Australian Centre for Sustainable Catchments, University of Southern Queensland (USQ), Qld-4350, Australia.
Bioresour Technol. 2010 Mar;101(5):1426-34. doi: 10.1016/j.biortech.2009.07.012. Epub 2009 Aug 4.
Simultaneous storage and growth model has recently gained increased acceptance among researchers that can better interpret the processes occurring in activated sludge processes during aerobic biodegradation of organic carbon. The model underwent further improvement and was successfully calibrated using respirometric measurements, acetate being a test substrate. However, model based interpretation of titrimetry needs to be verified for proper validation of this model since pH and dissolved oxygen dynamics occur simultaneously in a batch reactor. Hence, in this paper, it is aimed to modify the existing model by introducing stoichiometric parameters involved in titrimetry in each step of the growth and storage phases along with the consideration of non-linear carbon dioxide transfer rate in liquid phase. The model calibration was done for three different acetate concentrations using titrimetric, respirometric and combined respirometric-titrimetric measurements. The parameter estimation results from all three combinations were found to be very close that supports the validity of the model.
同步存储与增长模型最近在研究人员中得到了更多的认可，因为它可以更好地解释好氧生物降解有机碳过程中在活性污泥中的发生的过程。该模型经过进一步改进，并使用呼吸测量法成功地进行了校准，其中乙酸盐是一种测试底物。然而，由于在批量反应器中 pH 和溶解氧动态同时发生，因此需要对基于模型的滴定法解释进行验证，以正确验证该模型。因此，本文旨在通过在生长和存储阶段的每个步骤中引入涉及滴定法的化学计量参数，以及考虑液相中非线性二氧化碳传递速率，来对现有的模型进行修改。使用滴定法、呼吸测量法和组合的呼吸测量法-滴定法对三种不同的乙酸盐浓度进行了模型校准。发现所有三种组合的参数估计结果都非常接近，这支持了模型的有效性。
