Method for ozonizing phenol wastewater by taking ceramic powder material as catalyst

A technology of ceramic powder and ozonated water, which is applied in the field of environmental protection and environmental catalysis, to achieve the effect of accelerating the degradation rate and improving the degree of mineralization

Inactive Publication Date: 2010-10-27
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there have been no reports on the ozonation wastewater treatment of ceramic powder materials at home and abroad.

Method used

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  • Method for ozonizing phenol wastewater by taking ceramic powder material as catalyst
  • Method for ozonizing phenol wastewater by taking ceramic powder material as catalyst
  • Method for ozonizing phenol wastewater by taking ceramic powder material as catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The formed ordinary honeycomb ceramics are sieved (100 mesh) after knocking and ball milling to obtain ceramic powder materials. The XRD diffraction results are shown in figure 1 , through nitrogen low-temperature adsorption-desorption isotherm, the BET specific surface area of ​​the ceramic powder is 1.30m 2 g -1 . The surface hydroxyl density of the ceramic powder material obtained by chemical titration is 1.63×10 -5 mole g -1 . The pH of the ceramic powder was determined experimentally pzc is 6.52.

Embodiment 2

[0025] The initial concentration of phenol in 200ml is 100mg L -1 In the simulated wastewater, add 1.0g of ceramic powder material, start stirring, and pass through the ozone flow rate of 0.40mg min at the reaction temperature of 20°C -1 Ozone, record the concentration of phenol at different times. The result is as figure 2 As shown, line a is ozonation alone (no catalyst), and line b is ozonation catalyzed by ceramic powder materials. It indicated that the addition of nano-zinc oxide significantly promoted the degradation of phenol.

Embodiment 3

[0027] The initial concentration of phenol in 200ml is 100mg L -1 In the simulated wastewater, add 1.0g of ceramic powder material, start stirring, and pass through the ozone flow rate of 0.40mg min at the reaction temperature of 20°C -1 Ozone, record the concentration of phenol at different times. The result is as image 3 As shown, line a is ozonation alone (no catalyst), and line b is ozonation catalyzed by ceramic powder materials. It indicated that the addition of nano-zinc oxide significantly promoted the degradation of phenol.

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PUM

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Abstract

The invention relates to a method for ozonizing phenol wastewater by taking a ceramic powder material as a catalyst, and belongs to the technical field of environmental protection and environmental catalysis. The ceramic powder material serving as the catalyst is added into an ozonization water treatment system which contains the phenol wastewater to promote the degradation of phenol organic pollutants. The invention provides a novel ozonization water treatment method. Compared with a ceramic molding material, the ceramic powder material has the characteristics of small scale, high dispersibility, and wide application prospect in ozonization water treatment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection and environmental catalysis, and relates to a catalytic ozonation treatment method for phenol wastewater. Background technique [0002] At present, with the development of the industrial and agricultural economy, the discharge of sewage containing organic pollutants is increasing, especially the sewage from chemical, chemical, pesticide, printing and dyeing industries, which contains a variety of aromatic organic pollutants that are highly toxic and difficult to degrade. It poses a great threat to the ecological environment and people's life safety and health. Phenol is one of the typical pollutants, which has been listed as one of the priority pollutants by the U.S. Environmental Protection Agency, and the treatment of phenol-containing wastewater has received increasing attention (Liotta LF, Gruttadauria M, Carlo G D et al., Journal of Hazardous Materials, 2009, 162, 588-606). ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/78
Inventor 董玉明蒋平平王光丽陈元元刘颖张帆赵金龙
Owner JIANGNAN UNIV
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