Clearflow RO-SW 450

A complete seawater train on one skid: fifteen vessels, an API 610 BB2 pump and a pressure exchanger that hands the brine energy straight back to the feed.

What it is designed to do

The Clearflow RO-SW 450 is a standard Clearflow configuration rated at 45 m³/h of permeate at 45 % system recovery, which is 1,080 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 45,000 mg/L TDS, SDI15 below 4, turbidity below 0.2 NTU
• Membrane hardware — 90 elements across 15 vessels, 3,348 m² of active area
• Energy — 2.62 kWh/m³ of product at design conditions, 160 kW installed motor load
• Delivery — 9.8 × 2.4 × 3.0 m, 11,800 kg dry, 18–22 weeks ex works

How the array is put together

The array is arranged as single stage, 15 vessels in parallel, 6 elements per vessel. Element type is SW 8040 high-rejection, 37.2 m² each, running on high-rejection seawater polyamide. Design flux is held at 13.4 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

Three-stage CIP with heated tank, 4,000 L. Control is by Industrial PLC with normalised performance trending and remote access. The wetted specification is Super duplex 2507 high-pressure side, duplex 2205 manifolds. Pressurisation is by API 610 BB2 duplex barrel pump, 58 bar discharge; PX isobaric pressure exchanger, 95 % transfer efficiency.