Department of Electrical & Electronic Engineering, AUT University, 21 St Pauls St, Auckland, New Zealand.
Department of Electrical & Electronic Engineering, AUT University, 21 St Pauls St, Auckland, New Zealand.
Water Res. 2015 Dec 15;87:225-36. doi: 10.1016/j.watres.2015.09.009. Epub 2015 Sep 25.
Wet oxidation is a successful process for the treatment of municipal sludge. In addition, the resulting effluent from wet oxidation is a useful carbon source for subsequent biological nutrient removal processes in wastewater treatment. Owing to limitations with current kinetic models, this study produced a kinetic model which predicts the concentrations of key intermediate components during wet oxidation. The model was regressed from lab-scale experiments and then subsequently validated using data from a wet oxidation pilot plant. The model was shown to be accurate in predicting the concentrations of each component, and produced good results when applied to a plant 500 times larger in size. A statistical study was undertaken to investigate the validity of the regressed model parameters. Finally the usefulness of the model was demonstrated by suggesting optimum operating conditions such that volatile fatty acids were maximised.
湿式氧化是一种成功的城市污泥处理方法。此外，湿式氧化产生的废水是后续废水生物脱氮处理中有用的碳源。由于当前动力学模型的局限性，本研究提出了一种预测湿式氧化过程中关键中间组分浓度的动力学模型。该模型是通过实验室规模的实验回归得到的，然后使用湿式氧化中试工厂的数据进行了验证。结果表明，该模型能够准确预测各组分的浓度，并且在应用于规模大 500 倍的工厂时效果良好。进行了一项统计研究，以调查回归模型参数的有效性。最后，通过提出最佳操作条件（使挥发性脂肪酸最大化），证明了该模型的有用性。
