Fang River, Old Summer Palace

Project introduction: The water area is 6000m2 and the average depth is 1.6m.As the lake is lack of water source, it is supplied by recycled water over along period of time. Before the treatment, water quality reached the standardof surface water Class V, and the transparency was 0.3m. 

Purification effects: Main eutrophic indexes (dissolved oxygen, ammonia nitrogen, totalnitrogen, total phosphorus, potassium permanganate index, etc.) reach or betterthan the standard of surface water (GB3838-2002) Class Ⅲ. Watertransparency reaches more than 1.4m.       

Project completion date: May 2007

Before the treatment  

After the treatment