동진강 정읍천의 유역오염부하량 평가
Assessment of Pollutant Loads for Water Enhancement in the Jeongeupcheon of Dongjin River
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초록
하천 수질관리 대안을 제시하고자 동진강에 영향을 가장 크게 미치는 정읍천을 대상으로 2002년 1월부터 2003년 12월까지 점 및 비점 오염원으로부터 수질오염물질의 부하량, 유출경로 등을 평가하였다. 계절별 수질 변화는 pH 범위가 6.87～7.53으로 봄의 pH 범위가 컸으며, EC 농도는 정읍천 중류가 높았으며, 상류유역은 83～95 ㎲/cm 범위를 나타냈고, 계절별로 가을에 517 ㎲/cm로 가장 높았다. BOD의 농도는 상류유역에서 0.61～1.27 mg/L로 Ⅰ급수 수질을 나타내었으나, 중류와 하류에서는 Ⅲ등급 수준이었다. T-N의 농도는 정읍천 중류 유역이 6.10～10.84 mg/L로 가장 높았고, T-P의 농도는 타 오염물질에 비해 농도의 편차가 컸으며, 특히 중류에서 T-P의 농도가 0.41～0.98 mg/L로 높았다. BOD의 배출부하량은 J4 유역에서 553 kg/day로 가장 많았고 T-N 발생부하량은 가축, 인구, 토지이용, 산업의 순으로 컸으며, T-N 배출부하량은 인구 및 산업에 의한 것은 J4 유역, 가축과 토지이용에 의한 부하량은 J5, J6유역에서 높았다. T-N의 유달부하량은 하류 유역에서 높았으며, T-P의 유달부하량은 BOD, T-N에 비하여 유달부하량이 낮았고 유달율은 6～38% 범위를 나타냈다.
Abstract
The influence of pollutant loads on the water quality in Jeongeupcheon of Dongjin river was evaluated from Jan. 2002 to Dec. 2003 for two years. The range of pH in water was 6.87～7.53. The EC level in upstream ranged from 83 to 95 ㎲/cm with the highest value in autumn. The BOD level in upstream rang- ed from 0.61 to 1.27 mg/L, which would beⅠgrade according to water quality criteria by Ministry of Enviro- nment, but that in downstream was Ⅲ grade. The average T-N level in midstream ranged from 6.10 to 10.84 mg/L which was the highest values throughout the stretch of the river. The average T-P levels ranged from 0.41 to 0.98 mg/L. Jeongeupcheon was suitable for the agricultural usage based upon one year analysis of river water quality. The effluent loads of BOD was high in midstream (J4) with 553 kg/day. The major sources of T-N loads were livestock, population, land use, and industry in order. The effluent loads of T-N was high in J4 by population and industry while that of T-N was high in J5 and J6 by livestock and land use. The delivered loads of T-N was high in downstream. The delivered loads of T-P was low as compared with those of BOD and T-N. The delivery ratio of T-N ranged from 6 to 38%.
참고문헌 (10)
- Novotny, "identification and management of diffuse pollu- tion" (1994)
- Jain C. K, "Assessment of point and non-point sources of pollution using a chemical mass balance approach", 43(3), pp.379~390 (1998)
- Lee K. B, "Change in agricultural irrigation water quality in Mank- yeong river", 18(1), pp.6~10 (1999)
- Lee K. B, "Assessment of water purifi- cation plant vegetation for enhancement of natural pur- ification in Mankyeong river", 22(2), pp.153~165 (2003)
- Lee K. B, "Species diversity of riparian vegetation by soil chemical properties and water quality in the upper stream of in Mankyeong river", 22(2), pp.100~110 (2003)
- Ministry of Environment, "The standard method of water analysis." (2000), Ministry of Environment
- Ministry of Environment, "Guideline of total pollu- tant to stream management." (1999), Ministry of Environment
- FAO, "Water quality for agriculture", pp.174~ (1977)
- Mattikalli. N. M, "Estimation of surface water quality change in response to land use change", 48, pp.263~282 (1996)
- Srinivasan, "A spatial decision support system for assessing agriculture nonpoint source pollution", 30(3), pp.441~452 (1994)