Monitoring and control using on-line ORP on the continuous-flow activated sludge batch reactor system

NCUIR > Engineering College > Graduate Institute of Environmental Engineering > journal & Dissertation > Item 987654321/27278

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Title:	Monitoring and control using on-line ORP on the continuous-flow activated sludge batch reactor system
Authors:	Yu,RF;Liaw,SL;Chang,CN;Lu,HJ;Cheng,WY
Contributors:	環境工程研究所
Keywords:	NUTRIENT REMOVAL;DIGESTION;AERATION
Date:	1997
Issue Date:	2010-06-29 18:21:51 (UTC+8)
Publisher:	中央大學
Abstract:	On-line monitoring of ORP has been proved to be a practical and useful technique for process control of wastewater treatment systems. This paper presents the feasibility of using on-line ORP monitoring system on a laboratory scale single tank continuous-now activated sludge batch reactor, which is capable of removing carbon, nitrogen and phosphorus pollutants. Two control strategies, fixed-time and real-time, are applied for process control. Results obtained from fixed-time control study indicate that the variations and the ORP profile can accurately represent dynamic characteristics of system; the pH profile can also indicate some of those characteristics. Also, the breakpoints, setpoints and settime on the ORP and pH profiles are used to establish the real-time control strategy to determine the transfer of operation stages. The real-time experiments show a better performance than fixed-time, thus, on-line ORP and pH monitoring and control is practical for continuous-now batch activated sludge process control. Copyright (C) 1996 IAWQ.
Relation:	WATER SCIENCE AND TECHNOLOGY
Appears in Collections:	[Graduate Institute of Environmental Engineering ] journal & Dissertation

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