A kind of multiple free radical synergistic water treatment method under plasma environment

A synergistic, water treatment technology, applied in the field of water pollution prevention and control, can solve problems such as application limitation and narrow pH range, and achieve the effects of wide application range, good repeatability, and novel and reasonable design.

Active Publication Date: 2017-03-15
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of hydroxyl radicals to organic wastewater treatment has certain limitations, such as a narrow pH range, which limits its application. Therefore, new methods need to be proposed to solve these problems

Method used

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  • A kind of multiple free radical synergistic water treatment method under plasma environment
  • A kind of multiple free radical synergistic water treatment method under plasma environment
  • A kind of multiple free radical synergistic water treatment method under plasma environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) First draw the standard curve of the organic dye RhB, take different concentrations of the aqueous solution of the organic dye RhB, measure the fluorescence intensity, and draw the standard curve.

[0059] (2) Preparation of active nanoparticles with Au@SiO2 core-shell structure, the preparation steps are as follows: First, take a three-necked flask and add 100mL of distilled water, 40mL of ethanol, and 0.640g of CTAB solid powder in a 70°C water bath at 600r / h The reaction was stirred at min speed for 10 minutes, and the HAuCl 4 ·3H 2 O (55g / 5mL water) was injected into the solution to react for 5min, then 200uL (2M) NaOH was added to generate the nuclei of nanoparticles instantaneously, and the reaction was stirred for 30min for nucleation and growth. Next, 1 mL of TEOS was added dropwise to the solution. Another 400 uL of NaOH (2M) was added to initiate co-polymerization. After 1.5 min, a thin purple coating of gold nanoparticles can be observed. The sol-gel ...

Embodiment 2

[0064] (1) Draw the standard curve of the organic dye EY first, take the aqueous solution of the organic dye EY with different concentrations, measure its fluorescence intensity, and draw the standard curve. (2) Au@SiO 2 The preparation of active nanoparticles with a core-shell structure, the preparation steps are as follows: First, take a three-neck flask and add 100mL of distilled water, 40mL of ethanol, and 0.640g of CTAB solid powder in turn, and stir the reaction at 600r / min in a water bath at 70°C for 10 minutes, the HAuCl 4 ·3H 2 O (55g / 5mL water) was injected into the solution to react for 5min, then 200uL (2M) NaOH was added to generate the nuclei of nanoparticles instantaneously, and the reaction was stirred for 30min for nucleation and growth. Next, 1 mL of TEOS was added dropwise to the solution. Another 400 uL of NaOH (2M) was added to initiate co-polymerization. After 1.5 min, a thin purple coating of gold nanoparticles can be observed. The sol-gel reaction ...

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Abstract

The invention discloses a new technology for efficiently treating organic wastewater, and belongs to the technical field of water pollution control. According to the new technology disclosed by the invention, nano-particles with an Au@SiO2 core-shell structure and persulphates are used as additives, and subjected to blending catalysis with the organic wastewater at first, then a high-voltage pulse plasma discharge technology is adopted, a great pulse current causes a local high temperature, substances with high oxidative activities are generated during a discharge process, ultraviolet radiation, high-energy electron bombardment and the like are co-generated, and refractory organic matters in the wastewater are removed through the synergistic effect of many active particles. Compared with the existing water treatment method, the introduced.SO4<2-> free radical is capable of efficiently and continuously treating various types of organic wastewater; the new multi-free-radical synergistic effect water treatment technology under the plasma environment provides a wide prospect for various refractory organic wastewater treatments.

Description

technical field [0001] The invention belongs to the field of water pollution prevention and control, and in particular relates to a water treatment method through the synergistic effect of multiple free radicals in a plasma environment. Background technique [0002] In recent years, organic wastewater with high concentration and stable structure has emerged continuously. How to effectively remove these refractory organic wastewater has become a hot issue in water treatment. Because of its extremely high oxidation potential (2.80EV), hydroxyl radical (OH) has a very strong oxidizing ability, and can undergo a rapid chain reaction with most organic pollutants, non-selectively oxidizing harmful substances into CO 2 、H 2 O or mineral salt, no secondary pollution. At present, many researchers at home and abroad have conducted research on the use of OH to treat organic wastewater. There are many ways to generate OH, mainly Fenton method, oxidative flocculation method, ozone me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F1/30
Inventor 林均品桂万元郝国建杨栩梁永锋李峰
Owner UNIV OF SCI & TECH BEIJING
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