부유습지를 이용한 부영양수계 현장 수질개선 효과 (The Effect of Floating Wetland on Water Quality Improvement in a Eutrophic Lake.)

서지정보

· 발행기관 : 한국수생태학회
· 수록지 정보 : 생태와 환경 / 46권 / 1호 / 116 ~ 127페이지
· 저자명 : 박채홍, 박명환, 최동호, 최형주, 이준헌, 이명훈, 황순진

초록

At weekly intervals, we monitored continuous changes in water quality by constructed floating wetland equipped with the four different filter media (sponge, volcanic stone, activated carbon and magnesium hydroxide) in a eutrophic lake from March 2011 to May 2012. We also investigated phyto- and zooplankton communities both in the influent and the effluent water through the floating wetland. Over a 10-month time period, average turbidity (66%), suspended solids (79%) and chlorophyll-a (80%)concentrations were remarkably reduced in the effluent water compared to the influent (P⁄0.001). The average removal rates of NO2-N and NH3-N were 24% and 20%, respectively (P⁄0.05). The average removal rates of NO3-N and TN were less than 10% (P¤0.05). On the other hand, the average removal rates of PO4-P and TP were more than 65% (P⁄0.01). Interestingly, the abundance of phytoplankton in the effluent was decreased about 2.6 times compared to that of the influent, whereas the abundance of zooplankton in the effluent was increased about 3.5 times compared to that of the influent. Overall, particulate matters (SS, Chl-a and TP) and dissolved nutrients (NO2-N, NH3-N and PO4-P) were particularly reduced at high rates. Therefore,application of our constructed floating wetland in a eutrophic lake improved the water quality and demonstrated a potential for algal bloom mitigation.

영어초록

At weekly intervals, we monitored continuous changes in water quality by constructed floating wetland equipped with the four different filter media (sponge, volcanic stone, activated carbon and magnesium hydroxide) in a eutrophic lake from March 2011 to May 2012. We also investigated phyto- and zooplankton communities both in the influent and the effluent water through the floating wetland. Over a 10-month time period, average turbidity (66%), suspended solids (79%) and chlorophyll-a (80%)concentrations were remarkably reduced in the effluent water compared to the influent (P⁄0.001). The average removal rates of NO2-N and NH3-N were 24% and 20%, respectively (P⁄0.05). The average removal rates of NO3-N and TN were less than 10% (P¤0.05). On the other hand, the average removal rates of PO4-P and TP were more than 65% (P⁄0.01). Interestingly, the abundance of phytoplankton in the effluent was decreased about 2.6 times compared to that of the influent, whereas the abundance of zooplankton in the effluent was increased about 3.5 times compared to that of the influent. Overall, particulate matters (SS, Chl-a and TP) and dissolved nutrients (NO2-N, NH3-N and PO4-P) were particularly reduced at high rates. Therefore,application of our constructed floating wetland in a eutrophic lake improved the water quality and demonstrated a potential for algal bloom mitigation.

참고자료

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