Microbiological investigation of activated sludge in sequencing batch bioreactor for urban wastewater treatment

Abstract

This study presents measurement of containment parameters of wastewater obtained from influent and effluent of sequencing batch bioreactor (SBR). Arcella Sp. dominantly encountered in Sample I from Karaman-Adapazari-Sakarya Urban Wastewater Treatment Plant in Turkey. Amount of cells belonging to Difflugia Sp., however, had increased for Sample II. In Sample Ill, Arcella Sp., and Difflugia Sp. lost their dominance, whereas Didinium Sp., Aspidisca Sp., Targidrade Sp., and Peranema Sp., were encountered. This finding indicates that protozoa and metazoan population in activated sludge enable daily control of wastewater treatment efficiency.