SODIS Solar Water Disinfection (PET Bottle Method)¶
Membranes & Advanced Filtration • Est. CapEx: Low-cost / Locally fabricated
Technical Overview¶
A WHO-recognized, zero-chemical water disinfection technique that uses clear PET plastic bottles and direct solar exposure to inactivate waterborne pathogens. Ideal for sunny climates, emergency kits, and off-grid scenarios where fuel is scarce.
Key Specifications & Engineering Parameters¶
| Parameter | Specification |
|---|---|
| Category | Membranes & Advanced Filtration |
| Capital Cost | Low-cost / Locally fabricated |
| Primary Mechanism | UV-A solar radiation and thermal heating in transparent PET bottles damage pathogen DNA/RNA and accelerate microbial die-off. Water is oxygenated by shaking, then exposed horizontally to direct sunlight for a minimum of six hours (two days if cloudy). |
| Target Scale | Household / Village Cluster |
| Standard Lifespan | 10 - 20 Years |
Cross-Reference & Interactive Tools¶
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