Sign in Subscribe
Beijing University

High-Gravity Ozonation Technology Shows Promise in Treating High-Salinity Dye Wastewater

Strategic Insights

— 1 min read

Researchers from the Beijing University of Chemical Technology have made a breakthrough in the treatment of high-salinity dye wastewater, using a high-gravity ozonation technology. According to a study, the presence of high concentrations of inorganic salts significantly challenges the treatment of dye wastewater. The researchers employed the high-gravity ozonation technology to degrade the Acid Red 73 (AR73) dye wastewater with high-salinity. Financial support for the research came from the National Natural Science Foundation of China.

Key Takeaways:

  • The high-gravity ozonation technology was used to treat Acid Red 73 (AR73) dye wastewater with high-salinity, achieving an ozone absorption rate of 75.7% and AR73 removal rate of 91.3%.
  • The optimal treatment effect was achieved at a detained liquid volume of 150 mL, with the cod removal rate reaching 32.4%.
  • The presence of high concentrations of inorganic salts significantly challenges the treatment of dye wastewater, making it essential to develop efficient treatment methods.
  • The RPB/O3/liquid detention process provides an efficient method for the treatment of high-salinity dye wastewater.
  • The presence of salts such as K2HPO4, (NH4)2SO4, Na2CO3, NaHCO3, and Na2SO4 with concentrations up to 50 g/L negatively impacts the treatment effect of the wastewater in the RPB/O3 process.
  • The study investigated the impact of inorganic salts on the treatment effect of the wastewater in the RPB/O3 process and explored liquid detention phenomena in the RPB to enhance the treatment of the AR73 wastewater.

Statistics:

  • Ozone absorption rate: 75.7%
  • AR73 removal rate: 91.3%
  • COD removal rate: 32.4%
  • Increase in ozone absorption rate: 103.5%
  • Increase in AR73 removal rate: 34.9%
  • Increase in COD removal rate: 106.3%
  • Optimal treatment effect achieved at: 150 mL liquid detained volume

Sources:

  • Ozonation of the Acid Red 73 Dye Wastewater With High-salinity In a Rotating Packed Bed. Ozone: Science & Engineering, 2025.
  • National Natural Science Foundation of China (NSFC)
  • Lei Shao, Beijing University of Chemical Technology
  • Liping Shi, Liyuan Feng, Tianyang Wu, Yang Xiang, and Jimmy Yun.

Read more