Estudo do uso de biochar no tratamento de esgoto sanitário

Abstract

The proper treatment of sewage is essential to protect public health and the environment. There are numerous diseases that may be transmitted by the lack of proper treatment of sewage, not to mention various environmental issues. Brazil has a precarious public sewage service, with approximately 114,42 millions of inhabitants with deficit in these services. This paper shows the study of sewage treatment through filters filled with green coconut husks and coal fines (wood) biochar. This study aimed to determine the effectiveness of filters made of these materials in the removal of organic matter, nitrogen, phosphor and total, fixed and volatile solids from raw sewage collected in the Sewage Treatment Station Rio Do Campo of Companhia de Saneamento do Paraná – SANEPAR, in Campo Mourão – PR. The behavior of the filtering for the mentioned parameters was compared using parameter curves versus filtering time. The raw sewage was characterized as weak due to high dilution resulted by the rain before the collection day. The effectiveness of removal of the considered parameters, with the use of the filter filled with wood biochar, showed higher results compared to the green coconut biochar. The filter filled with green coconut husks biochar did not show significant efficiency in removal of the analyzed parameters mainly due to its granulometry, which by having a huge amount of thin particles, affected the filtered samples through the drag of the particles along with the filtered. With the application of this paper it was possible to notice that the biochar may become an alternative to supply the lack of sewage treatment without high costs and availability of resources.