해수 조건에서 총암모니아성 질소 부하량과 수리학적 공기 부하량에 따른 유동상 여과조의 질산화 성능 평가
The purpose of this study was to assess the efficiency of nitrification based on ammonia loading rates and hydraulic air-loading rates in a moving bed bioreactor (MBBR) under seawater conditions. The goal was to provide foundational data for the design of these bio reactors. At an ammonia loading ra...
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Published in | 한국수산과학회지 Vol. 56; no. 6; pp. 870 - 877 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | Korean |
Published |
한국수산과학회
2023
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Subjects | |
Online Access | Get full text |
ISSN | 0374-8111 2287-8815 |
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Summary: | The purpose of this study was to assess the efficiency of nitrification based on ammonia loading rates and hydraulic air-loading rates in a moving bed bioreactor (MBBR) under seawater conditions. The goal was to provide foundational data for the design of these bio reactors. At an ammonia loading rate of 0.2 g TAN·m -2 surface area·day -1 , the influent TAN concentration was determined to be 1.76±0.33 mg·L -1 , which is below the safe concentration for fish survival (2 mg·L -1 ). Considering operational aspects, the optimal ammonia-loading rate was derived. Subsequently, experi-mental results for nitrification efficiency at the optimal ammonia-loading rate revealed that the optimum hydraulic air-loading rate was 1.8 L·air·m -2 surface area·min -1 . This condition resulted in the lowest concentrations of TAN and NO 2 -N in the influent water, thus establishing the optimal hydraulic air-loading rate. A regression equation was derived for the ammonia-removal rate (Y) based on the ammonia-loading rate (x) and expressed as a 0.5-order equa-tion (Y=ax 0.5 +b). Specifically, for TAN concentrations of 0-6 mg·L -1 , the regression equation Y=0.1683x0.5-0.13628, was established. |
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Bibliography: | The Korean Fisheries Society KISTI1.1003/JNL.JAKO202304644242330 |
ISSN: | 0374-8111 2287-8815 |