| 基于呼吸计量法的异养菌动力学参数优化估计 |
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| 引用本文： | 周振,吴志超,王志伟,唐书娟,顾国维. 基于呼吸计量法的异养菌动力学参数优化估计[J]. 中国环境科学, 2010, 30(3): 322-327 |
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| 作者姓名： | 周振 吴志超 王志伟 唐书娟 顾国维 |
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| 作者单位： | 1. 上海电力学院能源与环境工程学院,上海,200090
2. 同济大学环境科学与工程学院,污染控制与资源化研究国家重点实验室,上海,200092 |
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| 基金项目： | 上海市科委能力建设项目，上海城投"十一五"项目，上海电力学院科研基金 |
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| 摘 要： | 利用双水解模型对活性污泥数学模型(ASM)进行改进,并通过呼吸计量试验和非线性最优化算法建立了异养菌动力学参数的优化估计方案.该方案在上海2个污水处理厂的测定结果表明,经优化求解后,ASM改进模型能够准确模拟批式试验的耗氧速率曲线.26℃下,曲阳厂和白龙港厂活性污泥的异养菌衰减系数分别为0.58,0.55d-1,异养菌最大比增长速率常数(均约为4d-1)和半饱和常数(2.00,2.36mg/L)较为接近.白龙港厂进水中慢速可生物降解有机物的水解速率明显高于曲阳厂,这是由于长距离管道输送显著降低水解组分的粒径所致.
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| 关 键 词： | 活性污泥 异养菌 数学模型 参数 优化估计 |
| 收稿时间： | 2009-08-10; |
Optimization estimation of kinetic parameters for heterotrophic biomass based on batch respirometric method |
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| ZHOU Zhen,WU Zhi-chao,WANG Zhi-wei,TANG Shu-juan,GU Guo-wei. Optimization estimation of kinetic parameters for heterotrophic biomass based on batch respirometric method[J]. China Environmental Science, 2010, 30(3): 322-327 |
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| Authors: | ZHOU Zhen WU Zhi-chao WANG Zhi-wei TANG Shu-juan GU Guo-wei |
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| Affiliation: | ZHOU Zhen1,WU Zhi-chao2,WANG Zhi-wei2,TANG Shu-juan2,GU Guo-wei2(1.School of Energy , Environmental Engineering,Shanghai University of Electric Power,Shanghai 200090,China,2.State Key Laboratory of Pollution Control , Resource Reuse,College of Environmental Science , Engineering,Tongji University,Shanghai 200092,China) |
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| Abstract: | Based on activated sludge models (ASM) modified by dual hydrolysis mechanism,kinetic parameters for heterotrophic biomass were estimated by nonlinear optimization algorithm in combination with batch respirometric tests.Parameter estimation results of two wastewater treatment plants (WWTP) in Shanghai showed that,the modified model after optimization provided the best model fit with the experimentally determined oxygen uptake rate profiles.At 26℃,the heterotrophic decay rates for activated sludge from Quyang WWTP and Bailonggang WWTP were respectively 0.58,0.55 d~(-1),and similar maximum specific growth rate (both about 4 d~(-1)) and half-saturation constant (2.00,2.36 mg/L) were obtained.The hydrolysis rate of slowly biodegradable organics in wastewater from the Bailonggang WWTP was significantly higher than that of the Quyang WWTP,which was mainly attributed to its smaller particles after longpipeline transportation. |
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| Keywords: | activated sludge heterotrophic biomass mathematical model parameter optimal estimation |
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