SAFE DRINKING WATER / 07
Electric treatment for very high fluoride.
For fluoride too high for ordinary filters.
Fluoride is so high (5 to 10 mg/L) that ordinary filters run out within weeks. A small electric current passes through metal plates in the water.
What it achieves
The key numbers.
of fluoride handled.
less sludge than chemical treatment.
per batch in about 3 hours.
Problem and fix
The problem this solves.
- 01The problem
Fluoride is so high (5 to 10 mg/L) that ordinary filters run out within weeks.
How it is fixedA small electric current passes through metal plates in the water. The plates slowly form tiny flakes that catch fluoride or arsenic, and the flakes are filtered out. One model runs on solar panels.
How it works
Step by step.
- 1
Fill
Water fills a treatment tank with metal plates.
- 2
Current
A small electric current makes the plates form tiny flakes.
- 3
Trap
The flakes catch fluoride or arsenic and float or settle out.
- 4
Filter
Clear water is filtered and stored.
Key features
Why it works well.
Brings fluoride from 5 mg/L to below 1 mg/L. Makes much less sludge than adding chemicals.
- Handles very high fluorideWorks up to 10 mg/L, where filters run out fast.
- Solar optionOne model runs on solar panels.
- Less sludge60 to 70% less sludge than adding chemicals.
- Also kills germsBacteria in the water drop at the same time.
- Easy to runSimple enough for village operators.
At a glance
The details.
| Output | 20 to 200 L/h continuous, or 2,000 L per batch |
|---|---|
| Results | Fluoride from 5 mg/L to below 1 mg/L |
| Arsenic | Home de-arsenator model available |
| Running cost | About 18 to 20 paise a litre |
| Power | Small current, solar possible |
| Ready level | Level 6 to 9 of 9 (already in use) |
| Scale | Home to town |
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.
- High-fluoride villages
- Town water supply
- Mining areas
Questions
Frequently asked questions.
Is this technology proven?
Yes. It is at ready level 6 to 9 of 9, which means: already in use. Brings fluoride from 5 mg/L to below 1 mg/L. Makes much less sludge than adding chemicals.
What does it cost to run?
About about 18 to 20 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
Other ways to fix this problem.
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