Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
권호 표지
DOI QR코드

DOI QR Code

The Effect of the Use of Sodium Hypochlorite and Iron Salts on Sewage Sludge Dewaterability

차아염소산과 철염을 이용한 하수슬러지의 탈수효과

  • Sung, Il-Wha (Department of Sanitary & Environmental System Engineering, Gachon University of Medicine and Science)
  • 성일화 (가천의과학대학교 보건환경시스템학과)
  • Published : 2009.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

This study investigated improvement to sludge dewaterability and coagulation for sewage treatment plant sludge by using sodium hypochlorite solution (NaOCl), ferric sulfate [$Fe_2(SO_4)_3$] and zeolite. The specific resistance to filtration(SRF), chloride, pH and turbidity were used to evaluate the sludge dewatering behaviors. The results of study were as follows: By varying the amount of NaOCl added the optimum result in terms of enhancement for pretreatment occurred when 34 mg/l of NaOCl was injected. When the total solids concentration of the sludge was 10,000 mg/l, the optimum ferric sulfate dosage for the sludge dewaterability was 150 mg/l and the corresponding SRF was $1.7{\times}10^7sec^2/g$. It was observed that injecting zeolite into sludge was effective in improving the dewaterability of sludge.

Keywords

References

  1. Sung, I. W. : Treatment efficiency of complex waste-water by Fenton's oxidation condition. Journal of Environmental Health Sciences, 32(5), 446-450, 2006
  2. Na, S. M., Park, J. H., Kim, Y. U. and Kim, J. H. : Enhanced dewaterability and physico-chemical characteristics of digested sewage sludge by ultrasonic treatment. Journal of Korea Society of Waste Management, 22(7), 637-644, 2005
  3. Son, D. H. : Development of processes for treatment of nitrogenous wastewaters by biological regeneration of zeolite, Ph.D. Dissertation, Graduate School, University of Seoul, 2002
  4. Lee, C. G., Hwang, E. J., Kang, S. J., Bin, J. I. and Lee, B. H. : Reduction and stabilization of sewage sludge by ozonation. Journal of Korean Society on Water Quality, 20(3), 290-295, 2004
  5. Hwang, S. Y., Shon, J. R. and Lee, Y. S. : The effect of ozone of the improvement of dehydration in treatment of sewage sludge measuring SRF. Korean Journal of Environmental Health Society, 19(4), 44-50, 1993
  6. Lee, J. E. : A study on thermal dewatering for improving the dewaterability of the municipal wastewater sludge. Journal of Korean Society of Environmental Engineers, 26(5), 601-609, 2004
  7. Chang, G. R., Liu, J. C. and Lee, D. J. : Co-conditioning and dewatering of chemical sludge and wasteactivated sludge. Water Research, 35(3), 786-794, 2001 https://doi.org/10.1016/S0043-1354(00)00326-2
  8. Nam, Y. W. and Park, T. U. : The characteristics of VFAs formation from dewatered sewage sludge by hydrogen peroxide. Journal of Korean Society of Environmental Engineers, 26(6), 649-656, 2004
  9. Kwon, J. H., Park, J. H. and Kwon, D. Y. : The improvement of sewage sludge dewaterability using $H_{2}O_{2}$ and Iron saits, 2003 Academic Conference Journal of Korean Society on Water quality, pp. B55-B58, 2003
  10. Ministry of Environment, Standard methods for water quality, 2007
  11. Cho, Y. M. : Dewatering of digested sludge using briquette ash as a filter aid, Graduate School, Seoul City University, 1984
  12. Li, X. M., Guo, L., Yang, Q., Zeng, G. M. and Liao, D. X. : Removal of carbon and nutrients from low strength domestic wastewater by expanded granular sludge bed-zeolite bed fiitration(EGSB-ZBF)integrated treatment concept, Process Biochemistry, 42, pp.1173-1179, 2007 https://doi.org/10.1016/j.procbio.2007.04.001
  13. APHA, A WW A and WEF : Standard methods for the examination of water and wastewater, 21st, 2005
  14. Oh, c., Kim, Y. U. and Kim, B. I. : Enhanced waterability of sewage sludge by ultrasonic treatment. Journal of Korea Society of Waste Management 19(3), 927- 932, 2002
  15. Lee, B. H., Bang, M. H. and Kim, G. H. : Volume reduction of waste water sludge using electrolysis. Journal of Korean Society on Water Quality, 22(2), 264-270, 2006

Cited by

  1. Improvement of Sewage Sludge Dewaterability using BIO-CLOD vol.41, pp.5, 2015, https://doi.org/10.5668/JEHS.2015.41.5.327
  2. Conditioning and Dewatering Properties of Digested and Thickened Sludge with Inorganic Conditioner vol.37, pp.6, 2011, https://doi.org/10.5668/JEHS.2011.37.6.467