Centre for the Environment, Indian Institute of Technology Guwahati, Assam, India.
Environ Technol. 2013 Jan-Feb;34(1-4):245-56. doi: 10.1080/09593330.2012.692712.
Performance of a fed batch moving-bed reactor system arranged in anaerobic (B1)-anoxic (B2)-aerobic (B3) mode was investigated using cycle time (18-36h), gradual fill time (total 5-18.5 h; B1: 1-3.7 h; B2 and B3: 2-7.4 h each) and instantaneous fill time as variable parameters. During cycle time variation, total hydraulic retention time changed from 4.5 to 9 days (B1: 2.25-4.5 days; B2 and B3: 1.13-2.25 days each). Synthetic wastewater contained phenol (1500 mg/l), thiocyanate (SCN(-)800 mg/l at gradual fill and 100 mg/l at instantaneous fill) and ammonia (NH4(+)-N 500 mg/l). Phenol and chemical oxygen demand (COD) removals in B1 increased with increase in cycle time and gradual shorter filling showed higher performance than gradual long filling and instantaneous filling. In B2, simultaneous removals of phenol, SCN, COD and NO3(-)-N were achieved and effects of cycle time and fill times were not profound. In B3, NH4(+)-N removal efficiency increased with increase in both cycle time and gradual fill time. The minimum cycle time of 30 h and total hydraulic retention time of 7.5 days and total fill time of 12.5 h were recommended. A modified Stover-Kincannon model showed the highest correlation for removal of substrates in B1, B2 and B3.
采用周期时间（18-36 小时）、逐渐填充时间（总 5-18.5 小时；B1：1-3.7 小时；B2 和 B3：每段 2-7.4 小时）和瞬时填充时间作为变量参数，研究了按厌氧（B1）-缺氧（B2）-好氧（B3）模式排列的分批移动床反应器系统的性能。在周期时间变化过程中，总水力停留时间从 4.5 天变为 9 天（B1：2.25-4.5 天；B2 和 B3：各为 1.13-2.25 天）。合成废水中含有苯酚（1500mg/l）、硫氰酸盐（SCN(-)逐渐填充时为 800mg/l，瞬时填充时为 100mg/l）和氨（NH4(+)-N 500mg/l）。B1 中苯酚和化学需氧量（COD）的去除率随周期时间的增加而增加，逐渐缩短的填充时间显示出比逐渐长的填充时间和瞬时填充时间更高的性能。在 B2 中，同时实现了苯酚、SCN、COD 和 NO3(-)-N 的去除，周期时间和填充时间的影响并不显著。在 B3 中，NH4(+)-N 的去除效率随周期时间和逐渐填充时间的增加而增加。建议采用最小周期时间 30 小时、总水力停留时间 7.5 天和总填充时间 12.5 小时。改进的 Stover-Kincannon 模型对 B1、B2 和 B3 中基质去除的相关性最高。
