All-in-one Double Stage Reverse Osmosis Pure Water Machine

When the original water flow through the first feed water pump, the pressure reach 0.3mPa and flow into the mechanical filter which filled with five types of relined quartz sand, at the moment, the floats, turbidity, sit, quick sand which are more than 100um will be retained by the mechanical filter.

The water treated by the mechanical filter are less than 100um and then flow into the activated carbon filter that is filled with Nut shell activated carbon filter of iodine value more than 900. The activated carbon filter can absorb the residual chlorine, peculiar smell, and some inorganic salt and organic salt in the water. The above two steps we call it pretreatment.

Then the water flow into a cartridge filter (also we can call it precision filter) of 1um, it filled with five melt spinning cartridge of 20 inches made by PP, the water filtered by it can reach the inlet standard of RO.

Water filtered by cartridge filter will flow into one stage reverse osmosis system, the recovery rate of pure water is 60%-70%, the waste water will be drain out. Pure water will flow into the second feed water pump and then come into two stage reverse osmosis system, the recovery rate is 80%. At the same time 20% of concentration will be recycled and utilized, one part flow back into one stage reverse osmosis system and another part flow into two stage reverse osmosis system so as to achieve full recycle and utilization. Furthermore, it also adjust the PH value of the water coming into the second stage reverse system, generally PH(7-7.5) and reduced carbon dioxide in the second reverse osmosis system greatly and Improve the desalination rate.

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