Journal of Environmental Engineering Technology ›› 2011, Vol. 1 ›› Issue (4): 289-294.doi: 10.3969/j.issn.1674-991X.2011.04.048

• Special Issue:National Major Science and Technology Program for Water Pollution Control & Treatment • Previous Articles     Next Articles

Kinetics analysis of Wet Air Oxidation of Fosfomycin Pharmaceutical Wastewater

QIU Guang-lei1,2,SONG Yong-hui1,2,ZENG Ping1,XIAO Shu-hu1,DUAN Liang1   

  1. 1. Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences
    2. College of Water Sciences, Beijing Normal University
  • Supported by:

    ;the Sino-French International Science & Technology Cooperation Project

  • Received:2011-03-25 Revised:2011-05-04 Online:2011-07-20 Published:2011-07-11
  • Contact: SONG Yong-hui E-mail:songyh@craes.org.cn

Abstract: High concentration of fosfomycin pharmaceutical wastewater was treated by wet air oxidation (WAO). The kinetic characteristics of the removal of total organic phosphorus (TOP) and chemical oxygen demand (CODCr) in WAO of fosfomycin pharmaceutical wastewater were investigated. The effects of reaction temperature and oxygen partial pressure on TOP and CODCr removal were quantified. The results showed that the removal of CODCr and TOP in WAO was divided into fast and slow reaction steps and the removal process was well accorded with piecewise first-order kinetic model. Generally, the removal rates of TOP and CODCr increased with increasing reaction temperature and oxygen partial pressure in both fast and slow reaction steps, and the removal rates of the slow reaction step were found to be less sensitive to reaction temperature and oxygen partial pressure. According to Arrhenius equation, the activated energies for TOP oxidation were Eafast 68.6 and Easlow 44.7 kJ/mol, and for CODCr removal were Eafast 41.0 and Easlow 24.5 kJ/mol at 1.0 MPa oxygen partial pressure.

Key words: wet air oxidation, fosfomycin pharmaceutical wastewater, kinetics, organic phosphorus