Rispri LabsENGINEERING A CIRCULAR FUTURE

SAFE DRINKING WATER / 02

Ready: level 9 of 9Already in useOne home

Bead filter for fluoride.
Stop fluoride stains on children's teeth.

Children in the family have yellow or brown stains on their teeth, a common sign of too much fluoride. Water passes through small round beads that hold on to fluoride.

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ARSENIC AND FLUORIDE IN BOREWELL WATERDelivered by Rispri Labs
Arsenic and fluoride in borewell water
Arsenic and fluoride in borewell water

What it achieves

The key numbers.

2,000 hours

of use on one charge of beads.

3 to 5 L/h

gravity flow, adjustable.

No sludge

and no power needed.

Problem and fix

The problem this solves.

  1. 01
    The problem

    Children in the family have yellow or brown stains on their teeth, a common sign of too much fluoride.

    How it is fixed

    Water passes through small round beads that hold on to fluoride. The filter makes no sludge and needs no power.

How it works

Step by step.

  1. 1

    Pour

    Pour water into the filter.

  2. 2

    Catch

    Small round beads hold on to fluoride and similar unwanted salts.

  3. 3

    Collect

    Safe water flows out of the tap.

  4. 4

    Recharge

    Replace the bead cartridge after about 2,000 hours.

Key features

Why it works well.

Works for about 2,000 hours at 3 litres an hour on water with 2.5 to 3 mg/L fluoride.

  • Works at normal water pHNo need to adjust the water first, unlike older alumina filters.
  • No sludgeNothing to clean out or throw away except the used beads.
  • Gravity flowNo pump and no power.
  • Multi-stageOne model also filters out germs.

At a glance

The details.

Output3 to 5 litres an hour
HandlesFluoride of 2.5 to 3 mg/L
Bead lifeAbout 2,000 hours at 3 L/h
Running costAbout 20 to 25 paise a litre
PowerNone
Ready levelLevel 9 of 9 (already in use)
ScaleOne home

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.

  • Homes in fluoride areas
  • Schools and hostels
  • Rural clinics

Questions

Frequently asked questions.

Is this technology proven?

Yes. It is at ready level 9 of 9, which means: already in use. Works for about 2,000 hours at 3 litres an hour on water with 2.5 to 3 mg/L fluoride.

What does it cost to run?

About about 20 to 25 paise a litre. The exact figure depends on your water and the size of the plant. We confirm it after testing a sample.

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.

Arsenic and fluoride in borewell water

Ready: level 6 to 9 of 9Home filter for arsenic and fluorideA family drinks borewell water with arsenic or fluoride, and power cuts are common.Ready: level 6 to 7 of 9Village arsenic plant on the hand pumpThe village hand pump gives clear water that tests high for arsenic.Ready: level 9 of 9Arsenic resin plant for villagesThe village has arsenic in its water and no steady power supply.Problem guideArsenic and Fluoride in Borewell WaterThe water looks clean and tastes fine, but it can still harm you over the years. Here is how to make it safe for a few paise a litre.

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
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