Large amount of sewage water generated in communities finds its ultimate disposal/release (either direct or indirect) into soil, agriculture land or water bodies. Such release lead to environmental pollution and variation in physiochemical parameter of soil or water into which such polluted water loaded with organic ,inorganic components, heavy metals, other toxic components is released. Several alternatives have been reported to control/ detoxify such polluted water.Utilization of algae species for treatment of polluted water has gained momentum in recent past owing to theirfast growth and inherent potential to detoxify polluted water. In the present, study of for algae species Scenedesmus abundans, Chlorella singulais, Chlorella minutissima and Chlorella sorokiniana were cultivated in sewage water collected from Kehri village are and all selected algae species were simultaneously cultured in BBM medium (which served as control). All the four algae species exhibited enhanced growth in sewage water as compared to culture medium and all algae species were found to reduce COD of polluted water. Among the four algae species C. minutissima was found to possess maximum growth rate among the four algae species. Findings of present study reveals the selected algae species can be effectively employed on large scale for treatment of polluted water.
