Degradation of phenol in wastewater in an upflow anaerobic sludge blanket reactor

Herbert H.P. Fang, Tong Chen, Yu You Li, Ho Kwong Chui

研究成果: Article査読

146 被引用数 (Scopus)

抄録

Phenol in wastewater could be effectively degraded in an upflow anaerobic sludge blanket (UASB) reactor. With a 1:1 effluent recycle ratio, over 97% of phenol was removed at 37°C and pH 6.9-7.5 with 12 h of hydraulic retention time for phenol concentration up to 1260 mg·1-1, corresponding to 3000 mg·1-1 of chemical oxygen demand (COD) and a loading rate of 6 g-COD·1-1·day-1. The seed sludge took about 7 wk to develop the phenol-degrading capability which was sensitive to shocks. The bioactivity deteriorated readily when the granules were exposed to sudden changes of temperature and loading. Although the damage was not permanent, the recovery of bioactivity was gradual and lengthy. At 6 g-COD·1-1·day-1, each gram of granules was able to convert 0.49 g of COD into methane daily. On the average, about 94.7% of the total COD removed was converted to methane, while the rest was converted to biomass with a net yield of 0.038 g-VSS·(g-COD-removed)-1. Electron micrographs show that the granules were composed of, among others, Syntrophus buswellii-, Methanothrix-, Methanospirillum- and Methanobrevibacter-like bacteria.

本文言語English
ページ(範囲)1353-1360
ページ数8
ジャーナルWater Research
30
6
DOI
出版ステータスPublished - 1996 6
外部発表はい

ASJC Scopus subject areas

  • 生態モデリング
  • 水の科学と技術
  • 廃棄物管理と処理
  • 汚染

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