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Effect of Biofilter Made of Composted Pine Tree Bark and Perils on Reducing Odor from Pig House

부숙수피-펄라이트 혼합충전재의 돈사악취 제거 효과

  • Lee, Seung-Joo (College of Agriculture and Life Science, Chungnam National University) ;
  • Chang, Dong-Il (College of Agriculture and Life Science, Chungnam National University) ;
  • Chang, Hong-Hee (Institute of Agriculture and Life Sciences, Gyeonsang National University)
  • 이승주 (충남대학교 농업생명과학대학) ;
  • 장동일 (충남대학교 농업생명과학대학) ;
  • 장홍희 (경상대학교 농업생명과학연구원)
  • Published : 2006.06.30

Abstract

To remove effectively order component ($NH_3\;and\;H_2S$) from pig house, biofilter was made of composted pine tree bark and polite and odor removal efficiency was evaluated in the lab and pilot scales. The columns were designed with ${\Phi}120mm{\times}450mm$ (H) and ${\Phi}850mm{\times}900mm$ (H) in the size in the lab and pilot scale testes, respectively. Single material of composted pine tree bark and polite and the mixture of two materials with 7:3 ratios (vol/vol) were packed in the column, and, herein air flow was controlled upward direction from column bottom. To enhance the efficiency of biofilter, ammonia (Rhodococcus equi A3) and hydrogen sulfide oxidizing bacteria (Alcaligenes sp. S5-5.2) were inoculated in packing materials before the test Removal effect of ammonia and hydrogen sulfide gases were higher in the mixture$[88.7{\sim}98.2%,\;89.5{\sim}97.9%]$ than that in single packing material (composted pine tree haft$[89.4{\sim}98.7%,\;78.7{\sim}85.6%]$ and petite$[65.3{\sim}73.2%,\;88.7{\sim}98.2%]$ by the lab scale biofilter. In the modeled pig house, about 96 and 91% of ammonia and hydrogen sulfide gases were removed by the pilot scale of biofilter, respectively. Conclusively, composted pine tree bark and polite could be a good candidate of biofilter packing materials to remove the odor components.

국내에서 구입이 용이한 단일충전재(부숙수피, 펄라이트)와 혼합충전재(부숙수피와 펄라이트의 부피비 7:3)에 암모니아 산화균 Rhodococcus equi A3와 황 산화균 Alcaligenes sp. S5-5.2를 접종한 후, 양압식 상향류식의 lab-scale 바이오필터에 각각의 충전재를 충전하여 암모니아 및 황화수소에 대한 악취가스 제거 성능을 평가 한 결과, 혼합충전재가 단일 충전재에 비하여 악취제거 성능이 우수한 것으로 분석되었다. 또한 암모니아의 경우 $180.0{\pm}20.0mg\;L^{-1}$ 농도로 유입되는 상황에서 $70.0{\pm}0.8mg\;L^{-1}$로 배출되어 제거율이 96.1%이었으며, 그리고 황화수소의 경우 $11.0{\pm}5.0mg\;L^{-1}$ 농도로 유입되는 상황에서 $1.0{\pm}0.4mg\;L^{-1}$로 배출되어 제거율이 91.1%이었다. 또한 이때의 미생물 생균수는 실험기간 동안 접종 초기 미생물 생균수와 거의 같게 유지되었다. 따라서 부숙수피와 펄라이트를 혼합하여 만든 혼합충전재의 악취제거 성능이 우수하고 가격이 저렴한 것을 고려해 볼 때, 혼합충전재가 기존의 다른 충전재보다 대규모 축산농가에서 현실적으로 이용하는데 유리할 것으로 판단된다.

Keywords

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