상하수도학회지 (Journal of Korean Society of Water and Wastewater)

  • 제19권2호
  • /
  • Pages.125-134
  • /
  • 2005
  • /
  • 1225-7672(pISSN)
  • /
  • 2287-822X(eISSN)
대한상하수도학회 (The Korean Society of Water and Wastewater)
권호 표지

폐콘크리트분말을 이용한 불산폐수 처리

Fluoride Wastewater Treatment using Waste Concrete Powder

  • 투고 : 2004.10.13
  • 심사 : 2005.04.06
  • 발행 : 2005.04.15
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Waste concrete powder was used to remove fluoride ions in highly concentrated fluoride wastewater. 92.6% of fluoride in 100 mg F/L wastewater was removed by 1% dose of the cement paste powder that represents characteristics of waste concrete powder, whereas the removal efficiencies of raw cement and lime were 47.3% and 96.4%, respectively. The cement paste powder was competitive to lime, common fluoride removal agent. Various Ca-bearing hydrates such as portlandite, calcium silicate hydrate, and ettringite in cement paste slurry can remove fluoride by precipitating $CaF_2$ and absorbing $F^-$ ions. In the experiments using both cement paste and lime, 50~67% of lime can be substituted by cement paste to satisfy fluoride effluent limitation of 15 mg/L. Since cement paste has higher acid neutralization capacity than lime, it can be recycled to neutralize more acid and to remove more fluoride. Therefore waste concrete powder can be more economical and viable alternative for lime in fluoride wastewater treatment.

키워드

과제정보

연구 과제 주관 기관 : 중소기업청

참고문헌

  1. 이명진, 박세진, 김창균, 윤태일 (2002) Calcium Chloride와 Alum을 이용한 불소 제거, 대한환경공학회지, 24(12), pp. 2151-2161
  2. 쌍용시멘트 (2003) 시멘트 시험 성적
  3. 최상흠 (1992) 시멘트 화학, No. 126, pp. 22
  4. 환경부 (2003) 보도자료, 건설폐기물 재생골재로 거듭난다
  5. 환경부 (2004) 수질환경보전법
  6. 用水廢水便覽編輯委員會編 (1995) 用水廢水便覽(上), 寒微圖書出版, pp. 577-578
  7. Benefield, L. D., Judkins, J. H. and Weand, B. L. (1982) Process Chemistry for Water and Wastewater Treatment, Prentice-Hall International, London, pp. 405-406
  8. Boruff, C. S. (1934) Removal of fluorides from drinking waters, Ind. Eng. Chem., 26(1), p. 69 https://doi.org/10.1021/ie50289a016
  9. Culp, R. L., and Stoltenberg, H. A. (1958) Fluoride reduction at Lacrosse, Kansas, JAWWA, 50(3), pp. 423-431
  10. Lin, C. S. and Huang, S. D. (1994) Removal of Cu (II) from aqueous solution with high ionic strength by adsorbing colloid flotation, Environ. Sci. Technol., 28, pp. 474-478 https://doi.org/10.1021/es00052a020
  11. Huang, C. J. and Liu, J. C. (1999) Precipitate flotation of fluoride containing wastewater from a semiconductor manufacture, Water Res., 33(16), pp. 3403-3412 https://doi.org/10.1016/S0043-1354(99)00065-2
  12. Huang, S. D., Ho, H., Li, Y. M. and Lin, C. S. (1995) Adsorbing colloid flotation of heavy metal ions from aqueous solution at large ionic strength, Environ. Sci. Technol., 29, pp. 1802-1807 https://doi.org/10.1021/es00007a017
  13. Park, J. Y., Kang, W. H. and Hwang, I. (2003) Hexavalent chromium uptake and release in cement pastes, Manuscript submitted to Environmental Engineering Science
  14. Talor, H. F. W. (1990) Cement Chemistry, 2nd Edition, Thomas Telford, pp. 243
  15. Takai, H. (1996) Environmental management in semiconductor manufacturing, in Proc. 5th Int. Symp. Semiconductor Manufacturing, pp. 139-142
  16. Palmer, C. D. (2000) Precipitates in a Cr(VI) - contaminated concrete. Environ. Sci. Technol., 34, pp. 4185-4192 https://doi.org/10.1021/es991089f
  17. Parthasarathy, N., Buffle, J. and Haerde, W. (1986) Combined use of calcium salts and polymeric aluminium hydroxide for defluoridation of wastewaters, Water Res., 20(4), pp. 443-448 https://doi.org/10.1016/0043-1354(86)90191-0
  18. Kondo, R. and Veda, S. (1968) Proc, 5th Int. Sump. Chemistry Cement, 2, pp. 203
  19. Reardon, E. I. and Wang, Y. X. (2000) A limestone reactor for fluoride removal from wastewaters, Environ. Sci. Technol., 34, pp. 3247-3253 https://doi.org/10.1021/es990542k
  20. Wang, S. Y. (1998) Effectiveness and limitation of bioremediation and immobilization in treating chromium and naphthalene waste, APh. D. Dissertation
  21. Zabban, X. and Jewett, H. W. (1967) The treatment of fluorice wastes, Proc., Twenty- Third Purdue Industrial Waste Conference, pp, 706-715