Method for oxidation degradation of wastewater organic pollutant by activating hydrogen peroxide

A technology for organic pollutants and oxidative degradation is applied in the field of oxidative degradation of organic pollutants in wastewater by activating hydrogen peroxide, which can solve the problems of complex preparation and high price, and achieve the effects of simple reaction system, no secondary pollution and low treatment cost.

Inactive Publication Date: 2009-08-12
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims at the shortcomings of the catalysts in the prior art, such as complex preparation and high price, and provides a catalyst that uses bicarbonate as the cata...

Method used

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Examples

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Effect test

example 1

[0009] Example 1. Add 50mL of methylene blue wastewater with a concentration of 200mg / L and 2.1g of sodium bicarbonate into a conical flask, stir magnetically, keep a constant reaction temperature of 25°C, then add 0.5mL of 30% hydrogen peroxide, and after 4 hours of reaction, the wastewater The decolorization rate is 100%, and the COD removal rate is 40%.

example 2

[0010] Example 2. According to the operation steps of the above-mentioned embodiment 1, 50mL concentration is that 100mg / L methyl orange wastewater and 8.4g ammonium bicarbonate are added in the Erlenmeyer flask together, magnetically stirred, keep constant reaction temperature 70 ℃, then add 30 % hydrogen peroxide 0.5mL starts to react, and after reacting for 0.5 hour, the decolorization rate is 100%.

example 3

[0011] Example 3. According to the operation procedure of above-mentioned embodiment 1, 50mL concentration is that the dimethoate waste water of 200mg / L and 2.1g potassium bicarbonate join in the conical flask together, magnetic stirring, keep constant reaction temperature 25 ℃, then add 30% Hydrogen peroxide 0.5mL starts to react, and after reacting 2 hours, dimethoate removal rate is 83%.

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Abstract

The invention relates to a method which uses activated oxyful for oxidizing and degrading organic pollutants of waste water. Aiming at overcoming the defect of the complex catalyst preparation of the prior art, the invention provides a method, which is as follows: oxyful with a certain concentration and a catalyst or auxiliary catalyst acting as the activated oxyful are blended with organic wastewater to be treated, and then stirring is carried out for reaction. The catalyst acting as the activated oxyful is a supercarbonate which takes alkali metal lithium, sodium, potassium ion, alkaline-earth metal magnesium, calcium, cesium, barium ion or NH4 as an activated cation; and the auxiliary catalyst takes transition metal iron, manganese or copper as an activated cation and takes chloride ions, nitrate ion, or sulfate ion as an anionic salt. The method moderates reaction condition and has full decolorization and deodorizing effect on the treated sludge; and the COD removal rate can reach 25%-60%.

Description

technical field [0001] The invention relates to a method for oxidatively degrading organic pollutants in wastewater by using activated hydrogen peroxide, in particular to a method for degrading organic pollutants in wastewater by using bicarbonate as a catalyst to activate hydrogen peroxide. Background technique [0002] With the continuous expansion of production scale and the rapid development of industrial technology, pollution sources containing toxic, harmful and refractory organic wastewater are increasing. The methods for treating such wastewater mainly include biological, physical and chemical methods. Using existing biological treatment methods, it is difficult for organic wastewater with poor biodegradability or biological toxicity; physical treatment only transfers pollutants from one place to another, and does not remove pollutants in essence; chemical methods can It has good application prospects to directly mineralize pollutants or improve the biodegradability...

Claims

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Application Information

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IPC IPC(8): C02F1/72B01J27/232
Inventor 尹国川徐爱华熊辉
Owner HUAZHONG UNIV OF SCI & TECH
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