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IMPACT OF INFLUENT MICROORGANISMS UPON POOR SOLIDS SEPARATION IN THE QUIESCENT ZONE OF AN INDUSTRIAL WASTEWATER TREATMENT SYSTEM
Citation:
Oerther, D. B., P. G. Stroot, R. Butler, S. Gelman, I. Beydilli, S. Dudley, AND J M. Simpson*. IMPACT OF INFLUENT MICROORGANISMS UPON POOR SOLIDS SEPARATION IN THE QUIESCENT ZONE OF AN INDUSTRIAL WASTEWATER TREATMENT SYSTEM. Presented at WEFTEC 2002 Annual Conference, Chicago, IL, 9/28-10/2/2002.
Description:
One of the most common biological treatment systems used to clean wastewater is suspended growth activated sludge wastewater treatment (AS). When AS is adapted for the treatment of wastewater from industrial manufacturing processes, unanticipated difficulties can arise. For the successful operation of an AS system, particulate biomass and particulate solids must be separated from the liquid stream. Often, this separation is conducted in a quiescent tank reactor known as a secondary clarifier, where biomass and solids are separated from the liquid stream by gravity sedimentation. The overall goal of this study was to identify microbial causes of poor biomass and solids separation for an activated sludge system treating an industrial wstewater. Novel techniques for culture-independent identification and enumeration of microorganisms were used to determine the predominant microbial populations in samples from the influent, within the process and from the effluent of the industrial As (IAS) system.