基于数学模拟的污水处理厂设计:方法与案例

随着我国城镇污水处理厂出水水质标准的逐步提高,基于经验的传统(定性或半定量)设计方法已经难以满足稳定达标和高标准水质排放的要求。提出了基于数学模拟的污水处理工艺设计中的工艺评估和优化方法,并列举了两个应用案例(一个为新建污水处理厂,另一个为污水处理厂提标改造),包括工艺方案的比较选择、工艺方案评估优化等内容。案例模拟结果表明,数学模拟技术的应用有助于污水处理厂的设计或提标改造的定量化分析,可使污水处理工艺的优化更加合理、全面。

Model-based Design of Sewage Treatment Plants: Methodology and Case Studies

With a large number of municipal sewage treatment plants put into operation and more stringent effluent standards applied in China, the traditional (qualitative or semi-quantitative) design methods based on experience are difficult to meet the requirement of stable operation and high standard effluent quality. The model-based design procedure was presented, and two practical cases (one for new sewage treatment plant and the other for upgrading sewage treatment plant) were introduced to demonstrate the application of the model-based design method, including process comparison/selection, and process evaluation/optimization. The simulation results showed that the application of mathematical simulation technology was helpful to the quantitative analysis of the design and renovation for sewage treatment plants, and could make the optimization of sewage treatment process more reasonable and comprehensive.