Today, we have organized a workshop with our Technical Program Leader (Environmental Health) for some of our staff. The topic is about Sustainable Sanitation.
We discussed sanitation at different time periods- Emergency, Transition and Long term development. We have also discussed about different designs and their advantages and disadvantages.
The major discussion was around Sub Surface Flow (SSF) Constructed Wetlands.
A subsurface flow (SSF) wetland consists of a sealed basin with a porous substrate of rock or gravel. The water level is designed to remain below the top of the substrate.
The outflow from the septic tanks is connected to the SSF constructed Wetlands, where the water is purified. SSF Wetlands require a vegetated leach field or soak pit for final disposal.
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