大型污水处理厂工艺模拟应用实例

A Case Study of Process Modelling of a Large-scale Wastewater Treatment Plant

污水厂工艺模拟(数学模型)已被广泛接受,并应用于城市污水厂的设计、升级改造和优化运行。但是,模拟中的困难和挑战是缺少可靠、高质量的数据进行污水厂模型的校准和验证,通常需要投入大量的人力和资金收集数据。另一方面,在污水厂运行管理中,为满足监管而投入大量人力和资金所获得的数据(历史监测数据)没有得到很好的利用,价值没有得到很好的挖掘。利用北京某大型污水厂两年的历史监测数据对工艺模型进行校准和验证,并应用校正后的模型为该污水厂的运行管理提供优化方案。这个实例充分发掘了历史监测数据的价值,示范性地探索了如何利用污水处理的历史监测数据进行污水处理模型校准和验证,并为污水处理厂的优化运行、升级改造提供了可靠方案。

The process modelling （ mathematical model） of wastewater treatment plant （WWTP） has been widely accepted and applied for design, retrofit, and optimization of municipal WWTP. One of the challenges in the process modelling is the lack of reliable and high-quality data for the calibration and validation of the model. Collection of the data costs considerable budget. However, the monitoring data from the operation and management of WWTP could be better utilized and the value of the dala could be further explored. This study calibrated and validated a process model using two years＇ monitoring data from a large wastewater treatment plant in Beijing, and provided a calibrated and optimized model for the operation and management of the wastewater treatment plant. This example fully explored the value of the historical monitoring data, demonstrated the calibration and verification of sewage treatment models using historical monitoring data, and provided a reliable plan for the optimization of the operations and the rel- rofit of wastewater treatment plants.