Fecal sludge management in the tropics

We have been commissioned by BORDA (Bremen Overseas Research & Development Association) to develop a model design for fecal sludge management (FSM) for India and other tropical countries.

We submitted this study with the title 'Model design for a faecal sludge treatment system based on constructed wetlands for tropical regions' in February 2017. A first realization  has been done by BORDA South Asia in Leh town, Ladakh, Northern India at an altitude of 12,000 feet. The faecal sludge is discharged by tankers, passing a screen and is then distributed onto sludge drying reed beds (10 x 48m²).

Seepage water is treated by a horizontal flow constructed wetland and stored in a polishing lagoon (with a UV-lamp for disinfection). For planting Phragmites karka and Canna indica will be used. The design capacity of the faecal sludge treatment plant is 12 m³/d serving the septic tank sludges of about 30,000 citizens.