Journal of Wetlands Research (한국습지학회지)

Korean Wetlands Society (한국습지학회)
권호 표지
DOI QR코드

DOI QR Code

Evaluation of Combined Vertical and Horizontal Flow Sand-Filled Reed Constructed Wetland with Intermittent Feeding for Sewage Treatment

간헐 주입 2단(수직 및 수평 흐름) 모래 갈대 인공습지에 의한 생활하수 처리

  • Seo, Jeoung-Yoon (Dept. of Environmental Engineering, Changwon National University)
  • 서정윤 (창원대학교 환경공학과)
  • Received : 2014.01.07
  • Accepted : 2014.03.14
  • Published : 2014.05.31
Download PDF
⟨ Previous Next ⟩

Abstract

A sewage was treated using serially combined vertical(VFCW)and horizontal flow sand-filled reed constructed wetland(HFCW) with intermittent feeding. The sand had 1~3 mm diameter. The sewage entering the sewage treatment plant of Gyeonsang National University was fed into the reed constructed wetland bed for 10 minutes every 6 hours at the hydraulic load of $314L/m^2{\cdot}day$ based on the surface ares of the VFCW. In the VFCW effluent pH values were lower than those of the influent, whereas they were higher than those of the influent in the HFCW. DO values were increased in VFCW, but they were decreased in the HFCW. The OTR was $58.72gO_2/m^2{\cdot}day$ in the VFCW and $7.72gO_2/m^2{\cdot}day$ in the HFCW. Average removal efficiencies were SS 94.80%, BOD 90.77%, $COD_{Cr}$ 85.87%, $COD_{Mn}$ 87.72%, T-N 64.74%, $NH_4{^+}$-N 86.44%, T-P 87.70%. Nearly, half of T-N in the effluent was $NO_3{^-}$-N but the concentration of $NO_2{^-}$-N in the effluent was less than 0.64 mg/L.

본 연구의 목적은 직렬연결 2단 수직 및 수평 모래 갈대 인공습지에 생활하수를 간헐적으로 주입하였을 때 각 수질항목별 처리효율을 평가하는 것이다. 하수는 수리학적 부하량 $314L/m^2{\cdot}day$(수직 흐름 인공습지 기준)를 하루 4(10분 동안 주입후 5시간 50분 동안 중단)회 균등하게 간헐적으로 주입하였다. 평가 결과 pH는 유입수(7.27)보다 수직 흐름 인공습지 유출수(5.81)에서 감소하였다가 수평 흐름 인공습지 유출수(6.40)에서 다시 증가하였다. DO의 농도는 유입수에 비하여 유출수에서 높았으며 겨울로 갈수록 증가하였다. 수직 흐름 인공습지의 산소 전달율 (oxygen transfer rate: OTR)은 $58.72gO_2/m^2{\cdot}day$ 그리고 수평 흐름 인공습지의 OTR은 $7.72gO_2/m^2{\cdot}day$이었다. 각 항목별 평균 처리효율은 SS 94.80%, BOD 90.77%, $COD_{Cr}$ 85.87%, $COD_{Mn}$ 87.72%, T-N 64.74%, $NH_4{^+}$-N 86.44%, T-P 87.70%이었다. 유출수중 T-N의 반 정도는 $NO_3{^-}$-N(7.21 mg/L)이었으며 $NO_2{^-}$-N은 평균 0.64 mg/L이었다.

