Over the study, the average temperature was 24.5 ` 5.4 C, and pH values were 7.3 ` 0.4 for the untreated wastewater samples and 7.4 ` 0.2 for the effluents released by the anaerobic filters. The average COD of the untreated wastewater was 982 ` 424 mg2 L1, and BOD was 385`189mg1 on average.