Comparative studies on phycoremediation of sewage water by using blue green algae

摘要

Phycoremediationis the process of employing macro or microalgae which has many advantageous over other conventional methods, as it is low cost and environmental friendly. Therefore present investigation was attempted to reduce the toxic pollutants from the municipal wastewater generated in Pune city using Oscillatoria limosaandNostoc commune. The experiment was conducted using randomized complete block design with three replications at Department of Environmental of Sciences, University of Pune, Pune-7, (MS) India. Theresults revealed that both the species of blue green algae were highly efficient and having very good potential to reduce BOD, COD, TH, TA and TDS and the range of reduction of above mentioned parameters was 95 to 98 %. However the range of increase in DOwas 62-63 % indicated improvement in quality of wastewater. It was concluded that amongst both the algal species used for phycoremediation, Oscillatoria limosa was superior over Nostoc communeas it has high bioconversion ability and tolerance to pollution. The phycoremediation was very effective as both the algal species were well adapted to local conditions