분뇨의 처리방법에 따른 제거효율과 부하량 비교 = Comparison of the Removal Efficiency and the Pollutant Loading by Each Nightsoil Treatment Method

다국어 초록 (Multilingual Abstract)

This research was conducted to evaluate the removal efficiency and the pollutant loading in AOD(Aerobic Digestion+Oxidation Ditch)plant, AAS(Aerobic Digestion+Activated Sludge)Plant, ANA(Anaerobic Digestion+Activated Sludge)plant and ACC(Aerdbic Digestion+Chemical Coagulant)plant for nightsoil treatments. The anual collection amount of nightsoil and septage in AOD, AAS, ANA and ACC treatment plants were 6,328.4, 7,418.3, 18,246.5 and 5,106.5 kl/year, and the ratio of nightsoil to septage of these were 12:1, 2:1, 1:1 and 3:1 respectively. The removal efficiency of BOD, SS, TKN and TP in ACC plant were 98.2, 98.4, 65.6 and 98.0% respectively, which was the highest removal efficiency of the four plants. The loading amount of BOD, SS, TKN and TP loaded into the river per the collected nightsoil in ACC treatment plant were 0.06, 0.08, 0.4 and 0.02㎏/㎥/day, and the average loading amount of the other three treatment plants were 0.74, 1.33, 1.20 and 0.27㎏/㎥/day respectively.