A kinetic model of municipal sludge degradation during non-catalytic wet oxidation

WATER RESEARCH

卷:87

Article

Prince-Pike, Arrian¹  Wilson, David I.¹  Baroutian, Saeid²  Andrews, John³  Gapes, Daniel J.³ 

[1] AUT Univ, Dept Elect & Elect Engn, Auckland, New Zealand

[2] Univ Auckland, Dept Chem & Mat Engn, Fac Engn, Auckland, New Zealand

[3] Scion, Rotorua, New Zealand

关键词: Wet oxidation;    Municipal sludge;    Kinetic modelling;    Wastewater;   

DOI  :  10.1016/j.watres.2015.09.009

来源: Elsevier

【 摘 要 】

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. (C) 2015 Elsevier Ltd. All rights reserved.

【 授权许可】

Free