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The Role of Ozone Generators in Industrial Wastewater Treatment and Ozone-Combined Processes

2021-03-22

The Role of Ozone Generators in Industrial Wastewater Treatment and Ozone-Combined Processes

Industrial wastewater treatment
Industrial Wastewater Treatment

Petroleum and petrochemical wastewater is characterized by complex composition, high concentration, and poor biodegradability. Ozone can effectively remove toxic and harmful substances, degrade benzene, phenols, and their derivatives, enhance the biodegradability of wastewater, and also exhibit decolorization and odor-removal effects. Wastewater discharged from industries such as dyeing, pharmaceuticals, pigments, electronics, and chemical manufacturing often contains recalcitrant organic compounds or toxic substances that are difficult to biodegrade. Thanks to its powerful oxidizing capacity, ozone can break down these refractory organic compounds, degrade toxic and harmful substances, remove color and odors from water, and bring wastewater up to discharge or reuse standards.

Ozone + Combined Process
Ozone + Combined Process
Due to the high COD concentration, direct ozone oxidation is economically inefficient; therefore, a combined process is typically employed.
To enhance biodegradability using ozone, common processes include ozone + BAF, ozone + catalyst, ozone + H2O2, MBR + ozone, and ozone + BAC.

The role of ozone
Ozone Function

Breaks down large-molecular organic compounds that are difficult to biodegrade;
Open-loop, decomposing benzene, phenol, and their derivatives;
Detoxification, reducing the toxicity of wastewater containing cyanide, pesticides, and other harmful substances;
Decolorization, disrupting the hair-color gene.
 

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Municipal Wastewater Treatment and Reuse: Ozone Oxidation Process and Its Functions