Vanhooren H, Yuan Z, Vanrolleghem P A
BIOMATH, Ghent University, Gent, Belgium.
Water Sci Technol. 2002;46(1-2):327-32.
We are witnessing an enormous growth in biological nitrogen removal from wastewater. It presents specific challenges beyond traditional COD (carbon) removal. A possibility for optimised process design is the use of biomass-supporting media. In this paper, attached growth processes (AGP) are evaluated using dynamic simulations. The advantages of these systems that were qualitatively described elsewhere, are validated quantitatively based on a simulation benchmark for activated sludge treatment systems. This simulation benchmark is extended with a biofilm model that allows for fast and accurate simulation of the conversion of different substrates in a biofilm. The economic feasibility of this system is evaluated using the data generated with the benchmark simulations. Capital savings due to volume reduction and reduced sludge production are weighed out against increased aeration costs. In this evaluation, effluent quality is integrated as well.
我们正在见证废水生物脱氮领域的巨大发展。这带来了超越传统化学需氧量（COD，即碳）去除的特殊挑战。优化工艺设计的一种可能性是使用生物质支撑介质。本文通过动态模拟对附着生长工艺（AGP）进行了评估。这些系统在其他地方已有定性描述的优势，基于活性污泥处理系统的模拟基准进行了定量验证。该模拟基准通过一个生物膜模型得到扩展，该模型能够快速、准确地模拟生物膜中不同底物的转化。利用基准模拟生成的数据评估了该系统的经济可行性。将因体积减小和污泥产量降低而节省的资金与增加的曝气成本进行权衡。在该评估中，还综合考虑了出水水质。
