Caracterización de la toxicidad de los residuales líquidos de una industria de lácteos de la ciudad de Cuenca, utilizando biomodelos ecotoxicológicos

Abstract

The dairy industry generates significant amounts of liquid waste, these waters are mainly composed of organic materials resulting from the processing of raw materials and chemicals that are used in the hygienic and medical treatment. This study aims to assess the concentrations of toxic products in the areas of discharge of liquid waste, including its toxicity on the environment through ecotoxicological bioassays. Different physical and chemical parameters established in the regulations for liquid waste from the dairy industry, the flow of liquid waste sites identified for sample collection and the toxicity of the liquid waste to OECD protocols were determined on Guppy (Poeciliareticulata), Daphnia magna,Lactuca sativa, Zea mays and Phaseolus vulgaris. The results show a varied level of toxicological impact on biomodels used during this work, the most sensitive species Daphnia magna and Poeciliareticulata presenting a toxic effect.