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감태폐수의 송이 여과층 높이에 따른 여과속도와 용량인자에 관한 연구
A study on the Filtration Rate and the Capacity Factor of Brown Seaweed Wastewater with Scoria Filll Bed Height
HWAHAK KONGHAK, December 1992, 30(6), 731-737(7), NONE
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Abstract
본 연구는 제주도에 풍부한 송이(scoria)의 효율적인 활용방안으로서 송이를 여과매질로 이용하여 알긴산 공장의 주 폐수원인이 되는 감태(Ecrlonia cava)추출폐수에 대한 여과능력을 조사하였다. 매질은 작을수록, HRT(수력학적 체류시간)는 길어질수록 SS제거 효율은 더 좋았다. 송이의 입자 크기가 같을 경우는 초기 SS농도가 높을 경우 보다는 낮을 경우가 제거효율이 좋았다. HRT가 높을수록 두손실 3.0m에 도달시간은 길었으며, SS의 축적은 두손실에 크게 영향을 받는 것으로 나타났다. 실험으로부터 구한 제거속도식은 모델식과 잘 부합하였으며, 여과용량 σu 는 2.94-3.43g/l, 부착율 K는 2.34-2.66l/gㆍhr이었다.
This study was conducted for the efficient utilization of a scoria, which is abundantly found in cheju island, as filtration medium and the scoria was examined for its performance in clarification of waste water extracted from a brown algae(Ecklonia cava), the mian waste source of alginic acid. The smaller media and the longer HRT(hydraulic retention time) showed higher SS removal efficiency. Under the experi-ments of the same scoria size the SS removal effiiciency was shown more effective at lower initial concentration than at higher initial concentration. The higher HRT took longer time to reach headloss 3.0m and the accumu-lation of SS was suspected to have great influence on the headloss. The removal rate equation obtained from experiments was consistent with model equation. The filter capacity σu was 2.94-3.43g/l and clogging rate K was 2.34-2.66l/gㆍhr.
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