.1.Removal of nutrient salts(electric generator) 2. Forming the inside circulating stream 3. Control the algal increase by vortex of water layer and wave 4. Sediment the non-decomposition substances by supplying negative ions (improve the turbidity)
1. Operation of treatment system 2. Prevention of stagnation and accumulation through circulating water and increase of air solucility 3. Discharge of treated water that has strong self-cleansign function (good adaptation for lake ecosystem)
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