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HWAHAK KONGHAK,
Vol.38, No.5, 745-752, 2000
Vol.38, No.5, 745-752, 2000
포말분리기를 이용한 해수로부터 양식 폐기물 제거; I. 초기 단백질 농도 영향
The Removal of Aquacultural Wastes by Foam Separator from Sea Water ; I.The Effect of Initial Protein Concentration
본 연구에서는 공기부상식 포말분리기를 제작하여 해수 속의 단백질, 부유고형물, 화학적 산소 요구량, 탁도, 암모니아성 질소와 같은 양식 폐기물의 연속 제거운전을 수행하여 유입 단백질 농도에 따른 양식 폐기물의 제거 특성 및 포말분리기의 용존산소 공급 능력을 검토하였다. 단백질 제거속도는 초기 단백질 농도의 증가에 따라 증가하다가 최대치에 접근하는 형태로서 Langmuir 등온 흡착식과 잘 일치하였으며 총 부유고형물, 화학적 산소 요구량, 탁도 및 총 암모니아성 질소의 제거속도 또한 초기 단백질의 농도가 증가함과 동반하여 증가하였다. 초기 단백질 농도가 증가함에 따라 단백질의 제거율은 감소하였으며 총 부유고형물, 화학적 산소 요구량과 탁도의 제거율도 같은 경향을 나타내었으나 총 암모니아성 질소의 제거율은 증가하는 것으로 나타났다. 본 실험에 사용한 포말분리기는 96% 이상의 높은 용존산소 포화율을 나타내었다.
Experimental investigations on the effect of the initial protein concentration for the removal of aquacultural waste, such as protein, total suspended solids(TSS), turbidity, chemical oxygen demand(COD) and total ammonia nitrogen(TAN) from sea water were carried out by using foam separator. The foam separator as an aerator was also evaluated for increasing dissolved oxygen concentration. The experimental results of foam separator using sea water indicated that the removal efficiency of potein decreased with the increasing the initial protein concentration and the protein removal rate followed the Langmuir isotherm. The increase in the initial protein concentration increased the removal rate of TSS, COD, turbidity and TAN. The removal efficiencies of TSS, turbidity and COD were decreased with increasing the initial protein concentration, but TAN was increased. Dissolved oxygen(DO) saturation of effluent from foam separator was higher than 96%.
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