Nopens I, Sin G, Jiang T, d'Antonio L, Stama S, Zhao J, Vanrolleghem P A
BIOMATH, Department of Applied Mathematics, Biometrics and Process Control, Ghent University, Coupure Links 653, 9000 Gent, Belgium. ingmar.nopens@.ugent.be
Water Sci Technol. 2007;56(6):135-43. doi: 10.2166/wst.2007.640.
A model-based optimisation of the operation in view of the biological performance in terms of nitrogen (N) and phosphorus (P) removal of a pilot-scale side-stream MBR has been performed by means of a two-tier scenario analysis. The methodology uses two different scenario analyses to simulate the effect of three degrees of freedom in the MBR system: (1) DO set-point in the aerobic reactor, (2) sludge residence time and (3) internal recirculation rate. The scenarios are simulated using a calibrated ASM2d MBR model. Effluent quality, in terms of nitrate, ammonia and phosphate, is used to select the best scenario. It proved to be a compromise between nitrogen and phosphorus removal as these are linked. A 42% reduction in ammonium and a 32% reduction in nitrate concentration were achieved. Phosphate removal is partly sacrificed (39% increase) compared to the standard operation.
通过两层情景分析，针对中试规模侧流膜生物反应器在氮（N）和磷（P）去除方面的生物学性能，进行了基于模型的运行优化。该方法使用两种不同的情景分析来模拟膜生物反应器系统中三个自由度的影响：（1）好氧反应器中的溶解氧设定点，（2）污泥停留时间，以及（3）内部循环速率。使用校准后的活性污泥2d膜生物反应器模型对情景进行模拟。根据硝酸盐、氨和磷酸盐的排放质量来选择最佳情景。由于氮和磷的去除相互关联，结果证明这是氮和磷去除之间的一种折衷。铵含量降低了42%，硝酸盐浓度降低了32%。与标准运行相比，磷酸盐去除率有所牺牲（增加了39%）。
