Journal of Korean Society of Disaster and Security (한국방재안전학회논문집)

Korean Society of Disaster & Security (한국방재안전학회)
권호 표지
DOI QR코드

DOI QR Code

The Study on the Non-Point Pollutants Reduction Using Friendly Bank Protection Anaerobic/Aerobic Contact Filtration Zone

혐기/호기 접촉여과대를 이용한 자연형 하천호안공법의 비점오염 저감 특성 연구

  • Chang, HyungJoon (School of Civil Engineering, Chungbuk National University) ;
  • Kim, SungDuk (School of Civil Engineering, Chungbuk National University)
  • Received : 2019.03.04
  • Accepted : 2019.03.25
  • Published : 2019.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

It is an urgent issue to manage and reduce non-point pollution sources for improving the water quality of stream and lakes in rural areas. In this study, in order to reduce non-point pollution sources in rural area, Gabion mattresses was proposed to provide protection of riverbanks with anaerobic and aerobic area. The utilization of this was assessed by lab scale model test and pilot plant test. After filling the inside of the gabion mattresses with aggregate, the filtration zone under anaerobic and aerobic conditions was formed to treat the contaminants. In addition, vegetation was deposited on the surfae of the gabion to prevent the inflow of soil and to promote purification by the plant. COD and nitrogen content (T-N, $NH_4{^+}$, -N, $NO_3{^-}N$) were monitored in model and field tests. The lab scale model test showed removal efficiency of 17% of TCOD, 35% of SCOD, 14% of TN, 62% of $NH_4{^+}$, -N, and 33% of $NO_3{^-}$ N. Also, pilot plant test showed removal efficiency of 24% of TCOD, 29% of SCOD, 47% of TN, 50% of $NH_4{^+}-N$, 33% of $NO_3{^-}$, N and 29% of TP.

농촌지역 하천이나 호소수 수질 개선을 위한 비점오염원의 관리 및 저감은 시급한 현안이다. 본 연구에서는 농촌지역의 비점오염 저감을 위하여, 개비온 매트리스호안공에 혐기/호기의 구역을 적용한 자연형 비점오염처리 하천호안을 제안하고, 이의 축소모형 실험(1/6 축적) 및 현장 적용(가로2.0 m 세로 3.0 m 높이 0.4 m의 3단 격벽의 호안)을 통하여 활용성을 평가하였다. 개비온 매트리스 내부에 골재를 채운후 차수 격벽을 설치하고, 호안 법면의 자연 경사를 활용하여 혐기/호기 조건의 여과대를 조성하여 오염물질을 다단으로 처리하였다. 또한 호안공의 표면에 식생을 활착시켜, 토사의 표면 유입을 차단하고, 추가적으로 식생에 의한 정화 기능을 도모하였다. 본 호안공의 축소모형 및 현장 적용에서의 화학적산소요구량(COD) 및 질소성분(T-N, $NH_4{^+}-N$, $NO_3{^-}-N$)의 모니터링 결과, Lab Scale에서는 TCOD 17%, SCOD 35%, TN 14%, $NH_4{^+}-N$ 62%, $NO_3{^-}-N$ 33%의 제거효율을 나타내었고, pilot plant 시운전에서는 TCOD 24%, SCOD 29%, TN 47%, $NH_4{^+}-N$ 50%, $NO_3{^-}-N$ 33%의 제거효율을 나타내었으며, pilot plant 시운전에서는 29%의 TP 제거효율도 달성하였다.

Keywords

HKBJBA_2019_v12n1_23_f0001.png 이미지

Fig. 1. Diagrom of Gabion contact filtration zone

HKBJBA_2019_v12n1_23_f0002.png 이미지

Fig. 2. Model of vegetable contact filter for treatment of non-point pollution source

HKBJBA_2019_v12n1_23_f0003.png 이미지

Fig. 3. Pilot plant of vegetable contact filter for treatment of non-point pollution source

HKBJBA_2019_v12n1_23_f0004.png 이미지

Fig. 4. Pollutant removal performace in pilot plant test

HKBJBA_2019_v12n1_23_f0005.png 이미지

Fig. 5. Pollutant removal performace in pilot plant test

Table 1. Biological Reponses by Microorganisms in Natural Posure Method (Metcalf and Eddy, 2004)

