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Microwave-induced catalytic oxidization method of high-concentration organic wastewater

A technology for inducing catalysis and organic wastewater, applied in chemical instruments and methods, oxidized water/sewage treatment, physical/chemical process catalysts, etc., can solve the problems of complex catalyst preparation, large dosage, low recovery rate, etc., and achieve high strength, The effect of short balance time and easy regeneration

Pending Publication Date: 2018-05-04
北京科瑞博远科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this scheme has the disadvantages of complex catalyst preparation, large dosage and low recovery rate

Method used

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  • Microwave-induced catalytic oxidization method of high-concentration organic wastewater
  • Microwave-induced catalytic oxidization method of high-concentration organic wastewater
  • Microwave-induced catalytic oxidization method of high-concentration organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Preparation of Platinum Catalysts Supported by Carbon Nanotubes

[0038] Weigh 0.4 g of carbon nanotubes, add 200 ml of ethylene glycol, add 0.4 ml of 0.05 M chloroplatinic acid while stirring, ultrasonicate for 10 min, stir and slowly add NaOH saturated solution dropwise until the pH is 12. Put it into the microwave at a power of 700W and stabilize it for 75s, take it out and cool it to room temperature, filter it with suction, and wash it with acetone three times. Finally, put the obtained solid into a blast drying oven at 85° C. to dry, and the obtained sample is the platinum catalyst supported by carbon nanotubes.

[0039] Carbon nanotube supported platinum catalyst catalytic air oxidation laboratory simulation of organic wastewater

[0040]Prepare 2000mg / L phenol solution (COD about 5000mg / L) as simulated organic wastewater, take 30ml of the solution, add 0.12g of the above catalyst, ultrasonicate for 5min, stir and absorb at room temperature, then filter. In add...

Embodiment 2

[0042] Preparation of Copper Catalyst Supported by Carbon Nanotubes

[0043] Weigh 8.5g of copper nitrate trihydrate, add 70ml of water to make a solution, add 1.0g of carbon nanotubes, stir at room temperature, filter with suction, wash the filter cake with water, filter, and put it in a blast drying oven for drying. The above solid was taken out and put into a three-necked flask, placed in a microwave reactor, under a nitrogen flow, and stabilized at a microwave power of 700W for 2 minutes, to obtain a carbon nanotube-supported copper catalyst.

[0044] Carbon nanotube-supported copper catalyst catalyzed air oxidation laboratory simulated wastewater

[0045] Prepare 2000mg / L phenol solution (COD about 5000mg / L) as simulated organic wastewater, take 30ml of the solution, add 0.12g of the above catalyst, ultrasonicate for 5min, stir and absorb at room temperature, then filter. Add the above solid to 30 ml of the phenol solution, place it in a microwave reactor, let air in, ad...

Embodiment 3

[0047] Preparation of Iron Catalyst Supported by Carbon Nanotubes

[0048] Take 43.7ml of 65% concentrated nitric acid solution and add 70ml of water to form a solution, weigh 14.14g of ferric nitrate nonahydrate into the solution and stir to dissolve, add 1.0g of carbon nanotubes, stir, and filter. The filter cake is washed with water and then filtered. Dry in a blast drying oven. The above was taken out and put into a three-necked flask, placed in a microwave reactor, under a nitrogen flow, and stabilized for 2 minutes at a microwave power of 700W, to obtain a carbon nanotube-supported iron catalyst.

[0049] Carbon nanotube-supported iron catalyst catalyzed air oxidation laboratory simulated wastewater

[0050] Prepare 2000mg / L phenol solution (COD about 5000mg / L) as simulated organic wastewater, take 30ml of the solution, add 0.12g of the above catalyst, ultrasonicate for 5min, stir and absorb at room temperature, then filter. Another 30 ml of phenol solution was added ...

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Abstract

The invention provides a microwave-induced catalytic oxidization method of high-concentration organic wastewater. The method comprises the following steps: A, preparing activated carbon, silicon carbide, activated carbon fibers and carbon nanotube loaded metal catalysts through a dipping-microwave, dipping-roasting or ethylene glycol liquid phase chemical reduction method; and B, adding the obtained catalysts into wastewater containing organic substances; and charging oxidant gas or liquid for oxidizing the organic substances in the wastewater into inorganic small molecular compounds through microwave, thus achieving the purpose of reducing pollutant mission. According to the method for treating the organic wastewater, the activated carbon, silicon carbide, the activated carbon fibers andthe carbon nanotubes are used as the catalyst carriers; the service life is long; the catalyzing activity is high; the wastewater treatment condition is mild; and other advantages are also realized.

Description

technical field [0001] The invention relates to a method for microwave-induced catalytic oxidation of high-concentration organic wastewater, which belongs to the field of wastewater treatment. Background technique [0002] The development of modern industry has increased the types and quantities of industrial wastewater containing refractory organic pollutants. This type of wastewater usually contains refractory, toxic, harmful, organic pollutants, ammonia nitrogen compounds, suspended solids and other pollutants. The degree of pollution to the environment It is very large, and it is difficult to meet the technical and economic requirements by conventional biological or physical and chemical purification methods. Therefore, the purification and treatment of this kind of industrial organic wastewater has become one of the difficult problems in the field of environmental protection at home and abroad, and has attracted more and more attention. [0003] At present, organic was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/30C02F1/72B01J23/42B01J23/72B01J23/745C02F101/30
CPCC02F1/302C02F1/725B01J23/42B01J23/72B01J23/745C02F2101/30B01J35/33
Inventor 徐更张桂华周旭康谢博亮周玉
Owner 北京科瑞博远科技有限公司
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