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Stones, Wood, and Sand Clean Rivers | Namibia News
In a stunning feat of eco-engineering, scientists in South Africa have built a solar-powered water purification system using just stones, wood, and sand—transforming polluted river water into irrigation-ready quality. Located in the rapidly growing town of Langrug, this “Water Hub” treats 36,000 liters daily, removing sewage, chemicals, and even medication traces, enabling community gardens to flourish. Developed since 2018, the five-day filtration process leverages biochar from heated wood to tackle stubborn pollutants, while natural materials handle the rest—all without electricity or…
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