This study examined pollution level of sediment in Sookchun lake, and studied dredging validity by examining phosphorous release characteristics on surface polluted soil. Total phosphorous, the principal cause of algal blooms, exceeded dredging assessment standards regarding Daechung lake (1.5 mg/g) at all points. Also at all points, total nitrogen exceeded the dredging assessment standard regarding Paldang Lake (1.1 mg/g), but fell short of the standard regarding Daechung lake (3.0 mg/g). Dredging zone was suggested in this study is Chuso water body (WS-6∼WS-12) in Sookchun lake. In relation to sediment pollution levels measured at different depths, LOI tended to decrease as it became deeper. The concentrations of T-N varied depending upon the depth as well as points, but no regular pattern was observed. The depth and site did not significantly influence T-P. From the results of phosphorous release tests, it was shown that total phosphorous release flux was calculated to be 7.2∼15.4 mg/m2/d for anaerobic condition, 0.5∼2.0 mg/m2/d for aerobic condition and 2.0∼4.1 mg/m2/d for facultative condition. Release flux and T-P concentration of surface sediments had positive correlation (R2 0.7871). And The corelation between release flux and DO condition in reactor had strong negative correlation (R2 0.8824).

1. 서 론
 2. 조사지역 및 방법
  2.1 표층퇴적물의 오염도
  2.2 퇴적량조사
  2.3 퇴적물에서의 인 용출 특성분석
  2.4 용출률(Benthic release flux) 산정
 3. 결과 및 고찰
  3.1 표층퇴적물의 오염도
  3.2 퇴적심도
  3.3 퇴적물의 입도
  3.4 퇴적심도별 퇴적물의 오염도
  3.5 퇴적물에서 인의 용출특성실험
  3.6 용출률(Benthic release flux) 산정
 4. 결 론
 감사의 글
 References

• 유병로(한밭대학교 건설환경공학과) | Ryu, Byong-Ro