수질정화 번역(한국어 원본)습지의 수질 현황 및 수처리 효율 평가
봄 부터 늦가을까지 표층수온 분포는 5.7～30.3℃의 넓은 범위를 보였으며, 특히, closed water와 open water의 식생 유무에 따라 수온의 차이가 있었다. 습지내 DO 농도는 2.3～20.3㎎/L(포화도 23～258%)의 넓은 범위로, 봄철 10㎎/L 이상의 과포화 농도를 보였으며, 5월에는 중류와 하류부에서 4㎎/L 이하의 낮은 DO 값을 보였다. pH는 7.2~9.3의 범위로 수온이 증가하는 봄 부터 여름철 식물플랑크톤의 대증식 시기에 증가하는 일반적인 경향을 보였다. Chl-a 농도는 4.0～268.9㎍/L의 범위로 4월에 급격히 증가하여 일부 구간에서는 최고 200㎍/L 이상의 값을 보였다.
습지의 수처리 효율은 평균 BOD 12.3%, SS 36.2%, TN 43.1%로 계절에 따라 제거 효율의 차이를 보였으며, 조사시기에 TP의 평균 제거 효율은 -44.5%로 운영초기에 비해 처리 효율이 현저히 감소되었으며, 특히 수온이 상승하는 시기에 뚜렷하게 나타났다. 습지내 식생 분포
2005년 갈대의 면적비율은 설계면적과 비교하여 반월천 고습지에서 18,030㎡ (11.8%), 저습지에서 18,030㎡(14.4%), 동화천 고습지에서 29,383㎡(23.3%), 저습지에서 23,155㎡(27.3%), 그리고 삼화천습지에서 16,606㎡(30.7%)이 감소하였다. 이러한 갈대의 면적비율의 감소는 애기부들의 유입과 갈대 고사 등으로 인한 open water의 증가로 나타났다. |
수질정화 번역(영어 번역본)Water quality of the wetland and evaluation of the efficiency of water treatment
The distribution of sea surface temperature from spring to late fall ranged widely between 5.7℃ and 30.3℃. In particular, water temperature varied depending on the existence of vegetation in the closed water and open water. The DO concentration in the wetland ranged widely between 2.3 and 20.3㎎/L (saturation 23～258%). In springtime the supersaturated concentration was in excess of 10㎎/L, and in May a low DO value was lower than 4mg/L midstream and downstream. pH ranged between 7.2 and 9.3, From spring when the water temperature rises to summer when phytoplanktons greatly multiply, pH tends to increase in general. Chl-a concentration ranged between 4.0 and 268.9㎍/L. It abruptly increased in April, and exceeded 200㎍/L in some sections.
As for the efficiency of water treatment in the wetland, BOD was 12.3% on average, SS 36.2%, and TN 43.1%. Depending on season, there was difference in removal efficiency, and the average TP removal efficiency during the survey period was -44.5%, far lower than in the early stage. It was apparent particularly when the water temperature rose. Distribution of vegetation in the wetland
The percentage of the area of reeds in 2005 was compared to the design area. It was reduced by 18,030㎡ (11.8%) in the high wetland of Banwolcheon, and by 18,030㎡(14.4%) in the low wetland. It was reduced by 29,383㎡(23.3%) in the high wetland of Donghwacheon, and by 23,155㎡(27.3%) in the low wetland. It was reduced by 16,606㎡(30.7%) in the wetland of Samhwacheon. The reduction of the percentage of the area of reeds resulted in the introduction of Typha angustata, and the increase in open water due to the withering of reeds. |
