The differences between demineralized (DM) water and reverse osmosis (RO) water are key in understanding water purification processes:
1. Production Process:
- RO Water: Created via reverse osmosis filtration, eliminating impurities using a semipermeable membrane.
2. Purity Level:
- DM Water: Targets ionic impurities, leaving non-ionic substances.
- RO Water: More comprehensive in removing ionic and non-ionic contaminants.
3. Applications:
- DM Water: Ideal for industrial uses like boilers and cooling systems.
- RO Water: Commonly used for drinking water and pharmaceuticals.
4. Cost and Maintenance:
- DM Water: Requires periodic regeneration of ion exchange resins.
- RO Water: Membranes need replacement, with pre-treatment to prevent fouling.
5. Efficiency:
- DM Water: Highly efficient in removing ionic contaminants.
- RO Water: Slower and energy-intensive but offers broader contaminant removal.

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