title: Combined physical-chemical and aerobic biological treatments of wastewater derived from sauce manufacturing.
abstract: The viability of an integrated coagulation-flocculation and aerobic treatment for purifying wastewater derived from a sauce manufacturing industry was evaluated. The best coagulation-flocculation results were obtained at alkaline pH, showing the greatest turbidity removal efficiency (greater than 90%) and a total chemical oxygen demand (COD) removal of approximately 80%, Additionally, experiments at alkaline pH reduce the reagent requirements (coagulant concentration of 0.4 mL/L and flocculant concentration of 4.0 mL/L) providing a consequent economic benefit as compared to experiments at neutral and acidic pH. Another set of experiments was conducted in a sequencing batch reactor to evaluate the aerobic biodegradability of the remnant dissolved organic matter. The effluent from the physical-chemical pre-treatment at alkaline pH again showed the highest biodegradability (76%), with a global COD total removal of 98%. The results showed that the combination of both techniques could be a viable alternative to efficiently treat wastewater derived from sauce manufacturing.
authors.affiliation: Departamento de Química Inorgánica e Ingeniería Química, Facultad de Ciencias, Universidad de Córdoba, Campus Universitario de Rabanales, Ctra. Madrid-Cádiz, km 396, Edificio C-3, planta baja, C.P. 14071, Córdoba, Spain.
authors.forename: M A
authors.initials: MA
authors.lastname: Martín
authors.forename: I
authors.initials: I
authors.lastname: González
authors.forename: J A
authors.initials: JA
authors.lastname: Siles
authors.forename: M
authors.initials: M
authors.lastname: Berrios
authors.forename: A
authors.initials: A
authors.lastname: Martín
mesh_terms: D000332:Aerobiosis; D006863:Hydrogen-Ion Concentration; D014865:Waste Disposal, Fluid / Q000379:methods*; D062065:Wastewater / Q000032:analysis / Q000737:chemistry
chemical_list: D062065:Wastewater