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Information Seminar Paper

Title

EFFECT OF SUBSTRATE ON VIABILITY AND RESPIROMETRIC ACTIVITY OF ACTIVATED SLUDGE IN A SHORT TIME OF EXPERIMENT

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Abstract

 THE MAJOR OBJECTIVE OF THIS INVESTIGATION WAS TO EVALUATE THE DIFFERENCE EFFECTS OF SUBSTRATE ON PERMITTIVITY AND OXYGEN UPTAKE RATE AS BIOLOGICAL PROCESS CONTROL PARAMETERS IN A WASTEWATER TREATMENT SYSTEM. THE INVESTIGATION WAS CARRIED OUT IN AN AIRLIFT BIOREACTOR. PERMITTIVITY AS REPRESENTATIVE OF ACTIVATED SLUDGE VIABILITY WAS MEASURED BY A CAPACITIVE ON-LINE SENSOR. OXYGEN UPTAKE RATE (OUR) WAS ALSO MEASURED AS A REPRESENTATIVE FOR RESPIROMETRIC ACTIVITY. RESULTS SHOWED THAT RESPIROMETRIC ACTIVITY OF ACTIVATED SLUDGE WAS INCREASED WITH ADDING OF SUBSTRATE. ON THE OTHER HAND, THE VIABILITY OF ACTIVATED SLUDGE NOT CHANGES IN SHORT TIME OF EXPERIMENT. THEIR VARIATION WERE IN ACCORDANCE WITH INCREASING OF BIOMASS CONCENTRATION MEASURED AS MLSS, MLVSS, PERMITTIVITY AND OUR. ALSO, THE VIABILITY OF ACTIVATED SLUDGE WERE INVESTIGATED IN A SHORT TIME OF EXPERIMENT. AN ON-LINE MONITORING OF ACTIVATED SLUDGE CAN BE USED FOR BETTER AND MORE EFFICIENT CONTROL OF BIOLOGICAL WASTEWATER TREATMENT PROCESS.

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