Batch and semi-continuous flow aerobic digesters were used to stabilize thickened waste-activated sludge at different initial conditions and mean solids retention times. Under dynamic conditions, total suspended solids, volatile suspended solids (VSS) and total and particulate chemical oxygen demand (COD and PCOD) were monitored in the batch reactors and effluent from the semi-continuous flow reactors. Activated Sludge Model (ASM) no. 1 and ASM no. 3 were applied to measured data (calibration data set) to evaluate the consistency and performances of models at different flow regimes for digester COD and VSS modelling. The results indicated that both ASM1 and ASM3 predicted digester COD, VSS and PCOD concentrations well (R 2, ). Parameter estimation concluded that compared to ASM1, ASM3 parameters were more consistent across different batch and semi-continuous flow runs with different operating conditions. Model validation on a data set independent from the calibration data successfully predicted digester COD (R 2=0.88) and VSS (R 2=0.94) concentrations by ASM3, while ASM1 overestimated both reactor COD (R 2=0.74) and VSS concentrations (R 2=0.79) after 15 days of aerobic batch digestion.

中文翻译：

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应用国际水协会活性污泥模型来描述好氧污泥消化

间歇式和半连续流式好氧消化器用于在不同的初始条件和平均固体保留时间下稳定浓缩的废物活性污泥。在动态条件下，在间歇式反应器和半连续流动反应器的流出物中监测总悬浮固体、挥发性悬浮固体 (VSS) 以及总和颗粒化学需氧量（COD 和 PCOD）。活性污泥模型 (ASM) 编号。1 和 ASM 编号。3 应用于测量数据（校准数据集），以评估不同流态下消化器 COD 和 VSS 建模模型的一致性和性能。结果表明，ASM1 和 ASM3 都能很好地预测消化池 COD、VSS 和 PCOD 浓度（R 2，...）。参数估计得出的结论是，与 ASM1 相比，ASM3 参数在不同操作条件下的不同批次和半连续流动运行中更加一致。独立于校准数据的数据集模型验证成功预测了 ASM3 的消化池 COD (R 2=0.88) 和 VSS (R 2=0.94) 浓度，而 ASM1 高估了反应器 COD (R 2=0.74) 和 VSS 浓度 (R 2=0.79) 需氧分批消化 15 天后。