Estudo da importância da Demanda Bioquímica de Oxigênio (DBO) para o controle de qualidade do tratamento de efluentes

Abstract

With the growth of urban concentrations, especially in the last century, and consequently with the increase in the volume of waste produced, most of the receiving water bodies became polluted and with low levels of dissolved oxygen. The amount of organic matter present in sewage is indirectly measured through the amount of oxygen needed for its degradation. Thus, the lower the oxygenlevel in the water, the greater its pollution. One of the most used variables to determine this level of oxygen in water is the Biochemical oxygen Demand, BOD. This parameter is also related to the preservation of marine life in the water bodies that receive these effluents. Kepping a level of BOD within the parameter governed by legislation, it maintains the preservation of the environment and all forms of aquatic life. Given the above, this work aimed to study the importance of maintaining an effluent with a low BOD value, that is, a low degree of pollution, through analytical tests with effluents from different sectors.