1. Pre treatment - reverse osmosis - water tank - cation bed - anion bed - mixed bed - purified water tank - pure water pump - ultraviolet sterilizer - refined mixed bed - precision filter - water target
2. Pre treatment - first stage reverse osmosis - dosing machine (pH adjustment) - intermediate water tank - second stage reverse osmosis - purified water tank - pure water pump - ultraviolet sterilizer -0.2 or 0.5 μ m precision filter - water object
3. Pre treatment - reverse osmosis - intermediate water tank - water pump - EDI device - purified water tank - pure water pump - ultraviolet sterilizer -0.2 or 0.5 μ m precision filter - water object
4. Pre treatment - reverse osmosis - intermediate water tank - water pump - EDI device - purified water tank - pure water pump - ultraviolet sterilizer - refined mixed bed -0.2 or 0.5 μ m precision filter - water object