Rispri LabsENGINEERING A CIRCULAR FUTURE

SALTY WATER, RO AND MEMBRANES / 05

Ready: level 7 of 9Tested in the fieldAny RO plant

Giving old RO membranes a second life.
Turn old RO membranes into working ones.

Used RO membranes are thrown away as plastic waste that is hard to get rid of. A chemical treatment turns old RO membranes into working membranes for easier jobs, so they are reused instead of dumped.

Discuss your problem See how it works
SALTY WATER, RO PLANTS AND MEMBRANESDelivered by Rispri Labs
Salty water, RO plants and membranes
Salty water, RO plants and membranes

What it achieves

The key numbers.

Second life

for used RO membranes.

Less waste

plastic kept out of landfill.

Lower cost

than new membranes for easy jobs.

Problem and fix

The problem this solves.

  1. 01
    The problem

    Used RO membranes are thrown away as plastic waste that is hard to get rid of.

    How it is fixed

    A chemical treatment turns old RO membranes into working membranes for easier jobs, so they are reused instead of dumped.

How it works

Step by step.

  1. 1

    Collect

    Used RO elements are gathered.

  2. 2

    Treat

    A chemical treatment changes the membrane surface.

  3. 3

    Grade

    Each is graded for its new job.

  4. 4

    Reuse

    They go back into service for easier duties.

Key features

Why it works well.

Old membranes become usable again.

  • Low-salt dutiesReused for slightly salty water or wastewater reuse.
  • UF-like useSome become filters for germs and mud.
  • Solves disposalOld membranes are hard-to-dispose plastic waste.

At a glance

The details.

InputEnd-of-life RO membranes
OutputMembranes for low-salt water, wastewater reuse or UF-type filtering
Ready levelLevel 7 of 9 (tested in the field)
ScaleAny RO plant

Costs are indicative and change with your water, site and plant size. We confirm them after testing a sample.

Where it is used

Who it is for.

  • RO plant operators
  • Industries with many RO units
  • Membrane recyclers

Questions

Frequently asked questions.

Is this technology proven?

Yes. It is at ready level 7 of 9, which means: tested in the field. Old membranes become usable again.

Can we try it on our own water first?

Yes. We test a sample in our NABL-accredited lab and, where it helps, run a small trial on your site before you invest in a full plant.

Do you supply and install it?

Yes. We design, supply, install and start up the system, train your staff, and our lab checks the treated water.

Salty water, RO plants and membranes

Ready: level 7 of 9Small RO and NF plants that waste lessThe water is salty and may also have fluoride, arsenic or nitrate.Ready: level 9 of 9Solar-powered salt removal that keeps mineralsThe water is salty, but RO removes all the good minerals and wastes too much water.Ready: level 7 to 9 of 9UF plant that wastes almost no waterThe water is not salty but has germs or mud. An RO plant would only waste water here.Problem guideWhy Village RO Plants Stop Working, and What Works BetterMany villages do not need RO at all. Where they do, the plant needs someone watching it.

THE NEXT STEP

Fix it on
your own site.

Send us a water sample or a test report. We will check it, confirm this method fits and tell you what it costs to run.

Discuss your problem
THIS SEGMENTSalty water, RO and membranesALL TECHNOLOGIESAll proven technologies