Keywords

References

  1. APHA, AWWA and WPCF (1989). Standard Methods for the Examination of Water and Wastewater, 18th ed., American Public Health Association, DC.
  2. Babatunde, AO, Zhao, YO, O'Neil, M and O'Sullivan, B (2008). Constructed wetlands for environmrntal pollution control: A review of developments, research and practice in Ireland, Environmental International, 34(1), pp. 116-126. https://doi.org/10.1016/j.envint.2007.06.013
  3. Bahlo, K (1997). Reinigungsleistung und Bemessung von Vertkal Durchstroemten Bodenfiltern mit Abwasserrezirkulation, Ph.D. Dissertation, Fachbereich Bauingenieurund Vermessungswesen der Universitaet Hannover, Hannover, Germany.
  4. Brix, H and Arias, CA (2005). The use of vertical flow constructed wetlands for on-site treatment of domestic wastewater: New Danish guidelines, Ecological Engineering, 25, pp. 491-500. https://doi.org/10.1016/j.ecoleng.2005.07.009
  5. Chung, DY (2002). Development of an environmentally friendly sewage treatment model with water plant and sand for small communities (Final report), Korean Ministry of Environment. [Korean Literature]
  6. Clark, T, Stephenson, T and Pearce, PA (1997). Phosphorus removal by chemical precipitation in a biological aerated filter, Water Research, 31(10), pp. 2257-2563.
  7. Cooper, P (1999). A review of the design and performance of vertical-flow and hybrid reed bed treatment systems, Water Science Technology, 40(3), pp. 1-9.
  8. Dongwha Technology (1999). Korea Standard Methods for the Examination of Waste and Wastewater. [Korean Literature]
  9. Drizo, A, Frost, CA, Grace, J and Smith, KA (1999). Physico-Chemical screening of phosphate-removing substrates for use in constructed wetland systems, Water Research, 33(17), pp. 3595-3602. https://doi.org/10.1016/S0043-1354(99)00082-2
  10. Fehr, G and Schette, H (1990). Leistungsfaehigkeit intermittirend beschickter, bepflanzter Bodenfilter, In: Institut fuer Wasserversorgung, Abwasserbeseitigung und Raumplanung der Technischen Hochschule Darmastadt, 21 Wassertechnische Seminar, Pflanzenklaeranlagen - Besser Als Ihr Ruf?, pp. 197-225.
  11. Gesellschaft zur Foederung der Abwassertechnik e. V. (1989). ATV-Regelwerk Abwassrer-Abfall, Behandlung von Haeuslichem Abwasser in Pflanzenbeeten, ATV-Hinweisblatt H 262.
  12. Kim, HJ (1997). Small scale wastewater treatment in rural areas using natural systems, Ph.D. Dissertation, Kon-Kuk University, Seoul, Korea. [Korean Literature]
  13. Kraft, H (1987). Pflanzenklaernlagen aus Oekologischer Sicht, ATV-Fortbildungskurs E/5, 18-20. 3. 1987 in Fulda, Abwsserbeseitung in Laendlichem Raum, Fulda, Germany.
  14. Lie, L, Zhao, X, Zhao, N, Shen, Z, Wang, M, Gue, Y and Xu, Y (2013). Effect of aeration modes and influent COD/N ratios on the nitrogen removal performance of vertical flow constructed wetland, Ecological Engineering, 57, pp. 10-16. https://doi.org/10.1016/j.ecoleng.2013.04.019
  15. Li, HB, Li, YH, Gong, ZQ and Li, XD (2013). Performance study of vertical flow constructed wetlands for phosphorus removal with water quenched slag as a substrate, Ecological Engineering, 53, pp. 39-45. https://doi.org/10.1016/j.ecoleng.2013.01.011
  16. Merlin, G, Pajean, J-L and Lissolo, T (2002). Performance of constructed wetlands for municipal wastewater treatment in rural mountainous area, Hydrobilogia, 469(1-3), pp. 87-98. https://doi.org/10.1023/A:1015567325463
  17. Park, HU (2009). Trends on decentralized sewage and wastewater treatment using constructed wetlands at home and abroad (2009). http:/blog.naver.com/sihwawetland/20066156421.
  18. Pedescoll, A, Corzo, A, Álvarez, E, Puigagut, J and Garcia, J (2011). Contaminant removal efficiency depending on primary treatment and operational strategy in horizontal subsurface flow treatment wetlands, Ecological Engineering, 37, pp. 372-380. https://doi.org/10.1016/j.ecoleng.2010.12.011
  19. Platzer, C (1997). Entwicklung eines Bemessungsansatzes zur Stick-stoffelimination in Pflanzenklaeranlagen, Berichte zur Siedlungswasserwirtschaft Nr. 6, Ph.D. Dissertation, Technical University Berlin, Germany.
  20. Platzer, C (1999). Design recommendation for subsurface flow constructed wetlands for nitrification and denitrification, Water Science and Technology, 40(3), pp. 257-263.
  21. Sasikala, S, Tanaka, N, Jinadasa, KBSN and Mowjood, MIM (2010). Comparison study of pulsing and continuous flow for improving effluent water quality and plant growth of a constructed wetland to treat domestic wastewater, Tropical Agricultural Research, 21(2), pp. 147-156. https://doi.org/10.4038/tar.v21i2.2596
  22. Seo, J -Y (2002). Treatment of artificial sewage using zeolite column, Korean J. of Environmental Agriculture. 21(3), pp. 178-188. [Korean Literature] https://doi.org/10.5338/KJEA.2002.21.3.178
  23. Wissing, F (1995). Wasserreinigung mit Pflanzen, E. U. Verlag Eugen Ulmer, Gremany.
  24. Xie, SG, Zhang, XJ, Wang, ZS (2003). Temperature effect on aerobic denitrification and nitrification, J. of Environmental Sciences, 15(5), pp. 669-673.
  25. Yoo, SU (1997). Advanced treatment technology of wastewater, Process development for simultaneous removal of nitrogen and phosphorous using natural zeolite, Institute of Construction Part of Samsung C&T Corporation, Korean Ministry of Environment. [Korean Literature]