Method for treating high-COD (chemical oxygen demand) organic wastewater through microwave catalytic oxidation

A technology for microwave catalytic oxidation and organic wastewater, applied in oxidized water/sewage treatment, chemical instruments and methods, light water/sewage treatment, etc., can solve the problems of high operating costs and high prices, and achieve small footprint and low cost , Efficient removal effect

Inactive Publication Date: 2014-03-26
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This will consume a certain amount of oxidant (hydrogen peroxide). Due to the high price of hydrogen peroxide, high operating costs will be incurred due to the consumption of a large amount of hydrogen peroxide during the catalytic oxidation of wastewater, which is unbearable for some enterprises.

Method used

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  • Method for treating high-COD (chemical oxygen demand) organic wastewater through microwave catalytic oxidation
  • Method for treating high-COD (chemical oxygen demand) organic wastewater through microwave catalytic oxidation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Using 4.5g of microwave catalyst supported by metal copper oxide on activated carbon, measure 150ml of organic wastewater with an initial COD value of 6752.13mg / L, and maintain a pH value between 8.0 and 9.0 at a microwave power of 400W. After a reaction time of 3 hours, take the above The COD value of the serum was detected by the national standard analysis method to be 305.62, and then the degradation rate was calculated to be 95.47%.

Embodiment 2

[0047] Using 4.5g of microwave catalyst supported by metal copper oxide on activated carbon, measure 150ml of organic wastewater with an initial COD value of 6988.92mg / L, and maintain a pH value between 8.0 and 9.0 at a microwave power of 400W. After a reaction time of 3 hours, take the above The COD value of the serum was detected by the national standard analysis method to be 269.07mg / L, and then the degradation rate was calculated to be 96.15%.

Embodiment 3

[0049] Using 4.5g of microwave catalyst supported by metal manganese oxide on activated carbon, measure 150ml of organic wastewater with an initial COD value of 9838.08mg / L, and maintain a pH value between 8.0 and 9.0 at a microwave power of 400W. After a reaction time of 4 hours, take the above The COD value of the serum was detected by the national standard analysis method to be 777.64mg / L, and then the degradation rate was calculated to be 92.09%.

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Abstract

The invention relates to a method for treating high-COD (chemical oxygen demand) organic wastewater through microwave catalytic oxidation. According to the method, microwaves are radiated to the surface of a microwave catalyst to produce a strong oxidizing group for oxidizing the high-COD organic wastewater, so that organic matters such as organic amine in the wastewater can be oxidized to be degraded into CO2 and water or inorganic acid radical ions. The method disclosed by the invention has the advantages of efficiently removing the organic matters and reducing the COD value of the high-concentration industrial wastewater from larger than 5,000-60,000 to smaller than 100 or facilitating biochemical degradation. In a use process of the method, strong oxidants such as hydrogen peroxide, O3 and ClO2 activated peroxysulphate do not need to be added and is a novel organic wastewater treatment method which is high in efficiency, low in energy consumption, low in cost, favorable for industrialization and secondary-pollution-free, occupies a small area and has a simple technology; the difficulties in biochemical treatment of high-concentration and high-salinity COD organic wastewater in the industries such as printing and dyeing, pesticides, pharmacy and chemical engineering are solved.

Description

technical field [0001] The invention belongs to the technical field of high-concentration organic wastewater treatment, and relates to a method for microwave catalytic oxidation treatment of high-COD organic wastewater. Background technique [0002] Water is the basic substance for human survival, the source of life, and an indispensable substance in various industrial production and crop growth. In the process of production and life, human beings not only consume water resources in quantity, but also have adverse effects on water quality, resulting in various pollutions and affecting water quality safety, especially when impurities contained in domestic sewage and industrial wastewater enter natural water bodies. It even completely changes the original material balance of natural water bodies, destroys the natural environment around human beings, and has a bad impact on the life and production of human society. At present, it is mainly organic pollutants that affect the qu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/72C02F101/30
Inventor 周继承杨叶兵殷诚龙伟
Owner XIANGTAN UNIV
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