Biological Treatments and Bio-removal of Heavy Metals From Sewage Water

Abstract

The biological treatment of organic matter and bio-sorption of heavy metals by two compounds were namely bacterial integrated effectiveness ( BIE) is contain mixed different bacteria and algal integrated effectiveness ( AIE) is contain mixed different algae in sewage water were investigated., all of them were prepared under lab condition using as a biological different treatments . Various parameters like Biological oxygen demand (BOD), Chemical oxygen demand (COD), ammonia nitrogen and phosphate were measured after the treatment. Percentage removal rate was found to be 80.49 &83.5% (BOD) and 82.93 & 85.4% (COD) for bacteria ( BIE) and algae ( AIE) compounds , respectively. This is an environmentally safe alternative for treating waste water. The initial time required for maximum bio-sorption and removal of iron ion was estimated to be 48 hrs. and 4 days for bacteria( BIE) and algae ( AIE) compounds, respectively. The bio-sorbent capacity of this biological treatments was investigated. High adsorption to bacteria treated at79 % and algae treated at 87% for iron ion, is achieved in the present study. The value of Freundlich >Temkin equations for bacteria treated and algae, The correlation coefficient (R2) value of bacteria ( BIE) treated at 0.86, whereas for algae ( AIE) treated at 0.94 for iron ion. The order of metal uptake for the dried biomass was found to be Fe removal after 48 hrs. and 4 days by bacteria and algae treated