| 乙酸/丙酸作为EBPR碳源的动力学模型研究(Ⅰ) ——模型的建立 |
| 摘要点击 2251 全文点击 1725 投稿时间：2012-06-01 修订日期：2012-08-16 |
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| 中文关键词 增强生物除磷 聚磷菌 聚糖菌 短链脂肪酸 动力学模型 |
| 英文关键词 enhanced biological phosphorus removal (EBPR) phosphorus-accumulating organisms (PAO) glycogen-accumulating organisms (GAO) short-chain fatty acids (SCFAs) kinetic model |
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| 中文摘要 |
| 以活性污泥ASM2模型为基础,采用混合短链脂肪酸(SCFAs)作为基准物质,建立了增强生物除磷系统中聚磷菌和(PAO)的厌氧/好氧动力学模型. 模型的显著特点是厌氧代谢过程中的糖原水解、聚羟基烷酸合成、以及聚磷水解速率由SCFAs的速率方程表示,并考虑了厌氧维持对动力学和计量学的影响. 模型建立了过程计量学系数矩阵,包括3个溶解性组分、4个颗粒性组分,同时考虑了pH对代谢动力学的影响. 最后,在PAO模型的基础上,建立了GAO的动力学模型,该模型包含7个过程,磷的浓度仅对其好氧生长有影响. |
| 英文摘要 |
| Based on activated sludge model No. 2 (ASM2), the anaerobic/aerobic kinetic model of phosphorus-accumulating organisms (PAO) was established with mixed short-chain fatty acids (SCFAs) as the base substance in enhanced biological phosphorus removal process. The characteristic of the PAO model was that the anaerobic metabolism rates of glycogen degradation, poly-β-hydroxyalkanoates synthesis and polyphosphate hydrolysis were expressed by SCFAs uptake equation, and the effects of anaerobic maintenance on kinetics and stoichiometry were considered. The PAO kinetic model was composed of 3 soluble components, 4 particulate components and a pH parameter, which constituted the matrix of stoichiometric coefficients. On the basis of PAO model, the GAO kinetic model was established, which included 7 processes, and phosphorus content influenced the aerobic metabolism only. |
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