Degradation of Organics from Laboratory Wastewater by Ultrasonic/Fenton Process

Abstract:

Organics in laboratory wastewater were treated by ultrasonic/Fenton method. COD degradation of laboratory wastewater was studied, which was affected by some factors such as ultrasonic frequency, ultrasonic power, the dosage of H₂O₂ and Fe²⁺, and the initial pH. Orthogonal experiment was carried out. The results of degradation by ultrasonic/Fenton method were compared with those results when ultrasonic or Fenton was used to degrade organics respectively. The results show that ultrasonic/Fenton can effectively degrade the organic pollutants in laboratory wastewater, and the degradation efficiency is higher than that of each process alone. The optimal conditions are as follows: frequency is 45kHz, power is 120W, the concentration of H₂O₂ is 0.71mmol/L, the concentration of Fe²⁺ is 0.03mmol/L and pH is 3 in the experiment when COD of 50mL laboratory wastewater is 21972mg/L.

• Periodical: Applied Mechanics and Materials (Volumes 395-396)
• Pages: 617-620
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.395-396.617
• Online since: September 2013
• Authors: Xiao Lin Bai, Liang Li
• Keywords: Laboratory Wastewater, Organics, Ultrasonic/Fenton

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