上流式厌氧污泥床（UASB）反应器中厌氧颗粒污泥对五氯苯酚的吸附、解吸及生物降解研究。
Studies on adsorption, desorption and biodegradation of pentachlorophenol by the anaerobic granular sludge in an upflow anaerobic sludge blanket (UASB) reactor.
作者信息
Shen Dong-Sheng, Liu Xin-Wen, He Yong-Hua
机构信息
Department of Environmental engineering, Zhejiang University, 268 Kaixuan Road, HangZhou 310029, PR China.
出版信息
J Hazard Mater. 2005 Oct 17;125(1-3):231-6. doi: 10.1016/j.jhazmat.2005.05.034.
PCP-degrading anaerobic granular sludge could be formed in an upflow anaerobic sludge blanket (UASB) reactor that was seeded with anaerobic sludge acclimated to chlorophenol. When hydraulic retention time (HRT) was 20-22 h and PCP loading rate was 200-220 mgL(-1)d(-1), the wastewater containing 170-180 mgL(-1) PCP could be treated effectively in UASB reactor, and PCP removal rate reached up to 99.5%. PCP adsorption and desorption by anaerobic granular sludge follow Freundlich isothermal equation and part of adsorption capacity was not reversible. And the isothermal equation could well describe the variation law of PCP adsorption and desorption by anaerobic granular sludge. The results indicated that the principal removal mechanism of PCP was biodegradation by anaerobic granular sludge, but not adsorption or volatilization.
在接种了适应氯酚的厌氧污泥的上流式厌氧污泥床（UASB）反应器中，可以形成降解五氯苯酚（PCP）的厌氧颗粒污泥。当水力停留时间（HRT）为20 - 22小时且PCP负荷率为200 - 220 mgL⁻¹d⁻¹时，含有170 - 180 mgL⁻¹ PCP的废水在UASB反应器中能够得到有效处理，PCP去除率高达99.5%。厌氧颗粒污泥对PCP的吸附和解吸遵循弗罗因德利希等温方程，且部分吸附容量是不可逆的。该等温方程能够很好地描述厌氧颗粒污泥对PCP吸附和解吸的变化规律。结果表明，PCP的主要去除机制是厌氧颗粒污泥的生物降解作用，而非吸附或挥发作用。
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