caa a22 4500 467902720 CHVBK 20180406152823.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s10661-006-1489-3 doi (NATIONALLICENCE)springer-10.1007/s10661-006-1489-3 Simple Model of Dissolved Oxygen Consumption in a Bay within High Organic Loading: An Applied Remediation Tool [Elektronische Daten] [Ramón Ahumada, José Vargas, Liliana Pagliero] San Vicente Bay is a coastal shallow embayment in Central Chile with multiple uses, one of which is receiving wastewater from industrial fisheries, steel mill effluents, and domestic sewage. A simulation model was developed and applied to dissolved oxygen consumption by organic residues released into this embayment. Three compartments were established as function of: depth, circulation and outfall location. The model compartments had different volumes, and their oxygen saturation value was used as baseline. The parameters: (a) BOD5 of the industrial and urban effluents, (b) oxygen demand by organic sediments, (c) respiration, (d) photosynthesis and (e) re-aeration were included in the model. Iteration results of the model showed severe alterations in Compartment 1, with a decrease of 65% in the oxygen below saturation. Compartment 2 showed a small decline (10%) and compartment 3 did not show apparent changes in oxygen values. Measures recommended for remediation were to decrease the BOD5 loading by 30% in the affected sector. Iteration of the model for 200 h following recommendations derived from the preceding results produced an increase in saturation of 60% (5 ml O2 L−1), which suggested an improvement of the environmental conditions. Springer Science + Business Media, Inc., 2006 bay pollution nationallicence Central Chile nationallicence environmental remediation nationallicence fisheries waste nationallicence organic residues nationallicence water quality nationallicence V : volume of the compartment nationallicence c : oxygen saturation for temperature and salinity (Lm−3) for the compartment (n) nationallicence Q : inflows (e) or arrow/outflows (s) or arrow for the compartment (n) nationallicence S : Oxygen sources and sinks within the compartment nationallicence Uw : wind velocity at 10 m above the water surface (m s−1) nationallicence kL : reaeration constant, ms−1 nationallicence A : surface and bottom areas of compartments (m2) ( n ) = compartment nationallicence k 1 : deoxygenating constant, 1/day nationallicence BOD5 : biochemical oxygen demand nationallicence SB : sediment oxygen demand [ml O2 m−2 s−1] nationallicence Ahumada Ramón Facultad de Ciencias, Universidad Católica de la Santísima Concepción, casilla 297, Concepción, Chile aut Vargas José Departamento de Ingeniería Civil, Universidad de Concepción, Concepción, Chile aut Pagliero Liliana Departamento de Ingeniería Civil, Universidad de Concepción, Concepción, Chile aut Environmental Monitoring and Assessment Kluwer Academic Publishers 118/1-3(2006-07-01), 179-193 0167-6369 118:1-3<179 2006 118 10661 https://doi.org/10.1007/s10661-006-1489-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-1489-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ahumada Ramón Facultad de Ciencias, Universidad Católica de la Santísima Concepción, casilla 297, Concepción, Chile aut NATIONALLICENCE 700 1- Vargas José Departamento de Ingeniería Civil, Universidad de Concepción, Concepción, Chile aut NATIONALLICENCE 700 1- Pagliero Liliana Departamento de Ingeniería Civil, Universidad de Concepción, Concepción, Chile aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Kluwer Academic Publishers 118/1-3(2006-07-01), 179-193 0167-6369 118:1-3<179 2006 118 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer