Mannina G, Di Trapani D, Torregrossa M, Viviani G
Dipartimento di Ingegneria Idraulica ed Applicazioni Ambientali, Università di Palermo, Viale delle Scienze, 90128 Palermo, Italy.
Water Sci Technol. 2007;55(8-9):237-46. doi: 10.2166/wst.2007.264.
In recent years there has been an increasing interest in the development of hybrid biofilm reactors, especially in the upgrading of existing WWTP that are no longer able to respect concentration limits. In fact, today's challenge is the achievement of a good aquatic state for the receiving water bodies according to the Water Framework Directive requirements, which indeed limit even more the continuous emissions, i.e. coming from WWTP. This paper presents the setting up of a mathematical model for the simulation of a hybrid MBBR system; the model calibration/validation has been carried out considering a field gathering campaign on an experimental pilot plant. The main goal is to gain insight about MBBR processes attempting to overcome main shortcomings in particular referring to the modelling aspects. The model is made up of two connected sub-models for the simulation of the suspended and attached biomass. The model is mainly based on the concepts of the activated sludge model No. 1 (ASM1) for the description of the biokinetic process both for the suspended and for the attached biomass. The results show a good agreement between predicted and observed values both for the attached and for the suspended biomass moreover they are encouraging for further researches.
近年来，人们对混合生物膜反应器的开发越来越感兴趣，尤其是在升级那些不再能够符合浓度限制的现有污水处理厂方面。事实上，当今的挑战是根据《水框架指令》的要求，使受纳水体达到良好的水生状态，这确实进一步限制了持续排放，即来自污水处理厂的排放。本文介绍了一个用于模拟混合移动床生物膜反应器（MBBR）系统的数学模型的建立；模型校准/验证是在一个实验中试装置上进行实地数据收集活动的基础上完成的。主要目标是深入了解MBBR工艺，试图克服主要缺点，特别是在建模方面。该模型由两个相连的子模型组成，用于模拟悬浮生物量和附着生物量。该模型主要基于1号活性污泥模型（ASM1）的概念，用于描述悬浮生物量和附着生物量的生物动力学过程。结果表明，对于附着生物量和悬浮生物量，预测值与观测值之间都有很好的一致性，而且这些结果对进一步的研究很有鼓舞作用。
