| Successful treatment of low strength aircraft deicing fluid (ADF) was achieved using the Anaerobic Baffled Reactor (ABR), under different hydrological retention times (HRT) and COD influent concentrations. A total of 17 experimental runs were conducted in continuous mode, achieving COD removal efficiencies of over 75% for most of the conditions tested. During this experiment different ADF concentrations (0.04%, 0.07%, and 0.13% v/v) were continuously fed at different HRTs (24, 12, 6 and 3 hrs) at organic loading rates (OLR) varying between 0.3 and 6 kg COD/m3/d. The performance of the reactor was determined by the COD removal efficiency at the different OLRs. The best COD removal was reached at high COD influent concentrations and HRTs, for the lowest HRTs essayed COD removal efficiency dropped to an average of 65% for the 3 COD influent concentrations tested. Methane production potential were close to the theoretical value of 0.39 L CH4/g COD removed at 35°C.;The effect of biomass pre-acclimation was also evaluated and it was found to be effective in increasing specific acetoclastic activity for this type of wastewater in order to reduce the time needed for acclimation. (Abstract shortened by UMI.). |
