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해산어 양식수중의 암모니아성 질소의 오존분해에 관한 실험실적 연구
허목,오희부 제주대학교 해양연구소 1998 해양자원연구소연구보고 Vol.22 No.-
The dissolution and reaction of ozone in sea water with bromide has been tested. In order to obtain the optimal amount of injected ozone which is needed for the oxidation of ammonia in sea water, dissolved ozone concentration and temperature have changed into three conditions, which are 1, 1.5. 2.5 mg/L and 15, 20, 23℃ respectively. In this study, Ammonium nitrogen has been injected with different concentration of 0.5. 1, 1.5 and 2mg/L at each Run and at Run 3 which has high dissolved ozone concentration. 5 and 10mg/L of NH_(4)-N has been added. pH has decreased rapidly in ten minutes in accordance with denitrification of ammonium nitrogen. With increasing ammonium nitrogen concentration, it has decreased significantly within five minutes and then slowly. In the rate of 1-2.5mg/L of injected ozone concentration, the removal efficiency of ammonium nitrogen has increased clearly with increasing ozone concentration. In the course of denitrification, the variation of nitrate nitrogen and nitrite nitrogen has scarcely been measured. This is considered that ammonium nitrogen has been denitrified by a complicated mechanism rather than by a simple removal through its oxidation. and has been emitted into the air as nitrogen gas in a short time.