A REVIEW ON ANAEROBIC TREATMENT FOR WASTEWATER:APPLICATION, METHOD AND RESULTS

Chemical oxygen demand (COD) indicates the amount of organic matter present in the wastewater. This organic matter depletes the dissolve oxygen (DO) content. Also presence of ot her pollutants like suspended solids, phosphorous , metals etc. is not desirable in the wastewater. Biological treatments are economical and effective for organic matter removal. Anaerobic mode of biological treatment is very effective for treating domestic and industrial sludge containing high organic loading. Various investigators have investigated the anaerobic treatment methods with respect to affecting parameters, removal efficiency and economy. The current review summarizes studies and research on anae robic wastewater treatment .