Evaluation of Microalgae Performance in Different sectors of Wastewater Treatment Plant Using Statistical Analysis

Industrialization and growth of population during the last century has led to destruction of many ecosystems used by mankind. Entrance of different kinds of sewage to open water and rivers is known as the first factor reducing the quality of water resource available for mankind. The volume of pollutants in the sewage including total suspended solid, biological oxygen demand and chemical oxygen demand, reached tens of thousands milligrams per liter (Chan et al., 2009).Generally, in order to achieve sustainable economic development, water resources and wastewater management are necessary. Hence, it is necessary to use cost effective methods beside practical methods. Using microalgae for treatment of different kinds of municipal, agricultural and industrial wastewater is an affordable method (de Godos et al., 2010; Di Termini et al., 2011; Muñoz and Guieysse, 2006). Nowadays using microalgae in wastewater treatment has gained lots of attention, since microalgae can produce large amounts of biomass in order to attain valuable products and energy besides wastewater treatment and also prevent carbon dioxide from entering the atmosphere. Furthermore, treatment of different kinds of wastewater by means of microalgae is an environmental friendly method, because in this process no secondary pollutant is produced. The produced biomass is also recycled and used (Olguin, 2003; Rawat et al., 2011).