【摘要】 膜的反冲洗是膜生物反应器中常用的一种防止膜污染、提高透水率及透水率稳定性的技术．本文通过数学推导与实验得到一个最佳反冲洗周期测定公式：ｆ（ｔ）＝（Ｑｆ－Ｑｂ）／（ｔｆ＋ｔｂ）．应用该式可得到一种较为方便的最佳反冲洗周期的测定方法．此最佳反冲洗周期测定公式和最佳反冲洗周期测定方法可以应用于膜生物反应器系统最佳反冲洗周期的确定、自动化控制和半自动化控制．更多还原

【Abstract】 Backflushing is a useful technique to remove deposits and internal clogging of the membrane in membrane bioreactors and to increase the rate of permeate flux.An experiment was carried out to use filtered water for backflushing.An equation was derived for optimum backflush interval determination and it was tested in a crossflow ultrafiltration membrane bioreactor.This bioreactor was a laboratory scale system composed of activated sludge bioreactor with a hollow fiber membrane module.The equation is expressed as f(t)=(Q f- Q b)/( t f- t b).Based on this,an automatic control of optimum backflush interval can be accomplished with a computer control system.更多还原