Methods of ultimate carbonaceous BOD determination

摘要: During the period April 1975 to June 1978, U. S. Geological Survey conducted a river quality assessment of Upper Chattahoochee River basin in Georgia. One objective study was assess magnitudes, nature, and effects point nonpoint sources pollution River. As similation organic load from municipal wastewater discharges greater Atlanta area shown exert most impact on dissolved oxygen (do) regime downstream during warm weather, low-flow periods.1 The amount rate stream deoxygenation caused by oxida tion wastes were measured ultimate carbonaceous biochemical de mand (bodu) determination. Sawyer Mc Carty 2 defined bodu as total consumed microorganisms oxi dize decomposable material, Phelps 3 theorized that "the oxidation matter is proportional remaining concentration unoxidized sub stance, terms oxidizability." Municipal often con tain significant concentrations ammonium, which can interfere with determination extended periods incubation beyond traditional 5-day bod test period. bod, determined subtracting final do centration initial concentration, does not provide data user any indica reaction or demand car bonaceous material. Therefore, several methods evaluated develop an accu practical technique for determining both its (&i), particularly large number samples. scope this paper includes discussion meth ods studied, results, evaluations their use intensive field data-collection efforts.