Waste stabilization ponds (or stabilization ponds and abbreviated as WSPs) are ponds built for wastewater treatment where biological processes occur which reduce the organic content (measured as biochemical oxygen demand (BOD)) and kill pathogens in the wastewater. Ponds are depressions holding water confined by earthen structures. Waste stabilization ponds are commonly used for wastewater treatment in developing countries. They are frequently used to treat sewage, industrial effluent, municipal run-off or stormwater.
After treatment, the effluent may be returned to surface water or reused as irrigation water (or reclaimed water) if the effluent quality is high enough.
Waste stabilization ponds, as described here, use no aerators. High-performance lagoon technology with aerators has much more in common with that of activated sludge. Such aerated lagoons are common in small towns in the United States, among other places.[2]
Segment from Let’s Clean Up This Mess, a film on sanitation post tsunami. Case study: East Devdhanam in Trichy (Tamil Nadu), where Community Based Sanitation-DEWATS has been quite successful.
Design calculations and specifications for modeling upflow settling tanks are described.
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