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생물화공 에너지 / 환경 / 포말분리기를 이용한 해수로부터 양식 폐기물 제거 1. 초기 단백질 농도 영향
서근학(Keun Hack Suh),김병진(Byong Jin Kim),봉세환(Se Hwan Bong),임준혁(Jun Heok Lim),김용하(Yong Ha Kim),김성구(Sung Koo Kim) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.5
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 protein 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%.
양어장수내의 암모니아성 질소제거를 위한 질화세균군의 고정화
김성구,서재관,이종석,공인수,서근학,KIM Sung-Koo,SEO Jae-Koan,LEE Jong-Seok,KONG In-Soo,SUH Keun-Hack 한국수산과학회 1997 한국수산과학회지 Vol.30 No.5
최근 biotechnology 발전과 같이하여 미생물 고정화법이 급속히 진보하였다. 도처에 있는 biological midia로부터 products를 추출하기 위해 미생물 고정화법은 많이 적용되고 있지만 아직 하수처리에 적용은 되고 있지 않다. 그러므로 본 연구에서는 순환 양식 시스템에 고정화기술의 적용 가능성을 타진하였다. fludized bed reactor에서 bead에 고정화된 질화세균군을 사용하기 위해서는 고정화 bead의 내구성이 높아야함으로 각 고정화법에 따른 강도는 $Ba^{++}-alginate$ bead가 1450g의 breaking force로 가장 높은 내구력을 지니고 있음으로 가장 적합한 bead라고 할 수 있었다. 또한 20 mg/L ammonium ion을 제거 하는데 $Ba^{++}-alginate$ bead는 다른 두 bead보다 훨씬 논은 활성을 나타내었으며, 아울러 고정화 질화세균군이 비고정화 질화세균군보다 높은 질화 효율을 보여 주었다. The immobilization of a microorganism has been rapidly progressed with the development of biotechnology in recent years. Although it has been used as a tool to isolate products from biological media in various areas, it has not yet been practiced in the treatment of waste water. In this paper, we suggest a possibility to apply the immobilization technique In the recirculating aquaculture system. We examined the ability of $NH_4^+$ removal by nitrifier consortium immobilized in $Ba^{++}-alginate$, k-carrageenan and agar bead at the concentration of 50 g/L, respectively. In order to use the immobilized nitrifier consortium as media in the fludized bed reactor, the strength of bead was measured. $Ba^{++}-alginate$ as a support material showed higher strength of bead. Also, the nitrifier consortium immobilized in $Ba^{++}-alginate$ showed higher nitrification activity that could remove 20 mg/L ammonium ion than those immobilized in other two support materials, carrageenan and agar. The immobilized nitrifier consortium showed better nitrification activity than free nitrifier consortium.
생물화공 에너지 / 환경 / 자성 유체분리에 의한 오수의 고도처리
김용하(Yong Ha Kim),여평모(Pyong Mo Yeo),신수희(Su Hee Shin),서근학(Keun Hack Suh),김행구(Hang Goo Kim),오창섭(Chang Sup Oh) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.5
A magnetic fluid separation is applied to the advanced treatment of sewage for removing the suspended solids which discharged as being entrained in the effluent from the final settling pond. In this study, the correlation with the concentration of suspended solids in the sewage and COD, with the solid concentration and turbidity, and the effects of operating parameters on the removal of the pollutant materials from the sewage were investigated. It is expected that COD and turbidity in sewage can be reduced by the removal of suspended solids in the sewage. And in result, turbidity was most strongly affected by the removal, and followed by ICOD and TCOD. In the present study, the concentration of suspended solids, TCOD and turbidity could be kept below 20 g/㎥, 60 g/㎥ and 16 NTU, respectively. The feasibility, therefore, of the magnetic fluid separation as an attractive technology for the advanced treatment of sewage was verified. However a special treatment for the extra reduction of TCOD in the clarified sewage is necessary.