Banca de DEFESA: MIKAELE SILVA KURIKI

SMALL-SCALE WETLAND MODEL FOR SEWAGE TREATMENT: DEFINITION OF A LOW COST STANDARD OPERATIONAL PROCEDURE.

Constructed Wetland . Wastewater treatment. Sanitation.

It is estimated that in Brazil only 51.9% of the population has sewage system care and only 44.9% of the sewage generated in the country goes through some treatment process. In this context, it is necessary implementing alternative technologies in order to mitigate the difficulties that the basic sanitation sector faces. Thus, it is essential to choose an adequate system for the treatment of effluent, especially in regions such as the State of Mato Grosso that still has a large area that needs care. Built Wetlands have proven to be versive and efficient in reducing elements such as Suspended Solids, Chemical Oxygen Demand (DQO), Biochemical Oxygen Demand (DBO), Ammoniacal Nitrogen, Total Phosphorus, Nitrate and Nitrite. The removal of these pollutants takes place through mechanisms of filtration, adsorption, sedimentation, decomposition, microbial metabolism and metabolism of aquatic plants.  The present work aims to verify the efficiency of a Wetland Built bench for the treatment of synthetic sewage. In this sense, it was verified that the synthetic sewage obtained a significant reduction in the parameters of DQO, DBO, Ammoniacal Nitrogen, Total Phosphorus, Nitrate and Nitrite after passing through the WC system. Therefore, the studied alternative systems demonstrated viability for the treatment of synthetic sewage, presenting itself as a promising alternative for the treatment of effluents, in order to collaborate with the greater scope of sewage treatment in the communities.