Virus removal in waste stabilization ponds in India

Abstract Among the low cost waste treatment methods suitable for tropical developing countries, stabilization ponds are shown to be least expensive, simple to construct and operate. A quantitative evaluation of the extent of virus removal in both pilot and full-scale ponds have been made in different seasons. Experimental pilot ponds operated at depths of 3–5 ft at different loading rates indicated an average virus removal in the range of 86–95%. Full scale ponds with detention times ranging from 2.7 to 17.2 days showed virus removal efficiencies ranging from 88 to 98%.