Journal of the Korea Organic Resources Recycling Association (유기물자원화)

Korea Organic Resources Recycling Association (유기성자원학회)
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Disintegration of Sewage Sludge Using Mechanical Pre-treatment

기계식 전처리를 이용한 하수슬러지의 가용화

  • 이채영 (수원대학교 토목공학과) ;
  • 유황룡 (수원대학교 토목공학과)
  • Received : 2009.09.03
  • Accepted : 2009.09.29
  • Published : 2009.09.30
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Abstract

Disintegration of sewage sludge (SS) was investigated by batch experiments using mechanical pre-treatment. Mechanical disintegration of SS increased the amount of soluble chemical oxygen demand (SCOD), protein and carbohydrate due to the break-up of cell walls. The mechanical disintegration incorporated with alkaline pre-treatment demonstrated higher amount of SCOD compared with mechanical one only. In terms of anaerobic biodegradability, mechanical pretreatment enhanced the anaerobic biodegradation of SS, leading to the methane production improvement. The improvement in BMP for SS treated with mechanical and alkaline-mechanical pre-treatments were 24.1% and 44.5%, respectively. This result suggested that disintegration of SS was effective for improving anaerobic biodegradability.

본 연구에서는 기계식 전처리에 의한 하수 슬러지의 가용화 효과를 회분식 실험을 통해 조사하였다. 기계식 전처리를 통한 하수슬러지의 가용화는 세포벽의 파괴로 통해 용존성 화학적 산소요구량, 단백질 및 탄수화물의 농도를 증가시키는 것으로 나타났다. 알칼리와 기계식 전처리를 병행하여 슬러지를 가용화한 결과 기계식 전처리만을 수행한 경우에 비해 용존성 화학적 산소요구량이 높은 것으로 나타났다. 혐기성 생분해도 측면에서 기계식 전처리는 메탄 발생량을 증가시키는 것으로 나타났다. 기계식과 알칼리 및 기계식 전처리를 동시에 수행한 경우 각각 24.1%와 44.5%의 생화학적 메탄 잠재능을 향상시키는 것으로 나타나 하수슬러지의 가용화는 혐기성 생분해도 향상에 효과적이다.

