Full Description

This powerpoint presentation begins by providing a brief overview of biological drinking water treatment. Research objectives include the following: determine the level of disinfection necessary for a biological drinking water treatment; examine inactivation kinetics for a mixed community of microorganisms (most research efforts used pure cultures); and, elucidate mechanisms to explain the observed inactivation kinetics. A lab-scale biologically active carbon reactor was used including a fixed bed reactor containing granular activated carbon (GAC), microbial oxidation of perchlorate (ClOsub4/subsup-/sup) and nitrate (NOsub3/subsup-/sup, with the addition of acetate as electron donor topromote cell growth. The experimental conditions included: effluent of BAC reactor; monochloramine as disinfectant; batch reactors at pH 8 and 20C; Heterotrophic Plate Count (HPC)using R2A agar; and, the U.S. Environmental Protection Agency's Surface Water Treatment Rulerequiring 500 colony forming units (CFU) per mL. The results of disinfection experiments are presented, along with modeling of inactivation kinetics, the application of 3 population models, the hypothesis for the second and third phases, the results of the filtration experiments, Colony PCR, and the results of Colony PCR for NF and 5 m filtrate. Includes table, figure.

Product Details

Edition: Vol. - No. Published: 11/01/2009 Number of Pages: 2File Size: 1 file , 900 KB