Organic Waste Reduction by Co-digestion of Slaughterhouse Wastewater and Domestic Sludge

This research was executed to investigate the reduction of the volatile and solid matter in the Co-digestion of slaughterhouse wastewater (SHW) with primary sludge (PS). Lab-scale experiment was executed at mesophilic condition (35 ± 2°C). 600 ml serum bottles were used to mimic batch bioreactors. Among others total solids content (TS), volatile solids (VS) were measured before and after the digestion process. In addition to recording the daily biogas and methane production. The experiment showed that PS achieved maximum volatile solid reduction (49%), while the organic stabilization percentage of each SHW and Co-digestion mixture (Co) were 29.1% and 44.4% respectively. The solid stabilization was at maximum value (63%) at PS reactor compared to SHW and co-reactors (39.5% and 49.8% correspondingly).