Introduction to typical ultra-pure water production processes

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This post was last edited by hesonchang214 on 2019-11-5 06:58.
1. Pre-treatment system → Reverse osmosis system → Intermediate water tank → Coarse mixing bed → Fine mixing bed → Pure water tank → Pure water pump → UV sterilizer → Polishing resin → Precision filter → Water user (≥18MΩ.CM) (traditional process)
2. Pre-treatment → Reverse osmosis → Intermediate water tank → Water pump → EDI unit → Purification water tank → Pure water pump → UV sterilizer → Polishing resin → 0.2 or 0.5μm precision filter → Water user (≥18MΩ.CM) (new process)
3. Pre-treatment → First-stage reverse osmosis → Chemical dosing machine (pH adjustment) → Intermediate water tank → Second-stage reverse osmosis (positively charged reverse osmosis membrane) → Pure water tank → Pure water pump → EDI unit → UV sterilizer → 0.2 or 0.5μm precision filter → Water user (≥17MΩ.CM) (new process)
4. Pre-treatment → Reverse osmosis → Intermediate water tank → Water pump → EDI unit → Pure water tank → Pure water pump → UV sterilizer → 0.2 or 0.5μm precision filter → Water user (≥15MΩ.CM) (new process)
5. Pre-treatment system → Reverse osmosis system → Intermediate water tank → Pure water pump → Coarse mixing bed → Fine mixing bed → UV sterilizer → Precision filter → Water user (≥15MΩ.CM) (traditional process)