Double-Pass RO
Double-Pass RO System
Two-stage reverse osmosis for conductivity below 5 µS/cm — the standard choice for pharmaceutical, electronics and food-grade process…
View detailsDouble-Pass RO
EDI Ultrapure Water System
Electrodeionisation after double-pass RO for 10–18 MΩ·cm water without chemical regeneration — the standard package for pharmaceutical and electronics plants.
- ZC-EDI-5
- 0.5–20 m³/h
- Pharma grade
What makes this system different
- No acid / caustic regeneration
- 10–18 MΩ·cm stable output
- TOC below 10 ppb
- Sanitary distribution loop
EDI replaces mixed-bed polishing with a continuous electrical process: no acid or caustic storage, no regeneration downtime, and stable resistivity day after day.
Package scope
- Double-pass RO feed with antiscalant and cartridge filtration
- EDI stack with DC power supply
- UV 185 nm and 0.22 µm final filtration
- Resistivity, TOC and flow instrumentation
- Distribution loop with sanitary fittings
Technical specifications
| Model | ZC-EDI-5 |
|---|---|
| Capacity | 0.5–20 m³/h |
| Recovery rate | 70–80% |
| Salt rejection | ≥ 99.9% |
| Installed power | 3–18 kW |
| Power supply | 380V / 50Hz / 3Ph (or to client standard) |
| Frame / wetted material | SS316L / PVDF wetted |
| Membrane | RO 8040 + EDI stack |
| Warranty | 24 months |
| Lead time | 25–35 days |
| Product resistivity | 10–18 MΩ·cm |
| Feed conductivity | < 10 µS/cm (after 2-pass RO) |
| TOC | < 10 ppb |
Specifications are indicative. Final design is confirmed against your water analysis and site conditions.
Typical applications
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