苯酚的厌氧生物处理

Anaerobic biological treatment of phenol

采用不断增加苯酚浓度而降低葡萄糖浓度的方法可驯化厌氧污泥中的微生物，使厌氧污泥最终以苯酚为唯一碳源生长，可显著提高厌氧污泥降解苯酚的能力；对苯酚间歇厌氧降解过程进行了分析。苯酚浓度在0～1680mg／L范围内，其厌氧降解过程符合一级动力学。Aiba模型、Haldane模型和Teisser模型均可很好地描述处于对数期时厌氧污泥的比生长速率与初始底物浓度之间的关系，其中以Teisser模型模拟的效果最好。将驯化污泥接种于UASB中可实现对含酚废水处理的连续运行，最大的有机负荷达2gCOD／（L·d），稳定运行时苯酚的去除率可维持在96％以上。

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.