Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (12): 19-24.

Previous Articles     Next Articles

Oxidation Pre-TreatInent of Yeast Wastewater by Fenton Reagent

Zhang Ya-ping  Wei Chao-hai  Wu Chao fei  Wang Wen-xiang  Qian Zhan   

  1. College of Environmental Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2005-02-25 Online:2005-12-25 Published:2005-12-25
  • Contact: 张亚平(1978-)，男，博士生，主要从事废水高级氧化技术研究 E-mail:Cechwei@scut.edu.cn
  • About author:张亚平(1978-)，男，博士生，主要从事废水高级氧化技术研究
  • Supported by:

    国家自然科学基金资助项目(29877009；20277010)

PDF

966

Abstract:

The 0xidation pre-treatment of yeast wastewater with high colour,salinity and CODCrwas carried out u-sing Fent0n reagent.By investigating the composition variation of the wastewater,it is found that the CODCr and the colour rem0val 0f the wastewater decrease respectively from 15700mg/L to 3 lOOmg/L and from 1600 units to 16 u-nits when the 0xidati0n pre-treatment is carried out at 25 oC for 90 min,with an initial pH of 2.5,a H2 O2 mass con-centrati0n 0f 600 mg/L and a Fe mass concentration of 200 mg/L,while the BOD5/CODCrratio increases from 0.17 t0 0.46. M0re0ver,a linear relationship between the colour removal and the CODCr is revealed.The results of GC/MS analvsis indicate that the chemical oxidation by Fenton reagent changes the structures of some refractory substances such as caramel,melanoidins and polyphenol,thus making the biodegradation feasible.

Key words: yeast wastewater, Fenton reagent, catalytic oxidation