Comparison between fermentation liquid of food-waste and sodium acetate, glucose on denitrification potential

Zhe Cheng, Xiaochang Wang, Yongmei Zhang, Yuyou Li, Ning Qiao

Research output: Contribution to journalArticle

Abstract

Batch experiments were carried out to investigate the denitrification capacity of fermentation liquid of food-waste by comparison with sodium acetate and glucose. Rates of NOx--N reduction were compared under different COD/N ratios. It was found that, as electron donor, food-waste could meet the demand of dinitrification when the COD/N was 6.5, with PD = 0.146 g NOx--N /g COD.Kinetic equations were used to simulate each phase of dinitrification under COD/N=5.0, results showed that NUR achieved to 7.44 mg NOx--N/(g VSS·h) at the Ss metabolic phase for food-waste. And specific denitrification rate of food-waste was 0.77 times of sodium acetate and 2.1 times of glucose. So food-waste can be classified into readily organic substances.

Original languageEnglish
Pages (from-to)362-366
Number of pages5
JournalChinese Journal of Environmental Engineering
Volume9
Issue number1
Publication statusPublished - 2015 Jan 5

Keywords

  • Acetate
  • C/NASM
  • Denitrification potential
  • Denitrification rate
  • Food-waste
  • Glucose

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Water Science and Technology
  • Waste Management and Disposal
  • Pollution

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