<b>Obtaining the kinetic parameters from an Upflow Anaerobic Sludge Blanket - UASB in removing the organic loading form a dairy activity</b> - DOI: 10.4025/actascitechnol.v31i1.823

Abstract

The goal of this research was to obtain and withdraw the kinetic parameters from an Upflow Anaerobic Sludge Blanket - UASB in removing the organic loading form a dairy activity. The treatment system was composed of Sand Interceptor (Grit Chamber), Grease Intercept Chambers, Stirred Contact Tank (CT), an UASB reactor, Anaerobic Filter (AF), and Batch Activated Sludge System(BASS). The HRT (Hydraulic Retention Time) and temperature were: 44, 35, 30, 26 e 20 hours, after system stabilization phase, with a range of temperature varying from 24,8 ± 1,8 ºC. The reactor volume was 394 L. From the COD (mg L-1) data, COD t (mg L-1), Total Fixed and Volatile Solids (mg L-1), Temperature (oC), Flow rate (L d-1), and Sludge Profile (Total Volatile Solids, mg L-1), monitored along all the research period in a pilot scale in each. The kinetic parameters of yield “Y†â€(mgDQO mgSVT-1 d-1), the decay coefficient “Kdâ€(d-1), and maximum growth rate “μmáxâ€(d-1) and the limited growth rate “Ksâ€(mgDQO L-1), determined, were based on a linear regression studies, giving in this way techno support to the physical-chemical data collected during the system operation.