Green and efficient regeneration method of activated carbon in brine acidification-activated carbon adsorption deodorization process

By employing the aeration and washing, ozone oxidation regeneration, and aeration and washing dealkali removal steps in the brine acidification-activated carbon adsorption deodorization process, the problems of high-temperature loss and harmful substance residue in the activated carbon regeneration process are solved. This achieves green and efficient regeneration of activated carbon and reuse of waste liquid, making it suitable for brine deodorization processes and reducing production costs.

CN117772166BActive Publication Date: 2026-06-12SNOWSKY SALT IND GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SNOWSKY SALT IND GRP CO LTD
Filing Date
2024-01-31
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing activated carbon regeneration methods suffer from problems such as high-temperature losses, harmful substance residues, incomplete regeneration, and high costs during brine deodorization, making it difficult to meet the activated carbon regeneration needs after brine deodorization.

⚗Method used

The brine acidification-activated carbon adsorption deodorization process is adopted, which involves steps of aeration and water washing for desalination, ozone oxidation for regeneration, and aeration and water washing for dealkalization. Under alkaline conditions, ozone is used to oxidize activated carbon, and the regenerated waste liquid and waste materials are recycled for brine extraction, thus achieving green and efficient regeneration of activated carbon.

🎯Benefits of technology

It avoids the loss of activated carbon caused by high-temperature burning, shortens the regeneration and activation time, allows for the reuse of waste liquid and waste materials, reduces treatment costs, and achieves efficient regeneration and environmental friendliness of activated carbon. It is suitable for activated carbon adsorption and deodorization processes in acidified brine.

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Abstract

The application discloses a green and efficient regeneration method of activated carbon in a brine acidification-activated carbon adsorption deodorization process, and is characterized by comprising the following steps: S1, water washing and salt removal through aeration; S2, ozone oxidation regeneration: adding an alkali liquor with the same volume as the activated carbon into an activated carbon adsorption tower, and then blowing ozone into the bottom of the activated carbon adsorption tower, so that the ozone is subjected to oxidation reaction with the activated carbon under the alkaline condition, and then waste alkali liquor is discharged; S3, water washing and alkali removal through aeration; S4, waste liquid reuse; and S5, waste material reuse. The application can not only avoid the loss of activated carbon caused by high-temperature burning, but also has short regeneration time of the activated carbon and no harmful substance residue, and is very suitable for the regeneration of the activated carbon in the acidification brine activated carbon adsorption deodorization process. In addition, the waste liquid and the waste material in the regeneration process of the activated carbon can be reused, the whole process is free of toxic and harmful waste emission, is green and environment-friendly, has low treatment cost, high efficiency, good economy, environmental protection and feasibility.
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