Author(s): J. P. Yanes; J. P. Ortiz; J. A. Vilalta
Linked Author(s): Jayme P. Ortiz
Keywords: Submarine outfall; Initial dilution; Design of experiment; Hydrodynamics simulation
Abstract: The preservation of coastal waters is a field whose importance has been accentuated much in recent times with the increasing use of the coastal environment by increasing the population in these areas. Because of this, the discharge of sewage through outfalls became the target of many researches both in engineering and in other areas of interest. A well designed submarine outfall, with a discharge point adequately selected, that consider the inter-relationship between the type of wastewater and pretreatment with the diffuser design and the hydrodynamics of the receiving water body, is the way to achieve efficient systems. It is common the use of computer simulation in the study of plume dispersion process of sewage at sea. Sometimes it is difficult to adjudicate cause and effect in the study of the results of a simulation. However, if these results obtained from simulations in which some parameters were controlled logically; the cause of observed changes in the response studied is easily identified. Logically statistical tools help control any parameter group. The objective of this work is to obtain between several parameters, the most important parameters for the process of initial dilution of effluent in a system outfall, using the statistical tool: Design of Experiments (DOE), to help to decide between two system alternatives, the most efficient. This study is part of a larger research that aims to help in optimizing these systems, both design and maintenance phase, as well as the adaptation of older systems. This method was applied in the study of an outfall in Ilhabela-São Paulo. The scientific hypothesis is based on the application of DOE for hydrodynamic simulation to define what are the most influential parameters for the system, so that when modified appropriately, could ensure the best initial dilution of effluent.
Year: 2016