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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/27252

    Title: Applying real-time control to enhance the performance of nitrogen removal in the continuous-flow SBR system
    Authors: Yu,RF;Liaw,SL;Chang,CN;Cheng,WY
    Contributors: 環境工程研究所
    Date: 1998
    Issue Date: 2010-06-29 18:21:16 (UTC+8)
    Publisher: 中央大學
    Abstract: Conventional operations of wastewater treatment systems use the concepts of steady-state control, and often lead to unnecessary resource consumption for maintaining system functions. Real-time control was examined as a useful approach for improving the operation of wastewater treatment systems. This paper presents the application of real-time control to enhance the performance of nitrogen removal in a continuous-flow SBR system. A real-time control system combining on-line measurement of ORP and pH with Artificial Neural Network (ANN) model was proposed to carry out unsteady-state regulation of the hydraulic retention time of different operation phases. The result of this study shows that the performance of nitrogen removal was enhanced under real-time operation. Compared with fixed-time operation, the retention time of aerobic and anoxic phases can be reduced by approximately 45% and 15.5% in real-time operation respectively, also meaning that 45% aeration energy can be saved. The real-time operation also reveals a higher total nitrogen removal in a relative short retention time. Moreover, some dynamics and kinetics of nitrogen were investigated. These indicate the occurrence of nitrite-type nitrification under real-time operation. This nitrite-type nitrification results in the enhancement of denitrification performance with less carbon resource requirement and higher denitrification efficiency. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.
    Appears in Collections:[環境工程研究所 ] 期刊論文

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