Centre for Environment, Indian Institute of Technology Guwahati, Assam 781039, India.
J Hazard Mater. 2011 Jun 15;190(1-3):260-7. doi: 10.1016/j.jhazmat.2011.03.038. Epub 2011 Mar 21.
A simulated wastewater containing phenol (2500 mg/L), thiocyanate and ammonia-nitrogen (500 mg/L) was treated in an anaerobic (R1)-anoxic (R2)-aerobic (R3) moving bed biofilm reactor system at different hydraulic retention time (HRT) intervals (total HRT 3-8 days, R1: 1.5-4 days; R2: 0.75-2 days and R3: 0.75-2 days) and feed thiocyanate (SCN(-)) concentrations (110-600 mg/L) to determine substrate removal kinetics. In R1, phenol and COD reduction and specific methanogenic activity were inhibited due to the increase of SCN(-) in feed. Bhatia et al. model having inbuilt provision of process inhibition described the kinetics of COD and phenol utilization with maximum utilization rates of 0.398 day(-1) and 0.486 day(-1), respectively. In R2 and R3 modified Stover-Kincannon model was suitable to describe substrate utilization. In R2 respective maximum SCN(-), phenol, COD and NO(3)(-)-N utilization rates were 0.23, 5.28, 37.7 and 11.82 g/L day, respectively. In aerobic reactor R3, COD, SCN(-) and NH(4)(+)-N removal rates were, respectively, 10.53, 1.89, and 2.17 g/L day. The minimum total HRT of three-stage system was recommended as 4 days.
采用厌氧（R1）-缺氧（R2）-好氧（R3）移动床生物膜反应器系统，在不同水力停留时间（HRT）（总 HRT 为 3-8 天，R1：1.5-4 天；R2：0.75-2 天和 R3：0.75-2 天）和不同进料硫氰酸盐（SCN(-)）浓度（110-600 mg/L）下处理含苯酚（2500 mg/L）、硫氰酸盐和氨氮（500 mg/L）的模拟废水，以确定基质去除动力学。在 R1 中，由于进料中 SCN(-)的增加，苯酚和 COD 的还原以及特定产甲烷活性受到抑制。具有内置过程抑制功能的 Bhatia 模型描述了 COD 和苯酚利用的动力学，最大利用速率分别为 0.398 天(-1)和 0.486 天(-1)。在 R2 和 R3 中，改进的 Stover-Kincannon 模型适合描述基质的利用。在 R2 中，相应的最大 SCN(-)、苯酚、COD 和 NO(3)(-)-N 利用速率分别为 0.23、5.28、37.7 和 11.82 g/L 天。在好氧反应器 R3 中，COD、SCN(-)和 NH(4)(+)-N 的去除速率分别为 10.53、1.89 和 2.17 g/L 天。建议三阶段系统的最小总 HRT 为 4 天。
