| Title |
Effect of Aeratinn on Water Quality in Lakes |
| Authors |
최돈혁 ; 강호 ( Don Hyeok Choi ; Ho Kang ) |
| Abstract |
15 Aerators were constructed in Kwangdong Dam and Dalbang Dam to solve the ordor problem caused by algae and heavy metals, such as Fe and Mn. There for this study was carried out to investigate the effect of aeration on the water quality, species of plankton and the major environmental factors for algal growth. The results showed that the thermal stratification was destroyed and pH was decreased by the successful operation of aerators for one month in both lakes. COD and Chl-a were increased by applying aeration in Kwangdong Dam, a shallow lake while these were decreased in Dalbang Dam, a deep lake. For the case of dominant species of phytoplankton, Chlorophyta was replaced to Bacillariophyceae in Kwangdong Dam and Cyanophyta was replaced to Bacillariophyceae in Dalbang Dam, respectively. Correlation analysis between algal growth and environmental factors indicated that Cyanophyta and Bacillariophyceae correlated in opposition with dissolved inorganic phosphorus(DIP) in Kwangdong Dam, while in Dalbang Dam, Cyanophyta and Bacillariophyceae correlated in opposition with Temperature. However Cyanophyta correlated with total phosphorus and Bacillariophyceae with DO. |