LOW-TEMPERATURE KINETICS OF ANAEROBIC-FILTER WASTE-WATER TREATMENT

The effects of wastewater temperature on treatment efficiency in an an aerobic-filter process were examined based on laboratory data on anaer obic filters treating septic-tank effluent, dairy wastewater; slaughte rhouse wastewater potato-processing wastewater and whey wastewater Thr ee anaerobic filters were operated at 5, 10 and 20 degrees C treating septic-tank effluent at different hydraulic retention times (HRTs), th ree anaerobic filters treating dairy wastewater were operated at 12.5, 21 and 30 degrees C at different HRTs, an anaerobic filter treating s laughterhouse wastewater was operated at 23.6, 24.3, 25, 26.6, 26.7 an d 27.1 degrees C at different HRTs, an anaerobic filter treating potat o-processing wastewater was operated at 2, 4, 10 and 20 degrees C and an anaerobic filter treating whey wastewater was operated at 16, 20, 2 6 and 30 degrees C at different HRTs. Data were analyzed for the effec t of temperature using the Arrhenius equation and a relationship was d eveloped between system temperature and first-order rate constant for each anaerobic filter system. The simple kinetic model did not fit the experimental data very well for two of the three wastewaters tested. Copyright (C) 1996 Elsevier Science Ltd.