Clearflow UF-HC 150

Eight PVDF modules on a stainless frame with an air-scour blower and an automatic backwash sequence. Its only job is to hand a stable SDI to whatever sits downstream — and it does that whether the raw water is 2 NTU or 50 NTU.

What it is designed to do

The Clearflow UF-HC 150 is a standard Clearflow configuration rated at 15 m³/h of permeate at 92 % system recovery, which is 360 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 3,000 mg/L TDS, SDI15 below 20, turbidity below 50 NTU
• Membrane hardware — 8 elements across 8 vessels, 440 m² of active area
• Energy — 0.12 kWh/m³ of product at design conditions, 7.5 kW installed motor load
• Delivery — 3.2 × 1.6 × 2.4 m, 1,250 kg dry, 8–10 weeks ex works

How the array is put together

The array is arranged as single rack, 8 modules in parallel. Element type is PVDF outside-in hollow fibre module, 55 m² each, running on hydrophilic PVDF, 0.03 µm nominal pore size. Design flux is held at 34.1 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

Chemically enhanced backwash every 24 h plus monthly CIP, 300 L. Control is by Industrial PLC with fixed-flux, variable-TMP control loop. The wetted specification is 316L manifolds, uPVC low-pressure lines, PVDF module bodies. Pressurisation is by horizontal feed pump plus dedicated backwash pump, both 316L; not applicable to a low-pressure barrier.