HKBJBA_2019_v12n1_23_t0001.png 이미지

Table 2. Specification of contact filtration zone

HKBJBA_2019_v12n1_23_t0002.png 이미지

Table 3. Operation condition of model and field test

HKBJBA_2019_v12n1_23_t0003.png 이미지

Table 4. Characteristics of dischare water in small-scale sewage treatment facilities

HKBJBA_2019_v12n1_23_t0004.png 이미지

Table 5. Properties of treated water in pilot plant

HKBJBA_2019_v12n1_23_t0005.png 이미지

Table 6. Properties of treated water in pilot plant

HKBJBA_2019_v12n1_23_t0006.png 이미지

Table 7. Comparison of application efficiency between lab scale model and pilot plant of river bank protection

HKBJBA_2019_v12n1_23_t0007.png 이미지

References

  1. Choi, M. K. (2009). Analysis of Non-point Pollution Sourec Using SWAT Model in a Nakdon. Master Thesis, Kyungpook National University.
  2. Jeong, K. W. (2010). Introduction of the Study for Development of Agricultural Non Point Source Pollution Reduction Measrments of the Saemangum Lake Watershed. Magazine of Korean Naitonal Committee on Irrigation and Drainage 46: 53-56.
  3. Jung, Y. J., Nam, K.H., and Min, K.S. (2004). Generation and Dischage Characteristics of Non-point Pollutants from Farmlands of Small Watershed for Nak-dong River. Journal of Korean Society on Water and Environment. 20(4) : 333-338.
  4. Kim, J. H., Han, K. H., and Lee, J. S. (2008). Characteristics of Agriculural Non-point Source Pollutants by Rainfall Events in Rural Watersheds. Journal of Korean Society on Water Environment. 24(1) : 69-77.
  5. Kim, S. M. and Park, T. Y. (2011). Development of Non-point Pollution Load Reduction and Optimal Management Techniques in the Field. Magazine of Korean Naitonal Committee on Irrigation and Drainage 48: 29-34.
  6. Lee, H. J. (2010). A Study on the Runoff Characteristics of Non-Point Source Pollution with Resources of Livestock Compost - A case of Cow Manure-. Ph. D. Dissertation. Hanseo University.
  7. Metcalf & Eddy Inc. 2004. Wastewater Engineering : Treatment and Reuse. McGraw-Hill.
  8. Park, S. C., Oh, C. R., Jin, Y. H., and Kim, D. S. (2005). Study on Runoff Characteristics on Non-point Source in Rural Area of Seomjin Watershed. Journal of the Korean Environmental Sciences Society. 14(1) : 1057-1062.
  9. Park, T. Y., Kim, S. J., Jang, J. R., Choi, K. W., and Kim, S. M. (2011). A Plot Scale Experiment to Assess the NPS Reduction of Sediment Trap for Non-irrigated Cropland. Journal of Agriculture & Life Sciences. 45(5) : 97-103
  10. Roh, S. D. (2008). Development of Stormwater Filtration Systems for Treating Nonpoint Source Pollutants in Urban Areas. Ph. D. Dissertation. Suwon Univerity.
  11. Ryu, K. H. Lee, G. J., Seong, J. U., Kim, D. S., and Park, J. C. (2011). Runoff- Characteristics of Non-point Pollutant Sources in an Agricultural Area Watershed. Korean Journal of Limnology. 44(2) : 178-186.
  12. Shim, S. Y. (1998). Discharge of Nitrogen and Phoshporus from Non-point Sources of Fertilizer and Animal Feed in Korea. Master Thesis. Kangwon National Univerisity.
  13. Song, Y. W. and Lee, S. K. (2012). An Experimental Evaluation of Clay Minerals to Remove Non-point Sources of Contaminants in the Urban Runoff. International Journal of Highway Engineering 14(1) : 55-61. https://doi.org/10.7855/IJHE.2012.14.1.055

Cited by

  1. 모델링기법을 이용한 A2O 하수처리공정에서 주요 공정관리에 관한 연구 vol.13, pp.2, 2019, https://doi.org/10.21729/ksds.2020.13.2.65