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EDI Pure Water Machine,Water Utilization Rate ≥90%
EDI main economic and technical indicators
1. Pretreatment flow ≥2.5T/H;
2. The first-level reverse osmosis product water ≥ 1.5T/H;
3. Secondary RO water production≥1T/H;
4. First-level reverse osmosis conductivity ≤15μs/cm;
5. The conductivity of secondary reverse osmosis ≤10μs/cm;
6. EDI product water resistivity ≥14MΩ·CM;
7. Polishing mixed bed water production resistivity ≥17MΩ·CM (using
nuclear grade resin) (with 25L inside, 35-50 tons of water per
liter);
8. EDI product water flow ≥1000L/H;
9. Utilization rate of primary reverse osmosis water ≥65%;
10. The utilization rate of secondary reverse osmosis water is
≥85%;
11. EDI water utilization rate ≥90%;
12. EDI service life: 3-5 years (when the water quality and water
volume do not meet the standards, the membrane block needs to be
cleaned).
Application of EDI in electroplating coating
In the electroplating and coating industry, in order to increase
the surface finish, brightness, and adhesion of the plated parts,
the preparation of the electroplating solution requires pure water
with a conductivity of 15uS/cm or less, and the conductivity of
10uS/cm is also required when rinsing the plated parts. The
following pure water is used for cleaning. The electroplating
industry water treatment system includes the pure water treatment
system required for the preparation of the electroplating solution
before electroplating, and the rare metal recovery and rinsing
water recycling wastewater zero discharge system in the
electroplating rinsing wastewater. Usually the system is composed
of ultrafiltration device, reverse osmosis device, ion exchange
device, EDI device, etc. to meet the water quality requirements of
the electroplating industry.