Dynamic membrane vs traditional filtration.
A side-by-side technical comparison of pre-coat dynamic membrane filtration against the conventional UF, RO and sand technologies it competes with — across pressure, flux, fouling profile, energy consumption, chemical use, and 10-year operating economics. Written for process engineers and operations leads who need to make a defensible technology decision.
What's inside
The separation spectrum
Where dynamic membrane sits relative to MF, UF, NF and RO — and why the 10 nm – 5 µm tunable range matters in practice.
How a self-renewing gel actually works
The four-step cycle (pre-coat → separate → backwash → re-coat) explained without the marketing varnish. With TMP-trigger thresholds.
Apples-to-apples on energy
Specific energy comparison (kWh/m³) with the assumptions stated. Why 1.8 bar operating pressure changes the maths for off-grid and Green Star contexts.
Real fouling data
12 months of operational data from a Purus 100.5 deployment. Backwash frequency, gel re-supply rate, downstream membrane life extension.
10-year economic model
CAPEX + OPEX comparison vs RO-only and UF-only architectures. Sensitivity analysis on power and chemical price escalation.
Independent validation
Method and results from the ALS Laboratories test programmes at CS Energy and Evolve Group. Where the validated numbers came from.
Who this is for
Process and operations engineers evaluating membrane technologies. Capital-projects managers building business cases. Sustainability and ESG leads needing a defensible technology choice. Anyone running an existing UF or RO train who wants to know whether a Purus stage upstream is worth the install.
Format
28 pages, A4 PDF. Includes process flow diagrams, comparison tables, and references. Written by the Blue Quest engineering team.
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