Removal of Malodorous Gases Emitted from a Wastewater Pumping Stations by Biological Methods

생물학적 방법에 의한 하수 중계펌프장의 악취제거

  • 류희욱 (숭실대학교 환경ㆍ화학공학과)
  • Published : 2004.09.01

Abstract

To select a promising technologies for removal of odorous gases emitted from a wastewater pump station, four methods such as activated carbon (A/C) adsorption, chemical absorption (acid and alkali scrubber), and two biofilters (polyurethane (PU) and worm cast) were investigated. The average odor removal efficiencies in the PU biofilter and A/C column was over 98%, but in a worm cast biofilter and chemical absorption were below 60-80%. The removal efficiency of PU biofilter was very stable (about 98-99%) in the range of retention times of 4-36s, and a maximum elimination capacity was $1.6${\times}$10^{ 7}$ $OUm^{-3}$$h^{-1}$ Deodorization costs for an activated carbon adsorption and a biofiltration method were investigated. With increasing odor intensity, the operating cost of the A/C column increased linearly, but the operating cost of the biofilteration increased slightly. The capital cost in a biofilter is about two times higher than that in an A/C column, but the operating cost is very lower than that of in A/C column. In conclusion, the biofiltration was evaluated one of the most promising technologies to control odor in a wastewater pump station.

하수 중계펌프장에서 발생되는 악취를 효율적으로 저감할 수 있는 기술로 4가지 기술(활성탄 흡착법, 약액세정법, 지렁이 분변로를 이용한 탈취법, 바이오필터법)의 탈취 효율과 경제성을 조사하였다. PU 바이오필터와 활성탄 흡착법의 평균탈취 효율은 98% 이상이었으나, 지렁이 분변토 바이오필터와 약액세정법은 60-80%의 탈취율을 보였다. PU 바이오필터 탈취 성능은 악취가스의 체류시간이 4-36초에서 체류시간과 무관하게 약 98-99%로 매우 안정적이었고, 최대 탈취능은 으로 평가되었다. $1.6${\times}$10^{ 7}$ $OUm^{-3}$$h^{-1}$ PU 바이오필터와 활성탄 흡착법의 탈취비용을 조사하였다. 악취 강도가 증가함에 따라 활성탄 흡탁법의 운전비는 선형적으로 증가하였지만 바이오필터법은 약간 증가하였다. 바이오필터의 초기 시설비의 비용이 활성탄 흡탁법의 2배 이상이었지만 운전비가 활성탄 보다 아주 저렴한 것으로 평가되었다. 결론적으로 탈취효율과 경제성이 우수한 생물여과법이 가장 유망한 기술로 평가되었다.

Keywords

References

  1. Trans. ASAE v.27 Using odor control technology to support animal agriculture Barth, C. L.;F. L. Elliott;S. W. Melvin https://doi.org/10.13031/2013.32885
  2. Kor. J. Environ. Imp. Asses. v.9 Effect of temperature on ammonia removal in a ceramic biofilter inoculated with a earthwarm cast Cho, K. S.
  3. J. Ferment. Bioeng. v.73 Enhanced removal efficiency of malodorous gases in a pilot-scale peat biofilter inoculated with Thiobacillus thioparus DW44 Cho, K. S.;M. Hirai;M. Shoda https://doi.org/10.1016/0922-338X(92)90230-R
  4. Biofiltration for air pollution control Devinny, J. S.;M. A. Deshusses;T. S. Webster
  5. Water Environ. Res. v.64 Bench-scale removal of odor and volatile organic compounds at a composting facility Durme, G. P. V.;B. F. McNamara;C. M. McGinley https://doi.org/10.2175/WER.64.1.4
  6. J. Microbiol. Biotechnol. v.13 Benzene biodegration using the polyurethane biofilter immobilized with Stenotrophomonas maltophilia T3-c Kwon, H. H.;E. Y. Lee;K. S. Cho;H. W. Ryu
  7. J. Environ. Qual. v.31 Hydrogen sulfide effects on ammonia removal by a biofilter seeded with earthworm casts Lee,E. Y.;K. S. Cho;H. D. Han;H. W. Ryu https://doi.org/10.2134/jeq2002.1782
  8. Kor. J. Microbiol. Biotechnol. v.30 Removal of malodorous gases from swine manure by a polyurethane biofilter inoculated with heterotrophic and autotrophic bacteria Lee,Y. O.;C. K. Cho;H. W. Ryu;K. W. Cho
  9. Odor Prevention and Control of Organic Sludge and Livestock Farming Covering Manure Storing Tanks to Control Odor Mannebeck, H.;Neilsen, V.C.(Ed.);Voorburg, J. H.(Ed.);Hermite, P. L.(Ed.)
  10. J. Odor Res. Eng. v.24 The chatacteristic of odor emitted from sewage and nightsoil treatment plants in Korea Park S. J.;H. J. Oh;O. Seishi
  11. Kor. J. Odor Res. Eng. v.2 A study on odor concentration of malodorous gases emitted from sewage treatment plants using air dilution sensory test Park, S. J
  12. J. Ferment. Bioeng. v.76 Removability of malodorous gases from a noght soil treatment plant by a pilot-scale peat biofilter inoculated with Thiobacillus thioparus DW44 Park, S. J.;K. S. Cho;M. Hirai;M. Shoda https://doi.org/10.1016/0922-338X(93)90053-B
  13. Kor. J. Microbiol. Biotechnol. v.30 Characteristics of ammonia removal in biofilters inoculated with earthwormcast Ryu, H. W.;H. D. Han;K. S. Cho