Anaerobic biological treatment of phenol
苯酚的厌氧生物处理

Anaerobic sludge was pre-cultured in a medium in which phenol concentration increased and glucose concentration decreased gradually. Finally, phenol was used as the sole carbon source. Thus, the ability of anaerobic sludge for degrading phenol was enhanced remarkably. The process of anaerobic phenol degradation was analyzed in a batch experiment. At phenol concentration ranging from 0 to 1.680 mg/L, the consumption rate of phenol was found to be the first order. Aiba model, Haldane model and Teisser model can all be used to describe the relation between specific growth rate of anaerobic sludge in logarithmic phase and initial substrate concentration. Teisser model was found to be most suitable model. The upflow anaerobic sludge blanket (UASB) reactor treated wastewater containing phenol could be operated steadily at a maximum load of 2.0 g COD/(L·d) after the acclimated sludge was inoculated. The phenol removal rate was above 96% in the operation of UASB reactor.