In 2020 and 2021, with support from WaterShare Ireland , GOAL designed, built and commissioned the first ever faecal sludge treatment facility for the city of Freetown in Sierra Leone. The plant was designed as a pilot plant to evaluate the performance of a relatively new technology – geotextile bags – unproven in this type of context. Since then, the plant has continued to operate treating approximately 10 truckloads (70m3) per day.
Why geotextile bags? The small footprint and minimal infrastructure requirements suggest that geotextile bags (geobags) have potential as short to medium term solutions for sludge dewatering – particularly where access to suitable land for conventional treatment is a challenge (e.g. poorly planned, expanding urban centres) or a decentralised treatment strategy is adopted.
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