DIY Multi-Layer Gravity Bio Filter¶
Disinfection & Chlorination • Est. CapEx: $20 USD • Lifespan: 1 Year (Consumable / Recurring)
Technical Overview¶
A low-cost, gravity-fed filtration system constructed from layered gravel, sand, and activated charcoal within a repurposed bottle or bucket. Designed for emergency preparedness, off-grid households, and camping, it improves clarity and taste while reducing select chemical contaminants.
Key Specifications & Engineering Parameters¶
| Parameter | Specification |
|---|---|
| Category | Disinfection & Chlorination |
| Capital Cost (CapEx) | $20 USD |
| Power / Energy | 100% Gravity / Zero Power |
| Target Scale | Household (5–10 people) |
| Standard Lifespan | 1 Year (Consumable / Recurring) |
| Technology Maturity | Field Tested |
| Primary Mechanism | Raw water percolates downward through sequential media: coarse gravel strains large debris, fine sand traps particulates, and activated charcoal adsorbs chlorine, volatile organic compounds, and odorous compounds via physical straining and surface adsorption. |
Cross-Reference & Interactive Tools¶
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