Kinetic Evaluation of Two-Phase Anaerobic Treatment of Slaughterhouse Wastewater

• Main Authors: S. Tanarat, P. Hanjai
• Format: Conference Proceeding
• Published: 2020
• Subjects: Physics and Astronomy
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85091588880&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/71033
• Institution: Chiang Mai University

© Published under licence by IOP Publishing Ltd. Two-phase anaerobic treatment by a continuously stirred tank reactor (CSTR) and an upflow anaerobic sludge blanket (UASB) system was applied to treat slaughterhouse wastewater at ambient temperature, non-pH adjustment, at five different organic loading rates (OLR) of 1.39-2.60 kg COD/m3.d with the hydraulic retention time (HRT) in the range of 14.1-26.4 hr. The kinetic evaluation of the experimental data was carried out using a kinetic model derived from Michaelis-Menten and Monod equation. The maximum substrate utilization rate (kmax) and the half velocity constant (Ks) were 0.252 d-1 and 586.5 mg/l, respectively. The results indicated that the applied kinetic model is capable of explaining the bio-kinetic behaviour of the CSTR-UASB system and can be used as a design criteria for two-phase anaerobic treatment treating other fat-containing wastewater.