Phytoremediation of dairy effluent by constructed wetland technology |
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Authors: | S Dipu Anju A Kumar V Salom Gnana Thanga |
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Institution: | (1) Department of Environmental Sciences, University of Kerala, Thiruvananthapuram, Kerala, India;(2) Kerala State Biodiversity Board, Pallimukku, Pettah P.O., Thiruvananthapuram, Kerala, 695 024, India |
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Abstract: | Constructed wetlands are artificial wastewater treatment systems consisting of shallow ponds or channels which have been planted
with aquatic plants and which rely upon natural microbial, biological, physical and chemical process to treat wastewater and
are gaining acceptance in the recent years as a viable option for the treatment of industrial effluents and removal of toxic
components. In this study, an attempt was made to compare the efficiency of aquatic macrophytes like Typha sp., Eichhornia sp., Salvinia sp., Pistia sp., Azolla sp. and Lemna sp. to treat the effluents from dairy factory, under laboratory conditions in constructed wetlands. The biological oxygen
demand and chemical oxygen demand of dairy effluent were reduced up to 65.4–83.07% and 70.4–85.3%, respectively, after treatment
with constructed wetland technology. |
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Keywords: | |
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