Influence of spent drilling mud on sedimentation time of activated sludge flocs

Abstract Co-treatment of drilling muds with municipal wastewater in the reactors operating on activated sludge principle constitutes a potentially safe method their disposal. The is based process biological degradation pollutants by assemblages organisms (prokaryotic and eukaryotic), which include different species described as functional trophic groups. When ecosystem bioreactor equilibrium, high treatment efficiency stability can be achieved. Analysis qualitative quantitative changes occurring may facilitate understanding causes mechanisms involved observed processes. In such context, using model an SBR plant, study was performed to assess feasibility co-treating spent mud method. floc basic structural physiological unit forming sludge. this study, sedimentation velocity flocs analysed, obtained results were subjected statistical analysis.