CONSTRUCTED WETLANDS FOR SEWAGE TREATMENT

A constructed wetland is essentially, a shallow basin filled with a substrate, usually sand and gravel, and planted with vegetation tolerant of saturated conditions. Constructed wetlands are efficient sanitation technologies and act as bio-filters that remove a range of pollutants from wastewater. They also increase the biodiversity in urban areas and present exciting opportunities for decentralised wastewater treatment in the city.

Primary Function

• Treats sewage, recycles water for non-potable use

• Reduces load on existing sewage network

Added Benefits

• Increased biodiversity

• Absorbs peak rains

• Prevents erosion

• Reduces overheating (in comparison to paved areas)

• Carbon sequestration

• Improved urban quality

• Communicates urban water dynamics