Keywords

References

  1. 환경부, 하수슬러지관리 종합대책(수정) (2008.5).
  2. Li, H., Jin, Y., Mahar, R., Wang, Z. and Nie,, Y., Effects and model of alkaline waste activated sludge treatment, Bioresource Technology, 99, pp. 5140-5144 (2008). https://doi.org/10.1016/j.biortech.2007.09.019
  3. Mata-Alvarez, J., Mac?, S., and Llabr?s, P., “Anaerobic digestion of organic wastes. An overview of research achievements and perspectives”, Bioresource Technology, 74, pp.3-16 (2000). https://doi.org/10.1016/S0960-8524(00)00023-7
  4. 한선기, 이채영, “초음파가 폐활성 슬러지의 혐기성 소화에 미치는 영향(I)-초음파 및 알칼리 전처리를 이용한 폐활성 슬러지의 가용화-”, 유기성자원화, 17(1), pp. 96-102 (2009).
  5. Weemaes, M. P., and Verstraete, J.,“Evaluation of current wet sludge integration techniques”, J. Chem. Technol. Biotechnol. 73, pp. 83-92 (1998). https://doi.org/10.1002/(SICI)1097-4660(1998100)73:2<83::AID-JCTB932>3.0.CO;2-2
  6. Novelli, A., Ottonello, F., Converti, A., Lodi, A., Rovatti, M., and Delborghi, M., “Alkalinehydrolysis for the treatment of the organic fraction of municipal solid-wastes and sludges”, Chem. Biochem. Engng. Quarterly 9, pp.195-199 (1995).
  7. Cassini, S.T., Andrade, M.C.E., and Abreu, T. A., Keller, R., and Goncalves R. F.,“Alkaline and acid hydrolytic processes in aerobic and anaerobic sludge: Effect on total EPS and fractions”, Water Sci. Technol., 53, pp. 51-58 (2006).
  8. Lin, J. G., Chang, C. N., and Chang, S. C., “Enhancement of anaerobic digestion of waste activated sludge by alkaline solubilization”, Bioresource Technology, 84, pp. 113-118.(1997).
  9. Kim, J. S., Park, C. H., and Kim, T. H.,“Effect of sludge cell disruption on compatibility of biological sludge”, Wat. Sci. Technol., 42, 119-126. (2003)
  10. 김희준, Nguyen, D. X., 이은영, 허안희, 배재호, “하수슬러지의 초음파 처리에서 가용화 효율에 미치는 여러 가지 인자들의 영향”, 대한환경공학회 2006 추계학술발표회 논문집, 강릉대학교, 11.2-11.3, pp. 583-588 (2006).
  11. Tiehm, A., Nickel, K., Zellhorn, M., and Neis, U., “Ultrasonic waste activated sludge disintegration for improving anaerobic stabilization”, Water Res., 35(8), pp.2003-2009. (2001). https://doi.org/10.1016/S0043-1354(00)00468-1
  12. Muller, J., “Disintegration as a key-step in sewage sludge treatment”, Water Sci. Technol. 41(8), pp. 123-130 (2000a).
  13. Muller, J., “Pretreatment processes for the recycling and reuse of sewage sludge”, Water Sci. Technol. 42(9), pp. 167-174 (2000b)
  14. Choi, H. B., Hwang, K. Y., and Shin, E. B., “Effects on anaerobic digestion of sewage sludge pretreatment”, Water Sci. Technol. 35, pp. 200-207 (1997).
  15. Nah, I. W., Kang, Y. W., Hwang, K. Y., and Song, W. K., “Mechanical pretreatment of waste activated sludge for anaerobic digestion process”, 34(8), pp. 2362-2368 (2000).
  16. Kampas, P., Parsons, S. A., Pearce, P., Ledoux, S., Vale, P., Churchley, J., and Cartmell, E., “Mechanical sludge disintegration for the production of carbon source for biological nutrient removal”, Water Res. 41, pp.1734-1742 (2007). https://doi.org/10.1016/j.watres.2006.12.044
  17. 김희준, 이은영, 허안희, Nguyen, D. X., 배재호, "수리동력학적 캐비테이션을 이용한 슬러지의 가용화", 대한상하수도학회.한국물환경학회 2006 공동 추계학술발표회 논문집, 11.15-11.16, pp.G133-G140 (2006).
  18. NGsT 기술자료.
  19. APHA-AWWA-WEF, Standard Methods for the Examination of Water and Wastewater. 18th edition, Am. Public Health Assoc., Washington, D. C., USA, (1992).
  20. Smith, P. K., Krohn, R. I., Hermanson, G. T., Mallia, A. K., Gartner, F. H., Provenzano, M. D., Fujimoto, E. K., Goeke, N. M., Olson, B. J., and Klenk, D. C., “Measurement of protein using bicinchoninic acid”, Anal. Biochem., 150, pp.76-85 (1985). https://doi.org/10.1016/0003-2697(85)90442-7
  21. Debois, M., Gilles, K. A., Hamilton, J. K., Rebers, P. A., and Smith, F. “Colorimetric method for determination of sugars and related substances”, Analyst. Chem., 28, pp. 350-356(1956). https://doi.org/10.1021/ac60111a017
  22. 이채영, 박승용, “하수슬러지의 초음파 전처리를 통한 가용화 및 혐기성 생분해도 향상”, 유기성자원학회지, 16(3), pp. 83-90 (2008).
  23. Zhang, H., Biochmistry Tutorial, third ed. Sichuan University Publishing Company, Chengdu, China, pp. 22-23, 33-34, 103 & 124.(2002).
  24. Liu, X., Lie, H., Chen, J., Du, G., and Chen, J., “Enhancement of solubilization and acidification of waste activated sludge by pretreatment”, Waste Management, 28, pp. 2614-2622 (2008). https://doi.org/10.1016/j.wasman.2008.02.001
  25. Jin, Y., Li, H., Mahar, R. B., Wang, Z., and Nie, Y., “Combined alkaline and ultrasonic pretreatment of sludge before aerobic digestion”, 21, Journal of Environmental Sciences, pp. 279-284 (2009). https://doi.org/10.1016/S1001-0742(08)62264-0
  26. Valo, A., Carrere, H., Delgenes, P., Thermal, chemical and thermochemical pre-treatment of waste activated sludge for anaerobic digestion”, J. Chem. Technol. Biotechnol., 79, pp.1197-1203 (2004). https://doi.org/10.1002/jctb.1106
  27. Wang, F., Lu, S., Ji, M., “Components of released liquid from ultrasonic waste activated sludge disintegration”, Ultrason. Sonoche. 13, pp.334-338 (2006). https://doi.org/10.1016/j.ultsonch.2005.04.008
  28. 박성현, 장성호, 정병길, “마이크로파 조사강도에 따른 하수슬러지의 전처리 특성”, 한국폐기물학회지, 24(1), pp. 45-53 (2007).
  29. Wang, Q., Kuninobu, M., Kakimoto, K., and Ogawa, HI., and Kato, Y., “Upgrading of anaerobic digestion of waste activated sludge by ultrasonic pretreatment”, Bioresource Technology, 68, pp. 309-313 (1999). https://doi.org/10.1016/S0960-8524(98)00155-2
  30. Ferrer, I., Ponsá, S., Vázquez, F., and Font, X.,“ Increasing biogas production by thermal ($70{^{\circ}C}$) sludge pre-treatment prior to thermophilic anaerobic digestion”, Biochemical Engineering Journal 42, pp. 186-192 (2008). https://doi.org/10.1016/j.bej.2008.06.020
  31. Climent, M., Ferrer, I., Baeza, M.M., Artola, A., V?zquez, F., and Font, X.,“Effects of secondary sludge pre-treatment on biogas production under thermophilic conditions”, Chem. Eng. J. 133 pp. 335-342 (2007). https://doi.org/10.1016/j.cej.2007.02.020
  32. Bougrier, C., Albasi, C., and Delgenes, J. P., Carrere, H., Effect of ultrasonic, thermal and ozone pre-treatment on waste activated sludge solubilization and anaerobic digestion, Chem. Eng. Process, 45, pp. 711-718 (2006). https://doi.org/10.1016/j.cep.2006.02.005