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Purifying Water with a Natural Filter — Charcoal, Sand & Gravel
Karen

Yaremwe na

Karen

19. Werurwe 2026SE
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Purifying Water with a Natural Filter — Charcoal, Sand & Gravel

Build a three-layer water filter from charcoal, sand, and gravel. Important: always boil filtered water for 1 minute — filtration alone does not kill all pathogens.
Utangiye
30-45 minutes

Amabwiriza

1

Filter Layer Diagram

Water flows top to bottom through three layers: charcoal (chemical filtration) → sand (physical filtration) → gravel (structural support). Always boil after filtering.

Flow

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2

Make Charcoal

Burn hardwood until fully black. Smother with sand to stop combustion. Cool, then crush to pea-sized pieces. ~2 cups needed.

Ibikoresho bikenewe:

Ikintu cyo gucana umuriroIkintu cyo gucana umuriro
Icyuma gikata cy'akaziIcyuma gikata cy'akazi
3

Assemble Filter

Container (bark cone, hollow log, or cut bottle). Grass plug at drain. Layer: 5-8cm gravel, 8-10cm sand, 5-8cm charcoal, thin gravel cap on top.

Igishushanyo

Cross-section: labeled layers with measurements

Ibikoresho by'iyi ntambwe:

IcyomboIcyombo1 igice
Umutwe w'ibicanwa byorohejeUmutwe w'ibicanwa byoroheje1 urushyi
Amabuye matoAmabuye mato2 ibikombe
Umusenyi MutoUmusenyi Muto3 ibikombe
Amakara AmenaguritseAmakara Amenaguritse2 ibikombe
4

Filter & Boil

Pour water slowly. Discard first dark batch (charcoal dust). By third pass, water runs clear. ALWAYS boil 1 minute before drinking.

Ibikoresho bikenewe:

Ikintu cyo gucana umuriroIkintu cyo gucana umuriro

Ibikoresho

7

Ibikoresho bikenewe

4

CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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