Developmeny of Optimization Tool for Design and Maintenance of Biological Phosphate Removal Processes

生物除磷工艺设计和维护优化工具的开发

基本信息

批准号：
06680530
负责人：
MINO Takashi
金额：
$ 1.41万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

Although the demands for practically feasible phosphate removal processe are worldwide, the enhanced biological phosphate removal processes (EBPR) have not been applied to actual situations to such an extent as is expected from their own excelloent potential. The present research aims at development of a basic model which can be a toolfor design and control of EBPR by combining available microbiological knowledge and mathematical modelling techniques. The application of the developed model are also discussed.Experimental studies were conducted to identify model parameters, in which effect of aerobic, anoxic and anaerobic conditions on the rate of hydrolysis of slowly biodegradable organic matters were investigated. Under anoxic or anaerobic conditions, the rate of enzymes involved in the hydrolysis decreased and, consequently the hydrolysis rate decreased.As for the development of activated sludege model, introduction of glycogen storage and denitrification by phosphate accumulating organismsinto the existing model (IAWQ activated sludge model) were tested, and finally the latter was introduced. The modified model were calibrated against actual operation data from two sewarage treatment plants in Japan. Calibration procedures were standardized through this calibration process. Asensitivity analysis was carried out to characterize model parameters. The behaviors of the developed model were compared with those of actual plants.Initially it was attempted to summarize a manual for design and control of EBPR,but time did not allow us to complete it.

尽管世界范围内都对切实可行的除磷工艺有需求，但强化生物除磷工艺（EBPR）尚未达到其自身卓越潜力所预期的程度。本研究旨在通过结合现有的微生物知识和数学建模技术，开发一个基本模型，该模型可以作为 EBPR 设计和控制的工具。还讨论了该模型的应用。通过实验研究确定了模型参数，研究了好氧、缺氧和厌氧条件对缓慢生物降解有机物水解速率的影响。在缺氧或厌氧条件下，参与水解的酶的速率降低，从而导致水解率降低。在活性污泥模型的开发方面，在现有模型（IAWQ活性污泥模型）中引入了糖原储存和蓄磷生物的反硝化作用）进行了测试，最后引入了后者。修改后的模型根据日本两个污水处理厂的实际运行数据进行了校准。通过该校准过程标准化了校准程序。进行敏感性分析来表征模型参数。将开发的模型的行为与实际工厂的行为进行了比较。最初试图总结出 EBPR 设计和控制的手册，但时间不允许我们完成。