Abstract: An analytical solution is developed for biochemical oxygen demand (BOD) and dissolved oxygen concentration (DO) in a river for the case when BOD loading concentration and DO loading concentration each vary sinusoidally. ...

Abstract: The empirical biochemical oxygen demand (BOD) equation is expressed as a multiorder reaction equation of order

Abstract: A multitude of natural processes occurring in environmental and water resources are diffusive processes, and their observations exhibit a natural lower bound of zero and practically no upper bound. Such processes can be ...

Abstract: A probability distribution is developed to describe data collected from processes that are diffusion driven, in addition to data sets in which the range of the random variable has a fixed lower bound, a fixed upper bound, ...

Abstract: Wastewaters containing sugars are easily and rapidly biodegraded, which results in their exerting a short period of intense demand for dissolved oxygen (DO). Their carbonaceous biochemical oxygen demand (BOD) is described ...