Aqueous Solutions Biosand Water Filter (300 L/day)¶
BioSand & Media Filters • Est. CapEx: $40 USD • Lifespan: 20 Years (Standardized)
Technical Overview¶
A robust biosand filtration unit built to deliver approximately 300 liters per day for household or small-community use. Based on the Aqueous Solutions design model demonstrated by ECHO Asia, it relies on a biologically active sand bed for sustained contaminant removal.
Key Specifications & Engineering Parameters¶
| Parameter | Specification |
|---|---|
| Category | BioSand & Media Filters |
| Capital Cost (CapEx) | $40 USD |
| Power / Energy | 100% Gravity / Zero Power |
| Target Scale | Household (5–10 people) |
| Standard Lifespan | 20 Years (Standardized) |
| Technology Maturity | Field Tested |
| Primary Mechanism | Water enters through a diffuser plate to prevent disturbance of the biological layer (schmutzdecke) at the sand surface, where predators consume pathogens; subsequent passage through fine sand and gravel provides mechanical filtration and adsorption. |
Cross-Reference & Interactive Tools¶
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