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.

尽管在全球范围内，对实际上可行的磷酸盐去除过程的需求尚未在全球范围内提高，但在实际情况下，尚未将生物学磷酸盐去除过程（EBPR）应用于实际情况下，从其自身的出色潜力所期望的。本研究的目的是开发基本模型，该模型可以通过结合可用的微生物学知识和数学建模技术来成为对EBPR设计和控制的工具。还讨论了开发模型的应用。进行了经验研究以识别模型参数，其中有氧，缺氧和厌氧条件对缓慢生物降解有机物的水解速率的影响进行了研究。在缺氧或厌氧条件下，参与水解的酶速率降低，因此水解速率降低了。为开发活化的Sludege模型的开发，引入糖原储存和磷酸盐积累有机体的硝化作用，并介绍了现有模型（IAWQ激活的污泥模型）。根据日本两个污水处理厂的实际操作数据对改良模型进行了校准。通过此校准过程对校准程序进行标准化。对模型参数进行表征进行了敏感分析。将开发模型的行为与实际植物的行为进行了比较。从本质上讲，它试图总结一本针对EBPR的设计和控制的手册，但是时间不允许我们完成它。