How a South African town cleaned up its polluted river using stones, wood and sand
<p>All it took to turn the murky, heavily polluted waters of South Africa’s Stiebeuel River into a resource clean enough for irrigating a community’s vegetable plots was a collection of stones, heat-treated wood and sand. Without chemicals and using renewable energy, researchers from the University of Cape Town are cleaning 36 000 litres of water, […]</p> <p>The post <a href="https://www.namibian.com.na/how-a-south-african-town-cleaned-up-its-polluted-river-using-stones-wood-and-sand/">How a South African town cleaned up its polluted river using stones, wood and sand</a> appeared first on <a href="https://www.namibian.com.na">The Namibian</a>.</p>