Description: Das Projekt "Ueberwachungsstrategien fuer Ein- und Zweiphasige anaerobe Fluessig-Bett-Reaktoren. Abbau von Molke als Modellsubstrat" wird vom Umweltbundesamt gefördert und von Eidgenössische Technische Hochschule Zürich, Laboratorium für Technische Chemie durchgeführt. The degradation of an easily degradable substrate (whey) was studied in one- and two-stage anaerobic fluidized sand bed reactors. The control of the reactors was based on the measured variables of methane reactor and organic acids. The feed flow rate was taken as the manipulated variable for both systems. Experimental work confirmed the results of simulations for the relevant control variables. The two-step system was more stable than the one stage system. Conventional PI/PID control was found to be unsatisfactory. Successful control was possible by optimal adaptive control, based on a single input - double output linear model, using as index of performance (PI): PI = (flow of methane) -(Constant)(Total organic acids concentration). A PC was used for the online data acquisition, parameter estimation and optimization.
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Tierhaltungsanlage ? Biologische Abwasserreinigung ? Zürich ? Anaerobe Bedingungen ? Mikrobiologie ? Bioreaktor ? Futtermittel ? Industrieabwasser ? Methan ? Molke ? Organische Säure ? Wirbelschicht ? Sand ? Biologischer Abbau ? Anlagenüberwachung ? Fließgeschwindigkeit ? Reaktor ? Simulation ? Verfahrenstechnik ? Wirkungsgrad ? Datenerhebung ? Versuchsanlage ? Degradation biologique ? Eaux usees ? Fliessbettreaktor ? Mehrstufenverfahren ? Naturklaeranlage ? Station d'epuration naturelle ? epuration des ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1986-12-01 - 1990-09-01
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