Clearflow EDI-XL 120

Scaled for continuous plant duty. Modules are grouped in threes on separate rectifier channels so a single stack can be isolated for replacement while the bank keeps running at reduced output.

What it is designed to do

The Clearflow EDI-XL 120 is a standard Clearflow configuration rated at 12 m³/h of permeate at 95 % system recovery, which is 288 m³ over a continuous day. The published envelope assumes 25 °C, a clean membrane and the design feed analysis; every project is re-projected against the water you actually have before a price is issued.

• Feed envelope — up to 30 mg/L TDS, SDI15 below 1, turbidity below 0.05 NTU
• Membrane hardware — 12 elements across 12 vessels, 90 m² of active area
• Energy — 0.18 kWh/m³ of product at design conditions, 15 kW installed motor load
• Delivery — 3.4 × 1.2 × 2.2 m, 1,150 kg dry, 10–12 weeks ex works

How the array is put together

The array is arranged as 4 rectifier channels, 3 modules each — any channel isolatable in service. Element type is EDI module, 1.0 m³/h dilute flow each, running on heterogeneous ion-exchange membranes with permanently regenerated mixed-bed resin. Design flux is held at 133.3 LMH so the concentrate velocity through the last element stays inside the manufacturer envelope at design recovery — the single most reliable predictor of how long the membranes will last.

Operating conditions

Cleaning, control and materials

Chemical free in service; periodic hot water sanitisation to 80 °C. Control is by Industrial PLC with per-channel current control and resistivity divert. The wetted specification is 316L sanitary tubing, orbital welded, polypropylene module bodies. Pressurisation is by duty-standby sanitary 316L feed boosters; not applicable.