Here is a design for a storm-water filtration system created by Australia's national science agency. Dhaka receives too much water during monsoon season, and a large percentage of it is wasted. The filtration system (shown above) turns the dirty storm-water into purified, potable water. This can save many lives. The main goals of this system is to protect public health and safety, and reduce flood damage.
Process Of The Filtration System:
- Water is captured in Islambag, Dhaka (South City,Dhaka).
- The captured water settles for 20 days to rid itself of the gross pollutants & fines.
- The storm-water is then treated by passing through a wetland. (this allows particles to settle)
- The water is then injected via wells into a limestone aquifer for storage and months of natural slow filtration through the aquifer.
- For extra safeguard and aesthetic quality the water was aerated, filtered through an activated carbon filter and it underwent micro-filtration and ultraviolet disinfection.
- Finally, the new water is bottled and ready to drink.
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