Tykesson E, Aspegren H, Henze M, Nielsen P H, Jansen J la C
Malmö Water, Sweden.
Water Sci Technol. 2002;45(6):99-106.
The aim of this study was to evaluate how routinely performed phosphorus release tests could be used when modelling enhanced biological phosphorus removal (EBPR) using activated sludge models such as ASM2d. A pilot plant with an extensive analysis programme was used as basis for the simulations. Without any calibration the prediction of phosphorus removal was poor and the initial release rates from the simulations were not similar to those found from the laboratory tests. A period with low organic loading was chosen as a calibration period. In this period averages of daily influent measurements were used as influent parameters. First, calibration was performed in order to fit effluent COD and MLVSS in the sludge. Next, the phosphorus content in the sludge was decreased to the measured level by decreasing the fermentation rate. Finally, the initial phosphorus release rate was calculated from a simulated batch test and the PHA uptake rate was increased to fit this release rate with the average initial rates from laboratory batch tests performed during the period. The calibrated model was verified with data from the subsequent period where acetate was dosed.
本研究的目的是评估在使用诸如ASM2d等活性污泥模型对强化生物除磷（EBPR）进行建模时，常规进行的磷释放测试如何能够得到应用。一个配备了广泛分析程序的中试装置被用作模拟的基础。在没有任何校准的情况下，磷去除的预测效果很差，模拟得到的初始释放速率与实验室测试结果不相似。选择一个低有机负荷期作为校准期。在此期间，将每日进水测量的平均值用作进水参数。首先，进行校准以拟合污泥中的出水COD和MLVSS。接下来，通过降低发酵速率将污泥中的磷含量降至测量水平。最后，从模拟的批次试验中计算初始磷释放速率，并提高PHA摄取速率，以使该释放速率与该期间进行的实验室批次试验的平均初始速率相匹配。使用后续投加乙酸盐时期的数据对校准后的模型进行验证。
