내린천수계 비점오염원 오염물질 유출량조사 (A Study on Water Quality and Amount of Flowing at Nonpoint Source of Nairin Stream)

서지정보

· 발행기관 : 한국환경보건학회
· 수록지 정보 : 한국환경보건학회지 / 35권 / 3호 / 220 ~ 225페이지
· 저자명 : 허인량, 오흥석, 김영진, 박성빈

초록

This study evaluates the water quality of the river near the alpine farmland in the upper Naerin stream, which is a typical
stream of the upper Bukhan River with muddy water generation, by the flow examination, it aims to estimate the
characteristics of nonpoint sources flowing out from the investigated area and figure out effective methods to reduce
them. According to the result of water quality examination, the average BOD of the area not affected by the cultivated
land among the areas of the upper Naerin River was 0.47㎎/ℓ, and total phosphorous was 0.007 ㎎/ℓ; thus, it maintained
the cleanliness level of Ia. The average BOD of the area with the alpine farmland was 0.52 ㎎/ℓ, which was similar
to the one of the non-cultivated land. But total phosphorous concentration was 0.023 ㎎/ℓ, which was more than
three times higher than the area belonging to level II due to the effect of fertilizer ingredients discharged from the cultivated
land. About the loadings of the investigated area generated from each of the pollution sources, BOD was 878.5
㎏/day and total phosphorous was 79.7㎏/day. Moreover, for the load density, BOD was 2.22 ㎏/day.㎢ and total
phosphorous was shown as 0.20 ㎏/day.㎢ . Regarding the rates generated from nonpoint sources like land among the
loadings per pollution sources, BOD was 54%, total nitrogen was 91%, and total phosphorous was 73.4%. Therefore,
it was shown that most of the nutrients were produced from the nonpoint sources. The level of BOD runoff loading in
the Jaun River area, where nonpoint sources were mainly generated, was 37.1㎏/day and total phosphorous was 1.33
㎏/day. The flow rates to the generated amount were estimated as 10.5% and 4.7% each.

영어초록

This study evaluates the water quality of the river near the alpine farmland in the upper Naerin stream, which is a typical
stream of the upper Bukhan River with muddy water generation, by the flow examination, it aims to estimate the
characteristics of nonpoint sources flowing out from the investigated area and figure out effective methods to reduce
them. According to the result of water quality examination, the average BOD of the area not affected by the cultivated
land among the areas of the upper Naerin River was 0.47㎎/ℓ, and total phosphorous was 0.007 ㎎/ℓ; thus, it maintained
the cleanliness level of Ia. The average BOD of the area with the alpine farmland was 0.52 ㎎/ℓ, which was similar
to the one of the non-cultivated land. But total phosphorous concentration was 0.023 ㎎/ℓ, which was more than
three times higher than the area belonging to level II due to the effect of fertilizer ingredients discharged from the cultivated
land. About the loadings of the investigated area generated from each of the pollution sources, BOD was 878.5
㎏/day and total phosphorous was 79.7㎏/day. Moreover, for the load density, BOD was 2.22 ㎏/day.㎢ and total
phosphorous was shown as 0.20 ㎏/day.㎢ . Regarding the rates generated from nonpoint sources like land among the
loadings per pollution sources, BOD was 54%, total nitrogen was 91%, and total phosphorous was 73.4%. Therefore,
it was shown that most of the nutrients were produced from the nonpoint sources. The level of BOD runoff loading in
the Jaun River area, where nonpoint sources were mainly generated, was 37.1㎏/day and total phosphorous was 1.33
㎏/day. The flow rates to the generated amount were estimated as 10.5% and 4.7% each.

참고자료

· 없음