BOD: COD Ratio as Indicator for Wastewater and Industrial Water Pollution

Abstract

The relationship between the biochemical oxygen requirement (BOD) and the chemical oxygen requirement (COD) for wastewater / University of Basrah / Garmat Ali and industrial water / Najibiya power station was studied. Chemicals were used as coagulants (Polyacrylamide, anionic and cationic) with different concentrations, as well as aluminum sulfate(alum,), ferric chloride and sodium hydroxide in different concentrations. The results showed that BOD: COD ratio ​​can be used as a good indicator for measuring water pollution, and it can also be used as an indicator to predict the relationship between BOD and COD, as well as knowing the organic matter content in wastewater and industrial water. The results showed that BOD: COD ranged between 0.33-0.89 and seeding is required to treat it biologically.