Treatment of slaughterhouse wastewater by intermittent cycle extended aeration system (ICEAS)

Abstract

This research conducts a slaughterhouse wastewater study with high nitrogen concentration by applying intermittent cycle extended aeration system (ICEAS) model combined with and without Mutag BioChip media to assessing the efficiency of this treatment. A model made from poly acrylic with a capacity of 18 L was utilized to evaluate COD and nitrogen removal efficiency for different organic loading rate (OLR). The results showed that removal efficiency of the ICEAS model combined with Mutag BioChip media was higher than one of the ICEAS model without Mutag BioChip media in terms of COD; NH4+ -N and TN parameters. At the OLR of 0.5 kg COD/m3.day, the corresponding treatment efficiency of these parameters was of 91.48%; 87.08% and 83.59%, respectively. In the case that the OLR increased up to 2.0 kg COD/m3.day, the corresponding treatment efficiency only decreases slightly. It proves that the use of Mutag BioChip media allowed to increase the removal efficiency for slaughterhouse wastewater treatment.