Abstract
Restoration of eco-river took advantage of double river canal, tegular dam, and wetland system to purify wastewater from Hefeng village. The river flood control standard could meet 50-year flood with double river canals. And tegular dams were piled up of eco-bags which could come into buds and plants. They divided the river into 5 wetlands. In the wetland, bacterial was oxidized and decomposed, and algae carried out photosynthesis. Diversified aquatic vegetation and animal were introduced. They formed intricate food chains to degradate organisms and assimilate inorganic substance. The eco-river purified water, and made friendly habitat for all the creatures.
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