These are parameters that are amenable to treatment by an effluent treatment plant, meaning proper operation is critical to controlling their discharge. The parameters mostly relate to the proper operation of an effluent treatment plant (including not overloading its capacity). They include factors such as temperature, pH, carbonaceous organic matter in terms of BOD (biochemical oxygen demand), COD (chemical oxygen demand) and DO (dissolved oxygen) and suspended and dissolved solids. | tradtional parameters | LINK |