Implementação de método colorimétrico para determinação de substâncias tensoativas presentes em águas residuárias sintéticas

• Autor(a) principal: Silva, Paula Morais de Oliveira
• Data de Publicação: 2020
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/214066
• topic: Digestão anaeróbia; Microrganismos; Águas residuárias

Wastewater with high organic matter loading contribute to the global pollution problem. A solution for the loading removal is wastewater treatment by anaerobic digestion, in which larger and more complex molecules are transformed into simpler and non-toxic substances by microorganisms in the absence of oxygen. Consider a toxic substance when in abundance, surfactants are widely used in both household and industrial cleaning products and present in wastewater treatment stations where they are partially degraded and partially adsorbed in the sludge that will be disposed in soil or landfills. The need for toxic potential reduction of wastewater is growing each year. Thus, this paper had as main goal to apply a quantifying method for surfactants to evaluate the removal of Linear Alkylbenzene Sulfonate in biological anaerobic sequencing batch reactor. Frequent analysis were made in affluent and effluent of the reactor, such as: pH, alkalinity, volatile acids and Chemical Oxygen Demand (COD) to keep track of the stability and the metabolic activity of the microbiota, as well as LAS removal analysis. The COD removal averaged 87,86±7,90%. The LAS removal averaged 75,26±8,61%.