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이춘식,최종수,박승조 동아대학교 환경문제연구소 1993 硏究報告 Vol.16 No.1
We were investigated with biodegradation of natural detergent by using jar-test, column test and activated sluge process. We were studied the BOD loading rate, the removal rate of organic material, the relationship between F/M, ratio, BOD and SS, SRT and MI, VSS/MLSS ratio. The results are summarized below. 1. In case of column height 160cm, suspended solid removal rate was 60.93%, COD, BOD and SS removal rate were 40%, 33% and 87% repectively in jar-test. In this case dosage of coagulant was 40.9g/㎥ alum, 4.5g lime/㎥ and 0.4g/㎥ polymer. 2. Wastewater containing natural detergent concentrationabout 600-1300mg/l was treated with activated sludge process and then removal rate of BOD is 80% in winter atmospheric temperature. In this case BOD concentration was about 10mg/l. 3. Wastewater containing natural detergent was treated with activated sludge process and then BOD volumetric loading rate is 0.3-0.8kg BOD/㎥·d. In this case BOD removal rate was about 90 %, MLVSS/MLSS ratio was 0.4-0.5 and SVI is 60-200.