storage, high cost of pharmaceuticals, instability, etc., and achieve the effect of simple process, avoiding complex preparation process and low cost.

Active Publication Date: 2018-02-13
HAO WEI ENVIRONMENTAL TECH NANTONG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

H in the solution when the traditional Fenton method degrades organic pollutants in sewage 2 o 2 Often by adding H 2 o 2 medicament to provide, the presence of H 2 o 2 The cost of medicine is high and unstable, and the problem of transportation and storage is inconvenient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1: a kind of Fenton method of efficiently degrading organic pollutants in water, described Fenton method is: add magnesium-carbon nanotube composite particle in waste water, add ferrous sulfate heptahydrate, described magnesium-carbon nanotube particle and The mass ratio of ferrous sulfate heptahydrate is 1:0.2, stirred under the condition of feeding oxygen, the mass ratio of the magnesium-carbon nanotube composite particle addition to water COD is 10:1, and the stirring speed is 150r / min, and control the pH value of the solution to 3, the reaction temperature is 10°C, and the reaction time is 1h. After the reaction is completed, adjust the pH value of the solution to 6, separate the solid and liquid, and the supernatant is treated effluent.

[0031] Wherein, the magnesium-carbon nanotube composite particles are prepared by the following method: uniformly mixing carbon nanotubes and magnesium powder, the mass ratio of the magnesium powder and carbon nanotubes...

Embodiment 2

[0032] Embodiment 2: a kind of Fenton method of efficiently degrading organic pollutants in water, described Fenton method is: add magnesium-carbon nanotube composite particle in waste water, add ferrous sulfate heptahydrate, described magnesium-carbon nanotube particle and The mass ratio of ferrous sulfate heptahydrate is 1:0.8, stirred under the condition of feeding oxygen, the mass ratio of the magnesium-carbon nanotube composite particle addition to water COD is 40:1, and the stirring speed is 300r / min, and control the pH value of the solution to 4, the reaction temperature is 40°C, and the reaction time is 3h. After the reaction is completed, adjust the pH value of the solution to 9, separate the solid and liquid, and the supernatant is the treated effluent.

[0033]Wherein, the magnesium-carbon nanotube composite particles are prepared by the following method: uniformly mixing carbon nanotubes and magnesium powder, the mass ratio of the magnesium powder and carbon nanotu...

Embodiment 3

[0034] Embodiment 3: a kind of Fenton method of efficiently degrading organic pollutants in water, described Fenton method is: add magnesium-carbon nanotube composite particle in waste water, add ferrous sulfate heptahydrate, described magnesium-carbon nanotube particle and The mass ratio of ferrous sulfate heptahydrate is 1:0.4, stirred under the condition of feeding oxygen, the mass ratio of the magnesium-carbon nanotube composite particle addition to water COD is 23:1, and the stirring speed is 180r / min, and control the pH value of the solution to 3.5, the reaction temperature is 20°C, and the reaction time is 1.5h. After the reaction is completed, adjust the pH value of the solution to 7, separate the solid and liquid, and the supernatant is treated effluent.

[0035] Wherein, the magnesium-carbon nanotube composite particles are prepared by the following method: uniformly mixing carbon nanotubes and magnesium powder, the mass ratio of the magnesium powder and carbon nanot...

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Abstract

The invention discloses a Fenton method for efficiently degrading organic pollutants in water. The method includes the steps: adding magnesium-carbon nano-tube compound particles and iron vitriol intowaste water; stirring mixture under the condition of oxygen inlet; controlling a pH (potential of hydrogen) value of solution to reach acidity; adjusting the pH value of the solution to reach 6-9 after reaction; performing solid-liquid separation, and taking liquid supernatant as treatment outlet water. According to the method, hydrogen peroxide of generated by reaction among magnesium-carbon nano-tubes and oxygen and added ferrous ions act to generate strongly oxidizing species such as -OH, and the organic pollutants in the water are completely mineralized into inorganic substances and removed. The method is wide in raw material source, low in price and cost, simple in process, convenient to operate, mild in reaction condition and applicable to large-scale industrial production, and theorganic pollutants are efficiently degraded.

Description

technical field [0001] The invention belongs to the technical field of environmental chemistry, and in particular relates to a Fenton method for efficiently degrading organic pollutants in water. Background technique [0002] With the rapid development of modern industrial and agricultural production, associated refractory organic pollutants (such as PAHs, PCBs, antibiotics, etc.) such as pesticides, fertilizers, and industrial wastes continue to enter the environment. Refractory organic matter refers to organic matter that is difficult to be completely metabolized by microorganisms under normal conditions, or is difficult to be completely degraded and removed by general physical and chemical methods. These refractory organic pollutants often have "three-caused" effects and high bioaccumulation, causing great harm to human health and the ecological environment. The discharge of organic pollutant wastewater is the main way for these refractory organic pollutants to enter the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72
Inventor 刘咏杨照龚小波谭妮
Owner HAO WEI ENVIRONMENTAL TECH NANTONG CO LTD
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