(中南大学 冶金科学与工程学院，长沙 410083)
摘 要: 为揭示上流式厌氧反应器(UASB)改性污泥处理含铬废水过程中硫酸根还原与化学需氧量(COD)的去除、 微生物增长之间的定量关系， 在合理的假设及分析下， 通过理论推导建立了COD降解与硫酸根还原的动力学模型， 并通过实验测得了动力学参数。 用不同硫酸根浓度下UASB改性污泥体系处理含铬废水过程中的数据对所建动力学模型进行了验证， S2-的实测值和理论值拟合很好(R=0.986 7)， 表明所建动力学模型可以描述UASB改性污泥处理含铬废水过程。
关键字: 改性污泥; 含铬废水; 上流式厌氧反应器; 动力学模型
adjusted activated sludge in UASB
（School of Metallurgy Science and Engineering,
Central South University, Changsha 410083, China）
Abstract: Quantitative relationship among sulfate-reducing, chemical oxygen demand(COD)-removal and microorganism-growth was investigated, which is of importance for chromium-containing wastewater treatment in upflow anaerobic sludge blanket (UASB). Then, with reasonable assumption and analysis, dynamic model of sulfate-reducing and COD-removal was constructed through theoretical deduction, accordingly dynamic parameters were deter mined by experiments. Furthermore, the dynamic model was testified by actual experimental data, the measured and theoretical values of S2- in UASB under different sulfate concentrations of input are accordant (R=0.986 7), which indicates that the model can be used to describe the process of chromium-containing wastewater treatment in UASB completely.
Key words: adjusted activated sludge; chromium-containing wastewater; upflow anaerobic sludge blanket(UASB); dynamic model
