Biochemical Oxygen Demand

What Biochemical Oxygen Demand (BOD) Measures?

29 October 2022 Jefy Environmental Engineering, Water Pollution

Biochemical Oxygen Demand or BOD gives a measure of the amount of oxygen that the microbes utilize to degrade organic materials in a water body. Also, BOD measures the chemical oxidation of inorganic materials i.e., the removal of oxygen from water via a chemical reaction. The BOD value is generally expressed in milligrams of oxygen used per litre of the sample over a 5-day incubation period at 20 °C, and it is frequently used as an estimate of the degree of organic pollution in water. The reduction of BOD is used in evaluating the efficacy of wastewater treatment systems.

What are Water Pollutants? – Definition, Sources and Types

27 June 2021 Jefy Environmental Engineering, Water Pollution

Water Pollutants kill more people every year than from all forms of violence including war, according to the UNDESA. Every day, 2 million tons of sewage, industrial, and agricultural waste reaches water bodies all over the world. With the growth of the human population, industrial and agricultural activities the hydrological cycle got disrupted. As a result, declining water quality has become a global issue of concern. In this blog, I will take you on a short trip exploring the various water pollutants, its sources and effects.