KINETIC-ANALYSIS OF AN ANAEROBIC FILTER TREATING SOYBEAN WASTE-WATER

An investigation into the kinetics of the treatment of soybean wastewa ter in an anaerobic filter is described. The substrate loading removal rate was compared with predictions from a modified Stover-Kincannon m odel, the Monod model and a regression relationship. The modified Stov er-Kincannon model produced the best fit with the experimental results . The modified Stover-Kincannon model could also be used to determine the reactor volume required to decrease a set influent organic concent ration to a given effluent concentration, or to determine the effluent substrate concentration for a given volume of an anaerobic filter. an d influent organic concentration. The overall reaction order in the an aerobic filter treating soybean wastewater appeared to be close to hal f order. The methane production kinetics could be described by a simil ar relationship that used to describe the organic substrate removal ki netics of the anaerobic filter treating soybean wastewater. The kineti c relationships derived from the lab-scale experiment provided good es timates of the performance of pilot- and full-scale anaerobic filters packed with the same media and treating the same wastewater in terms o f the effluent chemical oxygen demand (COD) concentrations and the spe cific methane production rates. (C) 1998 Elsevier Science Ltd. All rig hts reserved.