Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) play important role in determining the
quality of wastewater. Hence it is necessary to calculate COD and BOD of water before setting up of wastewater treatment plant.
Algae has been used for decades for various purposes. It is one of the important characteristics is to nitrogen, phosphorus etc.,
which are harmful for drinking and other purposes but they act as food for algae.