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Fuzzy Inference System for Modeling of Short-Term Effects of Operative Parameters and Memory of Reactor on SBR Performance

机译:运行参数和反应堆记忆对SBR性能短期影响建模的模糊推理系统

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摘要

Sequencing batch reactor (SBR) is a type of activated sludge treatment, in which the aeration and clarifying step take place in a single reactor. There are several literatures and patents that have investigated the ability of SBR in wastewater treatment. In this study, the short-time effects of operative parameters, including influent COD, COD/N ratio, COD/P ratio, aeration time, settling time, temperature, and the memory of reactor on performance of a SBR in treating starchy wastewater were investigated. Fractional factorial design (FFD) approach was applied for the design of experiment. Fuzzy inference systems (FIS) with Mamdani's and Sugino's method were developed to simulate the effects of operative parameters. Accordingly, the ability of several structures of FIS was investigated. There was a significant difference between Mamdani's and Sugino's model with wtaver defuzzification. But the model accuracy of Sugino's with wtsum is very poor. Generally, the ability of Mamdani' model in response prediction is higher than Sugino's. The correlation coefficient index (R2) of the best FIS structure was 0.9774.
机译:顺序间歇式反应器(SBR)是一种活性污泥处理,其中曝气和澄清步骤在单个反应器中进行。有几篇文献和专利研究了SBR在废水处理中的能力。在这项研究中,操作参数(包括进水COD,COD / N比,COD / P比,曝气时间,沉降时间,温度和反应器的记忆)对SBR处理淀粉废水的性能的短期影响是:调查。分数阶乘设计(FFD)方法被应用于实验设计。开发了采用Mamdani和Sugino方法的模糊推理系统(FIS),以模拟操作参数的影响。因此,研究了FIS的几种结构的能力。 Mamdani模型和Sugino模型具有wtaver去模糊功能之间存在显着差异。但是Sugino的wtsum的模型精度非常差。通常,Mamdani模型在响应预测中的能力高于Sugino模型。最佳FIS结构的相关系数指数(R2)为0.9774。

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