Pollution Research Paper

Vol 33, Issue 04, 2014 ; Page No.(829-834 )

REACTION KINETIC STUDIES AND ANALYSIS ON DAIRY WASTEWATER USING UASB REACTOR

LAXMI KANT PANDEY, ASHOK K. SHARMA, SARITA SHARMA AND MANOJ HINGE

Abstract

This work assesses the possibility of using cow dung slurry sludge in UASB reactors applied to the treatment of dairy wastewater and studies the effect of time on the performance of the reactors. This has effectively removed BOD, COD and other parameters because of the combined suspended and attached growth processes. The reactors must be operated at loads under 2400 mg COD/L in order to attain a conversion to methane of the removed COD above 78.33%. The mass fraction of methane increased with increasing operational temperature in the UASB reactors. The first-order kinetics was found to be suitable for representation of the substrate removal. The kinetic constant decreased respectively. Prediction of effluent COD and methane production rate during continuous reactor operation was possible using the first-order kinetic model. An influent COD concentration of 2400 mg/L was utilized at steady state condition. Monod kinetic models were employed to describe microbial activities of dairy wastewater in an anaerobic digester.

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