Effect of fermentation liquid from food waste as a carbon source for enhancing denitrification in wastewater treatment

Yongmei Zhang, Xiaochang C. Wang, Zhe Cheng, Yuyou Li, Jialing Tang

研究成果: Article査読

90 被引用数 (Scopus)

抄録

Food wastes were used for anaerobic fermentation to prepare carbon sources for enhancing nitrogen removal in wastewater treatment. Under anaerobic conditions without pH adjustment, the fermentation liquid from food wastes (FLFW) with a high organic acid content was produced at room temperature (25 °C) and initial solid concentration of 13%. Using FLFW as the sole carbon source of artificial wastewater for biological treatment by sequence batch operation, maximized denitrification (with a denitrification rate of VDN = 12.89mg/gVSS h and a denitrification potential of PDN = 0.174 gN/gCOD) could be achieved at a COD/TN ratio of 6. The readily biodegradable fraction in the FLFW was evaluated as 58.35%. By comparing FLFW with glucose and sodium acetate, two commonly used chemical carbon sources, FLFW showed a denitrification result similar to sodium acetate but much better than glucose in terms of total nitrogen removal, VDN, PDN, organic matter consumption rate (VCOD) and heterotrophy anoxic yield coefficient (YH).

本文言語English
ページ(範囲)689-696
ページ数8
ジャーナルChemosphere
144
DOI
出版ステータスPublished - 2016 2 1

ASJC Scopus subject areas

  • 環境工学
  • 環境化学
  • 化学 (全般)
  • 汚染
  • 健康、毒物学および変異誘発

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