常温下间甲酚的厌氧降解研究

Anaerobic Degradation of M-cresol at Ambient Temperature

采用常温(26～30℃)上流式厌氧污泥床(UASB)反应器处理间甲酚废水,研究常温下颗粒污泥厌氧降解间甲酚的能力,UASB反应器降解间甲酚的极限浓度以及产气量的变化,探讨了采用UASB厌氧处理间甲酚废水的主要影响因素。试验结果证明,当HRT为18 h时,UASB反应器可以降解的间甲酚浓度高达900mg/L(2 250 mgCOD/L),相应的容积负荷为3.38 gCOD/(L·d),间甲酚去除率达到96.2%。

Upflow anaerobic sludge bed（UASB） reactor was used for degradation of m-cresol wastewater,in order to study the capability of granular sludge to degrade m-cresol at mesophilic temperature,and investigate a threshold toxicity of m-cresol concentration and the change of the biogas.The result showes that,when the HRT is 18h,UASB reactor can degrade m-cresol at the concentration of 900mg/L（namely 2250mgCOD/L）,the corresponding volume loading is 3.38 g COD/（L·d） with removal rate 96.2%.In this paper,the temperature,pH,HRT and concetration of wastewater have effect on the COD and the m-cresol removals are investigated.