Rispri LabsENGINEERING A CIRCULAR FUTURE

SALTY WATER, RO AND MEMBRANES / 04

Ready: level 6 to 9 of 9Already in useMembrane factory

RO membranes made in India.
RO and ceramic membranes made in India.

Plants wait weeks for imported RO membranes when one fails. Know-how to make RO membranes locally for drinking water and factory use.

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.

250 to 10,000 L/h

plants built on these membranes.

4040 and 8040

standard element sizes.

Local

supply and shorter lead times.

Problem and fix

The problem this solves.

  1. 01
    The problem

    Plants wait weeks for imported RO membranes when one fails.

    How it is fixed

    Know-how to make RO membranes locally for drinking water and factory use. Ceramic membranes are also made for very hot or harsh liquids.

How it works

Step by step.

  1. 1

    Cast

    A support layer is cast as a flat sheet.

  2. 2

    Coat

    A very thin salt-blocking layer is formed on top.

  3. 3

    Roll

    Sheets are rolled into standard elements.

  4. 4

    Test

    Each batch is tested for salt removal and flow.

Key features

Why it works well.

Already in commercial production.

  • High salt removalFor drinking water, brackish water and seawater.
  • Fouling resistantBuilt to clog less.
  • Standard sizesFit existing RO housings.
  • Ceramic optionFor hot, harsh or chemical liquids.

At a glance

The details.

ProductsRO and UF flat-sheet membranes, ceramic membranes
Element sizes4040 and 8040
UsesDrinking water, brackish and seawater, factory water, wastewater
Ready levelLevel 6 to 9 of 9 (already in use)
ScaleMembrane factory

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.

  • Membrane makers
  • RO plant builders
  • Industries with harsh liquids

Questions

Frequently asked questions.

Is this technology proven?

Yes. It is at ready level 6 to 9 of 9, which means: already in use. Already in commercial production.

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