Algal Bioreactor For The Removal Of Residual Pollution Various Parameter From Secondary Biologically Treated Waste Water

Abstract

The waste water generated from various sources like agriculture, industry normally consist of organic and inorganic waste. The main objective of this project is to reduce the both organic and inorganic solids by treating it with the unicellular organism algae. Though many treatment methods were available to reduce the pollutants, based upon the recent researches treatment with algae produces greater results when compared to other microorganisms involved in the treatment process. Algae are preferred because of its attitude of in taking the inorganic substances for their growth and releasing enormous amount of oxygen than the other microorganisms. The species like chlorella pyrenoidosa, cynobacteria, scenedesmus species are the most frequently used algae in waste water treatment. We have taken two waste water samples namely institutional wastewater and sugar mill effluent. The process requires a small retention time and minimum facilities. The effluent obtained after primary treatment generally loaded with inorganic nitrogen and phosphorous due to their presence in water it leads to eutrophication and the process of eutrophication is also stimulated with considerable amounts of heavy metals.  The process is applicable in both aerobic and anaerobic situations. Though open systems are also available for the treatment closed systems provide significant results as they are prevented from atmospheric contact. By proceeding with algae in waste water samples of secondary treated waste water and sugar mill effluent   the reduction in residual pollutants has to be analyzed. The various parameters like DO, chloride, sulfate and pH contents are continuously monitored and the results will be clear in the reduction of residual pollutants.