ABSTRACT
This chapter presents results from laboratory-scale tests conducted to study bioremediation of hazardous constituents in primary sludge generated at a large organic chemicals manufacturing plant. The primary objectives of this study were to investigate the bioremediation potential of primary pond (PP) and CP sludges in a laboratory-activated sludge system and to evaluate the potential effect of these solids on the overall treatment performance. The percent destruction of CP and PP solids was estimated based on a solids mass balance around each treatment system. Based on the bench-scale test results, it was concluded that both the current-make and the impounded primary sludges can be effectively bioremediated in the existing WWTF without adversely affecting the overall wastewater treatment facility performance. The PP solids seem to improve the compactibility of biological solids, probably by providing nuclei for enhanced flocculation.
