 

BOD (biochemical oxygen demand) exertion calculator  formula & step by step calculation to measure the amount of oxygen used by bacteria to metabolize organic material in water to design & analysis of biological treatment systems. y_{t}  amount of BOD exerted at time t in mg/L. y_{t} = L(1  e^{k1t}). The ultimate BOD L in mg/L, time t in days & deoxygenation rate constant k_{1} in 1/days or days^{1} are the key elements of this calculation.
In environmental engineering, the below formula is used to calculate the amount of BOD exerted at time t. This calculator provides step by step calculation for each set of inputs let users to understand how to perform such BOD exertion calculations manually for environmental impact analysis
In the field of environmental engineering, while working with the design & analysis of biological treatment systems, sometimes it's important to analyse the BOD exertion between different number of days. The above formula & the step by step calculation may useful for users to understand how the values are being used in this calculation, however, when it comes to online for quick calculations, this BOD exertion calculator helps the user to perform & verify such calculations as quick & easy as possible.