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Municipal RO drinking-water treatment train

Reverse osmosis membrane changeout

Reverse osmosis train serviced and prepared for startup
Facility type
Municipal RO drinking-water treatment train
Project scale
820 membrane elements handled (400 removed, 420 installed)
Membrane elements
  • FilmTec 440i elements (removed)
  • FilmTec Eco Platinum 440i elements (installed)

The challenge

A municipal reverse osmosis treatment train required a complete membrane changeout to restore performance, executed within a tight six-day shutdown window under strict contamination control.

Outcome

The RO train was returned to service on schedule with all 420 replacement elements installed and verified vessel-by-vessel, supported by documented QA/QC at each hold point.

Scope of work

  • Shutdown, isolation, depressurization, and zero-pressure verification
  • Controlled removal and staging of 400 spent FilmTec 440i elements
  • Pressure-vessel inspection of closures, adapters, seals, and O-rings
  • Installation of 420 FilmTec Eco Platinum 440i elements to approved loading
  • Vessel reassembly to manufacturer torque and closure requirements
  • Flushing, leak-check, and startup support with QA/QC hold points

Project documentation

Photos captured across the phases of the project.

Rows of reverse osmosis membrane pressure vessels
Reverse osmosis pressure vessels
Reverse osmosis membrane element being serviced
Membrane element changeout
Reverse osmosis membrane element end during inspection
Membrane element inspection
Reverse osmosis train serviced and prepared for startup
RO train servicing & startup

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