Waste water treatment using water hyacinth

Abstract
Conventional treatment methods such as trickling filter, activated sludge process etc. are used in order to treat sewage. Thus energy, cost, manpower are consumed in a large amount. Just as non-conventional sources are now necessary over conventional sources for the mode of energy, eco-friendlier and energy saving ways to treat sewage is the need of time and should be put to use. The natural ways is extremely cost saving. Water hyacinth is a free-floating perennial aquatic plant native to tropical and sub-tropical South America. With broad, thick, glossy, ovate leaves, water hyacinth may rise above the surface of the water as much as 1 meter in height. The leaves are 10–20 cm across, and float above the water surface. They have long, spongy and bulbous stalks. The feathery, freely hanging roots are purple-black. An erect stalk supports a single spike of 8-15 conspicuously attractive flowers, mostly lavender to pink in color with six petals.
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Project Report - CE
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