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흡착, 습식세정 및 흐름방식이 활성탄 담체 바이오필터에 의한 H2S 제거에 미치는 영향
Effects of Adsorption, Wet Scrubbing, and Flow Pattern on Activated Carbon-Packed Biofilter for H2S Removal
조이엔틱(주), 608-739 부산시 남구 용당동 산 100, 부경기술산업단 405호 1부경대학교 화학공학부, 608-739 부산시 남구 용당동 산 100 2부경대학교 환경시스템공학부, 608-739 부산시 남구 용당동 산 100 3부경대학교 식품생명공학부, 608-739 부산시 남구 용당동 산 100
Joy Entech Co. Ltd., 405 Pukyong Business Incubator Center, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea 1Division of Environmental System Engineering, Pukyong University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea 2Division of Food Science and Biotechnology, Pukyong University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea 3Division of Chemical Engineering, Pukyong University, San 100, Yongdang-dong, Nam-gu, Busan 608-739, Korea
mglee@pknu.ac.kr
HWAHAK KONGHAK, April 2003, 41(2), 271-276(6), NONE
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Abstract
활성탄 충전 바이오필터의 H2S 제거능을 조사하였다. 활성탄 자체의 H2S에 대한 흡착능은 0.1 g-H2S/g-media로 산정되었으며, 100 ppm의 유입농도와 15초의 EBCT(공탑접촉시간) 조건하에서 습식세정에 의한 H2S 제거실험의 결과 세정에 의한 효율은 약 40% 정도로 나타났다. 활성탄과 Bacillus 균주를 충전한 본 바이오필터에 유입 H2S 농도를 100-600 ppm, EBCT를 15초로 운전시 99.9% 이상의 안정된 제거율을 얻을 수 있었다. H2S의 유입부하가 200 g-H2S/m(3)ㆍhr 이하에서는 100%의 제거율을 보였으며, 최대제거용량은 258 g-H2S/m(3)ㆍhr(10.67 g-H2S/kg-mediaㆍday)으로 산정되었다. 또한 배수 중의 pH가 2이하로 유지되어도 미생물에 대한 저해작용 없이 안정된 제거효율을 유지하였다. 상향류와 하향류 운전방식의 비교 결과 상향류의 제거효율 및 제거용량이 10% 정도 높게 나타났다.
The performance of an activated carbon-packed biofilter for the removal of H2S was investigated. The adsorption capacity of the activated carbon itself for H2S was estimated to be 0.1 g-H2S/g-media, and the removal efficiency of H2S on the condition of wet scrubbing was about 40% under the conditions of 15 sec EBCT(Empty Bed Contact Time) and 100 ppm of influent H2S concentration. The biofilter packed with activated carbon and Bacillus sp. showed stable removal efficiency higher than 99.9% for the inlet concentration of H2S ranged from 100 to 600 ppm under 15 sec EBCT. When the inlet loading of H2S was less than 200 g-H2S/m(3)ㆍhr, the removal efficiency of H2S reached 100%. The maximum elimination capacity of H2S was determined to be 258 g-H2S/m(3)/hr(10.67 g-H2S/kg-mediaㆍday). During operation, the biofilter exhibited stable removal efficiency without any inhibition to the microorganisms even when the pH in the drain water maintained below 2. The removal efficiency and the elimination capacity of H2S in the upward flow biofilter were about 10% higher than those in the downward flow biofilter.
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