| TP, TN and COD release, refilled water quality and algae change were investigated after sediment dredging for South Lake of Nanjing. The results showed that average concentration of TP in the water had not changed but average concentrations of TN and COD increased after the refilled water. The concentrations of TP, TN and COD were rising. From the March of the year 2005, a large number of algae reproduced. Algal bloom happened in the July of the year 2005 and dominant species of alga community changed from euglena, cryptomonas, cyclotella to euglena, scenedesmus and wes algae. The algae concentration increased from 3.7106 L-1in the March of the year 2005 to 1.5107 L-1 in the April of the year 2006. |
