대한환경공학회지 (Journal of Korean Society of Environmental Engineers)

  • 제36권2호
  • /
  • Pages.96-102
  • /
  • 2014
  • /
  • 1225-5025(pISSN)
  • /
  • 2383-7810(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
권호 표지
DOI QR코드

DOI QR Code

PAC를 이용한 하수의 고도처리공정에서의 인 제거

Phosphorus Removal from Advanced Wastewater Treatment Process Using PAC

  • 투고 : 2012.12.12
  • 심사 : 2014.01.20
  • 발행 : 2014.02.28
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

강화된 수질기준 이하로 인을 제거하기 위해, 혐기조, 무산소조와 Bio-clod와 다공성 폴리우레탄 여재가 충진된 접촉 산화조로 구성된 생물학적 고도처리 공정을 대상으로 PAC (Poly aluminium chloride, 10.4% as $Al_2O_3$)적용 시 인제거의 효율을 검토하였다. 접촉산화조 유출수를 대상으로 Jar-test를 실시하여 최적 PAC 주입농도를 15 mg/L로 선정 후, 2차 침전조 전단에 PAC를 주입하여 응집 침전 후 상등수를 분석하였다. PAC 주입 후 BOD와 COD의 제거율의 경우 각각 96.1%와 88.8%로, 주입 전의 95.4%와 72.4%로 효과가 크지 않았으나, TP의 제거율은 97%로 주입 전의 71.6%에 비해 18.4% 향상됨을 알 수 있었다. 특히 SP 제거율은 응집제 주입 전 59.5%에서 주입 후 98.6%로 분석되어, PAC의 적용으로 SP 제거가 가능함을 알 수 있었다. 실험기간 동안의 유출수의 TP농도는 0.13 mg/L 이하로, 추가적인 총인처리시설 설치 없이도 수질기준 준수가 가능하였다.

To meet the reinforced discharge standards, effect of coagulant PAC (Poly aluminium chloride, 10.4% as $Al_2O_3$) on phosphorous removal in advanced wastewater treatment process (a modified $A^2$/O). 15 mg/L of PAC determined by jar-test was added to influent of settling basin in a modified $A^2$/O consists of anaerobic, anoxic, and oxic chamber which contains Bio-clod and porous polyurethane media. Performance of PAC was tested by supernatant after settling. The removal efficiencies of BOD, COD, TP (total phosphorus) and SP (soluble phosphorus) on biological process with PAC were 96.1%, 88.8%, 97.0% and 98.6%, compared with those on biological process without PAC were 95.4%, 72.4%, 71.6% and 59.5% respectively. 18.4% of TP and 39.1% of SP removal efficiency was increased, although increase of BOD and COD removal rate was not significant. Only PAC addition to influent of settling basin in $A^2O$ process can help total phosphorus removal to 0.13 mg/L with following discharge standard.

키워드

참고문헌

  1. Ministry of Environment, http://www.me.go.kr(2011).
  2. Ministry of Environment, 2010 Environmental Statistics Yearbook(2011).
  3. Park, H. Y., Park, S. M., Lee, K. C., Yu, S. J., Kwon, O. S. and Kim, S. J., "Survey of physicochemical methods and economic analysis of domestic wastewater treatment plant for advanced treatment of phosphorus removal," J. Kor. Soc. Environ. Eng., 33(3), 212-221(2011). https://doi.org/10.4491/KSEE.2011.33.3.212
  4. Mesdaghinia, A. R., Rabbani, D., Nasseri, S. and Vaezi, F., "Effect of Coagulants on Electrochemical Process for Phosphorus Removal from Activated Sludge Effluent," Iranian J. Pub. Health, 32(4), 45-51(2003).
  5. Xie, W., Wang, Q., Ma, H., Ohsumi, Y. and Ogawa, H. I., "Study on phosphorus removal using a coagulation system," Proc. Biochem., 40, 2623-2627(2005). https://doi.org/10.1016/j.procbio.2004.06.056
  6. Kim, K. S., Seo, G. T., Lee, K. H. and Kim, N. J., "Comparison of biological phosphorus removal characteristics between A/O and $A^2/O$ process," J. Kor. Soc. Water Qual., 18(2), 123-130(2002).
  7. Hwang, E. J. and Cheon, H. C., "High-rate phosphorus removal by PAC (poly aluminum chloride) coagulation of $A_2O$ effluent," J. Kor. Soc. Environ. Eng., 31(8), 673-678(2009).
  8. Ministry of Environment, Guide book on phosphorus treatment facility, Jan.(2011).
  9. Park, I. G., Lee, K. Y., Eom, T. Y. and Lim, K. H., "A comparative study of phosphorus removal condition by PAC coagulation of membrane effluent," J. Kor. Soc. Urban Environ., 12(2), 123-127(2012).
  10. Ministry of Environment. A study of phosphorus removal efficiency in phosphorus treatment facility, Sep.(2012).
  11. The Korean Association of Biological Sciences, Iwanami's Dictionary of Biology, 2nd. ed., Academy, Seoul, p. 123(2001).
  12. APHA, AWWA and WEF, Standard methods for the examination of water and wastewater, 21st ed., AHPA Pub., Washington DC, pp. 5.2-18(2005).
  13. Choi, S. H., Cho, N. U. and Han, M. S., "The removal of nitrogen and phosphorus by alum addition in activated sludge reactor coupled with submerged hollow fiber microfiltration," J. Kor. Soc. Environ. Eng., 26(2), 160-167(2004).
  14. Park, J. B., "Effect of coagulant addition on nutrient removal efficiency in a submerged membrane bioreactor," J. Kor. Soc. Water Qual., 27(2), 235-241(2011).
  15. Han, S. W. and Kang, L. S., "Removal mechanism of phosphorus in wastewater effluent using coagulation process," J. Kor. Soc. Environ. Eng., 32(8), 774-779(2010).

피인용 문헌

  1. Introduction of the Basin Sewerage Plan in Japan through Case Studies of the Lake Biwa Sewerage System vol.37, pp.9, 2015, https://doi.org/10.4491/KSEE.2015.37.9.533
  2. Electricity Generation from Swine Wastewater in Mediatorless Single-Chamber Microbial Fuel Cells vol.37, pp.7, 2016, https://doi.org/10.1002/bkcs.10821
  3. Simultaneous Removal of Organic Pollutants, Nitrogen, and Phosphorus from Livestock Wastewater by Microbubble-Oxygen in a Single Reactor vol.39, pp.11, 2017, https://doi.org/10.4491/KSEE.2017.39.11.599
  4. Improvement of dewaterability and settleability of sewage sludge using coagulation sludge vol.32, pp.2, 2018, https://doi.org/10.11001/jksww.2018.32.2.089
  5. Coagulation-membrane separation hybrid treatment of secondary treated effluent for high efficiency phosphorus removal vol.32, pp.1, 2018, https://doi.org/10.11001/jksww.2018.32.1.047