입상 전로슬래그를 정석재 및 여재로 이용한 인제거와 여과의 동시처리 (Simultaneous Handling of Phosphorus Removal and Filtration using Granular Converter Slag as Seed Crystal and Filter Media)

서지정보

· 발행기관 : 한국수처리학회
· 수록지 정보 : 한국수처리학회지 / 16권 / 4호 / 45 ~ 54페이지
· 저자명 : 김응호, 임수빈

초록

This study was conducted to investigate the characteristics of simultaneous handling of phosphorus removal and filtration using granular converter slag as seed crystal and filter media. The experimental results using column reactor packed with granular converter slag showed that average removal efficiencies were 98% for phosphorus and 96% for suspended solids under the condition of LV = 1.1 m/hr. As linear velocity increased, phosphorus removal efficiency was reduced while suspended solids(SS) removal efficiency was maintained high (more than 96%) regardless of scale of linear velocity. The mass balance analysis of soluble and non-soluble phosphorus in backwashed solution exhibited that nearly 70% of total phosphorus was eliminated by phosphorus crystallization reaction and approximately 30% by coagulation-precipitation reaction. The headloss generated from top up to depth of 20cm in column reactor corresponded to more than 50% of total headloss, indicating that suspended solids in the system are eliminated mainly by top-layer filtration. For secondary treated wastewater in N-wastewater treatment plant, the removal efficiencies of phosphorus and SS in the system were observed to be 96.9% and 91.9 %, respectively. The experimental results suggests that simultaneous elimination of phosphorus and SS could be successfully achieved by phosphorus crystallization system using granular converter slag as seed crystal and filter media.

영어초록

This study was conducted to investigate the characteristics of simultaneous handling of phosphorus removal and filtration using granular converter slag as seed crystal and filter media. The experimental results using column reactor packed with granular converter slag showed that average removal efficiencies were 98% for phosphorus and 96% for suspended solids under the condition of LV = 1.1 m/hr. As linear velocity increased, phosphorus removal efficiency was reduced while suspended solids(SS) removal efficiency was maintained high (more than 96%) regardless of scale of linear velocity. The mass balance analysis of soluble and non-soluble phosphorus in backwashed solution exhibited that nearly 70% of total phosphorus was eliminated by phosphorus crystallization reaction and approximately 30% by coagulation-precipitation reaction. The headloss generated from top up to depth of 20cm in column reactor corresponded to more than 50% of total headloss, indicating that suspended solids in the system are eliminated mainly by top-layer filtration. For secondary treated wastewater in N-wastewater treatment plant, the removal efficiencies of phosphorus and SS in the system were observed to be 96.9% and 91.9 %, respectively. The experimental results suggests that simultaneous elimination of phosphorus and SS could be successfully achieved by phosphorus crystallization system using granular converter slag as seed crystal and filter media.

참고자료

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